From: Jieun Yi Date: Tue, 15 May 2018 02:21:59 +0000 (+0900) Subject: [9610][ERD] drivers: regulator: created regulator driver for S2MPB02 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5c84bf01b2814807585adcbc6ec941b734f75c7d;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [9610][ERD] drivers: regulator: created regulator driver for S2MPB02 Change-Id: If727403c00e0f791aa683017abb8a47fbc18376e Signed-off-by: Jieun Yi --- diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index e2dc0c793efc..cf3a3ed10043 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -744,6 +744,13 @@ config REGULATOR_S2MPU09 via I2C bus. S2MPU09 is comprised of high efficient Buck converters including Dual-Phase Buck converter, Buck-Boost converter, various LDOs. +config REGULATOR_S2MPB02 + tristate "Samsung S2MPB02 regulator" + depends on MFD_S2MPB02 + help + This driver controls a Samsung S2MPB02 regulator + via I2C bus. + config REGULATOR_S5M8767 tristate "Samsung S5M8767A voltage regulator" depends on MFD_SEC_CORE diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 2d34b1b6f904..527b2c732268 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -95,6 +95,7 @@ obj-$(CONFIG_REGULATOR_RT5033) += rt5033-regulator.o obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o obj-$(CONFIG_REGULATOR_S2MPU09) += s2mpu09-regulator.o +obj-$(CONFIG_REGULATOR_S2MPB02) += s2mpb02-regulator.o obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o obj-$(CONFIG_REGULATOR_SKY81452) += sky81452-regulator.o obj-$(CONFIG_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o diff --git a/drivers/regulator/s2mpb02-regulator.c b/drivers/regulator/s2mpb02-regulator.c new file mode 100644 index 000000000000..dda87369f85b --- /dev/null +++ b/drivers/regulator/s2mpb02-regulator.c @@ -0,0 +1,465 @@ +/* + * s2mpb02_regulator.c - Regulator driver for the Samsung s2mpb02 + * + * Copyright (C) 2014 Samsung Electronics + * + * 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. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +struct s2mpb02_data { + struct s2mpb02_dev *iodev; + int num_regulators; + struct regulator_dev *rdev[S2MPB02_REGULATOR_MAX]; + int opmode[S2MPB02_REGULATOR_MAX]; +}; + +static int s2m_enable(struct regulator_dev *rdev) +{ + struct s2mpb02_data *info = rdev_get_drvdata(rdev); + struct i2c_client *i2c = info->iodev->i2c; + + return s2mpb02_update_reg(i2c, rdev->desc->enable_reg, + info->opmode[rdev_get_id(rdev)], + rdev->desc->enable_mask); +} + +static int s2m_disable_regmap(struct regulator_dev *rdev) +{ + struct s2mpb02_data *info = rdev_get_drvdata(rdev); + struct i2c_client *i2c = info->iodev->i2c; + u8 val; + + if (rdev->desc->enable_is_inverted) + val = rdev->desc->enable_mask; + else + val = 0; + + return s2mpb02_update_reg(i2c, rdev->desc->enable_reg, + val, rdev->desc->enable_mask); +} + +static int s2m_is_enabled_regmap(struct regulator_dev *rdev) +{ + struct s2mpb02_data *info = rdev_get_drvdata(rdev); + struct i2c_client *i2c = info->iodev->i2c; + int ret; + u8 val; + + ret = s2mpb02_read_reg(i2c, rdev->desc->enable_reg, &val); + if (ret < 0) + return ret; + + if (rdev->desc->enable_is_inverted) + return (val & rdev->desc->enable_mask) == 0; + else + return (val & rdev->desc->enable_mask) != 0; +} + +static int s2m_get_voltage_sel_regmap(struct regulator_dev *rdev) +{ + struct s2mpb02_data *info = rdev_get_drvdata(rdev); + struct i2c_client *i2c = info->iodev->i2c; + int ret; + u8 val; + + ret = s2mpb02_read_reg(i2c, rdev->desc->vsel_reg, &val); + if (ret < 0) + return ret; + + val &= rdev->desc->vsel_mask; + + return val; +} + +static int s2m_set_voltage_sel_regmap(struct regulator_dev *rdev, unsigned sel) +{ + struct s2mpb02_data *info = rdev_get_drvdata(rdev); + struct i2c_client *i2c = info->iodev->i2c; + int ret; + + ret = s2mpb02_update_reg(i2c, rdev->desc->vsel_reg, + sel, rdev->desc->vsel_mask); + if (ret < 0) + goto out; + + if (rdev->desc->apply_bit) + ret = s2mpb02_update_reg(i2c, rdev->desc->apply_reg, + rdev->desc->apply_bit, + rdev->desc->apply_bit); + return ret; +out: + pr_warn("%s: failed to set voltage_sel_regmap\n", rdev->desc->name); + return ret; +} + +static int s2m_set_voltage_sel_regmap_buck(struct regulator_dev *rdev, + unsigned sel) +{ + struct s2mpb02_data *info = rdev_get_drvdata(rdev); + struct i2c_client *i2c = info->iodev->i2c; + int ret; + + ret = s2mpb02_write_reg(i2c, rdev->desc->vsel_reg, sel); + if (ret < 0) + goto out; + + if (rdev->desc->apply_bit) + ret = s2mpb02_update_reg(i2c, rdev->desc->apply_reg, + rdev->desc->apply_bit, + rdev->desc->apply_bit); + return ret; +out: + pr_warn("%s: failed to set voltage_sel_regmap\n", rdev->desc->name); + return ret; +} + +static int s2m_set_voltage_time_sel(struct regulator_dev *rdev, + unsigned int old_selector, + unsigned int new_selector) +{ + int old_volt, new_volt; + + /* sanity check */ + if (!rdev->desc->ops->list_voltage) + return -EINVAL; + + old_volt = rdev->desc->ops->list_voltage(rdev, old_selector); + new_volt = rdev->desc->ops->list_voltage(rdev, new_selector); + + if (old_selector < new_selector) + return DIV_ROUND_UP(new_volt - old_volt, S2MPB02_RAMP_DELAY); + + return 0; +} + +static struct regulator_ops s2mpb02_ldo_ops = { + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .is_enabled = s2m_is_enabled_regmap, + .enable = s2m_enable, + .disable = s2m_disable_regmap, + .get_voltage_sel = s2m_get_voltage_sel_regmap, + .set_voltage_sel = s2m_set_voltage_sel_regmap, + .set_voltage_time_sel = s2m_set_voltage_time_sel, +}; + +static struct regulator_ops s2mpb02_buck_ops = { + .list_voltage = regulator_list_voltage_linear, + .map_voltage = regulator_map_voltage_linear, + .is_enabled = s2m_is_enabled_regmap, + .enable = s2m_enable, + .disable = s2m_disable_regmap, + .get_voltage_sel = s2m_get_voltage_sel_regmap, + .set_voltage_sel = s2m_set_voltage_sel_regmap_buck, + .set_voltage_time_sel = s2m_set_voltage_time_sel, +}; + +#define _BUCK(macro) S2MPB02_BUCK##macro +#define _buck_ops(num) s2mpb02_buck_ops##num + +#define _LDO(macro) S2MPB02_LDO##macro +#define _REG(ctrl) S2MPB02_REG##ctrl +#define _ldo_ops(num) s2mpb02_ldo_ops##num +#define _TIME(macro) S2MPB02_ENABLE_TIME##macro + +#define BUCK_DESC(_name, _id, _ops, m, s, v, e, t) { \ + .name = _name, \ + .id = _id, \ + .ops = _ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = m, \ + .uV_step = s, \ + .n_voltages = S2MPB02_BUCK_N_VOLTAGES, \ + .vsel_reg = v, \ + .vsel_mask = S2MPB02_BUCK_VSEL_MASK, \ + .enable_reg = e, \ + .enable_mask = S2MPB02_BUCK_ENABLE_MASK, \ + .enable_time = t \ +} + +#define LDO_DESC(_name, _id, _ops, m, s, v, e, t) { \ + .name = _name, \ + .id = _id, \ + .ops = _ops, \ + .type = REGULATOR_VOLTAGE, \ + .owner = THIS_MODULE, \ + .min_uV = m, \ + .uV_step = s, \ + .n_voltages = S2MPB02_LDO_N_VOLTAGES, \ + .vsel_reg = v, \ + .vsel_mask = S2MPB02_LDO_VSEL_MASK, \ + .enable_reg = e, \ + .enable_mask = S2MPB02_LDO_ENABLE_MASK, \ + .enable_time = t \ +} + +static struct regulator_desc regulators[S2MPB02_REGULATOR_MAX] = { + /* name, id, ops, min_uv, uV_step, vsel_reg, enable_reg */ + LDO_DESC("s2mpb02-ldo1", _LDO(1), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP1), _REG(_L1CTRL), + _REG(_L1CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo2", _LDO(2), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP1), _REG(_L2CTRL), + _REG(_L2CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo3", _LDO(3), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP1), _REG(_L3CTRL), + _REG(_L3CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo4", _LDO(4), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP1), _REG(_L4CTRL), + _REG(_L4CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo5", _LDO(5), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP1), _REG(_L5CTRL), + _REG(_L5CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo6", _LDO(6), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L6CTRL), + _REG(_L6CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo7", _LDO(7), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L7CTRL), + _REG(_L7CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo8", _LDO(8), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L8CTRL), + _REG(_L8CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo9", _LDO(9), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L9CTRL), + _REG(_L9CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo10", _LDO(10), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L10CTRL), + _REG(_L10CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo11", _LDO(11), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L11CTRL), + _REG(_L11CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo12", _LDO(12), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L12CTRL), + _REG(_L12CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo13", _LDO(13), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L13CTRL), + _REG(_L13CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo14", _LDO(14), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L14CTRL), + _REG(_L14CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo15", _LDO(15), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L15CTRL), + _REG(_L15CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo16", _LDO(16), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L16CTRL), + _REG(_L16CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo17", _LDO(17), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L17CTRL), + _REG(_L17CTRL), _TIME(_LDO)), + LDO_DESC("s2mpb02-ldo18", _LDO(18), &_ldo_ops(), _LDO(_MIN1), + _LDO(_STEP2), _REG(_L18CTRL), + _REG(_L18CTRL), _TIME(_LDO)), + BUCK_DESC("s2mpb02-buck1", _BUCK(1), &_buck_ops(), _BUCK(_MIN1), + _BUCK(_STEP1), _REG(_B1CTRL2), + _REG(_B1CTRL1), _TIME(_BUCK)), + BUCK_DESC("s2mpb02-buck2", _BUCK(2), &_buck_ops(), _BUCK(_MIN1), + _BUCK(_STEP1), _REG(_B2CTRL2), + _REG(_B2CTRL1), _TIME(_BUCK)), + BUCK_DESC("s2mpb02-bb", S2MPB02_BB1, &_buck_ops(), _BUCK(_MIN2), + _BUCK(_STEP2), _REG(_BB1CTRL2), + _REG(_BB1CTRL1), _TIME(_BB)), +}; + +#ifdef CONFIG_OF +static int s2mpb02_pmic_dt_parse_pdata(struct s2mpb02_dev *iodev, + struct s2mpb02_platform_data *pdata) +{ + struct device_node *pmic_np, *regulators_np, *reg_np; + struct s2mpb02_regulator_data *rdata; + unsigned int i; + + pmic_np = iodev->dev->of_node; + if (!pmic_np) { + dev_err(iodev->dev, "could not find pmic sub-node\n"); + return -ENODEV; + } + + regulators_np = of_find_node_by_name(pmic_np, "regulators"); + if (!regulators_np) { + dev_err(iodev->dev, "could not find regulators sub-node\n"); + return -EINVAL; + } + + /* count the number of regulators to be supported in pmic */ + pdata->num_regulators = 0; + for_each_child_of_node(regulators_np, reg_np) { + pdata->num_regulators++; + } + + rdata = devm_kzalloc(iodev->dev, sizeof(*rdata) * + pdata->num_regulators, GFP_KERNEL); + if (!rdata) { + dev_err(iodev->dev, + "could not allocate memory for regulator data\n"); + return -ENOMEM; + } + + pdata->regulators = rdata; + for_each_child_of_node(regulators_np, reg_np) { + for (i = 0; i < ARRAY_SIZE(regulators); i++) + if (!of_node_cmp(reg_np->name, + regulators[i].name)) + break; + + if (i == ARRAY_SIZE(regulators)) { + dev_warn(iodev->dev, + "don't know how to configure regulator %s\n", + reg_np->name); + continue; + } + + rdata->id = i; + rdata->initdata = of_get_regulator_init_data( + iodev->dev, reg_np, + ®ulators[i]); + rdata->reg_node = reg_np; + rdata++; + } + of_node_put(regulators_np); + + return 0; +} +#else +static int s2mpb02_pmic_dt_parse_pdata(struct s2mpb02_dev *iodev, + struct s2mpb02_platform_data *pdata) +{ + return 0; +} +#endif /* CONFIG_OF */ + +static int s2mpb02_pmic_probe(struct platform_device *pdev) +{ + struct s2mpb02_dev *iodev = dev_get_drvdata(pdev->dev.parent); + struct s2mpb02_platform_data *pdata = iodev->pdata; + struct regulator_config config = { }; + struct s2mpb02_data *s2mpb02; + struct i2c_client *i2c; + int i, ret; + + dev_info(&pdev->dev, "%s\n", __func__); + if (!pdata) { + pr_info("[%s:%d] !pdata\n", __FILE__, __LINE__); + dev_err(pdev->dev.parent, "No platform init data supplied.\n"); + return -ENODEV; + } + + if (iodev->dev->of_node) { + ret = s2mpb02_pmic_dt_parse_pdata(iodev, pdata); + if (ret) + return ret; + } + + s2mpb02 = devm_kzalloc(&pdev->dev, sizeof(struct s2mpb02_data), + GFP_KERNEL); + if (!s2mpb02) { + pr_info("[%s:%d] if (!s2mpb02)\n", __FILE__, __LINE__); + return -ENOMEM; + } + + s2mpb02->iodev = iodev; + s2mpb02->num_regulators = pdata->num_regulators; + platform_set_drvdata(pdev, s2mpb02); + i2c = s2mpb02->iodev->i2c; + + for (i = 0; i < pdata->num_regulators; i++) { + int id = pdata->regulators[i].id; + config.dev = &pdev->dev; + config.init_data = pdata->regulators[i].initdata; + config.driver_data = s2mpb02; + config.of_node = pdata->regulators[i].reg_node; + s2mpb02->opmode[id] = regulators[id].enable_mask; + s2mpb02->rdev[i] = regulator_register(®ulators[id], &config); + if (IS_ERR(s2mpb02->rdev[i])) { + ret = PTR_ERR(s2mpb02->rdev[i]); + dev_err(&pdev->dev, "regulator init failed for %d\n", + id); + s2mpb02->rdev[i] = NULL; + goto err; + } + } + + dev_info(&pdev->dev, "%s ended\n", __func__); + return 0; + err: + pr_info("[%s:%d] err:\n", __FILE__, __LINE__); + for (i = 0; i < s2mpb02->num_regulators; i++) + if (s2mpb02->rdev[i]) + regulator_unregister(s2mpb02->rdev[i]); + + devm_kfree(&pdev->dev, (void*)s2mpb02); + + return ret; +} + +static int s2mpb02_pmic_remove(struct platform_device *pdev) +{ + struct s2mpb02_data *s2mpb02 = platform_get_drvdata(pdev); + int i; + dev_info(&pdev->dev, "%s\n", __func__); + for (i = 0; i < s2mpb02->num_regulators; i++) + if (s2mpb02->rdev[i]) + regulator_unregister(s2mpb02->rdev[i]); + + return 0; +} + +static const struct platform_device_id s2mpb02_pmic_id[] = { + {"s2mpb02-regulator", 0}, + {}, +}; +MODULE_DEVICE_TABLE(platform, s2mpb02_pmic_id); + +static struct platform_driver s2mpb02_pmic_driver = { + .driver = { + .name = "s2mpb02-regulator", + .owner = THIS_MODULE, + .suppress_bind_attrs = true, + }, + .probe = s2mpb02_pmic_probe, + .remove = s2mpb02_pmic_remove, + .id_table = s2mpb02_pmic_id, +}; + +static int __init s2mpb02_pmic_init(void) +{ + return platform_driver_register(&s2mpb02_pmic_driver); +} +subsys_initcall(s2mpb02_pmic_init); + +static void __exit s2mpb02_pmic_cleanup(void) +{ + platform_driver_unregister(&s2mpb02_pmic_driver); +} + +module_exit(s2mpb02_pmic_cleanup); + +MODULE_DESCRIPTION("SAMSUNG s2mpb02 Regulator Driver"); +MODULE_LICENSE("GPL");