* [PATCH v4 1/2] regulator: mt6360: Add support for MT6360 regulator
2020-08-26 10:49 [PATCH v4 0/2] regulator: mt6360: Add support for MT6360 regulator Gene Chen
@ 2020-08-26 10:49 ` Gene Chen
2020-08-26 10:49 ` [PATCH v4 2/2] dt-bindings: regulator: mt6360: Add DT binding documentation Gene Chen
2020-08-26 12:55 ` [PATCH v4 0/2] regulator: mt6360: Add support for MT6360 regulator Mark Brown
2 siblings, 0 replies; 4+ messages in thread
From: Gene Chen @ 2020-08-26 10:49 UTC (permalink / raw)
To: matthias.bgg, robh+dt
Cc: lgirdwood, broonie, linux-kernel, devicetree, linux-arm-kernel,
linux-mediatek, gene_chen, Wilma.Wu, shufan_lee, cy_huang,
benjamin.chao
From: Gene Chen <gene_chen@richtek.com>
Add MT6360 regulator driver that contains two BUCKs and six LDOs
Signed-off-by: Gene Chen <gene_chen@richtek.com>
---
drivers/regulator/Kconfig | 9 +
drivers/regulator/Makefile | 1 +
drivers/regulator/mt6360-regulator.c | 459 +++++++++++++++++++++
.../regulator/mediatek,mt6360-regulator.h | 16 +
4 files changed, 485 insertions(+)
create mode 100644 drivers/regulator/mt6360-regulator.c
create mode 100644 include/dt-bindings/regulator/mediatek,mt6360-regulator.h
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index de17ef7..8a6c3c6 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -711,6 +711,15 @@ config REGULATOR_MT6358
This driver supports the control of different power rails of device
through regulator interface.
+config REGULATOR_MT6360
+ tristate "MT6360 SubPMIC Regulator"
+ depends on MFD_MT6360
+ help
+ Say Y here to enable MT6360 regulator support.
+ This is support MT6360 PMIC/LDO part include
+ 2-channel buck with Thermal Shutdown and Overload Protection
+ 6-channel High PSRR and Low Dropout LDO.
+
config REGULATOR_MT6380
tristate "MediaTek MT6380 PMIC"
depends on MTK_PMIC_WRAP
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index d8d3ecf..821a33f 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -88,6 +88,7 @@ obj-$(CONFIG_REGULATOR_MPQ7920) += mpq7920.o
obj-$(CONFIG_REGULATOR_MT6311) += mt6311-regulator.o
obj-$(CONFIG_REGULATOR_MT6323) += mt6323-regulator.o
obj-$(CONFIG_REGULATOR_MT6358) += mt6358-regulator.o
+obj-$(CONFIG_REGULATOR_MT6360) += mt6360-regulator.o
obj-$(CONFIG_REGULATOR_MT6380) += mt6380-regulator.o
obj-$(CONFIG_REGULATOR_MT6397) += mt6397-regulator.o
obj-$(CONFIG_REGULATOR_QCOM_LABIBB) += qcom-labibb-regulator.o
diff --git a/drivers/regulator/mt6360-regulator.c b/drivers/regulator/mt6360-regulator.c
new file mode 100644
index 0000000..89ce379
--- /dev/null
+++ b/drivers/regulator/mt6360-regulator.c
@@ -0,0 +1,459 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright (C) 2020 MediaTek Inc.
+//
+// Author: Gene Chen <gene_chen@richtek.com>
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+
+#include <dt-bindings/regulator/mediatek,mt6360-regulator.h>
+
+enum {
+ MT6360_REGULATOR_BUCK1 = 0,
+ MT6360_REGULATOR_BUCK2,
+ MT6360_REGULATOR_LDO6,
+ MT6360_REGULATOR_LDO7,
+ MT6360_REGULATOR_LDO1,
+ MT6360_REGULATOR_LDO2,
+ MT6360_REGULATOR_LDO3,
+ MT6360_REGULATOR_LDO5,
+ MT6360_REGULATOR_MAX,
+};
+
+struct mt6360_irq_mapping {
+ const char *name;
+ irq_handler_t handler;
+};
+
+struct mt6360_regulator_desc {
+ const struct regulator_desc desc;
+ unsigned int mode_reg;
+ unsigned int mode_mask;
+ unsigned int state_reg;
+ unsigned int state_mask;
+ const struct mt6360_irq_mapping *irq_tables;
+ int irq_table_size;
+};
+
+struct mt6360_regulator_data {
+ struct device *dev;
+ struct regmap *regmap;
+};
+
+static irqreturn_t mt6360_pgb_event_handler(int irq, void *data)
+{
+ struct regulator_dev *rdev = data;
+
+ regulator_notifier_call_chain(rdev, REGULATOR_EVENT_FAIL, NULL);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t mt6360_oc_event_handler(int irq, void *data)
+{
+ struct regulator_dev *rdev = data;
+
+ regulator_notifier_call_chain(rdev, REGULATOR_EVENT_OVER_CURRENT, NULL);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t mt6360_ov_event_handler(int irq, void *data)
+{
+ struct regulator_dev *rdev = data;
+
+ regulator_notifier_call_chain(rdev, REGULATOR_EVENT_REGULATION_OUT, NULL);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t mt6360_uv_event_handler(int irq, void *data)
+{
+ struct regulator_dev *rdev = data;
+
+ regulator_notifier_call_chain(rdev, REGULATOR_EVENT_UNDER_VOLTAGE, NULL);
+ return IRQ_HANDLED;
+}
+
+static const struct mt6360_irq_mapping buck1_irq_tbls[] = {
+ { "buck1_pgb_evt", mt6360_pgb_event_handler },
+ { "buck1_oc_evt", mt6360_oc_event_handler },
+ { "buck1_ov_evt", mt6360_ov_event_handler },
+ { "buck1_uv_evt", mt6360_uv_event_handler },
+};
+
+static const struct mt6360_irq_mapping buck2_irq_tbls[] = {
+ { "buck2_pgb_evt", mt6360_pgb_event_handler },
+ { "buck2_oc_evt", mt6360_oc_event_handler },
+ { "buck2_ov_evt", mt6360_ov_event_handler },
+ { "buck2_uv_evt", mt6360_uv_event_handler },
+};
+
+static const struct mt6360_irq_mapping ldo6_irq_tbls[] = {
+ { "ldo6_pgb_evt", mt6360_pgb_event_handler },
+ { "ldo6_oc_evt", mt6360_oc_event_handler },
+};
+
+static const struct mt6360_irq_mapping ldo7_irq_tbls[] = {
+ { "ldo7_pgb_evt", mt6360_pgb_event_handler },
+ { "ldo7_oc_evt", mt6360_oc_event_handler },
+};
+
+static const struct mt6360_irq_mapping ldo1_irq_tbls[] = {
+ { "ldo1_pgb_evt", mt6360_pgb_event_handler },
+ { "ldo1_oc_evt", mt6360_oc_event_handler },
+};
+
+static const struct mt6360_irq_mapping ldo2_irq_tbls[] = {
+ { "ldo2_pgb_evt", mt6360_pgb_event_handler },
+ { "ldo2_oc_evt", mt6360_oc_event_handler },
+};
+
+static const struct mt6360_irq_mapping ldo3_irq_tbls[] = {
+ { "ldo3_pgb_evt", mt6360_pgb_event_handler },
+ { "ldo3_oc_evt", mt6360_oc_event_handler },
+};
+
+static const struct mt6360_irq_mapping ldo5_irq_tbls[] = {
+ { "ldo5_pgb_evt", mt6360_pgb_event_handler },
+ { "ldo5_oc_evt", mt6360_oc_event_handler },
+};
+
+static const struct linear_range buck_vout_ranges[] = {
+ REGULATOR_LINEAR_RANGE(300000, 0x00, 0xc7, 5000),
+ REGULATOR_LINEAR_RANGE(1300000, 0xc8, 0xff, 0),
+};
+
+static const struct linear_range ldo_vout_ranges1[] = {
+ REGULATOR_LINEAR_RANGE(500000, 0x00, 0x09, 10000),
+ REGULATOR_LINEAR_RANGE(600000, 0x0a, 0x10, 0),
+ REGULATOR_LINEAR_RANGE(610000, 0x11, 0x19, 10000),
+ REGULATOR_LINEAR_RANGE(700000, 0x1a, 0x20, 0),
+ REGULATOR_LINEAR_RANGE(710000, 0x21, 0x29, 10000),
+ REGULATOR_LINEAR_RANGE(800000, 0x2a, 0x30, 0),
+ REGULATOR_LINEAR_RANGE(810000, 0x31, 0x39, 10000),
+ REGULATOR_LINEAR_RANGE(900000, 0x3a, 0x40, 0),
+ REGULATOR_LINEAR_RANGE(910000, 0x41, 0x49, 10000),
+ REGULATOR_LINEAR_RANGE(1000000, 0x4a, 0x50, 0),
+ REGULATOR_LINEAR_RANGE(1010000, 0x51, 0x59, 10000),
+ REGULATOR_LINEAR_RANGE(1100000, 0x5a, 0x60, 0),
+ REGULATOR_LINEAR_RANGE(1110000, 0x61, 0x69, 10000),
+ REGULATOR_LINEAR_RANGE(1200000, 0x6a, 0x70, 0),
+ REGULATOR_LINEAR_RANGE(1210000, 0x71, 0x79, 10000),
+ REGULATOR_LINEAR_RANGE(1300000, 0x7a, 0x80, 0),
+ REGULATOR_LINEAR_RANGE(1310000, 0x81, 0x89, 10000),
+ REGULATOR_LINEAR_RANGE(1400000, 0x8a, 0x90, 0),
+ REGULATOR_LINEAR_RANGE(1410000, 0x91, 0x99, 10000),
+ REGULATOR_LINEAR_RANGE(1500000, 0x9a, 0xa0, 0),
+ REGULATOR_LINEAR_RANGE(1510000, 0xa1, 0xa9, 10000),
+ REGULATOR_LINEAR_RANGE(1600000, 0xaa, 0xb0, 0),
+ REGULATOR_LINEAR_RANGE(1610000, 0xb1, 0xb9, 10000),
+ REGULATOR_LINEAR_RANGE(1700000, 0xba, 0xc0, 0),
+ REGULATOR_LINEAR_RANGE(1710000, 0xc1, 0xc9, 10000),
+ REGULATOR_LINEAR_RANGE(1800000, 0xca, 0xd0, 0),
+ REGULATOR_LINEAR_RANGE(1810000, 0xd1, 0xd9, 10000),
+ REGULATOR_LINEAR_RANGE(1900000, 0xda, 0xe0, 0),
+ REGULATOR_LINEAR_RANGE(1910000, 0xe1, 0xe9, 10000),
+ REGULATOR_LINEAR_RANGE(2000000, 0xea, 0xf0, 0),
+ REGULATOR_LINEAR_RANGE(2010000, 0xf1, 0xf9, 10000),
+ REGULATOR_LINEAR_RANGE(2100000, 0xfa, 0xff, 0),
+};
+
+static const struct linear_range ldo_vout_ranges2[] = {
+ REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x09, 10000),
+ REGULATOR_LINEAR_RANGE(1300000, 0x0a, 0x10, 0),
+ REGULATOR_LINEAR_RANGE(1310000, 0x11, 0x19, 10000),
+ REGULATOR_LINEAR_RANGE(1400000, 0x1a, 0x1f, 0),
+ REGULATOR_LINEAR_RANGE(1500000, 0x20, 0x29, 10000),
+ REGULATOR_LINEAR_RANGE(1600000, 0x2a, 0x2f, 0),
+ REGULATOR_LINEAR_RANGE(1700000, 0x30, 0x39, 10000),
+ REGULATOR_LINEAR_RANGE(1800000, 0x3a, 0x40, 0),
+ REGULATOR_LINEAR_RANGE(1810000, 0x41, 0x49, 10000),
+ REGULATOR_LINEAR_RANGE(1900000, 0x4a, 0x4f, 0),
+ REGULATOR_LINEAR_RANGE(2000000, 0x50, 0x59, 10000),
+ REGULATOR_LINEAR_RANGE(2100000, 0x5a, 0x60, 0),
+ REGULATOR_LINEAR_RANGE(2110000, 0x61, 0x69, 10000),
+ REGULATOR_LINEAR_RANGE(2200000, 0x6a, 0x6f, 0),
+ REGULATOR_LINEAR_RANGE(2500000, 0x70, 0x79, 10000),
+ REGULATOR_LINEAR_RANGE(2600000, 0x7a, 0x7f, 0),
+ REGULATOR_LINEAR_RANGE(2700000, 0x80, 0x89, 10000),
+ REGULATOR_LINEAR_RANGE(2800000, 0x8a, 0x90, 0),
+ REGULATOR_LINEAR_RANGE(2810000, 0x91, 0x99, 10000),
+ REGULATOR_LINEAR_RANGE(2900000, 0x9a, 0xa0, 0),
+ REGULATOR_LINEAR_RANGE(2910000, 0xa1, 0xa9, 10000),
+ REGULATOR_LINEAR_RANGE(3000000, 0xaa, 0xb0, 0),
+ REGULATOR_LINEAR_RANGE(3010000, 0xb1, 0xb9, 10000),
+ REGULATOR_LINEAR_RANGE(3100000, 0xba, 0xc0, 0),
+ REGULATOR_LINEAR_RANGE(3110000, 0xc1, 0xc9, 10000),
+ REGULATOR_LINEAR_RANGE(3200000, 0xca, 0xcf, 0),
+ REGULATOR_LINEAR_RANGE(3300000, 0xd0, 0xd9, 10000),
+ REGULATOR_LINEAR_RANGE(3400000, 0xda, 0xe0, 0),
+ REGULATOR_LINEAR_RANGE(3410000, 0xe1, 0xe9, 10000),
+ REGULATOR_LINEAR_RANGE(3500000, 0xea, 0xf0, 0),
+ REGULATOR_LINEAR_RANGE(3510000, 0xf1, 0xf9, 10000),
+ REGULATOR_LINEAR_RANGE(3600000, 0xfa, 0xff, 0),
+};
+
+static const struct linear_range ldo_vout_ranges3[] = {
+ REGULATOR_LINEAR_RANGE(2700000, 0x00, 0x09, 10000),
+ REGULATOR_LINEAR_RANGE(2800000, 0x0a, 0x10, 0),
+ REGULATOR_LINEAR_RANGE(2810000, 0x11, 0x19, 10000),
+ REGULATOR_LINEAR_RANGE(2900000, 0x1a, 0x20, 0),
+ REGULATOR_LINEAR_RANGE(2910000, 0x21, 0x29, 10000),
+ REGULATOR_LINEAR_RANGE(3000000, 0x2a, 0x30, 0),
+ REGULATOR_LINEAR_RANGE(3010000, 0x31, 0x39, 10000),
+ REGULATOR_LINEAR_RANGE(3100000, 0x3a, 0x40, 0),
+ REGULATOR_LINEAR_RANGE(3110000, 0x41, 0x49, 10000),
+ REGULATOR_LINEAR_RANGE(3200000, 0x4a, 0x4f, 0),
+ REGULATOR_LINEAR_RANGE(3300000, 0x50, 0x59, 10000),
+ REGULATOR_LINEAR_RANGE(3400000, 0x5a, 0x60, 0),
+ REGULATOR_LINEAR_RANGE(3410000, 0x61, 0x69, 10000),
+ REGULATOR_LINEAR_RANGE(3500000, 0x6a, 0x70, 0),
+ REGULATOR_LINEAR_RANGE(3510000, 0x71, 0x79, 10000),
+ REGULATOR_LINEAR_RANGE(3600000, 0x7a, 0x7f, 0),
+};
+
+static int mt6360_regulator_set_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+{
+ const struct mt6360_regulator_desc *rdesc = (struct mt6360_regulator_desc *)rdev->desc;
+ struct regmap *regmap = rdev_get_regmap(rdev);
+ int shift = ffs(rdesc->mode_mask) - 1;
+ unsigned int val;
+ int ret;
+
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ val = MT6360_OPMODE_NORMAL;
+ break;
+ case REGULATOR_MODE_STANDBY:
+ val = MT6360_OPMODE_ULP;
+ break;
+ case REGULATOR_MODE_IDLE:
+ val = MT6360_OPMODE_LP;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = regmap_update_bits(regmap, rdesc->mode_reg, rdesc->mode_mask, val << shift);
+ if (ret) {
+ dev_err(&rdev->dev, "%s: fail (%d)\n", __func__, ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static unsigned int mt6360_regulator_get_mode(struct regulator_dev *rdev)
+{
+ const struct mt6360_regulator_desc *rdesc = (struct mt6360_regulator_desc *)rdev->desc;
+ struct regmap *regmap = rdev_get_regmap(rdev);
+ int shift = ffs(rdesc->mode_mask) - 1;
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(regmap, rdesc->mode_reg, &val);
+ if (ret)
+ return ret;
+
+ val &= rdesc->mode_mask;
+ val >>= shift;
+
+ switch (val) {
+ case MT6360_OPMODE_LP:
+ return REGULATOR_MODE_IDLE;
+ case MT6360_OPMODE_ULP:
+ return REGULATOR_MODE_STANDBY;
+ case MT6360_OPMODE_NORMAL:
+ return REGULATOR_MODE_NORMAL;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int mt6360_regulator_get_status(struct regulator_dev *rdev)
+{
+ const struct mt6360_regulator_desc *rdesc = (struct mt6360_regulator_desc *)rdev->desc;
+ struct regmap *regmap = rdev_get_regmap(rdev);
+ unsigned int val;
+ int ret;
+
+ ret = regmap_read(regmap, rdesc->state_reg, &val);
+ if (ret)
+ return ret;
+
+ if (val & rdesc->state_mask)
+ return REGULATOR_STATUS_ON;
+
+ return REGULATOR_STATUS_OFF;
+}
+
+static const struct regulator_ops mt6360_regulator_ops = {
+ .list_voltage = regulator_list_voltage_linear_range,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_mode = mt6360_regulator_set_mode,
+ .get_mode = mt6360_regulator_get_mode,
+ .get_status = mt6360_regulator_get_status,
+};
+
+static unsigned int mt6360_regulator_of_map_mode(unsigned int hw_mode)
+{
+ switch (hw_mode) {
+ case MT6360_OPMODE_NORMAL:
+ return REGULATOR_MODE_NORMAL;
+ case MT6360_OPMODE_LP:
+ return REGULATOR_MODE_IDLE;
+ case MT6360_OPMODE_ULP:
+ return REGULATOR_MODE_STANDBY;
+ default:
+ return REGULATOR_MODE_INVALID;
+ }
+}
+
+#define MT6360_REGULATOR_DESC(_name, _sname, ereg, emask, vreg, vmask, \
+ mreg, mmask, streg, stmask, vranges, \
+ vcnts, offon_delay, irq_tbls) \
+{ \
+ .desc = { \
+ .name = #_name, \
+ .supply_name = #_sname, \
+ .id = MT6360_REGULATOR_##_name, \
+ .of_match = of_match_ptr(#_name), \
+ .regulators_node = of_match_ptr("regulator"), \
+ .of_map_mode = mt6360_regulator_of_map_mode, \
+ .owner = THIS_MODULE, \
+ .ops = &mt6360_regulator_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .vsel_reg = vreg, \
+ .vsel_mask = vmask, \
+ .enable_reg = ereg, \
+ .enable_mask = emask, \
+ .linear_ranges = vranges, \
+ .n_linear_ranges = ARRAY_SIZE(vranges), \
+ .n_voltages = vcnts, \
+ .off_on_delay = offon_delay, \
+ }, \
+ .mode_reg = mreg, \
+ .mode_mask = mmask, \
+ .state_reg = streg, \
+ .state_mask = stmask, \
+ .irq_tables = irq_tbls, \
+ .irq_table_size = ARRAY_SIZE(irq_tbls), \
+}
+
+static const struct mt6360_regulator_desc mt6360_regulator_descs[] = {
+ MT6360_REGULATOR_DESC(BUCK1, BUCK1_VIN, 0x117, 0x40, 0x110, 0xff, 0x117, 0x30, 0x117, 0x04,
+ buck_vout_ranges, 256, 0, buck1_irq_tbls),
+ MT6360_REGULATOR_DESC(BUCK2, BUCK2_VIN, 0x127, 0x40, 0x120, 0xff, 0x127, 0x30, 0x127, 0x04,
+ buck_vout_ranges, 256, 0, buck2_irq_tbls),
+ MT6360_REGULATOR_DESC(LDO6, LDO_VIN3, 0x137, 0x40, 0x13B, 0xff, 0x137, 0x30, 0x137, 0x04,
+ ldo_vout_ranges1, 256, 0, ldo6_irq_tbls),
+ MT6360_REGULATOR_DESC(LDO7, LDO_VIN3, 0x131, 0x40, 0x135, 0xff, 0x131, 0x30, 0x131, 0x04,
+ ldo_vout_ranges1, 256, 0, ldo7_irq_tbls),
+ MT6360_REGULATOR_DESC(LDO1, LDO_VIN1, 0x217, 0x40, 0x21B, 0xff, 0x217, 0x30, 0x217, 0x04,
+ ldo_vout_ranges2, 256, 0, ldo1_irq_tbls),
+ MT6360_REGULATOR_DESC(LDO2, LDO_VIN1, 0x211, 0x40, 0x215, 0xff, 0x211, 0x30, 0x211, 0x04,
+ ldo_vout_ranges2, 256, 0, ldo2_irq_tbls),
+ MT6360_REGULATOR_DESC(LDO3, LDO_VIN1, 0x205, 0x40, 0x209, 0xff, 0x205, 0x30, 0x205, 0x04,
+ ldo_vout_ranges2, 256, 100, ldo3_irq_tbls),
+ MT6360_REGULATOR_DESC(LDO5, LDO_VIN2, 0x20B, 0x40, 0x20F, 0x7f, 0x20B, 0x30, 0x20B, 0x04,
+ ldo_vout_ranges3, 128, 100, ldo5_irq_tbls),
+};
+
+static int mt6360_regulator_irq_register(struct platform_device *pdev,
+ struct regulator_dev *rdev,
+ const struct mt6360_irq_mapping *tbls,
+ int tbl_size)
+{
+ int i, irq, ret;
+
+ for (i = 0; i < tbl_size; i++) {
+ const struct mt6360_irq_mapping *irq_desc = tbls + i;
+
+ irq = platform_get_irq_byname(pdev, irq_desc->name);
+ if (irq < 0) {
+ dev_err(&pdev->dev, "Fail to get %s irq\n", irq_desc->name);
+ return irq;
+ }
+
+ ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, irq_desc->handler, 0,
+ irq_desc->name, rdev);
+ if (ret) {
+ dev_err(&pdev->dev, "Fail to request %s irq\n", irq_desc->name);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static int mt6360_regulator_probe(struct platform_device *pdev)
+{
+ struct mt6360_regulator_data *mrd;
+ struct regulator_config config = {};
+ int i, ret;
+
+ mrd = devm_kzalloc(&pdev->dev, sizeof(*mrd), GFP_KERNEL);
+ if (!mrd)
+ return -ENOMEM;
+
+ mrd->dev = &pdev->dev;
+
+ mrd->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!mrd->regmap) {
+ dev_err(&pdev->dev, "Failed to get parent regmap\n");
+ return -ENODEV;
+ }
+
+ config.dev = pdev->dev.parent;
+ config.driver_data = mrd;
+ config.regmap = mrd->regmap;
+
+ for (i = 0; i < ARRAY_SIZE(mt6360_regulator_descs); i++) {
+ const struct mt6360_regulator_desc *rdesc = mt6360_regulator_descs + i;
+ struct regulator_dev *rdev;
+
+ rdev = devm_regulator_register(&pdev->dev, &rdesc->desc, &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "Failed to register %d regulaotr\n", i);
+ return PTR_ERR(rdev);
+ }
+
+ ret = mt6360_regulator_irq_register(pdev, rdev, rdesc->irq_tables,
+ rdesc->irq_table_size);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register %d regulaotr irqs\n", i);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+static const struct platform_device_id mt6360_regulator_id_table[] = {
+ { "mt6360-regulator", 0 },
+ {},
+};
+MODULE_DEVICE_TABLE(platform, mt6360_regulator_id_table);
+
+static struct platform_driver mt6360_regulator_driver = {
+ .driver = {
+ .name = "mt6360-regulator",
+ },
+ .probe = mt6360_regulator_probe,
+ .id_table = mt6360_regulator_id_table,
+};
+module_platform_driver(mt6360_regulator_driver);
+
+MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>");
+MODULE_DESCRIPTION("MT6360 Regulator Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/dt-bindings/regulator/mediatek,mt6360-regulator.h b/include/dt-bindings/regulator/mediatek,mt6360-regulator.h
new file mode 100644
index 0000000..21c75de
--- /dev/null
+++ b/include/dt-bindings/regulator/mediatek,mt6360-regulator.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __DT_BINDINGS_MEDIATEK_MT6360_REGULATOR_H__
+#define __DT_BINDINGS_MEDIATEK_MT6360_REGULATOR_H__
+
+/*
+ * BUCK/LDO mode constants which may be used in devicetree properties
+ * (eg. regulator-allowed-modes).
+ * See the manufacturer's datasheet for more information on these modes.
+ */
+
+#define MT6360_OPMODE_LP 2
+#define MT6360_OPMODE_ULP 3
+#define MT6360_OPMODE_NORMAL 0
+
+#endif
--
2.7.4
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