2 files changed, 93 insertions, 0 deletions
diff --git a/src/mainboard/google/asurada/Makefile.inc b/src/mainboard/google/asurada/Makefile.inc
index 02fb8300e0..87582b7fbd 100644
--- a/src/mainboard/google/asurada/Makefile.inc
+++ b/src/mainboard/google/asurada/Makefile.inc
@@ -11,6 +11,7 @@ verstage-y += reset.c
 romstage-y += memlayout.ld
 romstage-y += boardid.c
 romstage-y += chromeos.c
+romstage-y += regulator.c
 romstage-y += romstage.c
 romstage-y += sdram_configs.c
 
diff --git a/src/mainboard/google/asurada/regulator.c b/src/mainboard/google/asurada/regulator.c
new file mode 100644
index 0000000000..b06388dc66
--- /dev/null
+++ b/src/mainboard/google/asurada/regulator.c
@@ -0,0 +1,92 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <console/console.h>
+#include <ec/google/chromeec/ec.h>
+#include <soc/mt6359p.h>
+#include <soc/mt6360.h>
+#include <soc/regulator.h>
+
+static int get_mt6360_regulator_id(enum mtk_regulator regulator)
+{
+	switch (regulator) {
+	case MTK_REGULATOR_VDD2:
+		return MT6360_BUCK1;
+	case MTK_REGULATOR_VDDQ:
+		return MT6360_LDO7;
+	case MTK_REGULATOR_VMDDR:
+		return MT6360_LDO6;
+	default:
+		break;
+	}
+
+	return -1;
+}
+
+static int get_mt6359p_regulator_id(enum mtk_regulator regulator)
+{
+	switch (regulator) {
+	case MTK_REGULATOR_VCORE:
+		return MT6359P_GPU11;
+	default:
+		break;
+	}
+
+	return -1;
+}
+
+void mainboard_set_regulator_vol(enum mtk_regulator regulator,
+				 uint32_t voltage_uv)
+{
+	/*
+	 * Handle the regulator that does not have a regulator ID
+	 * in its underlying implementation.
+	 */
+	if (regulator == MTK_REGULATOR_VDD1) {
+		mt6359p_set_vm18_voltage(voltage_uv);
+		return;
+	}
+
+	int id;
+
+	id = get_mt6360_regulator_id(regulator);
+	if (id >= 0) {
+		uint32_t voltage_mv = voltage_uv / 1000;
+		google_chromeec_regulator_set_voltage(id, voltage_mv, voltage_mv);
+		return;
+	}
+
+	id = get_mt6359p_regulator_id(regulator);
+	if (id >= 0) {
+		mt6359p_buck_set_voltage(id, voltage_uv);
+		return;
+	}
+
+	printk(BIOS_WARNING, "Invalid regulator ID: %d\n", regulator);
+}
+
+uint32_t mainboard_get_regulator_vol(enum mtk_regulator regulator)
+{
+	/*
+	 * Handle the regulator that does not have a regulator ID
+	 * in its underlying implementation.
+	 */
+	if (regulator == MTK_REGULATOR_VDD1)
+		return mt6359p_get_vm18_voltage();
+
+	int id;
+
+	id = get_mt6360_regulator_id(regulator);
+	if (id >= 0) {
+		uint32_t voltage_mv = 0;
+		google_chromeec_regulator_get_voltage(id, &voltage_mv);
+		return voltage_mv * 1000;
+	}
+
+	id = get_mt6359p_regulator_id(regulator);
+	if (id >= 0)
+		return mt6359p_buck_get_voltage(id);
+
+	printk(BIOS_WARNING, "Invalid regulator ID: %d\n", regulator);
+
+	return 0;
+}