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mb/google/ocelot/var/ocelot: Add wake support for touchpad

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This patch supports wake on touch for touchpad when LPSS I2C interface
is used by overriding GPE DW0 with group GPP_F.

Schematic version: schematic_1433518
Platform Mapping Document : Rev0p86

BUG=b:394208231
TEST= Build Ocelot and verify it compiles without any error.

Change-Id: Id2cc248aacebc0e85d06ad5c63c0605dd72cd05c
Signed-off-by: Sowmya Aralguppe <sowmya.aralguppe@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/88534
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Pranava Y N <pranavayn@google.com>
Reviewed-by: Avi Uday <aviuday@google.com>
This commit is contained in:
Sowmya Aralguppe 2025-07-22 18:19:06 +05:30 • committed by Matt DeVillier
commit debfac6352
1 changed files with 12 additions and 7 deletions
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19
src/mainboard/google/ocelot/variants/ocelot/variant.c
View file

@ -23,12 +23,14 @@ void variant_update_soc_chip_config(struct soc_intel_pantherlake_config *config)
}
/* Touchscreen and Touchpad WOT support:
* +===================+==================+=================+============================+
* | Touchscreen | Touchpad | PMC_GPE0_DW0 | WOT |
* +===================+==================+==============================================+
* | THC-SPI/THC-I2C | THC-I2C | VGPIO | TS, TP |
* +===================+==================+=================+============================+
*/
* +===================+==================+=================+========================+
* | Touchscreen | Touchpad | PMC_GPE0_DW0 | WOT |
* +===================+==================+=================+========================+
* | THC-SPI/THC-I2C | THC-I2C | VGPIO | TS, TP |
* +===================+==================+=================+========================+
* | THC-SPI/THC-I2C | LPSS-I2C | GPP_F18 | TP |
* +===================+==================+=================+========================+
*/
if (fw_config_probe(FW_CONFIG(TOUCHSCREEN, TOUCHSCREEN_THC_I2C))) {
config->thc_mode[0] = THC_HID_I2C_MODE;
@ -36,7 +38,10 @@ void variant_update_soc_chip_config(struct soc_intel_pantherlake_config *config)
config->thc_mode[0] = THC_HID_SPI_MODE;
}
if (fw_config_probe(FW_CONFIG(TOUCHPAD, TOUCHPAD_THC_I2C))) {
if (fw_config_probe(FW_CONFIG(TOUCHPAD, TOUCHPAD_LPSS_I2C))) {
/* touchpad: GPP_F18: GPE0_DW0_18 */
config->pmc_gpe0_dw0 = GPP_F;
} else if (fw_config_probe(FW_CONFIG(TOUCHPAD, TOUCHPAD_THC_I2C))) {
config->thc_mode[1] = THC_HID_I2C_MODE;
if (fw_config_probe(FW_CONFIG(TOUCHSCREEN, TOUCHSCREEN_NONE)))
/* When THC0 is only enabled due to THC1 is enabled, we force THC0