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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-08-05 19:14:15 +0400
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-08-07 12:55:48 +0400
commita09e64fbc0094e3073dbb09c3b4bfe4ab669244b (patch)
tree69689f467179891b498bd7423fcf61925173db31 /arch/arm/mach-imx/include/mach/gpio.h
parenta1b81a84fff05dbfef45b7012c26e1fee9973e5d (diff)
downloadlinux-a09e64fbc0094e3073dbb09c3b4bfe4ab669244b.tar.xz
[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
This just leaves include/asm-arm/plat-* to deal with. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-imx/include/mach/gpio.h')
-rw-r--r--arch/arm/mach-imx/include/mach/gpio.h102
1 files changed, 102 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/include/mach/gpio.h b/arch/arm/mach-imx/include/mach/gpio.h
new file mode 100644
index 000000000000..6e3d795f2264
--- /dev/null
+++ b/arch/arm/mach-imx/include/mach/gpio.h
@@ -0,0 +1,102 @@
+#ifndef _IMX_GPIO_H
+
+#include <mach/imx-regs.h>
+
+#define IMX_GPIO_ALLOC_MODE_NORMAL 0
+#define IMX_GPIO_ALLOC_MODE_NO_ALLOC 1
+#define IMX_GPIO_ALLOC_MODE_TRY_ALLOC 2
+#define IMX_GPIO_ALLOC_MODE_ALLOC_ONLY 4
+#define IMX_GPIO_ALLOC_MODE_RELEASE 8
+
+extern int imx_gpio_request(unsigned gpio, const char *label);
+
+extern void imx_gpio_free(unsigned gpio);
+
+extern int imx_gpio_setup_multiple_pins(const int *pin_list, unsigned count,
+ int alloc_mode, const char *label);
+
+extern int imx_gpio_direction_input(unsigned gpio);
+
+extern int imx_gpio_direction_output(unsigned gpio, int value);
+
+extern void __imx_gpio_set_value(unsigned gpio, int value);
+
+static inline int imx_gpio_get_value(unsigned gpio)
+{
+ return SSR(gpio >> GPIO_PORT_SHIFT) & (1 << (gpio & GPIO_PIN_MASK));
+}
+
+static inline void imx_gpio_set_value_inline(unsigned gpio, int value)
+{
+ unsigned long flags;
+
+ raw_local_irq_save(flags);
+ if(value)
+ DR(gpio >> GPIO_PORT_SHIFT) |= (1 << (gpio & GPIO_PIN_MASK));
+ else
+ DR(gpio >> GPIO_PORT_SHIFT) &= ~(1 << (gpio & GPIO_PIN_MASK));
+ raw_local_irq_restore(flags);
+}
+
+static inline void imx_gpio_set_value(unsigned gpio, int value)
+{
+ if(__builtin_constant_p(gpio))
+ imx_gpio_set_value_inline(gpio, value);
+ else
+ __imx_gpio_set_value(gpio, value);
+}
+
+extern int imx_gpio_to_irq(unsigned gpio);
+
+extern int imx_irq_to_gpio(unsigned irq);
+
+/*-------------------------------------------------------------------------*/
+
+/* Wrappers for "new style" GPIO calls. These calls i.MX specific versions
+ * to allow future extension of GPIO logic.
+ */
+
+static inline int gpio_request(unsigned gpio, const char *label)
+{
+ return imx_gpio_request(gpio, label);
+}
+
+static inline void gpio_free(unsigned gpio)
+{
+ imx_gpio_free(gpio);
+}
+
+static inline int gpio_direction_input(unsigned gpio)
+{
+ return imx_gpio_direction_input(gpio);
+}
+
+static inline int gpio_direction_output(unsigned gpio, int value)
+{
+ return imx_gpio_direction_output(gpio, value);
+}
+
+static inline int gpio_get_value(unsigned gpio)
+{
+ return imx_gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned gpio, int value)
+{
+ imx_gpio_set_value(gpio, value);
+}
+
+#include <asm-generic/gpio.h> /* cansleep wrappers */
+
+static inline int gpio_to_irq(unsigned gpio)
+{
+ return imx_gpio_to_irq(gpio);
+}
+
+static inline int irq_to_gpio(unsigned irq)
+{
+ return imx_irq_to_gpio(irq);
+}
+
+
+#endif