[S] Change in coreboot[master]: mb/google/brya/variants/volmar: Disable the unused FP pads

[Martin L Roth (Code Review)]

Martin L Roth has submitted this change. ( https://review.coreboot.org/c/coreboot/+/69465 )

Change subject: mb/google/brya/variants/volmar: Disable the unused FP pads
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mb/google/brya/variants/volmar: Disable the unused FP pads

Disable the unused fingerprinter(FP) gpio for zavala by fw_config
FPMCU_MASK field.

BUG=b:250807253
TEST=build firmware and veriify the FP function on volmar DUT

Signed-off-by: Ren Kuo 
Change-Id: I0af1b7c3e4829ecab98525ead4f078c3eb6485d0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69465
Reviewed-by: Eric Lai 
Tested-by: build bot (Jenkins) 
---
M src/mainboard/google/brya/variants/volmar/fw_config.c
1 file changed, 30 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Eric Lai: Looks good to me, approved

diff --git a/src/mainboard/google/brya/variants/volmar/fw_config.c b/src/mainboard/google/brya/variants/volmar/fw_config.c
index 375dca2..38b9ace 100644
--- a/src/mainboard/google/brya/variants/volmar/fw_config.c
+++ b/src/mainboard/google/brya/variants/volmar/fw_config.c
@@ -63,6 +63,12 @@
    PAD_NC(GPP_VGPIO_37, NONE),
 };

+static const struct pad_config fp_disable_pads[] = {
+	PAD_NC(GPP_D0, NONE),	/* D0  : ISH_GP0 ==> PCH_FP_BOOT0 */
+	PAD_NC(GPP_D1, NONE),	/* D1  : ISH_GP1 ==> FP_RST_ODL */
+	PAD_NC(GPP_D2, NONE),	/* D2  : ISH_GP2 ==> EN_FP_PWR */
+};
+
 static void fw_config_handle(void *unused)
 {
    if (!fw_config_is_provisioned() || fw_config_probe(FW_CONFIG(AUDIO, AUDIO_UNKNOWN))) {
@@ -83,5 +89,10 @@
    	printk(BIOS_INFO, "Disabling BT offload\n");
    	gpio_configure_pads(bt_i2s_disable_pads, ARRAY_SIZE(bt_i2s_disable_pads));
    }
+
+	if (fw_config_probe(FW_CONFIG(FPMCU_MASK, FPMCU_DISABLED))) {
+		printk(BIOS_INFO, "Disabling FP pads\n");
+		gpio_configure_pads(fp_disable_pads, ARRAY_SIZE(fp_disable_pads));
+	}
 }
 BOOT_STATE_INIT_ENTRY(BS_DEV_ENABLE, BS_ON_ENTRY, fw_config_handle, NULL);