From 4618119b9be5f5075daf995b2ab807088b14961c Mon Sep 17 00:00:00 2001 From: Chen Feng Date: Sun, 14 Feb 2016 14:29:22 +0800 Subject: regulator: hi655x: enable regulator for hi655x PMIC Add the regulator driver for hi655x PMIC. Signed-off-by: Chen Feng Signed-off-by: Fei Wang Signed-off-by: Xinwei Kong Reviewed-by: Haojian Zhuang Signed-off-by: Mark Brown --- drivers/regulator/hi655x-regulator.c | 227 +++++++++++++++++++++++++++++++++++ 1 file changed, 227 insertions(+) create mode 100644 drivers/regulator/hi655x-regulator.c (limited to 'drivers/regulator/hi655x-regulator.c') diff --git a/drivers/regulator/hi655x-regulator.c b/drivers/regulator/hi655x-regulator.c new file mode 100644 index 000000000000..aca18466f522 --- /dev/null +++ b/drivers/regulator/hi655x-regulator.c @@ -0,0 +1,227 @@ +/* + * Device driver for regulators in Hi655x IC + * + * Copyright (c) 2016 Hisilicon. + * + * Authors: + * Chen Feng + * Fei Wang + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct hi655x_regulator { + unsigned int disable_reg; + unsigned int status_reg; + unsigned int ctrl_regs; + unsigned int ctrl_mask; + struct regulator_desc rdesc; +}; + +/* LDO7 & LDO10 */ +static const unsigned int ldo7_voltages[] = { + 1800000, 1850000, 2850000, 2900000, + 3000000, 3100000, 3200000, 3300000, +}; + +static const unsigned int ldo19_voltages[] = { + 1800000, 1850000, 1900000, 1750000, + 2800000, 2850000, 2900000, 3000000, +}; + +static const unsigned int ldo22_voltages[] = { + 900000, 1000000, 1050000, 1100000, + 1150000, 1175000, 1185000, 1200000, +}; + +enum hi655x_regulator_id { + HI655X_LDO0, + HI655X_LDO1, + HI655X_LDO2, + HI655X_LDO3, + HI655X_LDO4, + HI655X_LDO5, + HI655X_LDO6, + HI655X_LDO7, + HI655X_LDO8, + HI655X_LDO9, + HI655X_LDO10, + HI655X_LDO11, + HI655X_LDO12, + HI655X_LDO13, + HI655X_LDO14, + HI655X_LDO15, + HI655X_LDO16, + HI655X_LDO17, + HI655X_LDO18, + HI655X_LDO19, + HI655X_LDO20, + HI655X_LDO21, + HI655X_LDO22, +}; + +static int hi655x_is_enabled(struct regulator_dev *rdev) +{ + unsigned int value = 0; + + struct hi655x_regulator *regulator = rdev_get_drvdata(rdev); + + regmap_read(rdev->regmap, regulator->status_reg, &value); + return (value & BIT(regulator->ctrl_mask)); +} + +static int hi655x_disable(struct regulator_dev *rdev) +{ + int ret = 0; + + struct hi655x_regulator *regulator = rdev_get_drvdata(rdev); + + ret = regmap_write(rdev->regmap, regulator->disable_reg, + BIT(regulator->ctrl_mask)); + return ret; +} + +static struct regulator_ops hi655x_regulator_ops = { + .enable = regulator_enable_regmap, + .disable = hi655x_disable, + .is_enabled = hi655x_is_enabled, + .list_voltage = regulator_list_voltage_table, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, +}; + +static struct regulator_ops hi655x_ldo_linear_ops = { + .enable = regulator_enable_regmap, + .disable = hi655x_disable, + .is_enabled = hi655x_is_enabled, + .list_voltage = regulator_list_voltage_linear, + .get_voltage_sel = regulator_get_voltage_sel_regmap, + .set_voltage_sel = regulator_set_voltage_sel_regmap, +}; + +#define HI655X_LDO(_ID, vreg, vmask, ereg, dreg, \ + sreg, cmask, vtable) { \ + .rdesc = { \ + .name = #_ID, \ + .of_match = of_match_ptr(#_ID), \ + .ops = &hi655x_regulator_ops, \ + .regulators_node = of_match_ptr("regulators"), \ + .type = REGULATOR_VOLTAGE, \ + .id = HI655X_##_ID, \ + .owner = THIS_MODULE, \ + .n_voltages = ARRAY_SIZE(vtable), \ + .volt_table = vtable, \ + .vsel_reg = HI655X_BUS_ADDR(vreg), \ + .vsel_mask = vmask, \ + .enable_reg = HI655X_BUS_ADDR(ereg), \ + .enable_mask = BIT(cmask), \ + }, \ + .disable_reg = HI655X_BUS_ADDR(dreg), \ + .status_reg = HI655X_BUS_ADDR(sreg), \ + .ctrl_mask = cmask, \ +} + +#define HI655X_LDO_LINEAR(_ID, vreg, vmask, ereg, dreg, \ + sreg, cmask, minv, nvolt, vstep) { \ + .rdesc = { \ + .name = #_ID, \ + .of_match = of_match_ptr(#_ID), \ + .ops = &hi655x_ldo_linear_ops, \ + .regulators_node = of_match_ptr("regulators"), \ + .type = REGULATOR_VOLTAGE, \ + .id = HI655X_##_ID, \ + .owner = THIS_MODULE, \ + .min_uV = minv, \ + .n_voltages = nvolt, \ + .uV_step = vstep, \ + .vsel_reg = HI655X_BUS_ADDR(vreg), \ + .vsel_mask = vmask, \ + .enable_reg = HI655X_BUS_ADDR(ereg), \ + .enable_mask = BIT(cmask), \ + }, \ + .disable_reg = HI655X_BUS_ADDR(dreg), \ + .status_reg = HI655X_BUS_ADDR(sreg), \ + .ctrl_mask = cmask, \ +} + +static struct hi655x_regulator regulators[] = { + HI655X_LDO_LINEAR(LDO2, 0x72, 0x07, 0x29, 0x2a, 0x2b, 0x01, + 2500000, 8, 100000), + HI655X_LDO(LDO7, 0x78, 0x07, 0x29, 0x2a, 0x2b, 0x06, ldo7_voltages), + HI655X_LDO(LDO10, 0x78, 0x07, 0x29, 0x2a, 0x2b, 0x01, ldo7_voltages), + HI655X_LDO_LINEAR(LDO13, 0x7e, 0x07, 0x2c, 0x2d, 0x2e, 0x04, + 1600000, 8, 50000), + HI655X_LDO_LINEAR(LDO14, 0x7f, 0x07, 0x2c, 0x2d, 0x2e, 0x05, + 2500000, 8, 100000), + HI655X_LDO_LINEAR(LDO15, 0x80, 0x07, 0x2c, 0x2d, 0x2e, 0x06, + 1600000, 8, 50000), + HI655X_LDO_LINEAR(LDO17, 0x82, 0x07, 0x2f, 0x30, 0x31, 0x00, + 2500000, 8, 100000), + HI655X_LDO(LDO19, 0x84, 0x07, 0x2f, 0x30, 0x31, 0x02, ldo19_voltages), + HI655X_LDO_LINEAR(LDO21, 0x86, 0x07, 0x2f, 0x30, 0x31, 0x04, + 1650000, 8, 50000), + HI655X_LDO(LDO22, 0x87, 0x07, 0x2f, 0x30, 0x31, 0x05, ldo22_voltages), +}; + +static int hi655x_regulator_probe(struct platform_device *pdev) +{ + unsigned int i; + struct hi655x_regulator *regulator; + struct hi655x_pmic *pmic; + struct regulator_config config = { }; + struct regulator_dev *rdev; + + pmic = dev_get_drvdata(pdev->dev.parent); + if (!pmic) { + dev_err(&pdev->dev, "no pmic in the regulator parent node\n"); + return -ENODEV; + } + + regulator = devm_kzalloc(&pdev->dev, sizeof(*regulator), GFP_KERNEL); + if (!regulator) + return -ENOMEM; + + platform_set_drvdata(pdev, regulator); + + config.dev = pdev->dev.parent; + config.regmap = pmic->regmap; + config.driver_data = regulator; + for (i = 0; i < ARRAY_SIZE(regulators); i++) { + rdev = devm_regulator_register(&pdev->dev, + ®ulators[i].rdesc, + &config); + if (IS_ERR(rdev)) { + dev_err(&pdev->dev, "failed to register regulator %s\n", + regulator->rdesc.name); + return PTR_ERR(rdev); + } + } + return 0; +} + +static struct platform_driver hi655x_regulator_driver = { + .driver = { + .name = "hi655x-regulator", + }, + .probe = hi655x_regulator_probe, +}; +module_platform_driver(hi655x_regulator_driver); + +MODULE_AUTHOR("Chen Feng "); +MODULE_DESCRIPTION("Hisilicon Hi655x regulator driver"); +MODULE_LICENSE("GPL v2"); -- cgit v1.2.3