regulator: hi6421v530: add driver for hi6421v530 voltage regulator
add the driver for hi6421v530 voltage regulator Signed-off-by: Wang Xiaoyin <hw.wangxiaoyin@hisilicon.com> Signed-off-by: Guodong Xu <guodong.xu@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Wang Xiaoyin
Mark Brown
Родитель
2ea659a9ef
Коммит
5c7024ae7e
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@ -296,6 +296,16 @@ config REGULATOR_HI6421
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21 general purpose LDOs, 3 dedicated LDOs, and 5 BUCKs. All
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of them come with support to either ECO (idle) or sleep mode.
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config REGULATOR_HI6421V530
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tristate "HiSilicon Hi6421v530 PMIC voltage regulator support"
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depends on MFD_HI6421_PMIC && OF
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help
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This driver provides support for the voltage regulators on
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HiSilicon Hi6421v530 PMU / Codec IC.
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Hi6421v530 is a multi-function device which, on regulator part,
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provides 5 general purpose LDOs, and all of them come with support
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to either ECO (idle) or sleep mode.
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config REGULATOR_HI655X
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tristate "Hisilicon HI655X PMIC regulators support"
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depends on ARCH_HISI || COMPILE_TEST
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@ -38,6 +38,7 @@ obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o
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obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o
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obj-$(CONFIG_REGULATOR_GPIO) += gpio-regulator.o
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obj-$(CONFIG_REGULATOR_HI6421) += hi6421-regulator.o
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obj-$(CONFIG_REGULATOR_HI6421V530) += hi6421v530-regulator.o
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obj-$(CONFIG_REGULATOR_HI655X) += hi655x-regulator.o
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obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o
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obj-$(CONFIG_REGULATOR_ISL9305) += isl9305.o
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@ -0,0 +1,207 @@
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/*
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* Device driver for regulators in Hi6421V530 IC
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*
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* Copyright (c) <2017> HiSilicon Technologies Co., Ltd.
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* http://www.hisilicon.com
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* Copyright (c) <2017> Linaro Ltd.
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* http://www.linaro.org
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*
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* Author: Wang Xiaoyin <hw.wangxiaoyin@hisilicon.com>
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* Guodong Xu <guodong.xu@linaro.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/mfd/hi6421-pmic.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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/*
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* struct hi6421v530_regulator_info - hi6421v530 regulator information
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* @desc: regulator description
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* @mode_mask: ECO mode bitmask of LDOs; for BUCKs, this masks sleep
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* @eco_microamp: eco mode load upper limit (in uA), valid for LDOs only
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*/
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struct hi6421v530_regulator_info {
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struct regulator_desc rdesc;
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u8 mode_mask;
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u32 eco_microamp;
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};
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/* HI6421v530 regulators */
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enum hi6421v530_regulator_id {
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HI6421V530_LDO3,
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HI6421V530_LDO9,
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HI6421V530_LDO11,
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HI6421V530_LDO15,
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HI6421V530_LDO16,
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};
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static const unsigned int ldo_3_voltages[] = {
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1800000, 1825000, 1850000, 1875000,
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1900000, 1925000, 1950000, 1975000,
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2000000, 2025000, 2050000, 2075000,
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2100000, 2125000, 2150000, 2200000,
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};
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static const unsigned int ldo_9_11_voltages[] = {
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1750000, 1800000, 1825000, 2800000,
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2850000, 2950000, 3000000, 3300000,
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};
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static const unsigned int ldo_15_16_voltages[] = {
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1750000, 1800000, 2400000, 2600000,
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2700000, 2850000, 2950000, 3000000,
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};
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static const struct regulator_ops hi6421v530_ldo_ops;
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#define HI6421V530_LDO_ENABLE_TIME (350)
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/*
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* _id - LDO id name string
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* v_table - voltage table
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* vreg - voltage select register
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* vmask - voltage select mask
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* ereg - enable register
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* emask - enable mask
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* odelay - off/on delay time in uS
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* ecomask - eco mode mask
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* ecoamp - eco mode load uppler limit in uA
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*/
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#define HI6421V530_LDO(_ID, v_table, vreg, vmask, ereg, emask, \
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odelay, ecomask, ecoamp) { \
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.rdesc = { \
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.name = #_ID, \
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.of_match = of_match_ptr(#_ID), \
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.regulators_node = of_match_ptr("regulators"), \
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.ops = &hi6421v530_ldo_ops, \
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.type = REGULATOR_VOLTAGE, \
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.id = HI6421V530_##_ID, \
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.owner = THIS_MODULE, \
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.n_voltages = ARRAY_SIZE(v_table), \
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.volt_table = v_table, \
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.vsel_reg = HI6421_REG_TO_BUS_ADDR(vreg), \
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.vsel_mask = vmask, \
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.enable_reg = HI6421_REG_TO_BUS_ADDR(ereg), \
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.enable_mask = emask, \
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.enable_time = HI6421V530_LDO_ENABLE_TIME, \
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.off_on_delay = odelay, \
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}, \
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.mode_mask = ecomask, \
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.eco_microamp = ecoamp, \
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}
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/* HI6421V530 regulator information */
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static struct hi6421v530_regulator_info hi6421v530_regulator_info[] = {
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HI6421V530_LDO(LDO3, ldo_3_voltages, 0x061, 0xf, 0x060, 0x2,
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20000, 0x6, 8000),
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HI6421V530_LDO(LDO9, ldo_9_11_voltages, 0x06b, 0x7, 0x06a, 0x2,
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40000, 0x6, 8000),
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HI6421V530_LDO(LDO11, ldo_9_11_voltages, 0x06f, 0x7, 0x06e, 0x2,
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40000, 0x6, 8000),
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HI6421V530_LDO(LDO15, ldo_15_16_voltages, 0x077, 0x7, 0x076, 0x2,
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40000, 0x6, 8000),
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HI6421V530_LDO(LDO16, ldo_15_16_voltages, 0x079, 0x7, 0x078, 0x2,
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40000, 0x6, 8000),
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};
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static unsigned int hi6421v530_regulator_ldo_get_mode(
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struct regulator_dev *rdev)
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{
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struct hi6421v530_regulator_info *info;
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unsigned int reg_val;
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info = rdev_get_drvdata(rdev);
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regmap_read(rdev->regmap, rdev->desc->enable_reg, ®_val);
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if (reg_val & (info->mode_mask))
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return REGULATOR_MODE_IDLE;
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return REGULATOR_MODE_NORMAL;
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}
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static int hi6421v530_regulator_ldo_set_mode(struct regulator_dev *rdev,
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unsigned int mode)
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{
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struct hi6421v530_regulator_info *info;
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unsigned int new_mode;
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info = rdev_get_drvdata(rdev);
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switch (mode) {
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case REGULATOR_MODE_NORMAL:
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new_mode = 0;
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break;
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case REGULATOR_MODE_IDLE:
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new_mode = info->mode_mask;
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break;
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default:
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return -EINVAL;
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}
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regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
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info->mode_mask, new_mode);
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return 0;
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}
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static const struct regulator_ops hi6421v530_ldo_ops = {
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.is_enabled = regulator_is_enabled_regmap,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.list_voltage = regulator_list_voltage_table,
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.map_voltage = regulator_map_voltage_ascend,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_mode = hi6421v530_regulator_ldo_get_mode,
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.set_mode = hi6421v530_regulator_ldo_set_mode,
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};
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static int hi6421v530_regulator_probe(struct platform_device *pdev)
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{
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struct hi6421_pmic *pmic;
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struct regulator_dev *rdev;
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struct regulator_config config = { };
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unsigned int i;
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pmic = dev_get_drvdata(pdev->dev.parent);
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if (!pmic) {
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dev_err(&pdev->dev, "no pmic in the regulator parent node\n");
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return -ENODEV;
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}
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for (i = 0; i < ARRAY_SIZE(hi6421v530_regulator_info); i++) {
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config.dev = pdev->dev.parent;
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config.regmap = pmic->regmap;
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config.driver_data = &hi6421v530_regulator_info[i];
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rdev = devm_regulator_register(&pdev->dev,
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&hi6421v530_regulator_info[i].rdesc,
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&config);
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if (IS_ERR(rdev)) {
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dev_err(&pdev->dev, "failed to register regulator %s\n",
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hi6421v530_regulator_info[i].rdesc.name);
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return PTR_ERR(rdev);
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}
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}
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return 0;
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}
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static struct platform_driver hi6421v530_regulator_driver = {
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.driver = {
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.name = "hi6421v530-regulator",
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},
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.probe = hi6421v530_regulator_probe,
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};
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module_platform_driver(hi6421v530_regulator_driver);
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MODULE_AUTHOR("Wang Xiaoyin <hw.wangxiaoyin@hisilicon.com>");
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MODULE_DESCRIPTION("Hi6421v530 regulator driver");
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MODULE_LICENSE("GPL v2");
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