/* * 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 #if IS_ENABLED(CONFIG_DRV_SAMSUNG_PMIC) #include #endif #if IS_ENABLED(CONFIG_REGULATOR_DEBUG_CONTROL) #include #endif #if IS_ENABLED(CONFIG_SEC_PM) #include #include #endif /* CONFIG_SEC_PM */ #if IS_ENABLED(CONFIG_SEC_ABC) #include #endif /* CONFIG_SEC_ABC */ #if IS_ENABLED(CONFIG_SEC_PM_QCOM) extern int msm_drm_register_notifier_client(struct notifier_block *nb); extern int msm_drm_unregister_notifier_client(struct notifier_block *nb); #endif 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 #if IS_ENABLED(CONFIG_SEC_PM) struct notifier_block fb_block __maybe_unused; struct delayed_work fd_work __maybe_unused; bool fd_work_init; #endif /* CONFIG_SEC_PM */ #if IS_ENABLED(CONFIG_SEC_ABC) atomic_t i2c_fail_count; #endif /* CONFIG_SEC_ABC */ }; #if IS_ENABLED(CONFIG_SEC_ABC) #define s2dos05_i2c_abc_event(arg...) \ __s2dos05_i2c_abc_event((char *)__func__, ##arg) static void __s2dos05_i2c_abc_event(char *func, struct s2dos05_data *info, int ret) { char buf[64]; char *type; int count; const int fail_threshold_cnt = 2; #if IS_ENABLED(CONFIG_SEC_FACTORY) type = "INFO"; #else type = "WARN"; #endif /* CONFIG_SEC_FACTORY */ if (ret < 0) { count = atomic_inc_return(&info->i2c_fail_count); if (count >= fail_threshold_cnt) { atomic_set(&info->i2c_fail_count, 0); snprintf(buf, sizeof(buf), "MODULE=pmic@%s=%s_fail", type, func); sec_abc_send_event(buf); } } else { atomic_set(&info->i2c_fail_count, 0); } } static void s2dos05_irq_abc_event(const char *irq_desc) { char buf[64]; char *type; #if IS_ENABLED(CONFIG_SEC_FACTORY) type = "WARN"; #else type = "WARN"; /* Diamond: black screen issue in user binary */ #endif /* CONFIG_SEC_FACTORY */ snprintf(buf, sizeof(buf), "MODULE=pmic@%s=s2dos05_%s", type, irq_desc); sec_abc_send_event(buf); } #else #define s2dos05_i2c_abc_event(arg...) do {} while (0) #define s2dos05_irq_abc_event(arg...) do {} while (0) #endif /* CONFIG_SEC_ABC */ 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); s2dos05_i2c_abc_event(info, ret); 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); s2dos05_i2c_abc_event(info, ret); 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); s2dos05_i2c_abc_event(info, ret); 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); s2dos05_i2c_abc_event(info, ret); 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); s2dos05_i2c_abc_event(info, ret); 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); s2dos05_i2c_abc_event(info, ret); 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; } #if IS_ENABLED(CONFIG_SEC_PM) static int s2m_ssd_convert_uA_to_reg_val(bool enable, int min_uA, int max_uA, u8 *val, u8 *mask) { u8 sel = 0; if (enable) { while (2000 * (sel + 1) < min_uA) sel++; if (2000 * (sel + 1) > max_uA) return -EINVAL; } *val = (!enable << 3) | (sel << 5); *mask = S2DOS05_ELVSS_SSD_EN_MASK | S2DOS05_ELVSS_SEL_SSD_MASK; return 0; } static int s2m_set_elvss_ssd_current_limit(struct regulator_dev *rdev, int min_uA, int max_uA) { struct s2dos05_data *info = rdev_get_drvdata(rdev); struct i2c_client *i2c = info->iodev->i2c; int ret; bool enable; u8 val = 0, mask = 0; enable = min_uA || max_uA; ret = s2m_ssd_convert_uA_to_reg_val(enable, min_uA, max_uA, &val, &mask); if (ret < 0) return ret; ret = s2dos05_update_reg(i2c, S2DOS05_REG_SSD_TSD, val, mask); return ret; } static int s2m_get_elvss_ssd_current_limit(struct regulator_dev *rdev) { struct s2dos05_data *info = rdev_get_drvdata(rdev); struct i2c_client *i2c = info->iodev->i2c; int ret; bool enable; u8 val; ret = s2dos05_read_reg(i2c, S2DOS05_REG_SSD_TSD, &val); if (ret < 0) return ret; enable = !(val & S2DOS05_ELVSS_SSD_EN_MASK); if (!enable) return 0; ret = (val & S2DOS05_ELVSS_SEL_SSD_MASK) >> 5; return (ret + 1) * 2000; } #if IS_ENABLED(CONFIG_ARCH_QCOM) static int s2m_elvss_fd_is_enabled(struct regulator_dev *rdev) { /* Always return false due to timing issue */ return 0; } #else static int s2m_elvss_fd_is_enabled(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, S2DOS05_REG_UVLO_FD, &val); if (ret < 0) { /* If failed to read FD status, suppose it is not enabled */ pr_info("%s: fail to read i2c address\n", __func__); return 0; } return !(val & 0x1); } #endif #define DEFAULT_ENABLE_FD_DELAY_MS 500 static int s2m_elvss_fd_enable(struct regulator_dev *rdev) { int ret = 0; struct s2dos05_data *info = rdev_get_drvdata(rdev); unsigned int delay = info->iodev->pdata->enable_fd_delay_ms; if (delay) delay = msecs_to_jiffies(delay); /* To guarantee fd_work is initialized */ if (info->fd_work_init) { ret = schedule_delayed_work(&info->fd_work, delay); if(!ret) pr_info("%s: schedule_delayed_work error!\n", __func__); } return ret; } static int s2m_elvss_fd_disable(struct regulator_dev *rdev) { struct s2dos05_data *info = rdev_get_drvdata(rdev); if (info->fd_work_init) cancel_delayed_work_sync(&info->fd_work); return 0; } #endif /* CONFIG_SEC_PM */ 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, }; #if IS_ENABLED(CONFIG_SEC_PM) static struct regulator_ops s2dos05_elvss_ssd_ops = { .set_current_limit = s2m_set_elvss_ssd_current_limit, .get_current_limit = s2m_get_elvss_ssd_current_limit, }; static struct regulator_ops s2dos05_elvss_fd_ops = { .is_enabled = s2m_elvss_fd_is_enabled, .enable = s2m_elvss_fd_enable, .disable = s2m_elvss_fd_disable, }; #endif /* CONFIG_SEC_PM */ #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 \ } #if IS_ENABLED(CONFIG_SEC_PM) #define ELVSS_DESC(_name, _id) { \ .name = _name, \ .id = _id, \ .ops = &s2dos05_elvss_ssd_ops, \ .type = REGULATOR_CURRENT, \ .owner = THIS_MODULE, \ } #define ELVSS_FD_DESC(_name, _id) { \ .name = _name, \ .id = _id, \ .ops = &s2dos05_elvss_fd_ops, \ .type = REGULATOR_CURRENT, \ .owner = THIS_MODULE, \ } #endif /* CONFIG_SEC_PM */ 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)), #if IS_ENABLED(CONFIG_SEC_PM) ELVSS_DESC("s2dos05-elvss-ssd", S2DOS05_ELVSS_SSD), ELVSS_FD_DESC("s2dos05-avdd-elvdd-elvss-fd", S2DOS05_ELVSS_FD), #endif /* CONFIG_SEC_PM */ }; #if IS_ENABLED(CONFIG_SEC_PM) static void s2dos05_irq_notifier_call_chain(struct s2dos05_data *s2dos05, u8 reg_val) { int i; int data = reg_val; for (i = 0; i < s2dos05->num_regulators; i++) regulator_notifier_call_chain(s2dos05->rdev[i], REGULATOR_EVENT_FAIL, (void *)&data); } #endif /* CONFIG_SEC_PM */ static irqreturn_t s2dos05_irq_thread(int irq, void *irq_data) { struct s2dos05_data *s2dos05 = irq_data; u8 val = 0; #if IS_ENABLED(CONFIG_SEC_PM) u8 scp_val[2] = { 0, }; const char *irq_bit[] = { "ocd", "uvlo", "scp", "ssd", "tsd", "pwrmt" }; char irq_name[32]; ssize_t ret = 0; unsigned long bit, tmp; #endif /* CONFIG_SEC_PM */ s2dos05_read_reg(s2dos05->iodev->i2c, S2DOS05_REG_IRQ, &val); pr_info("%s:irq(%d) S2DOS05_REG_IRQ : 0x%02hhx\n", __func__, irq, val); #if IS_ENABLED(CONFIG_SEC_PM) tmp = val; for_each_set_bit(bit, &tmp, ARRAY_SIZE(irq_bit)) { ret += sprintf(irq_name + ret, " %s", irq_bit[bit]); s2dos05_irq_abc_event(irq_bit[bit]); } pr_info("%s: irq:%s\n", __func__, irq_name); /* Show which regulator's SCP occurs */ if (0x04 & val) { if (s2dos05->iodev->is_sm3080) { /* SM3080 */ s2dos05_read_reg(s2dos05->iodev->i2c, INT_STATUS1, &scp_val[0]); pr_info("%s:INT_STATUS1(0x%02hhx)\n", __func__, scp_val[0]); } else { /* S2DOS05 */ s2dos05_read_reg(s2dos05->iodev->i2c, FAULT_STATUS1, &scp_val[0]); s2dos05_read_reg(s2dos05->iodev->i2c, FAULT_STATUS2, &scp_val[1]); pr_info("%s:FAULT_STATUS1(0x%02hhx), FAULT_STATUS2(0x%02hhx)\n", __func__, scp_val[0], scp_val[1]); } } #endif /* CONFIG_SEC_PM */ #if IS_ENABLED(CONFIG_SEC_PM) s2dos05_irq_notifier_call_chain(s2dos05, val); #endif /* CONFIG_SEC_PM */ 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"); #if IS_ENABLED(CONFIG_SEC_PM) if (!of_property_read_string(pmic_np, "sec_disp_pmic_name", &pdata->sec_disp_pmic_name)) dev_info(dev, "sec_disp_pmic_name: %s\n", pdata->sec_disp_pmic_name); #endif /* CONFIG_SEC_PM */ 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; #if IS_ENABLED(CONFIG_SEC_PM) pdata->ocl_elvss = -1; ret = of_property_read_u32(pmic_np, "ocl_elvss", &val); if (!ret) { pdata->ocl_elvss = val; dev_info(dev, "get ocl elvss value: %d\n", pdata->ocl_elvss); } pdata->enable_fd_delay_ms = DEFAULT_ENABLE_FD_DELAY_MS; ret = of_property_read_u32(pmic_np, "enable_fd_delay_ms", &val); if (!ret) { pdata->enable_fd_delay_ms = val; dev_info(dev, "enable_fd_delay_ms: %u\n", pdata->enable_fd_delay_ms); } #endif 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 #if IS_ENABLED(CONFIG_SEC_PM) static ssize_t enable_fd_show(struct device *dev, struct device_attribute *attr, char *buf) { struct s2dos05_data *info = dev_get_drvdata(dev); struct i2c_client *i2c = info->iodev->i2c; u8 uvlo_fd; bool enabled; s2dos05_read_reg(i2c, S2DOS05_REG_UVLO_FD, &uvlo_fd); dev_info(&i2c->dev, "%s: uvlo_fd(0x%02X)\n", __func__, uvlo_fd); enabled = !(uvlo_fd & 1); return sprintf(buf, "%s\n", enabled ? "enabled" : "disabled"); } static ssize_t enable_fd_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct s2dos05_data *info = dev_get_drvdata(dev); struct i2c_client *i2c = info->iodev->i2c; int ret; bool enable; u8 uvlo_fd; ret = strtobool(buf, &enable); if (ret) return ret; dev_info(&i2c->dev, "%s: enable(%d)\n", __func__, enable); uvlo_fd = !enable; ret = s2dos05_update_reg(i2c, S2DOS05_REG_UVLO_FD, uvlo_fd, 1); if (ret < 0) { dev_err(&i2c->dev, "%s: Failed to update FD(%d)\n", __func__, ret); return ret; } return count; } static DEVICE_ATTR(enable_fd, 0664, enable_fd_show, enable_fd_store); static void __maybe_unused handle_fd_work(struct work_struct *work) { struct s2dos05_data *s2dos05 = container_of(to_delayed_work(work), struct s2dos05_data, fd_work); struct i2c_client *i2c = s2dos05->iodev->i2c; u8 uvlo_fd = 0; int ret; dev_info(&i2c->dev, "%s: Enable FD\n", __func__); ret = s2dos05_update_reg(i2c, S2DOS05_REG_UVLO_FD, 0, 1); if (ret < 0) dev_err(&i2c->dev, "%s: Failed to enable FD(%d)\n", __func__, ret); s2dos05_read_reg(i2c, S2DOS05_REG_UVLO_FD, &uvlo_fd); dev_info(&i2c->dev, "%s: uvlo_fd(0x%02X)\n", __func__, uvlo_fd); } static int __maybe_unused fb_state_change(struct notifier_block *nb, unsigned long val, void *data) { struct s2dos05_data *s2dos05 = container_of(nb, struct s2dos05_data, fb_block); #if !IS_ENABLED(CONFIG_SEC_PM_QCOM) struct i2c_client *i2c = s2dos05->iodev->i2c; struct fb_event *evdata = data; struct fb_info *info = evdata->info; int ret; #endif unsigned int blank; if (val != FB_EVENT_BLANK) return 0; #if IS_ENABLED(CONFIG_SEC_PM_QCOM) blank = *(int *)data; #else /* * If FBNODE is not zero, it is not primary display(LCD) * and don't need to process these scheduling. */ if (info->node) return NOTIFY_OK; blank = *(int *)evdata->data; #endif if (blank == FB_BLANK_UNBLANK) { #if IS_ENABLED(CONFIG_SEC_PM_QCOM) schedule_delayed_work(&s2dos05->fd_work, msecs_to_jiffies(500)); #else dev_info(&i2c->dev, "%s: Enable FD\n", __func__); ret = s2dos05_update_reg(i2c, S2DOS05_REG_UVLO_FD, 0, 1); if (ret < 0) dev_err(&i2c->dev, "%s: Failed to enable FD(%d)\n", __func__, ret); #endif } #if IS_ENABLED(CONFIG_SEC_PM_QCOM) else { cancel_delayed_work_sync(&s2dos05->fd_work); } #endif return NOTIFY_OK; } #if IS_ENABLED(CONFIG_SEC_FACTORY) #define VALID_REG S2DOS05_REG_EN /* Register address for validation */ #define VALID_MASK 0xE0 /* NA(reserved) bit */ static ssize_t validation_show(struct device *dev, struct device_attribute *attr, char *buf) { struct s2dos05_data *s2dos05 = dev_get_drvdata(dev); struct i2c_client *i2c = s2dos05->iodev->i2c; int ret; bool result = false; u8 val; ret = s2dos05_read_reg(i2c, VALID_REG, &val); if (ret < 0) { dev_err(dev, "%s: fail to read reg\n", __func__); goto out; } dev_info(dev, "%s: initial state: reg(0x%02X) data(0x%02X)\n", __func__, VALID_REG, val); ret = s2dos05_update_reg(i2c, VALID_REG, VALID_MASK, VALID_MASK); if (ret < 0) { dev_err(dev, "%s: fail to update reg\n", __func__); goto out; } ret = s2dos05_read_reg(i2c, VALID_REG, &val); if (ret < 0) { dev_err(dev, "%s: fail to read reg\n", __func__); goto out; } dev_info(dev, "%s: updated state: reg(0x%02x) data(0x%02x)\n", __func__, VALID_REG, val); result = (val & VALID_MASK) == VALID_MASK; /* No need change to init value(0x00), but, do it */ s2dos05_update_reg(i2c, VALID_REG, 0x00, VALID_MASK); out: dev_info(dev, "%s: result: %s\n", __func__, result ? "ok" : "not ok"); return sprintf(buf, "%d\n", result); } static DEVICE_ATTR(validation, 0444, validation_show, NULL); /* for LDO burnt: enable/disable all regulator, support only for sm3080 due to hidden register */ #define NUM_REG 7 /* number of regulator to control */ struct power_sequence { int regulator; int delay; /* delay after regulator control */ }; static ssize_t enable_pwr_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct s2dos05_data *info = dev_get_drvdata(dev); struct i2c_client *i2c = info->iodev->i2c; u8 reg_status, ctrl; u8 val, mask; int i; bool enable; int ret; /* { regulator - delay } sequence */ struct power_sequence en_order[NUM_REG] = { { S2DOS05_LDO1, 0 }, { S2DOS05_LDO4, 900 }, { SM3080_AVDD, 100 }, { SM3080_ELVDD, 10 }, { SM3080_ELVSS, 1000 }, { S2DOS05_LDO2, 0 }, { S2DOS05_LDO3, 0 } }; struct power_sequence dis_order[NUM_REG] = { { S2DOS05_LDO3, 5 }, { S2DOS05_LDO2, 450 }, { SM3080_ELVDD, 0 }, { SM3080_ELVSS, 50 }, { SM3080_AVDD, 50 }, { S2DOS05_LDO4, 50 }, { S2DOS05_LDO1, 10 } }; struct power_sequence *order; /* be selected by enable */ ret = strtobool(buf, &enable); if (ret) return ret; s2dos05_read_reg(i2c, S2DOS05_REG_STAT, ®_status); s2dos05_read_reg(i2c, S2DOS05_REG_EN, &ctrl); dev_info(&i2c->dev, "++%s: en(%d), status(0x%02x), ctrl(0x%02x)\n", __func__, enable, reg_status, ctrl); order = enable ? en_order : dis_order; for (i = 0; i < NUM_REG; i++) { val = enable << order[i].regulator; mask = 1 << order[i].regulator; ret = s2dos05_update_reg(i2c, S2DOS05_REG_EN, val, mask); msleep(order[i].delay); } /* enable fd because of el power on */ if (enable) ret = s2dos05_update_reg(i2c, S2DOS05_REG_UVLO_FD, 0, 1); s2dos05_read_reg(i2c, S2DOS05_REG_STAT, ®_status); s2dos05_read_reg(i2c, S2DOS05_REG_EN, &ctrl); dev_info(&i2c->dev, "--%s: en(%d), status(0x%02x), ctrl(0x%02x)\n", __func__, enable, reg_status, ctrl); return count; } static ssize_t enable_pwr_show(struct device *dev, struct device_attribute *attr, char *buf) { struct s2dos05_data *s2dos05 = dev_get_drvdata(dev); struct i2c_client *i2c = s2dos05->iodev->i2c; u8 reg_status, ctrl; s2dos05_read_reg(i2c, S2DOS05_REG_STAT, ®_status); s2dos05_read_reg(i2c, S2DOS05_REG_EN, &ctrl); dev_info(&i2c->dev, "%s: status(0x%02x), ctrl(0x%02x)\n", __func__, reg_status, ctrl); return sprintf(buf, "0x%02x\n0x%02x\n", reg_status, ctrl); } static DEVICE_ATTR(enable_pwr, 0664, enable_pwr_show, enable_pwr_store); #endif /* CONFIG_SEC_FACTORY */ #if IS_ENABLED(CONFIG_SEC_PM) && IS_ENABLED(CONFIG_SEC_PM_QCOM) static void sec_set_fd(struct s2dos05_data *info) { info->fb_block.notifier_call = fb_state_change; msm_drm_register_notifier_client(&info->fb_block); INIT_DELAYED_WORK(&info->fd_work, handle_fd_work); info->fd_work_init = false; } #elif IS_ENABLED(CONFIG_SEC_PM) && IS_ENABLED(CONFIG_REGULATOR_S2DOS05_ELVSS_FD) static void sec_set_fd(struct s2dos05_data *info) { INIT_DELAYED_WORK(&info->fd_work, handle_fd_work); info->fd_work_init = true; } #elif IS_ENABLED(CONFIG_SEC_PM) static void sec_set_fd(struct s2dos05_data *info) { info->fb_block.notifier_call = fb_state_change; fb_register_client(&info->fb_block); info->fd_work_init = false; } #else static void sec_set_fd(struct s2dos05_data *info) { info->fd_work_init = false; } #endif static int s2dos05_sec_pm_init(struct s2dos05_data *info) { struct s2dos05_dev *iodev = info->iodev; struct device *dev = &iodev->i2c->dev; const char *sec_disp_pmic_name = iodev->pdata->sec_disp_pmic_name; int ret = 0; if (sec_disp_pmic_name) iodev->sec_disp_pmic_dev = sec_device_create(info, sec_disp_pmic_name); else iodev->sec_disp_pmic_dev = sec_device_create(info, "disp_pmic"); if (unlikely(IS_ERR(iodev->sec_disp_pmic_dev))) { ret = PTR_ERR(iodev->sec_disp_pmic_dev); dev_err(dev, "%s: Failed to create disp_pmic(%d)\n", __func__, ret); return ret; } dev_info(dev, "%s: Enable FD\n", __func__); ret = s2dos05_update_reg(iodev->i2c, S2DOS05_REG_UVLO_FD, 0, 1); if (ret < 0) { dev_err(dev, "%s: Failed to enable FD(%d)\n", __func__, ret); goto remove_sec_disp_pmic_dev; } /* To separate FD operation */ sec_set_fd(info); ret = device_create_file(iodev->sec_disp_pmic_dev, &dev_attr_enable_fd); if (ret) { dev_err(dev, "%s: Failed to create enable_fd(%d)\n", __func__, ret); goto remove_sec_disp_pmic_dev; } #if IS_ENABLED(CONFIG_SEC_FACTORY) ret = device_create_file(iodev->sec_disp_pmic_dev, &dev_attr_validation); if (ret) { pr_err("s2dos05_sysfs: failed to create validation file, %s\n", dev_attr_validation.attr.name); goto remove_sec_disp_enable_fd; } if (iodev->is_sm3080) { ret = device_create_file(iodev->sec_disp_pmic_dev, &dev_attr_enable_pwr); if (ret) { pr_err("s2dos05_sysfs: failed to create enable_pwr file, %s\n", dev_attr_enable_pwr.attr.name); goto remove_sec_disp_validation; } } #endif /* CONFIG_SEC_FACTORY */ return 0; #if IS_ENABLED(CONFIG_SEC_FACTORY) remove_sec_disp_validation: device_remove_file(info->iodev->sec_disp_pmic_dev, &dev_attr_validation); remove_sec_disp_enable_fd: device_remove_file(info->iodev->sec_disp_pmic_dev, &dev_attr_enable_fd); #endif /* CONFIG_SEC_FACTORY */ remove_sec_disp_pmic_dev: sec_device_destroy(iodev->sec_disp_pmic_dev->devt); return ret; } static void s2dos05_sec_pm_deinit(struct s2dos05_data *info) { device_remove_file(info->iodev->sec_disp_pmic_dev, &dev_attr_enable_fd); #if IS_ENABLED(CONFIG_SEC_PM_QCOM) msm_drm_unregister_notifier_client(&info->fb_block); #endif #if IS_ENABLED(CONFIG_SEC_FACTORY) device_remove_file(info->iodev->sec_disp_pmic_dev, &dev_attr_validation); device_remove_file(info->iodev->sec_disp_pmic_dev, &dev_attr_enable_pwr); #endif /* CONFIG_SEC_FACTORY */ sec_device_destroy(info->iodev->sec_disp_pmic_dev->devt); } #endif /* CONFIG_SEC_PM */ static int __s2dos05_pmic_probe(struct i2c_client *i2c) { 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; } #if IS_ENABLED(CONFIG_SEC_ABC) atomic_set(&s2dos05->i2c_fail_count, 0); #endif /* CONFIG_SEC_ABC */ 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; } #if IS_ENABLED(CONFIG_REGULATOR_DEBUG_CONTROL) ret = devm_regulator_debug_register(&i2c->dev, s2dos05->rdev[i]); if (ret) dev_err(&i2c->dev, "failed to register debug regulator for %lu, rc=%d\n", i, ret); #endif } #if IS_ENABLED(CONFIG_SEC_PM) ret = s2dos05_read_reg(i2c, S2DOS05_REG_DEVICE_ID_PGM, &val); if (ret < 0) { dev_err(&i2c->dev, "Failed to read DEVICE ID address\n"); goto err_s2dos05_data; } if (val & (1 << 7)) { iodev->is_sm3080 = true; dev_info(&i2c->dev, "SM3080 DEVICE ID: 0x%02X\n", val); } /* set OCL_ELVSS */ if (pdata->ocl_elvss > -1) { s2dos05_update_reg(i2c, S2DOS05_REG_OCL, pdata->ocl_elvss, S2DOS05_OCL_ELVSS_MASK); pr_info("%s: set ocl elvss: %d\n", __func__, pdata->ocl_elvss); } ret = s2dos05_sec_pm_init(s2dos05); if (ret < 0) goto err_s2dos05_data; #endif /* CONFIG_SEC_PM */ 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); #if IS_ENABLED(CONFIG_SEC_PM) s2dos05_sec_pm_deinit(info); #endif /* CONFIG_SEC_PM */ return 0; } #if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 6, 0) static int s2dos05_pmic_probe(struct i2c_client *i2c) { return __s2dos05_pmic_probe(i2c); } #else static int s2dos05_pmic_probe(struct i2c_client *i2c, const struct i2c_device_id *dev_id) { return __s2dos05_pmic_probe(i2c); } #endif #if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0) static void s2dos05_pmic_remove(struct i2c_client *i2c) { __s2dos05_pmic_remove(i2c); } #else static int s2dos05_pmic_remove(struct i2c_client *i2c) { return __s2dos05_pmic_remove(i2c); } #endif #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) { #if IS_ENABLED(CONFIG_SEC_PM) int ret; ret = s2dos05_update_reg(s2dos05->i2c, S2DOS05_REG_PWRMT_CTRL2, s2dos05->adc_en_val & 0x80, ADC_EN_MASK); if (ret < 0) pr_err("%s: Failed to update_reg: %d\n", __func__, ret); #else s2dos05_update_reg(s2dos05->i2c, S2DOS05_REG_PWRMT_CTRL2, s2dos05->adc_en_val & 0x80, ADC_EN_MASK); #endif /* CONFIG_SEC_PM */ } 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");