| /* Copyright (c) 2016-2017 The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * 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. |
| */ |
| |
| #define pr_fmt(fmt) "SMB1355: %s: " fmt, __func__ |
| |
| #include <linux/device.h> |
| #include <linux/regmap.h> |
| #include <linux/interrupt.h> |
| #include <linux/module.h> |
| #include <linux/iio/consumer.h> |
| #include <linux/platform_device.h> |
| #include <linux/qpnp/qpnp-revid.h> |
| #include <linux/of.h> |
| #include <linux/of_device.h> |
| #include <linux/of_irq.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/power_supply.h> |
| #include <linux/pmic-voter.h> |
| |
| #define SMB1355_DEFAULT_FCC_UA 1000000 |
| |
| /* SMB1355 registers, different than mentioned in smb-reg.h */ |
| |
| #define CHGR_BASE 0x1000 |
| #define BATIF_BASE 0x1200 |
| #define USBIN_BASE 0x1300 |
| #define MISC_BASE 0x1600 |
| |
| #define BATTERY_STATUS_2_REG (CHGR_BASE + 0x0B) |
| #define DISABLE_CHARGING_BIT BIT(3) |
| |
| #define BATTERY_STATUS_3_REG (CHGR_BASE + 0x0C) |
| #define BATT_GT_PRE_TO_FAST_BIT BIT(4) |
| #define ENABLE_CHARGING_BIT BIT(3) |
| |
| #define CHGR_CFG2_REG (CHGR_BASE + 0x51) |
| #define CHG_EN_SRC_BIT BIT(7) |
| #define CHG_EN_POLARITY_BIT BIT(6) |
| |
| #define CFG_REG (CHGR_BASE + 0x53) |
| #define CHG_OPTION_PIN_TRIM_BIT BIT(7) |
| #define BATN_SNS_CFG_BIT BIT(4) |
| #define CFG_TAPER_DIS_AFVC_BIT BIT(3) |
| #define BATFET_SHUTDOWN_CFG_BIT BIT(2) |
| #define VDISCHG_EN_CFG_BIT BIT(1) |
| #define VCHG_EN_CFG_BIT BIT(0) |
| |
| #define FAST_CHARGE_CURRENT_CFG_REG (CHGR_BASE + 0x61) |
| #define FAST_CHARGE_CURRENT_SETTING_MASK GENMASK(7, 0) |
| |
| #define CHGR_BATTOV_CFG_REG (CHGR_BASE + 0x70) |
| #define BATTOV_SETTING_MASK GENMASK(7, 0) |
| |
| #define POWER_MODE_HICCUP_CFG (BATIF_BASE + 0x72) |
| #define MAX_HICCUP_DUETO_BATDIS_MASK GENMASK(5, 2) |
| #define HICCUP_TIMEOUT_CFG_MASK GENMASK(1, 0) |
| |
| #define TEMP_COMP_STATUS_REG (MISC_BASE + 0x07) |
| #define SKIN_TEMP_RST_HOT_BIT BIT(6) |
| #define SKIN_TEMP_UB_HOT_BIT BIT(5) |
| #define SKIN_TEMP_LB_HOT_BIT BIT(4) |
| #define DIE_TEMP_TSD_HOT_BIT BIT(3) |
| #define DIE_TEMP_RST_HOT_BIT BIT(2) |
| #define DIE_TEMP_UB_HOT_BIT BIT(1) |
| #define DIE_TEMP_LB_HOT_BIT BIT(0) |
| |
| #define BARK_BITE_WDOG_PET_REG (MISC_BASE + 0x43) |
| #define BARK_BITE_WDOG_PET_BIT BIT(0) |
| |
| #define WD_CFG_REG (MISC_BASE + 0x51) |
| #define WATCHDOG_TRIGGER_AFP_EN_BIT BIT(7) |
| #define BARK_WDOG_INT_EN_BIT BIT(6) |
| #define BITE_WDOG_INT_EN_BIT BIT(5) |
| #define WDOG_IRQ_SFT_BIT BIT(2) |
| #define WDOG_TIMER_EN_ON_PLUGIN_BIT BIT(1) |
| #define WDOG_TIMER_EN_BIT BIT(0) |
| |
| #define SNARL_BARK_BITE_WD_CFG_REG (MISC_BASE + 0x53) |
| #define BITE_WDOG_DISABLE_CHARGING_CFG_BIT BIT(7) |
| #define SNARL_WDOG_TIMEOUT_MASK GENMASK(6, 4) |
| #define BARK_WDOG_TIMEOUT_MASK GENMASK(3, 2) |
| #define BITE_WDOG_TIMEOUT_MASK GENMASK(1, 0) |
| |
| struct smb_chg_param { |
| const char *name; |
| u16 reg; |
| int min_u; |
| int max_u; |
| int step_u; |
| }; |
| |
| struct smb_params { |
| struct smb_chg_param fcc; |
| struct smb_chg_param ov; |
| }; |
| |
| static struct smb_params v1_params = { |
| .fcc = { |
| .name = "fast charge current", |
| .reg = FAST_CHARGE_CURRENT_CFG_REG, |
| .min_u = 0, |
| .max_u = 6000000, |
| .step_u = 25000, |
| }, |
| .ov = { |
| .name = "battery over voltage", |
| .reg = CHGR_BATTOV_CFG_REG, |
| .min_u = 2450000, |
| .max_u = 5000000, |
| .step_u = 10000, |
| }, |
| }; |
| |
| struct smb_irq_info { |
| const char *name; |
| const irq_handler_t handler; |
| const bool wake; |
| int irq; |
| }; |
| |
| struct smb_iio { |
| struct iio_channel *temp_chan; |
| struct iio_channel *temp_max_chan; |
| }; |
| |
| struct smb1355 { |
| struct device *dev; |
| char *name; |
| struct regmap *regmap; |
| |
| struct smb_params param; |
| struct smb_iio iio; |
| |
| struct mutex write_lock; |
| |
| struct power_supply *parallel_psy; |
| struct pmic_revid_data *pmic_rev_id; |
| }; |
| |
| static bool is_secure(struct smb1355 *chip, int addr) |
| { |
| /* assume everything above 0xA0 is secure */ |
| return (addr & 0xFF) >= 0xA0; |
| } |
| |
| static int smb1355_read(struct smb1355 *chip, u16 addr, u8 *val) |
| { |
| unsigned int temp; |
| int rc; |
| |
| rc = regmap_read(chip->regmap, addr, &temp); |
| if (rc >= 0) |
| *val = (u8)temp; |
| |
| return rc; |
| } |
| |
| static int smb1355_masked_write(struct smb1355 *chip, u16 addr, u8 mask, u8 val) |
| { |
| int rc; |
| |
| mutex_lock(&chip->write_lock); |
| if (is_secure(chip, addr)) { |
| rc = regmap_write(chip->regmap, (addr & 0xFF00) | 0xD0, 0xA5); |
| if (rc < 0) |
| goto unlock; |
| } |
| |
| rc = regmap_update_bits(chip->regmap, addr, mask, val); |
| |
| unlock: |
| mutex_unlock(&chip->write_lock); |
| return rc; |
| } |
| |
| static int smb1355_write(struct smb1355 *chip, u16 addr, u8 val) |
| { |
| int rc; |
| |
| mutex_lock(&chip->write_lock); |
| |
| if (is_secure(chip, addr)) { |
| rc = regmap_write(chip->regmap, (addr & ~(0xFF)) | 0xD0, 0xA5); |
| if (rc < 0) |
| goto unlock; |
| } |
| |
| rc = regmap_write(chip->regmap, addr, val); |
| |
| unlock: |
| mutex_unlock(&chip->write_lock); |
| return rc; |
| } |
| |
| static int smb1355_set_charge_param(struct smb1355 *chip, |
| struct smb_chg_param *param, int val_u) |
| { |
| int rc; |
| u8 val_raw; |
| |
| if (val_u > param->max_u || val_u < param->min_u) { |
| pr_err("%s: %d is out of range [%d, %d]\n", |
| param->name, val_u, param->min_u, param->max_u); |
| return -EINVAL; |
| } |
| |
| val_raw = (val_u - param->min_u) / param->step_u; |
| |
| rc = smb1355_write(chip, param->reg, val_raw); |
| if (rc < 0) { |
| pr_err("%s: Couldn't write 0x%02x to 0x%04x rc=%d\n", |
| param->name, val_raw, param->reg, rc); |
| return rc; |
| } |
| |
| return rc; |
| } |
| |
| static int smb1355_get_charge_param(struct smb1355 *chip, |
| struct smb_chg_param *param, int *val_u) |
| { |
| int rc; |
| u8 val_raw; |
| |
| rc = smb1355_read(chip, param->reg, &val_raw); |
| if (rc < 0) { |
| pr_err("%s: Couldn't read from 0x%04x rc=%d\n", |
| param->name, param->reg, rc); |
| return rc; |
| } |
| |
| *val_u = val_raw * param->step_u + param->min_u; |
| |
| return rc; |
| } |
| |
| static irqreturn_t smb1355_handle_chg_state_change(int irq, void *data) |
| { |
| struct smb1355 *chip = data; |
| |
| if (chip->parallel_psy) |
| power_supply_changed(chip->parallel_psy); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static irqreturn_t smb1355_handle_wdog_bark(int irq, void *data) |
| { |
| struct smb1355 *chip = data; |
| int rc; |
| |
| rc = smb1355_write(chip, BARK_BITE_WDOG_PET_REG, |
| BARK_BITE_WDOG_PET_BIT); |
| if (rc < 0) |
| pr_err("Couldn't pet the dog rc=%d\n", rc); |
| |
| return IRQ_HANDLED; |
| } |
| |
| /***************************** |
| * PARALLEL PSY REGISTRATION * |
| *****************************/ |
| |
| static enum power_supply_property smb1355_parallel_props[] = { |
| POWER_SUPPLY_PROP_CHARGE_TYPE, |
| POWER_SUPPLY_PROP_CHARGING_ENABLED, |
| POWER_SUPPLY_PROP_PIN_ENABLED, |
| POWER_SUPPLY_PROP_INPUT_SUSPEND, |
| POWER_SUPPLY_PROP_CHARGER_TEMP, |
| POWER_SUPPLY_PROP_CHARGER_TEMP_MAX, |
| POWER_SUPPLY_PROP_VOLTAGE_MAX, |
| POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX, |
| POWER_SUPPLY_PROP_MODEL_NAME, |
| POWER_SUPPLY_PROP_PARALLEL_MODE, |
| POWER_SUPPLY_PROP_CONNECTOR_HEALTH, |
| }; |
| |
| static int smb1355_get_prop_batt_charge_type(struct smb1355 *chip, |
| union power_supply_propval *val) |
| { |
| int rc; |
| u8 stat; |
| |
| rc = smb1355_read(chip, BATTERY_STATUS_3_REG, &stat); |
| if (rc < 0) { |
| pr_err("Couldn't read SMB1355_BATTERY_STATUS_3 rc=%d\n", rc); |
| return rc; |
| } |
| |
| if (stat & ENABLE_CHARGING_BIT) { |
| if (stat & BATT_GT_PRE_TO_FAST_BIT) |
| val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST; |
| else |
| val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; |
| } else { |
| val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE; |
| } |
| |
| return rc; |
| } |
| |
| static int smb1355_get_parallel_charging(struct smb1355 *chip, int *disabled) |
| { |
| int rc; |
| u8 cfg2; |
| |
| rc = smb1355_read(chip, CHGR_CFG2_REG, &cfg2); |
| if (rc < 0) { |
| pr_err("Couldn't read en_cmg_reg rc=%d\n", rc); |
| return rc; |
| } |
| |
| if (cfg2 & CHG_EN_SRC_BIT) |
| *disabled = 0; |
| else |
| *disabled = 1; |
| |
| return 0; |
| } |
| |
| static int smb1355_get_prop_connector_health(struct smb1355 *chip) |
| { |
| u8 temp; |
| int rc; |
| |
| rc = smb1355_read(chip, TEMP_COMP_STATUS_REG, &temp); |
| if (rc < 0) { |
| pr_err("Couldn't read comp stat reg rc = %d\n", rc); |
| return POWER_SUPPLY_HEALTH_UNKNOWN; |
| } |
| |
| if (temp & SKIN_TEMP_RST_HOT_BIT) |
| return POWER_SUPPLY_HEALTH_OVERHEAT; |
| |
| if (temp & SKIN_TEMP_UB_HOT_BIT) |
| return POWER_SUPPLY_HEALTH_HOT; |
| |
| if (temp & SKIN_TEMP_LB_HOT_BIT) |
| return POWER_SUPPLY_HEALTH_WARM; |
| |
| return POWER_SUPPLY_HEALTH_COOL; |
| } |
| |
| |
| static int smb1355_get_prop_charger_temp(struct smb1355 *chip, |
| union power_supply_propval *val) |
| { |
| int rc; |
| |
| if (!chip->iio.temp_chan || |
| PTR_ERR(chip->iio.temp_chan) == -EPROBE_DEFER) |
| chip->iio.temp_chan = devm_iio_channel_get(chip->dev, |
| "charger_temp"); |
| |
| if (IS_ERR(chip->iio.temp_chan)) |
| return PTR_ERR(chip->iio.temp_chan); |
| |
| rc = iio_read_channel_processed(chip->iio.temp_chan, &val->intval); |
| val->intval /= 100; |
| return rc; |
| } |
| |
| static int smb1355_get_prop_charger_temp_max(struct smb1355 *chip, |
| union power_supply_propval *val) |
| { |
| int rc; |
| |
| if (!chip->iio.temp_max_chan || |
| PTR_ERR(chip->iio.temp_max_chan) == -EPROBE_DEFER) |
| chip->iio.temp_max_chan = devm_iio_channel_get(chip->dev, |
| "charger_temp_max"); |
| if (IS_ERR(chip->iio.temp_max_chan)) |
| return PTR_ERR(chip->iio.temp_max_chan); |
| |
| rc = iio_read_channel_processed(chip->iio.temp_max_chan, &val->intval); |
| val->intval /= 100; |
| return rc; |
| } |
| |
| static int smb1355_parallel_get_prop(struct power_supply *psy, |
| enum power_supply_property prop, |
| union power_supply_propval *val) |
| { |
| struct smb1355 *chip = power_supply_get_drvdata(psy); |
| u8 stat; |
| int rc = 0; |
| |
| switch (prop) { |
| case POWER_SUPPLY_PROP_CHARGE_TYPE: |
| rc = smb1355_get_prop_batt_charge_type(chip, val); |
| break; |
| case POWER_SUPPLY_PROP_CHARGING_ENABLED: |
| rc = smb1355_read(chip, BATTERY_STATUS_3_REG, &stat); |
| if (rc >= 0) |
| val->intval = (bool)(stat & ENABLE_CHARGING_BIT); |
| break; |
| case POWER_SUPPLY_PROP_PIN_ENABLED: |
| rc = smb1355_read(chip, BATTERY_STATUS_2_REG, &stat); |
| if (rc >= 0) |
| val->intval = !(stat & DISABLE_CHARGING_BIT); |
| break; |
| case POWER_SUPPLY_PROP_CHARGER_TEMP: |
| rc = smb1355_get_prop_charger_temp(chip, val); |
| break; |
| case POWER_SUPPLY_PROP_CHARGER_TEMP_MAX: |
| rc = smb1355_get_prop_charger_temp_max(chip, val); |
| break; |
| case POWER_SUPPLY_PROP_INPUT_SUSPEND: |
| rc = smb1355_get_parallel_charging(chip, &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_VOLTAGE_MAX: |
| rc = smb1355_get_charge_param(chip, &chip->param.ov, |
| &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: |
| rc = smb1355_get_charge_param(chip, &chip->param.fcc, |
| &val->intval); |
| break; |
| case POWER_SUPPLY_PROP_MODEL_NAME: |
| val->strval = chip->name; |
| break; |
| case POWER_SUPPLY_PROP_PARALLEL_MODE: |
| val->intval = POWER_SUPPLY_PL_USBMID_USBMID; |
| break; |
| case POWER_SUPPLY_PROP_CONNECTOR_HEALTH: |
| val->intval = smb1355_get_prop_connector_health(chip); |
| break; |
| default: |
| pr_err_ratelimited("parallel psy get prop %d not supported\n", |
| prop); |
| return -EINVAL; |
| } |
| |
| if (rc < 0) { |
| pr_debug("Couldn't get prop %d rc = %d\n", prop, rc); |
| return -ENODATA; |
| } |
| |
| return rc; |
| } |
| |
| static int smb1355_set_parallel_charging(struct smb1355 *chip, bool disable) |
| { |
| int rc; |
| |
| rc = smb1355_masked_write(chip, WD_CFG_REG, WDOG_TIMER_EN_BIT, |
| disable ? 0 : WDOG_TIMER_EN_BIT); |
| if (rc < 0) { |
| pr_err("Couldn't %s watchdog rc=%d\n", |
| disable ? "disable" : "enable", rc); |
| disable = true; |
| } |
| |
| /* |
| * Configure charge enable for high polarity and |
| * When disabling charging set it to cmd register control(cmd bit=0) |
| * When enabling charging set it to pin control |
| */ |
| rc = smb1355_masked_write(chip, CHGR_CFG2_REG, |
| CHG_EN_POLARITY_BIT | CHG_EN_SRC_BIT, |
| disable ? 0 : CHG_EN_SRC_BIT); |
| if (rc < 0) { |
| pr_err("Couldn't configure charge enable source rc=%d\n", rc); |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| static int smb1355_parallel_set_prop(struct power_supply *psy, |
| enum power_supply_property prop, |
| const union power_supply_propval *val) |
| { |
| struct smb1355 *chip = power_supply_get_drvdata(psy); |
| int rc = 0; |
| |
| switch (prop) { |
| case POWER_SUPPLY_PROP_INPUT_SUSPEND: |
| rc = smb1355_set_parallel_charging(chip, (bool)val->intval); |
| break; |
| case POWER_SUPPLY_PROP_VOLTAGE_MAX: |
| rc = smb1355_set_charge_param(chip, &chip->param.ov, |
| val->intval); |
| break; |
| case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX: |
| rc = smb1355_set_charge_param(chip, &chip->param.fcc, |
| val->intval); |
| break; |
| default: |
| pr_debug("parallel power supply set prop %d not supported\n", |
| prop); |
| return -EINVAL; |
| } |
| |
| return rc; |
| } |
| |
| static int smb1355_parallel_prop_is_writeable(struct power_supply *psy, |
| enum power_supply_property prop) |
| { |
| return 0; |
| } |
| |
| static struct power_supply_desc parallel_psy_desc = { |
| .name = "parallel", |
| .type = POWER_SUPPLY_TYPE_PARALLEL, |
| .properties = smb1355_parallel_props, |
| .num_properties = ARRAY_SIZE(smb1355_parallel_props), |
| .get_property = smb1355_parallel_get_prop, |
| .set_property = smb1355_parallel_set_prop, |
| .property_is_writeable = smb1355_parallel_prop_is_writeable, |
| }; |
| |
| static int smb1355_init_parallel_psy(struct smb1355 *chip) |
| { |
| struct power_supply_config parallel_cfg = {}; |
| |
| parallel_cfg.drv_data = chip; |
| parallel_cfg.of_node = chip->dev->of_node; |
| |
| /* change to smb1355's property list */ |
| parallel_psy_desc.properties = smb1355_parallel_props; |
| parallel_psy_desc.num_properties = ARRAY_SIZE(smb1355_parallel_props); |
| chip->parallel_psy = devm_power_supply_register(chip->dev, |
| ¶llel_psy_desc, |
| ¶llel_cfg); |
| if (IS_ERR(chip->parallel_psy)) { |
| pr_err("Couldn't register parallel power supply\n"); |
| return PTR_ERR(chip->parallel_psy); |
| } |
| |
| return 0; |
| } |
| |
| /*************************** |
| * HARDWARE INITIALIZATION * |
| ***************************/ |
| |
| static int smb1355_init_hw(struct smb1355 *chip) |
| { |
| int rc; |
| |
| /* enable watchdog bark and bite interrupts, and disable the watchdog */ |
| rc = smb1355_masked_write(chip, WD_CFG_REG, WDOG_TIMER_EN_BIT |
| | WDOG_TIMER_EN_ON_PLUGIN_BIT | BITE_WDOG_INT_EN_BIT |
| | BARK_WDOG_INT_EN_BIT, |
| BITE_WDOG_INT_EN_BIT | BARK_WDOG_INT_EN_BIT); |
| if (rc < 0) { |
| pr_err("Couldn't configure the watchdog rc=%d\n", rc); |
| return rc; |
| } |
| |
| /* disable charging when watchdog bites */ |
| rc = smb1355_masked_write(chip, SNARL_BARK_BITE_WD_CFG_REG, |
| BITE_WDOG_DISABLE_CHARGING_CFG_BIT, |
| BITE_WDOG_DISABLE_CHARGING_CFG_BIT); |
| if (rc < 0) { |
| pr_err("Couldn't configure the watchdog bite rc=%d\n", rc); |
| return rc; |
| } |
| |
| /* disable parallel charging path */ |
| rc = smb1355_set_parallel_charging(chip, true); |
| if (rc < 0) { |
| pr_err("Couldn't disable parallel path rc=%d\n", rc); |
| return rc; |
| } |
| |
| /* initialize FCC to 0 */ |
| rc = smb1355_set_charge_param(chip, &chip->param.fcc, 0); |
| if (rc < 0) { |
| pr_err("Couldn't set 0 FCC rc=%d\n", rc); |
| return rc; |
| } |
| |
| /* HICCUP setting, unlimited retry with 250ms interval */ |
| rc = smb1355_masked_write(chip, POWER_MODE_HICCUP_CFG, |
| HICCUP_TIMEOUT_CFG_MASK | MAX_HICCUP_DUETO_BATDIS_MASK, |
| 0); |
| if (rc < 0) { |
| pr_err("Couldn't enable parallel current sensing rc=%d\n", |
| rc); |
| return rc; |
| } |
| |
| /* enable parallel current sensing */ |
| rc = smb1355_masked_write(chip, CFG_REG, |
| VCHG_EN_CFG_BIT, VCHG_EN_CFG_BIT); |
| if (rc < 0) { |
| pr_err("Couldn't enable parallel current sensing rc=%d\n", |
| rc); |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| /************************** |
| * INTERRUPT REGISTRATION * |
| **************************/ |
| static struct smb_irq_info smb1355_irqs[] = { |
| [0] = { |
| .name = "wdog-bark", |
| .handler = smb1355_handle_wdog_bark, |
| }, |
| [1] = { |
| .name = "chg-state-change", |
| .handler = smb1355_handle_chg_state_change, |
| .wake = true, |
| }, |
| }; |
| |
| static int smb1355_get_irq_index_byname(const char *irq_name) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(smb1355_irqs); i++) { |
| if (strcmp(smb1355_irqs[i].name, irq_name) == 0) |
| return i; |
| } |
| |
| return -ENOENT; |
| } |
| |
| static int smb1355_request_interrupt(struct smb1355 *chip, |
| struct device_node *node, |
| const char *irq_name) |
| { |
| int rc = 0, irq, irq_index; |
| |
| irq = of_irq_get_byname(node, irq_name); |
| if (irq < 0) { |
| pr_err("Couldn't get irq %s byname\n", irq_name); |
| return irq; |
| } |
| |
| irq_index = smb1355_get_irq_index_byname(irq_name); |
| if (irq_index < 0) { |
| pr_err("%s is not a defined irq\n", irq_name); |
| return irq_index; |
| } |
| |
| if (!smb1355_irqs[irq_index].handler) |
| return 0; |
| |
| rc = devm_request_threaded_irq(chip->dev, irq, NULL, |
| smb1355_irqs[irq_index].handler, |
| IRQF_ONESHOT, irq_name, chip); |
| if (rc < 0) { |
| pr_err("Couldn't request irq %d rc=%d\n", irq, rc); |
| return rc; |
| } |
| |
| if (smb1355_irqs[irq_index].wake) |
| enable_irq_wake(irq); |
| |
| return rc; |
| } |
| |
| static int smb1355_request_interrupts(struct smb1355 *chip) |
| { |
| struct device_node *node = chip->dev->of_node; |
| struct device_node *child; |
| int rc = 0; |
| const char *name; |
| struct property *prop; |
| |
| for_each_available_child_of_node(node, child) { |
| of_property_for_each_string(child, "interrupt-names", |
| prop, name) { |
| rc = smb1355_request_interrupt(chip, child, name); |
| if (rc < 0) { |
| pr_err("Couldn't request interrupt %s rc=%d\n", |
| name, rc); |
| return rc; |
| } |
| } |
| } |
| |
| return rc; |
| } |
| |
| /********* |
| * PROBE * |
| *********/ |
| static const struct of_device_id match_table[] = { |
| { |
| .compatible = "qcom,smb1355", |
| }, |
| { }, |
| }; |
| |
| static int smb1355_probe(struct platform_device *pdev) |
| { |
| struct smb1355 *chip; |
| const struct of_device_id *id; |
| int rc = 0; |
| |
| chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); |
| if (!chip) |
| return -ENOMEM; |
| |
| chip->dev = &pdev->dev; |
| chip->param = v1_params; |
| chip->name = "smb1355"; |
| mutex_init(&chip->write_lock); |
| |
| chip->regmap = dev_get_regmap(chip->dev->parent, NULL); |
| if (!chip->regmap) { |
| pr_err("parent regmap is missing\n"); |
| return -EINVAL; |
| } |
| |
| id = of_match_device(of_match_ptr(match_table), chip->dev); |
| if (!id) { |
| pr_err("Couldn't find a matching device\n"); |
| return -ENODEV; |
| } |
| |
| platform_set_drvdata(pdev, chip); |
| |
| rc = smb1355_init_hw(chip); |
| if (rc < 0) { |
| pr_err("Couldn't initialize hardware rc=%d\n", rc); |
| goto cleanup; |
| } |
| |
| rc = smb1355_init_parallel_psy(chip); |
| if (rc < 0) { |
| pr_err("Couldn't initialize parallel psy rc=%d\n", rc); |
| goto cleanup; |
| } |
| |
| rc = smb1355_request_interrupts(chip); |
| if (rc < 0) { |
| pr_err("Couldn't request interrupts rc=%d\n", rc); |
| goto cleanup; |
| } |
| |
| pr_info("%s probed successfully\n", chip->name); |
| return rc; |
| |
| cleanup: |
| platform_set_drvdata(pdev, NULL); |
| return rc; |
| } |
| |
| static int smb1355_remove(struct platform_device *pdev) |
| { |
| platform_set_drvdata(pdev, NULL); |
| return 0; |
| } |
| |
| static struct platform_driver smb1355_driver = { |
| .driver = { |
| .name = "qcom,smb1355-charger", |
| .owner = THIS_MODULE, |
| .of_match_table = match_table, |
| }, |
| .probe = smb1355_probe, |
| .remove = smb1355_remove, |
| }; |
| module_platform_driver(smb1355_driver); |
| |
| MODULE_DESCRIPTION("QPNP SMB1355 Charger Driver"); |
| MODULE_LICENSE("GPL v2"); |