/* * s2dos05.c - Regulator driver for the Samsung s2dos05 * * Copyright (C) 2016 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 #include #include #include #include #include struct s2dos05_data { struct s2dos05_dev *iodev; int num_regulators; struct regulator_dev *rdev[S2DOS05_REGULATOR_MAX]; #if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC) u8 read_addr; u8 read_val; struct device *dev; #endif }; int s2dos05_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest) { struct s2dos05_data *info = i2c_get_clientdata(i2c); struct s2dos05_dev *s2dos05 = info->iodev; int ret; mutex_lock(&s2dos05->i2c_lock); ret = i2c_smbus_read_byte_data(i2c, reg); mutex_unlock(&s2dos05->i2c_lock); if (ret < 0) { pr_info("%s:%s reg(0x%02hhx), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret); return ret; } ret &= 0xff; *dest = ret; return 0; } EXPORT_SYMBOL_GPL(s2dos05_read_reg); int s2dos05_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf) { struct s2dos05_data *info = i2c_get_clientdata(i2c); struct s2dos05_dev *s2dos05 = info->iodev; int ret; mutex_lock(&s2dos05->i2c_lock); ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf); mutex_unlock(&s2dos05->i2c_lock); if (ret < 0) return ret; return 0; } EXPORT_SYMBOL_GPL(s2dos05_bulk_read); int s2dos05_read_word(struct i2c_client *i2c, u8 reg) { struct s2dos05_data *info = i2c_get_clientdata(i2c); struct s2dos05_dev *s2dos05 = info->iodev; int ret; mutex_lock(&s2dos05->i2c_lock); ret = i2c_smbus_read_word_data(i2c, reg); mutex_unlock(&s2dos05->i2c_lock); if (ret < 0) return ret; return ret; } EXPORT_SYMBOL_GPL(s2dos05_read_word); int s2dos05_write_reg(struct i2c_client *i2c, u8 reg, u8 value) { struct s2dos05_data *info = i2c_get_clientdata(i2c); struct s2dos05_dev *s2dos05 = info->iodev; int ret; mutex_lock(&s2dos05->i2c_lock); ret = i2c_smbus_write_byte_data(i2c, reg, value); mutex_unlock(&s2dos05->i2c_lock); if (ret < 0) pr_info("%s:%s reg(0x%02hhx), ret(%d)\n", MFD_DEV_NAME, __func__, reg, ret); return ret; } EXPORT_SYMBOL_GPL(s2dos05_write_reg); int s2dos05_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf) { struct s2dos05_data *info = i2c_get_clientdata(i2c); struct s2dos05_dev *s2dos05 = info->iodev; int ret; mutex_lock(&s2dos05->i2c_lock); ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf); mutex_unlock(&s2dos05->i2c_lock); if (ret < 0) return ret; return 0; } EXPORT_SYMBOL_GPL(s2dos05_bulk_write); int s2dos05_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask) { struct s2dos05_data *info = i2c_get_clientdata(i2c); struct s2dos05_dev *s2dos05 = info->iodev; int ret; u8 old_val, new_val; mutex_lock(&s2dos05->i2c_lock); ret = i2c_smbus_read_byte_data(i2c, reg); if (ret >= 0) { old_val = ret & 0xff; new_val = (val & mask) | (old_val & (~mask)); ret = i2c_smbus_write_byte_data(i2c, reg, new_val); } mutex_unlock(&s2dos05->i2c_lock); return ret; } EXPORT_SYMBOL_GPL(s2dos05_update_reg); static int s2m_enable(struct regulator_dev *rdev) { struct s2dos05_data *info = rdev_get_drvdata(rdev); struct i2c_client *i2c = info->iodev->i2c; return s2dos05_update_reg(i2c, rdev->desc->enable_reg, rdev->desc->enable_mask, rdev->desc->enable_mask); } static int s2m_disable_regmap(struct regulator_dev *rdev) { struct s2dos05_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 s2dos05_update_reg(i2c, rdev->desc->enable_reg, val, rdev->desc->enable_mask); } static int s2m_is_enabled_regmap(struct regulator_dev *rdev) { struct s2dos05_data *info = rdev_get_drvdata(rdev); struct i2c_client *i2c = info->iodev->i2c; int ret; u8 val; ret = s2dos05_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 s2dos05_data *info = rdev_get_drvdata(rdev); struct i2c_client *i2c = info->iodev->i2c; int ret; u8 val; ret = s2dos05_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 s2dos05_data *info = rdev_get_drvdata(rdev); struct i2c_client *i2c = info->iodev->i2c; int ret; ret = s2dos05_update_reg(i2c, rdev->desc->vsel_reg, sel, rdev->desc->vsel_mask); if (ret < 0) goto out; if (rdev->desc->apply_bit) ret = s2dos05_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 s2dos05_data *info = rdev_get_drvdata(rdev); struct i2c_client *i2c = info->iodev->i2c; int ret; ret = s2dos05_write_reg(i2c, rdev->desc->vsel_reg, sel); if (ret < 0) goto out; if (rdev->desc->apply_bit) ret = s2dos05_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, S2DOS05_RAMP_DELAY); return 0; } static struct regulator_ops s2dos05_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 s2dos05_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) S2DOS05_BUCK##macro #define _buck_ops(num) s2dos05_buck_ops##num #define _LDO(macro) S2DOS05_LDO##macro #define _REG(ctrl) S2DOS05_REG##ctrl #define _ldo_ops(num) s2dos05_ldo_ops##num #define _MASK(macro) S2DOS05_ENABLE_MASK##macro #define _TIME(macro) S2DOS05_ENABLE_TIME##macro #define BUCK_DESC(_name, _id, _ops, m, s, v, e, em, t) { \ .name = _name, \ .id = _id, \ .ops = _ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = m, \ .uV_step = s, \ .n_voltages = S2DOS05_BUCK_N_VOLTAGES, \ .vsel_reg = v, \ .vsel_mask = S2DOS05_BUCK_VSEL_MASK, \ .enable_reg = e, \ .enable_mask = em, \ .enable_time = t \ } #define LDO_DESC(_name, _id, _ops, m, s, v, e, em, t) { \ .name = _name, \ .id = _id, \ .ops = _ops, \ .type = REGULATOR_VOLTAGE, \ .owner = THIS_MODULE, \ .min_uV = m, \ .uV_step = s, \ .n_voltages = S2DOS05_LDO_N_VOLTAGES, \ .vsel_reg = v, \ .vsel_mask = S2DOS05_LDO_VSEL_MASK, \ .enable_reg = e, \ .enable_mask = em, \ .enable_time = t \ } static struct regulator_desc regulators[S2DOS05_REGULATOR_MAX] = { /* name, id, ops, min_uv, uV_step, vsel_reg, enable_reg */ LDO_DESC("s2dos05-ldo1", _LDO(1), &_ldo_ops(), _LDO(_MIN1), _LDO(_STEP1), _REG(_LDO1_CFG), _REG(_EN), _MASK(_L1), _TIME(_LDO)), LDO_DESC("s2dos05-ldo2", _LDO(2), &_ldo_ops(), _LDO(_MIN1), _LDO(_STEP1), _REG(_LDO2_CFG), _REG(_EN), _MASK(_L2), _TIME(_LDO)), LDO_DESC("s2dos05-ldo3", _LDO(3), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP1), _REG(_LDO3_CFG), _REG(_EN), _MASK(_L3), _TIME(_LDO)), LDO_DESC("s2dos05-ldo4", _LDO(4), &_ldo_ops(), _LDO(_MIN2), _LDO(_STEP1), _REG(_LDO4_CFG), _REG(_EN), _MASK(_L4), _TIME(_LDO)), BUCK_DESC("s2dos05-buck1", _BUCK(1), &_buck_ops(), _BUCK(_MIN1), _BUCK(_STEP1), _REG(_BUCK_VOUT), _REG(_EN), _MASK(_B1), _TIME(_BUCK)), }; static irqreturn_t s2dos05_irq_thread(int irq, void *irq_data) { struct s2dos05_data *s2dos05 = irq_data; u8 val = 0; s2dos05_read_reg(s2dos05->iodev->i2c, S2DOS05_REG_IRQ, &val); pr_info("%s:irq(%d) S2DOS05_REG_IRQ : 0x%02hhx\n", __func__, irq, val); return IRQ_HANDLED; } #if IS_ENABLED(CONFIG_OF) static int s2dos05_pmic_dt_parse_pdata(struct device *dev, struct s2dos05_platform_data *pdata) { struct device_node *pmic_np, *regulators_np, *reg_np; struct s2dos05_regulator_data *rdata; size_t i; int ret; u32 val; pmic_np = dev->of_node; if (!pmic_np) { dev_err(dev, "could not find pmic sub-node\n"); return -ENODEV; } pdata->dp_pmic_irq = of_get_named_gpio(pmic_np, "s2dos05,s2dos05_int", 0); if (pdata->dp_pmic_irq < 0) pr_err("%s error reading s2dos05_irq = %d\n", __func__, pdata->dp_pmic_irq); pdata->wakeup = of_property_read_bool(pmic_np, "s2dos05,wakeup"); pdata->adc_mode = 0; ret = of_property_read_u32(pmic_np, "adc_mode", &val); if (ret) return -EINVAL; pdata->adc_mode = val; pdata->adc_sync_mode = 0; ret = of_property_read_u32(pmic_np, "adc_sync_mode", &val); if (ret) return -EINVAL; pdata->adc_sync_mode = val; regulators_np = of_find_node_by_name(pmic_np, "regulators"); if (!regulators_np) { dev_err(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(dev, sizeof(*rdata) * pdata->num_regulators, GFP_KERNEL); if (!rdata) { dev_err(dev, "could not allocate memory for regulator data\n"); return -ENOMEM; } pdata->regulators = rdata; pdata->num_rdata = 0; 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(dev, "don't know how to configure regulator %s\n", reg_np->name); continue; } rdata->id = i; rdata->initdata = of_get_regulator_init_data( dev, reg_np, ®ulators[i]); rdata->reg_node = reg_np; rdata++; pdata->num_rdata++; } of_node_put(regulators_np); return 0; } #else static int s2dos05_pmic_dt_parse_pdata(struct s2dos05_dev *iodev, struct s2dos05_platform_data *pdata) { return 0; } #endif /* CONFIG_OF */ #if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC) static ssize_t s2dos05_read_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size) { struct s2dos05_data *s2dos05 = dev_get_drvdata(dev); int ret; u8 val, reg_addr; if (buf == NULL) { pr_info("%s: empty buffer\n", __func__); return -1; } ret = kstrtou8(buf, 0, ®_addr); if (ret < 0) pr_info("%s: fail to transform i2c address\n", __func__); ret = s2dos05_read_reg(s2dos05->iodev->i2c, reg_addr, &val); if (ret < 0) pr_info("%s: fail to read i2c address\n", __func__); pr_info("%s: reg(0x%02hhx) data(0x%02hhx)\n", __func__, reg_addr, val); s2dos05->read_addr = reg_addr; s2dos05->read_val = val; return size; } static ssize_t s2dos05_read_show(struct device *dev, struct device_attribute *attr, char *buf) { struct s2dos05_data *s2dos05 = dev_get_drvdata(dev); return sprintf(buf, "0x%02hhx: 0x%02hhx\n", s2dos05->read_addr, s2dos05->read_val); } static ssize_t s2dos05_write_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size) { struct s2dos05_data *s2dos05 = dev_get_drvdata(dev); int ret; u8 reg = 0, data = 0; if (buf == NULL) { pr_info("%s: empty buffer\n", __func__); return size; } ret = sscanf(buf, "0x%02hhx 0x%02hhx", ®, &data); if (ret != 2) { pr_info("%s: input error\n", __func__); return size; } pr_info("%s: reg(0x%02hhx) data(0x%02hhx)\n", __func__, reg, data); ret = s2dos05_write_reg(s2dos05->iodev->i2c, reg, data); if (ret < 0) pr_info("%s: fail to write i2c addr/data\n", __func__); return size; } static ssize_t s2dos05_write_show(struct device *dev, struct device_attribute *attr, char *buf) { return sprintf(buf, "echo (register addr.) (data) > s2dos05_write\n"); } #define ATTR_REGULATOR (2) static struct pmic_device_attribute regulator_attr[] = { PMIC_ATTR(s2dos05_write, S_IRUGO | S_IWUSR, s2dos05_write_show, s2dos05_write_store), PMIC_ATTR(s2dos05_read, S_IRUGO | S_IWUSR, s2dos05_read_show, s2dos05_read_store), }; static int s2dos05_create_sysfs(struct s2dos05_data *s2dos05) { struct device *s2dos05_pmic = s2dos05->dev; struct device *dev = s2dos05->iodev->dev; char device_name[32] = {0, }; int err = -ENODEV, i = 0; pr_info("%s()\n", __func__); s2dos05->read_addr = 0; s2dos05->read_val = 0; /* Dynamic allocation for device name */ snprintf(device_name, sizeof(device_name) - 1, "%s@%s", dev_driver_string(dev), dev_name(dev)); s2dos05_pmic = pmic_device_create(s2dos05, device_name); s2dos05->dev = s2dos05_pmic; /* Create sysfs entries */ for (i = 0; i < ATTR_REGULATOR; i++) { err = device_create_file(s2dos05_pmic, ®ulator_attr[i].dev_attr); if (err) goto remove_pmic_device; } return 0; remove_pmic_device: for (i--; i >= 0; i--) device_remove_file(s2dos05_pmic, ®ulator_attr[i].dev_attr); pmic_device_destroy(s2dos05_pmic->devt); return -1; } #endif static int s2dos05_pmic_probe(struct i2c_client *i2c, const struct i2c_device_id *dev_id) { struct s2dos05_dev *iodev; struct s2dos05_platform_data *pdata = i2c->dev.platform_data; struct regulator_config config = { }; struct s2dos05_data *s2dos05; size_t i; int ret = 0; u8 val = 0, mask = 0; pr_info("%s:%s\n", MFD_DEV_NAME, __func__); iodev = devm_kzalloc(&i2c->dev, sizeof(struct s2dos05_dev), GFP_KERNEL); if (!iodev) { dev_err(&i2c->dev, "%s: Failed to alloc mem for s2dos05\n", __func__); return -ENOMEM; } if (i2c->dev.of_node) { pdata = devm_kzalloc(&i2c->dev, sizeof(struct s2dos05_platform_data), GFP_KERNEL); if (!pdata) { dev_err(&i2c->dev, "Failed to allocate memory\n"); ret = -ENOMEM; goto err_pdata; } ret = s2dos05_pmic_dt_parse_pdata(&i2c->dev, pdata); if (ret < 0) { dev_err(&i2c->dev, "Failed to get device of_node\n"); goto err_pdata; } i2c->dev.platform_data = pdata; } else pdata = i2c->dev.platform_data; iodev->dev = &i2c->dev; iodev->i2c = i2c; if (pdata) { iodev->pdata = pdata; iodev->wakeup = pdata->wakeup; } else { ret = -EINVAL; goto err_pdata; } mutex_init(&iodev->i2c_lock); s2dos05 = devm_kzalloc(&i2c->dev, sizeof(struct s2dos05_data), GFP_KERNEL); if (!s2dos05) { pr_info("[%s:%d] if (!s2dos05)\n", __FILE__, __LINE__); ret = -ENOMEM; goto err_s2dos05_data; } i2c_set_clientdata(i2c, s2dos05); s2dos05->iodev = iodev; s2dos05->num_regulators = pdata->num_rdata; for (i = 0; i < pdata->num_rdata; i++) { int id = pdata->regulators[i].id; config.dev = &i2c->dev; config.init_data = pdata->regulators[i].initdata; config.driver_data = s2dos05; config.of_node = pdata->regulators[i].reg_node; s2dos05->rdev[i] = devm_regulator_register(&i2c->dev, ®ulators[id], &config); if (IS_ERR(s2dos05->rdev[i])) { ret = PTR_ERR(s2dos05->rdev[i]); dev_err(&i2c->dev, "regulator init failed for %d\n", id); s2dos05->rdev[i] = NULL; goto err_s2dos05_data; } } iodev->adc_mode = pdata->adc_mode; iodev->adc_sync_mode = pdata->adc_sync_mode; if (iodev->adc_mode > 0) s2dos05_powermeter_init(iodev); val = (S2DOS05_IRQ_PWRMT_MASK | S2DOS05_IRQ_TSD_MASK | S2DOS05_IRQ_UVLO_MASK | S2DOS05_IRQ_OCD_MASK); mask = (S2DOS05_IRQ_PWRMT_MASK | S2DOS05_IRQ_TSD_MASK | S2DOS05_IRQ_SSD_MASK | S2DOS05_IRQ_SCP_MASK | S2DOS05_IRQ_UVLO_MASK | S2DOS05_IRQ_OCD_MASK); ret = s2dos05_update_reg(iodev->i2c, S2DOS05_REG_IRQ_MASK, val, mask); if (ret < 0) { dev_err(&i2c->dev, "Failed to mask IRQ MASK address\n"); return ret; } if (pdata->dp_pmic_irq > 0) { iodev->dp_pmic_irq = gpio_to_irq(pdata->dp_pmic_irq); pr_info("%s : dp_pmic_irq = %d\n", __func__, iodev->dp_pmic_irq); if (iodev->dp_pmic_irq > 0) { ret = request_threaded_irq(iodev->dp_pmic_irq, NULL, s2dos05_irq_thread, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "dp-pmic-irq", s2dos05); if (ret) { dev_err(&i2c->dev, "%s: Failed to Request IRQ\n", __func__); goto err_s2dos05_data; } ret = enable_irq_wake(iodev->dp_pmic_irq); if (ret < 0) dev_err(&i2c->dev, "%s: Failed to Enable Wakeup Source(%d)\n", __func__, ret); } else { dev_err(&i2c->dev, "%s: Failed gpio_to_irq(%d)\n", __func__, iodev->dp_pmic_irq); goto err_s2dos05_data; } } #if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC) ret = s2dos05_create_sysfs(s2dos05); if (ret < 0) { pr_err("%s: s2dos05_create_sysfs fail\n", __func__); goto err_s2dos05_data; } #endif return ret; err_s2dos05_data: mutex_destroy(&iodev->i2c_lock); err_pdata: return ret; } #if IS_ENABLED(CONFIG_OF) static struct of_device_id s2dos05_i2c_dt_ids[] = { { .compatible = "samsung,s2dos05pmic" }, { }, }; #endif /* CONFIG_OF */ static int s2dos05_pmic_remove(struct i2c_client *i2c) { struct s2dos05_data *info = i2c_get_clientdata(i2c); #if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC) struct device *s2dos05_pmic = info->dev; int i = 0; dev_info(&i2c->dev, "%s\n", __func__); /* Remove sysfs entries */ for (i = 0; i < ATTR_REGULATOR; i++) device_remove_file(s2dos05_pmic, ®ulator_attr[i].dev_attr); pmic_device_destroy(s2dos05_pmic->devt); #else dev_info(&i2c->dev, "%s\n", __func__); #endif if (info->iodev->adc_mode > 0) s2dos05_powermeter_deinit(info->iodev); return 0; } #if IS_ENABLED(CONFIG_PM) static int s2dos05_pmic_suspend(struct device *dev) { struct i2c_client *i2c = to_i2c_client(dev); struct s2dos05_data *info = i2c_get_clientdata(i2c); struct s2dos05_dev *s2dos05 = info->iodev; pr_info("%s adc_mode : %d\n", __func__, s2dos05->adc_mode); if (s2dos05->adc_mode > 0) { s2dos05_read_reg(s2dos05->i2c, S2DOS05_REG_PWRMT_CTRL2, &s2dos05->adc_en_val); if (s2dos05->adc_en_val & 0x80) s2dos05_update_reg(s2dos05->i2c, S2DOS05_REG_PWRMT_CTRL2, 0, ADC_EN_MASK); } return 0; } static int s2dos05_pmic_resume(struct device *dev) { struct i2c_client *i2c = to_i2c_client(dev); struct s2dos05_data *info = i2c_get_clientdata(i2c); struct s2dos05_dev *s2dos05 = info->iodev; pr_info("%s adc_mode : %d\n", __func__, s2dos05->adc_mode); if (s2dos05->adc_mode > 0) s2dos05_update_reg(s2dos05->i2c, S2DOS05_REG_PWRMT_CTRL2, s2dos05->adc_en_val & 0x80, ADC_EN_MASK); return 0; } #else #define s2dos05_pmic_suspend NULL #define s2dos05_pmic_resume NULL #endif /* CONFIG_PM */ static const struct dev_pm_ops s2dos05_pmic_pm = { .suspend = s2dos05_pmic_suspend, .resume = s2dos05_pmic_resume, }; #if IS_ENABLED(CONFIG_OF) static const struct i2c_device_id s2dos05_pmic_id[] = { {"s2dos05-regulator", 0}, {}, }; #endif static struct i2c_driver s2dos05_i2c_driver = { .driver = { .name = "s2dos05-regulator", .owner = THIS_MODULE, .pm = &s2dos05_pmic_pm, #if IS_ENABLED(CONFIG_OF) .of_match_table = s2dos05_i2c_dt_ids, #endif /* CONFIG_OF */ .suppress_bind_attrs = true, }, .probe = s2dos05_pmic_probe, .remove = s2dos05_pmic_remove, .id_table = s2dos05_pmic_id, }; static int __init s2dos05_i2c_init(void) { pr_info("%s:%s\n", MFD_DEV_NAME, __func__); return i2c_add_driver(&s2dos05_i2c_driver); } subsys_initcall(s2dos05_i2c_init); static void __exit s2dos05_i2c_exit(void) { i2c_del_driver(&s2dos05_i2c_driver); } module_exit(s2dos05_i2c_exit); MODULE_DESCRIPTION("SAMSUNG s2dos05 Regulator Driver"); MODULE_LICENSE("GPL");