[coreboot-gerrit] Change in coreboot[master]: mb/google/asurada: Implement enable_requlator and regulator_is_enabled

[Yidi Lin (Code Review)]

Yidi Lin has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/46687 )

Change subject: mb/google/asurada: Implement enable_requlator and regulator_is_enabled
......................................................................

mb/google/asurada: Implement enable_requlator and regulator_is_enabled

SD Card driver needs to access two regulators - MT6360_LDO5 and
MT6360_LDO3. These two regulators are disabled by default.

Two APIs are implemented,
mainboard_enable_requlator - Configure the regulator as enabled / disabled.
mainboard_regulator_is_enabled - Query if the regulator is enabled.

BUG=b:168863056,b:147789962
BRANCH=none
TEST=emerge-asurada coreboot

Change-Id: I391f908fcb33ffdcccc53063644482eabc863ac4
Signed-off-by: Yidi Lin 
---
M src/mainboard/google/asurada/regulator.c
M src/soc/mediatek/common/include/soc/regulator.h
2 files changed, 38 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/87/46687/1

diff --git a/src/mainboard/google/asurada/regulator.c b/src/mainboard/google/asurada/regulator.c
index 740d98b..ecfe4ef 100644
--- a/src/mainboard/google/asurada/regulator.c
+++ b/src/mainboard/google/asurada/regulator.c
@@ -25,6 +25,10 @@
    	return MT6360_LDO7;
    case MTK_REGULATOR_VMDDR:
    	return MT6360_LDO6;
+	case MTK_REGULATOR_VCC:
+		return MT6360_LDO5;
+	case MTK_REGULATOR_VCCQ:
+		return MT6360_LDO3;
    default:
    	break;
    }
@@ -96,3 +100,32 @@

return 0;
 }
+
+void mainboard_enable_requlator(enum mtk_regulator regulator, uint8_t enable)
+{
+	int id;
+
+	id = get_mt6360_regulator_id(regulator);
+	if (id >= 0) {
+		google_chromeec_regulator_enable(id, enable);
+		return;
+	}
+
+	printk(BIOS_WARNING, "Invalid regualtor ID: %d\n", regulator);
+}
+
+uint8_t mainboard_regulator_is_enabled(enum mtk_regulator regulator)
+{
+	int id;
+
+	id = get_mt6360_regulator_id(regulator);
+	if (id >= 0) {
+		uint8_t enabled = 0;
+		google_chromeec_regulator_is_enabled(id, &enabled);
+		return enabled;
+	}
+
+	printk(BIOS_WARNING, "Invalid regualtor ID: %d\n", regulator);
+
+	return 0;
+}
diff --git a/src/soc/mediatek/common/include/soc/regulator.h b/src/soc/mediatek/common/include/soc/regulator.h
index 6d9ff4e..35ce1ac 100644
--- a/src/soc/mediatek/common/include/soc/regulator.h
+++ b/src/soc/mediatek/common/include/soc/regulator.h
@@ -11,10 +11,15 @@
    MTK_REGULATOR_VDDQ,
    MTK_REGULATOR_VMDDR,
    MTK_REGULATOR_VCORE,
+	MTK_REGULATOR_VCC,
+	MTK_REGULATOR_VCCQ,
 };

void mainboard_set_regulator_vol(enum mtk_regulator regulator,
    			 uint32_t voltage_uv);
 uint32_t mainboard_get_regulator_vol(enum mtk_regulator regulator);

+void mainboard_enable_requlator(enum mtk_regulator regulator, uint8_t enable);
+uint8_t mainboard_regulator_is_enabled(enum mtk_regulator regulator);
+
 #endif /* SOC_MEDIATEK_COMMON_REGULATOR_H */