| /* |
| * Broadcom BCM590xx regulator driver |
| * |
| * Copyright 2014 Linaro Limited |
| * Author: Matt Porter <mporter@linaro.org> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| */ |
| |
| #include <linux/err.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/mfd/bcm590xx.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/platform_device.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/slab.h> |
| |
| /* I2C slave 0 registers */ |
| #define BCM590XX_RFLDOPMCTRL1 0x60 |
| #define BCM590XX_IOSR1PMCTRL1 0x7a |
| #define BCM590XX_IOSR2PMCTRL1 0x7c |
| #define BCM590XX_CSRPMCTRL1 0x7e |
| #define BCM590XX_SDSR1PMCTRL1 0x82 |
| #define BCM590XX_SDSR2PMCTRL1 0x86 |
| #define BCM590XX_MSRPMCTRL1 0x8a |
| #define BCM590XX_VSRPMCTRL1 0x8e |
| #define BCM590XX_RFLDOCTRL 0x96 |
| #define BCM590XX_CSRVOUT1 0xc0 |
| |
| /* I2C slave 1 registers */ |
| #define BCM590XX_GPLDO5PMCTRL1 0x16 |
| #define BCM590XX_GPLDO6PMCTRL1 0x18 |
| #define BCM590XX_GPLDO1CTRL 0x1a |
| #define BCM590XX_GPLDO2CTRL 0x1b |
| #define BCM590XX_GPLDO3CTRL 0x1c |
| #define BCM590XX_GPLDO4CTRL 0x1d |
| #define BCM590XX_GPLDO5CTRL 0x1e |
| #define BCM590XX_GPLDO6CTRL 0x1f |
| #define BCM590XX_OTG_CTRL 0x40 |
| #define BCM590XX_GPLDO1PMCTRL1 0x57 |
| #define BCM590XX_GPLDO2PMCTRL1 0x59 |
| #define BCM590XX_GPLDO3PMCTRL1 0x5b |
| #define BCM590XX_GPLDO4PMCTRL1 0x5d |
| |
| #define BCM590XX_REG_ENABLE BIT(7) |
| #define BCM590XX_VBUS_ENABLE BIT(2) |
| #define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3) |
| #define BCM590XX_SR_VSEL_MASK GENMASK(5, 0) |
| |
| /* |
| * RFLDO to VSR regulators are |
| * accessed via I2C slave 0 |
| */ |
| |
| /* LDO regulator IDs */ |
| #define BCM590XX_REG_RFLDO 0 |
| #define BCM590XX_REG_CAMLDO1 1 |
| #define BCM590XX_REG_CAMLDO2 2 |
| #define BCM590XX_REG_SIMLDO1 3 |
| #define BCM590XX_REG_SIMLDO2 4 |
| #define BCM590XX_REG_SDLDO 5 |
| #define BCM590XX_REG_SDXLDO 6 |
| #define BCM590XX_REG_MMCLDO1 7 |
| #define BCM590XX_REG_MMCLDO2 8 |
| #define BCM590XX_REG_AUDLDO 9 |
| #define BCM590XX_REG_MICLDO 10 |
| #define BCM590XX_REG_USBLDO 11 |
| #define BCM590XX_REG_VIBLDO 12 |
| |
| /* DCDC regulator IDs */ |
| #define BCM590XX_REG_CSR 13 |
| #define BCM590XX_REG_IOSR1 14 |
| #define BCM590XX_REG_IOSR2 15 |
| #define BCM590XX_REG_MSR 16 |
| #define BCM590XX_REG_SDSR1 17 |
| #define BCM590XX_REG_SDSR2 18 |
| #define BCM590XX_REG_VSR 19 |
| |
| /* |
| * GPLDO1 to VBUS regulators are |
| * accessed via I2C slave 1 |
| */ |
| |
| #define BCM590XX_REG_GPLDO1 20 |
| #define BCM590XX_REG_GPLDO2 21 |
| #define BCM590XX_REG_GPLDO3 22 |
| #define BCM590XX_REG_GPLDO4 23 |
| #define BCM590XX_REG_GPLDO5 24 |
| #define BCM590XX_REG_GPLDO6 25 |
| #define BCM590XX_REG_VBUS 26 |
| |
| #define BCM590XX_NUM_REGS 27 |
| |
| #define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR) |
| #define BCM590XX_REG_IS_GPLDO(n) \ |
| ((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS)) |
| #define BCM590XX_REG_IS_VBUS(n) (n == BCM590XX_REG_VBUS) |
| |
| struct bcm590xx_board { |
| struct regulator_init_data *bcm590xx_pmu_init_data[BCM590XX_NUM_REGS]; |
| }; |
| |
| /* LDO group A: supported voltages in microvolts */ |
| static const unsigned int ldo_a_table[] = { |
| 1200000, 1800000, 2500000, 2700000, 2800000, |
| 2900000, 3000000, 3300000, |
| }; |
| |
| /* LDO group C: supported voltages in microvolts */ |
| static const unsigned int ldo_c_table[] = { |
| 3100000, 1800000, 2500000, 2700000, 2800000, |
| 2900000, 3000000, 3300000, |
| }; |
| |
| static const unsigned int ldo_vbus[] = { |
| 5000000, |
| }; |
| |
| /* DCDC group CSR: supported voltages in microvolts */ |
| static const struct regulator_linear_range dcdc_csr_ranges[] = { |
| REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000), |
| REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000), |
| REGULATOR_LINEAR_RANGE(900000, 56, 63, 0), |
| }; |
| |
| /* DCDC group IOSR1: supported voltages in microvolts */ |
| static const struct regulator_linear_range dcdc_iosr1_ranges[] = { |
| REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000), |
| REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0), |
| REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0), |
| REGULATOR_LINEAR_RANGE(900000, 54, 63, 0), |
| }; |
| |
| /* DCDC group SDSR1: supported voltages in microvolts */ |
| static const struct regulator_linear_range dcdc_sdsr1_ranges[] = { |
| REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000), |
| REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0), |
| REGULATOR_LINEAR_RANGE(900000, 52, 63, 0), |
| }; |
| |
| struct bcm590xx_info { |
| const char *name; |
| const char *vin_name; |
| u8 n_voltages; |
| const unsigned int *volt_table; |
| u8 n_linear_ranges; |
| const struct regulator_linear_range *linear_ranges; |
| }; |
| |
| #define BCM590XX_REG_TABLE(_name, _table) \ |
| { \ |
| .name = #_name, \ |
| .n_voltages = ARRAY_SIZE(_table), \ |
| .volt_table = _table, \ |
| } |
| |
| #define BCM590XX_REG_RANGES(_name, _ranges) \ |
| { \ |
| .name = #_name, \ |
| .n_voltages = 64, \ |
| .n_linear_ranges = ARRAY_SIZE(_ranges), \ |
| .linear_ranges = _ranges, \ |
| } |
| |
| static struct bcm590xx_info bcm590xx_regs[] = { |
| BCM590XX_REG_TABLE(rfldo, ldo_a_table), |
| BCM590XX_REG_TABLE(camldo1, ldo_c_table), |
| BCM590XX_REG_TABLE(camldo2, ldo_c_table), |
| BCM590XX_REG_TABLE(simldo1, ldo_a_table), |
| BCM590XX_REG_TABLE(simldo2, ldo_a_table), |
| BCM590XX_REG_TABLE(sdldo, ldo_c_table), |
| BCM590XX_REG_TABLE(sdxldo, ldo_a_table), |
| BCM590XX_REG_TABLE(mmcldo1, ldo_a_table), |
| BCM590XX_REG_TABLE(mmcldo2, ldo_a_table), |
| BCM590XX_REG_TABLE(audldo, ldo_a_table), |
| BCM590XX_REG_TABLE(micldo, ldo_a_table), |
| BCM590XX_REG_TABLE(usbldo, ldo_a_table), |
| BCM590XX_REG_TABLE(vibldo, ldo_c_table), |
| BCM590XX_REG_RANGES(csr, dcdc_csr_ranges), |
| BCM590XX_REG_RANGES(iosr1, dcdc_iosr1_ranges), |
| BCM590XX_REG_RANGES(iosr2, dcdc_iosr1_ranges), |
| BCM590XX_REG_RANGES(msr, dcdc_iosr1_ranges), |
| BCM590XX_REG_RANGES(sdsr1, dcdc_sdsr1_ranges), |
| BCM590XX_REG_RANGES(sdsr2, dcdc_iosr1_ranges), |
| BCM590XX_REG_RANGES(vsr, dcdc_iosr1_ranges), |
| BCM590XX_REG_TABLE(gpldo1, ldo_a_table), |
| BCM590XX_REG_TABLE(gpldo2, ldo_a_table), |
| BCM590XX_REG_TABLE(gpldo3, ldo_a_table), |
| BCM590XX_REG_TABLE(gpldo4, ldo_a_table), |
| BCM590XX_REG_TABLE(gpldo5, ldo_a_table), |
| BCM590XX_REG_TABLE(gpldo6, ldo_a_table), |
| BCM590XX_REG_TABLE(vbus, ldo_vbus), |
| }; |
| |
| struct bcm590xx_reg { |
| struct regulator_desc *desc; |
| struct bcm590xx *mfd; |
| }; |
| |
| static int bcm590xx_get_vsel_register(int id) |
| { |
| if (BCM590XX_REG_IS_LDO(id)) |
| return BCM590XX_RFLDOCTRL + id; |
| else if (BCM590XX_REG_IS_GPLDO(id)) |
| return BCM590XX_GPLDO1CTRL + id; |
| else |
| return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3; |
| } |
| |
| static int bcm590xx_get_enable_register(int id) |
| { |
| int reg = 0; |
| |
| if (BCM590XX_REG_IS_LDO(id)) |
| reg = BCM590XX_RFLDOPMCTRL1 + id * 2; |
| else if (BCM590XX_REG_IS_GPLDO(id)) |
| reg = BCM590XX_GPLDO1PMCTRL1 + id * 2; |
| else |
| switch (id) { |
| case BCM590XX_REG_CSR: |
| reg = BCM590XX_CSRPMCTRL1; |
| break; |
| case BCM590XX_REG_IOSR1: |
| reg = BCM590XX_IOSR1PMCTRL1; |
| break; |
| case BCM590XX_REG_IOSR2: |
| reg = BCM590XX_IOSR2PMCTRL1; |
| break; |
| case BCM590XX_REG_MSR: |
| reg = BCM590XX_MSRPMCTRL1; |
| break; |
| case BCM590XX_REG_SDSR1: |
| reg = BCM590XX_SDSR1PMCTRL1; |
| break; |
| case BCM590XX_REG_SDSR2: |
| reg = BCM590XX_SDSR2PMCTRL1; |
| break; |
| case BCM590XX_REG_VSR: |
| reg = BCM590XX_VSRPMCTRL1; |
| break; |
| case BCM590XX_REG_VBUS: |
| reg = BCM590XX_OTG_CTRL; |
| break; |
| } |
| |
| |
| return reg; |
| } |
| |
| static const struct regulator_ops bcm590xx_ops_ldo = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .list_voltage = regulator_list_voltage_table, |
| .map_voltage = regulator_map_voltage_iterate, |
| }; |
| |
| static const struct regulator_ops bcm590xx_ops_dcdc = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .get_voltage_sel = regulator_get_voltage_sel_regmap, |
| .set_voltage_sel = regulator_set_voltage_sel_regmap, |
| .list_voltage = regulator_list_voltage_linear_range, |
| .map_voltage = regulator_map_voltage_linear_range, |
| }; |
| |
| static const struct regulator_ops bcm590xx_ops_vbus = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| }; |
| |
| #define BCM590XX_MATCH(_name, _id) \ |
| { \ |
| .name = #_name, \ |
| .driver_data = (void *)&bcm590xx_regs[BCM590XX_REG_##_id], \ |
| } |
| |
| static struct of_regulator_match bcm590xx_matches[] = { |
| BCM590XX_MATCH(rfldo, RFLDO), |
| BCM590XX_MATCH(camldo1, CAMLDO1), |
| BCM590XX_MATCH(camldo2, CAMLDO2), |
| BCM590XX_MATCH(simldo1, SIMLDO1), |
| BCM590XX_MATCH(simldo2, SIMLDO2), |
| BCM590XX_MATCH(sdldo, SDLDO), |
| BCM590XX_MATCH(sdxldo, SDXLDO), |
| BCM590XX_MATCH(mmcldo1, MMCLDO1), |
| BCM590XX_MATCH(mmcldo2, MMCLDO2), |
| BCM590XX_MATCH(audldo, AUDLDO), |
| BCM590XX_MATCH(micldo, MICLDO), |
| BCM590XX_MATCH(usbldo, USBLDO), |
| BCM590XX_MATCH(vibldo, VIBLDO), |
| BCM590XX_MATCH(csr, CSR), |
| BCM590XX_MATCH(iosr1, IOSR1), |
| BCM590XX_MATCH(iosr2, IOSR2), |
| BCM590XX_MATCH(msr, MSR), |
| BCM590XX_MATCH(sdsr1, SDSR1), |
| BCM590XX_MATCH(sdsr2, SDSR2), |
| BCM590XX_MATCH(vsr, VSR), |
| BCM590XX_MATCH(gpldo1, GPLDO1), |
| BCM590XX_MATCH(gpldo2, GPLDO2), |
| BCM590XX_MATCH(gpldo3, GPLDO3), |
| BCM590XX_MATCH(gpldo4, GPLDO4), |
| BCM590XX_MATCH(gpldo5, GPLDO5), |
| BCM590XX_MATCH(gpldo6, GPLDO6), |
| BCM590XX_MATCH(vbus, VBUS), |
| }; |
| |
| static struct bcm590xx_board *bcm590xx_parse_dt_reg_data( |
| struct platform_device *pdev, |
| struct of_regulator_match **bcm590xx_reg_matches) |
| { |
| struct bcm590xx_board *data; |
| struct device_node *np = pdev->dev.parent->of_node; |
| struct device_node *regulators; |
| struct of_regulator_match *matches = bcm590xx_matches; |
| int count = ARRAY_SIZE(bcm590xx_matches); |
| int idx = 0; |
| int ret; |
| |
| if (!np) { |
| dev_err(&pdev->dev, "of node not found\n"); |
| return NULL; |
| } |
| |
| data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); |
| if (!data) |
| return NULL; |
| |
| np = of_node_get(np); |
| regulators = of_get_child_by_name(np, "regulators"); |
| if (!regulators) { |
| dev_warn(&pdev->dev, "regulator node not found\n"); |
| return NULL; |
| } |
| |
| ret = of_regulator_match(&pdev->dev, regulators, matches, count); |
| of_node_put(regulators); |
| if (ret < 0) { |
| dev_err(&pdev->dev, "Error parsing regulator init data: %d\n", |
| ret); |
| return NULL; |
| } |
| |
| *bcm590xx_reg_matches = matches; |
| |
| for (idx = 0; idx < count; idx++) { |
| if (!matches[idx].init_data || !matches[idx].of_node) |
| continue; |
| |
| data->bcm590xx_pmu_init_data[idx] = matches[idx].init_data; |
| } |
| |
| return data; |
| } |
| |
| static int bcm590xx_probe(struct platform_device *pdev) |
| { |
| struct bcm590xx *bcm590xx = dev_get_drvdata(pdev->dev.parent); |
| struct bcm590xx_board *pmu_data = NULL; |
| struct bcm590xx_reg *pmu; |
| struct regulator_config config = { }; |
| struct bcm590xx_info *info; |
| struct regulator_init_data *reg_data; |
| struct regulator_dev *rdev; |
| struct of_regulator_match *bcm590xx_reg_matches = NULL; |
| int i; |
| |
| pmu_data = bcm590xx_parse_dt_reg_data(pdev, |
| &bcm590xx_reg_matches); |
| |
| pmu = devm_kzalloc(&pdev->dev, sizeof(*pmu), GFP_KERNEL); |
| if (!pmu) |
| return -ENOMEM; |
| |
| pmu->mfd = bcm590xx; |
| |
| platform_set_drvdata(pdev, pmu); |
| |
| pmu->desc = devm_kcalloc(&pdev->dev, |
| BCM590XX_NUM_REGS, |
| sizeof(struct regulator_desc), |
| GFP_KERNEL); |
| if (!pmu->desc) |
| return -ENOMEM; |
| |
| info = bcm590xx_regs; |
| |
| for (i = 0; i < BCM590XX_NUM_REGS; i++, info++) { |
| if (pmu_data) |
| reg_data = pmu_data->bcm590xx_pmu_init_data[i]; |
| else |
| reg_data = NULL; |
| |
| /* Register the regulators */ |
| pmu->desc[i].name = info->name; |
| pmu->desc[i].supply_name = info->vin_name; |
| pmu->desc[i].id = i; |
| pmu->desc[i].volt_table = info->volt_table; |
| pmu->desc[i].n_voltages = info->n_voltages; |
| pmu->desc[i].linear_ranges = info->linear_ranges; |
| pmu->desc[i].n_linear_ranges = info->n_linear_ranges; |
| |
| if ((BCM590XX_REG_IS_LDO(i)) || (BCM590XX_REG_IS_GPLDO(i))) { |
| pmu->desc[i].ops = &bcm590xx_ops_ldo; |
| pmu->desc[i].vsel_mask = BCM590XX_LDO_VSEL_MASK; |
| } else if (BCM590XX_REG_IS_VBUS(i)) |
| pmu->desc[i].ops = &bcm590xx_ops_vbus; |
| else { |
| pmu->desc[i].ops = &bcm590xx_ops_dcdc; |
| pmu->desc[i].vsel_mask = BCM590XX_SR_VSEL_MASK; |
| } |
| |
| if (BCM590XX_REG_IS_VBUS(i)) |
| pmu->desc[i].enable_mask = BCM590XX_VBUS_ENABLE; |
| else { |
| pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i); |
| pmu->desc[i].enable_is_inverted = true; |
| pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE; |
| } |
| pmu->desc[i].enable_reg = bcm590xx_get_enable_register(i); |
| pmu->desc[i].type = REGULATOR_VOLTAGE; |
| pmu->desc[i].owner = THIS_MODULE; |
| |
| config.dev = bcm590xx->dev; |
| config.init_data = reg_data; |
| config.driver_data = pmu; |
| if (BCM590XX_REG_IS_GPLDO(i) || BCM590XX_REG_IS_VBUS(i)) |
| config.regmap = bcm590xx->regmap_sec; |
| else |
| config.regmap = bcm590xx->regmap_pri; |
| |
| if (bcm590xx_reg_matches) |
| config.of_node = bcm590xx_reg_matches[i].of_node; |
| |
| rdev = devm_regulator_register(&pdev->dev, &pmu->desc[i], |
| &config); |
| if (IS_ERR(rdev)) { |
| dev_err(bcm590xx->dev, |
| "failed to register %s regulator\n", |
| pdev->name); |
| return PTR_ERR(rdev); |
| } |
| } |
| |
| return 0; |
| } |
| |
| static struct platform_driver bcm590xx_regulator_driver = { |
| .driver = { |
| .name = "bcm590xx-vregs", |
| }, |
| .probe = bcm590xx_probe, |
| }; |
| module_platform_driver(bcm590xx_regulator_driver); |
| |
| MODULE_AUTHOR("Matt Porter <mporter@linaro.org>"); |
| MODULE_DESCRIPTION("BCM590xx voltage regulator driver"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("platform:bcm590xx-vregs"); |