[PATCH 3/4] regulator: Add regulator driver for ATC260x PMICs

From: Manivannan Sadhasivam
Date: Mon Jun 17 2019 - 11:55:47 EST

Add regulator driver for Actions Semi ATC260x PMICs. This driver
supports 5 DC-DC converters and 10 LDO regulators found in ATC2609A
PMIC variant.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
---
drivers/regulator/Kconfig | 8 +
drivers/regulator/Makefile | 1 +
drivers/regulator/atc260x-regulator.c | 389 ++++++++++++++++++++++++++
3 files changed, 398 insertions(+)
create mode 100644 drivers/regulator/atc260x-regulator.c

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 8553bdf87c1d..acaf447ecdc6 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -166,6 +166,14 @@ config REGULATOR_AS3722
AS3722 PMIC. This will enable support for all the software
controllable DCDC/LDO regulators.

+config REGULATOR_ATC260X
+ tristate "Actions Semi ATC260x PMIC Regulators"
+ depends on MFD_ATC260X
+ help
+ This driver provides support for the voltage regulators on the
+ ATC260x PMICs. This will enable support for all the software
+ controllable DCDC/LDO regulators.
+
config REGULATOR_AXP20X
tristate "X-POWERS AXP20X PMIC Regulators"
depends on MFD_AXP20X
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 93f53840e8f1..600d01d082a3 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_REGULATOR_ARIZONA_LDO1) += arizona-ldo1.o
obj-$(CONFIG_REGULATOR_ARIZONA_MICSUPP) += arizona-micsupp.o
obj-$(CONFIG_REGULATOR_AS3711) += as3711-regulator.o
obj-$(CONFIG_REGULATOR_AS3722) += as3722-regulator.o
+obj-$(CONFIG_REGULATOR_ATC260X) += atc260x-regulator.o
obj-$(CONFIG_REGULATOR_AXP20X) += axp20x-regulator.o
obj-$(CONFIG_REGULATOR_BCM590XX) += bcm590xx-regulator.o
obj-$(CONFIG_REGULATOR_BD70528) += bd70528-regulator.o
diff --git a/drivers/regulator/atc260x-regulator.c b/drivers/regulator/atc260x-regulator.c
new file mode 100644
index 000000000000..e9e11f2567b2
--- /dev/null
+++ b/drivers/regulator/atc260x-regulator.c
@@ -0,0 +1,389 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Regulator driver for ATC260x PMICs
+ *
+ * Copyright (C) 2019 Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
+ */
+
+#include <linux/mfd/atc260x/core.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+
+#define ATC2609A_DCDC_VSEL_MASK 0xff00
+#define ATC2609A_DCDC_MIN_UV 600000
+#define ATC2609A_DCDC_UV_STEP 6250
+#define ATC2609A_DCDC_NR_VOLT 256
+
+#define ATC2609A_LDO_VSEL_MASK0 0x003c
+#define ATC2609A_LDO_VSEL_MASK1 0x001e
+#define ATC2609A_LDO_VSEL_MASK2 0xe000
+#define ATC2609A_LDO_VSEL_RANGE_MASK 0x0020
+
+static const struct regulator_linear_range atc260x_ldo_voltage_ranges0[] = {
+ REGULATOR_LINEAR_RANGE(700000, 0, 15, 100000),
+ REGULATOR_LINEAR_RANGE(2100000, 16, 28, 100000),
+};
+
+static const struct regulator_linear_range atc260x_ldo_voltage_ranges1[] = {
+ REGULATOR_LINEAR_RANGE(850000, 0, 15, 100000),
+ REGULATOR_LINEAR_RANGE(2100000, 16, 27, 100000),
+};
+
+static const unsigned int atc260x_ldo_voltage_range_sel[] = {
+ 0x0, 0x1,
+};
+
+static const struct regulator_linear_range atc260x_dcdc_voltage_ranges[] = {
+ REGULATOR_LINEAR_RANGE(600000, 0, 127, 6250),
+ REGULATOR_LINEAR_RANGE(1400000, 128, 232, 25000),
+};
+
+static const struct regulator_ops atc260x_reg_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+};
+
+static const struct regulator_ops atc260x_reg_fixed_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+};
+
+static const struct regulator_ops atc260x_reg_range0_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_pickable_linear_range,
+ .set_voltage_sel = regulator_set_voltage_sel_pickable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_pickable_regmap,
+};
+
+static const struct regulator_ops atc260x_reg_range1_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+};
+
+static const struct regulator_desc atc2609a_reg[] = {
+ {
+ .name = "DCDC_REG0",
+ .supply_name = "vcc0",
+ .of_match = of_match_ptr("DCDC_REG0"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_DCDC0,
+ .ops = &atc260x_reg_ops,
+ .type = REGULATOR_VOLTAGE,
+ .min_uV = ATC2609A_DCDC_MIN_UV,
+ .uV_step = ATC2609A_DCDC_UV_STEP,
+ .n_voltages = ATC2609A_DCDC_NR_VOLT,
+ .vsel_reg = ATC2609A_PMU_DC0_CTL0,
+ .vsel_mask = ATC2609A_DCDC_VSEL_MASK,
+ .enable_reg = ATC2609A_PMU_DC_OSC,
+ .enable_mask = BIT(4),
+ .enable_time = 800,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "DCDC_REG1",
+ .supply_name = "vcc1",
+ .of_match = of_match_ptr("DCDC_REG1"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_DCDC1,
+ .ops = &atc260x_reg_ops,
+ .type = REGULATOR_VOLTAGE,
+ .min_uV = ATC2609A_DCDC_MIN_UV,
+ .uV_step = ATC2609A_DCDC_UV_STEP,
+ .n_voltages = ATC2609A_DCDC_NR_VOLT,
+ .vsel_reg = ATC2609A_PMU_DC1_CTL0,
+ .vsel_mask = ATC2609A_DCDC_VSEL_MASK,
+ .enable_reg = ATC2609A_PMU_DC_OSC,
+ .enable_mask = BIT(5),
+ .enable_time = 800,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "DCDC_REG2",
+ .supply_name = "vcc2",
+ .of_match = of_match_ptr("DCDC_REG2"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_DCDC2,
+ .ops = &atc260x_reg_ops,
+ .type = REGULATOR_VOLTAGE,
+ .min_uV = ATC2609A_DCDC_MIN_UV,
+ .uV_step = ATC2609A_DCDC_UV_STEP,
+ .n_voltages = ATC2609A_DCDC_NR_VOLT,
+ .vsel_reg = ATC2609A_PMU_DC2_CTL0,
+ .vsel_mask = ATC2609A_DCDC_VSEL_MASK,
+ .enable_reg = ATC2609A_PMU_DC_OSC,
+ .enable_mask = BIT(6),
+ .enable_time = 800,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "DCDC_REG3",
+ .supply_name = "vcc3",
+ .of_match = of_match_ptr("DCDC_REG3"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_DCDC3,
+ .ops = &atc260x_reg_range1_ops,
+ .type = REGULATOR_VOLTAGE,
+ .n_voltages = 233,
+ .linear_ranges = atc260x_dcdc_voltage_ranges,
+ .n_linear_ranges = ARRAY_SIZE(atc260x_dcdc_voltage_ranges),
+ .vsel_reg = ATC2609A_PMU_DC3_CTL0,
+ .vsel_mask = ATC2609A_DCDC_VSEL_MASK,
+ .enable_reg = ATC2609A_PMU_DC_OSC,
+ .enable_mask = BIT(7),
+ .enable_time = 800,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "DCDC_REG4",
+ .supply_name = "vcc4",
+ .of_match = of_match_ptr("DCDC_REG4"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_DCDC4,
+ .ops = &atc260x_reg_ops,
+ .type = REGULATOR_VOLTAGE,
+ .min_uV = ATC2609A_DCDC_MIN_UV,
+ .uV_step = ATC2609A_DCDC_UV_STEP,
+ .n_voltages = ATC2609A_DCDC_NR_VOLT,
+ .vsel_reg = ATC2609A_PMU_DC4_CTL0,
+ .vsel_mask = ATC2609A_DCDC_VSEL_MASK,
+ .enable_reg = ATC2609A_PMU_DC_OSC,
+ .enable_mask = BIT(8),
+ .enable_time = 800,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "LDO_REG0",
+ .supply_name = "vcc5",
+ .of_match = of_match_ptr("LDO_REG0"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_LDO0,
+ .ops = &atc260x_reg_ops,
+ .type = REGULATOR_VOLTAGE,
+ .min_uV = 2300000,
+ .uV_step = 100000,
+ .n_voltages = 12,
+ .vsel_reg = ATC2609A_PMU_LDO0_CTL0,
+ .vsel_mask = ATC2609A_LDO_VSEL_MASK0,
+ .enable_reg = ATC2609A_PMU_LDO0_CTL0,
+ .enable_mask = BIT(0),
+ .enable_time = 2000,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "LDO_REG1",
+ .supply_name = "vcc6",
+ .of_match = of_match_ptr("LDO_REG1"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_LDO1,
+ .ops = &atc260x_reg_ops,
+ .type = REGULATOR_VOLTAGE,
+ .min_uV = 2300000,
+ .uV_step = 100000,
+ .n_voltages = 12,
+ .vsel_reg = ATC2609A_PMU_LDO1_CTL0,
+ .vsel_mask = ATC2609A_LDO_VSEL_MASK0,
+ .enable_reg = ATC2609A_PMU_LDO1_CTL0,
+ .enable_mask = BIT(0),
+ .enable_time = 2000,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "LDO_REG2",
+ .supply_name = "vcc7",
+ .of_match = of_match_ptr("LDO_REG2"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_LDO2,
+ .ops = &atc260x_reg_ops,
+ .type = REGULATOR_VOLTAGE,
+ .min_uV = 2300000,
+ .uV_step = 100000,
+ .n_voltages = 12,
+ .vsel_reg = ATC2609A_PMU_LDO2_CTL0,
+ .vsel_mask = ATC2609A_LDO_VSEL_MASK0,
+ .enable_reg = ATC2609A_PMU_LDO2_CTL0,
+ .enable_mask = BIT(0),
+ .enable_time = 2000,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "LDO_REG3",
+ .supply_name = "vcc8",
+ .of_match = of_match_ptr("LDO_REG3"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_LDO3,
+ .ops = &atc260x_reg_range0_ops,
+ .type = REGULATOR_VOLTAGE,
+ .linear_ranges = atc260x_ldo_voltage_ranges0,
+ .n_linear_ranges = ARRAY_SIZE(atc260x_ldo_voltage_ranges0),
+ .vsel_reg = ATC2609A_PMU_LDO3_CTL0,
+ .vsel_mask = ATC2609A_LDO_VSEL_MASK1,
+ .vsel_range_reg = ATC2609A_PMU_LDO3_CTL0,
+ .vsel_range_mask = ATC2609A_LDO_VSEL_RANGE_MASK,
+ .linear_range_selectors = atc260x_ldo_voltage_range_sel,
+ .enable_reg = ATC2609A_PMU_LDO3_CTL0,
+ .enable_mask = BIT(0),
+ .enable_time = 2000,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "LDO_REG4",
+ .supply_name = "vcc9",
+ .of_match = of_match_ptr("LDO_REG4"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_LDO4,
+ .ops = &atc260x_reg_range0_ops,
+ .type = REGULATOR_VOLTAGE,
+ .linear_ranges = atc260x_ldo_voltage_ranges0,
+ .n_linear_ranges = ARRAY_SIZE(atc260x_ldo_voltage_ranges0),
+ .vsel_reg = ATC2609A_PMU_LDO4_CTL0,
+ .vsel_mask = ATC2609A_LDO_VSEL_MASK1,
+ .vsel_range_reg = ATC2609A_PMU_LDO4_CTL0,
+ .vsel_range_mask = ATC2609A_LDO_VSEL_RANGE_MASK,
+ .linear_range_selectors = atc260x_ldo_voltage_range_sel,
+ .enable_reg = ATC2609A_PMU_LDO4_CTL0,
+ .enable_mask = BIT(0),
+ .enable_time = 2000,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "LDO_REG5",
+ .supply_name = "vcc10",
+ .of_match = of_match_ptr("LDO_REG5"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_LDO5,
+ .ops = &atc260x_reg_ops,
+ .type = REGULATOR_VOLTAGE,
+ .min_uV = 700000,
+ .uV_step = 100000,
+ .n_voltages = 16,
+ .vsel_reg = ATC2609A_PMU_LDO5_CTL0,
+ .vsel_mask = ATC2609A_LDO_VSEL_MASK1,
+ .enable_reg = ATC2609A_PMU_LDO5_CTL0,
+ .enable_mask = BIT(0),
+ .enable_time = 2000,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "LDO_REG6",
+ .supply_name = "vcc11",
+ .of_match = of_match_ptr("LDO_REG6"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_LDO6,
+ .ops = &atc260x_reg_range0_ops,
+ .type = REGULATOR_VOLTAGE,
+ .linear_ranges = atc260x_ldo_voltage_ranges1,
+ .n_linear_ranges = ARRAY_SIZE(atc260x_ldo_voltage_ranges1),
+ .vsel_reg = ATC2609A_PMU_LDO6_CTL0,
+ .vsel_mask = ATC2609A_LDO_VSEL_MASK1,
+ .vsel_range_reg = ATC2609A_PMU_LDO6_CTL0,
+ .vsel_range_mask = ATC2609A_LDO_VSEL_RANGE_MASK,
+ .linear_range_selectors = atc260x_ldo_voltage_range_sel,
+ .enable_reg = ATC2609A_PMU_LDO6_CTL0,
+ .enable_mask = BIT(0),
+ .enable_time = 2000,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "LDO_REG7",
+ .supply_name = "vcc12",
+ .of_match = of_match_ptr("LDO_REG7"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_LDO7,
+ .ops = &atc260x_reg_range0_ops,
+ .type = REGULATOR_VOLTAGE,
+ .linear_ranges = atc260x_ldo_voltage_ranges0,
+ .n_linear_ranges = ARRAY_SIZE(atc260x_ldo_voltage_ranges0),
+ .vsel_reg = ATC2609A_PMU_LDO7_CTL0,
+ .vsel_mask = ATC2609A_LDO_VSEL_MASK1,
+ .vsel_range_reg = ATC2609A_PMU_LDO7_CTL0,
+ .vsel_range_mask = ATC2609A_LDO_VSEL_RANGE_MASK,
+ .linear_range_selectors = atc260x_ldo_voltage_range_sel,
+ .enable_reg = ATC2609A_PMU_LDO7_CTL0,
+ .enable_mask = BIT(0),
+ .enable_time = 2000,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "LDO_REG8",
+ .supply_name = "vcc13",
+ .of_match = of_match_ptr("LDO_REG8"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_LDO8,
+ .ops = &atc260x_reg_range0_ops,
+ .type = REGULATOR_VOLTAGE,
+ .linear_ranges = atc260x_ldo_voltage_ranges0,
+ .n_linear_ranges = ARRAY_SIZE(atc260x_ldo_voltage_ranges0),
+ .vsel_reg = ATC2609A_PMU_LDO8_CTL0,
+ .vsel_mask = ATC2609A_LDO_VSEL_MASK1,
+ .vsel_range_reg = ATC2609A_PMU_LDO8_CTL0,
+ .vsel_range_mask = ATC2609A_LDO_VSEL_RANGE_MASK,
+ .linear_range_selectors = atc260x_ldo_voltage_range_sel,
+ .enable_reg = ATC2609A_PMU_LDO8_CTL0,
+ .enable_mask = BIT(0),
+ .enable_time = 2000,
+ .owner = THIS_MODULE,
+ }, {
+ .name = "LDO_REG9",
+ .supply_name = "vcc14",
+ .of_match = of_match_ptr("LDO_REG9"),
+ .regulators_node = of_match_ptr("regulators"),
+ .id = ATC2609A_ID_LDO9,
+ .ops = &atc260x_reg_fixed_ops,
+ .type = REGULATOR_VOLTAGE,
+ .min_uV = 2600000,
+ .uV_step = 100000,
+ .n_voltages = 8,
+ .vsel_reg = ATC2609A_PMU_LDO9_CTL,
+ .vsel_mask = ATC2609A_LDO_VSEL_MASK2,
+ .enable_time = 2000,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int atc260x_regulator_probe(struct platform_device *pdev)
+{
+ struct atc260x *atc260x = dev_get_drvdata(pdev->dev.parent);
+ struct device *dev = atc260x->dev;
+ struct regulator_config config = {};
+ struct regulator_dev *atc260x_rdev;
+ const struct regulator_desc *regulators;
+ int i, nregulators;
+
+ switch (atc260x->type) {
+ case ATC2609A:
+ regulators = atc2609a_reg;
+ nregulators = ATC2609A_ID_MAX;
+ break;
+ default:
+ dev_err(dev, "unsupported ATC260X ID %d\n", atc260x->type);
+ return -EINVAL;
+ }
+
+ config.dev = dev;
+ config.regmap = atc260x->regmap;
+
+ /* Instantiate the regulators */
+ for (i = 0; i < nregulators; i++) {
+ atc260x_rdev = devm_regulator_register(&pdev->dev,
+ &regulators[i], &config);
+ if (IS_ERR(atc260x_rdev)) {
+ dev_err(dev, "failed to register regulator: %d\n", i);
+ return PTR_ERR(atc260x_rdev);
+ }
+ }
+
+ return 0;
+}
+
+static struct platform_driver atc260x_regulator_driver = {
+ .probe = atc260x_regulator_probe,
+ .driver = {
+ .name = "atc260x-regulator"
+ },
+};
+
+module_platform_driver(atc260x_regulator_driver);
+
+MODULE_DESCRIPTION("Regulator driver for ATC260x PMICs");
+MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>");
+MODULE_LICENSE("GPL");
--
2.17.1