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 0000000..6e3d795
--- /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