mb/google/eve: Remove ACPI control of touchscreen power

Change the touchscreen power control back to coreboot instead of
under the ACPI _ON/_OFF methods, and switch the TOUCHSCREEN_STOP_L
pin back to an output.

This reverts previous changes to touchscreen GPIOs that were made
to get back to a known good/working state.  Having ACPI control these
pins was resulting in a small percentage of touchscreen not being
discovered at boot.  This platform is not intending to use S0ix so
the ACPI control is not needed.

BUG=b:63718744
TEST=manual testing on Eve devices.

Change-Id: I3fd64a435a053da1558ef736fe7baceee3c8f3a0
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Change-Id: Ia1e2ae7ca2a8b668c60fbda2aa50373e580646b2
Original-Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/572692
Original-Reviewed-by: Duncan Laurie <dlaurie@google.com>
Original-Commit-Queue: Duncan Laurie <dlaurie@google.com>
Original-Tested-by: Duncan Laurie <dlaurie@google.com>
Reviewed-on: https://review.coreboot.org/22445
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mainboard/google/eve/smihandler.c b/src/mainboard/google/eve/smihandler.c
index f51248cef5..e449900cb1 100644
--- a/src/mainboard/google/eve/smihandler.c
+++ b/src/mainboard/google/eve/smihandler.c
@@ -30,6 +30,12 @@ static void mainboard_gpio_smi_sleep(u8 slp_typ)
 {
 	/* Power down the rails on any sleep type */
 	gpio_set(EN_PP3300_DX_CAM, 0);
+
+	/* Assert TOUSHCREEN_STOP_L */
+	gpio_set(GPP_E11, 0);
+
+	/* Turn off touchscreen power */
+	gpio_set(GPP_C22, 0);
 }
 
 void mainboard_smi_sleep(u8 slp_typ)