diff options
Diffstat (limited to 'target/linux/brcm63xx/patches-4.1/375-MIPS-BCM63XX-switch-to-new-gpio-driver.patch')
| -rw-r--r-- | target/linux/brcm63xx/patches-4.1/375-MIPS-BCM63XX-switch-to-new-gpio-driver.patch | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/target/linux/brcm63xx/patches-4.1/375-MIPS-BCM63XX-switch-to-new-gpio-driver.patch b/target/linux/brcm63xx/patches-4.1/375-MIPS-BCM63XX-switch-to-new-gpio-driver.patch new file mode 100644 index 0000000..ce32f64 --- /dev/null +++ b/target/linux/brcm63xx/patches-4.1/375-MIPS-BCM63XX-switch-to-new-gpio-driver.patch @@ -0,0 +1,216 @@ +From cc99dca188bb63ba390008e2f7fa62d0300233e0 Mon Sep 17 00:00:00 2001 +From: Jonas Gorski <jogo@openwrt.org> +Date: Fri, 20 Feb 2015 23:58:54 +0100 +Subject: [PATCH 2/6] MIPS: BCM63XX: switch to new gpio driver + +Signed-off-by: Jonas Gorski <jogo@openwrt.org> +--- + arch/mips/bcm63xx/boards/board_common.c | 2 + + arch/mips/bcm63xx/gpio.c | 147 +++++++------------------------ + arch/mips/bcm63xx/setup.c | 3 - + 3 files changed, 33 insertions(+), 119 deletions(-) + +--- a/arch/mips/bcm63xx/boards/board_common.c ++++ b/arch/mips/bcm63xx/boards/board_common.c +@@ -189,6 +189,8 @@ int __init board_register_devices(void) + } + #endif + ++ bcm63xx_gpio_init(); ++ + if (board.has_uart0) + bcm63xx_uart_register(0); + +--- a/arch/mips/bcm63xx/gpio.c ++++ b/arch/mips/bcm63xx/gpio.c +@@ -5,147 +5,62 @@ + * + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> + * Copyright (C) 2008-2011 Florian Fainelli <florian@openwrt.org> ++ * Copyright (C) Jonas Gorski <jogo@openwrt.org> + */ + + #include <linux/kernel.h> +-#include <linux/module.h> +-#include <linux/spinlock.h> + #include <linux/platform_device.h> ++#include <linux/basic_mmio_gpio.h> + #include <linux/gpio.h> + + #include <bcm63xx_cpu.h> + #include <bcm63xx_gpio.h> +-#include <bcm63xx_io.h> + #include <bcm63xx_regs.h> + +-static u32 gpio_out_low_reg; +- +-static void bcm63xx_gpio_out_low_reg_init(void) ++static void __init bcm63xx_gpio_init_one(int id, int dir, int data, int ngpio) + { +- switch (bcm63xx_get_cpu_id()) { +- case BCM6345_CPU_ID: +- gpio_out_low_reg = GPIO_DATA_LO_REG_6345; +- break; +- default: +- gpio_out_low_reg = GPIO_DATA_LO_REG; +- break; +- } +-} +- +-static DEFINE_SPINLOCK(bcm63xx_gpio_lock); +-static u32 gpio_out_low, gpio_out_high; ++ struct resource res[2]; ++ struct bgpio_pdata pdata; + +-static void bcm63xx_gpio_set(struct gpio_chip *chip, +- unsigned gpio, int val) +-{ +- u32 reg; +- u32 mask; +- u32 *v; +- unsigned long flags; +- +- if (gpio >= chip->ngpio) +- BUG(); +- +- if (gpio < 32) { +- reg = gpio_out_low_reg; +- mask = 1 << gpio; +- v = &gpio_out_low; +- } else { +- reg = GPIO_DATA_HI_REG; +- mask = 1 << (gpio - 32); +- v = &gpio_out_high; +- } +- +- spin_lock_irqsave(&bcm63xx_gpio_lock, flags); +- if (val) +- *v |= mask; +- else +- *v &= ~mask; +- bcm_gpio_writel(*v, reg); +- spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags); +-} ++ memset(res, 0, sizeof(res)); ++ memset(&pdata, 0, sizeof(pdata)); + +-static int bcm63xx_gpio_get(struct gpio_chip *chip, unsigned gpio) +-{ +- u32 reg; +- u32 mask; ++ res[0].flags = IORESOURCE_MEM; ++ res[0].start = bcm63xx_regset_address(RSET_GPIO); ++ res[0].start += dir; + +- if (gpio >= chip->ngpio) +- BUG(); ++ res[0].end = res[0].start + 3; + +- if (gpio < 32) { +- reg = gpio_out_low_reg; +- mask = 1 << gpio; +- } else { +- reg = GPIO_DATA_HI_REG; +- mask = 1 << (gpio - 32); +- } ++ res[1].flags = IORESOURCE_MEM; ++ res[1].start = bcm63xx_regset_address(RSET_GPIO); ++ res[1].start += data; + +- return !!(bcm_gpio_readl(reg) & mask); +-} ++ res[1].end = res[1].start + 3; + +-static int bcm63xx_gpio_set_direction(struct gpio_chip *chip, +- unsigned gpio, int dir) +-{ +- u32 reg; +- u32 mask; +- u32 tmp; +- unsigned long flags; +- +- if (gpio >= chip->ngpio) +- BUG(); +- +- if (gpio < 32) { +- reg = GPIO_CTL_LO_REG; +- mask = 1 << gpio; +- } else { +- reg = GPIO_CTL_HI_REG; +- mask = 1 << (gpio - 32); +- } +- +- spin_lock_irqsave(&bcm63xx_gpio_lock, flags); +- tmp = bcm_gpio_readl(reg); +- if (dir == BCM63XX_GPIO_DIR_IN) +- tmp &= ~mask; +- else +- tmp |= mask; +- bcm_gpio_writel(tmp, reg); +- spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags); ++ pdata.base = id * 32; ++ pdata.ngpio = ngpio; + +- return 0; ++ platform_device_register_resndata(NULL, "bcm63xx-gpio", id, res, 2, ++ &pdata, sizeof(pdata)); + } + +-static int bcm63xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) ++int __init bcm63xx_gpio_init(void) + { +- return bcm63xx_gpio_set_direction(chip, gpio, BCM63XX_GPIO_DIR_IN); +-} ++ int ngpio = bcm63xx_gpio_count(); ++ int data_low_reg; + +-static int bcm63xx_gpio_direction_output(struct gpio_chip *chip, +- unsigned gpio, int value) +-{ +- bcm63xx_gpio_set(chip, gpio, value); +- return bcm63xx_gpio_set_direction(chip, gpio, BCM63XX_GPIO_DIR_OUT); +-} ++ if (BCMCPU_IS_6345()) ++ data_low_reg = GPIO_DATA_LO_REG_6345; ++ else ++ data_low_reg = GPIO_DATA_LO_REG; + ++ bcm63xx_gpio_init_one(0, GPIO_CTL_LO_REG, data_low_reg, min(ngpio, 32)); + +-static struct gpio_chip bcm63xx_gpio_chip = { +- .label = "bcm63xx-gpio", +- .direction_input = bcm63xx_gpio_direction_input, +- .direction_output = bcm63xx_gpio_direction_output, +- .get = bcm63xx_gpio_get, +- .set = bcm63xx_gpio_set, +- .base = 0, +-}; ++ if (ngpio <= 32) ++ return 0; + +-int __init bcm63xx_gpio_init(void) +-{ +- bcm63xx_gpio_out_low_reg_init(); ++ bcm63xx_gpio_init_one(1, GPIO_CTL_HI_REG, GPIO_DATA_HI_REG, ngpio - 32); + +- gpio_out_low = bcm_gpio_readl(gpio_out_low_reg); +- if (!BCMCPU_IS_6345()) +- gpio_out_high = bcm_gpio_readl(GPIO_DATA_HI_REG); +- bcm63xx_gpio_chip.ngpio = bcm63xx_gpio_count(); +- pr_info("registering %d GPIOs\n", bcm63xx_gpio_chip.ngpio); ++ return 0; + +- return gpiochip_add(&bcm63xx_gpio_chip); + } +--- a/arch/mips/bcm63xx/setup.c ++++ b/arch/mips/bcm63xx/setup.c +@@ -164,9 +164,6 @@ void __init plat_mem_setup(void) + + int __init bcm63xx_register_devices(void) + { +- /* register gpiochip */ +- bcm63xx_gpio_init(); +- + return board_register_devices(); + } + |