introduce_generic_hdq_gpio_bitbang_driver.patch

Introduce a new generic HDQ gpio based bitbang driver

Signed-off-by: Balaji Rao <balajirrao@openmoko.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/include/linux/hdq.h b/include/linux/hdq.h
new file mode 100644
index 00000000000..e706790648b
--- /dev/null
+++ b/include/linux/hdq.h
@@ -0,0 +1,30 @@
+#ifndef __LINUX_HDQ_H__
+#define __LINUX_HDQ_H__
+
+#include <linux/device.h>
+
+/* platform data */
+
+struct hdq_platform_data {
+	/*
+	 * give an opportunity to use us as parent for
+	 * devices that depend on us
+	 */
+	void (*attach_child_devices)(struct device *parent_device);
+	
+	void (*gpio_dir_out)(void);
+	void (*gpio_dir_in)(void);
+	void (*gpio_set)(int);
+	int (*gpio_get)(void);
+
+	int (*enable_fiq)(void);
+	void (*disable_fiq)(void);
+	void (*kick_fiq)(void);
+
+};
+
+int hdq_read(int address);
+int hdq_write(int address, u8 data);
+int hdq_initialized(void);
+
+#endif