diff options
Diffstat (limited to 'drivers/regulator/atc260x-regulator.c')
| -rw-r--r-- | drivers/regulator/atc260x-regulator.c | 541 |
1 files changed, 541 insertions, 0 deletions
diff --git a/drivers/regulator/atc260x-regulator.c b/drivers/regulator/atc260x-regulator.c new file mode 100644 index 000000000..485e58b26 --- /dev/null +++ b/drivers/regulator/atc260x-regulator.c @@ -0,0 +1,541 @@ +// SPDX-License-Identifier: GPL-2.0+ +// +// Regulator driver for ATC260x PMICs +// +// Copyright (C) 2019 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> +// Copyright (C) 2020 Cristian Ciocaltea <cristian.ciocaltea@gmail.com> + +#include <linux/mfd/atc260x/core.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/regmap.h> +#include <linux/regulator/driver.h> + +struct atc260x_regulator_data { + int voltage_time_dcdc; + int voltage_time_ldo; +}; + +static const struct linear_range atc2603c_dcdc_voltage_ranges[] = { + REGULATOR_LINEAR_RANGE(1300000, 0, 13, 50000), + REGULATOR_LINEAR_RANGE(1950000, 14, 15, 100000), +}; + +static const struct linear_range atc2609a_dcdc_voltage_ranges[] = { + REGULATOR_LINEAR_RANGE(600000, 0, 127, 6250), + REGULATOR_LINEAR_RANGE(1400000, 128, 232, 25000), +}; + +static const struct linear_range atc2609a_ldo_voltage_ranges0[] = { + REGULATOR_LINEAR_RANGE(700000, 0, 15, 100000), + REGULATOR_LINEAR_RANGE(2100000, 0, 12, 100000), +}; + +static const struct linear_range atc2609a_ldo_voltage_ranges1[] = { + REGULATOR_LINEAR_RANGE(850000, 0, 15, 100000), + REGULATOR_LINEAR_RANGE(2100000, 0, 11, 100000), +}; + +static const unsigned int atc260x_ldo_voltage_range_sel[] = { + 0x0, 0x20, +}; + +static int atc260x_dcdc_set_voltage_time_sel(struct regulator_dev *rdev, + unsigned int old_selector, + unsigned int new_selector) +{ + struct atc260x_regulator_data *data = rdev_get_drvdata(rdev); + + if (new_selector > old_selector) + return data->voltage_time_dcdc; + + return 0; +} + +static int atc260x_ldo_set_voltage_time_sel(struct regulator_dev *rdev, + unsigned int old_selector, + unsigned int new_selector) +{ + struct atc260x_regulator_data *data = rdev_get_drvdata(rdev); + + if (new_selector > old_selector) + return data->voltage_time_ldo; + + return 0; +} + +static const struct regulator_ops atc260x_dcdc_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, + .set_voltage_time_sel = atc260x_dcdc_set_voltage_time_sel, +}; + +static const struct regulator_ops atc260x_ldo_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, + .set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel, +}; + +static const struct regulator_ops atc260x_ldo_bypass_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, + .set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel, + .set_bypass = regulator_set_bypass_regmap, + .get_bypass = regulator_get_bypass_regmap, +}; + +static const struct regulator_ops atc260x_ldo_bypass_discharge_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, + .set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel, + .set_bypass = regulator_set_bypass_regmap, + .get_bypass = regulator_get_bypass_regmap, + .set_active_discharge = regulator_set_active_discharge_regmap, +}; + +static const struct regulator_ops atc260x_dcdc_range_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, + .set_voltage_time_sel = atc260x_dcdc_set_voltage_time_sel, +}; + +static const struct regulator_ops atc260x_ldo_range_pick_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, + .set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel, +}; + +static const struct regulator_ops atc260x_dcdc_fixed_ops = { + .list_voltage = regulator_list_voltage_linear, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_time_sel = atc260x_dcdc_set_voltage_time_sel, +}; + +static const struct regulator_ops atc260x_ldo_fixed_ops = { + .list_voltage = regulator_list_voltage_linear, + .set_voltage_sel = regulator_set_voltage_sel_regmap, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_time_sel = atc260x_ldo_set_voltage_time_sel, +}; + +static const struct regulator_ops atc260x_no_ops = { +}; + +/* + * Note LDO8 is not documented in datasheet (v2.4), but supported + * in the vendor's driver implementation (xapp-le-kernel). + */ +enum atc2603c_reg_ids { + ATC2603C_ID_DCDC1, + ATC2603C_ID_DCDC2, + ATC2603C_ID_DCDC3, + ATC2603C_ID_LDO1, + ATC2603C_ID_LDO2, + ATC2603C_ID_LDO3, + ATC2603C_ID_LDO5, + ATC2603C_ID_LDO6, + ATC2603C_ID_LDO7, + ATC2603C_ID_LDO8, + ATC2603C_ID_LDO11, + ATC2603C_ID_LDO12, + ATC2603C_ID_SWITCHLDO1, + ATC2603C_ID_MAX, +}; + +#define atc2603c_reg_desc_dcdc(num, min, step, n_volt, vsel_h, vsel_l) { \ + .name = "DCDC"#num, \ + .supply_name = "dcdc"#num, \ + .of_match = of_match_ptr("dcdc"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2603C_ID_DCDC##num, \ + .ops = &atc260x_dcdc_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = min, \ + .uV_step = step, \ + .n_voltages = n_volt, \ + .vsel_reg = ATC2603C_PMU_DC##num##_CTL0, \ + .vsel_mask = GENMASK(vsel_h, vsel_l), \ + .enable_reg = ATC2603C_PMU_DC##num##_CTL0, \ + .enable_mask = BIT(15), \ + .enable_time = 800, \ + .owner = THIS_MODULE, \ +} + +#define atc2603c_reg_desc_dcdc_range(num, vsel_h, vsel_l) { \ + .name = "DCDC"#num, \ + .supply_name = "dcdc"#num, \ + .of_match = of_match_ptr("dcdc"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2603C_ID_DCDC##num, \ + .ops = &atc260x_dcdc_range_ops, \ + .type = REGULATOR_VOLTAGE, \ + .n_voltages = 16, \ + .linear_ranges = atc2603c_dcdc_voltage_ranges, \ + .n_linear_ranges = ARRAY_SIZE(atc2603c_dcdc_voltage_ranges), \ + .vsel_reg = ATC2603C_PMU_DC##num##_CTL0, \ + .vsel_mask = GENMASK(vsel_h, vsel_l), \ + .enable_reg = ATC2603C_PMU_DC##num##_CTL0, \ + .enable_mask = BIT(15), \ + .enable_time = 800, \ + .owner = THIS_MODULE, \ +} + +#define atc2603c_reg_desc_dcdc_fixed(num, min, step, n_volt, vsel_h, vsel_l) { \ + .name = "DCDC"#num, \ + .supply_name = "dcdc"#num, \ + .of_match = of_match_ptr("dcdc"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2603C_ID_DCDC##num, \ + .ops = &atc260x_dcdc_fixed_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = min, \ + .uV_step = step, \ + .n_voltages = n_volt, \ + .vsel_reg = ATC2603C_PMU_DC##num##_CTL0, \ + .vsel_mask = GENMASK(vsel_h, vsel_l), \ + .enable_time = 800, \ + .owner = THIS_MODULE, \ +} + +#define atc2603c_reg_desc_ldo(num, min, step, n_volt, vsel_h, vsel_l) { \ + .name = "LDO"#num, \ + .supply_name = "ldo"#num, \ + .of_match = of_match_ptr("ldo"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2603C_ID_LDO##num, \ + .ops = &atc260x_ldo_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = min, \ + .uV_step = step, \ + .n_voltages = n_volt, \ + .vsel_reg = ATC2603C_PMU_LDO##num##_CTL, \ + .vsel_mask = GENMASK(vsel_h, vsel_l), \ + .enable_reg = ATC2603C_PMU_LDO##num##_CTL, \ + .enable_mask = BIT(0), \ + .enable_time = 2000, \ + .owner = THIS_MODULE, \ +} + +#define atc2603c_reg_desc_ldo_fixed(num, min, step, n_volt, vsel_h, vsel_l) { \ + .name = "LDO"#num, \ + .supply_name = "ldo"#num, \ + .of_match = of_match_ptr("ldo"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2603C_ID_LDO##num, \ + .ops = &atc260x_ldo_fixed_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = min, \ + .uV_step = step, \ + .n_voltages = n_volt, \ + .vsel_reg = ATC2603C_PMU_LDO##num##_CTL, \ + .vsel_mask = GENMASK(vsel_h, vsel_l), \ + .enable_time = 2000, \ + .owner = THIS_MODULE, \ +} + +#define atc2603c_reg_desc_ldo_noops(num, vfixed) { \ + .name = "LDO"#num, \ + .supply_name = "ldo"#num, \ + .of_match = of_match_ptr("ldo"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2603C_ID_LDO##num, \ + .ops = &atc260x_no_ops, \ + .type = REGULATOR_VOLTAGE, \ + .fixed_uV = vfixed, \ + .n_voltages = 1, \ + .owner = THIS_MODULE, \ +} + +#define atc2603c_reg_desc_ldo_switch(num, min, step, n_volt, vsel_h, vsel_l) { \ + .name = "SWITCHLDO"#num, \ + .supply_name = "switchldo"#num, \ + .of_match = of_match_ptr("switchldo"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2603C_ID_SWITCHLDO##num, \ + .ops = &atc260x_ldo_bypass_discharge_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = min, \ + .uV_step = step, \ + .n_voltages = n_volt, \ + .vsel_reg = ATC2603C_PMU_SWITCH_CTL, \ + .vsel_mask = GENMASK(vsel_h, vsel_l), \ + .enable_reg = ATC2603C_PMU_SWITCH_CTL, \ + .enable_mask = BIT(15), \ + .enable_is_inverted = true, \ + .enable_time = 2000, \ + .bypass_reg = ATC2603C_PMU_SWITCH_CTL, \ + .bypass_mask = BIT(5), \ + .active_discharge_reg = ATC2603C_PMU_SWITCH_CTL, \ + .active_discharge_mask = BIT(1), \ + .active_discharge_on = BIT(1), \ + .owner = THIS_MODULE, \ +} + +static const struct regulator_desc atc2603c_reg[] = { + atc2603c_reg_desc_dcdc_fixed(1, 700000, 25000, 29, 11, 7), + atc2603c_reg_desc_dcdc_range(2, 12, 8), + atc2603c_reg_desc_dcdc_fixed(3, 2600000, 100000, 8, 11, 9), + atc2603c_reg_desc_ldo_fixed(1, 2600000, 100000, 8, 15, 13), + atc2603c_reg_desc_ldo_fixed(2, 2600000, 100000, 8, 15, 13), + atc2603c_reg_desc_ldo_fixed(3, 1500000, 100000, 6, 15, 13), + atc2603c_reg_desc_ldo(5, 2600000, 100000, 8, 15, 13), + atc2603c_reg_desc_ldo_fixed(6, 700000, 25000, 29, 15, 11), + atc2603c_reg_desc_ldo(7, 1500000, 100000, 6, 15, 13), + atc2603c_reg_desc_ldo(8, 2300000, 100000, 11, 15, 12), + atc2603c_reg_desc_ldo_fixed(11, 2600000, 100000, 8, 15, 13), + atc2603c_reg_desc_ldo_noops(12, 1800000), + atc2603c_reg_desc_ldo_switch(1, 3000000, 100000, 4, 4, 3), +}; + +static const struct regulator_desc atc2603c_reg_dcdc2_ver_b = + atc2603c_reg_desc_dcdc(2, 1000000, 50000, 18, 12, 8); + +enum atc2609a_reg_ids { + ATC2609A_ID_DCDC0, + ATC2609A_ID_DCDC1, + ATC2609A_ID_DCDC2, + ATC2609A_ID_DCDC3, + ATC2609A_ID_DCDC4, + ATC2609A_ID_LDO0, + ATC2609A_ID_LDO1, + ATC2609A_ID_LDO2, + ATC2609A_ID_LDO3, + ATC2609A_ID_LDO4, + ATC2609A_ID_LDO5, + ATC2609A_ID_LDO6, + ATC2609A_ID_LDO7, + ATC2609A_ID_LDO8, + ATC2609A_ID_LDO9, + ATC2609A_ID_MAX, +}; + +#define atc2609a_reg_desc_dcdc(num, en_bit) { \ + .name = "DCDC"#num, \ + .supply_name = "dcdc"#num, \ + .of_match = of_match_ptr("dcdc"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2609A_ID_DCDC##num, \ + .ops = &atc260x_dcdc_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = 600000, \ + .uV_step = 6250, \ + .n_voltages = 256, \ + .vsel_reg = ATC2609A_PMU_DC##num##_CTL0, \ + .vsel_mask = GENMASK(15, 8), \ + .enable_reg = ATC2609A_PMU_DC_OSC, \ + .enable_mask = BIT(en_bit), \ + .enable_time = 800, \ + .owner = THIS_MODULE, \ +} + +#define atc2609a_reg_desc_dcdc_range(num, en_bit) { \ + .name = "DCDC"#num, \ + .supply_name = "dcdc"#num, \ + .of_match = of_match_ptr("dcdc"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2609A_ID_DCDC##num, \ + .ops = &atc260x_dcdc_range_ops, \ + .type = REGULATOR_VOLTAGE, \ + .n_voltages = 233, \ + .linear_ranges = atc2609a_dcdc_voltage_ranges, \ + .n_linear_ranges = ARRAY_SIZE(atc2609a_dcdc_voltage_ranges), \ + .vsel_reg = ATC2609A_PMU_DC##num##_CTL0, \ + .vsel_mask = GENMASK(15, 8), \ + .enable_reg = ATC2609A_PMU_DC_OSC, \ + .enable_mask = BIT(en_bit), \ + .enable_time = 800, \ + .owner = THIS_MODULE, \ +} + +#define atc2609a_reg_desc_ldo(num) { \ + .name = "LDO"#num, \ + .supply_name = "ldo"#num, \ + .of_match = of_match_ptr("ldo"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2609A_ID_LDO##num, \ + .ops = &atc260x_ldo_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = 700000, \ + .uV_step = 100000, \ + .n_voltages = 16, \ + .vsel_reg = ATC2609A_PMU_LDO##num##_CTL0, \ + .vsel_mask = GENMASK(4, 1), \ + .enable_reg = ATC2609A_PMU_LDO##num##_CTL0, \ + .enable_mask = BIT(0), \ + .enable_time = 2000, \ + .owner = THIS_MODULE, \ +} + +#define atc2609a_reg_desc_ldo_bypass(num) { \ + .name = "LDO"#num, \ + .supply_name = "ldo"#num, \ + .of_match = of_match_ptr("ldo"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2609A_ID_LDO##num, \ + .ops = &atc260x_ldo_bypass_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = 2300000, \ + .uV_step = 100000, \ + .n_voltages = 12, \ + .vsel_reg = ATC2609A_PMU_LDO##num##_CTL0, \ + .vsel_mask = GENMASK(5, 2), \ + .enable_reg = ATC2609A_PMU_LDO##num##_CTL0, \ + .enable_mask = BIT(0), \ + .enable_time = 2000, \ + .bypass_reg = ATC2609A_PMU_LDO##num##_CTL0, \ + .bypass_mask = BIT(1), \ + .owner = THIS_MODULE, \ +} + +#define atc2609a_reg_desc_ldo_range_pick(num, n_range, n_volt) { \ + .name = "LDO"#num, \ + .supply_name = "ldo"#num, \ + .of_match = of_match_ptr("ldo"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2609A_ID_LDO##num, \ + .ops = &atc260x_ldo_range_pick_ops, \ + .type = REGULATOR_VOLTAGE, \ + .linear_ranges = atc2609a_ldo_voltage_ranges##n_range, \ + .n_linear_ranges = ARRAY_SIZE(atc2609a_ldo_voltage_ranges##n_range), \ + .n_voltages = n_volt, \ + .vsel_reg = ATC2609A_PMU_LDO##num##_CTL0, \ + .vsel_mask = GENMASK(4, 1), \ + .vsel_range_reg = ATC2609A_PMU_LDO##num##_CTL0, \ + .vsel_range_mask = BIT(5), \ + .linear_range_selectors = atc260x_ldo_voltage_range_sel, \ + .enable_reg = ATC2609A_PMU_LDO##num##_CTL0, \ + .enable_mask = BIT(0), \ + .enable_time = 2000, \ + .owner = THIS_MODULE, \ +} + +#define atc2609a_reg_desc_ldo_fixed(num) { \ + .name = "LDO"#num, \ + .supply_name = "ldo"#num, \ + .of_match = of_match_ptr("ldo"#num), \ + .regulators_node = of_match_ptr("regulators"), \ + .id = ATC2609A_ID_LDO##num, \ + .ops = &atc260x_ldo_fixed_ops, \ + .type = REGULATOR_VOLTAGE, \ + .min_uV = 2600000, \ + .uV_step = 100000, \ + .n_voltages = 8, \ + .vsel_reg = ATC2609A_PMU_LDO##num##_CTL, \ + .vsel_mask = GENMASK(15, 13), \ + .enable_time = 2000, \ + .owner = THIS_MODULE, \ +} + +static const struct regulator_desc atc2609a_reg[] = { + atc2609a_reg_desc_dcdc(0, 4), + atc2609a_reg_desc_dcdc(1, 5), + atc2609a_reg_desc_dcdc(2, 6), + atc2609a_reg_desc_dcdc_range(3, 7), + atc2609a_reg_desc_dcdc(4, 8), + atc2609a_reg_desc_ldo_bypass(0), + atc2609a_reg_desc_ldo_bypass(1), + atc2609a_reg_desc_ldo_bypass(2), + atc2609a_reg_desc_ldo_range_pick(3, 0, 29), + atc2609a_reg_desc_ldo_range_pick(4, 0, 29), + atc2609a_reg_desc_ldo(5), + atc2609a_reg_desc_ldo_range_pick(6, 1, 28), + atc2609a_reg_desc_ldo_range_pick(7, 0, 29), + atc2609a_reg_desc_ldo_range_pick(8, 0, 29), + atc2609a_reg_desc_ldo_fixed(9), +}; + +static int atc260x_regulator_probe(struct platform_device *pdev) +{ + struct atc260x *atc260x = dev_get_drvdata(pdev->dev.parent); + struct device *dev = atc260x->dev; + struct atc260x_regulator_data *atc260x_data; + struct regulator_config config = {}; + struct regulator_dev *atc260x_rdev; + const struct regulator_desc *regulators; + bool atc2603c_ver_b = false; + int i, nregulators; + + atc260x_data = devm_kzalloc(&pdev->dev, sizeof(*atc260x_data), GFP_KERNEL); + if (!atc260x_data) + return -ENOMEM; + + atc260x_data->voltage_time_dcdc = 350; + atc260x_data->voltage_time_ldo = 800; + + switch (atc260x->ic_type) { + case ATC2603C: + regulators = atc2603c_reg; + nregulators = ATC2603C_ID_MAX; + atc2603c_ver_b = atc260x->ic_ver == ATC260X_B; + break; + case ATC2609A: + atc260x_data->voltage_time_dcdc = 250; + regulators = atc2609a_reg; + nregulators = ATC2609A_ID_MAX; + break; + default: + dev_err(dev, "unsupported ATC260X ID %d\n", atc260x->ic_type); + return -EINVAL; + } + + config.dev = dev; + config.regmap = atc260x->regmap; + config.driver_data = atc260x_data; + + /* Instantiate the regulators */ + for (i = 0; i < nregulators; i++) { + if (atc2603c_ver_b && regulators[i].id == ATC2603C_ID_DCDC2) + atc260x_rdev = devm_regulator_register(&pdev->dev, + &atc2603c_reg_dcdc2_ver_b, + &config); + else + atc260x_rdev = devm_regulator_register(&pdev->dev, + ®ulators[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@linaro.org>"); +MODULE_AUTHOR("Cristian Ciocaltea <cristian.ciocaltea@gmail.com>"); +MODULE_LICENSE("GPL"); |