diff options
Diffstat (limited to 'target/linux/brcm63xx')
3 files changed, 53 insertions, 62 deletions
diff --git a/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c b/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c index 2c203a69e..b78d3fdaf 100644 --- a/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c +++ b/target/linux/brcm63xx/files/arch/mips/bcm63xx/gpio.c @@ -4,26 +4,29 @@ * for more details. * * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> + * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/spinlock.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> + #include <bcm63xx_cpu.h> #include <bcm63xx_gpio.h> #include <bcm63xx_io.h> #include <bcm63xx_regs.h> -static DEFINE_SPINLOCK(bcm63xx_gpio_lock); - -void bcm63xx_gpio_set_dataout(int gpio, int val) +static void bcm63xx_gpio_set(struct gpio_chip *chip, + unsigned gpio, int val) { u32 reg; u32 mask; u32 tmp; unsigned long flags; - if (gpio >= BCM63XX_GPIO_COUNT) + if (gpio >= chip->ngpio) BUG(); if (gpio < 32) { @@ -34,24 +37,22 @@ void bcm63xx_gpio_set_dataout(int gpio, int val) mask = 1 << (gpio - 32); } - spin_lock_irqsave(&bcm63xx_gpio_lock, flags); + local_irq_save(flags); tmp = bcm_gpio_readl(reg); if (val) tmp |= mask; else tmp &= ~mask; bcm_gpio_writel(tmp, reg); - spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags); + local_irq_restore(flags); } -EXPORT_SYMBOL(bcm63xx_gpio_set_dataout); - -int bcm63xx_gpio_get_datain(int gpio) +static int bcm63xx_gpio_get(struct gpio_chip *chip, unsigned gpio) { u32 reg; u32 mask; - if (gpio >= BCM63XX_GPIO_COUNT) + if (gpio >= chip->ngpio) BUG(); if (gpio < 32) { @@ -65,16 +66,15 @@ int bcm63xx_gpio_get_datain(int gpio) return !!(bcm_gpio_readl(reg) & mask); } -EXPORT_SYMBOL(bcm63xx_gpio_get_datain); - -void bcm63xx_gpio_set_direction(int gpio, int dir) +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 >= BCM63XX_GPIO_COUNT) + if (gpio >= chip->ngpio) BUG(); if (gpio < 32) { @@ -85,14 +85,44 @@ void bcm63xx_gpio_set_direction(int gpio, int dir) mask = 1 << (gpio - 32); } - spin_lock_irqsave(&bcm63xx_gpio_lock, flags); + local_irq_save(flags); tmp = bcm_gpio_readl(reg); if (dir == GPIO_DIR_IN) tmp &= ~mask; else tmp |= mask; bcm_gpio_writel(tmp, reg); - spin_unlock_irqrestore(&bcm63xx_gpio_lock, flags); + local_irq_restore(flags); + + return 0; +} + +static int bcm63xx_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) +{ + return bcm63xx_gpio_set_direction(chip, gpio, GPIO_DIR_IN); } -EXPORT_SYMBOL(bcm63xx_gpio_set_direction); +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, GPIO_DIR_OUT); +} + + +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, + .ngpio = BCM63XX_GPIO_COUNT, +}; + +static int __init bcm63xx_gpio_init(void) +{ + printk(KERN_INFO "registering %d GPIOs\n", BCM63XX_GPIO_COUNT); + return gpiochip_add(&bcm63xx_gpio_chip); +} +arch_initcall(bcm63xx_gpio_init); diff --git a/target/linux/brcm63xx/files/include/asm-mips/mach-bcm63xx/bcm63xx_gpio.h b/target/linux/brcm63xx/files/include/asm-mips/mach-bcm63xx/bcm63xx_gpio.h index 31145dfa6..72cee75f0 100644 --- a/target/linux/brcm63xx/files/include/asm-mips/mach-bcm63xx/bcm63xx_gpio.h +++ b/target/linux/brcm63xx/files/include/asm-mips/mach-bcm63xx/bcm63xx_gpio.h @@ -4,10 +4,6 @@ /* all helpers will BUG() if gpio count is >= 37. */ #define BCM63XX_GPIO_COUNT 37 -void bcm63xx_gpio_set_dataout(int gpio, int val); -int bcm63xx_gpio_get_datain(int gpio); -void bcm63xx_gpio_set_direction(int gpio, int dir); - #define GPIO_DIR_OUT 0x0 #define GPIO_DIR_IN 0x1 diff --git a/target/linux/brcm63xx/files/include/asm-mips/mach-bcm63xx/gpio.h b/target/linux/brcm63xx/files/include/asm-mips/mach-bcm63xx/gpio.h index dd2c0f3d5..033c997af 100644 --- a/target/linux/brcm63xx/files/include/asm-mips/mach-bcm63xx/gpio.h +++ b/target/linux/brcm63xx/files/include/asm-mips/mach-bcm63xx/gpio.h @@ -3,50 +3,15 @@ #include <bcm63xx_gpio.h> -static inline int gpio_is_valid(int number) -{ - return (number >= BCM63XX_GPIO_COUNT) ? 0 : 1; -} +#define NR_BUILTIN_GPIO BCM63XX_GPIO_COUNT -static inline int gpio_request(unsigned gpio, const char *label) -{ - return 0; -} +#define gpio_to_irq(gpio) NULL -static inline void gpio_free(unsigned gpio) -{ -} +#define gpio_get_value __gpio_get_value +#define gpio_set_value __gpio_set_value -static inline int gpio_direction_input(unsigned gpio) -{ - bcm63xx_gpio_set_direction(gpio, GPIO_DIR_IN); - return 0; -} +#define gpio_cansleep __gpio_cansleep -static inline int gpio_direction_output(unsigned gpio, int value) -{ - bcm63xx_gpio_set_direction(gpio, GPIO_DIR_OUT); - return 0; -} - -static inline int gpio_get_value(unsigned gpio) -{ - return bcm63xx_gpio_get_datain(gpio); -} - -static inline void gpio_set_value(unsigned gpio, int value) -{ - bcm63xx_gpio_set_dataout(gpio, value); -} - -static inline int gpio_to_irq(unsigned gpio) -{ - return gpio; -} - -static inline int irq_to_gpio(unsigned irq) -{ - return irq; -} +#include <asm-generic/gpio.h> #endif /* __ASM_MIPS_MACH_BCM63XX_GPIO_H */ |