[PATCH 2/3] GTA02: use POWER button to append debug parameters to the kernel command line
Paul Fertser
fercerpav at gmail.com
Sat Jan 17 13:24:38 CET 2009
---
src/cpu/s3c2442/gta02.c | 25 +++++++++++++++----------
1 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/src/cpu/s3c2442/gta02.c b/src/cpu/s3c2442/gta02.c
index d0dafd0..ac18338 100644
--- a/src/cpu/s3c2442/gta02.c
+++ b/src/cpu/s3c2442/gta02.c
@@ -378,31 +378,35 @@ static void close_gta02(void)
}
+/* Here we will care only about AUX button as polling for PWR button
+ * through i2c slows down the boot */
+
static u8 get_ui_keys_gta02(void)
{
u8 keys;
- u8 ret;
+ u8 ret = 0;
static u8 old_keys = 0; /* previous state for debounce */
- static u8 old_ret = 0; /* previous debounced output for edge detect */
+ static u8 older_keys = 0; /* previous debounced output for edge detect */
- /* GPF6 is AUX on GTA02, map to UI_ACTION_ADD_DEBUG, down = 1 */
+ /* GPF6 is AUX on GTA02, map to UI_ACTION_SKIPKERNEL, down = 1 */
keys = !!(rGPFDAT & (1 << 6));
- if (keys == old_keys)
- ret = keys;
- else
- ret = old_keys;
-
/* edge action */
- if ((ret & 1) && !(old_ret & 1))
+ if ((old_keys & 1) && !(older_keys & 1))
ret |= UI_ACTION_SKIPKERNEL;
+ older_keys = old_keys;
old_keys = keys;
- old_ret = ret;
return ret;
}
+static u8 get_ui_debug_gta02(void)
+{
+ /* PWR button state can be seen in OOCSTAT b0, down = 0, map to UI_ACTION_ADD_DEBUG */
+ return !(i2c_read_sync(&bb_s3c24xx, PCF50633_I2C_ADS, PCF50633_REG_OOCSTAT) & 1);
+}
+
static void set_ui_indication_gta02(enum ui_indication ui_indication)
{
@@ -456,6 +460,7 @@ const struct board_api board_api_gta02 = {
.putc = putc_gta02,
.close = close_gta02,
.get_ui_keys = get_ui_keys_gta02,
+ .get_ui_debug = get_ui_debug_gta02,
.set_ui_indication = set_ui_indication_gta02,
.commandline_board = "mtdparts=physmap-flash:-(nor);" \
"neo1973-nand:" \
--
1.5.2.2
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