ALSA: add headphone over current switches
Some CODECs monitor current drawn by headphone power amplifer.
If current consumed goes over pre-defined threshold, CODEC would
communicate to host processor. Then, CODEC driver would propagate
the event so user-space application can react accordingly.
Add support to propagate over current events for both
left headphone and right headphone through ALSA jack framework.
Change-Id: Ieef36f070a4478a5a80ec4c8b0cc81464abd75ad
Signed-off-by: Patrick Lai <plai@codeaurora.org>
diff --git a/include/linux/input.h b/include/linux/input.h
index d9133f2..b1f7161 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -812,6 +812,8 @@
#define SW_KEYPAD_SLIDE 0x0a /* set = keypad slide out */
#define SW_FRONT_PROXIMITY 0x0b /* set = front proximity sensor active */
#define SW_ROTATE_LOCK 0x0c /* set = rotate locked/disabled */
+#define SW_HPHL_OVERCURRENT 0x0d /* set = over current on left hph */
+#define SW_HPHR_OVERCURRENT 0x0e /* set = over current on right hph */
#define SW_MAX 0x0f
#define SW_CNT (SW_MAX+1)