4a014a240b
From: David Brownell <dbrownell@users.sourceforge.net> Fix GPIO-related build error on mach-imx platform: CC drivers/spi/spi_gpio.o In file included from /home/db/kernel/scratch/arch/arm/include/asm/gpio.h:5, from include/linux/gpio.h:7, from drivers/spi/spi_gpio.c:23: arch/arm/mach-imx/include/mach/gpio.h: In function 'imx_gpio_get_value': arch/arm/mach-imx/include/mach/gpio.h:27: error: implicit declaration of function '__REG2' arch/arm/mach-imx/include/mach/gpio.h:27: error: 'IMX_IO_BASE' undeclared (first use in this function) arch/arm/mach-imx/include/mach/gpio.h:27: error: (Each undeclared identifier is reported only once arch/arm/mach-imx/include/mach/gpio.h:27: error: for each function it appears in.) arch/arm/mach-imx/include/mach/gpio.h: In function 'imx_gpio_set_value_inline': arch/arm/mach-imx/include/mach/gpio.h:36: error: 'IMX_IO_BASE' undeclared (first use in this function) arch/arm/mach-imx/include/mach/gpio.h:36: error: lvalue required as left operand of assignment arch/arm/mach-imx/include/mach/gpio.h:38: error: lvalue required as left operand of assignment ... Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
107 lines
2.4 KiB
C
107 lines
2.4 KiB
C
#ifndef _IMX_GPIO_H
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#include <linux/kernel.h>
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#include <mach/hardware.h>
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#include <mach/imx-regs.h>
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#define IMX_GPIO_ALLOC_MODE_NORMAL 0
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#define IMX_GPIO_ALLOC_MODE_NO_ALLOC 1
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#define IMX_GPIO_ALLOC_MODE_TRY_ALLOC 2
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#define IMX_GPIO_ALLOC_MODE_ALLOC_ONLY 4
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#define IMX_GPIO_ALLOC_MODE_RELEASE 8
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extern int imx_gpio_request(unsigned gpio, const char *label);
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extern void imx_gpio_free(unsigned gpio);
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extern int imx_gpio_setup_multiple_pins(const int *pin_list, unsigned count,
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int alloc_mode, const char *label);
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extern int imx_gpio_direction_input(unsigned gpio);
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extern int imx_gpio_direction_output(unsigned gpio, int value);
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extern void __imx_gpio_set_value(unsigned gpio, int value);
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static inline int imx_gpio_get_value(unsigned gpio)
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{
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return SSR(gpio >> GPIO_PORT_SHIFT) & (1 << (gpio & GPIO_PIN_MASK));
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}
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static inline void imx_gpio_set_value_inline(unsigned gpio, int value)
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{
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unsigned long flags;
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raw_local_irq_save(flags);
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if(value)
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DR(gpio >> GPIO_PORT_SHIFT) |= (1 << (gpio & GPIO_PIN_MASK));
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else
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DR(gpio >> GPIO_PORT_SHIFT) &= ~(1 << (gpio & GPIO_PIN_MASK));
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raw_local_irq_restore(flags);
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}
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static inline void imx_gpio_set_value(unsigned gpio, int value)
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{
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if(__builtin_constant_p(gpio))
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imx_gpio_set_value_inline(gpio, value);
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else
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__imx_gpio_set_value(gpio, value);
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}
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extern int imx_gpio_to_irq(unsigned gpio);
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extern int imx_irq_to_gpio(unsigned irq);
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/*-------------------------------------------------------------------------*/
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/* Wrappers for "new style" GPIO calls. These calls i.MX specific versions
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* to allow future extension of GPIO logic.
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*/
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static inline int gpio_request(unsigned gpio, const char *label)
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{
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return imx_gpio_request(gpio, label);
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}
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static inline void gpio_free(unsigned gpio)
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{
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might_sleep();
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imx_gpio_free(gpio);
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}
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static inline int gpio_direction_input(unsigned gpio)
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{
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return imx_gpio_direction_input(gpio);
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}
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static inline int gpio_direction_output(unsigned gpio, int value)
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{
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return imx_gpio_direction_output(gpio, value);
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}
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static inline int gpio_get_value(unsigned gpio)
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{
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return imx_gpio_get_value(gpio);
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}
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static inline void gpio_set_value(unsigned gpio, int value)
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{
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imx_gpio_set_value(gpio, value);
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}
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#include <asm-generic/gpio.h> /* cansleep wrappers */
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static inline int gpio_to_irq(unsigned gpio)
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{
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return imx_gpio_to_irq(gpio);
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}
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static inline int irq_to_gpio(unsigned irq)
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{
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return imx_irq_to_gpio(irq);
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}
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#endif
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