| /* |
| * Regulators driver for Marvell 88PM800 |
| * |
| * Copyright (C) 2012 Marvell International Ltd. |
| * Joseph(Yossi) Hanin <yhanin@marvell.com> |
| * Yi Zhang <yizhang@marvell.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/init.h> |
| #include <linux/err.h> |
| #include <linux/regmap.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/mfd/88pm80x.h> |
| #include <linux/delay.h> |
| #include <linux/io.h> |
| #include <linux/of.h> |
| #include <linux/regulator/of_regulator.h> |
| |
| /* LDO1 with DVC[0..3] */ |
| #define PM800_LDO1_VOUT (0x08) /* VOUT1 */ |
| #define PM800_LDO1_VOUT_2 (0x09) |
| #define PM800_LDO1_VOUT_3 (0x0A) |
| #define PM800_LDO2_VOUT (0x0B) |
| #define PM800_LDO3_VOUT (0x0C) |
| #define PM800_LDO4_VOUT (0x0D) |
| #define PM800_LDO5_VOUT (0x0E) |
| #define PM800_LDO6_VOUT (0x0F) |
| #define PM800_LDO7_VOUT (0x10) |
| #define PM800_LDO8_VOUT (0x11) |
| #define PM800_LDO9_VOUT (0x12) |
| #define PM800_LDO10_VOUT (0x13) |
| #define PM800_LDO11_VOUT (0x14) |
| #define PM800_LDO12_VOUT (0x15) |
| #define PM800_LDO13_VOUT (0x16) |
| #define PM800_LDO14_VOUT (0x17) |
| #define PM800_LDO15_VOUT (0x18) |
| #define PM800_LDO16_VOUT (0x19) |
| #define PM800_LDO17_VOUT (0x1A) |
| #define PM800_LDO18_VOUT (0x1B) |
| #define PM800_LDO19_VOUT (0x1C) |
| |
| /* BUCK1 with DVC[0..3] */ |
| #define PM800_BUCK1 (0x3C) |
| #define PM800_BUCK1_1 (0x3D) |
| #define PM800_BUCK1_2 (0x3E) |
| #define PM800_BUCK1_3 (0x3F) |
| #define PM800_BUCK2 (0x40) |
| #define PM800_BUCK3 (0x41) |
| #define PM800_BUCK3 (0x41) |
| #define PM800_BUCK4 (0x42) |
| #define PM800_BUCK4_1 (0x43) |
| #define PM800_BUCK4_2 (0x44) |
| #define PM800_BUCK4_3 (0x45) |
| #define PM800_BUCK5 (0x46) |
| |
| #define PM800_BUCK_ENA (0x50) |
| #define PM800_LDO_ENA1_1 (0x51) |
| #define PM800_LDO_ENA1_2 (0x52) |
| #define PM800_LDO_ENA1_3 (0x53) |
| |
| #define PM800_LDO_ENA2_1 (0x56) |
| #define PM800_LDO_ENA2_2 (0x57) |
| #define PM800_LDO_ENA2_3 (0x58) |
| |
| #define PM800_BUCK1_MISC1 (0x78) |
| #define PM800_BUCK3_MISC1 (0x7E) |
| #define PM800_BUCK4_MISC1 (0x81) |
| #define PM800_BUCK5_MISC1 (0x84) |
| |
| struct pm800_regulator_info { |
| struct regulator_desc desc; |
| int max_ua; |
| }; |
| |
| struct pm800_regulators { |
| struct regulator_dev *regulators[PM800_ID_RG_MAX]; |
| struct pm80x_chip *chip; |
| struct regmap *map; |
| }; |
| |
| /* |
| * vreg - the buck regs string. |
| * ereg - the string for the enable register. |
| * ebit - the bit number in the enable register. |
| * amax - the current |
| * Buck has 2 kinds of voltage steps. It is easy to find voltage by ranges, |
| * not the constant voltage table. |
| */ |
| #define PM800_BUCK(vreg, ereg, ebit, amax, volt_ranges) \ |
| { \ |
| .desc = { \ |
| .name = #vreg, \ |
| .ops = &pm800_volt_range_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .id = PM800_ID_##vreg, \ |
| .owner = THIS_MODULE, \ |
| .linear_ranges = volt_ranges, \ |
| .n_linear_ranges = ARRAY_SIZE(volt_ranges), \ |
| .vsel_reg = PM800_##vreg, \ |
| .vsel_mask = 0x7f, \ |
| .enable_reg = PM800_##ereg, \ |
| .enable_mask = 1 << (ebit), \ |
| }, \ |
| .max_ua = (amax), \ |
| } |
| |
| /* |
| * vreg - the LDO regs string |
| * ereg - the string for the enable register. |
| * ebit - the bit number in the enable register. |
| * amax - the current |
| * volt_table - the LDO voltage table |
| * For all the LDOes, there are too many ranges. Using volt_table will be |
| * simpler and faster. |
| */ |
| #define PM800_LDO(vreg, ereg, ebit, amax, ldo_volt_table) \ |
| { \ |
| .desc = { \ |
| .name = #vreg, \ |
| .ops = &pm800_volt_table_ops, \ |
| .type = REGULATOR_VOLTAGE, \ |
| .id = PM800_ID_##vreg, \ |
| .owner = THIS_MODULE, \ |
| .n_voltages = ARRAY_SIZE(ldo_volt_table), \ |
| .vsel_reg = PM800_##vreg##_VOUT, \ |
| .vsel_mask = 0x1f, \ |
| .enable_reg = PM800_##ereg, \ |
| .enable_mask = 1 << (ebit), \ |
| .volt_table = ldo_volt_table, \ |
| }, \ |
| .max_ua = (amax), \ |
| } |
| |
| /* Ranges are sorted in ascending order. */ |
| static const struct regulator_linear_range buck1_volt_range[] = { |
| { .min_uV = 600000, .max_uV = 1587500, .min_sel = 0, .max_sel = 0x4f, |
| .uV_step = 12500 }, |
| { .min_uV = 1600000, .max_uV = 1800000, .min_sel = 0x50, |
| .max_sel = 0x54, .uV_step = 50000 }, |
| }; |
| |
| /* BUCK 2~5 have same ranges. */ |
| static const struct regulator_linear_range buck2_5_volt_range[] = { |
| { .min_uV = 600000, .max_uV = 1587500, .min_sel = 0, .max_sel = 0x4f, |
| .uV_step = 12500 }, |
| { .min_uV = 1600000, .max_uV = 3300000, .min_sel = 0x50, |
| .max_sel = 0x72, .uV_step = 50000 }, |
| }; |
| |
| static const unsigned int ldo1_volt_table[] = { |
| 600000, 650000, 700000, 750000, 800000, 850000, 900000, 950000, |
| 1000000, 1050000, 1100000, 1150000, 1200000, 1300000, 1400000, 1500000, |
| }; |
| |
| static const unsigned int ldo2_volt_table[] = { |
| 1700000, 1800000, 1900000, 2000000, 2100000, 2500000, 2700000, 2800000, |
| }; |
| |
| /* LDO 3~17 have same voltage table. */ |
| static const unsigned int ldo3_17_volt_table[] = { |
| 1200000, 1250000, 1700000, 1800000, 1850000, 1900000, 2500000, 2600000, |
| 2700000, 2750000, 2800000, 2850000, 2900000, 3000000, 3100000, 3300000, |
| }; |
| |
| /* LDO 18~19 have same voltage table. */ |
| static const unsigned int ldo18_19_volt_table[] = { |
| 1700000, 1800000, 1900000, 2500000, 2800000, 2900000, 3100000, 3300000, |
| }; |
| |
| static int pm800_get_current_limit(struct regulator_dev *rdev) |
| { |
| struct pm800_regulator_info *info = rdev_get_drvdata(rdev); |
| |
| return info->max_ua; |
| } |
| |
| static struct regulator_ops pm800_volt_range_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 = pm800_get_current_limit, |
| }; |
| |
| static struct regulator_ops pm800_volt_table_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 = pm800_get_current_limit, |
| }; |
| |
| /* The array is indexed by id(PM800_ID_XXX) */ |
| static struct pm800_regulator_info pm800_regulator_info[] = { |
| PM800_BUCK(BUCK1, BUCK_ENA, 0, 3000000, buck1_volt_range), |
| PM800_BUCK(BUCK2, BUCK_ENA, 1, 1200000, buck2_5_volt_range), |
| PM800_BUCK(BUCK3, BUCK_ENA, 2, 1200000, buck2_5_volt_range), |
| PM800_BUCK(BUCK4, BUCK_ENA, 3, 1200000, buck2_5_volt_range), |
| PM800_BUCK(BUCK5, BUCK_ENA, 4, 1200000, buck2_5_volt_range), |
| |
| PM800_LDO(LDO1, LDO_ENA1_1, 0, 200000, ldo1_volt_table), |
| PM800_LDO(LDO2, LDO_ENA1_1, 1, 10000, ldo2_volt_table), |
| PM800_LDO(LDO3, LDO_ENA1_1, 2, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO4, LDO_ENA1_1, 3, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO5, LDO_ENA1_1, 4, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO6, LDO_ENA1_1, 5, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO7, LDO_ENA1_1, 6, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO8, LDO_ENA1_1, 7, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO9, LDO_ENA1_2, 0, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO10, LDO_ENA1_2, 1, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO11, LDO_ENA1_2, 2, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO12, LDO_ENA1_2, 3, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO13, LDO_ENA1_2, 4, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO14, LDO_ENA1_2, 5, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO15, LDO_ENA1_2, 6, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO16, LDO_ENA1_2, 7, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO17, LDO_ENA1_3, 0, 300000, ldo3_17_volt_table), |
| PM800_LDO(LDO18, LDO_ENA1_3, 1, 200000, ldo18_19_volt_table), |
| PM800_LDO(LDO19, LDO_ENA1_3, 2, 200000, ldo18_19_volt_table), |
| }; |
| |
| #define PM800_REGULATOR_OF_MATCH(_name, _id) \ |
| [PM800_ID_##_id] = { \ |
| .name = #_name, \ |
| .driver_data = &pm800_regulator_info[PM800_ID_##_id], \ |
| } |
| |
| static struct of_regulator_match pm800_regulator_matches[] = { |
| PM800_REGULATOR_OF_MATCH(buck1, BUCK1), |
| PM800_REGULATOR_OF_MATCH(buck2, BUCK2), |
| PM800_REGULATOR_OF_MATCH(buck3, BUCK3), |
| PM800_REGULATOR_OF_MATCH(buck4, BUCK4), |
| PM800_REGULATOR_OF_MATCH(buck5, BUCK5), |
| PM800_REGULATOR_OF_MATCH(ldo1, LDO1), |
| PM800_REGULATOR_OF_MATCH(ldo2, LDO2), |
| PM800_REGULATOR_OF_MATCH(ldo3, LDO3), |
| PM800_REGULATOR_OF_MATCH(ldo4, LDO4), |
| PM800_REGULATOR_OF_MATCH(ldo5, LDO5), |
| PM800_REGULATOR_OF_MATCH(ldo6, LDO6), |
| PM800_REGULATOR_OF_MATCH(ldo7, LDO7), |
| PM800_REGULATOR_OF_MATCH(ldo8, LDO8), |
| PM800_REGULATOR_OF_MATCH(ldo9, LDO9), |
| PM800_REGULATOR_OF_MATCH(ldo10, LDO10), |
| PM800_REGULATOR_OF_MATCH(ldo11, LDO11), |
| PM800_REGULATOR_OF_MATCH(ldo12, LDO12), |
| PM800_REGULATOR_OF_MATCH(ldo13, LDO13), |
| PM800_REGULATOR_OF_MATCH(ldo14, LDO14), |
| PM800_REGULATOR_OF_MATCH(ldo15, LDO15), |
| PM800_REGULATOR_OF_MATCH(ldo16, LDO16), |
| PM800_REGULATOR_OF_MATCH(ldo17, LDO17), |
| PM800_REGULATOR_OF_MATCH(ldo18, LDO18), |
| PM800_REGULATOR_OF_MATCH(ldo19, LDO19), |
| }; |
| |
| static int pm800_regulator_dt_init(struct platform_device *pdev) |
| { |
| struct device_node *np = pdev->dev.of_node; |
| int ret; |
| |
| ret = of_regulator_match(&pdev->dev, np, |
| pm800_regulator_matches, |
| ARRAY_SIZE(pm800_regulator_matches)); |
| if (ret < 0) |
| return ret; |
| |
| return 0; |
| } |
| |
| static int pm800_regulator_probe(struct platform_device *pdev) |
| { |
| struct pm80x_chip *chip = dev_get_drvdata(pdev->dev.parent); |
| struct pm80x_platform_data *pdata = pdev->dev.parent->platform_data; |
| struct pm800_regulators *pm800_data; |
| struct pm800_regulator_info *info; |
| struct regulator_config config = { }; |
| struct regulator_init_data *init_data; |
| int i, ret; |
| |
| if (!pdata || pdata->num_regulators == 0) { |
| if (IS_ENABLED(CONFIG_OF)) { |
| ret = pm800_regulator_dt_init(pdev); |
| if (ret) |
| return ret; |
| } else { |
| return -ENODEV; |
| } |
| } else if (pdata->num_regulators) { |
| /* Check whether num_regulator is valid. */ |
| unsigned int count = 0; |
| for (i = 0; pdata->regulators[i]; i++) |
| count++; |
| if (count != pdata->num_regulators) |
| return -EINVAL; |
| } else { |
| return -EINVAL; |
| } |
| |
| pm800_data = devm_kzalloc(&pdev->dev, sizeof(*pm800_data), |
| GFP_KERNEL); |
| if (!pm800_data) { |
| dev_err(&pdev->dev, "Failed to allocate pm800_regualtors"); |
| return -ENOMEM; |
| } |
| |
| pm800_data->map = chip->subchip->regmap_power; |
| pm800_data->chip = chip; |
| |
| platform_set_drvdata(pdev, pm800_data); |
| |
| for (i = 0; i < PM800_ID_RG_MAX; i++) { |
| if (!pdata || pdata->num_regulators == 0) |
| init_data = pm800_regulator_matches[i].init_data; |
| else |
| init_data = pdata->regulators[i]; |
| if (!init_data) |
| continue; |
| info = pm800_regulator_matches[i].driver_data; |
| config.dev = &pdev->dev; |
| config.init_data = init_data; |
| config.driver_data = info; |
| config.regmap = pm800_data->map; |
| config.of_node = pm800_regulator_matches[i].of_node; |
| |
| pm800_data->regulators[i] = |
| regulator_register(&info->desc, &config); |
| if (IS_ERR(pm800_data->regulators[i])) { |
| ret = PTR_ERR(pm800_data->regulators[i]); |
| dev_err(&pdev->dev, "Failed to register %s\n", |
| info->desc.name); |
| |
| while (--i >= 0) |
| regulator_unregister(pm800_data->regulators[i]); |
| |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int pm800_regulator_remove(struct platform_device *pdev) |
| { |
| struct pm800_regulators *pm800_data = platform_get_drvdata(pdev); |
| int i; |
| |
| for (i = 0; i < PM800_ID_RG_MAX; i++) |
| regulator_unregister(pm800_data->regulators[i]); |
| |
| return 0; |
| } |
| |
| static struct platform_driver pm800_regulator_driver = { |
| .driver = { |
| .name = "88pm80x-regulator", |
| .owner = THIS_MODULE, |
| }, |
| .probe = pm800_regulator_probe, |
| .remove = pm800_regulator_remove, |
| }; |
| |
| module_platform_driver(pm800_regulator_driver); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Joseph(Yossi) Hanin <yhanin@marvell.com>"); |
| MODULE_DESCRIPTION("Regulator Driver for Marvell 88PM800 PMIC"); |
| MODULE_ALIAS("platform:88pm800-regulator"); |