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| author | Florian Fainelli <florian@openwrt.org> | 2010-01-03 21:16:51 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-02-27 12:53:16 +0100 |
| commit | 5f3c909881d5deebb9a3ddc836a15937e76daefc (patch) | |
| tree | 5306ae518c1da71bdba1814e49e75ad7cd6c2736 /arch/mips/include | |
| parent | 69b427cd23b6f637763bf49e3e166c1236313f69 (diff) | |
| download | kernel_samsung_crespo-5f3c909881d5deebb9a3ddc836a15937e76daefc.zip kernel_samsung_crespo-5f3c909881d5deebb9a3ddc836a15937e76daefc.tar.gz kernel_samsung_crespo-5f3c909881d5deebb9a3ddc836a15937e76daefc.tar.bz2 | |
MIPS: AR7: Implement gpiolib
This patch implements gpiolib for the AR7 SoC.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/816/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include')
| -rw-r--r-- | arch/mips/include/asm/mach-ar7/gpio.h | 86 |
1 files changed, 8 insertions, 78 deletions
diff --git a/arch/mips/include/asm/mach-ar7/gpio.h b/arch/mips/include/asm/mach-ar7/gpio.h index cbe9c4f..73f9b16 100644 --- a/arch/mips/include/asm/mach-ar7/gpio.h +++ b/arch/mips/include/asm/mach-ar7/gpio.h @@ -1,5 +1,5 @@ /* - * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org> + * Copyright (C) 2007-2009 Florian Fainelli <florian@openwrt.org> * * 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 @@ -22,88 +22,18 @@ #include <asm/mach-ar7/ar7.h> #define AR7_GPIO_MAX 32 +#define NR_BUILTIN_GPIO AR7_GPIO_MAX -extern int gpio_request(unsigned gpio, const char *label); -extern void gpio_free(unsigned gpio); +#define gpio_to_irq(gpio) NULL -/* Common GPIO layer */ -static inline int gpio_get_value(unsigned gpio) -{ - void __iomem *gpio_in = - (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_INPUT); +#define gpio_get_value __gpio_get_value +#define gpio_set_value __gpio_set_value - return readl(gpio_in) & (1 << gpio); -} - -static inline void gpio_set_value(unsigned gpio, int value) -{ - void __iomem *gpio_out = - (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_OUTPUT); - unsigned tmp; - - tmp = readl(gpio_out) & ~(1 << gpio); - if (value) - tmp |= 1 << gpio; - writel(tmp, gpio_out); -} - -static inline int gpio_direction_input(unsigned gpio) -{ - void __iomem *gpio_dir = - (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_DIR); - - if (gpio >= AR7_GPIO_MAX) - return -EINVAL; - - writel(readl(gpio_dir) | (1 << gpio), gpio_dir); - - return 0; -} - -static inline int gpio_direction_output(unsigned gpio, int value) -{ - void __iomem *gpio_dir = - (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_DIR); - - if (gpio >= AR7_GPIO_MAX) - return -EINVAL; - - gpio_set_value(gpio, value); - writel(readl(gpio_dir) & ~(1 << gpio), gpio_dir); - - return 0; -} - -static inline int gpio_to_irq(unsigned gpio) -{ - return -EINVAL; -} - -static inline int irq_to_gpio(unsigned irq) -{ - return -EINVAL; -} +#define gpio_cansleep __gpio_cansleep /* Board specific GPIO functions */ -static inline int ar7_gpio_enable(unsigned gpio) -{ - void __iomem *gpio_en = - (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_ENABLE); - - writel(readl(gpio_en) | (1 << gpio), gpio_en); - - return 0; -} - -static inline int ar7_gpio_disable(unsigned gpio) -{ - void __iomem *gpio_en = - (void __iomem *)KSEG1ADDR(AR7_REGS_GPIO + AR7_GPIO_ENABLE); - - writel(readl(gpio_en) & ~(1 << gpio), gpio_en); - - return 0; -} +int ar7_gpio_enable(unsigned gpio); +int ar7_gpio_disable(unsigned gpio); #include <asm-generic/gpio.h> |