Atmel MXT touchscreen: increase reset timeouts

There is a more complete atmel patch-series out by Nick Dyer that fixes this and other things, but in the meantime this is the minimal thing to get the touchscreen going on (at least my) Pixel Chromebook. Not that I want my dirty fingers near that beautiful screen, but it seems that a non-initialized touchscreen will also end up being a constant wakeup source, so you have to disable it to go to sleep. And it's easier to just fix the initialization sequence. Signed-off-by: Linus Torvalds <[email protected]>
mrcsosa · Mar 9, 2013 · 8343bce · 8343bce
1 parent 0aefda3
commit 8343bce
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c
@@ -176,8 +176,8 @@
 /* Define for MXT_GEN_COMMAND_T6 */
 #define MXT_BOOT_VALUE		0xa5
 #define MXT_BACKUP_VALUE	0x55
-#define MXT_BACKUP_TIME		25	/* msec */
-#define MXT_RESET_TIME		65	/* msec */
+#define MXT_BACKUP_TIME		50	/* msec */
+#define MXT_RESET_TIME		200	/* msec */
 
 #define MXT_FWRESET_TIME	175	/* msec */