diff options
Diffstat (limited to 'arch/arm/plat-s3c24xx')
48 files changed, 8573 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c24xx/Kconfig b/arch/arm/plat-s3c24xx/Kconfig new file mode 100644 index 00000000..d9c4096e --- /dev/null +++ b/arch/arm/plat-s3c24xx/Kconfig @@ -0,0 +1,166 @@ +# Copyright 2007 Simtec Electronics +# +# Licensed under GPLv2 + +config PLAT_S3C24XX + bool + depends on ARCH_S3C2410 || ARCH_S3C24A0 + default y + select NO_IOPORT + select ARCH_REQUIRE_GPIOLIB + select S3C_DEV_NAND + select S3C_GPIO_CFG_S3C24XX + help + Base platform code for any Samsung S3C24XX device + +if PLAT_S3C24XX + +# low-level serial option nodes + +config CPU_LLSERIAL_S3C2410_ONLY + bool + default y if CPU_LLSERIAL_S3C2410 && !CPU_LLSERIAL_S3C2440 + +config CPU_LLSERIAL_S3C2440_ONLY + bool + default y if CPU_LLSERIAL_S3C2440 && !CPU_LLSERIAL_S3C2410 + +config CPU_LLSERIAL_S3C2410 + bool + help + Selected if there is an S3C2410 (or register compatible) serial + low-level implementation needed + +config CPU_LLSERIAL_S3C2440 + bool + help + Selected if there is an S3C2440 (or register compatible) serial + low-level implementation needed + +# code that is shared between a number of the s3c24xx implementations + +config S3C2410_CLOCK + bool + help + Clock code for the S3C2410, and similar processors which + is currently includes the S3C2410, S3C2440, S3C2442. + +config S3C2443_CLOCK + bool + help + Clock code for the S3C2443 and similar processors, which includes + the S3C2416 and S3C2450. + +config S3C24XX_DCLK + bool + help + Clock code for supporting DCLK/CLKOUT on S3C24XX architectures + +# gpio configurations + +config S3C24XX_GPIO_EXTRA + int + default 128 if S3C24XX_GPIO_EXTRA128 + default 64 if S3C24XX_GPIO_EXTRA64 + default 16 if ARCH_H1940 + default 0 + +config S3C24XX_GPIO_EXTRA64 + bool + help + Add an extra 64 gpio numbers to the available GPIO pool. This is + available for boards that need extra gpios for external devices. + +config S3C24XX_GPIO_EXTRA128 + bool + help + Add an extra 128 gpio numbers to the available GPIO pool. This is + available for boards that need extra gpios for external devices. + +config PM_SIMTEC + bool + help + Common power management code for systems that are + compatible with the Simtec style of power management + +config S3C2410_DMA + bool "S3C2410 DMA support" + depends on ARCH_S3C2410 + select S3C_DMA + help + S3C2410 DMA support. This is needed for drivers like sound which + use the S3C2410's DMA system to move data to and from the + peripheral blocks. + +config S3C2410_DMA_DEBUG + bool "S3C2410 DMA support debug" + depends on ARCH_S3C2410 && S3C2410_DMA + help + Enable debugging output for the DMA code. This option sends info + to the kernel log, at priority KERN_DEBUG. + +# SPI default pin configuration code + +config S3C24XX_SPI_BUS0_GPE11_GPE12_GPE13 + bool + help + SPI GPIO configuration code for BUS0 when connected to + GPE11, GPE12 and GPE13. + +config S3C24XX_SPI_BUS1_GPG5_GPG6_GPG7 + bool + help + SPI GPIO configuration code for BUS 1 when connected to + GPG5, GPG6 and GPG7. + +config S3C24XX_SPI_BUS1_GPD8_GPD9_GPD10 + bool + help + SPI GPIO configuration code for BUS 1 when connected to + GPD8, GPD9 and GPD10. + +# common code for s3c24xx based machines, such as the SMDKs. + +# cpu frequency items common between s3c2410 and s3c2440/s3c2442 + +config S3C2410_IOTIMING + bool + depends on CPU_FREQ_S3C24XX + help + Internal node to select io timing code that is common to the s3c2410 + and s3c2440/s3c2442 cpu frequency support. + +config S3C2410_CPUFREQ_UTILS + bool + depends on CPU_FREQ_S3C24XX + help + Internal node to select timing code that is common to the s3c2410 + and s3c2440/s3c244 cpu frequency support. + +# cpu frequency support common to s3c2412, s3c2413 and s3c2442 + +config S3C2412_IOTIMING + bool + depends on CPU_FREQ_S3C24XX && (CPU_S3C2412 || CPU_S3C2443) + help + Intel node to select io timing code that is common to the s3c2412 + and the s3c2443. + +config MACH_SMDK + bool + help + Common machine code for SMDK2410 and SMDK2440 + +config S3C24XX_SIMTEC_AUDIO + bool + depends on (ARCH_BAST || MACH_VR1000 || MACH_OSIRIS || MACH_ANUBIS) + default y + help + Add audio devices for common Simtec S3C24XX boards + +config S3C2410_SETUP_TS + bool + help + Compile in platform device definition for Samsung TouchScreen. + +endif diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile new file mode 100644 index 00000000..0291bd6e --- /dev/null +++ b/arch/arm/plat-s3c24xx/Makefile @@ -0,0 +1,52 @@ +# arch/arm/plat-s3c24xx/Makefile +# +# Copyright 2007 Simtec Electronics +# +# Licensed under GPLv2 + +obj-y := +obj-m := +obj-n := +obj- := + + +# Core files + +obj-y += cpu.o +obj-y += irq.o +obj-y += devs.o +obj-y += gpio.o +obj-y += gpiolib.o +obj-y += clock.o +obj-$(CONFIG_S3C24XX_DCLK) += clock-dclk.o + +obj-$(CONFIG_CPU_FREQ_S3C24XX) += cpu-freq.o +obj-$(CONFIG_CPU_FREQ_S3C24XX_DEBUGFS) += cpu-freq-debugfs.o + +# Architecture dependent builds + +obj-$(CONFIG_PM_SIMTEC) += pm-simtec.o +obj-$(CONFIG_PM) += pm.o +obj-$(CONFIG_PM) += irq-pm.o +obj-$(CONFIG_PM) += sleep.o +obj-$(CONFIG_S3C2410_CLOCK) += s3c2410-clock.o +obj-$(CONFIG_S3C2443_CLOCK) += s3c2443-clock.o +obj-$(CONFIG_S3C2410_DMA) += dma.o +obj-$(CONFIG_S3C2410_IOTIMING) += s3c2410-iotiming.o +obj-$(CONFIG_S3C2412_IOTIMING) += s3c2412-iotiming.o +obj-$(CONFIG_S3C2410_CPUFREQ_UTILS) += s3c2410-cpufreq-utils.o + +# device specific setup and/or initialisation +obj-$(CONFIG_ARCH_S3C2410) += setup-i2c.o +obj-$(CONFIG_S3C2410_SETUP_TS) += setup-ts.o + +# SPI gpio central GPIO functions + +obj-$(CONFIG_S3C24XX_SPI_BUS0_GPE11_GPE12_GPE13) += spi-bus0-gpe11_12_13.o +obj-$(CONFIG_S3C24XX_SPI_BUS1_GPG5_GPG6_GPG7) += spi-bus1-gpg5_6_7.o +obj-$(CONFIG_S3C24XX_SPI_BUS1_GPD8_GPD9_GPD10) += spi-bus1-gpd8_9_10.o + +# machine common support + +obj-$(CONFIG_MACH_SMDK) += common-smdk.o +obj-$(CONFIG_S3C24XX_SIMTEC_AUDIO) += simtec-audio.o diff --git a/arch/arm/plat-s3c24xx/clock-dclk.c b/arch/arm/plat-s3c24xx/clock-dclk.c new file mode 100644 index 00000000..cf97caaf --- /dev/null +++ b/arch/arm/plat-s3c24xx/clock-dclk.c @@ -0,0 +1,200 @@ +/* linux/arch/arm/plat-s3c24xx/clock-dclk.c + * + * Copyright (c) 2004-2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * S3C24XX - definitions for DCLK and CLKOUT registers + */ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <mach/regs-clock.h> +#include <mach/regs-gpio.h> + +#include <plat/clock.h> +#include <plat/cpu.h> + +/* clocks that could be registered by external code */ + +static int s3c24xx_dclk_enable(struct clk *clk, int enable) +{ + unsigned long dclkcon = __raw_readl(S3C24XX_DCLKCON); + + if (enable) + dclkcon |= clk->ctrlbit; + else + dclkcon &= ~clk->ctrlbit; + + __raw_writel(dclkcon, S3C24XX_DCLKCON); + + return 0; +} + +static int s3c24xx_dclk_setparent(struct clk *clk, struct clk *parent) +{ + unsigned long dclkcon; + unsigned int uclk; + + if (parent == &clk_upll) + uclk = 1; + else if (parent == &clk_p) + uclk = 0; + else + return -EINVAL; + + clk->parent = parent; + + dclkcon = __raw_readl(S3C24XX_DCLKCON); + + if (clk->ctrlbit == S3C2410_DCLKCON_DCLK0EN) { + if (uclk) + dclkcon |= S3C2410_DCLKCON_DCLK0_UCLK; + else + dclkcon &= ~S3C2410_DCLKCON_DCLK0_UCLK; + } else { + if (uclk) + dclkcon |= S3C2410_DCLKCON_DCLK1_UCLK; + else + dclkcon &= ~S3C2410_DCLKCON_DCLK1_UCLK; + } + + __raw_writel(dclkcon, S3C24XX_DCLKCON); + + return 0; +} +static unsigned long s3c24xx_calc_div(struct clk *clk, unsigned long rate) +{ + unsigned long div; + + if ((rate == 0) || !clk->parent) + return 0; + + div = clk_get_rate(clk->parent) / rate; + if (div < 2) + div = 2; + else if (div > 16) + div = 16; + + return div; +} + +static unsigned long s3c24xx_round_dclk_rate(struct clk *clk, + unsigned long rate) +{ + unsigned long div = s3c24xx_calc_div(clk, rate); + + if (div == 0) + return 0; + + return clk_get_rate(clk->parent) / div; +} + +static int s3c24xx_set_dclk_rate(struct clk *clk, unsigned long rate) +{ + unsigned long mask, data, div = s3c24xx_calc_div(clk, rate); + + if (div == 0) + return -EINVAL; + + if (clk == &s3c24xx_dclk0) { + mask = S3C2410_DCLKCON_DCLK0_DIV_MASK | + S3C2410_DCLKCON_DCLK0_CMP_MASK; + data = S3C2410_DCLKCON_DCLK0_DIV(div) | + S3C2410_DCLKCON_DCLK0_CMP((div + 1) / 2); + } else if (clk == &s3c24xx_dclk1) { + mask = S3C2410_DCLKCON_DCLK1_DIV_MASK | + S3C2410_DCLKCON_DCLK1_CMP_MASK; + data = S3C2410_DCLKCON_DCLK1_DIV(div) | + S3C2410_DCLKCON_DCLK1_CMP((div + 1) / 2); + } else + return -EINVAL; + + clk->rate = clk_get_rate(clk->parent) / div; + __raw_writel(((__raw_readl(S3C24XX_DCLKCON) & ~mask) | data), + S3C24XX_DCLKCON); + return clk->rate; +} +static int s3c24xx_clkout_setparent(struct clk *clk, struct clk *parent) +{ + unsigned long mask; + unsigned long source; + + /* calculate the MISCCR setting for the clock */ + + if (parent == &clk_mpll) + source = S3C2410_MISCCR_CLK0_MPLL; + else if (parent == &clk_upll) + source = S3C2410_MISCCR_CLK0_UPLL; + else if (parent == &clk_f) + source = S3C2410_MISCCR_CLK0_FCLK; + else if (parent == &clk_h) + source = S3C2410_MISCCR_CLK0_HCLK; + else if (parent == &clk_p) + source = S3C2410_MISCCR_CLK0_PCLK; + else if (clk == &s3c24xx_clkout0 && parent == &s3c24xx_dclk0) + source = S3C2410_MISCCR_CLK0_DCLK0; + else if (clk == &s3c24xx_clkout1 && parent == &s3c24xx_dclk1) + source = S3C2410_MISCCR_CLK0_DCLK0; + else + return -EINVAL; + + clk->parent = parent; + + if (clk == &s3c24xx_clkout0) + mask = S3C2410_MISCCR_CLK0_MASK; + else { + source <<= 4; + mask = S3C2410_MISCCR_CLK1_MASK; + } + + s3c2410_modify_misccr(mask, source); + return 0; +} + +/* external clock definitions */ + +static struct clk_ops dclk_ops = { + .set_parent = s3c24xx_dclk_setparent, + .set_rate = s3c24xx_set_dclk_rate, + .round_rate = s3c24xx_round_dclk_rate, +}; + +struct clk s3c24xx_dclk0 = { + .name = "dclk0", + .id = -1, + .ctrlbit = S3C2410_DCLKCON_DCLK0EN, + .enable = s3c24xx_dclk_enable, + .ops = &dclk_ops, +}; + +struct clk s3c24xx_dclk1 = { + .name = "dclk1", + .id = -1, + .ctrlbit = S3C2410_DCLKCON_DCLK1EN, + .enable = s3c24xx_dclk_enable, + .ops = &dclk_ops, +}; + +static struct clk_ops clkout_ops = { + .set_parent = s3c24xx_clkout_setparent, +}; + +struct clk s3c24xx_clkout0 = { + .name = "clkout0", + .id = -1, + .ops = &clkout_ops, +}; + +struct clk s3c24xx_clkout1 = { + .name = "clkout1", + .id = -1, + .ops = &clkout_ops, +}; diff --git a/arch/arm/plat-s3c24xx/clock.c b/arch/arm/plat-s3c24xx/clock.c new file mode 100644 index 00000000..931d26d1 --- /dev/null +++ b/arch/arm/plat-s3c24xx/clock.c @@ -0,0 +1,59 @@ +/* linux/arch/arm/plat-s3c24xx/clock.c + * + * Copyright (c) 2004-2005 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX Core clock control support + * + * Based on, and code from linux/arch/arm/mach-versatile/clock.c + ** + ** Copyright (C) 2004 ARM Limited. + ** Written by Deep Blue Solutions Limited. + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <mach/hardware.h> +#include <asm/irq.h> + +#include <mach/regs-clock.h> +#include <mach/regs-gpio.h> + +#include <plat/cpu-freq.h> + +#include <plat/clock.h> +#include <plat/cpu.h> +#include <plat/pll.h> + +/* initialise all the clocks */ + +void __init_or_cpufreq s3c24xx_setup_clocks(unsigned long fclk, + unsigned long hclk, + unsigned long pclk) +{ + clk_upll.rate = s3c24xx_get_pll(__raw_readl(S3C2410_UPLLCON), + clk_xtal.rate); + + clk_mpll.rate = fclk; + clk_h.rate = hclk; + clk_p.rate = pclk; + clk_f.rate = fclk; +} diff --git a/arch/arm/plat-s3c24xx/common-smdk.c b/arch/arm/plat-s3c24xx/common-smdk.c new file mode 100644 index 00000000..bcc43f34 --- /dev/null +++ b/arch/arm/plat-s3c24xx/common-smdk.c @@ -0,0 +1,207 @@ +/* linux/arch/arm/plat-s3c24xx/common-smdk.c + * + * Copyright (c) 2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Common code for SMDK2410 and SMDK2440 boards + * + * http://www.fluff.org/ben/smdk2440/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/timer.h> +#include <linux/init.h> +#include <linux/gpio.h> +#include <linux/sysdev.h> +#include <linux/platform_device.h> + +#include <linux/mtd/mtd.h> +#include <linux/mtd/nand.h> +#include <linux/mtd/nand_ecc.h> +#include <linux/mtd/partitions.h> +#include <linux/io.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> + +#include <asm/mach-types.h> +#include <mach/hardware.h> +#include <asm/irq.h> + +#include <mach/regs-gpio.h> +#include <mach/leds-gpio.h> + +#include <plat/nand.h> + +#include <plat/common-smdk.h> +#include <plat/gpio-cfg.h> +#include <plat/devs.h> +#include <plat/pm.h> + +/* LED devices */ + +static struct s3c24xx_led_platdata smdk_pdata_led4 = { + .gpio = S3C2410_GPF(4), + .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE, + .name = "led4", + .def_trigger = "timer", +}; + +static struct s3c24xx_led_platdata smdk_pdata_led5 = { + .gpio = S3C2410_GPF(5), + .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE, + .name = "led5", + .def_trigger = "nand-disk", +}; + +static struct s3c24xx_led_platdata smdk_pdata_led6 = { + .gpio = S3C2410_GPF(6), + .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE, + .name = "led6", +}; + +static struct s3c24xx_led_platdata smdk_pdata_led7 = { + .gpio = S3C2410_GPF(7), + .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE, + .name = "led7", +}; + +static struct platform_device smdk_led4 = { + .name = "s3c24xx_led", + .id = 0, + .dev = { + .platform_data = &smdk_pdata_led4, + }, +}; + +static struct platform_device smdk_led5 = { + .name = "s3c24xx_led", + .id = 1, + .dev = { + .platform_data = &smdk_pdata_led5, + }, +}; + +static struct platform_device smdk_led6 = { + .name = "s3c24xx_led", + .id = 2, + .dev = { + .platform_data = &smdk_pdata_led6, + }, +}; + +static struct platform_device smdk_led7 = { + .name = "s3c24xx_led", + .id = 3, + .dev = { + .platform_data = &smdk_pdata_led7, + }, +}; + +/* NAND parititon from 2.4.18-swl5 */ + +static struct mtd_partition smdk_default_nand_part[] = { + [0] = { + .name = "Boot Agent", + .size = SZ_16K, + .offset = 0, + }, + [1] = { + .name = "S3C2410 flash partition 1", + .offset = 0, + .size = SZ_2M, + }, + [2] = { + .name = "S3C2410 flash partition 2", + .offset = SZ_4M, + .size = SZ_4M, + }, + [3] = { + .name = "S3C2410 flash partition 3", + .offset = SZ_8M, + .size = SZ_2M, + }, + [4] = { + .name = "S3C2410 flash partition 4", + .offset = SZ_1M * 10, + .size = SZ_4M, + }, + [5] = { + .name = "S3C2410 flash partition 5", + .offset = SZ_1M * 14, + .size = SZ_1M * 10, + }, + [6] = { + .name = "S3C2410 flash partition 6", + .offset = SZ_1M * 24, + .size = SZ_1M * 24, + }, + [7] = { + .name = "S3C2410 flash partition 7", + .offset = SZ_1M * 48, + .size = MTDPART_SIZ_FULL, + } +}; + +static struct s3c2410_nand_set smdk_nand_sets[] = { + [0] = { + .name = "NAND", + .nr_chips = 1, + .nr_partitions = ARRAY_SIZE(smdk_default_nand_part), + .partitions = smdk_default_nand_part, + }, +}; + +/* choose a set of timings which should suit most 512Mbit + * chips and beyond. +*/ + +static struct s3c2410_platform_nand smdk_nand_info = { + .tacls = 20, + .twrph0 = 60, + .twrph1 = 20, + .nr_sets = ARRAY_SIZE(smdk_nand_sets), + .sets = smdk_nand_sets, +}; + +/* devices we initialise */ + +static struct platform_device __initdata *smdk_devs[] = { + &s3c_device_nand, + &smdk_led4, + &smdk_led5, + &smdk_led6, + &smdk_led7, +}; + +void __init smdk_machine_init(void) +{ + /* Configure the LEDs (even if we have no LED support)*/ + + s3c_gpio_cfgpin(S3C2410_GPF(4), S3C2410_GPIO_OUTPUT); + s3c_gpio_cfgpin(S3C2410_GPF(5), S3C2410_GPIO_OUTPUT); + s3c_gpio_cfgpin(S3C2410_GPF(6), S3C2410_GPIO_OUTPUT); + s3c_gpio_cfgpin(S3C2410_GPF(7), S3C2410_GPIO_OUTPUT); + + s3c2410_gpio_setpin(S3C2410_GPF(4), 1); + s3c2410_gpio_setpin(S3C2410_GPF(5), 1); + s3c2410_gpio_setpin(S3C2410_GPF(6), 1); + s3c2410_gpio_setpin(S3C2410_GPF(7), 1); + + if (machine_is_smdk2443()) + smdk_nand_info.twrph0 = 50; + + s3c_nand_set_platdata(&smdk_nand_info); + + platform_add_devices(smdk_devs, ARRAY_SIZE(smdk_devs)); + + s3c_pm_init(); +} diff --git a/arch/arm/plat-s3c24xx/cpu-freq-debugfs.c b/arch/arm/plat-s3c24xx/cpu-freq-debugfs.c new file mode 100644 index 00000000..a9276667 --- /dev/null +++ b/arch/arm/plat-s3c24xx/cpu-freq-debugfs.c @@ -0,0 +1,199 @@ +/* linux/arch/arm/plat-s3c24xx/cpu-freq-debugfs.c + * + * Copyright (c) 2009 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX CPU Frequency scaling - debugfs status support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/cpufreq.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/err.h> + +#include <plat/cpu-freq-core.h> + +static struct dentry *dbgfs_root; +static struct dentry *dbgfs_file_io; +static struct dentry *dbgfs_file_info; +static struct dentry *dbgfs_file_board; + +#define print_ns(x) ((x) / 10), ((x) % 10) + +static void show_max(struct seq_file *seq, struct s3c_freq *f) +{ + seq_printf(seq, "MAX: F=%lu, H=%lu, P=%lu, A=%lu\n", + f->fclk, f->hclk, f->pclk, f->armclk); +} + +static int board_show(struct seq_file *seq, void *p) +{ + struct s3c_cpufreq_config *cfg; + struct s3c_cpufreq_board *brd; + + cfg = s3c_cpufreq_getconfig(); + if (!cfg) { + seq_printf(seq, "no configuration registered\n"); + return 0; + } + + brd = cfg->board; + if (!brd) { + seq_printf(seq, "no board definition set?\n"); + return 0; + } + + seq_printf(seq, "SDRAM refresh %u ns\n", brd->refresh); + seq_printf(seq, "auto_io=%u\n", brd->auto_io); + seq_printf(seq, "need_io=%u\n", brd->need_io); + + show_max(seq, &brd->max); + + + return 0; +} + +static int fops_board_open(struct inode *inode, struct file *file) +{ + return single_open(file, board_show, NULL); +} + +static const struct file_operations fops_board = { + .open = fops_board_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .owner = THIS_MODULE, +}; + +static int info_show(struct seq_file *seq, void *p) +{ + struct s3c_cpufreq_config *cfg; + + cfg = s3c_cpufreq_getconfig(); + if (!cfg) { + seq_printf(seq, "no configuration registered\n"); + return 0; + } + + seq_printf(seq, " FCLK %ld Hz\n", cfg->freq.fclk); + seq_printf(seq, " HCLK %ld Hz (%lu.%lu ns)\n", + cfg->freq.hclk, print_ns(cfg->freq.hclk_tns)); + seq_printf(seq, " PCLK %ld Hz\n", cfg->freq.hclk); + seq_printf(seq, "ARMCLK %ld Hz\n", cfg->freq.armclk); + seq_printf(seq, "\n"); + + show_max(seq, &cfg->max); + + seq_printf(seq, "Divisors: P=%d, H=%d, A=%d, dvs=%s\n", + cfg->divs.h_divisor, cfg->divs.p_divisor, + cfg->divs.arm_divisor, cfg->divs.dvs ? "on" : "off"); + seq_printf(seq, "\n"); + + seq_printf(seq, "lock_pll=%u\n", cfg->lock_pll); + + return 0; +} + +static int fops_info_open(struct inode *inode, struct file *file) +{ + return single_open(file, info_show, NULL); +} + +static const struct file_operations fops_info = { + .open = fops_info_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .owner = THIS_MODULE, +}; + +static int io_show(struct seq_file *seq, void *p) +{ + void (*show_bank)(struct seq_file *, struct s3c_cpufreq_config *, union s3c_iobank *); + struct s3c_cpufreq_config *cfg; + struct s3c_iotimings *iot; + union s3c_iobank *iob; + int bank; + + cfg = s3c_cpufreq_getconfig(); + if (!cfg) { + seq_printf(seq, "no configuration registered\n"); + return 0; + } + + show_bank = cfg->info->debug_io_show; + if (!show_bank) { + seq_printf(seq, "no code to show bank timing\n"); + return 0; + } + + iot = s3c_cpufreq_getiotimings(); + if (!iot) { + seq_printf(seq, "no io timings registered\n"); + return 0; + } + + seq_printf(seq, "hclk period is %lu.%lu ns\n", print_ns(cfg->freq.hclk_tns)); + + for (bank = 0; bank < MAX_BANKS; bank++) { + iob = &iot->bank[bank]; + + seq_printf(seq, "bank %d: ", bank); + + if (!iob->io_2410) { + seq_printf(seq, "nothing set\n"); + continue; + } + + show_bank(seq, cfg, iob); + } + + return 0; +} + +static int fops_io_open(struct inode *inode, struct file *file) +{ + return single_open(file, io_show, NULL); +} + +static const struct file_operations fops_io = { + .open = fops_io_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .owner = THIS_MODULE, +}; + + +static int __init s3c_freq_debugfs_init(void) +{ + dbgfs_root = debugfs_create_dir("s3c-cpufreq", NULL); + if (IS_ERR(dbgfs_root)) { + printk(KERN_ERR "%s: error creating debugfs root\n", __func__); + return PTR_ERR(dbgfs_root); + } + + dbgfs_file_io = debugfs_create_file("io-timing", S_IRUGO, dbgfs_root, + NULL, &fops_io); + + dbgfs_file_info = debugfs_create_file("info", S_IRUGO, dbgfs_root, + NULL, &fops_info); + + dbgfs_file_board = debugfs_create_file("board", S_IRUGO, dbgfs_root, + NULL, &fops_board); + + return 0; +} + +late_initcall(s3c_freq_debugfs_init); + diff --git a/arch/arm/plat-s3c24xx/cpu-freq.c b/arch/arm/plat-s3c24xx/cpu-freq.c new file mode 100644 index 00000000..b3d3d027 --- /dev/null +++ b/arch/arm/plat-s3c24xx/cpu-freq.c @@ -0,0 +1,716 @@ +/* linux/arch/arm/plat-s3c24xx/cpu-freq.c + * + * Copyright (c) 2006-2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX CPU Frequency scaling + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/cpufreq.h> +#include <linux/cpu.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/sysdev.h> +#include <linux/sysfs.h> +#include <linux/slab.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> + +#include <plat/cpu.h> +#include <plat/clock.h> +#include <plat/cpu-freq-core.h> + +#include <mach/regs-clock.h> + +/* note, cpufreq support deals in kHz, no Hz */ + +static struct cpufreq_driver s3c24xx_driver; +static struct s3c_cpufreq_config cpu_cur; +static struct s3c_iotimings s3c24xx_iotiming; +static struct cpufreq_frequency_table *pll_reg; +static unsigned int last_target = ~0; +static unsigned int ftab_size; +static struct cpufreq_frequency_table *ftab; + +static struct clk *_clk_mpll; +static struct clk *_clk_xtal; +static struct clk *clk_fclk; +static struct clk *clk_hclk; +static struct clk *clk_pclk; +static struct clk *clk_arm; + +#ifdef CONFIG_CPU_FREQ_S3C24XX_DEBUGFS +struct s3c_cpufreq_config *s3c_cpufreq_getconfig(void) +{ + return &cpu_cur; +} + +struct s3c_iotimings *s3c_cpufreq_getiotimings(void) +{ + return &s3c24xx_iotiming; +} +#endif /* CONFIG_CPU_FREQ_S3C24XX_DEBUGFS */ + +static void s3c_cpufreq_getcur(struct s3c_cpufreq_config *cfg) +{ + unsigned long fclk, pclk, hclk, armclk; + + cfg->freq.fclk = fclk = clk_get_rate(clk_fclk); + cfg->freq.hclk = hclk = clk_get_rate(clk_hclk); + cfg->freq.pclk = pclk = clk_get_rate(clk_pclk); + cfg->freq.armclk = armclk = clk_get_rate(clk_arm); + + cfg->pll.index = __raw_readl(S3C2410_MPLLCON); + cfg->pll.frequency = fclk; + + cfg->freq.hclk_tns = 1000000000 / (cfg->freq.hclk / 10); + + cfg->divs.h_divisor = fclk / hclk; + cfg->divs.p_divisor = fclk / pclk; +} + +static inline void s3c_cpufreq_calc(struct s3c_cpufreq_config *cfg) +{ + unsigned long pll = cfg->pll.frequency; + + cfg->freq.fclk = pll; + cfg->freq.hclk = pll / cfg->divs.h_divisor; + cfg->freq.pclk = pll / cfg->divs.p_divisor; + + /* convert hclk into 10ths of nanoseconds for io calcs */ + cfg->freq.hclk_tns = 1000000000 / (cfg->freq.hclk / 10); +} + +static inline int closer(unsigned int target, unsigned int n, unsigned int c) +{ + int diff_cur = abs(target - c); + int diff_new = abs(target - n); + + return (diff_new < diff_cur); +} + +static void s3c_cpufreq_show(const char *pfx, + struct s3c_cpufreq_config *cfg) +{ + s3c_freq_dbg("%s: Fvco=%u, F=%lu, A=%lu, H=%lu (%u), P=%lu (%u)\n", + pfx, cfg->pll.frequency, cfg->freq.fclk, cfg->freq.armclk, + cfg->freq.hclk, cfg->divs.h_divisor, + cfg->freq.pclk, cfg->divs.p_divisor); +} + +/* functions to wrapper the driver info calls to do the cpu specific work */ + +static void s3c_cpufreq_setio(struct s3c_cpufreq_config *cfg) +{ + if (cfg->info->set_iotiming) + (cfg->info->set_iotiming)(cfg, &s3c24xx_iotiming); +} + +static int s3c_cpufreq_calcio(struct s3c_cpufreq_config *cfg) +{ + if (cfg->info->calc_iotiming) + return (cfg->info->calc_iotiming)(cfg, &s3c24xx_iotiming); + + return 0; +} + +static void s3c_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg) +{ + (cfg->info->set_refresh)(cfg); +} + +static void s3c_cpufreq_setdivs(struct s3c_cpufreq_config *cfg) +{ + (cfg->info->set_divs)(cfg); +} + +static int s3c_cpufreq_calcdivs(struct s3c_cpufreq_config *cfg) +{ + return (cfg->info->calc_divs)(cfg); +} + +static void s3c_cpufreq_setfvco(struct s3c_cpufreq_config *cfg) +{ + (cfg->info->set_fvco)(cfg); +} + +static inline void s3c_cpufreq_resume_clocks(void) +{ + cpu_cur.info->resume_clocks(); +} + +static inline void s3c_cpufreq_updateclk(struct clk *clk, + unsigned int freq) +{ + clk_set_rate(clk, freq); +} + +static int s3c_cpufreq_settarget(struct cpufreq_policy *policy, + unsigned int target_freq, + struct cpufreq_frequency_table *pll) +{ + struct s3c_cpufreq_freqs freqs; + struct s3c_cpufreq_config cpu_new; + unsigned long flags; + + cpu_new = cpu_cur; /* copy new from current */ + + s3c_cpufreq_show("cur", &cpu_cur); + + /* TODO - check for DMA currently outstanding */ + + cpu_new.pll = pll ? *pll : cpu_cur.pll; + + if (pll) + freqs.pll_changing = 1; + + /* update our frequencies */ + + cpu_new.freq.armclk = target_freq; + cpu_new.freq.fclk = cpu_new.pll.frequency; + + if (s3c_cpufreq_calcdivs(&cpu_new) < 0) { + printk(KERN_ERR "no divisors for %d\n", target_freq); + goto err_notpossible; + } + + s3c_freq_dbg("%s: got divs\n", __func__); + + s3c_cpufreq_calc(&cpu_new); + + s3c_freq_dbg("%s: calculated frequencies for new\n", __func__); + + if (cpu_new.freq.hclk != cpu_cur.freq.hclk) { + if (s3c_cpufreq_calcio(&cpu_new) < 0) { + printk(KERN_ERR "%s: no IO timings\n", __func__); + goto err_notpossible; + } + } + + s3c_cpufreq_show("new", &cpu_new); + + /* setup our cpufreq parameters */ + + freqs.old = cpu_cur.freq; + freqs.new = cpu_new.freq; + + freqs.freqs.cpu = 0; + freqs.freqs.old = cpu_cur.freq.armclk / 1000; + freqs.freqs.new = cpu_new.freq.armclk / 1000; + + /* update f/h/p clock settings before we issue the change + * notification, so that drivers do not need to do anything + * special if they want to recalculate on CPUFREQ_PRECHANGE. */ + + s3c_cpufreq_updateclk(_clk_mpll, cpu_new.pll.frequency); + s3c_cpufreq_updateclk(clk_fclk, cpu_new.freq.fclk); + s3c_cpufreq_updateclk(clk_hclk, cpu_new.freq.hclk); + s3c_cpufreq_updateclk(clk_pclk, cpu_new.freq.pclk); + + /* start the frequency change */ + + if (policy) + cpufreq_notify_transition(&freqs.freqs, CPUFREQ_PRECHANGE); + + /* If hclk is staying the same, then we do not need to + * re-write the IO or the refresh timings whilst we are changing + * speed. */ + + local_irq_save(flags); + + /* is our memory clock slowing down? */ + if (cpu_new.freq.hclk < cpu_cur.freq.hclk) { + s3c_cpufreq_setrefresh(&cpu_new); + s3c_cpufreq_setio(&cpu_new); + } + + if (cpu_new.freq.fclk == cpu_cur.freq.fclk) { + /* not changing PLL, just set the divisors */ + + s3c_cpufreq_setdivs(&cpu_new); + } else { + if (cpu_new.freq.fclk < cpu_cur.freq.fclk) { + /* slow the cpu down, then set divisors */ + + s3c_cpufreq_setfvco(&cpu_new); + s3c_cpufreq_setdivs(&cpu_new); + } else { + /* set the divisors, then speed up */ + + s3c_cpufreq_setdivs(&cpu_new); + s3c_cpufreq_setfvco(&cpu_new); + } + } + + /* did our memory clock speed up */ + if (cpu_new.freq.hclk > cpu_cur.freq.hclk) { + s3c_cpufreq_setrefresh(&cpu_new); + s3c_cpufreq_setio(&cpu_new); + } + + /* update our current settings */ + cpu_cur = cpu_new; + + local_irq_restore(flags); + + /* notify everyone we've done this */ + if (policy) + cpufreq_notify_transition(&freqs.freqs, CPUFREQ_POSTCHANGE); + + s3c_freq_dbg("%s: finished\n", __func__); + return 0; + + err_notpossible: + printk(KERN_ERR "no compatible settings for %d\n", target_freq); + return -EINVAL; +} + +/* s3c_cpufreq_target + * + * called by the cpufreq core to adjust the frequency that the CPU + * is currently running at. + */ + +static int s3c_cpufreq_target(struct cpufreq_policy *policy, + unsigned int target_freq, + unsigned int relation) +{ + struct cpufreq_frequency_table *pll; + unsigned int index; + + /* avoid repeated calls which cause a needless amout of duplicated + * logging output (and CPU time as the calculation process is + * done) */ + if (target_freq == last_target) + return 0; + + last_target = target_freq; + + s3c_freq_dbg("%s: policy %p, target %u, relation %u\n", + __func__, policy, target_freq, relation); + + if (ftab) { + if (cpufreq_frequency_table_target(policy, ftab, + target_freq, relation, + &index)) { + s3c_freq_dbg("%s: table failed\n", __func__); + return -EINVAL; + } + + s3c_freq_dbg("%s: adjust %d to entry %d (%u)\n", __func__, + target_freq, index, ftab[index].frequency); + target_freq = ftab[index].frequency; + } + + target_freq *= 1000; /* convert target to Hz */ + + /* find the settings for our new frequency */ + + if (!pll_reg || cpu_cur.lock_pll) { + /* either we've not got any PLL values, or we've locked + * to the current one. */ + pll = NULL; + } else { + struct cpufreq_policy tmp_policy; + int ret; + + /* we keep the cpu pll table in Hz, to ensure we get an + * accurate value for the PLL output. */ + + tmp_policy.min = policy->min * 1000; + tmp_policy.max = policy->max * 1000; + tmp_policy.cpu = policy->cpu; + + /* cpufreq_frequency_table_target uses a pointer to 'index' + * which is the number of the table entry, not the value of + * the table entry's index field. */ + + ret = cpufreq_frequency_table_target(&tmp_policy, pll_reg, + target_freq, relation, + &index); + + if (ret < 0) { + printk(KERN_ERR "%s: no PLL available\n", __func__); + goto err_notpossible; + } + + pll = pll_reg + index; + + s3c_freq_dbg("%s: target %u => %u\n", + __func__, target_freq, pll->frequency); + + target_freq = pll->frequency; + } + + return s3c_cpufreq_settarget(policy, target_freq, pll); + + err_notpossible: + printk(KERN_ERR "no compatible settings for %d\n", target_freq); + return -EINVAL; +} + +static unsigned int s3c_cpufreq_get(unsigned int cpu) +{ + return clk_get_rate(clk_arm) / 1000; +} + +struct clk *s3c_cpufreq_clk_get(struct device *dev, const char *name) +{ + struct clk *clk; + + clk = clk_get(dev, name); + if (IS_ERR(clk)) + printk(KERN_ERR "cpufreq: failed to get clock '%s'\n", name); + + return clk; +} + +static int s3c_cpufreq_init(struct cpufreq_policy *policy) +{ + printk(KERN_INFO "%s: initialising policy %p\n", __func__, policy); + + if (policy->cpu != 0) + return -EINVAL; + + policy->cur = s3c_cpufreq_get(0); + policy->min = policy->cpuinfo.min_freq = 0; + policy->max = policy->cpuinfo.max_freq = cpu_cur.info->max.fclk / 1000; + policy->governor = CPUFREQ_DEFAULT_GOVERNOR; + + /* feed the latency information from the cpu driver */ + policy->cpuinfo.transition_latency = cpu_cur.info->latency; + + if (ftab) + cpufreq_frequency_table_cpuinfo(policy, ftab); + + return 0; +} + +static __init int s3c_cpufreq_initclks(void) +{ + _clk_mpll = s3c_cpufreq_clk_get(NULL, "mpll"); + _clk_xtal = s3c_cpufreq_clk_get(NULL, "xtal"); + clk_fclk = s3c_cpufreq_clk_get(NULL, "fclk"); + clk_hclk = s3c_cpufreq_clk_get(NULL, "hclk"); + clk_pclk = s3c_cpufreq_clk_get(NULL, "pclk"); + clk_arm = s3c_cpufreq_clk_get(NULL, "armclk"); + + if (IS_ERR(clk_fclk) || IS_ERR(clk_hclk) || IS_ERR(clk_pclk) || + IS_ERR(_clk_mpll) || IS_ERR(clk_arm) || IS_ERR(_clk_xtal)) { + printk(KERN_ERR "%s: could not get clock(s)\n", __func__); + return -ENOENT; + } + + printk(KERN_INFO "%s: clocks f=%lu,h=%lu,p=%lu,a=%lu\n", __func__, + clk_get_rate(clk_fclk) / 1000, + clk_get_rate(clk_hclk) / 1000, + clk_get_rate(clk_pclk) / 1000, + clk_get_rate(clk_arm) / 1000); + + return 0; +} + +static int s3c_cpufreq_verify(struct cpufreq_policy *policy) +{ + if (policy->cpu != 0) + return -EINVAL; + + return 0; +} + +#ifdef CONFIG_PM +static struct cpufreq_frequency_table suspend_pll; +static unsigned int suspend_freq; + +static int s3c_cpufreq_suspend(struct cpufreq_policy *policy) +{ + suspend_pll.frequency = clk_get_rate(_clk_mpll); + suspend_pll.index = __raw_readl(S3C2410_MPLLCON); + suspend_freq = s3c_cpufreq_get(0) * 1000; + + return 0; +} + +static int s3c_cpufreq_resume(struct cpufreq_policy *policy) +{ + int ret; + + s3c_freq_dbg("%s: resuming with policy %p\n", __func__, policy); + + last_target = ~0; /* invalidate last_target setting */ + + /* first, find out what speed we resumed at. */ + s3c_cpufreq_resume_clocks(); + + /* whilst we will be called later on, we try and re-set the + * cpu frequencies as soon as possible so that we do not end + * up resuming devices and then immediately having to re-set + * a number of settings once these devices have restarted. + * + * as a note, it is expected devices are not used until they + * have been un-suspended and at that time they should have + * used the updated clock settings. + */ + + ret = s3c_cpufreq_settarget(NULL, suspend_freq, &suspend_pll); + if (ret) { + printk(KERN_ERR "%s: failed to reset pll/freq\n", __func__); + return ret; + } + + return 0; +} +#else +#define s3c_cpufreq_resume NULL +#define s3c_cpufreq_suspend NULL +#endif + +static struct cpufreq_driver s3c24xx_driver = { + .flags = CPUFREQ_STICKY, + .verify = s3c_cpufreq_verify, + .target = s3c_cpufreq_target, + .get = s3c_cpufreq_get, + .init = s3c_cpufreq_init, + .suspend = s3c_cpufreq_suspend, + .resume = s3c_cpufreq_resume, + .name = "s3c24xx", +}; + + +int __init s3c_cpufreq_register(struct s3c_cpufreq_info *info) +{ + if (!info || !info->name) { + printk(KERN_ERR "%s: failed to pass valid information\n", + __func__); + return -EINVAL; + } + + printk(KERN_INFO "S3C24XX CPU Frequency driver, %s cpu support\n", + info->name); + + /* check our driver info has valid data */ + + BUG_ON(info->set_refresh == NULL); + BUG_ON(info->set_divs == NULL); + BUG_ON(info->calc_divs == NULL); + + /* info->set_fvco is optional, depending on whether there + * is a need to set the clock code. */ + + cpu_cur.info = info; + + /* Note, driver registering should probably update locktime */ + + return 0; +} + +int __init s3c_cpufreq_setboard(struct s3c_cpufreq_board *board) +{ + struct s3c_cpufreq_board *ours; + + if (!board) { + printk(KERN_INFO "%s: no board data\n", __func__); + return -EINVAL; + } + + /* Copy the board information so that each board can make this + * initdata. */ + + ours = kzalloc(sizeof(struct s3c_cpufreq_board), GFP_KERNEL); + if (ours == NULL) { + printk(KERN_ERR "%s: no memory\n", __func__); + return -ENOMEM; + } + + *ours = *board; + cpu_cur.board = ours; + + return 0; +} + +int __init s3c_cpufreq_auto_io(void) +{ + int ret; + + if (!cpu_cur.info->get_iotiming) { + printk(KERN_ERR "%s: get_iotiming undefined\n", __func__); + return -ENOENT; + } + + printk(KERN_INFO "%s: working out IO settings\n", __func__); + + ret = (cpu_cur.info->get_iotiming)(&cpu_cur, &s3c24xx_iotiming); + if (ret) + printk(KERN_ERR "%s: failed to get timings\n", __func__); + + return ret; +} + +/* if one or is zero, then return the other, otherwise return the min */ +#define do_min(_a, _b) ((_a) == 0 ? (_b) : (_b) == 0 ? (_a) : min(_a, _b)) + +/** + * s3c_cpufreq_freq_min - find the minimum settings for the given freq. + * @dst: The destination structure + * @a: One argument. + * @b: The other argument. + * + * Create a minimum of each frequency entry in the 'struct s3c_freq', + * unless the entry is zero when it is ignored and the non-zero argument + * used. + */ +static void s3c_cpufreq_freq_min(struct s3c_freq *dst, + struct s3c_freq *a, struct s3c_freq *b) +{ + dst->fclk = do_min(a->fclk, b->fclk); + dst->hclk = do_min(a->hclk, b->hclk); + dst->pclk = do_min(a->pclk, b->pclk); + dst->armclk = do_min(a->armclk, b->armclk); +} + +static inline u32 calc_locktime(u32 freq, u32 time_us) +{ + u32 result; + + result = freq * time_us; + result = DIV_ROUND_UP(result, 1000 * 1000); + + return result; +} + +static void s3c_cpufreq_update_loctkime(void) +{ + unsigned int bits = cpu_cur.info->locktime_bits; + u32 rate = (u32)clk_get_rate(_clk_xtal); + u32 val; + + if (bits == 0) { + WARN_ON(1); + return; + } + + val = calc_locktime(rate, cpu_cur.info->locktime_u) << bits; + val |= calc_locktime(rate, cpu_cur.info->locktime_m); + + printk(KERN_INFO "%s: new locktime is 0x%08x\n", __func__, val); + __raw_writel(val, S3C2410_LOCKTIME); +} + +static int s3c_cpufreq_build_freq(void) +{ + int size, ret; + + if (!cpu_cur.info->calc_freqtable) + return -EINVAL; + + kfree(ftab); + ftab = NULL; + + size = cpu_cur.info->calc_freqtable(&cpu_cur, NULL, 0); + size++; + + ftab = kmalloc(sizeof(struct cpufreq_frequency_table) * size, GFP_KERNEL); + if (!ftab) { + printk(KERN_ERR "%s: no memory for tables\n", __func__); + return -ENOMEM; + } + + ftab_size = size; + + ret = cpu_cur.info->calc_freqtable(&cpu_cur, ftab, size); + s3c_cpufreq_addfreq(ftab, ret, size, CPUFREQ_TABLE_END); + + return 0; +} + +static int __init s3c_cpufreq_initcall(void) +{ + int ret = 0; + + if (cpu_cur.info && cpu_cur.board) { + ret = s3c_cpufreq_initclks(); + if (ret) + goto out; + + /* get current settings */ + s3c_cpufreq_getcur(&cpu_cur); + s3c_cpufreq_show("cur", &cpu_cur); + + if (cpu_cur.board->auto_io) { + ret = s3c_cpufreq_auto_io(); + if (ret) { + printk(KERN_ERR "%s: failed to get io timing\n", + __func__); + goto out; + } + } + + if (cpu_cur.board->need_io && !cpu_cur.info->set_iotiming) { + printk(KERN_ERR "%s: no IO support registered\n", + __func__); + ret = -EINVAL; + goto out; + } + + if (!cpu_cur.info->need_pll) + cpu_cur.lock_pll = 1; + + s3c_cpufreq_update_loctkime(); + + s3c_cpufreq_freq_min(&cpu_cur.max, &cpu_cur.board->max, + &cpu_cur.info->max); + + if (cpu_cur.info->calc_freqtable) + s3c_cpufreq_build_freq(); + + ret = cpufreq_register_driver(&s3c24xx_driver); + } + + out: + return ret; +} + +late_initcall(s3c_cpufreq_initcall); + +/** + * s3c_plltab_register - register CPU PLL table. + * @plls: The list of PLL entries. + * @plls_no: The size of the PLL entries @plls. + * + * Register the given set of PLLs with the system. + */ +int __init s3c_plltab_register(struct cpufreq_frequency_table *plls, + unsigned int plls_no) +{ + struct cpufreq_frequency_table *vals; + unsigned int size; + + size = sizeof(struct cpufreq_frequency_table) * (plls_no + 1); + + vals = kmalloc(size, GFP_KERNEL); + if (vals) { + memcpy(vals, plls, size); + pll_reg = vals; + + /* write a terminating entry, we don't store it in the + * table that is stored in the kernel */ + vals += plls_no; + vals->frequency = CPUFREQ_TABLE_END; + + printk(KERN_INFO "cpufreq: %d PLL entries\n", plls_no); + } else + printk(KERN_ERR "cpufreq: no memory for PLL tables\n"); + + return vals ? 0 : -ENOMEM; +} diff --git a/arch/arm/plat-s3c24xx/cpu.c b/arch/arm/plat-s3c24xx/cpu.c new file mode 100644 index 00000000..4a10c0f6 --- /dev/null +++ b/arch/arm/plat-s3c24xx/cpu.c @@ -0,0 +1,248 @@ +/* linux/arch/arm/plat-s3c24xx/cpu.c + * + * Copyright (c) 2004-2005 Simtec Electronics + * http://www.simtec.co.uk/products/SWLINUX/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX CPU Support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/serial_core.h> +#include <linux/platform_device.h> +#include <linux/delay.h> +#include <linux/io.h> + +#include <mach/hardware.h> +#include <asm/irq.h> +#include <asm/cacheflush.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> + +#include <mach/system-reset.h> + +#include <mach/regs-gpio.h> +#include <plat/regs-serial.h> + +#include <plat/cpu.h> +#include <plat/devs.h> +#include <plat/clock.h> +#include <plat/s3c2400.h> +#include <plat/s3c2410.h> +#include <plat/s3c2412.h> +#include <plat/s3c2416.h> +#include <plat/s3c244x.h> +#include <plat/s3c2443.h> + +/* table of supported CPUs */ + +static const char name_s3c2400[] = "S3C2400"; +static const char name_s3c2410[] = "S3C2410"; +static const char name_s3c2412[] = "S3C2412"; +static const char name_s3c2416[] = "S3C2416/S3C2450"; +static const char name_s3c2440[] = "S3C2440"; +static const char name_s3c2442[] = "S3C2442"; +static const char name_s3c2442b[] = "S3C2442B"; +static const char name_s3c2443[] = "S3C2443"; +static const char name_s3c2410a[] = "S3C2410A"; +static const char name_s3c2440a[] = "S3C2440A"; + +static struct cpu_table cpu_ids[] __initdata = { + { + .idcode = 0x32410000, + .idmask = 0xffffffff, + .map_io = s3c2410_map_io, + .init_clocks = s3c2410_init_clocks, + .init_uarts = s3c2410_init_uarts, + .init = s3c2410_init, + .name = name_s3c2410 + }, + { + .idcode = 0x32410002, + .idmask = 0xffffffff, + .map_io = s3c2410_map_io, + .init_clocks = s3c2410_init_clocks, + .init_uarts = s3c2410_init_uarts, + .init = s3c2410a_init, + .name = name_s3c2410a + }, + { + .idcode = 0x32440000, + .idmask = 0xffffffff, + .map_io = s3c2440_map_io, + .init_clocks = s3c244x_init_clocks, + .init_uarts = s3c244x_init_uarts, + .init = s3c2440_init, + .name = name_s3c2440 + }, + { + .idcode = 0x32440001, + .idmask = 0xffffffff, + .map_io = s3c2440_map_io, + .init_clocks = s3c244x_init_clocks, + .init_uarts = s3c244x_init_uarts, + .init = s3c2440_init, + .name = name_s3c2440a + }, + { + .idcode = 0x32440aaa, + .idmask = 0xffffffff, + .map_io = s3c2442_map_io, + .init_clocks = s3c244x_init_clocks, + .init_uarts = s3c244x_init_uarts, + .init = s3c2442_init, + .name = name_s3c2442 + }, + { + .idcode = 0x32440aab, + .idmask = 0xffffffff, + .map_io = s3c2442_map_io, + .init_clocks = s3c244x_init_clocks, + .init_uarts = s3c244x_init_uarts, + .init = s3c2442_init, + .name = name_s3c2442b + }, + { + .idcode = 0x32412001, + .idmask = 0xffffffff, + .map_io = s3c2412_map_io, + .init_clocks = s3c2412_init_clocks, + .init_uarts = s3c2412_init_uarts, + .init = s3c2412_init, + .name = name_s3c2412, + }, + { /* a newer version of the s3c2412 */ + .idcode = 0x32412003, + .idmask = 0xffffffff, + .map_io = s3c2412_map_io, + .init_clocks = s3c2412_init_clocks, + .init_uarts = s3c2412_init_uarts, + .init = s3c2412_init, + .name = name_s3c2412, + }, + { /* a strange version of the s3c2416 */ + .idcode = 0x32450003, + .idmask = 0xffffffff, + .map_io = s3c2416_map_io, + .init_clocks = s3c2416_init_clocks, + .init_uarts = s3c2416_init_uarts, + .init = s3c2416_init, + .name = name_s3c2416, + }, + { + .idcode = 0x32443001, + .idmask = 0xffffffff, + .map_io = s3c2443_map_io, + .init_clocks = s3c2443_init_clocks, + .init_uarts = s3c2443_init_uarts, + .init = s3c2443_init, + .name = name_s3c2443, + }, + { + .idcode = 0x0, /* S3C2400 doesn't have an idcode */ + .idmask = 0xffffffff, + .map_io = s3c2400_map_io, + .init_clocks = s3c2400_init_clocks, + .init_uarts = s3c2400_init_uarts, + .init = s3c2400_init, + .name = name_s3c2400 + }, +}; + +/* minimal IO mapping */ + +static struct map_desc s3c_iodesc[] __initdata = { + IODESC_ENT(GPIO), + IODESC_ENT(IRQ), + IODESC_ENT(MEMCTRL), + IODESC_ENT(UART) +}; + +/* read cpu identificaiton code */ + +static unsigned long s3c24xx_read_idcode_v5(void) +{ +#if defined(CONFIG_CPU_S3C2416) + /* s3c2416 is v5, with S3C24XX_GSTATUS1 instead of S3C2412_GSTATUS1 */ + + u32 gs = __raw_readl(S3C24XX_GSTATUS1); + + /* test for s3c2416 or similar device */ + if ((gs >> 16) == 0x3245) + return gs; +#endif + +#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413) + return __raw_readl(S3C2412_GSTATUS1); +#else + return 1UL; /* don't look like an 2400 */ +#endif +} + +static unsigned long s3c24xx_read_idcode_v4(void) +{ +#ifndef CONFIG_CPU_S3C2400 + return __raw_readl(S3C2410_GSTATUS1); +#else + return 0UL; +#endif +} + +/* Hook for arm_pm_restart to ensure we execute the reset code + * with the caches enabled. It seems at least the S3C2440 has a problem + * resetting if there is bus activity interrupted by the reset. + */ +static void s3c24xx_pm_restart(char mode, const char *cmd) +{ + if (mode != 's') { + unsigned long flags; + + local_irq_save(flags); + __cpuc_flush_kern_all(); + __cpuc_flush_user_all(); + + arch_reset(mode, cmd); + local_irq_restore(flags); + } + + /* fallback, or unhandled */ + arm_machine_restart(mode, cmd); +} + +void __init s3c24xx_init_io(struct map_desc *mach_desc, int size) +{ + unsigned long idcode = 0x0; + + /* initialise the io descriptors we need for initialisation */ + iotable_init(mach_desc, size); + iotable_init(s3c_iodesc, ARRAY_SIZE(s3c_iodesc)); + + if (cpu_architecture() >= CPU_ARCH_ARMv5) { + idcode = s3c24xx_read_idcode_v5(); + } else { + idcode = s3c24xx_read_idcode_v4(); + } + + arm_pm_restart = s3c24xx_pm_restart; + + s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids)); +} diff --git a/arch/arm/plat-s3c24xx/devs.c b/arch/arm/plat-s3c24xx/devs.c new file mode 100644 index 00000000..73667994 --- /dev/null +++ b/arch/arm/plat-s3c24xx/devs.c @@ -0,0 +1,552 @@ +/* linux/arch/arm/plat-s3c24xx/devs.c + * + * Copyright (c) 2004 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Base S3C24XX platform device definitions + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * +*/ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/timer.h> +#include <linux/init.h> +#include <linux/serial_core.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/dma-mapping.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> +#include <asm/mach/irq.h> +#include <mach/fb.h> +#include <mach/hardware.h> +#include <mach/dma.h> +#include <mach/irqs.h> +#include <asm/irq.h> + +#include <plat/regs-serial.h> +#include <plat/udc.h> +#include <plat/mci.h> + +#include <plat/devs.h> +#include <plat/cpu.h> +#include <plat/regs-spi.h> +#include <plat/ts.h> + +/* Serial port registrations */ + +static struct resource s3c2410_uart0_resource[] = { + [0] = { + .start = S3C2410_PA_UART0, + .end = S3C2410_PA_UART0 + 0x3fff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_S3CUART_RX0, + .end = IRQ_S3CUART_ERR0, + .flags = IORESOURCE_IRQ, + } +}; + +static struct resource s3c2410_uart1_resource[] = { + [0] = { + .start = S3C2410_PA_UART1, + .end = S3C2410_PA_UART1 + 0x3fff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_S3CUART_RX1, + .end = IRQ_S3CUART_ERR1, + .flags = IORESOURCE_IRQ, + } +}; + +static struct resource s3c2410_uart2_resource[] = { + [0] = { + .start = S3C2410_PA_UART2, + .end = S3C2410_PA_UART2 + 0x3fff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_S3CUART_RX2, + .end = IRQ_S3CUART_ERR2, + .flags = IORESOURCE_IRQ, + } +}; + +static struct resource s3c2410_uart3_resource[] = { + [0] = { + .start = S3C2443_PA_UART3, + .end = S3C2443_PA_UART3 + 0x3fff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_S3CUART_RX3, + .end = IRQ_S3CUART_ERR3, + .flags = IORESOURCE_IRQ, + }, +}; + +struct s3c24xx_uart_resources s3c2410_uart_resources[] __initdata = { + [0] = { + .resources = s3c2410_uart0_resource, + .nr_resources = ARRAY_SIZE(s3c2410_uart0_resource), + }, + [1] = { + .resources = s3c2410_uart1_resource, + .nr_resources = ARRAY_SIZE(s3c2410_uart1_resource), + }, + [2] = { + .resources = s3c2410_uart2_resource, + .nr_resources = ARRAY_SIZE(s3c2410_uart2_resource), + }, + [3] = { + .resources = s3c2410_uart3_resource, + .nr_resources = ARRAY_SIZE(s3c2410_uart3_resource), + }, +}; + +/* LCD Controller */ + +static struct resource s3c_lcd_resource[] = { + [0] = { + .start = S3C24XX_PA_LCD, + .end = S3C24XX_PA_LCD + S3C24XX_SZ_LCD - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_LCD, + .end = IRQ_LCD, + .flags = IORESOURCE_IRQ, + } + +}; + +static u64 s3c_device_lcd_dmamask = 0xffffffffUL; + +struct platform_device s3c_device_lcd = { + .name = "s3c2410-lcd", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_lcd_resource), + .resource = s3c_lcd_resource, + .dev = { + .dma_mask = &s3c_device_lcd_dmamask, + .coherent_dma_mask = 0xffffffffUL + } +}; + +EXPORT_SYMBOL(s3c_device_lcd); + +void __init s3c24xx_fb_set_platdata(struct s3c2410fb_mach_info *pd) +{ + struct s3c2410fb_mach_info *npd; + + npd = kmemdup(pd, sizeof(*npd), GFP_KERNEL); + if (npd) { + s3c_device_lcd.dev.platform_data = npd; + npd->displays = kmemdup(pd->displays, + sizeof(struct s3c2410fb_display) * npd->num_displays, + GFP_KERNEL); + if (!npd->displays) + printk(KERN_ERR "no memory for LCD display data\n"); + } else { + printk(KERN_ERR "no memory for LCD platform data\n"); + } +} + +/* Touchscreen */ + +static struct resource s3c_ts_resource[] = { + [0] = { + .start = S3C24XX_PA_ADC, + .end = S3C24XX_PA_ADC + S3C24XX_SZ_ADC - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_TC, + .end = IRQ_TC, + .flags = IORESOURCE_IRQ, + }, + +}; + +struct platform_device s3c_device_ts = { + .name = "s3c2410-ts", + .id = -1, + .dev.parent = &s3c_device_adc.dev, + .num_resources = ARRAY_SIZE(s3c_ts_resource), + .resource = s3c_ts_resource, +}; +EXPORT_SYMBOL(s3c_device_ts); + +static struct s3c2410_ts_mach_info s3c2410ts_info; + +void __init s3c24xx_ts_set_platdata(struct s3c2410_ts_mach_info *hard_s3c2410ts_info) +{ + memcpy(&s3c2410ts_info, hard_s3c2410ts_info, sizeof(struct s3c2410_ts_mach_info)); + s3c_device_ts.dev.platform_data = &s3c2410ts_info; +} + +/* USB Device (Gadget)*/ + +static struct resource s3c_usbgadget_resource[] = { + [0] = { + .start = S3C24XX_PA_USBDEV, + .end = S3C24XX_PA_USBDEV + S3C24XX_SZ_USBDEV - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_USBD, + .end = IRQ_USBD, + .flags = IORESOURCE_IRQ, + } + +}; + +struct platform_device s3c_device_usbgadget = { + .name = "s3c2410-usbgadget", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_usbgadget_resource), + .resource = s3c_usbgadget_resource, +}; + +EXPORT_SYMBOL(s3c_device_usbgadget); + +void __init s3c24xx_udc_set_platdata(struct s3c2410_udc_mach_info *pd) +{ + struct s3c2410_udc_mach_info *npd; + + npd = kmalloc(sizeof(*npd), GFP_KERNEL); + if (npd) { + memcpy(npd, pd, sizeof(*npd)); + s3c_device_usbgadget.dev.platform_data = npd; + } else { + printk(KERN_ERR "no memory for udc platform data\n"); + } +} + +/* USB High Speed 2.0 Device (Gadget) */ +static struct resource s3c_hsudc_resource[] = { + [0] = { + .start = S3C2416_PA_HSUDC, + .end = S3C2416_PA_HSUDC + S3C2416_SZ_HSUDC - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_USBD, + .end = IRQ_USBD, + .flags = IORESOURCE_IRQ, + } +}; + +static u64 s3c_hsudc_dmamask = DMA_BIT_MASK(32); + +struct platform_device s3c_device_usb_hsudc = { + .name = "s3c-hsudc", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_hsudc_resource), + .resource = s3c_hsudc_resource, + .dev = { + .dma_mask = &s3c_hsudc_dmamask, + .coherent_dma_mask = DMA_BIT_MASK(32), + }, +}; + +void __init s3c24xx_hsudc_set_platdata(struct s3c24xx_hsudc_platdata *pd) +{ + struct s3c24xx_hsudc_platdata *npd; + + npd = kmalloc(sizeof(*npd), GFP_KERNEL); + if (npd) { + memcpy(npd, pd, sizeof(*npd)); + s3c_device_usb_hsudc.dev.platform_data = npd; + } else { + printk(KERN_ERR "no memory for udc platform data\n"); + } +} + +/* IIS */ + +static struct resource s3c_iis_resource[] = { + [0] = { + .start = S3C24XX_PA_IIS, + .end = S3C24XX_PA_IIS + S3C24XX_SZ_IIS -1, + .flags = IORESOURCE_MEM, + } +}; + +static u64 s3c_device_iis_dmamask = 0xffffffffUL; + +struct platform_device s3c_device_iis = { + .name = "s3c24xx-iis", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_iis_resource), + .resource = s3c_iis_resource, + .dev = { + .dma_mask = &s3c_device_iis_dmamask, + .coherent_dma_mask = 0xffffffffUL + } +}; + +EXPORT_SYMBOL(s3c_device_iis); + +/* RTC */ + +static struct resource s3c_rtc_resource[] = { + [0] = { + .start = S3C24XX_PA_RTC, + .end = S3C24XX_PA_RTC + 0xff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_RTC, + .end = IRQ_RTC, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = IRQ_TICK, + .end = IRQ_TICK, + .flags = IORESOURCE_IRQ + } +}; + +struct platform_device s3c_device_rtc = { + .name = "s3c2410-rtc", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_rtc_resource), + .resource = s3c_rtc_resource, +}; + +EXPORT_SYMBOL(s3c_device_rtc); + +/* ADC */ + +static struct resource s3c_adc_resource[] = { + [0] = { + .start = S3C24XX_PA_ADC, + .end = S3C24XX_PA_ADC + S3C24XX_SZ_ADC - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_TC, + .end = IRQ_TC, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .start = IRQ_ADC, + .end = IRQ_ADC, + .flags = IORESOURCE_IRQ, + } + +}; + +struct platform_device s3c_device_adc = { + .name = "s3c24xx-adc", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_adc_resource), + .resource = s3c_adc_resource, +}; + +/* SDI */ + +static struct resource s3c_sdi_resource[] = { + [0] = { + .start = S3C24XX_PA_SDI, + .end = S3C24XX_PA_SDI + S3C24XX_SZ_SDI - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_SDI, + .end = IRQ_SDI, + .flags = IORESOURCE_IRQ, + } + +}; + +struct platform_device s3c_device_sdi = { + .name = "s3c2410-sdi", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_sdi_resource), + .resource = s3c_sdi_resource, +}; + +EXPORT_SYMBOL(s3c_device_sdi); + +void __init s3c24xx_mci_set_platdata(struct s3c24xx_mci_pdata *pdata) +{ + struct s3c24xx_mci_pdata *npd; + + npd = kmemdup(pdata, sizeof(struct s3c24xx_mci_pdata), GFP_KERNEL); + if (!npd) + printk(KERN_ERR "%s: no memory to copy pdata", __func__); + + s3c_device_sdi.dev.platform_data = npd; +} + + +/* SPI (0) */ + +static struct resource s3c_spi0_resource[] = { + [0] = { + .start = S3C24XX_PA_SPI, + .end = S3C24XX_PA_SPI + 0x1f, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_SPI0, + .end = IRQ_SPI0, + .flags = IORESOURCE_IRQ, + } + +}; + +static u64 s3c_device_spi0_dmamask = 0xffffffffUL; + +struct platform_device s3c_device_spi0 = { + .name = "s3c2410-spi", + .id = 0, + .num_resources = ARRAY_SIZE(s3c_spi0_resource), + .resource = s3c_spi0_resource, + .dev = { + .dma_mask = &s3c_device_spi0_dmamask, + .coherent_dma_mask = 0xffffffffUL + } +}; + +EXPORT_SYMBOL(s3c_device_spi0); + +/* SPI (1) */ + +static struct resource s3c_spi1_resource[] = { + [0] = { + .start = S3C24XX_PA_SPI + S3C2410_SPI1, + .end = S3C24XX_PA_SPI + S3C2410_SPI1 + 0x1f, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_SPI1, + .end = IRQ_SPI1, + .flags = IORESOURCE_IRQ, + } + +}; + +static u64 s3c_device_spi1_dmamask = 0xffffffffUL; + +struct platform_device s3c_device_spi1 = { + .name = "s3c2410-spi", + .id = 1, + .num_resources = ARRAY_SIZE(s3c_spi1_resource), + .resource = s3c_spi1_resource, + .dev = { + .dma_mask = &s3c_device_spi1_dmamask, + .coherent_dma_mask = 0xffffffffUL + } +}; + +EXPORT_SYMBOL(s3c_device_spi1); + +#ifdef CONFIG_CPU_S3C2440 + +/* Camif Controller */ + +static struct resource s3c_camif_resource[] = { + [0] = { + .start = S3C2440_PA_CAMIF, + .end = S3C2440_PA_CAMIF + S3C2440_SZ_CAMIF - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_CAM, + .end = IRQ_CAM, + .flags = IORESOURCE_IRQ, + } + +}; + +static u64 s3c_device_camif_dmamask = 0xffffffffUL; + +struct platform_device s3c_device_camif = { + .name = "s3c2440-camif", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_camif_resource), + .resource = s3c_camif_resource, + .dev = { + .dma_mask = &s3c_device_camif_dmamask, + .coherent_dma_mask = 0xffffffffUL + } +}; + +EXPORT_SYMBOL(s3c_device_camif); + +/* AC97 */ + +static struct resource s3c_ac97_resource[] = { + [0] = { + .start = S3C2440_PA_AC97, + .end = S3C2440_PA_AC97 + S3C2440_SZ_AC97 -1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = IRQ_S3C244x_AC97, + .end = IRQ_S3C244x_AC97, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .name = "PCM out", + .start = DMACH_PCM_OUT, + .end = DMACH_PCM_OUT, + .flags = IORESOURCE_DMA, + }, + [3] = { + .name = "PCM in", + .start = DMACH_PCM_IN, + .end = DMACH_PCM_IN, + .flags = IORESOURCE_DMA, + }, + [4] = { + .name = "Mic in", + .start = DMACH_MIC_IN, + .end = DMACH_MIC_IN, + .flags = IORESOURCE_DMA, + }, +}; + +static u64 s3c_device_audio_dmamask = 0xffffffffUL; + +struct platform_device s3c_device_ac97 = { + .name = "samsung-ac97", + .id = -1, + .num_resources = ARRAY_SIZE(s3c_ac97_resource), + .resource = s3c_ac97_resource, + .dev = { + .dma_mask = &s3c_device_audio_dmamask, + .coherent_dma_mask = 0xffffffffUL + } +}; + +EXPORT_SYMBOL(s3c_device_ac97); + +/* ASoC I2S */ + +struct platform_device s3c2412_device_iis = { + .name = "s3c2412-iis", + .id = -1, + .dev = { + .dma_mask = &s3c_device_audio_dmamask, + .coherent_dma_mask = 0xffffffffUL + } +}; + +EXPORT_SYMBOL(s3c2412_device_iis); + +#endif // CONFIG_CPU_S32440 diff --git a/arch/arm/plat-s3c24xx/dma.c b/arch/arm/plat-s3c24xx/dma.c new file mode 100644 index 00000000..0719f49d --- /dev/null +++ b/arch/arm/plat-s3c24xx/dma.c @@ -0,0 +1,1470 @@ +/* linux/arch/arm/plat-s3c24xx/dma.c + * + * Copyright 2003-2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2410 DMA core + * + * http://armlinux.simtec.co.uk/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + + +#ifdef CONFIG_S3C2410_DMA_DEBUG +#define DEBUG +#endif + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/syscore_ops.h> +#include <linux/slab.h> +#include <linux/errno.h> +#include <linux/io.h> + +#include <asm/system.h> +#include <asm/irq.h> +#include <mach/hardware.h> +#include <mach/dma.h> +#include <mach/map.h> + +#include <plat/dma-s3c24xx.h> +#include <plat/regs-dma.h> + +/* io map for dma */ +static void __iomem *dma_base; +static struct kmem_cache *dma_kmem; + +static int dma_channels; + +static struct s3c24xx_dma_selection dma_sel; + + +/* debugging functions */ + +#define BUF_MAGIC (0xcafebabe) + +#define dmawarn(fmt...) printk(KERN_DEBUG fmt) + +#define dma_regaddr(chan, reg) ((chan)->regs + (reg)) + +#if 1 +#define dma_wrreg(chan, reg, val) writel((val), (chan)->regs + (reg)) +#else +static inline void +dma_wrreg(struct s3c2410_dma_chan *chan, int reg, unsigned long val) +{ + pr_debug("writing %08x to register %08x\n",(unsigned int)val,reg); + writel(val, dma_regaddr(chan, reg)); +} +#endif + +#define dma_rdreg(chan, reg) readl((chan)->regs + (reg)) + +/* captured register state for debug */ + +struct s3c2410_dma_regstate { + unsigned long dcsrc; + unsigned long disrc; + unsigned long dstat; + unsigned long dcon; + unsigned long dmsktrig; +}; + +#ifdef CONFIG_S3C2410_DMA_DEBUG + +/* dmadbg_showregs + * + * simple debug routine to print the current state of the dma registers +*/ + +static void +dmadbg_capture(struct s3c2410_dma_chan *chan, struct s3c2410_dma_regstate *regs) +{ + regs->dcsrc = dma_rdreg(chan, S3C2410_DMA_DCSRC); + regs->disrc = dma_rdreg(chan, S3C2410_DMA_DISRC); + regs->dstat = dma_rdreg(chan, S3C2410_DMA_DSTAT); + regs->dcon = dma_rdreg(chan, S3C2410_DMA_DCON); + regs->dmsktrig = dma_rdreg(chan, S3C2410_DMA_DMASKTRIG); +} + +static void +dmadbg_dumpregs(const char *fname, int line, struct s3c2410_dma_chan *chan, + struct s3c2410_dma_regstate *regs) +{ + printk(KERN_DEBUG "dma%d: %s:%d: DCSRC=%08lx, DISRC=%08lx, DSTAT=%08lx DMT=%02lx, DCON=%08lx\n", + chan->number, fname, line, + regs->dcsrc, regs->disrc, regs->dstat, regs->dmsktrig, + regs->dcon); +} + +static void +dmadbg_showchan(const char *fname, int line, struct s3c2410_dma_chan *chan) +{ + struct s3c2410_dma_regstate state; + + dmadbg_capture(chan, &state); + + printk(KERN_DEBUG "dma%d: %s:%d: ls=%d, cur=%p, %p %p\n", + chan->number, fname, line, chan->load_state, + chan->curr, chan->next, chan->end); + + dmadbg_dumpregs(fname, line, chan, &state); +} + +static void +dmadbg_showregs(const char *fname, int line, struct s3c2410_dma_chan *chan) +{ + struct s3c2410_dma_regstate state; + + dmadbg_capture(chan, &state); + dmadbg_dumpregs(fname, line, chan, &state); +} + +#define dbg_showregs(chan) dmadbg_showregs(__func__, __LINE__, (chan)) +#define dbg_showchan(chan) dmadbg_showchan(__func__, __LINE__, (chan)) +#else +#define dbg_showregs(chan) do { } while(0) +#define dbg_showchan(chan) do { } while(0) +#endif /* CONFIG_S3C2410_DMA_DEBUG */ + +/* s3c2410_dma_stats_timeout + * + * Update DMA stats from timeout info +*/ + +static void +s3c2410_dma_stats_timeout(struct s3c2410_dma_stats *stats, int val) +{ + if (stats == NULL) + return; + + if (val > stats->timeout_longest) + stats->timeout_longest = val; + if (val < stats->timeout_shortest) + stats->timeout_shortest = val; + + stats->timeout_avg += val; +} + +/* s3c2410_dma_waitforload + * + * wait for the DMA engine to load a buffer, and update the state accordingly +*/ + +static int +s3c2410_dma_waitforload(struct s3c2410_dma_chan *chan, int line) +{ + int timeout = chan->load_timeout; + int took; + + if (chan->load_state != S3C2410_DMALOAD_1LOADED) { + printk(KERN_ERR "dma%d: s3c2410_dma_waitforload() called in loadstate %d from line %d\n", chan->number, chan->load_state, line); + return 0; + } + + if (chan->stats != NULL) + chan->stats->loads++; + + while (--timeout > 0) { + if ((dma_rdreg(chan, S3C2410_DMA_DSTAT) << (32-20)) != 0) { + took = chan->load_timeout - timeout; + + s3c2410_dma_stats_timeout(chan->stats, took); + + switch (chan->load_state) { + case S3C2410_DMALOAD_1LOADED: + chan->load_state = S3C2410_DMALOAD_1RUNNING; + break; + + default: + printk(KERN_ERR "dma%d: unknown load_state in s3c2410_dma_waitforload() %d\n", chan->number, chan->load_state); + } + + return 1; + } + } + + if (chan->stats != NULL) { + chan->stats->timeout_failed++; + } + + return 0; +} + +/* s3c2410_dma_loadbuffer + * + * load a buffer, and update the channel state +*/ + +static inline int +s3c2410_dma_loadbuffer(struct s3c2410_dma_chan *chan, + struct s3c2410_dma_buf *buf) +{ + unsigned long reload; + + if (buf == NULL) { + dmawarn("buffer is NULL\n"); + return -EINVAL; + } + + pr_debug("s3c2410_chan_loadbuffer: loading buff %p (0x%08lx,0x%06x)\n", + buf, (unsigned long)buf->data, buf->size); + + /* check the state of the channel before we do anything */ + + if (chan->load_state == S3C2410_DMALOAD_1LOADED) { + dmawarn("load_state is S3C2410_DMALOAD_1LOADED\n"); + } + + if (chan->load_state == S3C2410_DMALOAD_1LOADED_1RUNNING) { + dmawarn("state is S3C2410_DMALOAD_1LOADED_1RUNNING\n"); + } + + /* it would seem sensible if we are the last buffer to not bother + * with the auto-reload bit, so that the DMA engine will not try + * and load another transfer after this one has finished... + */ + if (chan->load_state == S3C2410_DMALOAD_NONE) { + pr_debug("load_state is none, checking for noreload (next=%p)\n", + buf->next); + reload = (buf->next == NULL) ? S3C2410_DCON_NORELOAD : 0; + } else { + //pr_debug("load_state is %d => autoreload\n", chan->load_state); + reload = S3C2410_DCON_AUTORELOAD; + } + + if ((buf->data & 0xf0000000) != 0x30000000) { + dmawarn("dmaload: buffer is %p\n", (void *)buf->data); + } + + writel(buf->data, chan->addr_reg); + + dma_wrreg(chan, S3C2410_DMA_DCON, + chan->dcon | reload | (buf->size/chan->xfer_unit)); + + chan->next = buf->next; + + /* update the state of the channel */ + + switch (chan->load_state) { + case S3C2410_DMALOAD_NONE: + chan->load_state = S3C2410_DMALOAD_1LOADED; + break; + + case S3C2410_DMALOAD_1RUNNING: + chan->load_state = S3C2410_DMALOAD_1LOADED_1RUNNING; + break; + + default: + dmawarn("dmaload: unknown state %d in loadbuffer\n", + chan->load_state); + break; + } + + return 0; +} + +/* s3c2410_dma_call_op + * + * small routine to call the op routine with the given op if it has been + * registered +*/ + +static void +s3c2410_dma_call_op(struct s3c2410_dma_chan *chan, enum s3c2410_chan_op op) +{ + if (chan->op_fn != NULL) { + (chan->op_fn)(chan, op); + } +} + +/* s3c2410_dma_buffdone + * + * small wrapper to check if callback routine needs to be called, and + * if so, call it +*/ + +static inline void +s3c2410_dma_buffdone(struct s3c2410_dma_chan *chan, struct s3c2410_dma_buf *buf, + enum s3c2410_dma_buffresult result) +{ +#if 0 + pr_debug("callback_fn=%p, buf=%p, id=%p, size=%d, result=%d\n", + chan->callback_fn, buf, buf->id, buf->size, result); +#endif + + if (chan->callback_fn != NULL) { + (chan->callback_fn)(chan, buf->id, buf->size, result); + } +} + +/* s3c2410_dma_start + * + * start a dma channel going +*/ + +static int s3c2410_dma_start(struct s3c2410_dma_chan *chan) +{ + unsigned long tmp; + unsigned long flags; + + pr_debug("s3c2410_start_dma: channel=%d\n", chan->number); + + local_irq_save(flags); + + if (chan->state == S3C2410_DMA_RUNNING) { + pr_debug("s3c2410_start_dma: already running (%d)\n", chan->state); + local_irq_restore(flags); + return 0; + } + + chan->state = S3C2410_DMA_RUNNING; + + /* check wether there is anything to load, and if not, see + * if we can find anything to load + */ + + if (chan->load_state == S3C2410_DMALOAD_NONE) { + if (chan->next == NULL) { + printk(KERN_ERR "dma%d: channel has nothing loaded\n", + chan->number); + chan->state = S3C2410_DMA_IDLE; + local_irq_restore(flags); + return -EINVAL; + } + + s3c2410_dma_loadbuffer(chan, chan->next); + } + + dbg_showchan(chan); + + /* enable the channel */ + + if (!chan->irq_enabled) { + enable_irq(chan->irq); + chan->irq_enabled = 1; + } + + /* start the channel going */ + + tmp = dma_rdreg(chan, S3C2410_DMA_DMASKTRIG); + tmp &= ~S3C2410_DMASKTRIG_STOP; + tmp |= S3C2410_DMASKTRIG_ON; + dma_wrreg(chan, S3C2410_DMA_DMASKTRIG, tmp); + + pr_debug("dma%d: %08lx to DMASKTRIG\n", chan->number, tmp); + +#if 0 + /* the dma buffer loads should take care of clearing the AUTO + * reloading feature */ + tmp = dma_rdreg(chan, S3C2410_DMA_DCON); + tmp &= ~S3C2410_DCON_NORELOAD; + dma_wrreg(chan, S3C2410_DMA_DCON, tmp); +#endif + + s3c2410_dma_call_op(chan, S3C2410_DMAOP_START); + + dbg_showchan(chan); + + /* if we've only loaded one buffer onto the channel, then chec + * to see if we have another, and if so, try and load it so when + * the first buffer is finished, the new one will be loaded onto + * the channel */ + + if (chan->next != NULL) { + if (chan->load_state == S3C2410_DMALOAD_1LOADED) { + + if (s3c2410_dma_waitforload(chan, __LINE__) == 0) { + pr_debug("%s: buff not yet loaded, no more todo\n", + __func__); + } else { + chan->load_state = S3C2410_DMALOAD_1RUNNING; + s3c2410_dma_loadbuffer(chan, chan->next); + } + + } else if (chan->load_state == S3C2410_DMALOAD_1RUNNING) { + s3c2410_dma_loadbuffer(chan, chan->next); + } + } + + + local_irq_restore(flags); + + return 0; +} + +/* s3c2410_dma_canload + * + * work out if we can queue another buffer into the DMA engine +*/ + +static int +s3c2410_dma_canload(struct s3c2410_dma_chan *chan) +{ + if (chan->load_state == S3C2410_DMALOAD_NONE || + chan->load_state == S3C2410_DMALOAD_1RUNNING) + return 1; + + return 0; +} + +/* s3c2410_dma_enqueue + * + * queue an given buffer for dma transfer. + * + * id the device driver's id information for this buffer + * data the physical address of the buffer data + * size the size of the buffer in bytes + * + * If the channel is not running, then the flag S3C2410_DMAF_AUTOSTART + * is checked, and if set, the channel is started. If this flag isn't set, + * then an error will be returned. + * + * It is possible to queue more than one DMA buffer onto a channel at + * once, and the code will deal with the re-loading of the next buffer + * when necessary. +*/ + +int s3c2410_dma_enqueue(unsigned int channel, void *id, + dma_addr_t data, int size) +{ + struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel); + struct s3c2410_dma_buf *buf; + unsigned long flags; + + if (chan == NULL) + return -EINVAL; + + pr_debug("%s: id=%p, data=%08x, size=%d\n", + __func__, id, (unsigned int)data, size); + + buf = kmem_cache_alloc(dma_kmem, GFP_ATOMIC); + if (buf == NULL) { + pr_debug("%s: out of memory (%ld alloc)\n", + __func__, (long)sizeof(*buf)); + return -ENOMEM; + } + + //pr_debug("%s: new buffer %p\n", __func__, buf); + //dbg_showchan(chan); + + buf->next = NULL; + buf->data = buf->ptr = data; + buf->size = size; + buf->id = id; + buf->magic = BUF_MAGIC; + + local_irq_save(flags); + + if (chan->curr == NULL) { + /* we've got nothing loaded... */ + pr_debug("%s: buffer %p queued onto empty channel\n", + __func__, buf); + + chan->curr = buf; + chan->end = buf; + chan->next = NULL; + } else { + pr_debug("dma%d: %s: buffer %p queued onto non-empty channel\n", + chan->number, __func__, buf); + + if (chan->end == NULL) + pr_debug("dma%d: %s: %p not empty, and chan->end==NULL?\n", + chan->number, __func__, chan); + + chan->end->next = buf; + chan->end = buf; + } + + /* if necessary, update the next buffer field */ + if (chan->next == NULL) + chan->next = buf; + + /* check to see if we can load a buffer */ + if (chan->state == S3C2410_DMA_RUNNING) { + if (chan->load_state == S3C2410_DMALOAD_1LOADED && 1) { + if (s3c2410_dma_waitforload(chan, __LINE__) == 0) { + printk(KERN_ERR "dma%d: loadbuffer:" + "timeout loading buffer\n", + chan->number); + dbg_showchan(chan); + local_irq_restore(flags); + return -EINVAL; + } + } + + while (s3c2410_dma_canload(chan) && chan->next != NULL) { + s3c2410_dma_loadbuffer(chan, chan->next); + } + } else if (chan->state == S3C2410_DMA_IDLE) { + if (chan->flags & S3C2410_DMAF_AUTOSTART) { + s3c2410_dma_ctrl(chan->number | DMACH_LOW_LEVEL, + S3C2410_DMAOP_START); + } + } + + local_irq_restore(flags); + return 0; +} + +EXPORT_SYMBOL(s3c2410_dma_enqueue); + +static inline void +s3c2410_dma_freebuf(struct s3c2410_dma_buf *buf) +{ + int magicok = (buf->magic == BUF_MAGIC); + + buf->magic = -1; + + if (magicok) { + kmem_cache_free(dma_kmem, buf); + } else { + printk("s3c2410_dma_freebuf: buff %p with bad magic\n", buf); + } +} + +/* s3c2410_dma_lastxfer + * + * called when the system is out of buffers, to ensure that the channel + * is prepared for shutdown. +*/ + +static inline void +s3c2410_dma_lastxfer(struct s3c2410_dma_chan *chan) +{ +#if 0 + pr_debug("dma%d: s3c2410_dma_lastxfer: load_state %d\n", + chan->number, chan->load_state); +#endif + + switch (chan->load_state) { + case S3C2410_DMALOAD_NONE: + break; + + case S3C2410_DMALOAD_1LOADED: + if (s3c2410_dma_waitforload(chan, __LINE__) == 0) { + /* flag error? */ + printk(KERN_ERR "dma%d: timeout waiting for load (%s)\n", + chan->number, __func__); + return; + } + break; + + case S3C2410_DMALOAD_1LOADED_1RUNNING: + /* I believe in this case we do not have anything to do + * until the next buffer comes along, and we turn off the + * reload */ + return; + + default: + pr_debug("dma%d: lastxfer: unhandled load_state %d with no next\n", + chan->number, chan->load_state); + return; + + } + + /* hopefully this'll shut the damned thing up after the transfer... */ + dma_wrreg(chan, S3C2410_DMA_DCON, chan->dcon | S3C2410_DCON_NORELOAD); +} + + +#define dmadbg2(x...) + +static irqreturn_t +s3c2410_dma_irq(int irq, void *devpw) +{ + struct s3c2410_dma_chan *chan = (struct s3c2410_dma_chan *)devpw; + struct s3c2410_dma_buf *buf; + + buf = chan->curr; + + dbg_showchan(chan); + + /* modify the channel state */ + + switch (chan->load_state) { + case S3C2410_DMALOAD_1RUNNING: + /* TODO - if we are running only one buffer, we probably + * want to reload here, and then worry about the buffer + * callback */ + + chan->load_state = S3C2410_DMALOAD_NONE; + break; + + case S3C2410_DMALOAD_1LOADED: + /* iirc, we should go back to NONE loaded here, we + * had a buffer, and it was never verified as being + * loaded. + */ + + chan->load_state = S3C2410_DMALOAD_NONE; + break; + + case S3C2410_DMALOAD_1LOADED_1RUNNING: + /* we'll worry about checking to see if another buffer is + * ready after we've called back the owner. This should + * ensure we do not wait around too long for the DMA + * engine to start the next transfer + */ + + chan->load_state = S3C2410_DMALOAD_1LOADED; + break; + + case S3C2410_DMALOAD_NONE: + printk(KERN_ERR "dma%d: IRQ with no loaded buffer?\n", + chan->number); + break; + + default: + printk(KERN_ERR "dma%d: IRQ in invalid load_state %d\n", + chan->number, chan->load_state); + break; + } + + if (buf != NULL) { + /* update the chain to make sure that if we load any more + * buffers when we call the callback function, things should + * work properly */ + + chan->curr = buf->next; + buf->next = NULL; + + if (buf->magic != BUF_MAGIC) { + printk(KERN_ERR "dma%d: %s: buf %p incorrect magic\n", + chan->number, __func__, buf); + return IRQ_HANDLED; + } + + s3c2410_dma_buffdone(chan, buf, S3C2410_RES_OK); + + /* free resouces */ + s3c2410_dma_freebuf(buf); + } else { + } + + /* only reload if the channel is still running... our buffer done + * routine may have altered the state by requesting the dma channel + * to stop or shutdown... */ + + /* todo: check that when the channel is shut-down from inside this + * function, we cope with unsetting reload, etc */ + + if (chan->next != NULL && chan->state != S3C2410_DMA_IDLE) { + unsigned long flags; + + switch (chan->load_state) { + case S3C2410_DMALOAD_1RUNNING: + /* don't need to do anything for this state */ + break; + + case S3C2410_DMALOAD_NONE: + /* can load buffer immediately */ + break; + + case S3C2410_DMALOAD_1LOADED: + if (s3c2410_dma_waitforload(chan, __LINE__) == 0) { + /* flag error? */ + printk(KERN_ERR "dma%d: timeout waiting for load (%s)\n", + chan->number, __func__); + return IRQ_HANDLED; + } + + break; + + case S3C2410_DMALOAD_1LOADED_1RUNNING: + goto no_load; + + default: + printk(KERN_ERR "dma%d: unknown load_state in irq, %d\n", + chan->number, chan->load_state); + return IRQ_HANDLED; + } + + local_irq_save(flags); + s3c2410_dma_loadbuffer(chan, chan->next); + local_irq_restore(flags); + } else { + s3c2410_dma_lastxfer(chan); + + /* see if we can stop this channel.. */ + if (chan->load_state == S3C2410_DMALOAD_NONE) { + pr_debug("dma%d: end of transfer, stopping channel (%ld)\n", + chan->number, jiffies); + s3c2410_dma_ctrl(chan->number | DMACH_LOW_LEVEL, + S3C2410_DMAOP_STOP); + } + } + + no_load: + return IRQ_HANDLED; +} + +static struct s3c2410_dma_chan *s3c2410_dma_map_channel(int channel); + +/* s3c2410_request_dma + * + * get control of an dma channel +*/ + +int s3c2410_dma_request(enum dma_ch channel, + struct s3c2410_dma_client *client, + void *dev) +{ + struct s3c2410_dma_chan *chan; + unsigned long flags; + int err; + + pr_debug("dma%d: s3c2410_request_dma: client=%s, dev=%p\n", + channel, client->name, dev); + + local_irq_save(flags); + + chan = s3c2410_dma_map_channel(channel); + if (chan == NULL) { + local_irq_restore(flags); + return -EBUSY; + } + + dbg_showchan(chan); + + chan->client = client; + chan->in_use = 1; + + if (!chan->irq_claimed) { + pr_debug("dma%d: %s : requesting irq %d\n", + channel, __func__, chan->irq); + + chan->irq_claimed = 1; + local_irq_restore(flags); + + err = request_irq(chan->irq, s3c2410_dma_irq, IRQF_DISABLED, + client->name, (void *)chan); + + local_irq_save(flags); + + if (err) { + chan->in_use = 0; + chan->irq_claimed = 0; + local_irq_restore(flags); + + printk(KERN_ERR "%s: cannot get IRQ %d for DMA %d\n", + client->name, chan->irq, chan->number); + return err; + } + + chan->irq_enabled = 1; + } + + local_irq_restore(flags); + + /* need to setup */ + + pr_debug("%s: channel initialised, %p\n", __func__, chan); + + return chan->number | DMACH_LOW_LEVEL; +} + +EXPORT_SYMBOL(s3c2410_dma_request); + +/* s3c2410_dma_free + * + * release the given channel back to the system, will stop and flush + * any outstanding transfers, and ensure the channel is ready for the + * next claimant. + * + * Note, although a warning is currently printed if the freeing client + * info is not the same as the registrant's client info, the free is still + * allowed to go through. +*/ + +int s3c2410_dma_free(enum dma_ch channel, struct s3c2410_dma_client *client) +{ + struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel); + unsigned long flags; + + if (chan == NULL) + return -EINVAL; + + local_irq_save(flags); + + if (chan->client != client) { + printk(KERN_WARNING "dma%d: possible free from different client (channel %p, passed %p)\n", + channel, chan->client, client); + } + + /* sort out stopping and freeing the channel */ + + if (chan->state != S3C2410_DMA_IDLE) { + pr_debug("%s: need to stop dma channel %p\n", + __func__, chan); + + /* possibly flush the channel */ + s3c2410_dma_ctrl(channel, S3C2410_DMAOP_STOP); + } + + chan->client = NULL; + chan->in_use = 0; + + if (chan->irq_claimed) + free_irq(chan->irq, (void *)chan); + + chan->irq_claimed = 0; + + if (!(channel & DMACH_LOW_LEVEL)) + s3c_dma_chan_map[channel] = NULL; + + local_irq_restore(flags); + + return 0; +} + +EXPORT_SYMBOL(s3c2410_dma_free); + +static int s3c2410_dma_dostop(struct s3c2410_dma_chan *chan) +{ + unsigned long flags; + unsigned long tmp; + + pr_debug("%s:\n", __func__); + + dbg_showchan(chan); + + local_irq_save(flags); + + s3c2410_dma_call_op(chan, S3C2410_DMAOP_STOP); + + tmp = dma_rdreg(chan, S3C2410_DMA_DMASKTRIG); + tmp |= S3C2410_DMASKTRIG_STOP; + //tmp &= ~S3C2410_DMASKTRIG_ON; + dma_wrreg(chan, S3C2410_DMA_DMASKTRIG, tmp); + +#if 0 + /* should also clear interrupts, according to WinCE BSP */ + tmp = dma_rdreg(chan, S3C2410_DMA_DCON); + tmp |= S3C2410_DCON_NORELOAD; + dma_wrreg(chan, S3C2410_DMA_DCON, tmp); +#endif + + /* should stop do this, or should we wait for flush? */ + chan->state = S3C2410_DMA_IDLE; + chan->load_state = S3C2410_DMALOAD_NONE; + + local_irq_restore(flags); + + return 0; +} + +static void s3c2410_dma_waitforstop(struct s3c2410_dma_chan *chan) +{ + unsigned long tmp; + unsigned int timeout = 0x10000; + + while (timeout-- > 0) { + tmp = dma_rdreg(chan, S3C2410_DMA_DMASKTRIG); + + if (!(tmp & S3C2410_DMASKTRIG_ON)) + return; + } + + pr_debug("dma%d: failed to stop?\n", chan->number); +} + + +/* s3c2410_dma_flush + * + * stop the channel, and remove all current and pending transfers +*/ + +static int s3c2410_dma_flush(struct s3c2410_dma_chan *chan) +{ + struct s3c2410_dma_buf *buf, *next; + unsigned long flags; + + pr_debug("%s: chan %p (%d)\n", __func__, chan, chan->number); + + dbg_showchan(chan); + + local_irq_save(flags); + + if (chan->state != S3C2410_DMA_IDLE) { + pr_debug("%s: stopping channel...\n", __func__ ); + s3c2410_dma_ctrl(chan->number, S3C2410_DMAOP_STOP); + } + + buf = chan->curr; + if (buf == NULL) + buf = chan->next; + + chan->curr = chan->next = chan->end = NULL; + + if (buf != NULL) { + for ( ; buf != NULL; buf = next) { + next = buf->next; + + pr_debug("%s: free buffer %p, next %p\n", + __func__, buf, buf->next); + + s3c2410_dma_buffdone(chan, buf, S3C2410_RES_ABORT); + s3c2410_dma_freebuf(buf); + } + } + + dbg_showregs(chan); + + s3c2410_dma_waitforstop(chan); + +#if 0 + /* should also clear interrupts, according to WinCE BSP */ + { + unsigned long tmp; + + tmp = dma_rdreg(chan, S3C2410_DMA_DCON); + tmp |= S3C2410_DCON_NORELOAD; + dma_wrreg(chan, S3C2410_DMA_DCON, tmp); + } +#endif + + dbg_showregs(chan); + + local_irq_restore(flags); + + return 0; +} + +static int s3c2410_dma_started(struct s3c2410_dma_chan *chan) +{ + unsigned long flags; + + local_irq_save(flags); + + dbg_showchan(chan); + + /* if we've only loaded one buffer onto the channel, then chec + * to see if we have another, and if so, try and load it so when + * the first buffer is finished, the new one will be loaded onto + * the channel */ + + if (chan->next != NULL) { + if (chan->load_state == S3C2410_DMALOAD_1LOADED) { + + if (s3c2410_dma_waitforload(chan, __LINE__) == 0) { + pr_debug("%s: buff not yet loaded, no more todo\n", + __func__); + } else { + chan->load_state = S3C2410_DMALOAD_1RUNNING; + s3c2410_dma_loadbuffer(chan, chan->next); + } + + } else if (chan->load_state == S3C2410_DMALOAD_1RUNNING) { + s3c2410_dma_loadbuffer(chan, chan->next); + } + } + + + local_irq_restore(flags); + + return 0; + +} + +int +s3c2410_dma_ctrl(enum dma_ch channel, enum s3c2410_chan_op op) +{ + struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel); + + if (chan == NULL) + return -EINVAL; + + switch (op) { + case S3C2410_DMAOP_START: + return s3c2410_dma_start(chan); + + case S3C2410_DMAOP_STOP: + return s3c2410_dma_dostop(chan); + + case S3C2410_DMAOP_PAUSE: + case S3C2410_DMAOP_RESUME: + return -ENOENT; + + case S3C2410_DMAOP_FLUSH: + return s3c2410_dma_flush(chan); + + case S3C2410_DMAOP_STARTED: + return s3c2410_dma_started(chan); + + case S3C2410_DMAOP_TIMEOUT: + return 0; + + } + + return -ENOENT; /* unknown, don't bother */ +} + +EXPORT_SYMBOL(s3c2410_dma_ctrl); + +/* DMA configuration for each channel + * + * DISRCC -> source of the DMA (AHB,APB) + * DISRC -> source address of the DMA + * DIDSTC -> destination of the DMA (AHB,APD) + * DIDST -> destination address of the DMA +*/ + +/* s3c2410_dma_config + * + * xfersize: size of unit in bytes (1,2,4) +*/ + +int s3c2410_dma_config(enum dma_ch channel, + int xferunit) +{ + struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel); + unsigned int dcon; + + pr_debug("%s: chan=%d, xfer_unit=%d\n", __func__, channel, xferunit); + + if (chan == NULL) + return -EINVAL; + + dcon = chan->dcon & dma_sel.dcon_mask; + pr_debug("%s: dcon is %08x\n", __func__, dcon); + + switch (chan->req_ch) { + case DMACH_I2S_IN: + case DMACH_I2S_OUT: + case DMACH_PCM_IN: + case DMACH_PCM_OUT: + case DMACH_MIC_IN: + default: + dcon |= S3C2410_DCON_HANDSHAKE; + dcon |= S3C2410_DCON_SYNC_PCLK; + break; + + case DMACH_SDI: + /* note, ensure if need HANDSHAKE or not */ + dcon |= S3C2410_DCON_SYNC_PCLK; + break; + + case DMACH_XD0: + case DMACH_XD1: + dcon |= S3C2410_DCON_HANDSHAKE; + dcon |= S3C2410_DCON_SYNC_HCLK; + break; + } + + switch (xferunit) { + case 1: + dcon |= S3C2410_DCON_BYTE; + break; + + case 2: + dcon |= S3C2410_DCON_HALFWORD; + break; + + case 4: + dcon |= S3C2410_DCON_WORD; + break; + + default: + pr_debug("%s: bad transfer size %d\n", __func__, xferunit); + return -EINVAL; + } + + dcon |= S3C2410_DCON_HWTRIG; + dcon |= S3C2410_DCON_INTREQ; + + pr_debug("%s: dcon now %08x\n", __func__, dcon); + + chan->dcon = dcon; + chan->xfer_unit = xferunit; + + return 0; +} + +EXPORT_SYMBOL(s3c2410_dma_config); + + +/* s3c2410_dma_devconfig + * + * configure the dma source/destination hardware type and address + * + * source: S3C2410_DMASRC_HW: source is hardware + * S3C2410_DMASRC_MEM: source is memory + * + * devaddr: physical address of the source +*/ + +int s3c2410_dma_devconfig(enum dma_ch channel, + enum s3c2410_dmasrc source, + unsigned long devaddr) +{ + struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel); + unsigned int hwcfg; + + if (chan == NULL) + return -EINVAL; + + pr_debug("%s: source=%d, devaddr=%08lx\n", + __func__, (int)source, devaddr); + + chan->source = source; + chan->dev_addr = devaddr; + + switch (chan->req_ch) { + case DMACH_XD0: + case DMACH_XD1: + hwcfg = 0; /* AHB */ + break; + + default: + hwcfg = S3C2410_DISRCC_APB; + } + + /* always assume our peripheral desintation is a fixed + * address in memory. */ + hwcfg |= S3C2410_DISRCC_INC; + + switch (source) { + case S3C2410_DMASRC_HW: + /* source is hardware */ + pr_debug("%s: hw source, devaddr=%08lx, hwcfg=%d\n", + __func__, devaddr, hwcfg); + dma_wrreg(chan, S3C2410_DMA_DISRCC, hwcfg & 3); + dma_wrreg(chan, S3C2410_DMA_DISRC, devaddr); + dma_wrreg(chan, S3C2410_DMA_DIDSTC, (0<<1) | (0<<0)); + + chan->addr_reg = dma_regaddr(chan, S3C2410_DMA_DIDST); + break; + + case S3C2410_DMASRC_MEM: + /* source is memory */ + pr_debug("%s: mem source, devaddr=%08lx, hwcfg=%d\n", + __func__, devaddr, hwcfg); + dma_wrreg(chan, S3C2410_DMA_DISRCC, (0<<1) | (0<<0)); + dma_wrreg(chan, S3C2410_DMA_DIDST, devaddr); + dma_wrreg(chan, S3C2410_DMA_DIDSTC, hwcfg & 3); + + chan->addr_reg = dma_regaddr(chan, S3C2410_DMA_DISRC); + break; + + default: + printk(KERN_ERR "dma%d: invalid source type (%d)\n", + channel, source); + + return -EINVAL; + } + + if (dma_sel.direction != NULL) + (dma_sel.direction)(chan, chan->map, source); + + return 0; +} + +EXPORT_SYMBOL(s3c2410_dma_devconfig); + +/* s3c2410_dma_getposition + * + * returns the current transfer points for the dma source and destination +*/ + +int s3c2410_dma_getposition(enum dma_ch channel, dma_addr_t *src, dma_addr_t *dst) +{ + struct s3c2410_dma_chan *chan = s3c_dma_lookup_channel(channel); + + if (chan == NULL) + return -EINVAL; + + if (src != NULL) + *src = dma_rdreg(chan, S3C2410_DMA_DCSRC); + + if (dst != NULL) + *dst = dma_rdreg(chan, S3C2410_DMA_DCDST); + + return 0; +} + +EXPORT_SYMBOL(s3c2410_dma_getposition); + +/* system core operations */ + +#ifdef CONFIG_PM + +static void s3c2410_dma_suspend_chan(struct s3c2410_dma_chan *cp) +{ + printk(KERN_DEBUG "suspending dma channel %d\n", cp->number); + + if (dma_rdreg(cp, S3C2410_DMA_DMASKTRIG) & S3C2410_DMASKTRIG_ON) { + /* the dma channel is still working, which is probably + * a bad thing to do over suspend/resume. We stop the + * channel and assume that the client is either going to + * retry after resume, or that it is broken. + */ + + printk(KERN_INFO "dma: stopping channel %d due to suspend\n", + cp->number); + + s3c2410_dma_dostop(cp); + } +} + +static int s3c2410_dma_suspend(void) +{ + struct s3c2410_dma_chan *cp = s3c2410_chans; + int channel; + + for (channel = 0; channel < dma_channels; cp++, channel++) + s3c2410_dma_suspend_chan(cp); + + return 0; +} + +static void s3c2410_dma_resume_chan(struct s3c2410_dma_chan *cp) +{ + unsigned int no = cp->number | DMACH_LOW_LEVEL; + + /* restore channel's hardware configuration */ + + if (!cp->in_use) + return; + + printk(KERN_INFO "dma%d: restoring configuration\n", cp->number); + + s3c2410_dma_config(no, cp->xfer_unit); + s3c2410_dma_devconfig(no, cp->source, cp->dev_addr); + + /* re-select the dma source for this channel */ + + if (cp->map != NULL) + dma_sel.select(cp, cp->map); +} + +static void s3c2410_dma_resume(void) +{ + struct s3c2410_dma_chan *cp = s3c2410_chans + dma_channels - 1; + int channel; + + for (channel = dma_channels - 1; channel >= 0; cp--, channel--) + s3c2410_dma_resume_chan(cp); +} + +#else +#define s3c2410_dma_suspend NULL +#define s3c2410_dma_resume NULL +#endif /* CONFIG_PM */ + +struct syscore_ops dma_syscore_ops = { + .suspend = s3c2410_dma_suspend, + .resume = s3c2410_dma_resume, +}; + +/* kmem cache implementation */ + +static void s3c2410_dma_cache_ctor(void *p) +{ + memset(p, 0, sizeof(struct s3c2410_dma_buf)); +} + +/* initialisation code */ + +static int __init s3c24xx_dma_syscore_init(void) +{ + register_syscore_ops(&dma_syscore_ops); + + return 0; +} + +late_initcall(s3c24xx_dma_syscore_init); + +int __init s3c24xx_dma_init(unsigned int channels, unsigned int irq, + unsigned int stride) +{ + struct s3c2410_dma_chan *cp; + int channel; + int ret; + + printk("S3C24XX DMA Driver, Copyright 2003-2006 Simtec Electronics\n"); + + dma_channels = channels; + + dma_base = ioremap(S3C24XX_PA_DMA, stride * channels); + if (dma_base == NULL) { + printk(KERN_ERR "dma failed to remap register block\n"); + return -ENOMEM; + } + + dma_kmem = kmem_cache_create("dma_desc", + sizeof(struct s3c2410_dma_buf), 0, + SLAB_HWCACHE_ALIGN, + s3c2410_dma_cache_ctor); + + if (dma_kmem == NULL) { + printk(KERN_ERR "dma failed to make kmem cache\n"); + ret = -ENOMEM; + goto err; + } + + for (channel = 0; channel < channels; channel++) { + cp = &s3c2410_chans[channel]; + + memset(cp, 0, sizeof(struct s3c2410_dma_chan)); + + /* dma channel irqs are in order.. */ + cp->number = channel; + cp->irq = channel + irq; + cp->regs = dma_base + (channel * stride); + + /* point current stats somewhere */ + cp->stats = &cp->stats_store; + cp->stats_store.timeout_shortest = LONG_MAX; + + /* basic channel configuration */ + + cp->load_timeout = 1<<18; + + printk("DMA channel %d at %p, irq %d\n", + cp->number, cp->regs, cp->irq); + } + + return 0; + + err: + kmem_cache_destroy(dma_kmem); + iounmap(dma_base); + dma_base = NULL; + return ret; +} + +int __init s3c2410_dma_init(void) +{ + return s3c24xx_dma_init(4, IRQ_DMA0, 0x40); +} + +static inline int is_channel_valid(unsigned int channel) +{ + return (channel & DMA_CH_VALID); +} + +static struct s3c24xx_dma_order *dma_order; + + +/* s3c2410_dma_map_channel() + * + * turn the virtual channel number into a real, and un-used hardware + * channel. + * + * first, try the dma ordering given to us by either the relevant + * dma code, or the board. Then just find the first usable free + * channel +*/ + +static struct s3c2410_dma_chan *s3c2410_dma_map_channel(int channel) +{ + struct s3c24xx_dma_order_ch *ord = NULL; + struct s3c24xx_dma_map *ch_map; + struct s3c2410_dma_chan *dmach; + int ch; + + if (dma_sel.map == NULL || channel > dma_sel.map_size) + return NULL; + + ch_map = dma_sel.map + channel; + + /* first, try the board mapping */ + + if (dma_order) { + ord = &dma_order->channels[channel]; + + for (ch = 0; ch < dma_channels; ch++) { + int tmp; + if (!is_channel_valid(ord->list[ch])) + continue; + + tmp = ord->list[ch] & ~DMA_CH_VALID; + if (s3c2410_chans[tmp].in_use == 0) { + ch = tmp; + goto found; + } + } + + if (ord->flags & DMA_CH_NEVER) + return NULL; + } + + /* second, search the channel map for first free */ + + for (ch = 0; ch < dma_channels; ch++) { + if (!is_channel_valid(ch_map->channels[ch])) + continue; + + if (s3c2410_chans[ch].in_use == 0) { + printk("mapped channel %d to %d\n", channel, ch); + break; + } + } + + if (ch >= dma_channels) + return NULL; + + /* update our channel mapping */ + + found: + dmach = &s3c2410_chans[ch]; + dmach->map = ch_map; + dmach->req_ch = channel; + s3c_dma_chan_map[channel] = dmach; + + /* select the channel */ + + (dma_sel.select)(dmach, ch_map); + + return dmach; +} + +static int s3c24xx_dma_check_entry(struct s3c24xx_dma_map *map, int ch) +{ + return 0; +} + +int __init s3c24xx_dma_init_map(struct s3c24xx_dma_selection *sel) +{ + struct s3c24xx_dma_map *nmap; + size_t map_sz = sizeof(*nmap) * sel->map_size; + int ptr; + + nmap = kmalloc(map_sz, GFP_KERNEL); + if (nmap == NULL) + return -ENOMEM; + + memcpy(nmap, sel->map, map_sz); + memcpy(&dma_sel, sel, sizeof(*sel)); + + dma_sel.map = nmap; + + for (ptr = 0; ptr < sel->map_size; ptr++) + s3c24xx_dma_check_entry(nmap+ptr, ptr); + + return 0; +} + +int __init s3c24xx_dma_order_set(struct s3c24xx_dma_order *ord) +{ + struct s3c24xx_dma_order *nord = dma_order; + + if (nord == NULL) + nord = kmalloc(sizeof(struct s3c24xx_dma_order), GFP_KERNEL); + + if (nord == NULL) { + printk(KERN_ERR "no memory to store dma channel order\n"); + return -ENOMEM; + } + + dma_order = nord; + memcpy(nord, ord, sizeof(struct s3c24xx_dma_order)); + return 0; +} diff --git a/arch/arm/plat-s3c24xx/gpio.c b/arch/arm/plat-s3c24xx/gpio.c new file mode 100644 index 00000000..2f3d7c08 --- /dev/null +++ b/arch/arm/plat-s3c24xx/gpio.c @@ -0,0 +1,96 @@ +/* linux/arch/arm/plat-s3c24xx/gpio.c + * + * Copyright (c) 2004-2010 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX GPIO support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/gpio.h> +#include <linux/io.h> + +#include <mach/hardware.h> +#include <mach/gpio-fns.h> +#include <asm/irq.h> + +#include <mach/regs-gpio.h> + +#include <plat/gpio-core.h> + +/* gpiolib wrappers until these are totally eliminated */ + +void s3c2410_gpio_pullup(unsigned int pin, unsigned int to) +{ + int ret; + + WARN_ON(to); /* should be none of these left */ + + if (!to) { + /* if pull is enabled, try first with up, and if that + * fails, try using down */ + + ret = s3c_gpio_setpull(pin, S3C_GPIO_PULL_UP); + if (ret) + s3c_gpio_setpull(pin, S3C_GPIO_PULL_DOWN); + } else { + s3c_gpio_setpull(pin, S3C_GPIO_PULL_NONE); + } +} +EXPORT_SYMBOL(s3c2410_gpio_pullup); + +void s3c2410_gpio_setpin(unsigned int pin, unsigned int to) +{ + /* do this via gpiolib until all users removed */ + + gpio_request(pin, "temporary"); + gpio_set_value(pin, to); + gpio_free(pin); +} + +EXPORT_SYMBOL(s3c2410_gpio_setpin); + +unsigned int s3c2410_gpio_getpin(unsigned int pin) +{ + struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin); + unsigned long offs = pin - chip->chip.base; + + return __raw_readl(chip->base + 0x04) & (1<< offs); +} + +EXPORT_SYMBOL(s3c2410_gpio_getpin); + +unsigned int s3c2410_modify_misccr(unsigned int clear, unsigned int change) +{ + unsigned long flags; + unsigned long misccr; + + local_irq_save(flags); + misccr = __raw_readl(S3C24XX_MISCCR); + misccr &= ~clear; + misccr ^= change; + __raw_writel(misccr, S3C24XX_MISCCR); + local_irq_restore(flags); + + return misccr; +} + +EXPORT_SYMBOL(s3c2410_modify_misccr); diff --git a/arch/arm/plat-s3c24xx/gpiolib.c b/arch/arm/plat-s3c24xx/gpiolib.c new file mode 100644 index 00000000..243b6411 --- /dev/null +++ b/arch/arm/plat-s3c24xx/gpiolib.c @@ -0,0 +1,229 @@ +/* linux/arch/arm/plat-s3c24xx/gpiolib.c + * + * Copyright (c) 2008-2010 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX GPIOlib support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. +*/ + +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/sysdev.h> +#include <linux/ioport.h> +#include <linux/io.h> +#include <linux/gpio.h> + +#include <plat/gpio-core.h> +#include <plat/gpio-cfg.h> +#include <plat/gpio-cfg-helpers.h> +#include <mach/hardware.h> +#include <asm/irq.h> +#include <plat/pm.h> + +#include <mach/regs-gpio.h> + +static int s3c24xx_gpiolib_banka_input(struct gpio_chip *chip, unsigned offset) +{ + return -EINVAL; +} + +static int s3c24xx_gpiolib_banka_output(struct gpio_chip *chip, + unsigned offset, int value) +{ + struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip); + void __iomem *base = ourchip->base; + unsigned long flags; + unsigned long dat; + unsigned long con; + + local_irq_save(flags); + + con = __raw_readl(base + 0x00); + dat = __raw_readl(base + 0x04); + + dat &= ~(1 << offset); + if (value) + dat |= 1 << offset; + + __raw_writel(dat, base + 0x04); + + con &= ~(1 << offset); + + __raw_writel(con, base + 0x00); + __raw_writel(dat, base + 0x04); + + local_irq_restore(flags); + return 0; +} + +static int s3c24xx_gpiolib_bankf_toirq(struct gpio_chip *chip, unsigned offset) +{ + if (offset < 4) + return IRQ_EINT0 + offset; + + if (offset < 8) + return IRQ_EINT4 + offset - 4; + + return -EINVAL; +} + +static struct s3c_gpio_cfg s3c24xx_gpiocfg_banka = { + .set_config = s3c_gpio_setcfg_s3c24xx_a, + .get_config = s3c_gpio_getcfg_s3c24xx_a, +}; + +struct s3c_gpio_cfg s3c24xx_gpiocfg_default = { + .set_config = s3c_gpio_setcfg_s3c24xx, + .get_config = s3c_gpio_getcfg_s3c24xx, +}; + +struct s3c_gpio_chip s3c24xx_gpios[] = { + [0] = { + .base = S3C2410_GPACON, + .pm = __gpio_pm(&s3c_gpio_pm_1bit), + .config = &s3c24xx_gpiocfg_banka, + .chip = { + .base = S3C2410_GPA(0), + .owner = THIS_MODULE, + .label = "GPIOA", + .ngpio = 24, + .direction_input = s3c24xx_gpiolib_banka_input, + .direction_output = s3c24xx_gpiolib_banka_output, + }, + }, + [1] = { + .base = S3C2410_GPBCON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .chip = { + .base = S3C2410_GPB(0), + .owner = THIS_MODULE, + .label = "GPIOB", + .ngpio = 16, + }, + }, + [2] = { + .base = S3C2410_GPCCON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .chip = { + .base = S3C2410_GPC(0), + .owner = THIS_MODULE, + .label = "GPIOC", + .ngpio = 16, + }, + }, + [3] = { + .base = S3C2410_GPDCON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .chip = { + .base = S3C2410_GPD(0), + .owner = THIS_MODULE, + .label = "GPIOD", + .ngpio = 16, + }, + }, + [4] = { + .base = S3C2410_GPECON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .chip = { + .base = S3C2410_GPE(0), + .label = "GPIOE", + .owner = THIS_MODULE, + .ngpio = 16, + }, + }, + [5] = { + .base = S3C2410_GPFCON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .chip = { + .base = S3C2410_GPF(0), + .owner = THIS_MODULE, + .label = "GPIOF", + .ngpio = 8, + .to_irq = s3c24xx_gpiolib_bankf_toirq, + }, + }, + [6] = { + .base = S3C2410_GPGCON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .irq_base = IRQ_EINT8, + .chip = { + .base = S3C2410_GPG(0), + .owner = THIS_MODULE, + .label = "GPIOG", + .ngpio = 16, + .to_irq = samsung_gpiolib_to_irq, + }, + }, { + .base = S3C2410_GPHCON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .chip = { + .base = S3C2410_GPH(0), + .owner = THIS_MODULE, + .label = "GPIOH", + .ngpio = 11, + }, + }, + /* GPIOS for the S3C2443 and later devices. */ + { + .base = S3C2440_GPJCON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .chip = { + .base = S3C2410_GPJ(0), + .owner = THIS_MODULE, + .label = "GPIOJ", + .ngpio = 16, + }, + }, { + .base = S3C2443_GPKCON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .chip = { + .base = S3C2410_GPK(0), + .owner = THIS_MODULE, + .label = "GPIOK", + .ngpio = 16, + }, + }, { + .base = S3C2443_GPLCON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .chip = { + .base = S3C2410_GPL(0), + .owner = THIS_MODULE, + .label = "GPIOL", + .ngpio = 15, + }, + }, { + .base = S3C2443_GPMCON, + .pm = __gpio_pm(&s3c_gpio_pm_2bit), + .chip = { + .base = S3C2410_GPM(0), + .owner = THIS_MODULE, + .label = "GPIOM", + .ngpio = 2, + }, + }, +}; + + +static __init int s3c24xx_gpiolib_init(void) +{ + struct s3c_gpio_chip *chip = s3c24xx_gpios; + int gpn; + + for (gpn = 0; gpn < ARRAY_SIZE(s3c24xx_gpios); gpn++, chip++) { + if (!chip->config) + chip->config = &s3c24xx_gpiocfg_default; + + s3c_gpiolib_add(chip); + } + + return 0; +} + +core_initcall(s3c24xx_gpiolib_init); diff --git a/arch/arm/plat-s3c24xx/include/mach/pwm-clock.h b/arch/arm/plat-s3c24xx/include/mach/pwm-clock.h new file mode 100644 index 00000000..a087de21 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/mach/pwm-clock.h @@ -0,0 +1,55 @@ +/* linux/arch/arm/plat-s3c24xx/include/mach/pwm-clock.h + * + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * S3C24xx - pwm clock and timer support + */ + +/** + * pwm_cfg_src_is_tclk() - return whether the given mux config is a tclk + * @cfg: The timer TCFG1 register bits shifted down to 0. + * + * Return true if the given configuration from TCFG1 is a TCLK instead + * any of the TDIV clocks. + */ +static inline int pwm_cfg_src_is_tclk(unsigned long tcfg) +{ + return tcfg == S3C2410_TCFG1_MUX_TCLK; +} + +/** + * tcfg_to_divisor() - convert tcfg1 setting to a divisor + * @tcfg1: The tcfg1 setting, shifted down. + * + * Get the divisor value for the given tcfg1 setting. We assume the + * caller has already checked to see if this is not a TCLK source. + */ +static inline unsigned long tcfg_to_divisor(unsigned long tcfg1) +{ + return 1 << (1 + tcfg1); +} + +/** + * pwm_tdiv_has_div1() - does the tdiv setting have a /1 + * + * Return true if we have a /1 in the tdiv setting. + */ +static inline unsigned int pwm_tdiv_has_div1(void) +{ + return 0; +} + +/** + * pwm_tdiv_div_bits() - calculate TCFG1 divisor value. + * @div: The divisor to calculate the bit information for. + * + * Turn a divisor into the necessary bit field for TCFG1. + */ +static inline unsigned long pwm_tdiv_div_bits(unsigned int div) +{ + return ilog2(div) - 1; +} + +#define S3C_TCFG1_MUX_TCLK S3C2410_TCFG1_MUX_TCLK diff --git a/arch/arm/plat-s3c24xx/include/plat/audio-simtec.h b/arch/arm/plat-s3c24xx/include/plat/audio-simtec.h new file mode 100644 index 00000000..de5e88fd --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/audio-simtec.h @@ -0,0 +1,37 @@ +/* arch/arm/plat-s3c24xx/include/plat/audio-simtec.h + * + * Copyright 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Simtec Audio support. +*/ + +/** + * struct s3c24xx_audio_simtec_pdata - platform data for simtec audio + * @use_mpllin: Select codec clock from MPLLin + * @output_cdclk: Need to output CDCLK to the codec + * @have_mic: Set if we have a MIC socket + * @have_lout: Set if we have a LineOut socket + * @amp_gpio: GPIO pin to enable the AMP + * @amp_gain: Option GPIO to control AMP gain + */ +struct s3c24xx_audio_simtec_pdata { + unsigned int use_mpllin:1; + unsigned int output_cdclk:1; + + unsigned int have_mic:1; + unsigned int have_lout:1; + + int amp_gpio; + int amp_gain[2]; + + void (*startup)(void); +}; + +extern int simtec_audio_add(const char *codec_name, bool has_lr_routing, + struct s3c24xx_audio_simtec_pdata *pdata); diff --git a/arch/arm/plat-s3c24xx/include/plat/common-smdk.h b/arch/arm/plat-s3c24xx/include/plat/common-smdk.h new file mode 100644 index 00000000..58d9094c --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/common-smdk.h @@ -0,0 +1,15 @@ +/* linux/include/asm-arm/plat-s3c24xx/common-smdk.h + * + * Copyright (c) 2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Common code for SMDK2410 and SMDK2440 boards + * + * http://www.fluff.org/ben/smdk2440/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +extern void smdk_machine_init(void); diff --git a/arch/arm/plat-s3c24xx/include/plat/cpu-freq-core.h b/arch/arm/plat-s3c24xx/include/plat/cpu-freq-core.h new file mode 100644 index 00000000..d623235a --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/cpu-freq-core.h @@ -0,0 +1,287 @@ +/* arch/arm/plat-s3c/include/plat/cpu-freq.h + * + * Copyright (c) 2006-2009 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C CPU frequency scaling support - core support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <plat/cpu-freq.h> + +struct seq_file; + +#define MAX_BANKS (8) +#define S3C2412_MAX_IO (8) + +/** + * struct s3c2410_iobank_timing - IO bank timings for S3C2410 style timings + * @bankcon: The cached version of settings in this structure. + * @tacp: + * @tacs: Time from address valid to nCS asserted. + * @tcos: Time from nCS asserted to nOE or nWE asserted. + * @tacc: Time that nOE or nWE is asserted. + * @tcoh: Time nCS is held after nOE or nWE are released. + * @tcah: Time address is held for after + * @nwait_en: Whether nWAIT is enabled for this bank. + * + * This structure represents the IO timings for a S3C2410 style IO bank + * used by the CPU frequency support if it needs to change the settings + * of the IO. + */ +struct s3c2410_iobank_timing { + unsigned long bankcon; + unsigned int tacp; + unsigned int tacs; + unsigned int tcos; + unsigned int tacc; + unsigned int tcoh; /* nCS hold afrer nOE/nWE */ + unsigned int tcah; /* Address hold after nCS */ + unsigned char nwait_en; /* nWait enabled for bank. */ +}; + +/** + * struct s3c2412_iobank_timing - io timings for PL092 (S3C2412) style IO + * @idcy: The idle cycle time between transactions. + * @wstrd: nCS release to end of read cycle. + * @wstwr: nCS release to end of write cycle. + * @wstoen: nCS assertion to nOE assertion time. + * @wstwen: nCS assertion to nWE assertion time. + * @wstbrd: Burst ready delay. + * @smbidcyr: Register cache for smbidcyr value. + * @smbwstrd: Register cache for smbwstrd value. + * @smbwstwr: Register cache for smbwstwr value. + * @smbwstoen: Register cache for smbwstoen value. + * @smbwstwen: Register cache for smbwstwen value. + * @smbwstbrd: Register cache for smbwstbrd value. + * + * Timing information for a IO bank on an S3C2412 or similar system which + * uses a PL093 block. + */ +struct s3c2412_iobank_timing { + unsigned int idcy; + unsigned int wstrd; + unsigned int wstwr; + unsigned int wstoen; + unsigned int wstwen; + unsigned int wstbrd; + + /* register cache */ + unsigned char smbidcyr; + unsigned char smbwstrd; + unsigned char smbwstwr; + unsigned char smbwstoen; + unsigned char smbwstwen; + unsigned char smbwstbrd; +}; + +union s3c_iobank { + struct s3c2410_iobank_timing *io_2410; + struct s3c2412_iobank_timing *io_2412; +}; + +/** + * struct s3c_iotimings - Chip IO timings holder + * @bank: The timings for each IO bank. + */ +struct s3c_iotimings { + union s3c_iobank bank[MAX_BANKS]; +}; + +/** + * struct s3c_plltab - PLL table information. + * @vals: List of PLL values. + * @size: Size of the PLL table @vals. + */ +struct s3c_plltab { + struct s3c_pllval *vals; + int size; +}; + +/** + * struct s3c_cpufreq_config - current cpu frequency configuration + * @freq: The current settings for the core clocks. + * @max: Maxium settings, derived from core, board and user settings. + * @pll: The PLL table entry for the current PLL settings. + * @divs: The divisor settings for the core clocks. + * @info: The current core driver information. + * @board: The information for the board we are running on. + * @lock_pll: Set if the PLL settings cannot be changed. + * + * This is for the core drivers that need to know information about + * the current settings and values. It should not be needed by any + * device drivers. +*/ +struct s3c_cpufreq_config { + struct s3c_freq freq; + struct s3c_freq max; + struct cpufreq_frequency_table pll; + struct s3c_clkdivs divs; + struct s3c_cpufreq_info *info; /* for core, not drivers */ + struct s3c_cpufreq_board *board; + + unsigned int lock_pll:1; +}; + +/** + * struct s3c_cpufreq_info - Information for the CPU frequency driver. + * @name: The name of this implementation. + * @max: The maximum frequencies for the system. + * @latency: Transition latency to give to cpufreq. + * @locktime_m: The lock-time in uS for the MPLL. + * @locktime_u: The lock-time in uS for the UPLL. + * @locttime_bits: The number of bits each LOCKTIME field. + * @need_pll: Set if this driver needs to change the PLL values to achieve + * any frequency changes. This is really only need by devices like the + * S3C2410 where there is no or limited divider between the PLL and the + * ARMCLK. + * @resume_clocks: Update the clocks on resume. + * @get_iotiming: Get the current IO timing data, mainly for use at start. + * @set_iotiming: Update the IO timings from the cached copies calculated + * from the @calc_iotiming entry when changing the frequency. + * @calc_iotiming: Calculate and update the cached copies of the IO timings + * from the newly calculated frequencies. + * @calc_freqtable: Calculate (fill in) the given frequency table from the + * current frequency configuration. If the table passed in is NULL, + * then the return is the number of elements to be filled for allocation + * of the table. + * @set_refresh: Set the memory refresh configuration. + * @set_fvco: Set the PLL frequencies. + * @set_divs: Update the clock divisors. + * @calc_divs: Calculate the clock divisors. + */ +struct s3c_cpufreq_info { + const char *name; + struct s3c_freq max; + + unsigned int latency; + + unsigned int locktime_m; + unsigned int locktime_u; + unsigned char locktime_bits; + + unsigned int need_pll:1; + + /* driver routines */ + + void (*resume_clocks)(void); + + int (*get_iotiming)(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + + void (*set_iotiming)(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + + int (*calc_iotiming)(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + + int (*calc_freqtable)(struct s3c_cpufreq_config *cfg, + struct cpufreq_frequency_table *t, + size_t table_size); + + void (*debug_io_show)(struct seq_file *seq, + struct s3c_cpufreq_config *cfg, + union s3c_iobank *iob); + + void (*set_refresh)(struct s3c_cpufreq_config *cfg); + void (*set_fvco)(struct s3c_cpufreq_config *cfg); + void (*set_divs)(struct s3c_cpufreq_config *cfg); + int (*calc_divs)(struct s3c_cpufreq_config *cfg); +}; + +extern int s3c_cpufreq_register(struct s3c_cpufreq_info *info); + +extern int s3c_plltab_register(struct cpufreq_frequency_table *plls, unsigned int plls_no); + +/* exports and utilities for debugfs */ +extern struct s3c_cpufreq_config *s3c_cpufreq_getconfig(void); +extern struct s3c_iotimings *s3c_cpufreq_getiotimings(void); + +extern void s3c2410_iotiming_debugfs(struct seq_file *seq, + struct s3c_cpufreq_config *cfg, + union s3c_iobank *iob); + +extern void s3c2412_iotiming_debugfs(struct seq_file *seq, + struct s3c_cpufreq_config *cfg, + union s3c_iobank *iob); + +#ifdef CONFIG_CPU_FREQ_S3C24XX_DEBUGFS +#define s3c_cpufreq_debugfs_call(x) x +#else +#define s3c_cpufreq_debugfs_call(x) NULL +#endif + +/* Useful utility functions. */ + +extern struct clk *s3c_cpufreq_clk_get(struct device *, const char *); + +/* S3C2410 and compatible exported functions */ + +extern void s3c2410_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg); +extern void s3c2410_set_fvco(struct s3c_cpufreq_config *cfg); + +#ifdef CONFIG_S3C2410_IOTIMING +extern int s3c2410_iotiming_calc(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot); + +extern int s3c2410_iotiming_get(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + +extern void s3c2410_iotiming_set(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot); +#else +#define s3c2410_iotiming_calc NULL +#define s3c2410_iotiming_get NULL +#define s3c2410_iotiming_set NULL +#endif /* CONFIG_S3C2410_IOTIMING */ + +/* S3C2412 compatible routines */ + +extern int s3c2412_iotiming_get(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + +extern int s3c2412_iotiming_get(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings); + +extern int s3c2412_iotiming_calc(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot); + +extern void s3c2412_iotiming_set(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot); + +#ifdef CONFIG_CPU_FREQ_S3C24XX_DEBUG +#define s3c_freq_dbg(x...) printk(KERN_INFO x) +#else +#define s3c_freq_dbg(x...) do { if (0) printk(x); } while (0) +#endif /* CONFIG_CPU_FREQ_S3C24XX_DEBUG */ + +#ifdef CONFIG_CPU_FREQ_S3C24XX_IODEBUG +#define s3c_freq_iodbg(x...) printk(KERN_INFO x) +#else +#define s3c_freq_iodbg(x...) do { if (0) printk(x); } while (0) +#endif /* CONFIG_CPU_FREQ_S3C24XX_IODEBUG */ + +static inline int s3c_cpufreq_addfreq(struct cpufreq_frequency_table *table, + int index, size_t table_size, + unsigned int freq) +{ + if (index < 0) + return index; + + if (table) { + if (index >= table_size) + return -ENOMEM; + + s3c_freq_dbg("%s: { %d = %u kHz }\n", + __func__, index, freq); + + table[index].index = index; + table[index].frequency = freq; + } + + return index + 1; +} diff --git a/arch/arm/plat-s3c24xx/include/plat/fiq.h b/arch/arm/plat-s3c24xx/include/plat/fiq.h new file mode 100644 index 00000000..8521b837 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/fiq.h @@ -0,0 +1,13 @@ +/* linux/include/asm-arm/plat-s3c24xx/fiq.h + * + * Copyright (c) 2009 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Header file for S3C24XX CPU FIQ support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +extern int s3c24xx_set_fiq(unsigned int irq, bool on); diff --git a/arch/arm/plat-s3c24xx/include/plat/irq.h b/arch/arm/plat-s3c24xx/include/plat/irq.h new file mode 100644 index 00000000..ec087d60 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/irq.h @@ -0,0 +1,115 @@ +/* linux/include/asm-arm/plat-s3c24xx/irq.h + * + * Copyright (c) 2004-2005 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Header file for S3C24XX CPU IRQ support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/io.h> + +#include <mach/hardware.h> +#include <mach/regs-irq.h> +#include <mach/regs-gpio.h> + +#define irqdbf(x...) +#define irqdbf2(x...) + +#define EXTINT_OFF (IRQ_EINT4 - 4) + +/* these are exported for arch/arm/mach-* usage */ +extern struct irq_chip s3c_irq_level_chip; +extern struct irq_chip s3c_irq_chip; + +static inline void +s3c_irqsub_mask(unsigned int irqno, unsigned int parentbit, + int subcheck) +{ + unsigned long mask; + unsigned long submask; + + submask = __raw_readl(S3C2410_INTSUBMSK); + mask = __raw_readl(S3C2410_INTMSK); + + submask |= (1UL << (irqno - IRQ_S3CUART_RX0)); + + /* check to see if we need to mask the parent IRQ */ + + if ((submask & subcheck) == subcheck) { + __raw_writel(mask | parentbit, S3C2410_INTMSK); + } + + /* write back masks */ + __raw_writel(submask, S3C2410_INTSUBMSK); + +} + +static inline void +s3c_irqsub_unmask(unsigned int irqno, unsigned int parentbit) +{ + unsigned long mask; + unsigned long submask; + + submask = __raw_readl(S3C2410_INTSUBMSK); + mask = __raw_readl(S3C2410_INTMSK); + + submask &= ~(1UL << (irqno - IRQ_S3CUART_RX0)); + mask &= ~parentbit; + + /* write back masks */ + __raw_writel(submask, S3C2410_INTSUBMSK); + __raw_writel(mask, S3C2410_INTMSK); +} + + +static inline void +s3c_irqsub_maskack(unsigned int irqno, unsigned int parentmask, unsigned int group) +{ + unsigned int bit = 1UL << (irqno - IRQ_S3CUART_RX0); + + s3c_irqsub_mask(irqno, parentmask, group); + + __raw_writel(bit, S3C2410_SUBSRCPND); + + /* only ack parent if we've got all the irqs (seems we must + * ack, all and hope that the irq system retriggers ok when + * the interrupt goes off again) + */ + + if (1) { + __raw_writel(parentmask, S3C2410_SRCPND); + __raw_writel(parentmask, S3C2410_INTPND); + } +} + +static inline void +s3c_irqsub_ack(unsigned int irqno, unsigned int parentmask, unsigned int group) +{ + unsigned int bit = 1UL << (irqno - IRQ_S3CUART_RX0); + + __raw_writel(bit, S3C2410_SUBSRCPND); + + /* only ack parent if we've got all the irqs (seems we must + * ack, all and hope that the irq system retriggers ok when + * the interrupt goes off again) + */ + + if (1) { + __raw_writel(parentmask, S3C2410_SRCPND); + __raw_writel(parentmask, S3C2410_INTPND); + } +} + +/* exported for use in arch/arm/mach-s3c2410 */ + +#ifdef CONFIG_PM +extern int s3c_irq_wake(struct irq_data *data, unsigned int state); +#else +#define s3c_irq_wake NULL +#endif + +extern int s3c_irqext_type(struct irq_data *d, unsigned int type); diff --git a/arch/arm/plat-s3c24xx/include/plat/map.h b/arch/arm/plat-s3c24xx/include/plat/map.h new file mode 100644 index 00000000..bd534d32 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/map.h @@ -0,0 +1,100 @@ +/* linux/include/asm-arm/plat-s3c24xx/map.h + * + * Copyright (c) 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX - Memory map definitions + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#ifndef __ASM_PLAT_S3C24XX_MAP_H +#define __ASM_PLAT_S3C24XX_MAP_H + +/* interrupt controller is the first thing we put in, to make + * the assembly code for the irq detection easier + */ +#define S3C24XX_VA_IRQ S3C_VA_IRQ +#define S3C2410_PA_IRQ (0x4A000000) +#define S3C24XX_SZ_IRQ SZ_1M + +/* memory controller registers */ +#define S3C24XX_VA_MEMCTRL S3C_VA_MEM +#define S3C2410_PA_MEMCTRL (0x48000000) +#define S3C24XX_SZ_MEMCTRL SZ_1M + +/* UARTs */ +#define S3C24XX_VA_UART S3C_VA_UART +#define S3C2410_PA_UART (0x50000000) +#define S3C24XX_SZ_UART SZ_1M +#define S3C_UART_OFFSET (0x4000) + +#define S3C_VA_UARTx(uart) (S3C_VA_UART + ((uart * S3C_UART_OFFSET))) + +/* Timers */ +#define S3C24XX_VA_TIMER S3C_VA_TIMER +#define S3C2410_PA_TIMER (0x51000000) +#define S3C24XX_SZ_TIMER SZ_1M + +/* Clock and Power management */ +#define S3C24XX_VA_CLKPWR S3C_VA_SYS +#define S3C24XX_SZ_CLKPWR SZ_1M + +/* USB Device port */ +#define S3C2410_PA_USBDEV (0x52000000) +#define S3C24XX_SZ_USBDEV SZ_1M + +/* Watchdog */ +#define S3C24XX_VA_WATCHDOG S3C_VA_WATCHDOG +#define S3C2410_PA_WATCHDOG (0x53000000) +#define S3C24XX_SZ_WATCHDOG SZ_1M + +/* Standard size definitions for peripheral blocks. */ + +#define S3C24XX_SZ_IIS SZ_1M +#define S3C24XX_SZ_ADC SZ_1M +#define S3C24XX_SZ_SPI SZ_1M +#define S3C24XX_SZ_SDI SZ_1M +#define S3C24XX_SZ_NAND SZ_1M + +/* GPIO ports */ + +/* the calculation for the VA of this must ensure that + * it is the same distance apart from the UART in the + * phsyical address space, as the initial mapping for the IO + * is done as a 1:1 mapping. This puts it (currently) at + * 0xFA800000, which is not in the way of any current mapping + * by the base system. +*/ + +#define S3C2410_PA_GPIO (0x56000000) +#define S3C24XX_VA_GPIO ((S3C24XX_PA_GPIO - S3C24XX_PA_UART) + S3C24XX_VA_UART) +#define S3C24XX_SZ_GPIO SZ_1M + + +/* ISA style IO, for each machine to sort out mappings for, if it + * implements it. We reserve two 16M regions for ISA. + */ + +#define S3C24XX_VA_ISA_WORD S3C2410_ADDR(0x02000000) +#define S3C24XX_VA_ISA_BYTE S3C2410_ADDR(0x03000000) + +/* deal with the registers that move under the 2412/2413 */ + +#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413) +#ifndef __ASSEMBLY__ +extern void __iomem *s3c24xx_va_gpio2; +#endif +#ifdef CONFIG_CPU_S3C2412_ONLY +#define S3C24XX_VA_GPIO2 (S3C24XX_VA_GPIO + 0x10) +#else +#define S3C24XX_VA_GPIO2 s3c24xx_va_gpio2 +#endif +#else +#define s3c24xx_va_gpio2 S3C24XX_VA_GPIO +#define S3C24XX_VA_GPIO2 S3C24XX_VA_GPIO +#endif + +#endif /* __ASM_PLAT_S3C24XX_MAP_H */ diff --git a/arch/arm/plat-s3c24xx/include/plat/mci.h b/arch/arm/plat-s3c24xx/include/plat/mci.h new file mode 100644 index 00000000..2ac2b21e --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/mci.h @@ -0,0 +1,52 @@ +#ifndef _ARCH_MCI_H +#define _ARCH_MCI_H + +/** + * struct s3c24xx_mci_pdata - sd/mmc controller platform data + * @no_wprotect: Set this to indicate there is no write-protect switch. + * @no_detect: Set this if there is no detect switch. + * @wprotect_invert: Invert the default sense of the write protect switch. + * @detect_invert: Invert the default sense of the write protect switch. + * @use_dma: Set to allow the use of DMA. + * @gpio_detect: GPIO number for the card detect line. + * @gpio_wprotect: GPIO number for the write protect line. + * @ocr_avail: The mask of the available power states, non-zero to use. + * @set_power: Callback to control the power mode. + * + * The @gpio_detect is used for card detection when @no_wprotect is unset, + * and the default sense is that 0 returned from gpio_get_value() means + * that a card is inserted. If @detect_invert is set, then the value from + * gpio_get_value() is inverted, which makes 1 mean card inserted. + * + * The driver will use @gpio_wprotect to signal whether the card is write + * protected if @no_wprotect is not set. A 0 returned from gpio_get_value() + * means the card is read/write, and 1 means read-only. The @wprotect_invert + * will invert the value returned from gpio_get_value(). + * + * Card power is set by @ocr_availa, using MCC_VDD_ constants if it is set + * to a non-zero value, otherwise the default of 3.2-3.4V is used. + */ +struct s3c24xx_mci_pdata { + unsigned int no_wprotect : 1; + unsigned int no_detect : 1; + unsigned int wprotect_invert : 1; + unsigned int detect_invert : 1; /* set => detect active high. */ + unsigned int use_dma : 1; + + unsigned int gpio_detect; + unsigned int gpio_wprotect; + unsigned long ocr_avail; + void (*set_power)(unsigned char power_mode, + unsigned short vdd); +}; + +/** + * s3c24xx_mci_set_platdata - set platform data for mmc/sdi device + * @pdata: The platform data + * + * Copy the platform data supplied by @pdata so that this can be marked + * __initdata. + */ +extern void s3c24xx_mci_set_platdata(struct s3c24xx_mci_pdata *pdata); + +#endif /* _ARCH_NCI_H */ diff --git a/arch/arm/plat-s3c24xx/include/plat/pll.h b/arch/arm/plat-s3c24xx/include/plat/pll.h new file mode 100644 index 00000000..005729a1 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/pll.h @@ -0,0 +1,62 @@ +/* linux/arch/arm/plat-s3c24xx/include/plat/pll.h + * + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * S3C24xx - common pll registers and code + */ + +#define S3C24XX_PLLCON_MDIVSHIFT 12 +#define S3C24XX_PLLCON_PDIVSHIFT 4 +#define S3C24XX_PLLCON_SDIVSHIFT 0 +#define S3C24XX_PLLCON_MDIVMASK ((1<<(1+(19-12)))-1) +#define S3C24XX_PLLCON_PDIVMASK ((1<<5)-1) +#define S3C24XX_PLLCON_SDIVMASK 3 + +#include <asm/div64.h> + +static inline unsigned int +s3c24xx_get_pll(unsigned int pllval, unsigned int baseclk) +{ + unsigned int mdiv, pdiv, sdiv; + uint64_t fvco; + + mdiv = pllval >> S3C24XX_PLLCON_MDIVSHIFT; + pdiv = pllval >> S3C24XX_PLLCON_PDIVSHIFT; + sdiv = pllval >> S3C24XX_PLLCON_SDIVSHIFT; + + mdiv &= S3C24XX_PLLCON_MDIVMASK; + pdiv &= S3C24XX_PLLCON_PDIVMASK; + sdiv &= S3C24XX_PLLCON_SDIVMASK; + + fvco = (uint64_t)baseclk * (mdiv + 8); + do_div(fvco, (pdiv + 2) << sdiv); + + return (unsigned int)fvco; +} + +#define S3C2416_PLL_M_SHIFT (14) +#define S3C2416_PLL_P_SHIFT (5) +#define S3C2416_PLL_S_MASK (7) +#define S3C2416_PLL_M_MASK ((1 << 10) - 1) +#define S3C2416_PLL_P_MASK (63) + +static inline unsigned int +s3c2416_get_pll(unsigned int pllval, unsigned int baseclk) +{ + unsigned int m, p, s; + uint64_t fvco; + + m = pllval >> S3C2416_PLL_M_SHIFT; + p = pllval >> S3C2416_PLL_P_SHIFT; + + s = pllval & S3C2416_PLL_S_MASK; + m &= S3C2416_PLL_M_MASK; + p &= S3C2416_PLL_P_MASK; + + fvco = (uint64_t)baseclk * m; + do_div(fvco, (p << s)); + + return (unsigned int)fvco; +} diff --git a/arch/arm/plat-s3c24xx/include/plat/regs-dma.h b/arch/arm/plat-s3c24xx/include/plat/regs-dma.h new file mode 100644 index 00000000..1b0f4c36 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/regs-dma.h @@ -0,0 +1,145 @@ +/* arch/arm/mach-s3c2410/include/mach/dma.h + * + * Copyright (C) 2003-2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Samsung S3C24XX DMA support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +/* DMA Register definitions */ + +#define S3C2410_DMA_DISRC (0x00) +#define S3C2410_DMA_DISRCC (0x04) +#define S3C2410_DMA_DIDST (0x08) +#define S3C2410_DMA_DIDSTC (0x0C) +#define S3C2410_DMA_DCON (0x10) +#define S3C2410_DMA_DSTAT (0x14) +#define S3C2410_DMA_DCSRC (0x18) +#define S3C2410_DMA_DCDST (0x1C) +#define S3C2410_DMA_DMASKTRIG (0x20) +#define S3C2412_DMA_DMAREQSEL (0x24) +#define S3C2443_DMA_DMAREQSEL (0x24) + +#define S3C2410_DISRCC_INC (1<<0) +#define S3C2410_DISRCC_APB (1<<1) + +#define S3C2410_DMASKTRIG_STOP (1<<2) +#define S3C2410_DMASKTRIG_ON (1<<1) +#define S3C2410_DMASKTRIG_SWTRIG (1<<0) + +#define S3C2410_DCON_DEMAND (0<<31) +#define S3C2410_DCON_HANDSHAKE (1<<31) +#define S3C2410_DCON_SYNC_PCLK (0<<30) +#define S3C2410_DCON_SYNC_HCLK (1<<30) + +#define S3C2410_DCON_INTREQ (1<<29) + +#define S3C2410_DCON_CH0_XDREQ0 (0<<24) +#define S3C2410_DCON_CH0_UART0 (1<<24) +#define S3C2410_DCON_CH0_SDI (2<<24) +#define S3C2410_DCON_CH0_TIMER (3<<24) +#define S3C2410_DCON_CH0_USBEP1 (4<<24) + +#define S3C2410_DCON_CH1_XDREQ1 (0<<24) +#define S3C2410_DCON_CH1_UART1 (1<<24) +#define S3C2410_DCON_CH1_I2SSDI (2<<24) +#define S3C2410_DCON_CH1_SPI (3<<24) +#define S3C2410_DCON_CH1_USBEP2 (4<<24) + +#define S3C2410_DCON_CH2_I2SSDO (0<<24) +#define S3C2410_DCON_CH2_I2SSDI (1<<24) +#define S3C2410_DCON_CH2_SDI (2<<24) +#define S3C2410_DCON_CH2_TIMER (3<<24) +#define S3C2410_DCON_CH2_USBEP3 (4<<24) + +#define S3C2410_DCON_CH3_UART2 (0<<24) +#define S3C2410_DCON_CH3_SDI (1<<24) +#define S3C2410_DCON_CH3_SPI (2<<24) +#define S3C2410_DCON_CH3_TIMER (3<<24) +#define S3C2410_DCON_CH3_USBEP4 (4<<24) + +#define S3C2410_DCON_SRCSHIFT (24) +#define S3C2410_DCON_SRCMASK (7<<24) + +#define S3C2410_DCON_BYTE (0<<20) +#define S3C2410_DCON_HALFWORD (1<<20) +#define S3C2410_DCON_WORD (2<<20) + +#define S3C2410_DCON_AUTORELOAD (0<<22) +#define S3C2410_DCON_NORELOAD (1<<22) +#define S3C2410_DCON_HWTRIG (1<<23) + +#ifdef CONFIG_CPU_S3C2440 +#define S3C2440_DIDSTC_CHKINT (1<<2) + +#define S3C2440_DCON_CH0_I2SSDO (5<<24) +#define S3C2440_DCON_CH0_PCMIN (6<<24) + +#define S3C2440_DCON_CH1_PCMOUT (5<<24) +#define S3C2440_DCON_CH1_SDI (6<<24) + +#define S3C2440_DCON_CH2_PCMIN (5<<24) +#define S3C2440_DCON_CH2_MICIN (6<<24) + +#define S3C2440_DCON_CH3_MICIN (5<<24) +#define S3C2440_DCON_CH3_PCMOUT (6<<24) +#endif + +#ifdef CONFIG_CPU_S3C2412 + +#define S3C2412_DMAREQSEL_SRC(x) ((x)<<1) + +#define S3C2412_DMAREQSEL_HW (1) + +#define S3C2412_DMAREQSEL_SPI0TX S3C2412_DMAREQSEL_SRC(0) +#define S3C2412_DMAREQSEL_SPI0RX S3C2412_DMAREQSEL_SRC(1) +#define S3C2412_DMAREQSEL_SPI1TX S3C2412_DMAREQSEL_SRC(2) +#define S3C2412_DMAREQSEL_SPI1RX S3C2412_DMAREQSEL_SRC(3) +#define S3C2412_DMAREQSEL_I2STX S3C2412_DMAREQSEL_SRC(4) +#define S3C2412_DMAREQSEL_I2SRX S3C2412_DMAREQSEL_SRC(5) +#define S3C2412_DMAREQSEL_TIMER S3C2412_DMAREQSEL_SRC(9) +#define S3C2412_DMAREQSEL_SDI S3C2412_DMAREQSEL_SRC(10) +#define S3C2412_DMAREQSEL_USBEP1 S3C2412_DMAREQSEL_SRC(13) +#define S3C2412_DMAREQSEL_USBEP2 S3C2412_DMAREQSEL_SRC(14) +#define S3C2412_DMAREQSEL_USBEP3 S3C2412_DMAREQSEL_SRC(15) +#define S3C2412_DMAREQSEL_USBEP4 S3C2412_DMAREQSEL_SRC(16) +#define S3C2412_DMAREQSEL_XDREQ0 S3C2412_DMAREQSEL_SRC(17) +#define S3C2412_DMAREQSEL_XDREQ1 S3C2412_DMAREQSEL_SRC(18) +#define S3C2412_DMAREQSEL_UART0_0 S3C2412_DMAREQSEL_SRC(19) +#define S3C2412_DMAREQSEL_UART0_1 S3C2412_DMAREQSEL_SRC(20) +#define S3C2412_DMAREQSEL_UART1_0 S3C2412_DMAREQSEL_SRC(21) +#define S3C2412_DMAREQSEL_UART1_1 S3C2412_DMAREQSEL_SRC(22) +#define S3C2412_DMAREQSEL_UART2_0 S3C2412_DMAREQSEL_SRC(23) +#define S3C2412_DMAREQSEL_UART2_1 S3C2412_DMAREQSEL_SRC(24) + +#endif + +#define S3C2443_DMAREQSEL_SRC(x) ((x)<<1) + +#define S3C2443_DMAREQSEL_HW (1) + +#define S3C2443_DMAREQSEL_SPI0TX S3C2443_DMAREQSEL_SRC(0) +#define S3C2443_DMAREQSEL_SPI0RX S3C2443_DMAREQSEL_SRC(1) +#define S3C2443_DMAREQSEL_SPI1TX S3C2443_DMAREQSEL_SRC(2) +#define S3C2443_DMAREQSEL_SPI1RX S3C2443_DMAREQSEL_SRC(3) +#define S3C2443_DMAREQSEL_I2STX S3C2443_DMAREQSEL_SRC(4) +#define S3C2443_DMAREQSEL_I2SRX S3C2443_DMAREQSEL_SRC(5) +#define S3C2443_DMAREQSEL_TIMER S3C2443_DMAREQSEL_SRC(9) +#define S3C2443_DMAREQSEL_SDI S3C2443_DMAREQSEL_SRC(10) +#define S3C2443_DMAREQSEL_XDREQ0 S3C2443_DMAREQSEL_SRC(17) +#define S3C2443_DMAREQSEL_XDREQ1 S3C2443_DMAREQSEL_SRC(18) +#define S3C2443_DMAREQSEL_UART0_0 S3C2443_DMAREQSEL_SRC(19) +#define S3C2443_DMAREQSEL_UART0_1 S3C2443_DMAREQSEL_SRC(20) +#define S3C2443_DMAREQSEL_UART1_0 S3C2443_DMAREQSEL_SRC(21) +#define S3C2443_DMAREQSEL_UART1_1 S3C2443_DMAREQSEL_SRC(22) +#define S3C2443_DMAREQSEL_UART2_0 S3C2443_DMAREQSEL_SRC(23) +#define S3C2443_DMAREQSEL_UART2_1 S3C2443_DMAREQSEL_SRC(24) +#define S3C2443_DMAREQSEL_UART3_0 S3C2443_DMAREQSEL_SRC(25) +#define S3C2443_DMAREQSEL_UART3_1 S3C2443_DMAREQSEL_SRC(26) +#define S3C2443_DMAREQSEL_PCMOUT S3C2443_DMAREQSEL_SRC(27) +#define S3C2443_DMAREQSEL_PCMIN S3C2443_DMAREQSEL_SRC(28) +#define S3C2443_DMAREQSEL_MICIN S3C2443_DMAREQSEL_SRC(29) diff --git a/arch/arm/plat-s3c24xx/include/plat/regs-iis.h b/arch/arm/plat-s3c24xx/include/plat/regs-iis.h new file mode 100644 index 00000000..a6f1d5df --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/regs-iis.h @@ -0,0 +1,77 @@ +/* arch/arm/mach-s3c2410/include/mach/regs-iis.h + * + * Copyright (c) 2003 Simtec Electronics <linux@simtec.co.uk> + * http://www.simtec.co.uk/products/SWLINUX/ + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * S3C2410 IIS register definition +*/ + +#ifndef __ASM_ARCH_REGS_IIS_H +#define __ASM_ARCH_REGS_IIS_H + +#define S3C2410_IISCON (0x00) + +#define S3C2410_IISCON_LRINDEX (1<<8) +#define S3C2410_IISCON_TXFIFORDY (1<<7) +#define S3C2410_IISCON_RXFIFORDY (1<<6) +#define S3C2410_IISCON_TXDMAEN (1<<5) +#define S3C2410_IISCON_RXDMAEN (1<<4) +#define S3C2410_IISCON_TXIDLE (1<<3) +#define S3C2410_IISCON_RXIDLE (1<<2) +#define S3C2410_IISCON_PSCEN (1<<1) +#define S3C2410_IISCON_IISEN (1<<0) + +#define S3C2410_IISMOD (0x04) + +#define S3C2440_IISMOD_MPLL (1<<9) +#define S3C2410_IISMOD_SLAVE (1<<8) +#define S3C2410_IISMOD_NOXFER (0<<6) +#define S3C2410_IISMOD_RXMODE (1<<6) +#define S3C2410_IISMOD_TXMODE (2<<6) +#define S3C2410_IISMOD_TXRXMODE (3<<6) +#define S3C2410_IISMOD_LR_LLOW (0<<5) +#define S3C2410_IISMOD_LR_RLOW (1<<5) +#define S3C2410_IISMOD_IIS (0<<4) +#define S3C2410_IISMOD_MSB (1<<4) +#define S3C2410_IISMOD_8BIT (0<<3) +#define S3C2410_IISMOD_16BIT (1<<3) +#define S3C2410_IISMOD_BITMASK (1<<3) +#define S3C2410_IISMOD_256FS (0<<2) +#define S3C2410_IISMOD_384FS (1<<2) +#define S3C2410_IISMOD_16FS (0<<0) +#define S3C2410_IISMOD_32FS (1<<0) +#define S3C2410_IISMOD_48FS (2<<0) +#define S3C2410_IISMOD_FS_MASK (3<<0) + +#define S3C2410_IISPSR (0x08) +#define S3C2410_IISPSR_INTMASK (31<<5) +#define S3C2410_IISPSR_INTSHIFT (5) +#define S3C2410_IISPSR_EXTMASK (31<<0) +#define S3C2410_IISPSR_EXTSHFIT (0) + +#define S3C2410_IISFCON (0x0c) + +#define S3C2410_IISFCON_TXDMA (1<<15) +#define S3C2410_IISFCON_RXDMA (1<<14) +#define S3C2410_IISFCON_TXENABLE (1<<13) +#define S3C2410_IISFCON_RXENABLE (1<<12) +#define S3C2410_IISFCON_TXMASK (0x3f << 6) +#define S3C2410_IISFCON_TXSHIFT (6) +#define S3C2410_IISFCON_RXMASK (0x3f) +#define S3C2410_IISFCON_RXSHIFT (0) + +#define S3C2400_IISFCON_TXDMA (1<<11) +#define S3C2400_IISFCON_RXDMA (1<<10) +#define S3C2400_IISFCON_TXENABLE (1<<9) +#define S3C2400_IISFCON_RXENABLE (1<<8) +#define S3C2400_IISFCON_TXMASK (0x07 << 4) +#define S3C2400_IISFCON_TXSHIFT (4) +#define S3C2400_IISFCON_RXMASK (0x07) +#define S3C2400_IISFCON_RXSHIFT (0) + +#define S3C2410_IISFIFO (0x10) +#endif /* __ASM_ARCH_REGS_IIS_H */ diff --git a/arch/arm/plat-s3c24xx/include/plat/regs-spi.h b/arch/arm/plat-s3c24xx/include/plat/regs-spi.h new file mode 100644 index 00000000..2b35479e --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/regs-spi.h @@ -0,0 +1,82 @@ +/* arch/arm/mach-s3c2410/include/mach/regs-spi.h + * + * Copyright (c) 2004 Fetron GmbH + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * S3C2410 SPI register definition +*/ + +#ifndef __ASM_ARCH_REGS_SPI_H +#define __ASM_ARCH_REGS_SPI_H + +#define S3C2410_SPI1 (0x20) +#define S3C2412_SPI1 (0x100) + +#define S3C2410_SPCON (0x00) + +#define S3C2412_SPCON_RXFIFO_RB2 (0<<14) +#define S3C2412_SPCON_RXFIFO_RB4 (1<<14) +#define S3C2412_SPCON_RXFIFO_RB12 (2<<14) +#define S3C2412_SPCON_RXFIFO_RB14 (3<<14) +#define S3C2412_SPCON_TXFIFO_RB2 (0<<12) +#define S3C2412_SPCON_TXFIFO_RB4 (1<<12) +#define S3C2412_SPCON_TXFIFO_RB12 (2<<12) +#define S3C2412_SPCON_TXFIFO_RB14 (3<<12) +#define S3C2412_SPCON_RXFIFO_RESET (1<<11) /* RxFIFO reset */ +#define S3C2412_SPCON_TXFIFO_RESET (1<<10) /* TxFIFO reset */ +#define S3C2412_SPCON_RXFIFO_EN (1<<9) /* RxFIFO Enable */ +#define S3C2412_SPCON_TXFIFO_EN (1<<8) /* TxFIFO Enable */ + +#define S3C2412_SPCON_DIRC_RX (1<<7) + +#define S3C2410_SPCON_SMOD_DMA (2<<5) /* DMA mode */ +#define S3C2410_SPCON_SMOD_INT (1<<5) /* interrupt mode */ +#define S3C2410_SPCON_SMOD_POLL (0<<5) /* polling mode */ +#define S3C2410_SPCON_ENSCK (1<<4) /* Enable SCK */ +#define S3C2410_SPCON_MSTR (1<<3) /* Master/Slave select + 0: slave, 1: master */ +#define S3C2410_SPCON_CPOL_HIGH (1<<2) /* Clock polarity select */ +#define S3C2410_SPCON_CPOL_LOW (0<<2) /* Clock polarity select */ + +#define S3C2410_SPCON_CPHA_FMTB (1<<1) /* Clock Phase Select */ +#define S3C2410_SPCON_CPHA_FMTA (0<<1) /* Clock Phase Select */ + +#define S3C2410_SPCON_TAGD (1<<0) /* Tx auto garbage data mode */ + + +#define S3C2410_SPSTA (0x04) + +#define S3C2412_SPSTA_RXFIFO_AE (1<<11) +#define S3C2412_SPSTA_TXFIFO_AE (1<<10) +#define S3C2412_SPSTA_RXFIFO_ERROR (1<<9) +#define S3C2412_SPSTA_TXFIFO_ERROR (1<<8) +#define S3C2412_SPSTA_RXFIFO_FIFO (1<<7) +#define S3C2412_SPSTA_RXFIFO_EMPTY (1<<6) +#define S3C2412_SPSTA_TXFIFO_NFULL (1<<5) +#define S3C2412_SPSTA_TXFIFO_EMPTY (1<<4) + +#define S3C2410_SPSTA_DCOL (1<<2) /* Data Collision Error */ +#define S3C2410_SPSTA_MULD (1<<1) /* Multi Master Error */ +#define S3C2410_SPSTA_READY (1<<0) /* Data Tx/Rx ready */ +#define S3C2412_SPSTA_READY_ORG (1<<3) + +#define S3C2410_SPPIN (0x08) + +#define S3C2410_SPPIN_ENMUL (1<<2) /* Multi Master Error detect */ +#define S3C2410_SPPIN_RESERVED (1<<1) +#define S3C2400_SPPIN_nCS (1<<1) /* SPI Card Select */ +#define S3C2410_SPPIN_KEEP (1<<0) /* Master Out keep */ + +#define S3C2410_SPPRE (0x0C) +#define S3C2410_SPTDAT (0x10) +#define S3C2410_SPRDAT (0x14) + +#define S3C2412_TXFIFO (0x18) +#define S3C2412_RXFIFO (0x18) +#define S3C2412_SPFIC (0x24) + + +#endif /* __ASM_ARCH_REGS_SPI_H */ diff --git a/arch/arm/plat-s3c24xx/include/plat/regs-udc.h b/arch/arm/plat-s3c24xx/include/plat/regs-udc.h new file mode 100644 index 00000000..f0dd4a41 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/regs-udc.h @@ -0,0 +1,153 @@ +/* arch/arm/mach-s3c2410/include/mach/regs-udc.h + * + * Copyright (C) 2004 Herbert Poetzl <herbert@13thfloor.at> + * + * This include file is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. +*/ + +#ifndef __ASM_ARCH_REGS_UDC_H +#define __ASM_ARCH_REGS_UDC_H + +#define S3C2410_USBDREG(x) (x) + +#define S3C2410_UDC_FUNC_ADDR_REG S3C2410_USBDREG(0x0140) +#define S3C2410_UDC_PWR_REG S3C2410_USBDREG(0x0144) +#define S3C2410_UDC_EP_INT_REG S3C2410_USBDREG(0x0148) + +#define S3C2410_UDC_USB_INT_REG S3C2410_USBDREG(0x0158) +#define S3C2410_UDC_EP_INT_EN_REG S3C2410_USBDREG(0x015c) + +#define S3C2410_UDC_USB_INT_EN_REG S3C2410_USBDREG(0x016c) + +#define S3C2410_UDC_FRAME_NUM1_REG S3C2410_USBDREG(0x0170) +#define S3C2410_UDC_FRAME_NUM2_REG S3C2410_USBDREG(0x0174) + +#define S3C2410_UDC_EP0_FIFO_REG S3C2410_USBDREG(0x01c0) +#define S3C2410_UDC_EP1_FIFO_REG S3C2410_USBDREG(0x01c4) +#define S3C2410_UDC_EP2_FIFO_REG S3C2410_USBDREG(0x01c8) +#define S3C2410_UDC_EP3_FIFO_REG S3C2410_USBDREG(0x01cc) +#define S3C2410_UDC_EP4_FIFO_REG S3C2410_USBDREG(0x01d0) + +#define S3C2410_UDC_EP1_DMA_CON S3C2410_USBDREG(0x0200) +#define S3C2410_UDC_EP1_DMA_UNIT S3C2410_USBDREG(0x0204) +#define S3C2410_UDC_EP1_DMA_FIFO S3C2410_USBDREG(0x0208) +#define S3C2410_UDC_EP1_DMA_TTC_L S3C2410_USBDREG(0x020c) +#define S3C2410_UDC_EP1_DMA_TTC_M S3C2410_USBDREG(0x0210) +#define S3C2410_UDC_EP1_DMA_TTC_H S3C2410_USBDREG(0x0214) + +#define S3C2410_UDC_EP2_DMA_CON S3C2410_USBDREG(0x0218) +#define S3C2410_UDC_EP2_DMA_UNIT S3C2410_USBDREG(0x021c) +#define S3C2410_UDC_EP2_DMA_FIFO S3C2410_USBDREG(0x0220) +#define S3C2410_UDC_EP2_DMA_TTC_L S3C2410_USBDREG(0x0224) +#define S3C2410_UDC_EP2_DMA_TTC_M S3C2410_USBDREG(0x0228) +#define S3C2410_UDC_EP2_DMA_TTC_H S3C2410_USBDREG(0x022c) + +#define S3C2410_UDC_EP3_DMA_CON S3C2410_USBDREG(0x0240) +#define S3C2410_UDC_EP3_DMA_UNIT S3C2410_USBDREG(0x0244) +#define S3C2410_UDC_EP3_DMA_FIFO S3C2410_USBDREG(0x0248) +#define S3C2410_UDC_EP3_DMA_TTC_L S3C2410_USBDREG(0x024c) +#define S3C2410_UDC_EP3_DMA_TTC_M S3C2410_USBDREG(0x0250) +#define S3C2410_UDC_EP3_DMA_TTC_H S3C2410_USBDREG(0x0254) + +#define S3C2410_UDC_EP4_DMA_CON S3C2410_USBDREG(0x0258) +#define S3C2410_UDC_EP4_DMA_UNIT S3C2410_USBDREG(0x025c) +#define S3C2410_UDC_EP4_DMA_FIFO S3C2410_USBDREG(0x0260) +#define S3C2410_UDC_EP4_DMA_TTC_L S3C2410_USBDREG(0x0264) +#define S3C2410_UDC_EP4_DMA_TTC_M S3C2410_USBDREG(0x0268) +#define S3C2410_UDC_EP4_DMA_TTC_H S3C2410_USBDREG(0x026c) + +#define S3C2410_UDC_INDEX_REG S3C2410_USBDREG(0x0178) + +/* indexed registers */ + +#define S3C2410_UDC_MAXP_REG S3C2410_USBDREG(0x0180) + +#define S3C2410_UDC_EP0_CSR_REG S3C2410_USBDREG(0x0184) + +#define S3C2410_UDC_IN_CSR1_REG S3C2410_USBDREG(0x0184) +#define S3C2410_UDC_IN_CSR2_REG S3C2410_USBDREG(0x0188) + +#define S3C2410_UDC_OUT_CSR1_REG S3C2410_USBDREG(0x0190) +#define S3C2410_UDC_OUT_CSR2_REG S3C2410_USBDREG(0x0194) +#define S3C2410_UDC_OUT_FIFO_CNT1_REG S3C2410_USBDREG(0x0198) +#define S3C2410_UDC_OUT_FIFO_CNT2_REG S3C2410_USBDREG(0x019c) + +#define S3C2410_UDC_FUNCADDR_UPDATE (1<<7) + +#define S3C2410_UDC_PWR_ISOUP (1<<7) // R/W +#define S3C2410_UDC_PWR_RESET (1<<3) // R +#define S3C2410_UDC_PWR_RESUME (1<<2) // R/W +#define S3C2410_UDC_PWR_SUSPEND (1<<1) // R +#define S3C2410_UDC_PWR_ENSUSPEND (1<<0) // R/W + +#define S3C2410_UDC_PWR_DEFAULT 0x00 + +#define S3C2410_UDC_INT_EP4 (1<<4) // R/W (clear only) +#define S3C2410_UDC_INT_EP3 (1<<3) // R/W (clear only) +#define S3C2410_UDC_INT_EP2 (1<<2) // R/W (clear only) +#define S3C2410_UDC_INT_EP1 (1<<1) // R/W (clear only) +#define S3C2410_UDC_INT_EP0 (1<<0) // R/W (clear only) + +#define S3C2410_UDC_USBINT_RESET (1<<2) // R/W (clear only) +#define S3C2410_UDC_USBINT_RESUME (1<<1) // R/W (clear only) +#define S3C2410_UDC_USBINT_SUSPEND (1<<0) // R/W (clear only) + +#define S3C2410_UDC_INTE_EP4 (1<<4) // R/W +#define S3C2410_UDC_INTE_EP3 (1<<3) // R/W +#define S3C2410_UDC_INTE_EP2 (1<<2) // R/W +#define S3C2410_UDC_INTE_EP1 (1<<1) // R/W +#define S3C2410_UDC_INTE_EP0 (1<<0) // R/W + +#define S3C2410_UDC_USBINTE_RESET (1<<2) // R/W +#define S3C2410_UDC_USBINTE_SUSPEND (1<<0) // R/W + + +#define S3C2410_UDC_INDEX_EP0 (0x00) +#define S3C2410_UDC_INDEX_EP1 (0x01) // ?? +#define S3C2410_UDC_INDEX_EP2 (0x02) // ?? +#define S3C2410_UDC_INDEX_EP3 (0x03) // ?? +#define S3C2410_UDC_INDEX_EP4 (0x04) // ?? + +#define S3C2410_UDC_ICSR1_CLRDT (1<<6) // R/W +#define S3C2410_UDC_ICSR1_SENTSTL (1<<5) // R/W (clear only) +#define S3C2410_UDC_ICSR1_SENDSTL (1<<4) // R/W +#define S3C2410_UDC_ICSR1_FFLUSH (1<<3) // W (set only) +#define S3C2410_UDC_ICSR1_UNDRUN (1<<2) // R/W (clear only) +#define S3C2410_UDC_ICSR1_PKTRDY (1<<0) // R/W (set only) + +#define S3C2410_UDC_ICSR2_AUTOSET (1<<7) // R/W +#define S3C2410_UDC_ICSR2_ISO (1<<6) // R/W +#define S3C2410_UDC_ICSR2_MODEIN (1<<5) // R/W +#define S3C2410_UDC_ICSR2_DMAIEN (1<<4) // R/W + +#define S3C2410_UDC_OCSR1_CLRDT (1<<7) // R/W +#define S3C2410_UDC_OCSR1_SENTSTL (1<<6) // R/W (clear only) +#define S3C2410_UDC_OCSR1_SENDSTL (1<<5) // R/W +#define S3C2410_UDC_OCSR1_FFLUSH (1<<4) // R/W +#define S3C2410_UDC_OCSR1_DERROR (1<<3) // R +#define S3C2410_UDC_OCSR1_OVRRUN (1<<2) // R/W (clear only) +#define S3C2410_UDC_OCSR1_PKTRDY (1<<0) // R/W (clear only) + +#define S3C2410_UDC_OCSR2_AUTOCLR (1<<7) // R/W +#define S3C2410_UDC_OCSR2_ISO (1<<6) // R/W +#define S3C2410_UDC_OCSR2_DMAIEN (1<<5) // R/W + +#define S3C2410_UDC_EP0_CSR_OPKRDY (1<<0) +#define S3C2410_UDC_EP0_CSR_IPKRDY (1<<1) +#define S3C2410_UDC_EP0_CSR_SENTSTL (1<<2) +#define S3C2410_UDC_EP0_CSR_DE (1<<3) +#define S3C2410_UDC_EP0_CSR_SE (1<<4) +#define S3C2410_UDC_EP0_CSR_SENDSTL (1<<5) +#define S3C2410_UDC_EP0_CSR_SOPKTRDY (1<<6) +#define S3C2410_UDC_EP0_CSR_SSE (1<<7) + +#define S3C2410_UDC_MAXP_8 (1<<0) +#define S3C2410_UDC_MAXP_16 (1<<1) +#define S3C2410_UDC_MAXP_32 (1<<2) +#define S3C2410_UDC_MAXP_64 (1<<3) + + +#endif diff --git a/arch/arm/plat-s3c24xx/include/plat/s3c2400.h b/arch/arm/plat-s3c24xx/include/plat/s3c2400.h new file mode 100644 index 00000000..b3feaea5 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/s3c2400.h @@ -0,0 +1,31 @@ +/* linux/include/asm-arm/plat-s3c24xx/s3c2400.h + * + * Copyright (c) 2004 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Header file for S3C2400 cpu support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Modifications: + * 09-Fev-2006 LCVR First version, based on s3c2410.h +*/ + +#ifdef CONFIG_CPU_S3C2400 + +extern int s3c2400_init(void); + +extern void s3c2400_map_io(void); + +extern void s3c2400_init_uarts(struct s3c2410_uartcfg *cfg, int no); + +extern void s3c2400_init_clocks(int xtal); + +#else +#define s3c2400_init_clocks NULL +#define s3c2400_init_uarts NULL +#define s3c2400_map_io NULL +#define s3c2400_init NULL +#endif diff --git a/arch/arm/plat-s3c24xx/include/plat/s3c2410.h b/arch/arm/plat-s3c24xx/include/plat/s3c2410.h new file mode 100644 index 00000000..82ab4aad --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/s3c2410.h @@ -0,0 +1,33 @@ +/* linux/include/asm-arm/plat-s3c24xx/s3c2410.h + * + * Copyright (c) 2004 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Header file for s3c2410 machine directory + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * +*/ + +#ifdef CONFIG_CPU_S3C2410 + +extern int s3c2410_init(void); +extern int s3c2410a_init(void); + +extern void s3c2410_map_io(void); + +extern void s3c2410_init_uarts(struct s3c2410_uartcfg *cfg, int no); + +extern void s3c2410_init_clocks(int xtal); + +#else +#define s3c2410_init_clocks NULL +#define s3c2410_init_uarts NULL +#define s3c2410_map_io NULL +#define s3c2410_init NULL +#define s3c2410a_init NULL +#endif + +extern int s3c2410_baseclk_add(void); diff --git a/arch/arm/plat-s3c24xx/include/plat/s3c2412.h b/arch/arm/plat-s3c24xx/include/plat/s3c2412.h new file mode 100644 index 00000000..bb15d3b6 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/s3c2412.h @@ -0,0 +1,29 @@ +/* linux/include/asm-arm/plat-s3c24xx/s3c2412.h + * + * Copyright (c) 2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Header file for s3c2412 cpu support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#ifdef CONFIG_CPU_S3C2412 + +extern int s3c2412_init(void); + +extern void s3c2412_map_io(void); + +extern void s3c2412_init_uarts(struct s3c2410_uartcfg *cfg, int no); + +extern void s3c2412_init_clocks(int xtal); + +extern int s3c2412_baseclk_add(void); +#else +#define s3c2412_init_clocks NULL +#define s3c2412_init_uarts NULL +#define s3c2412_map_io NULL +#define s3c2412_init NULL +#endif diff --git a/arch/arm/plat-s3c24xx/include/plat/s3c2416.h b/arch/arm/plat-s3c24xx/include/plat/s3c2416.h new file mode 100644 index 00000000..dc3c0907 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/s3c2416.h @@ -0,0 +1,31 @@ +/* linux/include/asm-arm/plat-s3c24xx/s3c2443.h + * + * Copyright (c) 2009 Yauhen Kharuzhy <jekhor@gmail.com> + * + * Header file for s3c2416 cpu support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#ifdef CONFIG_CPU_S3C2416 + +struct s3c2410_uartcfg; + +extern int s3c2416_init(void); + +extern void s3c2416_map_io(void); + +extern void s3c2416_init_uarts(struct s3c2410_uartcfg *cfg, int no); + +extern void s3c2416_init_clocks(int xtal); + +extern int s3c2416_baseclk_add(void); + +#else +#define s3c2416_init_clocks NULL +#define s3c2416_init_uarts NULL +#define s3c2416_map_io NULL +#define s3c2416_init NULL +#endif diff --git a/arch/arm/plat-s3c24xx/include/plat/s3c2443.h b/arch/arm/plat-s3c24xx/include/plat/s3c2443.h new file mode 100644 index 00000000..a19715fe --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/s3c2443.h @@ -0,0 +1,51 @@ +/* linux/include/asm-arm/plat-s3c24xx/s3c2443.h + * + * Copyright (c) 2004-2005 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Header file for s3c2443 cpu support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#ifdef CONFIG_CPU_S3C2443 + +struct s3c2410_uartcfg; + +extern int s3c2443_init(void); + +extern void s3c2443_map_io(void); + +extern void s3c2443_init_uarts(struct s3c2410_uartcfg *cfg, int no); + +extern void s3c2443_init_clocks(int xtal); + +extern int s3c2443_baseclk_add(void); + +#else +#define s3c2443_init_clocks NULL +#define s3c2443_init_uarts NULL +#define s3c2443_map_io NULL +#define s3c2443_init NULL +#endif + +/* common code used by s3c2443 and others. + * note, not to be used outside of arch/arm/mach-s3c* */ + +struct clk; /* some files don't need clk.h otherwise */ + +typedef unsigned int (*pll_fn)(unsigned int reg, unsigned int base); +typedef unsigned int (*fdiv_fn)(unsigned long clkcon0); + +extern void s3c2443_common_setup_clocks(pll_fn get_mpll, fdiv_fn fdiv); +extern void s3c2443_common_init_clocks(int xtal, pll_fn get_mpll, fdiv_fn fdiv); + +extern int s3c2443_clkcon_enable_h(struct clk *clk, int enable); +extern int s3c2443_clkcon_enable_p(struct clk *clk, int enable); +extern int s3c2443_clkcon_enable_s(struct clk *clk, int enable); + +extern struct clksrc_clk clk_epllref; +extern struct clksrc_clk clk_esysclk; +extern struct clksrc_clk clk_msysclk; diff --git a/arch/arm/plat-s3c24xx/include/plat/s3c244x.h b/arch/arm/plat-s3c24xx/include/plat/s3c244x.h new file mode 100644 index 00000000..89e8d0a2 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/s3c244x.h @@ -0,0 +1,42 @@ +/* linux/arch/arm/plat-s3c24xx/include/plat/s3c244x.h + * + * Copyright (c) 2004-2005 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * Header file for S3C2440 and S3C2442 cpu support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#if defined(CONFIG_CPU_S3C2440) || defined(CONFIG_CPU_S3C2442) + +extern void s3c244x_map_io(void); + +extern void s3c244x_init_uarts(struct s3c2410_uartcfg *cfg, int no); + +extern void s3c244x_init_clocks(int xtal); + +#else +#define s3c244x_init_clocks NULL +#define s3c244x_init_uarts NULL +#endif + +#ifdef CONFIG_CPU_S3C2440 +extern int s3c2440_init(void); + +extern void s3c2440_map_io(void); +#else +#define s3c2440_init NULL +#define s3c2440_map_io NULL +#endif + +#ifdef CONFIG_CPU_S3C2442 +extern int s3c2442_init(void); + +extern void s3c2442_map_io(void); +#else +#define s3c2442_init NULL +#define s3c2442_map_io NULL +#endif diff --git a/arch/arm/plat-s3c24xx/include/plat/udc.h b/arch/arm/plat-s3c24xx/include/plat/udc.h new file mode 100644 index 00000000..f6388424 --- /dev/null +++ b/arch/arm/plat-s3c24xx/include/plat/udc.h @@ -0,0 +1,57 @@ +/* arch/arm/mach-s3c2410/include/mach/udc.h + * + * Copyright (c) 2005 Arnaud Patard <arnaud.patard@rtp-net.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * + * Changelog: + * 14-Mar-2005 RTP Created file + * 02-Aug-2005 RTP File rename + * 07-Sep-2005 BJD Minor cleanups, changed cmd to enum + * 18-Jan-2007 HMW Add per-platform vbus_draw function +*/ + +#ifndef __ASM_ARM_ARCH_UDC_H +#define __ASM_ARM_ARCH_UDC_H + +enum s3c2410_udc_cmd_e { + S3C2410_UDC_P_ENABLE = 1, /* Pull-up enable */ + S3C2410_UDC_P_DISABLE = 2, /* Pull-up disable */ + S3C2410_UDC_P_RESET = 3, /* UDC reset, in case of */ +}; + +struct s3c2410_udc_mach_info { + void (*udc_command)(enum s3c2410_udc_cmd_e); + void (*vbus_draw)(unsigned int ma); + + unsigned int pullup_pin; + unsigned int pullup_pin_inverted; + + unsigned int vbus_pin; + unsigned char vbus_pin_inverted; +}; + +extern void __init s3c24xx_udc_set_platdata(struct s3c2410_udc_mach_info *); + +/** + * s3c24xx_hsudc_platdata - Platform data for USB High-Speed gadget controller. + * @epnum: Number of endpoints to be instantiated by the controller driver. + * @gpio_init: Platform specific USB related GPIO initialization. + * @gpio_uninit: Platform specific USB releted GPIO uninitialzation. + * + * Representation of platform data for the S3C24XX USB 2.0 High Speed gadget + * controllers. + */ +struct s3c24xx_hsudc_platdata { + unsigned int epnum; + void (*gpio_init)(void); + void (*gpio_uninit)(void); +}; + +extern void __init s3c24xx_hsudc_set_platdata(struct s3c24xx_hsudc_platdata *pd); + +#endif /* __ASM_ARM_ARCH_UDC_H */ diff --git a/arch/arm/plat-s3c24xx/irq-pm.c b/arch/arm/plat-s3c24xx/irq-pm.c new file mode 100644 index 00000000..0efb2e28 --- /dev/null +++ b/arch/arm/plat-s3c24xx/irq-pm.c @@ -0,0 +1,95 @@ +/* linux/arch/arm/plat-s3c24xx/irq-om.c + * + * Copyright (c) 2003-2004 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * http://armlinux.simtec.co.uk/ + * + * S3C24XX - IRQ PM code + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/irq.h> + +#include <plat/cpu.h> +#include <plat/pm.h> +#include <plat/irq.h> + +#include <asm/irq.h> + +/* state for IRQs over sleep */ + +/* default is to allow for EINT0..EINT15, and IRQ_RTC as wakeup sources + * + * set bit to 1 in allow bitfield to enable the wakeup settings on it +*/ + +unsigned long s3c_irqwake_intallow = 1L << (IRQ_RTC - IRQ_EINT0) | 0xfL; +unsigned long s3c_irqwake_eintallow = 0x0000fff0L; + +int s3c_irq_wake(struct irq_data *data, unsigned int state) +{ + unsigned long irqbit = 1 << (data->irq - IRQ_EINT0); + + if (!(s3c_irqwake_intallow & irqbit)) + return -ENOENT; + + printk(KERN_INFO "wake %s for irq %d\n", + state ? "enabled" : "disabled", data->irq); + + if (!state) + s3c_irqwake_intmask |= irqbit; + else + s3c_irqwake_intmask &= ~irqbit; + + return 0; +} + +static struct sleep_save irq_save[] = { + SAVE_ITEM(S3C2410_INTMSK), + SAVE_ITEM(S3C2410_INTSUBMSK), +}; + +/* the extint values move between the s3c2410/s3c2440 and the s3c2412 + * so we use an array to hold them, and to calculate the address of + * the register at run-time +*/ + +static unsigned long save_extint[3]; +static unsigned long save_eintflt[4]; +static unsigned long save_eintmask; + +int s3c24xx_irq_suspend(void) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(save_extint); i++) + save_extint[i] = __raw_readl(S3C24XX_EXTINT0 + (i*4)); + + for (i = 0; i < ARRAY_SIZE(save_eintflt); i++) + save_eintflt[i] = __raw_readl(S3C24XX_EINFLT0 + (i*4)); + + s3c_pm_do_save(irq_save, ARRAY_SIZE(irq_save)); + save_eintmask = __raw_readl(S3C24XX_EINTMASK); + + return 0; +} + +void s3c24xx_irq_resume(void) +{ + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(save_extint); i++) + __raw_writel(save_extint[i], S3C24XX_EXTINT0 + (i*4)); + + for (i = 0; i < ARRAY_SIZE(save_eintflt); i++) + __raw_writel(save_eintflt[i], S3C24XX_EINFLT0 + (i*4)); + + s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save)); + __raw_writel(save_eintmask, S3C24XX_EINTMASK); +} diff --git a/arch/arm/plat-s3c24xx/irq.c b/arch/arm/plat-s3c24xx/irq.c new file mode 100644 index 00000000..fc8c5f89 --- /dev/null +++ b/arch/arm/plat-s3c24xx/irq.c @@ -0,0 +1,676 @@ +/* linux/arch/arm/plat-s3c24xx/irq.c + * + * Copyright (c) 2003-2004 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/sysdev.h> +#include <linux/syscore_ops.h> + +#include <asm/irq.h> +#include <asm/mach/irq.h> + +#include <plat/regs-irqtype.h> + +#include <plat/cpu.h> +#include <plat/pm.h> +#include <plat/irq.h> + +static void +s3c_irq_mask(struct irq_data *data) +{ + unsigned int irqno = data->irq - IRQ_EINT0; + unsigned long mask; + + mask = __raw_readl(S3C2410_INTMSK); + mask |= 1UL << irqno; + __raw_writel(mask, S3C2410_INTMSK); +} + +static inline void +s3c_irq_ack(struct irq_data *data) +{ + unsigned long bitval = 1UL << (data->irq - IRQ_EINT0); + + __raw_writel(bitval, S3C2410_SRCPND); + __raw_writel(bitval, S3C2410_INTPND); +} + +static inline void +s3c_irq_maskack(struct irq_data *data) +{ + unsigned long bitval = 1UL << (data->irq - IRQ_EINT0); + unsigned long mask; + + mask = __raw_readl(S3C2410_INTMSK); + __raw_writel(mask|bitval, S3C2410_INTMSK); + + __raw_writel(bitval, S3C2410_SRCPND); + __raw_writel(bitval, S3C2410_INTPND); +} + + +static void +s3c_irq_unmask(struct irq_data *data) +{ + unsigned int irqno = data->irq; + unsigned long mask; + + if (irqno != IRQ_TIMER4 && irqno != IRQ_EINT8t23) + irqdbf2("s3c_irq_unmask %d\n", irqno); + + irqno -= IRQ_EINT0; + + mask = __raw_readl(S3C2410_INTMSK); + mask &= ~(1UL << irqno); + __raw_writel(mask, S3C2410_INTMSK); +} + +struct irq_chip s3c_irq_level_chip = { + .name = "s3c-level", + .irq_ack = s3c_irq_maskack, + .irq_mask = s3c_irq_mask, + .irq_unmask = s3c_irq_unmask, + .irq_set_wake = s3c_irq_wake +}; + +struct irq_chip s3c_irq_chip = { + .name = "s3c", + .irq_ack = s3c_irq_ack, + .irq_mask = s3c_irq_mask, + .irq_unmask = s3c_irq_unmask, + .irq_set_wake = s3c_irq_wake +}; + +static void +s3c_irqext_mask(struct irq_data *data) +{ + unsigned int irqno = data->irq - EXTINT_OFF; + unsigned long mask; + + mask = __raw_readl(S3C24XX_EINTMASK); + mask |= ( 1UL << irqno); + __raw_writel(mask, S3C24XX_EINTMASK); +} + +static void +s3c_irqext_ack(struct irq_data *data) +{ + unsigned long req; + unsigned long bit; + unsigned long mask; + + bit = 1UL << (data->irq - EXTINT_OFF); + + mask = __raw_readl(S3C24XX_EINTMASK); + + __raw_writel(bit, S3C24XX_EINTPEND); + + req = __raw_readl(S3C24XX_EINTPEND); + req &= ~mask; + + /* not sure if we should be acking the parent irq... */ + + if (data->irq <= IRQ_EINT7) { + if ((req & 0xf0) == 0) + s3c_irq_ack(irq_get_irq_data(IRQ_EINT4t7)); + } else { + if ((req >> 8) == 0) + s3c_irq_ack(irq_get_irq_data(IRQ_EINT8t23)); + } +} + +static void +s3c_irqext_unmask(struct irq_data *data) +{ + unsigned int irqno = data->irq - EXTINT_OFF; + unsigned long mask; + + mask = __raw_readl(S3C24XX_EINTMASK); + mask &= ~(1UL << irqno); + __raw_writel(mask, S3C24XX_EINTMASK); +} + +int +s3c_irqext_type(struct irq_data *data, unsigned int type) +{ + void __iomem *extint_reg; + void __iomem *gpcon_reg; + unsigned long gpcon_offset, extint_offset; + unsigned long newvalue = 0, value; + + if ((data->irq >= IRQ_EINT0) && (data->irq <= IRQ_EINT3)) { + gpcon_reg = S3C2410_GPFCON; + extint_reg = S3C24XX_EXTINT0; + gpcon_offset = (data->irq - IRQ_EINT0) * 2; + extint_offset = (data->irq - IRQ_EINT0) * 4; + } else if ((data->irq >= IRQ_EINT4) && (data->irq <= IRQ_EINT7)) { + gpcon_reg = S3C2410_GPFCON; + extint_reg = S3C24XX_EXTINT0; + gpcon_offset = (data->irq - (EXTINT_OFF)) * 2; + extint_offset = (data->irq - (EXTINT_OFF)) * 4; + } else if ((data->irq >= IRQ_EINT8) && (data->irq <= IRQ_EINT15)) { + gpcon_reg = S3C2410_GPGCON; + extint_reg = S3C24XX_EXTINT1; + gpcon_offset = (data->irq - IRQ_EINT8) * 2; + extint_offset = (data->irq - IRQ_EINT8) * 4; + } else if ((data->irq >= IRQ_EINT16) && (data->irq <= IRQ_EINT23)) { + gpcon_reg = S3C2410_GPGCON; + extint_reg = S3C24XX_EXTINT2; + gpcon_offset = (data->irq - IRQ_EINT8) * 2; + extint_offset = (data->irq - IRQ_EINT16) * 4; + } else { + return -1; + } + + /* Set the GPIO to external interrupt mode */ + value = __raw_readl(gpcon_reg); + value = (value & ~(3 << gpcon_offset)) | (0x02 << gpcon_offset); + __raw_writel(value, gpcon_reg); + + /* Set the external interrupt to pointed trigger type */ + switch (type) + { + case IRQ_TYPE_NONE: + printk(KERN_WARNING "No edge setting!\n"); + break; + + case IRQ_TYPE_EDGE_RISING: + newvalue = S3C2410_EXTINT_RISEEDGE; + break; + + case IRQ_TYPE_EDGE_FALLING: + newvalue = S3C2410_EXTINT_FALLEDGE; + break; + + case IRQ_TYPE_EDGE_BOTH: + newvalue = S3C2410_EXTINT_BOTHEDGE; + break; + + case IRQ_TYPE_LEVEL_LOW: + newvalue = S3C2410_EXTINT_LOWLEV; + break; + + case IRQ_TYPE_LEVEL_HIGH: + newvalue = S3C2410_EXTINT_HILEV; + break; + + default: + printk(KERN_ERR "No such irq type %d", type); + return -1; + } + + value = __raw_readl(extint_reg); + value = (value & ~(7 << extint_offset)) | (newvalue << extint_offset); + __raw_writel(value, extint_reg); + + return 0; +} + +static struct irq_chip s3c_irqext_chip = { + .name = "s3c-ext", + .irq_mask = s3c_irqext_mask, + .irq_unmask = s3c_irqext_unmask, + .irq_ack = s3c_irqext_ack, + .irq_set_type = s3c_irqext_type, + .irq_set_wake = s3c_irqext_wake +}; + +static struct irq_chip s3c_irq_eint0t4 = { + .name = "s3c-ext0", + .irq_ack = s3c_irq_ack, + .irq_mask = s3c_irq_mask, + .irq_unmask = s3c_irq_unmask, + .irq_set_wake = s3c_irq_wake, + .irq_set_type = s3c_irqext_type, +}; + +/* mask values for the parent registers for each of the interrupt types */ + +#define INTMSK_UART0 (1UL << (IRQ_UART0 - IRQ_EINT0)) +#define INTMSK_UART1 (1UL << (IRQ_UART1 - IRQ_EINT0)) +#define INTMSK_UART2 (1UL << (IRQ_UART2 - IRQ_EINT0)) +#define INTMSK_ADCPARENT (1UL << (IRQ_ADCPARENT - IRQ_EINT0)) + + +/* UART0 */ + +static void +s3c_irq_uart0_mask(struct irq_data *data) +{ + s3c_irqsub_mask(data->irq, INTMSK_UART0, 7); +} + +static void +s3c_irq_uart0_unmask(struct irq_data *data) +{ + s3c_irqsub_unmask(data->irq, INTMSK_UART0); +} + +static void +s3c_irq_uart0_ack(struct irq_data *data) +{ + s3c_irqsub_maskack(data->irq, INTMSK_UART0, 7); +} + +static struct irq_chip s3c_irq_uart0 = { + .name = "s3c-uart0", + .irq_mask = s3c_irq_uart0_mask, + .irq_unmask = s3c_irq_uart0_unmask, + .irq_ack = s3c_irq_uart0_ack, +}; + +/* UART1 */ + +static void +s3c_irq_uart1_mask(struct irq_data *data) +{ + s3c_irqsub_mask(data->irq, INTMSK_UART1, 7 << 3); +} + +static void +s3c_irq_uart1_unmask(struct irq_data *data) +{ + s3c_irqsub_unmask(data->irq, INTMSK_UART1); +} + +static void +s3c_irq_uart1_ack(struct irq_data *data) +{ + s3c_irqsub_maskack(data->irq, INTMSK_UART1, 7 << 3); +} + +static struct irq_chip s3c_irq_uart1 = { + .name = "s3c-uart1", + .irq_mask = s3c_irq_uart1_mask, + .irq_unmask = s3c_irq_uart1_unmask, + .irq_ack = s3c_irq_uart1_ack, +}; + +/* UART2 */ + +static void +s3c_irq_uart2_mask(struct irq_data *data) +{ + s3c_irqsub_mask(data->irq, INTMSK_UART2, 7 << 6); +} + +static void +s3c_irq_uart2_unmask(struct irq_data *data) +{ + s3c_irqsub_unmask(data->irq, INTMSK_UART2); +} + +static void +s3c_irq_uart2_ack(struct irq_data *data) +{ + s3c_irqsub_maskack(data->irq, INTMSK_UART2, 7 << 6); +} + +static struct irq_chip s3c_irq_uart2 = { + .name = "s3c-uart2", + .irq_mask = s3c_irq_uart2_mask, + .irq_unmask = s3c_irq_uart2_unmask, + .irq_ack = s3c_irq_uart2_ack, +}; + +/* ADC and Touchscreen */ + +static void +s3c_irq_adc_mask(struct irq_data *d) +{ + s3c_irqsub_mask(d->irq, INTMSK_ADCPARENT, 3 << 9); +} + +static void +s3c_irq_adc_unmask(struct irq_data *d) +{ + s3c_irqsub_unmask(d->irq, INTMSK_ADCPARENT); +} + +static void +s3c_irq_adc_ack(struct irq_data *d) +{ + s3c_irqsub_ack(d->irq, INTMSK_ADCPARENT, 3 << 9); +} + +static struct irq_chip s3c_irq_adc = { + .name = "s3c-adc", + .irq_mask = s3c_irq_adc_mask, + .irq_unmask = s3c_irq_adc_unmask, + .irq_ack = s3c_irq_adc_ack, +}; + +/* irq demux for adc */ +static void s3c_irq_demux_adc(unsigned int irq, + struct irq_desc *desc) +{ + unsigned int subsrc, submsk; + unsigned int offset = 9; + + /* read the current pending interrupts, and the mask + * for what it is available */ + + subsrc = __raw_readl(S3C2410_SUBSRCPND); + submsk = __raw_readl(S3C2410_INTSUBMSK); + + subsrc &= ~submsk; + subsrc >>= offset; + subsrc &= 3; + + if (subsrc != 0) { + if (subsrc & 1) { + generic_handle_irq(IRQ_TC); + } + if (subsrc & 2) { + generic_handle_irq(IRQ_ADC); + } + } +} + +static void s3c_irq_demux_uart(unsigned int start) +{ + unsigned int subsrc, submsk; + unsigned int offset = start - IRQ_S3CUART_RX0; + + /* read the current pending interrupts, and the mask + * for what it is available */ + + subsrc = __raw_readl(S3C2410_SUBSRCPND); + submsk = __raw_readl(S3C2410_INTSUBMSK); + + irqdbf2("s3c_irq_demux_uart: start=%d (%d), subsrc=0x%08x,0x%08x\n", + start, offset, subsrc, submsk); + + subsrc &= ~submsk; + subsrc >>= offset; + subsrc &= 7; + + if (subsrc != 0) { + if (subsrc & 1) + generic_handle_irq(start); + + if (subsrc & 2) + generic_handle_irq(start+1); + + if (subsrc & 4) + generic_handle_irq(start+2); + } +} + +/* uart demux entry points */ + +static void +s3c_irq_demux_uart0(unsigned int irq, + struct irq_desc *desc) +{ + irq = irq; + s3c_irq_demux_uart(IRQ_S3CUART_RX0); +} + +static void +s3c_irq_demux_uart1(unsigned int irq, + struct irq_desc *desc) +{ + irq = irq; + s3c_irq_demux_uart(IRQ_S3CUART_RX1); +} + +static void +s3c_irq_demux_uart2(unsigned int irq, + struct irq_desc *desc) +{ + irq = irq; + s3c_irq_demux_uart(IRQ_S3CUART_RX2); +} + +static void +s3c_irq_demux_extint8(unsigned int irq, + struct irq_desc *desc) +{ + unsigned long eintpnd = __raw_readl(S3C24XX_EINTPEND); + unsigned long eintmsk = __raw_readl(S3C24XX_EINTMASK); + + eintpnd &= ~eintmsk; + eintpnd &= ~0xff; /* ignore lower irqs */ + + /* we may as well handle all the pending IRQs here */ + + while (eintpnd) { + irq = __ffs(eintpnd); + eintpnd &= ~(1<<irq); + + irq += (IRQ_EINT4 - 4); + generic_handle_irq(irq); + } + +} + +static void +s3c_irq_demux_extint4t7(unsigned int irq, + struct irq_desc *desc) +{ + unsigned long eintpnd = __raw_readl(S3C24XX_EINTPEND); + unsigned long eintmsk = __raw_readl(S3C24XX_EINTMASK); + + eintpnd &= ~eintmsk; + eintpnd &= 0xff; /* only lower irqs */ + + /* we may as well handle all the pending IRQs here */ + + while (eintpnd) { + irq = __ffs(eintpnd); + eintpnd &= ~(1<<irq); + + irq += (IRQ_EINT4 - 4); + + generic_handle_irq(irq); + } +} + +#ifdef CONFIG_FIQ +/** + * s3c24xx_set_fiq - set the FIQ routing + * @irq: IRQ number to route to FIQ on processor. + * @on: Whether to route @irq to the FIQ, or to remove the FIQ routing. + * + * Change the state of the IRQ to FIQ routing depending on @irq and @on. If + * @on is true, the @irq is checked to see if it can be routed and the + * interrupt controller updated to route the IRQ. If @on is false, the FIQ + * routing is cleared, regardless of which @irq is specified. + */ +int s3c24xx_set_fiq(unsigned int irq, bool on) +{ + u32 intmod; + unsigned offs; + + if (on) { + offs = irq - FIQ_START; + if (offs > 31) + return -EINVAL; + + intmod = 1 << offs; + } else { + intmod = 0; + } + + __raw_writel(intmod, S3C2410_INTMOD); + return 0; +} + +EXPORT_SYMBOL_GPL(s3c24xx_set_fiq); +#endif + + +/* s3c24xx_init_irq + * + * Initialise S3C2410 IRQ system +*/ + +void __init s3c24xx_init_irq(void) +{ + unsigned long pend; + unsigned long last; + int irqno; + int i; + +#ifdef CONFIG_FIQ + init_FIQ(); +#endif + + irqdbf("s3c2410_init_irq: clearing interrupt status flags\n"); + + /* first, clear all interrupts pending... */ + + last = 0; + for (i = 0; i < 4; i++) { + pend = __raw_readl(S3C24XX_EINTPEND); + + if (pend == 0 || pend == last) + break; + + __raw_writel(pend, S3C24XX_EINTPEND); + printk("irq: clearing pending ext status %08x\n", (int)pend); + last = pend; + } + + last = 0; + for (i = 0; i < 4; i++) { + pend = __raw_readl(S3C2410_INTPND); + + if (pend == 0 || pend == last) + break; + + __raw_writel(pend, S3C2410_SRCPND); + __raw_writel(pend, S3C2410_INTPND); + printk("irq: clearing pending status %08x\n", (int)pend); + last = pend; + } + + last = 0; + for (i = 0; i < 4; i++) { + pend = __raw_readl(S3C2410_SUBSRCPND); + + if (pend == 0 || pend == last) + break; + + printk("irq: clearing subpending status %08x\n", (int)pend); + __raw_writel(pend, S3C2410_SUBSRCPND); + last = pend; + } + + /* register the main interrupts */ + + irqdbf("s3c2410_init_irq: registering s3c2410 interrupt handlers\n"); + + for (irqno = IRQ_EINT4t7; irqno <= IRQ_ADCPARENT; irqno++) { + /* set all the s3c2410 internal irqs */ + + switch (irqno) { + /* deal with the special IRQs (cascaded) */ + + case IRQ_EINT4t7: + case IRQ_EINT8t23: + case IRQ_UART0: + case IRQ_UART1: + case IRQ_UART2: + case IRQ_ADCPARENT: + irq_set_chip_and_handler(irqno, &s3c_irq_level_chip, + handle_level_irq); + break; + + case IRQ_RESERVED6: + case IRQ_RESERVED24: + /* no IRQ here */ + break; + + default: + //irqdbf("registering irq %d (s3c irq)\n", irqno); + irq_set_chip_and_handler(irqno, &s3c_irq_chip, + handle_edge_irq); + set_irq_flags(irqno, IRQF_VALID); + } + } + + /* setup the cascade irq handlers */ + + irq_set_chained_handler(IRQ_EINT4t7, s3c_irq_demux_extint4t7); + irq_set_chained_handler(IRQ_EINT8t23, s3c_irq_demux_extint8); + + irq_set_chained_handler(IRQ_UART0, s3c_irq_demux_uart0); + irq_set_chained_handler(IRQ_UART1, s3c_irq_demux_uart1); + irq_set_chained_handler(IRQ_UART2, s3c_irq_demux_uart2); + irq_set_chained_handler(IRQ_ADCPARENT, s3c_irq_demux_adc); + + /* external interrupts */ + + for (irqno = IRQ_EINT0; irqno <= IRQ_EINT3; irqno++) { + irqdbf("registering irq %d (ext int)\n", irqno); + irq_set_chip_and_handler(irqno, &s3c_irq_eint0t4, + handle_edge_irq); + set_irq_flags(irqno, IRQF_VALID); + } + + for (irqno = IRQ_EINT4; irqno <= IRQ_EINT23; irqno++) { + irqdbf("registering irq %d (extended s3c irq)\n", irqno); + irq_set_chip_and_handler(irqno, &s3c_irqext_chip, + handle_edge_irq); + set_irq_flags(irqno, IRQF_VALID); + } + + /* register the uart interrupts */ + + irqdbf("s3c2410: registering external interrupts\n"); + + for (irqno = IRQ_S3CUART_RX0; irqno <= IRQ_S3CUART_ERR0; irqno++) { + irqdbf("registering irq %d (s3c uart0 irq)\n", irqno); + irq_set_chip_and_handler(irqno, &s3c_irq_uart0, + handle_level_irq); + set_irq_flags(irqno, IRQF_VALID); + } + + for (irqno = IRQ_S3CUART_RX1; irqno <= IRQ_S3CUART_ERR1; irqno++) { + irqdbf("registering irq %d (s3c uart1 irq)\n", irqno); + irq_set_chip_and_handler(irqno, &s3c_irq_uart1, + handle_level_irq); + set_irq_flags(irqno, IRQF_VALID); + } + + for (irqno = IRQ_S3CUART_RX2; irqno <= IRQ_S3CUART_ERR2; irqno++) { + irqdbf("registering irq %d (s3c uart2 irq)\n", irqno); + irq_set_chip_and_handler(irqno, &s3c_irq_uart2, + handle_level_irq); + set_irq_flags(irqno, IRQF_VALID); + } + + for (irqno = IRQ_TC; irqno <= IRQ_ADC; irqno++) { + irqdbf("registering irq %d (s3c adc irq)\n", irqno); + irq_set_chip_and_handler(irqno, &s3c_irq_adc, handle_edge_irq); + set_irq_flags(irqno, IRQF_VALID); + } + + irqdbf("s3c2410: registered interrupt handlers\n"); +} + +struct syscore_ops s3c24xx_irq_syscore_ops = { + .suspend = s3c24xx_irq_suspend, + .resume = s3c24xx_irq_resume, +}; diff --git a/arch/arm/plat-s3c24xx/pm-simtec.c b/arch/arm/plat-s3c24xx/pm-simtec.c new file mode 100644 index 00000000..663b280d --- /dev/null +++ b/arch/arm/plat-s3c24xx/pm-simtec.c @@ -0,0 +1,67 @@ +/* linux/arch/arm/plat-s3c24xx/pm-simtec.c + * + * Copyright 2004 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * http://armlinux.simtec.co.uk/ + * + * Power Management helpers for Simtec S3C24XX implementations + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/kernel.h> +#include <linux/types.h> +#include <linux/interrupt.h> +#include <linux/list.h> +#include <linux/timer.h> +#include <linux/init.h> +#include <linux/sysdev.h> +#include <linux/device.h> +#include <linux/io.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> + +#include <mach/hardware.h> + +#include <mach/map.h> +#include <mach/regs-gpio.h> +#include <mach/regs-mem.h> + +#include <asm/mach-types.h> + +#include <plat/pm.h> + +#define COPYRIGHT ", Copyright 2005 Simtec Electronics" + +/* pm_simtec_init + * + * enable the power management functions +*/ + +static __init int pm_simtec_init(void) +{ + unsigned long gstatus4; + + /* check which machine we are running on */ + + if (!machine_is_bast() && !machine_is_vr1000() && + !machine_is_anubis() && !machine_is_osiris() && + !machine_is_aml_m5900()) + return 0; + + printk(KERN_INFO "Simtec Board Power Manangement" COPYRIGHT "\n"); + + gstatus4 = (__raw_readl(S3C2410_BANKCON7) & 0x3) << 30; + gstatus4 |= (__raw_readl(S3C2410_BANKCON6) & 0x3) << 28; + gstatus4 |= (__raw_readl(S3C2410_BANKSIZE) & S3C2410_BANKSIZE_MASK); + + __raw_writel(gstatus4, S3C2410_GSTATUS4); + + return s3c_pm_init(); +} + +arch_initcall(pm_simtec_init); diff --git a/arch/arm/plat-s3c24xx/pm.c b/arch/arm/plat-s3c24xx/pm.c new file mode 100644 index 00000000..60627e63 --- /dev/null +++ b/arch/arm/plat-s3c24xx/pm.c @@ -0,0 +1,149 @@ +/* linux/arch/arm/plat-s3c24xx/pm.c + * + * Copyright (c) 2004-2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX Power Manager (Suspend-To-RAM) support + * + * See Documentation/arm/Samsung-S3C24XX/Suspend.txt for more information + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Parts based on arch/arm/mach-pxa/pm.c + * + * Thanks to Dimitry Andric for debugging +*/ + +#include <linux/init.h> +#include <linux/suspend.h> +#include <linux/errno.h> +#include <linux/time.h> +#include <linux/gpio.h> +#include <linux/interrupt.h> +#include <linux/serial_core.h> +#include <linux/io.h> + +#include <plat/regs-serial.h> +#include <mach/regs-clock.h> +#include <mach/regs-gpio.h> +#include <mach/regs-mem.h> +#include <mach/regs-irq.h> + +#include <asm/mach/time.h> + +#include <plat/gpio-cfg.h> +#include <plat/pm.h> + +#define PFX "s3c24xx-pm: " + +static struct sleep_save core_save[] = { + SAVE_ITEM(S3C2410_LOCKTIME), + SAVE_ITEM(S3C2410_CLKCON), + + /* we restore the timings here, with the proviso that the board + * brings the system up in an slower, or equal frequency setting + * to the original system. + * + * if we cannot guarantee this, then things are going to go very + * wrong here, as we modify the refresh and both pll settings. + */ + + SAVE_ITEM(S3C2410_BWSCON), + SAVE_ITEM(S3C2410_BANKCON0), + SAVE_ITEM(S3C2410_BANKCON1), + SAVE_ITEM(S3C2410_BANKCON2), + SAVE_ITEM(S3C2410_BANKCON3), + SAVE_ITEM(S3C2410_BANKCON4), + SAVE_ITEM(S3C2410_BANKCON5), + +#ifndef CONFIG_CPU_FREQ + SAVE_ITEM(S3C2410_CLKDIVN), + SAVE_ITEM(S3C2410_MPLLCON), + SAVE_ITEM(S3C2410_REFRESH), +#endif + SAVE_ITEM(S3C2410_UPLLCON), + SAVE_ITEM(S3C2410_CLKSLOW), +}; + +static struct sleep_save misc_save[] = { + SAVE_ITEM(S3C2410_DCLKCON), +}; + +/* s3c_pm_check_resume_pin + * + * check to see if the pin is configured correctly for sleep mode, and + * make any necessary adjustments if it is not +*/ + +static void s3c_pm_check_resume_pin(unsigned int pin, unsigned int irqoffs) +{ + unsigned long irqstate; + unsigned long pinstate; + int irq = gpio_to_irq(pin); + + if (irqoffs < 4) + irqstate = s3c_irqwake_intmask & (1L<<irqoffs); + else + irqstate = s3c_irqwake_eintmask & (1L<<irqoffs); + + pinstate = s3c_gpio_getcfg(pin); + + if (!irqstate) { + if (pinstate == S3C2410_GPIO_IRQ) + S3C_PMDBG("Leaving IRQ %d (pin %d) as is\n", irq, pin); + } else { + if (pinstate == S3C2410_GPIO_IRQ) { + S3C_PMDBG("Disabling IRQ %d (pin %d)\n", irq, pin); + s3c_gpio_cfgpin(pin, S3C2410_GPIO_INPUT); + } + } +} + +/* s3c_pm_configure_extint + * + * configure all external interrupt pins +*/ + +void s3c_pm_configure_extint(void) +{ + int pin; + + /* for each of the external interrupts (EINT0..EINT15) we + * need to check wether it is an external interrupt source, + * and then configure it as an input if it is not + */ + + for (pin = S3C2410_GPF(0); pin <= S3C2410_GPF(7); pin++) { + s3c_pm_check_resume_pin(pin, pin - S3C2410_GPF(0)); + } + + for (pin = S3C2410_GPG(0); pin <= S3C2410_GPG(7); pin++) { + s3c_pm_check_resume_pin(pin, (pin - S3C2410_GPG(0))+8); + } +} + + +void s3c_pm_restore_core(void) +{ + s3c_pm_do_restore_core(core_save, ARRAY_SIZE(core_save)); + s3c_pm_do_restore(misc_save, ARRAY_SIZE(misc_save)); +} + +void s3c_pm_save_core(void) +{ + s3c_pm_do_save(misc_save, ARRAY_SIZE(misc_save)); + s3c_pm_do_save(core_save, ARRAY_SIZE(core_save)); +} + diff --git a/arch/arm/plat-s3c24xx/s3c2410-clock.c b/arch/arm/plat-s3c24xx/s3c2410-clock.c new file mode 100644 index 00000000..9ecc5d91 --- /dev/null +++ b/arch/arm/plat-s3c24xx/s3c2410-clock.c @@ -0,0 +1,268 @@ +/* linux/arch/arm/mach-s3c2410/clock.c + * + * Copyright (c) 2006 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2410,S3C2440,S3C2442 Clock control support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/errno.h> +#include <linux/err.h> +#include <linux/sysdev.h> +#include <linux/clk.h> +#include <linux/mutex.h> +#include <linux/delay.h> +#include <linux/serial_core.h> +#include <linux/io.h> + +#include <asm/mach/map.h> + +#include <mach/hardware.h> + +#include <plat/regs-serial.h> +#include <mach/regs-clock.h> +#include <mach/regs-gpio.h> + +#include <plat/s3c2410.h> +#include <plat/clock.h> +#include <plat/cpu.h> + +int s3c2410_clkcon_enable(struct clk *clk, int enable) +{ + unsigned int clocks = clk->ctrlbit; + unsigned long clkcon; + + clkcon = __raw_readl(S3C2410_CLKCON); + + if (enable) + clkcon |= clocks; + else + clkcon &= ~clocks; + + /* ensure none of the special function bits set */ + clkcon &= ~(S3C2410_CLKCON_IDLE|S3C2410_CLKCON_POWER); + + __raw_writel(clkcon, S3C2410_CLKCON); + + return 0; +} + +static int s3c2410_upll_enable(struct clk *clk, int enable) +{ + unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW); + unsigned long orig = clkslow; + + if (enable) + clkslow &= ~S3C2410_CLKSLOW_UCLK_OFF; + else + clkslow |= S3C2410_CLKSLOW_UCLK_OFF; + + __raw_writel(clkslow, S3C2410_CLKSLOW); + + /* if we started the UPLL, then allow to settle */ + + if (enable && (orig & S3C2410_CLKSLOW_UCLK_OFF)) + udelay(200); + + return 0; +} + +/* standard clock definitions */ + +static struct clk init_clocks_off[] = { + { + .name = "nand", + .id = -1, + .parent = &clk_h, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_NAND, + }, { + .name = "sdi", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_SDI, + }, { + .name = "adc", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_ADC, + }, { + .name = "i2c", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_IIC, + }, { + .name = "iis", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_IIS, + }, { + .name = "spi", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_SPI, + } +}; + +static struct clk init_clocks[] = { + { + .name = "lcd", + .id = -1, + .parent = &clk_h, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_LCDC, + }, { + .name = "gpio", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_GPIO, + }, { + .name = "usb-host", + .id = -1, + .parent = &clk_h, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_USBH, + }, { + .name = "usb-device", + .id = -1, + .parent = &clk_h, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_USBD, + }, { + .name = "timers", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_PWMT, + }, { + .name = "uart", + .id = 0, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_UART0, + }, { + .name = "uart", + .id = 1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_UART1, + }, { + .name = "uart", + .id = 2, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_UART2, + }, { + .name = "rtc", + .id = -1, + .parent = &clk_p, + .enable = s3c2410_clkcon_enable, + .ctrlbit = S3C2410_CLKCON_RTC, + }, { + .name = "watchdog", + .id = -1, + .parent = &clk_p, + .ctrlbit = 0, + }, { + .name = "usb-bus-host", + .id = -1, + .parent = &clk_usb_bus, + }, { + .name = "usb-bus-gadget", + .id = -1, + .parent = &clk_usb_bus, + }, +}; + +/* s3c2410_baseclk_add() + * + * Add all the clocks used by the s3c2410 or compatible CPUs + * such as the S3C2440 and S3C2442. + * + * We cannot use a system device as we are needed before any + * of the init-calls that initialise the devices are actually + * done. +*/ + +int __init s3c2410_baseclk_add(void) +{ + unsigned long clkslow = __raw_readl(S3C2410_CLKSLOW); + unsigned long clkcon = __raw_readl(S3C2410_CLKCON); + struct clk *clkp; + struct clk *xtal; + int ret; + int ptr; + + clk_upll.enable = s3c2410_upll_enable; + + if (s3c24xx_register_clock(&clk_usb_bus) < 0) + printk(KERN_ERR "failed to register usb bus clock\n"); + + /* register clocks from clock array */ + + clkp = init_clocks; + for (ptr = 0; ptr < ARRAY_SIZE(init_clocks); ptr++, clkp++) { + /* ensure that we note the clock state */ + + clkp->usage = clkcon & clkp->ctrlbit ? 1 : 0; + + ret = s3c24xx_register_clock(clkp); + if (ret < 0) { + printk(KERN_ERR "Failed to register clock %s (%d)\n", + clkp->name, ret); + } + } + + /* We must be careful disabling the clocks we are not intending to + * be using at boot time, as subsystems such as the LCD which do + * their own DMA requests to the bus can cause the system to lockup + * if they where in the middle of requesting bus access. + * + * Disabling the LCD clock if the LCD is active is very dangerous, + * and therefore the bootloader should be careful to not enable + * the LCD clock if it is not needed. + */ + + /* install (and disable) the clocks we do not need immediately */ + + s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off)); + s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off)); + + /* show the clock-slow value */ + + xtal = clk_get(NULL, "xtal"); + + printk("CLOCK: Slow mode (%ld.%ld MHz), %s, MPLL %s, UPLL %s\n", + print_mhz(clk_get_rate(xtal) / + ( 2 * S3C2410_CLKSLOW_GET_SLOWVAL(clkslow))), + (clkslow & S3C2410_CLKSLOW_SLOW) ? "slow" : "fast", + (clkslow & S3C2410_CLKSLOW_MPLL_OFF) ? "off" : "on", + (clkslow & S3C2410_CLKSLOW_UCLK_OFF) ? "off" : "on"); + + s3c_pwmclk_init(); + return 0; +} diff --git a/arch/arm/plat-s3c24xx/s3c2410-cpufreq-utils.c b/arch/arm/plat-s3c24xx/s3c2410-cpufreq-utils.c new file mode 100644 index 00000000..43ea8019 --- /dev/null +++ b/arch/arm/plat-s3c24xx/s3c2410-cpufreq-utils.c @@ -0,0 +1,64 @@ +/* linux/arch/arm/plat-s3c24xx/s3c2410-cpufreq-utils.c + * + * Copyright (c) 2009 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX CPU Frequency scaling - utils for S3C2410/S3C2440/S3C2442 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/cpufreq.h> +#include <linux/io.h> + +#include <mach/map.h> +#include <mach/regs-mem.h> +#include <mach/regs-clock.h> + +#include <plat/cpu-freq-core.h> + +/** + * s3c2410_cpufreq_setrefresh - set SDRAM refresh value + * @cfg: The frequency configuration + * + * Set the SDRAM refresh value appropriately for the configured + * frequency. + */ +void s3c2410_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg) +{ + struct s3c_cpufreq_board *board = cfg->board; + unsigned long refresh; + unsigned long refval; + + /* Reduce both the refresh time (in ns) and the frequency (in MHz) + * down to ensure that we do not overflow 32 bit numbers. + * + * This should work for HCLK up to 133MHz and refresh period up + * to 30usec. + */ + + refresh = (cfg->freq.hclk / 100) * (board->refresh / 10); + refresh = DIV_ROUND_UP(refresh, (1000 * 1000)); /* apply scale */ + refresh = (1 << 11) + 1 - refresh; + + s3c_freq_dbg("%s: refresh value %lu\n", __func__, refresh); + + refval = __raw_readl(S3C2410_REFRESH); + refval &= ~((1 << 12) - 1); + refval |= refresh; + __raw_writel(refval, S3C2410_REFRESH); +} + +/** + * s3c2410_set_fvco - set the PLL value + * @cfg: The frequency configuration + */ +void s3c2410_set_fvco(struct s3c_cpufreq_config *cfg) +{ + __raw_writel(cfg->pll.index, S3C2410_MPLLCON); +} diff --git a/arch/arm/plat-s3c24xx/s3c2410-iotiming.c b/arch/arm/plat-s3c24xx/s3c2410-iotiming.c new file mode 100644 index 00000000..b1908e56 --- /dev/null +++ b/arch/arm/plat-s3c24xx/s3c2410-iotiming.c @@ -0,0 +1,478 @@ +/* linux/arch/arm/plat-s3c24xx/s3c2410-iotiming.c + * + * Copyright (c) 2006-2009 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX CPU Frequency scaling - IO timing for S3C2410/S3C2440/S3C2442 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/errno.h> +#include <linux/cpufreq.h> +#include <linux/seq_file.h> +#include <linux/io.h> +#include <linux/slab.h> + +#include <mach/map.h> +#include <mach/regs-mem.h> +#include <mach/regs-clock.h> + +#include <plat/cpu-freq-core.h> + +#define print_ns(x) ((x) / 10), ((x) % 10) + +/** + * s3c2410_print_timing - print bank timing data for debug purposes + * @pfx: The prefix to put on the output + * @timings: The timing inforamtion to print. +*/ +static void s3c2410_print_timing(const char *pfx, + struct s3c_iotimings *timings) +{ + struct s3c2410_iobank_timing *bt; + int bank; + + for (bank = 0; bank < MAX_BANKS; bank++) { + bt = timings->bank[bank].io_2410; + if (!bt) + continue; + + printk(KERN_DEBUG "%s %d: Tacs=%d.%d, Tcos=%d.%d, Tacc=%d.%d, " + "Tcoh=%d.%d, Tcah=%d.%d\n", pfx, bank, + print_ns(bt->tacs), + print_ns(bt->tcos), + print_ns(bt->tacc), + print_ns(bt->tcoh), + print_ns(bt->tcah)); + } +} + +/** + * bank_reg - convert bank number to pointer to the control register. + * @bank: The IO bank number. + */ +static inline void __iomem *bank_reg(unsigned int bank) +{ + return S3C2410_BANKCON0 + (bank << 2); +} + +/** + * bank_is_io - test whether bank is used for IO + * @bankcon: The bank control register. + * + * This is a simplistic test to see if any BANKCON[x] is not an IO + * bank. It currently does not take into account whether BWSCON has + * an illegal width-setting in it, or if the pin connected to nCS[x] + * is actually being handled as a chip-select. + */ +static inline int bank_is_io(unsigned long bankcon) +{ + return !(bankcon & S3C2410_BANKCON_SDRAM); +} + +/** + * to_div - convert cycle time to divisor + * @cyc: The cycle time, in 10ths of nanoseconds. + * @hclk_tns: The cycle time for HCLK, in 10ths of nanoseconds. + * + * Convert the given cycle time into the divisor to use to obtain it from + * HCLK. +*/ +static inline unsigned int to_div(unsigned int cyc, unsigned int hclk_tns) +{ + if (cyc == 0) + return 0; + + return DIV_ROUND_UP(cyc, hclk_tns); +} + +/** + * calc_0124 - calculate divisor control for divisors that do /0, /1. /2 and /4 + * @cyc: The cycle time, in 10ths of nanoseconds. + * @hclk_tns: The cycle time for HCLK, in 10ths of nanoseconds. + * @v: Pointer to register to alter. + * @shift: The shift to get to the control bits. + * + * Calculate the divisor, and turn it into the correct control bits to + * set in the result, @v. + */ +static unsigned int calc_0124(unsigned int cyc, unsigned long hclk_tns, + unsigned long *v, int shift) +{ + unsigned int div = to_div(cyc, hclk_tns); + unsigned long val; + + s3c_freq_iodbg("%s: cyc=%d, hclk=%lu, shift=%d => div %d\n", + __func__, cyc, hclk_tns, shift, div); + + switch (div) { + case 0: + val = 0; + break; + case 1: + val = 1; + break; + case 2: + val = 2; + break; + case 3: + case 4: + val = 3; + break; + default: + return -1; + } + + *v |= val << shift; + return 0; +} + +int calc_tacp(unsigned int cyc, unsigned long hclk, unsigned long *v) +{ + /* Currently no support for Tacp calculations. */ + return 0; +} + +/** + * calc_tacc - calculate divisor control for tacc. + * @cyc: The cycle time, in 10ths of nanoseconds. + * @nwait_en: IS nWAIT enabled for this bank. + * @hclk_tns: The cycle time for HCLK, in 10ths of nanoseconds. + * @v: Pointer to register to alter. + * + * Calculate the divisor control for tACC, taking into account whether + * the bank has nWAIT enabled. The result is used to modify the value + * pointed to by @v. +*/ +static int calc_tacc(unsigned int cyc, int nwait_en, + unsigned long hclk_tns, unsigned long *v) +{ + unsigned int div = to_div(cyc, hclk_tns); + unsigned long val; + + s3c_freq_iodbg("%s: cyc=%u, nwait=%d, hclk=%lu => div=%u\n", + __func__, cyc, nwait_en, hclk_tns, div); + + /* if nWait enabled on an bank, Tacc must be at-least 4 cycles. */ + if (nwait_en && div < 4) + div = 4; + + switch (div) { + case 0: + val = 0; + break; + + case 1: + case 2: + case 3: + case 4: + val = div - 1; + break; + + case 5: + case 6: + val = 4; + break; + + case 7: + case 8: + val = 5; + break; + + case 9: + case 10: + val = 6; + break; + + case 11: + case 12: + case 13: + case 14: + val = 7; + break; + + default: + return -1; + } + + *v |= val << 8; + return 0; +} + +/** + * s3c2410_calc_bank - calculate bank timing infromation + * @cfg: The configuration we need to calculate for. + * @bt: The bank timing information. + * + * Given the cycle timine for a bank @bt, calculate the new BANKCON + * setting for the @cfg timing. This updates the timing information + * ready for the cpu frequency change. + */ +static int s3c2410_calc_bank(struct s3c_cpufreq_config *cfg, + struct s3c2410_iobank_timing *bt) +{ + unsigned long hclk = cfg->freq.hclk_tns; + unsigned long res; + int ret; + + res = bt->bankcon; + res &= (S3C2410_BANKCON_SDRAM | S3C2410_BANKCON_PMC16); + + /* tacp: 2,3,4,5 */ + /* tcah: 0,1,2,4 */ + /* tcoh: 0,1,2,4 */ + /* tacc: 1,2,3,4,6,7,10,14 (>4 for nwait) */ + /* tcos: 0,1,2,4 */ + /* tacs: 0,1,2,4 */ + + ret = calc_0124(bt->tacs, hclk, &res, S3C2410_BANKCON_Tacs_SHIFT); + ret |= calc_0124(bt->tcos, hclk, &res, S3C2410_BANKCON_Tcos_SHIFT); + ret |= calc_0124(bt->tcah, hclk, &res, S3C2410_BANKCON_Tcah_SHIFT); + ret |= calc_0124(bt->tcoh, hclk, &res, S3C2410_BANKCON_Tcoh_SHIFT); + + if (ret) + return -EINVAL; + + ret |= calc_tacp(bt->tacp, hclk, &res); + ret |= calc_tacc(bt->tacc, bt->nwait_en, hclk, &res); + + if (ret) + return -EINVAL; + + bt->bankcon = res; + return 0; +} + +static unsigned int tacc_tab[] = { + [0] = 1, + [1] = 2, + [2] = 3, + [3] = 4, + [4] = 6, + [5] = 9, + [6] = 10, + [7] = 14, +}; + +/** + * get_tacc - turn tACC value into cycle time + * @hclk_tns: The cycle time for HCLK, in 10ths of nanoseconds. + * @val: The bank timing register value, shifed down. + */ +static unsigned int get_tacc(unsigned long hclk_tns, + unsigned long val) +{ + val &= 7; + return hclk_tns * tacc_tab[val]; +} + +/** + * get_0124 - turn 0/1/2/4 divider into cycle time + * @hclk_tns: The cycle time for HCLK, in 10ths of nanoseconds. + * @val: The bank timing register value, shifed down. + */ +static unsigned int get_0124(unsigned long hclk_tns, + unsigned long val) +{ + val &= 3; + return hclk_tns * ((val == 3) ? 4 : val); +} + +/** + * s3c2410_iotiming_getbank - turn BANKCON into cycle time information + * @cfg: The frequency configuration + * @bt: The bank timing to fill in (uses cached BANKCON) + * + * Given the BANKCON setting in @bt and the current frequency settings + * in @cfg, update the cycle timing information. + */ +void s3c2410_iotiming_getbank(struct s3c_cpufreq_config *cfg, + struct s3c2410_iobank_timing *bt) +{ + unsigned long bankcon = bt->bankcon; + unsigned long hclk = cfg->freq.hclk_tns; + + bt->tcah = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tcah_SHIFT); + bt->tcoh = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tcoh_SHIFT); + bt->tcos = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tcos_SHIFT); + bt->tacs = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tacs_SHIFT); + bt->tacc = get_tacc(hclk, bankcon >> S3C2410_BANKCON_Tacc_SHIFT); +} + +/** + * s3c2410_iotiming_debugfs - debugfs show io bank timing information + * @seq: The seq_file to write output to using seq_printf(). + * @cfg: The current configuration. + * @iob: The IO bank information to decode. + */ +void s3c2410_iotiming_debugfs(struct seq_file *seq, + struct s3c_cpufreq_config *cfg, + union s3c_iobank *iob) +{ + struct s3c2410_iobank_timing *bt = iob->io_2410; + unsigned long bankcon = bt->bankcon; + unsigned long hclk = cfg->freq.hclk_tns; + unsigned int tacs; + unsigned int tcos; + unsigned int tacc; + unsigned int tcoh; + unsigned int tcah; + + seq_printf(seq, "BANKCON=0x%08lx\n", bankcon); + + tcah = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tcah_SHIFT); + tcoh = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tcoh_SHIFT); + tcos = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tcos_SHIFT); + tacs = get_0124(hclk, bankcon >> S3C2410_BANKCON_Tacs_SHIFT); + tacc = get_tacc(hclk, bankcon >> S3C2410_BANKCON_Tacc_SHIFT); + + seq_printf(seq, + "\tRead: Tacs=%d.%d, Tcos=%d.%d, Tacc=%d.%d, Tcoh=%d.%d, Tcah=%d.%d\n", + print_ns(bt->tacs), + print_ns(bt->tcos), + print_ns(bt->tacc), + print_ns(bt->tcoh), + print_ns(bt->tcah)); + + seq_printf(seq, + "\t Set: Tacs=%d.%d, Tcos=%d.%d, Tacc=%d.%d, Tcoh=%d.%d, Tcah=%d.%d\n", + print_ns(tacs), + print_ns(tcos), + print_ns(tacc), + print_ns(tcoh), + print_ns(tcah)); +} + +/** + * s3c2410_iotiming_calc - Calculate bank timing for frequency change. + * @cfg: The frequency configuration + * @iot: The IO timing information to fill out. + * + * Calculate the new values for the banks in @iot based on the new + * frequency information in @cfg. This is then used by s3c2410_iotiming_set() + * to update the timing when necessary. + */ +int s3c2410_iotiming_calc(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot) +{ + struct s3c2410_iobank_timing *bt; + unsigned long bankcon; + int bank; + int ret; + + for (bank = 0; bank < MAX_BANKS; bank++) { + bankcon = __raw_readl(bank_reg(bank)); + bt = iot->bank[bank].io_2410; + + if (!bt) + continue; + + bt->bankcon = bankcon; + + ret = s3c2410_calc_bank(cfg, bt); + if (ret) { + printk(KERN_ERR "%s: cannot calculate bank %d io\n", + __func__, bank); + goto err; + } + + s3c_freq_iodbg("%s: bank %d: con=%08lx\n", + __func__, bank, bt->bankcon); + } + + return 0; + err: + return ret; +} + +/** + * s3c2410_iotiming_set - set the IO timings from the given setup. + * @cfg: The frequency configuration + * @iot: The IO timing information to use. + * + * Set all the currently used IO bank timing information generated + * by s3c2410_iotiming_calc() once the core has validated that all + * the new values are within permitted bounds. + */ +void s3c2410_iotiming_set(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot) +{ + struct s3c2410_iobank_timing *bt; + int bank; + + /* set the io timings from the specifier */ + + for (bank = 0; bank < MAX_BANKS; bank++) { + bt = iot->bank[bank].io_2410; + if (!bt) + continue; + + __raw_writel(bt->bankcon, bank_reg(bank)); + } +} + +/** + * s3c2410_iotiming_get - Get the timing information from current registers. + * @cfg: The frequency configuration + * @timings: The IO timing information to fill out. + * + * Calculate the @timings timing information from the current frequency + * information in @cfg, and the new frequency configur + * through all the IO banks, reading the state and then updating @iot + * as necessary. + * + * This is used at the moment on initialisation to get the current + * configuration so that boards do not have to carry their own setup + * if the timings are correct on initialisation. + */ + +int s3c2410_iotiming_get(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings) +{ + struct s3c2410_iobank_timing *bt; + unsigned long bankcon; + unsigned long bwscon; + int bank; + + bwscon = __raw_readl(S3C2410_BWSCON); + + /* look through all banks to see what is currently set. */ + + for (bank = 0; bank < MAX_BANKS; bank++) { + bankcon = __raw_readl(bank_reg(bank)); + + if (!bank_is_io(bankcon)) + continue; + + s3c_freq_iodbg("%s: bank %d: con %08lx\n", + __func__, bank, bankcon); + + bt = kzalloc(sizeof(struct s3c2410_iobank_timing), GFP_KERNEL); + if (!bt) { + printk(KERN_ERR "%s: no memory for bank\n", __func__); + return -ENOMEM; + } + + /* find out in nWait is enabled for bank. */ + + if (bank != 0) { + unsigned long tmp = S3C2410_BWSCON_GET(bwscon, bank); + if (tmp & S3C2410_BWSCON_WS) + bt->nwait_en = 1; + } + + timings->bank[bank].io_2410 = bt; + bt->bankcon = bankcon; + + s3c2410_iotiming_getbank(cfg, bt); + } + + s3c2410_print_timing("get", timings); + return 0; +} diff --git a/arch/arm/plat-s3c24xx/s3c2412-iotiming.c b/arch/arm/plat-s3c24xx/s3c2412-iotiming.c new file mode 100644 index 00000000..0b46d389 --- /dev/null +++ b/arch/arm/plat-s3c24xx/s3c2412-iotiming.c @@ -0,0 +1,286 @@ +/* linux/arch/arm/plat-s3c24xx/s3c2412-iotiming.c + * + * Copyright (c) 2006-2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2412/S3C2443 (PL093 based) IO timing support + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/cpufreq.h> +#include <linux/seq_file.h> +#include <linux/sysdev.h> +#include <linux/delay.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/slab.h> + +#include <linux/amba/pl093.h> + +#include <asm/mach/arch.h> +#include <asm/mach/map.h> + +#include <mach/regs-s3c2412-mem.h> + +#include <plat/cpu.h> +#include <plat/cpu-freq-core.h> +#include <plat/clock.h> + +#define print_ns(x) ((x) / 10), ((x) % 10) + +/** + * s3c2412_print_timing - print timing infromation via printk. + * @pfx: The prefix to print each line with. + * @iot: The IO timing information + */ +static void s3c2412_print_timing(const char *pfx, struct s3c_iotimings *iot) +{ + struct s3c2412_iobank_timing *bt; + unsigned int bank; + + for (bank = 0; bank < MAX_BANKS; bank++) { + bt = iot->bank[bank].io_2412; + if (!bt) + continue; + + printk(KERN_DEBUG "%s: %d: idcy=%d.%d wstrd=%d.%d wstwr=%d,%d" + "wstoen=%d.%d wstwen=%d.%d wstbrd=%d.%d\n", pfx, bank, + print_ns(bt->idcy), + print_ns(bt->wstrd), + print_ns(bt->wstwr), + print_ns(bt->wstoen), + print_ns(bt->wstwen), + print_ns(bt->wstbrd)); + } +} + +/** + * to_div - turn a cycle length into a divisor setting. + * @cyc_tns: The cycle time in 10ths of nanoseconds. + * @clk_tns: The clock period in 10ths of nanoseconds. + */ +static inline unsigned int to_div(unsigned int cyc_tns, unsigned int clk_tns) +{ + return cyc_tns ? DIV_ROUND_UP(cyc_tns, clk_tns) : 0; +} + +/** + * calc_timing - calculate timing divisor value and check in range. + * @hwtm: The hardware timing in 10ths of nanoseconds. + * @clk_tns: The clock period in 10ths of nanoseconds. + * @err: Pointer to err variable to update in event of failure. + */ +static unsigned int calc_timing(unsigned int hwtm, unsigned int clk_tns, + unsigned int *err) +{ + unsigned int ret = to_div(hwtm, clk_tns); + + if (ret > 0xf) + *err = -EINVAL; + + return ret; +} + +/** + * s3c2412_calc_bank - calculate the bank divisor settings. + * @cfg: The current frequency configuration. + * @bt: The bank timing. + */ +static int s3c2412_calc_bank(struct s3c_cpufreq_config *cfg, + struct s3c2412_iobank_timing *bt) +{ + unsigned int hclk = cfg->freq.hclk_tns; + int err = 0; + + bt->smbidcyr = calc_timing(bt->idcy, hclk, &err); + bt->smbwstrd = calc_timing(bt->wstrd, hclk, &err); + bt->smbwstwr = calc_timing(bt->wstwr, hclk, &err); + bt->smbwstoen = calc_timing(bt->wstoen, hclk, &err); + bt->smbwstwen = calc_timing(bt->wstwen, hclk, &err); + bt->smbwstbrd = calc_timing(bt->wstbrd, hclk, &err); + + return err; +} + +/** + * s3c2412_iotiming_debugfs - debugfs show io bank timing information + * @seq: The seq_file to write output to using seq_printf(). + * @cfg: The current configuration. + * @iob: The IO bank information to decode. +*/ +void s3c2412_iotiming_debugfs(struct seq_file *seq, + struct s3c_cpufreq_config *cfg, + union s3c_iobank *iob) +{ + struct s3c2412_iobank_timing *bt = iob->io_2412; + + seq_printf(seq, + "\tRead: idcy=%d.%d wstrd=%d.%d wstwr=%d,%d" + "wstoen=%d.%d wstwen=%d.%d wstbrd=%d.%d\n", + print_ns(bt->idcy), + print_ns(bt->wstrd), + print_ns(bt->wstwr), + print_ns(bt->wstoen), + print_ns(bt->wstwen), + print_ns(bt->wstbrd)); +} + +/** + * s3c2412_iotiming_calc - calculate all the bank divisor settings. + * @cfg: The current frequency configuration. + * @iot: The bank timing information. + * + * Calculate the timing information for all the banks that are + * configured as IO, using s3c2412_calc_bank(). + */ +int s3c2412_iotiming_calc(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot) +{ + struct s3c2412_iobank_timing *bt; + int bank; + int ret; + + for (bank = 0; bank < MAX_BANKS; bank++) { + bt = iot->bank[bank].io_2412; + if (!bt) + continue; + + ret = s3c2412_calc_bank(cfg, bt); + if (ret) { + printk(KERN_ERR "%s: cannot calculate bank %d io\n", + __func__, bank); + goto err; + } + } + + return 0; + err: + return ret; +} + +/** + * s3c2412_iotiming_set - set the timing information + * @cfg: The current frequency configuration. + * @iot: The bank timing information. + * + * Set the IO bank information from the details calculated earlier from + * calling s3c2412_iotiming_calc(). + */ +void s3c2412_iotiming_set(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *iot) +{ + struct s3c2412_iobank_timing *bt; + void __iomem *regs; + int bank; + + /* set the io timings from the specifier */ + + for (bank = 0; bank < MAX_BANKS; bank++) { + bt = iot->bank[bank].io_2412; + if (!bt) + continue; + + regs = S3C2412_SSMC_BANK(bank); + + __raw_writel(bt->smbidcyr, regs + SMBIDCYR); + __raw_writel(bt->smbwstrd, regs + SMBWSTRDR); + __raw_writel(bt->smbwstwr, regs + SMBWSTWRR); + __raw_writel(bt->smbwstoen, regs + SMBWSTOENR); + __raw_writel(bt->smbwstwen, regs + SMBWSTWENR); + __raw_writel(bt->smbwstbrd, regs + SMBWSTBRDR); + } +} + +static inline unsigned int s3c2412_decode_timing(unsigned int clock, u32 reg) +{ + return (reg & 0xf) * clock; +} + +static void s3c2412_iotiming_getbank(struct s3c_cpufreq_config *cfg, + struct s3c2412_iobank_timing *bt, + unsigned int bank) +{ + unsigned long clk = cfg->freq.hclk_tns; /* ssmc clock??? */ + void __iomem *regs = S3C2412_SSMC_BANK(bank); + + bt->idcy = s3c2412_decode_timing(clk, __raw_readl(regs + SMBIDCYR)); + bt->wstrd = s3c2412_decode_timing(clk, __raw_readl(regs + SMBWSTRDR)); + bt->wstoen = s3c2412_decode_timing(clk, __raw_readl(regs + SMBWSTOENR)); + bt->wstwen = s3c2412_decode_timing(clk, __raw_readl(regs + SMBWSTWENR)); + bt->wstbrd = s3c2412_decode_timing(clk, __raw_readl(regs + SMBWSTBRDR)); +} + +/** + * bank_is_io - return true if bank is (possibly) IO. + * @bank: The bank number. + * @bankcfg: The value of S3C2412_EBI_BANKCFG. + */ +static inline bool bank_is_io(unsigned int bank, u32 bankcfg) +{ + if (bank < 2) + return true; + + return !(bankcfg & (1 << bank)); +} + +int s3c2412_iotiming_get(struct s3c_cpufreq_config *cfg, + struct s3c_iotimings *timings) +{ + struct s3c2412_iobank_timing *bt; + u32 bankcfg = __raw_readl(S3C2412_EBI_BANKCFG); + unsigned int bank; + + /* look through all banks to see what is currently set. */ + + for (bank = 0; bank < MAX_BANKS; bank++) { + if (!bank_is_io(bank, bankcfg)) + continue; + + bt = kzalloc(sizeof(struct s3c2412_iobank_timing), GFP_KERNEL); + if (!bt) { + printk(KERN_ERR "%s: no memory for bank\n", __func__); + return -ENOMEM; + } + + timings->bank[bank].io_2412 = bt; + s3c2412_iotiming_getbank(cfg, bt, bank); + } + + s3c2412_print_timing("get", timings); + return 0; +} + +/* this is in here as it is so small, it doesn't currently warrant a file + * to itself. We expect that any s3c24xx needing this is going to also + * need the iotiming support. + */ +void s3c2412_cpufreq_setrefresh(struct s3c_cpufreq_config *cfg) +{ + struct s3c_cpufreq_board *board = cfg->board; + u32 refresh; + + WARN_ON(board == NULL); + + /* Reduce both the refresh time (in ns) and the frequency (in MHz) + * down to ensure that we do not overflow 32 bit numbers. + * + * This should work for HCLK up to 133MHz and refresh period up + * to 30usec. + */ + + refresh = (cfg->freq.hclk / 100) * (board->refresh / 10); + refresh = DIV_ROUND_UP(refresh, (1000 * 1000)); /* apply scale */ + refresh &= ((1 << 16) - 1); + + s3c_freq_dbg("%s: refresh value %u\n", __func__, (unsigned int)refresh); + + __raw_writel(refresh, S3C2412_REFRESH); +} diff --git a/arch/arm/plat-s3c24xx/s3c2443-clock.c b/arch/arm/plat-s3c24xx/s3c2443-clock.c new file mode 100644 index 00000000..82f2d4a3 --- /dev/null +++ b/arch/arm/plat-s3c24xx/s3c2443-clock.c @@ -0,0 +1,472 @@ +/* linux/arch/arm/plat-s3c24xx/s3c2443-clock.c + * + * Copyright (c) 2007, 2010 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2443 Clock control suport - common code + */ + +#include <linux/init.h> +#include <linux/clk.h> +#include <linux/io.h> + +#include <mach/regs-s3c2443-clock.h> + +#include <plat/s3c2443.h> +#include <plat/clock.h> +#include <plat/clock-clksrc.h> +#include <plat/cpu.h> + +#include <plat/cpu-freq.h> + + +static int s3c2443_gate(void __iomem *reg, struct clk *clk, int enable) +{ + u32 ctrlbit = clk->ctrlbit; + u32 con = __raw_readl(reg); + + if (enable) + con |= ctrlbit; + else + con &= ~ctrlbit; + + __raw_writel(con, reg); + return 0; +} + +int s3c2443_clkcon_enable_h(struct clk *clk, int enable) +{ + return s3c2443_gate(S3C2443_HCLKCON, clk, enable); +} + +int s3c2443_clkcon_enable_p(struct clk *clk, int enable) +{ + return s3c2443_gate(S3C2443_PCLKCON, clk, enable); +} + +int s3c2443_clkcon_enable_s(struct clk *clk, int enable) +{ + return s3c2443_gate(S3C2443_SCLKCON, clk, enable); +} + +/* mpllref is a direct descendant of clk_xtal by default, but it is not + * elided as the EPLL can be either sourced by the XTAL or EXTCLK and as + * such directly equating the two source clocks is impossible. + */ +struct clk clk_mpllref = { + .name = "mpllref", + .parent = &clk_xtal, + .id = -1, +}; + +static struct clk *clk_epllref_sources[] = { + [0] = &clk_mpllref, + [1] = &clk_mpllref, + [2] = &clk_xtal, + [3] = &clk_ext, +}; + +struct clksrc_clk clk_epllref = { + .clk = { + .name = "epllref", + .id = -1, + }, + .sources = &(struct clksrc_sources) { + .sources = clk_epllref_sources, + .nr_sources = ARRAY_SIZE(clk_epllref_sources), + }, + .reg_src = { .reg = S3C2443_CLKSRC, .size = 2, .shift = 7 }, +}; + +/* esysclk + * + * this is sourced from either the EPLL or the EPLLref clock +*/ + +static struct clk *clk_sysclk_sources[] = { + [0] = &clk_epllref.clk, + [1] = &clk_epll, +}; + +struct clksrc_clk clk_esysclk = { + .clk = { + .name = "esysclk", + .parent = &clk_epll, + .id = -1, + }, + .sources = &(struct clksrc_sources) { + .sources = clk_sysclk_sources, + .nr_sources = ARRAY_SIZE(clk_sysclk_sources), + }, + .reg_src = { .reg = S3C2443_CLKSRC, .size = 1, .shift = 6 }, +}; + +static unsigned long s3c2443_getrate_mdivclk(struct clk *clk) +{ + unsigned long parent_rate = clk_get_rate(clk->parent); + unsigned long div = __raw_readl(S3C2443_CLKDIV0); + + div &= S3C2443_CLKDIV0_EXTDIV_MASK; + div >>= (S3C2443_CLKDIV0_EXTDIV_SHIFT-1); /* x2 */ + + return parent_rate / (div + 1); +} + +static struct clk clk_mdivclk = { + .name = "mdivclk", + .parent = &clk_mpllref, + .id = -1, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_getrate_mdivclk, + }, +}; + +static struct clk *clk_msysclk_sources[] = { + [0] = &clk_mpllref, + [1] = &clk_mpll, + [2] = &clk_mdivclk, + [3] = &clk_mpllref, +}; + +struct clksrc_clk clk_msysclk = { + .clk = { + .name = "msysclk", + .parent = &clk_xtal, + .id = -1, + }, + .sources = &(struct clksrc_sources) { + .sources = clk_msysclk_sources, + .nr_sources = ARRAY_SIZE(clk_msysclk_sources), + }, + .reg_src = { .reg = S3C2443_CLKSRC, .size = 2, .shift = 3 }, +}; + +/* prediv + * + * this divides the msysclk down to pass to h/p/etc. + */ + +static unsigned long s3c2443_prediv_getrate(struct clk *clk) +{ + unsigned long rate = clk_get_rate(clk->parent); + unsigned long clkdiv0 = __raw_readl(S3C2443_CLKDIV0); + + clkdiv0 &= S3C2443_CLKDIV0_PREDIV_MASK; + clkdiv0 >>= S3C2443_CLKDIV0_PREDIV_SHIFT; + + return rate / (clkdiv0 + 1); +} + +static struct clk clk_prediv = { + .name = "prediv", + .id = -1, + .parent = &clk_msysclk.clk, + .ops = &(struct clk_ops) { + .get_rate = s3c2443_prediv_getrate, + }, +}; + +/* usbhost + * + * usb host bus-clock, usually 48MHz to provide USB bus clock timing +*/ + +static struct clksrc_clk clk_usb_bus_host = { + .clk = { + .name = "usb-bus-host-parent", + .id = -1, + .parent = &clk_esysclk.clk, + .ctrlbit = S3C2443_SCLKCON_USBHOST, + .enable = s3c2443_clkcon_enable_s, + }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 2, .shift = 4 }, +}; + +/* common clksrc clocks */ + +static struct clksrc_clk clksrc_clks[] = { + { + /* ART baud-rate clock sourced from esysclk via a divisor */ + .clk = { + .name = "uartclk", + .id = -1, + .parent = &clk_esysclk.clk, + }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 4, .shift = 8 }, + }, { + /* camera interface bus-clock, divided down from esysclk */ + .clk = { + .name = "camif-upll", /* same as 2440 name */ + .id = -1, + .parent = &clk_esysclk.clk, + .ctrlbit = S3C2443_SCLKCON_CAMCLK, + .enable = s3c2443_clkcon_enable_s, + }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 4, .shift = 26 }, + }, { + .clk = { + .name = "display-if", + .id = -1, + .parent = &clk_esysclk.clk, + .ctrlbit = S3C2443_SCLKCON_DISPCLK, + .enable = s3c2443_clkcon_enable_s, + }, + .reg_div = { .reg = S3C2443_CLKDIV1, .size = 8, .shift = 16 }, + }, +}; + + +static struct clk init_clocks_off[] = { + { + .name = "adc", + .id = -1, + .parent = &clk_p, + .enable = s3c2443_clkcon_enable_p, + .ctrlbit = S3C2443_PCLKCON_ADC, + }, { + .name = "i2c", + .id = -1, + .parent = &clk_p, + .enable = s3c2443_clkcon_enable_p, + .ctrlbit = S3C2443_PCLKCON_IIC, + } +}; + +static struct clk init_clocks[] = { + { + .name = "dma", + .id = 0, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_DMA0, + }, { + .name = "dma", + .id = 1, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_DMA1, + }, { + .name = "dma", + .id = 2, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_DMA2, + }, { + .name = "dma", + .id = 3, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_DMA3, + }, { + .name = "dma", + .id = 4, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_DMA4, + }, { + .name = "dma", + .id = 5, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_DMA5, + }, { + .name = "hsmmc", + .id = 1, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_HSMMC, + }, { + .name = "gpio", + .id = -1, + .parent = &clk_p, + .enable = s3c2443_clkcon_enable_p, + .ctrlbit = S3C2443_PCLKCON_GPIO, + }, { + .name = "usb-host", + .id = -1, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_USBH, + }, { + .name = "usb-device", + .id = -1, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_USBD, + }, { + .name = "lcd", + .id = -1, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_LCDC, + + }, { + .name = "timers", + .id = -1, + .parent = &clk_p, + .enable = s3c2443_clkcon_enable_p, + .ctrlbit = S3C2443_PCLKCON_PWMT, + }, { + .name = "cfc", + .id = -1, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_CFC, + }, { + .name = "ssmc", + .id = -1, + .parent = &clk_h, + .enable = s3c2443_clkcon_enable_h, + .ctrlbit = S3C2443_HCLKCON_SSMC, + }, { + .name = "uart", + .id = 0, + .parent = &clk_p, + .enable = s3c2443_clkcon_enable_p, + .ctrlbit = S3C2443_PCLKCON_UART0, + }, { + .name = "uart", + .id = 1, + .parent = &clk_p, + .enable = s3c2443_clkcon_enable_p, + .ctrlbit = S3C2443_PCLKCON_UART1, + }, { + .name = "uart", + .id = 2, + .parent = &clk_p, + .enable = s3c2443_clkcon_enable_p, + .ctrlbit = S3C2443_PCLKCON_UART2, + }, { + .name = "uart", + .id = 3, + .parent = &clk_p, + .enable = s3c2443_clkcon_enable_p, + .ctrlbit = S3C2443_PCLKCON_UART3, + }, { + .name = "rtc", + .id = -1, + .parent = &clk_p, + .enable = s3c2443_clkcon_enable_p, + .ctrlbit = S3C2443_PCLKCON_RTC, + }, { + .name = "watchdog", + .id = -1, + .parent = &clk_p, + .ctrlbit = S3C2443_PCLKCON_WDT, + }, { + .name = "ac97", + .id = -1, + .parent = &clk_p, + .ctrlbit = S3C2443_PCLKCON_AC97, + }, { + .name = "nand", + .id = -1, + .parent = &clk_h, + }, { + .name = "usb-bus-host", + .id = -1, + .parent = &clk_usb_bus_host.clk, + } +}; + +static inline unsigned long s3c2443_get_hdiv(unsigned long clkcon0) +{ + clkcon0 &= S3C2443_CLKDIV0_HCLKDIV_MASK; + + return clkcon0 + 1; +} + +/* EPLLCON compatible enough to get on/off information */ + +void __init_or_cpufreq s3c2443_common_setup_clocks(pll_fn get_mpll, + fdiv_fn get_fdiv) +{ + unsigned long epllcon = __raw_readl(S3C2443_EPLLCON); + unsigned long mpllcon = __raw_readl(S3C2443_MPLLCON); + unsigned long clkdiv0 = __raw_readl(S3C2443_CLKDIV0); + struct clk *xtal_clk; + unsigned long xtal; + unsigned long pll; + unsigned long fclk; + unsigned long hclk; + unsigned long pclk; + int ptr; + + xtal_clk = clk_get(NULL, "xtal"); + xtal = clk_get_rate(xtal_clk); + clk_put(xtal_clk); + + pll = get_mpll(mpllcon, xtal); + clk_msysclk.clk.rate = pll; + + fclk = pll / get_fdiv(clkdiv0); + hclk = s3c2443_prediv_getrate(&clk_prediv); + hclk /= s3c2443_get_hdiv(clkdiv0); + pclk = hclk / ((clkdiv0 & S3C2443_CLKDIV0_HALF_PCLK) ? 2 : 1); + + s3c24xx_setup_clocks(fclk, hclk, pclk); + + printk("CPU: MPLL %s %ld.%03ld MHz, cpu %ld.%03ld MHz, mem %ld.%03ld MHz, pclk %ld.%03ld MHz\n", + (mpllcon & S3C2443_PLLCON_OFF) ? "off":"on", + print_mhz(pll), print_mhz(fclk), + print_mhz(hclk), print_mhz(pclk)); + + for (ptr = 0; ptr < ARRAY_SIZE(clksrc_clks); ptr++) + s3c_set_clksrc(&clksrc_clks[ptr], true); + + /* ensure usb bus clock is within correct rate of 48MHz */ + + if (clk_get_rate(&clk_usb_bus_host.clk) != (48 * 1000 * 1000)) { + printk(KERN_INFO "Warning: USB host bus not at 48MHz\n"); + clk_set_rate(&clk_usb_bus_host.clk, 48*1000*1000); + } + + printk("CPU: EPLL %s %ld.%03ld MHz, usb-bus %ld.%03ld MHz\n", + (epllcon & S3C2443_PLLCON_OFF) ? "off":"on", + print_mhz(clk_get_rate(&clk_epll)), + print_mhz(clk_get_rate(&clk_usb_bus))); +} + +static struct clk *clks[] __initdata = { + &clk_prediv, + &clk_mpllref, + &clk_mdivclk, + &clk_ext, + &clk_epll, + &clk_usb_bus, +}; + +static struct clksrc_clk *clksrcs[] __initdata = { + &clk_usb_bus_host, + &clk_epllref, + &clk_esysclk, + &clk_msysclk, +}; + +void __init s3c2443_common_init_clocks(int xtal, pll_fn get_mpll, + fdiv_fn get_fdiv) +{ + int ptr; + + /* s3c2443 parents h and p clocks from prediv */ + clk_h.parent = &clk_prediv; + clk_p.parent = &clk_prediv; + + clk_usb_bus.parent = &clk_usb_bus_host.clk; + clk_epll.parent = &clk_epllref.clk; + + s3c24xx_register_baseclocks(xtal); + s3c24xx_register_clocks(clks, ARRAY_SIZE(clks)); + + for (ptr = 0; ptr < ARRAY_SIZE(clksrcs); ptr++) + s3c_register_clksrc(clksrcs[ptr], 1); + + s3c_register_clksrc(clksrc_clks, ARRAY_SIZE(clksrc_clks)); + s3c_register_clocks(init_clocks, ARRAY_SIZE(init_clocks)); + + /* See s3c2443/etc notes on disabling clocks at init time */ + s3c_register_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off)); + s3c_disable_clocks(init_clocks_off, ARRAY_SIZE(init_clocks_off)); + + s3c2443_common_setup_clocks(get_mpll, get_fdiv); +} diff --git a/arch/arm/plat-s3c24xx/setup-i2c.c b/arch/arm/plat-s3c24xx/setup-i2c.c new file mode 100644 index 00000000..9e90a7cb --- /dev/null +++ b/arch/arm/plat-s3c24xx/setup-i2c.c @@ -0,0 +1,27 @@ +/* linux/arch/arm/plat-s3c24xx/setup-i2c.c + * + * Copyright 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX Base setup for i2c device + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/kernel.h> +#include <linux/gpio.h> + +struct platform_device; + +#include <plat/gpio-cfg.h> +#include <plat/iic.h> +#include <mach/hardware.h> +#include <mach/regs-gpio.h> + +void s3c_i2c0_cfg_gpio(struct platform_device *dev) +{ + s3c_gpio_cfgpin(S3C2410_GPE(15), S3C2410_GPE15_IICSDA); + s3c_gpio_cfgpin(S3C2410_GPE(14), S3C2410_GPE14_IICSCL); +} diff --git a/arch/arm/plat-s3c24xx/setup-ts.c b/arch/arm/plat-s3c24xx/setup-ts.c new file mode 100644 index 00000000..ed263866 --- /dev/null +++ b/arch/arm/plat-s3c24xx/setup-ts.c @@ -0,0 +1,34 @@ +/* linux/arch/arm/plat-s3c24xx/setup-ts.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * Based on S3C24XX setup for i2c device + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/kernel.h> +#include <linux/gpio.h> + +struct platform_device; /* don't need the contents */ + +#include <mach/hardware.h> +#include <mach/regs-gpio.h> + +/** + * s3c24xx_ts_cfg_gpio - configure gpio for s3c2410 systems + * + * Configure the GPIO for the S3C2410 system, where we have external FETs + * connected to the device (later systems such as the S3C2440 integrate + * these into the device). + */ +void s3c24xx_ts_cfg_gpio(struct platform_device *dev) +{ + s3c2410_gpio_cfgpin(S3C2410_GPG(12), S3C2410_GPG12_XMON); + s3c2410_gpio_cfgpin(S3C2410_GPG(13), S3C2410_GPG13_nXPON); + s3c2410_gpio_cfgpin(S3C2410_GPG(14), S3C2410_GPG14_YMON); + s3c2410_gpio_cfgpin(S3C2410_GPG(15), S3C2410_GPG15_nYPON); +} diff --git a/arch/arm/plat-s3c24xx/simtec-audio.c b/arch/arm/plat-s3c24xx/simtec-audio.c new file mode 100644 index 00000000..6bc832e0 --- /dev/null +++ b/arch/arm/plat-s3c24xx/simtec-audio.c @@ -0,0 +1,77 @@ +/* linux/arch/arm/plat-s3c24xx/simtec-audio.c + * + * Copyright (c) 2009 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * Audio setup for various Simtec S3C24XX implementations + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/kernel.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <linux/device.h> +#include <linux/io.h> + +#include <mach/bast-map.h> +#include <mach/bast-irq.h> +#include <mach/bast-cpld.h> + +#include <mach/hardware.h> +#include <mach/regs-gpio.h> + +#include <plat/audio-simtec.h> +#include <plat/devs.h> + +/* platform ops for audio */ + +static void simtec_audio_startup_lrroute(void) +{ + unsigned int tmp; + unsigned long flags; + + local_irq_save(flags); + + tmp = __raw_readb(BAST_VA_CTRL1); + tmp &= ~BAST_CPLD_CTRL1_LRMASK; + tmp |= BAST_CPLD_CTRL1_LRCDAC; + __raw_writeb(tmp, BAST_VA_CTRL1); + + local_irq_restore(flags); +} + +static struct s3c24xx_audio_simtec_pdata simtec_audio_platdata; +static char our_name[32]; + +static struct platform_device simtec_audio_dev = { + .name = our_name, + .id = -1, + .dev = { + .parent = &s3c_device_iis.dev, + .platform_data = &simtec_audio_platdata, + }, +}; + +int __init simtec_audio_add(const char *name, bool has_lr_routing, + struct s3c24xx_audio_simtec_pdata *spd) +{ + if (!name) + name = "tlv320aic23"; + + snprintf(our_name, sizeof(our_name)-1, "s3c24xx-simtec-%s", name); + + /* copy platform data so the source can be __initdata */ + if (spd) + simtec_audio_platdata = *spd; + + if (has_lr_routing) + simtec_audio_platdata.startup = simtec_audio_startup_lrroute; + + platform_device_register(&s3c_device_iis); + platform_device_register(&simtec_audio_dev); + return 0; +} diff --git a/arch/arm/plat-s3c24xx/sleep.S b/arch/arm/plat-s3c24xx/sleep.S new file mode 100644 index 00000000..fd7032f8 --- /dev/null +++ b/arch/arm/plat-s3c24xx/sleep.S @@ -0,0 +1,109 @@ +/* linux/arch/arm/plat-s3c24xx/sleep.S + * + * Copyright (c) 2004 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2410 Power Manager (Suspend-To-RAM) support + * + * Based on PXA/SA1100 sleep code by: + * Nicolas Pitre, (c) 2002 Monta Vista Software Inc + * Cliff Brake, (c) 2001 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <linux/linkage.h> +#include <asm/assembler.h> +#include <mach/hardware.h> +#include <mach/map.h> + +#include <mach/regs-gpio.h> +#include <mach/regs-clock.h> +#include <mach/regs-mem.h> +#include <plat/regs-serial.h> + +/* CONFIG_DEBUG_RESUME is dangerous if your bootloader does not + * reset the UART configuration, only enable if you really need this! +*/ +//#define CONFIG_DEBUG_RESUME + + .text + + /* s3c_cpu_save + * + * entry: + * r1 = v:p offset + */ + +ENTRY(s3c_cpu_save) + stmfd sp!, { r4 - r12, lr } + ldr r3, =resume_with_mmu + bl cpu_suspend + + @@ jump to final code to send system to sleep + ldr r0, =pm_cpu_sleep + @@ldr pc, [ r0 ] + ldr r0, [ r0 ] + mov pc, r0 + + @@ return to the caller, after having the MMU + @@ turned on, this restores the last bits from the + @@ stack +resume_with_mmu: + ldmfd sp!, { r4 - r12, pc } + + .ltorg + + /* sleep magic, to allow the bootloader to check for an valid + * image to resume to. Must be the first word before the + * s3c_cpu_resume entry. + */ + + .word 0x2bedf00d + + /* s3c_cpu_resume + * + * resume code entry for bootloader to call + */ + +ENTRY(s3c_cpu_resume) + mov r0, #PSR_I_BIT | PSR_F_BIT | SVC_MODE + msr cpsr_c, r0 + + @@ load UART to allow us to print the two characters for + @@ resume debug + + mov r2, #S3C24XX_PA_UART & 0xff000000 + orr r2, r2, #S3C24XX_PA_UART & 0xff000 + +#if 0 + /* SMDK2440 LED set */ + mov r14, #S3C24XX_PA_GPIO + ldr r12, [ r14, #0x54 ] + bic r12, r12, #3<<4 + orr r12, r12, #1<<7 + str r12, [ r14, #0x54 ] +#endif + +#ifdef CONFIG_DEBUG_RESUME + mov r3, #'L' + strb r3, [ r2, #S3C2410_UTXH ] +1001: + ldrb r14, [ r3, #S3C2410_UTRSTAT ] + tst r14, #S3C2410_UTRSTAT_TXE + beq 1001b +#endif /* CONFIG_DEBUG_RESUME */ + + b cpu_resume diff --git a/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c b/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c new file mode 100644 index 00000000..704175b0 --- /dev/null +++ b/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c @@ -0,0 +1,36 @@ +/* linux/arch/arm/plat-s3c24xx/spi-bus0-gpe11_12_13.c + * + * Copyright (c) 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX SPI - gpio configuration for bus 0 on gpe11,12,13 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. +*/ + +#include <linux/kernel.h> +#include <linux/gpio.h> + +#include <mach/spi.h> +#include <mach/regs-gpio.h> + +void s3c24xx_spi_gpiocfg_bus0_gpe11_12_13(struct s3c2410_spi_info *spi, + int enable) +{ + if (enable) { + s3c_gpio_cfgpin(S3C2410_GPE(13), S3C2410_GPE13_SPICLK0); + s3c_gpio_cfgpin(S3C2410_GPE(12), S3C2410_GPE12_SPIMOSI0); + s3c_gpio_cfgpin(S3C2410_GPE(11), S3C2410_GPE11_SPIMISO0); + s3c2410_gpio_pullup(S3C2410_GPE(11), 0); + s3c2410_gpio_pullup(S3C2410_GPE(13), 0); + } else { + s3c_gpio_cfgpin(S3C2410_GPE(13), S3C2410_GPIO_INPUT); + s3c_gpio_cfgpin(S3C2410_GPE(11), S3C2410_GPIO_INPUT); + s3c_gpio_setpull(S3C2410_GPE(11), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPE(12), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPE(13), S3C_GPIO_PULL_NONE); + } +} diff --git a/arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c b/arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c new file mode 100644 index 00000000..72457afd --- /dev/null +++ b/arch/arm/plat-s3c24xx/spi-bus1-gpd8_9_10.c @@ -0,0 +1,38 @@ +/* linux/arch/arm/plat-s3c24xx/spi-bus0-gpd8_9_10.c + * + * Copyright (c) 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX SPI - gpio configuration for bus 1 on gpd8,9,10 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. +*/ + +#include <linux/kernel.h> +#include <linux/gpio.h> + +#include <mach/spi.h> +#include <mach/regs-gpio.h> + +void s3c24xx_spi_gpiocfg_bus1_gpd8_9_10(struct s3c2410_spi_info *spi, + int enable) +{ + + printk(KERN_INFO "%s(%d)\n", __func__, enable); + if (enable) { + s3c_gpio_cfgpin(S3C2410_GPD(10), S3C2440_GPD10_SPICLK1); + s3c_gpio_cfgpin(S3C2410_GPD(9), S3C2440_GPD9_SPIMOSI1); + s3c_gpio_cfgpin(S3C2410_GPD(8), S3C2440_GPD8_SPIMISO1); + s3c2410_gpio_pullup(S3C2410_GPD(10), 0); + s3c2410_gpio_pullup(S3C2410_GPD(9), 0); + } else { + s3c_gpio_cfgpin(S3C2410_GPD(8), S3C2410_GPIO_INPUT); + s3c_gpio_cfgpin(S3C2410_GPD(9), S3C2410_GPIO_INPUT); + s3c_gpio_setpull(S3C2410_GPD(10), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPD(9), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPD(8), S3C_GPIO_PULL_NONE); + } +} diff --git a/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c b/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c new file mode 100644 index 00000000..c3972b64 --- /dev/null +++ b/arch/arm/plat-s3c24xx/spi-bus1-gpg5_6_7.c @@ -0,0 +1,36 @@ +/* linux/arch/arm/plat-s3c24xx/spi-bus0-gpg5_6_7.c + * + * Copyright (c) 2008 Simtec Electronics + * http://armlinux.simtec.co.uk/ + * Ben Dooks <ben@simtec.co.uk> + * + * S3C24XX SPI - gpio configuration for bus 1 on gpg5,6,7 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License. +*/ + +#include <linux/kernel.h> +#include <linux/gpio.h> + +#include <mach/spi.h> +#include <mach/regs-gpio.h> + +void s3c24xx_spi_gpiocfg_bus1_gpg5_6_7(struct s3c2410_spi_info *spi, + int enable) +{ + if (enable) { + s3c_gpio_cfgpin(S3C2410_GPG(7), S3C2410_GPG7_SPICLK1); + s3c_gpio_cfgpin(S3C2410_GPG(6), S3C2410_GPG6_SPIMOSI1); + s3c_gpio_cfgpin(S3C2410_GPG(5), S3C2410_GPG5_SPIMISO1); + s3c2410_gpio_pullup(S3C2410_GPG(5), 0); + s3c2410_gpio_pullup(S3C2410_GPG(6), 0); + } else { + s3c_gpio_cfgpin(S3C2410_GPG(7), S3C2410_GPIO_INPUT); + s3c_gpio_cfgpin(S3C2410_GPG(5), S3C2410_GPIO_INPUT); + s3c_gpio_setpull(S3C2410_GPG(5), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPG(6), S3C_GPIO_PULL_NONE); + s3c_gpio_setpull(S3C2410_GPG(7), S3C_GPIO_PULL_NONE); + } +} |