[MIPS] Add generic GPIO to Au1x00

This patch adds support for the generic GPIO API to Au1x00 boards. It requires
the generic GPIO patch for MIPS boards by Yoichi Yuasa. Now there is a MIPS
target using it, can you queue these patchset for 2.6.22 ? Thank you very
much in advance.

Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 69 insertions, 0 deletions

diff --git a/include/asm-mips/mach-au1x00/gpio.h b/include/asm-mips/mach-au1x00/gpio.h
new file mode 100644
index 000000000000..2dc61e009a08
--- /dev/null
+++ b/include/asm-mips/mach-au1x00/gpio.h
@@ -0,0 +1,69 @@
+#ifndef _AU1XXX_GPIO_H_
+#define _AU1XXX_GPIO_H_
+
+#include <linux/types.h>
+
+#define AU1XXX_GPIO_BASE        200
+
+struct au1x00_gpio2 {
+        u32     dir;
+        u32     reserved;
+        u32     output;
+        u32     pinstate;
+        u32     inten;
+        u32     enable;
+};
+
+extern int au1xxx_gpio_get_value(unsigned gpio);
+extern void au1xxx_gpio_set_value(unsigned gpio, int value);
+extern int au1xxx_gpio_direction_input(unsigned gpio);
+extern int au1xxx_gpio_direction_output(unsigned gpio, int value);
+
+
+/* Wrappers for the arch-neutral GPIO API */
+
+static inline int gpio_request(unsigned gpio, const char *label)
+{
+        /* Not yet implemented */
+        return 0;
+}
+
+static inline void gpio_free(unsigned gpio)
+{
+        /* Not yet implemented */
+}
+
+static inline int gpio_direction_input(unsigned gpio)
+{
+        return au1xxx_gpio_direction_input(gpio);
+}
+
+static inline int gpio_direction_output(unsigned gpio, int value)
+{
+        return au1xxx_gpio_direction_output(gpio, value);
+}
+
+static inline int gpio_get_value(unsigned gpio)
+{
+        return au1xxx_gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned gpio, int value)
+{
+        au1xxx_gpio_set_value(gpio, value);
+}
+
+static inline int gpio_to_irq(unsigned gpio)
+{
+        return gpio;
+}
+
+static inline int irq_to_gpio(unsigned irq)
+{
+        return irq;
+}
+
+/* For cansleep */
+#include <asm-generic/gpio.h>
+
+#endif /* _AU1XXX_GPIO_H_ */