Messages in this thread Patch in this message | | | From | David Brownell <> | Subject | [patch 2.6.20-rc1 2/6] OMAP GPIO wrappers | Date | Wed, 20 Dec 2006 13:09:44 -0800 |
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This teaches OMAP how to implement the cross-platform GPIO interfaces.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Index: at91/include/asm-arm/arch-omap/gpio.h =================================================================== --- at91.orig/include/asm-arm/arch-omap/gpio.h 2006-12-19 01:45:33.000000000 -0800 +++ at91/include/asm-arm/arch-omap/gpio.h 2006-12-19 02:06:11.000000000 -0800 @@ -76,4 +76,58 @@ extern void omap_set_gpio_direction(int extern void omap_set_gpio_dataout(int gpio, int enable); extern int omap_get_gpio_datain(int gpio); +/*-------------------------------------------------------------------------*/ + +/* wrappers for "new style" GPIO calls. the old OMAP-specfic ones should + * eventually be removed (along with this errno.h inclusion), and maybe + * gpios should put MPUIOs last too. + */ + +#include <asm/errno.h> + +static inline int gpio_request(unsigned gpio, const char *label) + { return omap_request_gpio(gpio); } + +static inline void gpio_free(unsigned gpio) + { omap_free_gpio(gpio); } + + +static inline int __gpio_set_direction(unsigned gpio, int is_input) +{ + if (cpu_class_is_omap2()) { + if (gpio > OMAP_MAX_GPIO_LINES) + return -EINVAL; + } else { + if (gpio > (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */)) + return -EINVAL; + } + omap_set_gpio_direction(gpio, is_input); + return 0; +} + +static inline int gpio_direction_input(unsigned gpio) + { return __gpio_set_direction(gpio, 1); } + +static inline int gpio_direction_output(unsigned gpio) + { return __gpio_set_direction(gpio, 0); } + + +static inline int gpio_get_value(unsigned gpio) + { return omap_get_gpio_datain(gpio); } + +static inline void gpio_set_value(unsigned gpio, int value) + { omap_set_gpio_dataout(gpio, value); } + +#include <asm-generic/gpio.h> /* cansleep wrappers */ + +static inline int gpio_to_irq(unsigned gpio) + { return OMAP_GPIO_IRQ(gpio); } + +static inline int irq_to_gpio(unsigned irq) +{ + if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16))) + return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES; + return irq - IH_GPIO_BASE; +} + #endif - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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