From 655fa5c39b34caa5fade7a3d69a2ef074ed01247 Mon Sep 17 00:00:00 2001
From: Malik_Hsu <malik_hsu@wistron.corp-partner.google.com>
Date: Tue, 23 Nov 2021 15:14:08 +0800
Subject: [PATCH] mb/google/brya/variants/primus: update gpios for power
 consumption

In different sku, some unused GPIO pins are processed by NC for power
consumption.

BUG=b:196790249
TEST=emerge-brya coreboot chromeos-bootimage and check power

Signed-off-by: Malik_Hsu <malik_hsu@wistron.corp-partner.google.com>
Change-Id: I753e41dec1825299e6cd437b5f67e2d957bc6148
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59563
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
---
 .../google/brya/variants/primus/variant.c     | 27 +++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/mainboard/google/brya/variants/primus/variant.c b/src/mainboard/google/brya/variants/primus/variant.c
index e10648d6c3..4c2458acf7 100644
--- a/src/mainboard/google/brya/variants/primus/variant.c
+++ b/src/mainboard/google/brya/variants/primus/variant.c
@@ -5,6 +5,8 @@
 #include <device/device.h>
 #include <drivers/i2c/hid/chip.h>
 #include <fw_config.h>
+#include <gpio.h>
+#include <soc/gpio.h>
 
 static void devtree_update_emmc_rtd3(uint32_t board_ver)
 {
@@ -27,9 +29,34 @@ static void devtree_update_audio_codec(uint32_t board_ver)
 		config->hid = "RTL5682";
 }
 
+static const struct pad_config nvme_disable_pads[] = {
+	PAD_NC(GPP_B2, NONE),	/* B2  : VRALERT# ==> M2_SSD_PLA_L */
+	PAD_NC(GPP_B4, NONE),	/* B4  : PROC_GP3 ==> SSD_PERST_L */
+	PAD_NC(GPP_D3, NONE),	/* D3  : ISH_GP3 ==> M2_SSD_PLN_L */
+	PAD_NC(GPP_D5, NONE),	/* D5  : SRCCLKREQ0# ==> SSD_CLKREQ_ODL */
+	PAD_NC(GPP_D11, NONE),	/* D11 : ISH_SPI_MISO ==> EN_PP3300_SSD */
+};
+
+static const struct pad_config emmc_disable_pads[] = {
+	PAD_NC(GPP_B3, NONE),	/* B3  : PROC_GP2 ==> eMMC_PERST_L */
+	PAD_NC(GPP_E20, NONE),	/* E20 : USB_C1_LSX_SOC_TX ==> EN_PP3300_eMMC */
+	PAD_NC(GPP_F19, NONE),	/* F19 : SRCCLKREQ6# ==> EMMC_CLKREQ_ODL */
+};
+
+static void disable_unused_gpios(void)
+{
+	int emmc_detected = gpio_get(GPP_T2);
+
+	if (emmc_detected == 1)
+		gpio_configure_pads(nvme_disable_pads, ARRAY_SIZE(nvme_disable_pads));
+	else
+		gpio_configure_pads(emmc_disable_pads, ARRAY_SIZE(emmc_disable_pads));
+}
+
 void variant_devtree_update(void)
 {
 	uint32_t board_ver = board_id();
+	disable_unused_gpios();
 	devtree_update_emmc_rtd3(board_ver);
 	devtree_update_audio_codec(board_ver);
 }