diff options
Diffstat (limited to 'target/linux/ramips/files/arch/mips')
| -rw-r--r-- | target/linux/ramips/files/arch/mips/ralink/common/gpio.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/target/linux/ramips/files/arch/mips/ralink/common/gpio.c b/target/linux/ramips/files/arch/mips/ralink/common/gpio.c index e350fc173..766d7876d 100644 --- a/target/linux/ramips/files/arch/mips/ralink/common/gpio.c +++ b/target/linux/ramips/files/arch/mips/ralink/common/gpio.c @@ -1,7 +1,7 @@ /* * Ralink SoC specific GPIO support * - * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2009-2011 Gabor Juhos <juhosg@openwrt.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 @@ -64,11 +64,13 @@ enum ramips_pio_reg { struct ramips_gpio_chip { struct gpio_chip chip; - spinlock_t lock; u8 regs[RAMIPS_GPIO_REG_MAX]; -}; + unsigned long map_base; + unsigned long map_size; -static void __iomem *ramips_gpio_base; + spinlock_t lock; + void __iomem *regs_base; +}; static inline struct ramips_gpio_chip *to_ramips_gpio(struct gpio_chip *chip) { @@ -80,12 +82,12 @@ static inline struct ramips_gpio_chip *to_ramips_gpio(struct gpio_chip *chip) static inline void ramips_gpio_wr(struct ramips_gpio_chip *rg, u8 reg, u32 val) { - __raw_writel(val, ramips_gpio_base + rg->regs[reg]); + __raw_writel(val, rg->regs_base + rg->regs[reg]); } static inline u32 ramips_gpio_rr(struct ramips_gpio_chip *rg, u8 reg) { - return __raw_readl(ramips_gpio_base + rg->regs[reg]); + return __raw_readl(rg->regs_base + rg->regs[reg]); } static int ramips_gpio_direction_input(struct gpio_chip *chip, unsigned offset) @@ -164,6 +166,8 @@ static struct ramips_gpio_chip ramips_gpio_chip0 = { [RAMIPS_GPIO_REG_RESET] = GPIO0_REG_RESET, [RAMIPS_GPIO_REG_TOGGLE] = GPIO0_REG_TOGGLE, }, + .map_base = RALINK_SOC_GPIO_BASE, + .map_size = PAGE_SIZE, }; static struct ramips_gpio_chip ramips_gpio_chip1 = { @@ -188,6 +192,8 @@ static struct ramips_gpio_chip ramips_gpio_chip1 = { [RAMIPS_GPIO_REG_RESET] = GPIO1_REG_RESET, [RAMIPS_GPIO_REG_TOGGLE] = GPIO1_REG_TOGGLE, }, + .map_base = RALINK_SOC_GPIO_BASE, + .map_size = PAGE_SIZE, }; static struct ramips_gpio_chip ramips_gpio_chip2 = { @@ -212,12 +218,16 @@ static struct ramips_gpio_chip ramips_gpio_chip2 = { [RAMIPS_GPIO_REG_RESET] = GPIO2_REG_RESET, [RAMIPS_GPIO_REG_TOGGLE] = GPIO2_REG_TOGGLE, }, + .map_base = RALINK_SOC_GPIO_BASE, + .map_size = PAGE_SIZE, }; static __init void ramips_gpio_chip_add(struct ramips_gpio_chip *rg) { spin_lock_init(&rg->lock); + rg->regs_base = ioremap(rg->map_base, rg->map_size); + /* set polarity to low for all lines */ ramips_gpio_wr(rg, RAMIPS_GPIO_REG_POL, 0); @@ -226,8 +236,6 @@ static __init void ramips_gpio_chip_add(struct ramips_gpio_chip *rg) __init int ramips_gpio_init(void) { - ramips_gpio_base = ioremap_nocache(RALINK_SOC_GPIO_BASE, PAGE_SIZE); - ramips_gpio_chip_add(&ramips_gpio_chip0); ramips_gpio_chip_add(&ramips_gpio_chip1); ramips_gpio_chip_add(&ramips_gpio_chip2); |