[PATCH 02/13] qi-gta02-add-ui-debounce.patch

[Andy Green]

Signed-off-by: Andy Green <andy at openmoko.com>
---

 src/cpu/s3c2442/gta02.c |   25 +++++++++++++++++++++++++
 1 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/src/cpu/s3c2442/gta02.c b/src/cpu/s3c2442/gta02.c
index f7405e6..2ea520a 100644
--- a/src/cpu/s3c2442/gta02.c
+++ b/src/cpu/s3c2442/gta02.c
@@ -368,6 +368,30 @@ static void close_gta02(void)
 	(bb_s3c24xx.close)();
 }
 
+static u8 get_ui_keys_gta02(void)
+{
+	u8 keys;
+	u8 ret;
+	static u8 old_keys = 0; /* previous state for debounce */
+	static u8 old_ret = 0; /* previous debounced output for edge detect */
+
+	/* GPF6 is AUX on GTA02, map to UI_ACTION_ADD_DEBUG, down = 1 */
+	keys = !!(rGPFDAT & (1 << 6));
+
+	if (keys == old_keys)
+		ret = keys;
+	else
+		ret = old_keys;
+
+	/* edge action */
+	if ((ret & 1) && !(old_ret & 1))
+		ret |= UI_ACTION_SKIPKERNEL;
+
+	old_keys = keys;
+	old_ret = ret;
+	
+	return ret;
+}
 /*
  * our API for bootloader on this machine
  */
@@ -383,6 +407,7 @@ const struct board_api board_api_gta02 = {
 	.port_init = port_init_gta02,
 	.putc = putc_gta02,
 	.close = close_gta02,
+	.get_ui_keys = get_ui_keys_gta02,
 	.commandline_board = "mtdparts=physmap-flash:-(nor);" \
 				       "neo1973-nand:" \
 				       "0x00040000(qi)," \