mirror of https://gitee.com/openkylin/linux.git
Merge series "regulator: add support for SY8827N regulator" from Jisheng Zhang <Jisheng.Zhang@synaptics.com>:
The SY8827N from Silergy Corp is a single output DC/DC converter. The voltage can be controlled via I2C. Jisheng Zhang (2): dt-bindings: regulator: add document bindings for sy8827n regulator: add support for SY8827N regulator .../bindings/regulator/silergy,sy8827n.yaml | 45 +++++ drivers/regulator/Kconfig | 7 + drivers/regulator/Makefile | 1 + drivers/regulator/sy8827n.c | 185 ++++++++++++++++++ 4 files changed, 238 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/silergy,sy8827n.yaml create mode 100644 drivers/regulator/sy8827n.c -- 2.27.0
This commit is contained in:
Mark Brown
commit
b3ddc40b61
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@ -0,0 +1,45 @@
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/regulator/silergy,sy8827n.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: silergy sy8827n PMIC
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maintainers:
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- Jisheng Zhang <jszhang@kernel.org>
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properties:
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compatible:
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enum:
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- silergy,sy8827n
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reg:
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maxItems: 1
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enable-gpios:
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description: GPIO to enable/disable the regulator.
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maxItems: 1
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silergy,vsel-state-high:
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type: boolean
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description:
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Indicates if the VSEL pin is set to high.
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If this property is missing, assume the VSEL pin is set to low.
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required:
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- compatible
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- reg
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examples:
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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regulator@60 {
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compatible = "silergy,sy8827n";
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reg = <0x60>;
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};
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};
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...
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@ -1009,6 +1009,13 @@ config REGULATOR_SY8824X
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help
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This driver supports SY8824C single output regulator.
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config REGULATOR_SY8827N
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tristate "Silergy SY8827N regulator"
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depends on I2C && (OF || COMPILE_TEST)
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select REGMAP_I2C
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help
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This driver supports SY8827N single output regulator.
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config REGULATOR_TPS51632
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tristate "TI TPS51632 Power Regulator"
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depends on I2C
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@ -122,6 +122,7 @@ obj-$(CONFIG_REGULATOR_STPMIC1) += stpmic1_regulator.o
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obj-$(CONFIG_REGULATOR_STW481X_VMMC) += stw481x-vmmc.o
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obj-$(CONFIG_REGULATOR_SY8106A) += sy8106a-regulator.o
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obj-$(CONFIG_REGULATOR_SY8824X) += sy8824x.o
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obj-$(CONFIG_REGULATOR_SY8827N) += sy8827n.o
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obj-$(CONFIG_REGULATOR_TI_ABB) += ti-abb-regulator.o
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obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o
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obj-$(CONFIG_REGULATOR_TPS62360) += tps62360-regulator.o
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@ -0,0 +1,185 @@
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// SPDX-License-Identifier: GPL-2.0
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//
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// SY8827N regulator driver
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//
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// Copyright (C) 2020 Synaptics Incorporated
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//
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// Author: Jisheng Zhang <jszhang@kernel.org>
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#include <linux/gpio/consumer.h>
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/of_regulator.h>
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#define SY8827N_VSEL0 0
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#define SY8827N_BUCK_EN (1 << 7)
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#define SY8827N_MODE (1 << 6)
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#define SY8827N_VSEL1 1
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#define SY8827N_CTRL 2
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#define SY8827N_NVOLTAGES 64
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#define SY8827N_VSELMIN 600000
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#define SY8827N_VSELSTEP 12500
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struct sy8827n_device_info {
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struct device *dev;
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struct regulator_desc desc;
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struct regulator_init_data *regulator;
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struct gpio_desc *en_gpio;
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unsigned int vsel_reg;
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};
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static int sy8827n_set_mode(struct regulator_dev *rdev, unsigned int mode)
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{
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struct sy8827n_device_info *di = rdev_get_drvdata(rdev);
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switch (mode) {
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case REGULATOR_MODE_FAST:
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regmap_update_bits(rdev->regmap, di->vsel_reg,
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SY8827N_MODE, SY8827N_MODE);
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break;
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case REGULATOR_MODE_NORMAL:
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regmap_update_bits(rdev->regmap, di->vsel_reg,
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SY8827N_MODE, 0);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static unsigned int sy8827n_get_mode(struct regulator_dev *rdev)
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{
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struct sy8827n_device_info *di = rdev_get_drvdata(rdev);
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u32 val;
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int ret = 0;
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ret = regmap_read(rdev->regmap, di->vsel_reg, &val);
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if (ret < 0)
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return ret;
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if (val & SY8827N_MODE)
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return REGULATOR_MODE_FAST;
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else
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return REGULATOR_MODE_NORMAL;
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}
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static const struct regulator_ops sy8827n_regulator_ops = {
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_voltage_time_sel = regulator_set_voltage_time_sel,
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.map_voltage = regulator_map_voltage_linear,
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.list_voltage = regulator_list_voltage_linear,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.set_mode = sy8827n_set_mode,
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.get_mode = sy8827n_get_mode,
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};
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static int sy8827n_regulator_register(struct sy8827n_device_info *di,
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struct regulator_config *config)
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{
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struct regulator_desc *rdesc = &di->desc;
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struct regulator_dev *rdev;
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rdesc->name = "sy8827n-reg";
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rdesc->supply_name = "vin";
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rdesc->ops = &sy8827n_regulator_ops;
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rdesc->type = REGULATOR_VOLTAGE;
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rdesc->n_voltages = SY8827N_NVOLTAGES;
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rdesc->enable_reg = di->vsel_reg;
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rdesc->enable_mask = SY8827N_BUCK_EN;
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rdesc->min_uV = SY8827N_VSELMIN;
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rdesc->uV_step = SY8827N_VSELSTEP;
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rdesc->vsel_reg = di->vsel_reg;
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rdesc->vsel_mask = rdesc->n_voltages - 1;
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rdesc->owner = THIS_MODULE;
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rdev = devm_regulator_register(di->dev, &di->desc, config);
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return PTR_ERR_OR_ZERO(rdev);
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}
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static const struct regmap_config sy8827n_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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};
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static int sy8827n_i2c_probe(struct i2c_client *client)
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{
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struct device *dev = &client->dev;
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struct device_node *np = dev->of_node;
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struct sy8827n_device_info *di;
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struct regulator_config config = { };
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struct regmap *regmap;
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int ret;
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di = devm_kzalloc(dev, sizeof(struct sy8827n_device_info), GFP_KERNEL);
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if (!di)
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return -ENOMEM;
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di->regulator = of_get_regulator_init_data(dev, np, &di->desc);
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if (!di->regulator) {
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dev_err(dev, "Platform data not found!\n");
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return -EINVAL;
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}
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di->en_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_HIGH);
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if (IS_ERR(di->en_gpio))
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return PTR_ERR(di->en_gpio);
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if (of_property_read_bool(np, "silergy,vsel-state-high"))
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di->vsel_reg = SY8827N_VSEL1;
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else
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di->vsel_reg = SY8827N_VSEL0;
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di->dev = dev;
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regmap = devm_regmap_init_i2c(client, &sy8827n_regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(dev, "Failed to allocate regmap!\n");
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return PTR_ERR(regmap);
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}
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i2c_set_clientdata(client, di);
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config.dev = di->dev;
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config.init_data = di->regulator;
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config.regmap = regmap;
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config.driver_data = di;
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config.of_node = np;
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ret = sy8827n_regulator_register(di, &config);
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if (ret < 0)
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dev_err(dev, "Failed to register regulator!\n");
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return ret;
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}
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static const struct of_device_id sy8827n_dt_ids[] = {
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{
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.compatible = "silergy,sy8827n",
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},
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{ }
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};
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MODULE_DEVICE_TABLE(of, sy8827n_dt_ids);
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static const struct i2c_device_id sy8827n_id[] = {
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{ "sy8827n", },
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{ },
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};
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MODULE_DEVICE_TABLE(i2c, sy8827n_id);
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static struct i2c_driver sy8827n_regulator_driver = {
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.driver = {
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.name = "sy8827n-regulator",
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.of_match_table = of_match_ptr(sy8827n_dt_ids),
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},
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.probe_new = sy8827n_i2c_probe,
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.id_table = sy8827n_id,
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};
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module_i2c_driver(sy8827n_regulator_driver);
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MODULE_AUTHOR("Jisheng Zhang <jszhang@kernel.org>");
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MODULE_DESCRIPTION("SY8827N regulator driver");
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MODULE_LICENSE("GPL v2");
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