From: Karel Balej Date: Wed, 27 Dec 2023 19:50:46 +0000 (+0100) Subject: regulator: add 88pm88x regulators driver X-Git-Tag: v6.7-pxa1908~20 X-Git-Url: https://git.dujemihanovic.xyz/?a=commitdiff_plain;h=12b66a0877f9aa331a958f4b66af72dc30631cc9;p=linux.git regulator: add 88pm88x regulators driver Support the LDO and buck regulators of the Marvell 88PM886 PMIC. Support for 88PM880 is not included but should be easy to implement being just a matter of defining the additional LDOs and all bucks and modifying the 88PM88X MFD driver appropriately. Signed-off-by: Karel Balej --- diff --git a/drivers/mfd/88pm88x.c b/drivers/mfd/88pm88x.c index 69a8e39d43b3..999d0539b720 100644 --- a/drivers/mfd/88pm88x.c +++ b/drivers/mfd/88pm88x.c @@ -68,6 +68,21 @@ static struct mfd_cell pm886_devs[] = { .num_resources = ARRAY_SIZE(pm88x_onkey_resources), .resources = pm88x_onkey_resources, }, + { + .name = "88pm88x-regulator", + .id = PM88X_REGULATOR_ID_LDO2, + .of_compatible = "marvell,88pm88x-regulator", + }, + { + .name = "88pm88x-regulator", + .id = PM88X_REGULATOR_ID_LDO15, + .of_compatible = "marvell,88pm88x-regulator", + }, + { + .name = "88pm88x-regulator", + .id = PM886_REGULATOR_ID_BUCK2, + .of_compatible = "marvell,88pm88x-regulator", + }, }; static struct pm88x_data pm886_a1_data = { diff --git a/drivers/regulator/88pm88x-regulator.c b/drivers/regulator/88pm88x-regulator.c new file mode 100644 index 000000000000..8b55e1365387 --- /dev/null +++ b/drivers/regulator/88pm88x-regulator.c @@ -0,0 +1,214 @@ +// SPDX-License-Identifier: GPL-2.0-only +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#define PM88X_REG_LDO_EN1 0x09 +#define PM88X_REG_LDO_EN2 0x0a + +#define PM88X_REG_BUCK_EN 0x08 + +#define PM88X_REG_LDO1_VOUT 0x20 +#define PM88X_REG_LDO2_VOUT 0x26 +#define PM88X_REG_LDO3_VOUT 0x2c +#define PM88X_REG_LDO4_VOUT 0x32 +#define PM88X_REG_LDO5_VOUT 0x38 +#define PM88X_REG_LDO6_VOUT 0x3e +#define PM88X_REG_LDO7_VOUT 0x44 +#define PM88X_REG_LDO8_VOUT 0x4a +#define PM88X_REG_LDO9_VOUT 0x50 +#define PM88X_REG_LDO10_VOUT 0x56 +#define PM88X_REG_LDO11_VOUT 0x5c +#define PM88X_REG_LDO12_VOUT 0x62 +#define PM88X_REG_LDO13_VOUT 0x68 +#define PM88X_REG_LDO14_VOUT 0x6e +#define PM88X_REG_LDO15_VOUT 0x74 +#define PM88X_REG_LDO16_VOUT 0x7a + +#define PM886_REG_BUCK1_VOUT 0xa5 +#define PM886_REG_BUCK2_VOUT 0xb3 +#define PM886_REG_BUCK3_VOUT 0xc1 +#define PM886_REG_BUCK4_VOUT 0xcf +#define PM886_REG_BUCK5_VOUT 0xdd + +#define PM88X_LDO_VSEL_MASK 0x0f +#define PM88X_BUCK_VSEL_MASK 0x7f + +struct pm88x_regulator { + struct regulator_desc desc; + int max_uA; +}; + +static int pm88x_regulator_get_ilim(struct regulator_dev *rdev) +{ + struct pm88x_regulator *data = rdev_get_drvdata(rdev); + + if (!data) { + dev_err(&rdev->dev, "Failed to get regulator data\n"); + return -EINVAL; + } + return data->max_uA; +} + +static const struct regulator_ops pm88x_ldo_ops = { + .list_voltage = regulator_list_voltage_table, + .map_voltage = regulator_map_voltage_iterate, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .get_current_limit = pm88x_regulator_get_ilim, +}; + +static const struct regulator_ops pm88x_buck_ops = { + .list_voltage = regulator_list_voltage_linear_range, + .map_voltage = regulator_map_voltage_linear_range, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .enable = regulator_enable_regmap, + .disable = regulator_disable_regmap, + .is_enabled = regulator_is_enabled_regmap, + .get_current_limit = pm88x_regulator_get_ilim, +}; + +static const unsigned int pm88x_ldo_volt_table1[] = { + 1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000, +}; + +static const unsigned int pm88x_ldo_volt_table2[] = { + 1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000, + 2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000, +}; + +static const unsigned int pm88x_ldo_volt_table3[] = { + 1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000, +}; + +static const struct linear_range pm88x_buck_volt_ranges1[] = { + REGULATOR_LINEAR_RANGE(600000, 0, 79, 12500), + REGULATOR_LINEAR_RANGE(1600000, 80, 84, 50000), +}; + +static const struct linear_range pm88x_buck_volt_ranges2[] = { + REGULATOR_LINEAR_RANGE(600000, 0, 79, 12500), + REGULATOR_LINEAR_RANGE(1600000, 80, 114, 50000), +}; + +static struct pm88x_regulator pm88x_ldo2 = { + .desc = { + .name = "LDO2", + .id = PM88X_REGULATOR_ID_LDO2, + .regulators_node = "regulators", + .of_match = "ldo2", + .ops = &pm88x_ldo_ops, + .type = REGULATOR_VOLTAGE, + .enable_reg = PM88X_REG_LDO_EN1, + .enable_mask = BIT(1), + .volt_table = pm88x_ldo_volt_table1, + .n_voltages = ARRAY_SIZE(pm88x_ldo_volt_table1), + .vsel_reg = PM88X_REG_LDO2_VOUT, + .vsel_mask = PM88X_LDO_VSEL_MASK, + }, + .max_uA = 100000, +}; + +static struct pm88x_regulator pm88x_ldo15 = { + .desc = { + .name = "LDO15", + .id = PM88X_REGULATOR_ID_LDO15, + .regulators_node = "regulators", + .of_match = "ldo15", + .ops = &pm88x_ldo_ops, + .type = REGULATOR_VOLTAGE, + .enable_reg = PM88X_REG_LDO_EN2, + .enable_mask = BIT(6), + .volt_table = pm88x_ldo_volt_table2, + .n_voltages = ARRAY_SIZE(pm88x_ldo_volt_table2), + .vsel_reg = PM88X_REG_LDO15_VOUT, + .vsel_mask = PM88X_LDO_VSEL_MASK, + }, + .max_uA = 200000, +}; + +static struct pm88x_regulator pm886_buck2 = { + .desc = { + .name = "buck2", + .id = PM886_REGULATOR_ID_BUCK2, + .regulators_node = "regulators", + .of_match = "buck2", + .ops = &pm88x_buck_ops, + .type = REGULATOR_VOLTAGE, + .n_voltages = 115, + .linear_ranges = pm88x_buck_volt_ranges2, + .n_linear_ranges = ARRAY_SIZE(pm88x_buck_volt_ranges2), + .vsel_reg = PM886_REG_BUCK2_VOUT, + .vsel_mask = PM88X_BUCK_VSEL_MASK, + .enable_reg = PM88X_REG_BUCK_EN, + .enable_mask = BIT(1), + }, + .max_uA = 1200000, +}; + +static struct pm88x_regulator *pm88x_regulators[] = { + [PM88X_REGULATOR_ID_LDO2] = &pm88x_ldo2, + [PM88X_REGULATOR_ID_LDO15] = &pm88x_ldo15, + [PM886_REGULATOR_ID_BUCK2] = &pm886_buck2, +}; + +static int pm88x_regulator_probe(struct platform_device *pdev) +{ + struct pm88x_chip *chip = dev_get_drvdata(pdev->dev.parent); + struct regulator_config rcfg = { }; + struct pm88x_regulator *regulator; + struct regulator_desc *rdesc; + struct regulator_dev *rdev; + int ret; + + if (pdev->id < 0 || pdev->id == PM88X_REGULATOR_ID_BUCKS + || pdev->id >= PM88X_REGULATOR_ID_SENTINEL) { + dev_err(&pdev->dev, "Invalid regulator ID: %d\n", pdev->id); + return -EINVAL; + } + + rcfg.dev = pdev->dev.parent; + regulator = pm88x_regulators[pdev->id]; + rdesc = ®ulator->desc; + rcfg.driver_data = regulator; + rcfg.regmap = chip->regmaps[rdesc->id > PM88X_REGULATOR_ID_BUCKS ? + PM88X_REGMAP_BUCK : PM88X_REGMAP_LDO]; + rdev = devm_regulator_register(&pdev->dev, rdesc, &rcfg); + if (IS_ERR(rdev)) { + ret = PTR_ERR(rdev); + dev_err(&pdev->dev, "Failed to register %s: %d", + rdesc->name, ret); + return ret; + } + + return 0; +} + +const struct of_device_id pm88x_regulator_of_match[] = { + { .compatible = "marvell,88pm88x-regulator", }, + { }, +}; + +static struct platform_driver pm88x_regulator_driver = { + .driver = { + .name = "88pm88x-regulator", + .of_match_table = of_match_ptr(pm88x_regulator_of_match), + }, + .probe = pm88x_regulator_probe, +}; +module_platform_driver(pm88x_regulator_driver); + +MODULE_DESCRIPTION("Marvell 88PM88X PMIC regulator driver"); +MODULE_AUTHOR("Karel Balej "); +MODULE_LICENSE("GPL"); diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index f3ec24691378..e3fffae60b4c 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -81,6 +81,12 @@ config REGULATOR_88PM8607 help This driver supports 88PM8607 voltage regulator chips. +config REGULATOR_88PM88X + tristate "Marvell 88PM88X voltage regulators" + depends on MFD_88PM88X + help + This driver implements support for Marvell 88PM88X voltage regulators. + config REGULATOR_ACT8865 tristate "Active-semi act8865 voltage regulator" depends on I2C diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index b2b059b5ee56..9c8a85b21699 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -13,6 +13,7 @@ obj-$(CONFIG_REGULATOR_USERSPACE_CONSUMER) += userspace-consumer.o obj-$(CONFIG_REGULATOR_88PG86X) += 88pg86x.o obj-$(CONFIG_REGULATOR_88PM800) += 88pm800-regulator.o obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o +obj-$(CONFIG_REGULATOR_88PM88X) += 88pm88x-regulator.o obj-$(CONFIG_REGULATOR_CROS_EC) += cros-ec-regulator.o obj-$(CONFIG_REGULATOR_CPCAP) += cpcap-regulator.o obj-$(CONFIG_REGULATOR_AAT2870) += aat2870-regulator.o diff --git a/include/linux/mfd/88pm88x.h b/include/linux/mfd/88pm88x.h index 703e6104c1d8..edb871cc1d47 100644 --- a/include/linux/mfd/88pm88x.h +++ b/include/linux/mfd/88pm88x.h @@ -41,6 +41,17 @@ #define PM88X_PAGE_OFFSET_LDO 1 +enum pm88x_regulator_id { + PM88X_REGULATOR_ID_LDO2, + PM88X_REGULATOR_ID_LDO15, + + PM88X_REGULATOR_ID_BUCKS, + + PM886_REGULATOR_ID_BUCK2, + + PM88X_REGULATOR_ID_SENTINEL +}; + enum pm88x_regmap_index { PM88X_REGMAP_BASE, PM88X_REGMAP_LDO,