diff options
Diffstat (limited to 'target/linux/adm8668/files/arch/mips')
6 files changed, 146 insertions, 653 deletions
diff --git a/target/linux/adm8668/files/arch/mips/adm8668/Kconfig b/target/linux/adm8668/files/arch/mips/adm8668/Kconfig new file mode 100644 index 0000000000..2e7281ff0a --- /dev/null +++ b/target/linux/adm8668/files/arch/mips/adm8668/Kconfig @@ -0,0 +1,2 @@ +config ARM_AMBA + def_bool y diff --git a/target/linux/adm8668/files/arch/mips/adm8668/Makefile b/target/linux/adm8668/files/arch/mips/adm8668/Makefile index dbd3f12d11..ed45666194 100644 --- a/target/linux/adm8668/files/arch/mips/adm8668/Makefile +++ b/target/linux/adm8668/files/arch/mips/adm8668/Makefile @@ -2,6 +2,6 @@ # something witty --neutronscott # -obj-y := irq.o pci.o prom.o platform.o serial.o proc.o \ - setup.o time.o early_printk.o \ +obj-y := irq.o pci.o prom.o platform.o proc.o \ + setup.o time.o early_printk.o clock.o \ net_core.o net_intr.o diff --git a/target/linux/adm8668/files/arch/mips/adm8668/clock.c b/target/linux/adm8668/files/arch/mips/adm8668/clock.c new file mode 100644 index 0000000000..96d139e177 --- /dev/null +++ b/target/linux/adm8668/files/arch/mips/adm8668/clock.c @@ -0,0 +1,56 @@ +/* + * ADM8668 minimal clock support + * + * Copyright (C) 2012, Florian Fainelli <florian@openwrt.org> + * + * Licensed under the terms of the GPLv2 + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/clk.h> + +#include <adm8668.h> + +struct clk { + unsigned long rate; +}; + +static struct clk uart_clk = { + .rate = ADM8668_UARTCLK_FREQ, +}; + +struct clk *clk_get(struct device *dev, const char *id) +{ + const char *name = dev_name(dev); + + if (!strcmp(name, "apb:uart0")) + return &uart_clk; + + return ERR_PTR(-ENOENT); +} +EXPORT_SYMBOL(clk_get); + +int clk_enable(struct clk *clk) +{ + return 0; +} +EXPORT_SYMBOL(clk_enable); + +void clk_disable(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_disable); + +unsigned long clk_get_rate(struct clk *clk) +{ + return clk->rate; +} +EXPORT_SYMBOL(clk_get_rate); + +void clk_put(struct clk *clk) +{ +} +EXPORT_SYMBOL(clk_put); diff --git a/target/linux/adm8668/files/arch/mips/adm8668/platform.c b/target/linux/adm8668/files/arch/mips/adm8668/platform.c index 4c158dd749..5030565a2c 100644 --- a/target/linux/adm8668/files/arch/mips/adm8668/platform.c +++ b/target/linux/adm8668/files/arch/mips/adm8668/platform.c @@ -1,5 +1,6 @@ /* * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us> + * Copyright (C) 2012 Florian Fainelli <florian@openwrt.org> * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive @@ -13,6 +14,9 @@ #include <linux/pci.h> #include <linux/slab.h> #include <linux/ioport.h> +#include <linux/amba/bus.h> +#include <linux/amba/serial.h> + #include <asm/reboot.h> #include <asm/time.h> #include <asm/addrspace.h> @@ -20,23 +24,31 @@ #include <asm/io.h> #include <adm8668.h> -static struct resource uart_resources[] = { - { +static void adm8668_uart_set_mctrl(struct amba_device *dev, + void __iomem *base, + unsigned int mcrtl) +{ +} + +static struct amba_pl010_data adm8668_uart0_data = { + .set_mctrl = adm8668_uart_set_mctrl, +}; + +static struct amba_device adm8668_uart0_device = { + .dev = { + .init_name = "apb:uart0", + .platform_data = &adm8668_uart0_data, + }, + .res = { .start = ADM8668_UART0_BASE, .end = ADM8668_UART0_BASE + 0xF, .flags = IORESOURCE_MEM, }, - { - .start = INT_LVL_UART0, - .flags = IORESOURCE_IRQ, + .irq = { + INT_LVL_UART0, + -1 }, -}; - -static struct platform_device adm8668_uart_device = { - .name = "adm8668_uart", - .id = 0, - .resource = uart_resources, - .num_resources = ARRAY_SIZE(uart_resources), + .periphid = 0x0041010, }; static struct resource eth0_resources[] = { @@ -78,13 +90,18 @@ static struct platform_device adm8668_eth1_device = { }; static struct platform_device *adm8668_devs[] = { - &adm8668_uart_device, &adm8668_eth0_device, &adm8668_eth1_device, }; int __devinit adm8668_devs_register(void) { + int ret; + + ret = amba_device_register(&adm8668_uart0_device, &iomem_resource); + if (ret) + panic("failed to register AMBA UART"); + return platform_add_devices(adm8668_devs, ARRAY_SIZE(adm8668_devs)); } arch_initcall(adm8668_devs_register); diff --git a/target/linux/adm8668/files/arch/mips/adm8668/serial.c b/target/linux/adm8668/files/arch/mips/adm8668/serial.c deleted file mode 100644 index 7d684b8102..0000000000 --- a/target/linux/adm8668/files/arch/mips/adm8668/serial.c +++ /dev/null @@ -1,638 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * ADM8668 serial driver, totally ripped the source from BCM63xx and changed - * all the registers to fit our hardware, and removed all the features that - * I didn't know because our GPL'd serial driver was way lame. - * - * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us> - * Derived directly from bcm63xx_uart - * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> - * - */ - -#if defined(CONFIG_SERIAL_ADM8668_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) -#define SUPPORT_SYSRQ -#endif - -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/module.h> -#include <linux/console.h> -#include <linux/clk.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/sysrq.h> -#include <linux/serial.h> -#include <linux/serial_core.h> -#include <adm8668.h> - -#define ADM8668_NR_UARTS 1 - -static struct uart_port ports[ADM8668_NR_UARTS]; - -/* - * handy uart register accessor - */ -static inline unsigned int adm_uart_readl(struct uart_port *port, - unsigned int offset) -{ - return (*(volatile unsigned int *)(port->membase + offset)); -} - -static inline void adm_uart_writel(struct uart_port *port, - unsigned int value, unsigned int offset) -{ - (*((volatile unsigned int *)(port->membase + offset))) = value; -} - -/* - * serial core request to check if uart tx fifo is empty - */ -static unsigned int adm_uart_tx_empty(struct uart_port *port) -{ - /* we always wait for completion, no buffer is made... */ - return 1; -} - -/* - * serial core request to set RTS and DTR pin state and loopback mode - */ -static void adm_uart_set_mctrl(struct uart_port *port, unsigned int mctrl) -{ -} - -/* - * serial core request to return RI, CTS, DCD and DSR pin state - */ -static unsigned int adm_uart_get_mctrl(struct uart_port *port) -{ - return 0; -} - -/* - * serial core request to disable tx ASAP (used for flow control) - */ -static void adm_uart_stop_tx(struct uart_port *port) -{ - unsigned int val; - - val = adm_uart_readl(port, UART_CR_REG); - val &= ~(UART_TX_INT_EN); - adm_uart_writel(port, val, UART_CR_REG); -} - -/* - * serial core request to (re)enable tx - */ -static void adm_uart_start_tx(struct uart_port *port) -{ - unsigned int val; - - val = adm_uart_readl(port, UART_CR_REG); - val |= UART_TX_INT_EN; - adm_uart_writel(port, val, UART_CR_REG); -} - -/* - * serial core request to stop rx, called before port shutdown - */ -static void adm_uart_stop_rx(struct uart_port *port) -{ - unsigned int val; - - val = adm_uart_readl(port, UART_CR_REG); - val &= ~UART_RX_INT_EN; - adm_uart_writel(port, val, UART_CR_REG); -} - -/* - * serial core request to enable modem status interrupt reporting - */ -static void adm_uart_enable_ms(struct uart_port *port) -{ -} - -/* - * serial core request to start/stop emitting break char - */ -static void adm_uart_break_ctl(struct uart_port *port, int ctl) -{ -} - -/* - * return port type in string format - */ -static const char *adm_uart_type(struct uart_port *port) -{ - return (port->type == PORT_ADM8668) ? "adm8668_uart" : NULL; -} - -/* - * read all chars in rx fifo and send them to core - */ -static void adm_uart_do_rx(struct uart_port *port) -{ - struct tty_struct *tty; - unsigned int max_count; - - /* limit number of char read in interrupt, should not be - * higher than fifo size anyway since we're much faster than - * serial port */ - max_count = 32; - tty = port->state->port.tty; - do { - unsigned int iestat, c, cstat; - char flag; - - /* get overrun/fifo empty information from ier - * register */ - iestat = adm_uart_readl(port, UART_FR_REG); - if (iestat & UART_RX_FIFO_EMPTY) - break; - - /* recieve status */ - cstat = adm_uart_readl(port, UART_RSR_REG); - /* clear errors */ - adm_uart_writel(port, cstat, UART_RSR_REG); - - c = adm_uart_readl(port, UART_DR_REG); - port->icount.rx++; - flag = TTY_NORMAL; - - if (unlikely((cstat & UART_RX_STATUS_MASK))) { - /* do stats first */ - if (cstat & UART_BREAK_ERR) { - port->icount.brk++; - if (uart_handle_break(port)) - continue; - } - - if (cstat & UART_PARITY_ERR) - port->icount.parity++; - if (cstat & UART_FRAMING_ERR) - port->icount.frame++; - if (cstat & UART_OVERRUN_ERR) { - port->icount.overrun++; - tty_insert_flip_char(tty, 0, TTY_OVERRUN); - } - - /* update flag wrt read_status_mask */ - cstat &= port->read_status_mask; - if (cstat & UART_BREAK_ERR) - flag = TTY_BREAK; - if (cstat & UART_FRAMING_ERR) - flag = TTY_FRAME; - if (cstat & UART_PARITY_ERR) - flag = TTY_PARITY; - } - - if (uart_handle_sysrq_char(port, c)) - continue; - - /* fixthis */ - if ((cstat & port->ignore_status_mask) == 0) - tty_insert_flip_char(tty, c, flag); - } while (max_count--); - - tty_flip_buffer_push(tty); -} - -/* - * fill tx fifo with chars to send, stop when fifo is about to be full - * or when all chars have been sent. - */ -static void adm_uart_do_tx(struct uart_port *port) -{ - struct circ_buf *xmit; - - if (port->x_char) { - adm_uart_writel(port, port->x_char, UART_DR_REG); - port->icount.tx++; - port->x_char = 0; - return; - } - - if (uart_tx_stopped(port)) - adm_uart_stop_tx(port); - - xmit = &port->state->xmit; - - if (uart_circ_empty(xmit)) - goto txq_empty; - do - { - while ((adm_uart_readl(port, UART_FR_REG) & UART_TX_FIFO_FULL) != 0) - ; - adm_uart_writel(port, xmit->buf[xmit->tail], UART_DR_REG); - xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1); - port->icount.tx++; - if (uart_circ_empty(xmit)) - break; - } while (1); - - if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) - uart_write_wakeup(port); - - if (uart_circ_empty(xmit)) - goto txq_empty; - - return; - -txq_empty: - adm_uart_stop_tx(port); -} - -/* - * process uart interrupt - */ -static irqreturn_t adm_uart_interrupt(int irq, void *dev_id) -{ - struct uart_port *port; - unsigned int irqstat; - - port = dev_id; - spin_lock(&port->lock); - - irqstat = adm_uart_readl(port, UART_IIR_REG); - - if (irqstat & (UART_RX_INT|UART_RX_TIMEOUT_INT)) { - adm_uart_do_rx(port); - } - - if (irqstat & UART_TX_INT) { - adm_uart_do_tx(port); - } - spin_unlock(&port->lock); - return IRQ_HANDLED; -} - -/* - * enable rx & tx operation on uart - */ -static void adm_uart_enable(struct uart_port *port) -{ - unsigned int val; - - val = adm_uart_readl(port, UART_CR_REG); - // BREAK_INT too - val |= (UART_RX_INT_EN | UART_RX_TIMEOUT_INT_EN); - adm_uart_writel(port, val, UART_CR_REG); -} - -/* - * disable rx & tx operation on uart - */ -static void adm_uart_disable(struct uart_port *port) -{ - unsigned int val; - - val = adm_uart_readl(port, UART_CR_REG); - val &= ~(UART_TX_INT_EN | UART_RX_INT_EN | UART_RX_TIMEOUT_INT_EN); - adm_uart_writel(port, val, UART_CR_REG); -} - -/* - * clear all unread data in rx fifo and unsent data in tx fifo - */ -static void adm_uart_flush(struct uart_port *port) -{ - /* read any pending char to make sure all irq status are - * cleared */ - (void)adm_uart_readl(port, UART_DR_REG); -} - -/* - * serial core request to initialize uart and start rx operation - */ -static int adm_uart_startup(struct uart_port *port) -{ - int ret; - - /* clear any pending external input interrupt */ - (void)adm_uart_readl(port, UART_IIR_REG); - - /* register irq and enable rx interrupts */ - ret = request_irq(port->irq, adm_uart_interrupt, 0, - adm_uart_type(port), port); - if (ret) - return ret; - - adm_uart_enable(port); - - return 0; -} - -/* - * serial core request to flush & disable uart - */ -static void adm_uart_shutdown(struct uart_port *port) -{ - unsigned long flags; - - spin_lock_irqsave(&port->lock, flags); -// adm_uart_writel(port, 0, UART_CR_REG); - spin_unlock_irqrestore(&port->lock, flags); - - adm_uart_disable(port); - adm_uart_flush(port); - free_irq(port->irq, port); -} - -/* - * serial core request to change current uart setting - */ -static void adm_uart_set_termios(struct uart_port *port, - struct ktermios *new, - struct ktermios *old) -{ - port->ignore_status_mask = 0; - uart_update_timeout(port, new->c_cflag, 115200); -} - -/* - * serial core request to claim uart iomem - */ -static int adm_uart_request_port(struct uart_port *port) -{ - unsigned int size = 0xf; - if (!request_mem_region(port->mapbase, size, "adm8668")) { - dev_err(port->dev, "Memory region busy\n"); - return -EBUSY; - } - - port->membase = ioremap(port->mapbase, size); - if (!port->membase) { - dev_err(port->dev, "Unable to map registers\n"); - release_mem_region(port->mapbase, size); - return -EBUSY; - } - return 0; -} - -/* - * serial core request to release uart iomem - */ -static void adm_uart_release_port(struct uart_port *port) -{ - release_mem_region(port->mapbase, 0xf); - iounmap(port->membase); -} - -/* - * serial core request to do any port required autoconfiguration - */ -static void adm_uart_config_port(struct uart_port *port, int flags) -{ - if (flags & UART_CONFIG_TYPE) { - if (adm_uart_request_port(port)) - return; - port->type = PORT_ADM8668; - } -} - -/* - * serial core request to check that port information in serinfo are - * suitable - */ -static int adm_uart_verify_port(struct uart_port *port, - struct serial_struct *serinfo) -{ - if (port->type != PORT_ADM8668) - return -EINVAL; - if (port->irq != serinfo->irq) - return -EINVAL; - if (port->iotype != serinfo->io_type) - return -EINVAL; - if (port->mapbase != (unsigned long)serinfo->iomem_base) - return -EINVAL; - return 0; -} - -/* serial core callbacks */ -static struct uart_ops adm_uart_ops = { - .tx_empty = adm_uart_tx_empty, - .get_mctrl = adm_uart_get_mctrl, - .set_mctrl = adm_uart_set_mctrl, - .start_tx = adm_uart_start_tx, - .stop_tx = adm_uart_stop_tx, - .stop_rx = adm_uart_stop_rx, - .enable_ms = adm_uart_enable_ms, - .break_ctl = adm_uart_break_ctl, - .startup = adm_uart_startup, - .shutdown = adm_uart_shutdown, - .set_termios = adm_uart_set_termios, - .type = adm_uart_type, - .release_port = adm_uart_release_port, - .request_port = adm_uart_request_port, - .config_port = adm_uart_config_port, - .verify_port = adm_uart_verify_port, -}; - -#ifdef CONFIG_SERIAL_ADM8668_CONSOLE -static inline void wait_for_xmitr(struct uart_port *port) -{ - while ((adm_uart_readl(port, UART_FR_REG) & UART_TX_FIFO_FULL) != 0) - ; -} - -/* - * output given char - */ -static void adm_console_putchar(struct uart_port *port, int ch) -{ - wait_for_xmitr(port); - adm_uart_writel(port, ch, UART_DR_REG); -} - -/* - * console core request to output given string - */ -static void adm_console_write(struct console *co, const char *s, - unsigned int count) -{ - struct uart_port *port; - unsigned long flags; - int locked; - - port = &ports[co->index]; - - local_irq_save(flags); - if (port->sysrq) { - /* adm_uart_interrupt() already took the lock */ - locked = 0; - } else if (oops_in_progress) { - locked = spin_trylock(&port->lock); - } else { - spin_lock(&port->lock); - locked = 1; - } - - /* call helper to deal with \r\n */ - uart_console_write(port, s, count, adm_console_putchar); - - /* and wait for char to be transmitted */ - wait_for_xmitr(port); - - if (locked) - spin_unlock(&port->lock); - local_irq_restore(flags); -} - -/* - * console core request to setup given console, find matching uart - * port and setup it. - */ -static int adm_console_setup(struct console *co, char *options) -{ - struct uart_port *port; - int baud = 115200; - int bits = 8; - int parity = 'n'; - int flow = 'n'; - - if (co->index < 0 || co->index >= ADM8668_NR_UARTS) - return -EINVAL; - port = &ports[co->index]; - if (!port->membase) - return -ENODEV; - - if (options) - uart_parse_options(options, &baud, &parity, &bits, &flow); - - return uart_set_options(port, co, baud, parity, bits, flow); -} - -static struct uart_driver adm_uart_driver; - -static struct console adm8668_console = { - .name = "ttyS", - .write = adm_console_write, - .device = uart_console_device, - .setup = adm_console_setup, - .flags = CON_PRINTBUFFER, - .index = -1, - .data = &adm_uart_driver, -}; - -static int __init adm8668_console_init(void) -{ - register_console(&adm8668_console); - return 0; -} - -console_initcall(adm8668_console_init); - -#define ADM8668_CONSOLE (&adm8668_console) -#else -#define ADM8668_CONSOLE NULL -#endif /* CONFIG_SERIAL_ADM8668_CONSOLE */ - -static struct uart_driver adm_uart_driver = { - .owner = THIS_MODULE, - .driver_name = "adm8668_uart", - .dev_name = "ttyS", - .major = TTY_MAJOR, - .minor = 64, - .nr = 1, - .cons = ADM8668_CONSOLE, -}; - -/* - * platform driver probe/remove callback - */ -static int __devinit adm_uart_probe(struct platform_device *pdev) -{ - struct resource *res_mem, *res_irq; - struct uart_port *port; - int ret; - - if (pdev->id < 0 || pdev->id >= ADM8668_NR_UARTS) - return -EINVAL; - - if (ports[pdev->id].membase) - return -EBUSY; - - res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res_mem) - return -ENODEV; - - res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!res_irq) - return -ENODEV; - - port = &ports[pdev->id]; - memset(port, 0, sizeof(*port)); - port->iotype = UPIO_MEM; - port->mapbase = res_mem->start; - port->irq = res_irq->start; - port->ops = &adm_uart_ops; - port->flags = UPF_BOOT_AUTOCONF; - port->dev = &pdev->dev; - port->fifosize = 8; - port->uartclk = ADM8668_UARTCLK_FREQ; - - ret = uart_add_one_port(&adm_uart_driver, port); - if (ret) { - ports[pdev->id].membase = 0; - return ret; - } - platform_set_drvdata(pdev, port); - return 0; -} - -static int __devexit adm_uart_remove(struct platform_device *pdev) -{ - struct uart_port *port; - - port = platform_get_drvdata(pdev); - uart_remove_one_port(&adm_uart_driver, port); - platform_set_drvdata(pdev, NULL); - /* mark port as free */ - ports[pdev->id].membase = 0; - return 0; -} - -/* - * platform driver stuff - */ -static struct platform_driver adm_uart_platform_driver = { - .probe = adm_uart_probe, - .remove = __devexit_p(adm_uart_remove), - .driver = { - .owner = THIS_MODULE, - .name = "adm8668_uart", - }, -}; - -static int __init adm_uart_init(void) -{ - int ret; - - ret = uart_register_driver(&adm_uart_driver); - if (ret) - return ret; - - ret = platform_driver_register(&adm_uart_platform_driver); - if (ret) - uart_unregister_driver(&adm_uart_driver); - - return ret; -} - -static void __exit adm_uart_exit(void) -{ - platform_driver_unregister(&adm_uart_platform_driver); - uart_unregister_driver(&adm_uart_driver); -} - -module_init(adm_uart_init); -module_exit(adm_uart_exit); - -MODULE_AUTHOR("Scott Nicholas <neutronscott@scottn.us>"); -MODULE_DESCRIPTION("ADM8668 integrated uart driver"); -MODULE_LICENSE("GPL"); diff --git a/target/linux/adm8668/files/arch/mips/include/asm/mach-adm8668/asm/sizes.h b/target/linux/adm8668/files/arch/mips/include/asm/mach-adm8668/asm/sizes.h new file mode 100644 index 0000000000..503843db15 --- /dev/null +++ b/target/linux/adm8668/files/arch/mips/include/asm/mach-adm8668/asm/sizes.h @@ -0,0 +1,56 @@ +/* + * 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 + */ +/* DO NOT EDIT!! - this file automatically generated + * from .s file by awk -f s2h.awk + */ +/* Size definitions + * Copyright (C) ARM Limited 1998. All rights reserved. + */ + +#ifndef __sizes_h +#define __sizes_h 1 + +/* handy sizes */ +#define SZ_16 0x00000010 +#define SZ_256 0x00000100 +#define SZ_512 0x00000200 + +#define SZ_1K 0x00000400 +#define SZ_4K 0x00001000 +#define SZ_8K 0x00002000 +#define SZ_16K 0x00004000 +#define SZ_64K 0x00010000 +#define SZ_128K 0x00020000 +#define SZ_256K 0x00040000 +#define SZ_512K 0x00080000 + +#define SZ_1M 0x00100000 +#define SZ_2M 0x00200000 +#define SZ_4M 0x00400000 +#define SZ_8M 0x00800000 +#define SZ_16M 0x01000000 +#define SZ_32M 0x02000000 +#define SZ_64M 0x04000000 +#define SZ_128M 0x08000000 +#define SZ_256M 0x10000000 +#define SZ_512M 0x20000000 + +#define SZ_1G 0x40000000 +#define SZ_2G 0x80000000 + +#endif + +/* END */ |