/* Copyright (c) 2014, Sony Mobile Communications Inc. * * 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. * * This driver is for the multi-block Switch-Mode Battery Charger and Boost * (SMBB) hardware, found in Qualcomm PM8941 PMICs. The charger is an * integrated, single-cell lithium-ion battery charger. * * Sub-components: * - Charger core * - Buck * - DC charge-path * - USB charge-path * - Battery interface * - Boost (not implemented) * - Misc * - HF-Buck */ #include #include #include #include #include #include #include #include #include #include #define SMBB_CHG_VMAX 0x040 #define SMBB_CHG_VSAFE 0x041 #define SMBB_CHG_CFG 0x043 #define SMBB_CHG_IMAX 0x044 #define SMBB_CHG_ISAFE 0x045 #define SMBB_CHG_VIN_MIN 0x047 #define SMBB_CHG_CTRL 0x049 #define CTRL_EN BIT(7) #define SMBB_CHG_VBAT_WEAK 0x052 #define SMBB_CHG_IBAT_TERM_CHG 0x05b #define IBAT_TERM_CHG_IEOC BIT(7) #define IBAT_TERM_CHG_IEOC_BMS BIT(7) #define IBAT_TERM_CHG_IEOC_CHG 0 #define SMBB_CHG_VBAT_DET 0x05d #define SMBB_CHG_TCHG_MAX_EN 0x060 #define TCHG_MAX_EN BIT(7) #define SMBB_CHG_WDOG_TIME 0x062 #define SMBB_CHG_WDOG_EN 0x065 #define WDOG_EN BIT(7) #define SMBB_BUCK_REG_MODE 0x174 #define BUCK_REG_MODE BIT(0) #define BUCK_REG_MODE_VBAT BIT(0) #define BUCK_REG_MODE_VSYS 0 #define SMBB_BAT_PRES_STATUS 0x208 #define PRES_STATUS_BAT_PRES BIT(7) #define SMBB_BAT_TEMP_STATUS 0x209 #define TEMP_STATUS_OK BIT(7) #define TEMP_STATUS_HOT BIT(6) #define SMBB_BAT_BTC_CTRL 0x249 #define BTC_CTRL_COMP_EN BIT(7) #define BTC_CTRL_COLD_EXT BIT(1) #define BTC_CTRL_HOT_EXT_N BIT(0) #define SMBB_USB_IMAX 0x344 #define SMBB_USB_ENUM_TIMER_STOP 0x34e #define ENUM_TIMER_STOP BIT(0) #define SMBB_USB_SEC_ACCESS 0x3d0 #define SEC_ACCESS_MAGIC 0xa5 #define SMBB_USB_REV_BST 0x3ed #define REV_BST_CHG_GONE BIT(7) #define SMBB_DC_IMAX 0x444 #define SMBB_MISC_REV2 0x601 #define SMBB_MISC_BOOT_DONE 0x642 #define BOOT_DONE BIT(7) #define STATUS_USBIN_VALID BIT(0) /* USB connection is valid */ #define STATUS_DCIN_VALID BIT(1) /* DC connection is valid */ #define STATUS_BAT_HOT BIT(2) /* Battery temp 1=Hot, 0=Cold */ #define STATUS_BAT_OK BIT(3) /* Battery temp OK */ #define STATUS_BAT_PRESENT BIT(4) /* Battery is present */ #define STATUS_CHG_DONE BIT(5) /* Charge cycle is complete */ #define STATUS_CHG_TRKL BIT(6) /* Trickle charging */ #define STATUS_CHG_FAST BIT(7) /* Fast charging */ #define STATUS_CHG_GONE BIT(8) /* No charger is connected */ enum smbb_attr { ATTR_BAT_ISAFE, ATTR_BAT_IMAX, ATTR_USBIN_IMAX, ATTR_DCIN_IMAX, ATTR_BAT_VSAFE, ATTR_BAT_VMAX, ATTR_BAT_VMIN, ATTR_CHG_VDET, ATTR_VIN_MIN, _ATTR_CNT, }; struct smbb_charger { unsigned int revision; unsigned int addr; struct device *dev; bool dc_disabled; bool jeita_ext_temp; unsigned long status; struct mutex statlock; unsigned int attr[_ATTR_CNT]; struct power_supply *usb_psy; struct power_supply *dc_psy; struct power_supply *bat_psy; struct regmap *regmap; }; static int smbb_vbat_weak_fn(unsigned int index) { return 2100000 + index * 100000; } static int smbb_vin_fn(unsigned int index) { if (index > 42) return 5600000 + (index - 43) * 200000; return 3400000 + index * 50000; } static int smbb_vmax_fn(unsigned int index) { return 3240000 + index * 10000; } static int smbb_vbat_det_fn(unsigned int index) { return 3240000 + index * 20000; } static int smbb_imax_fn(unsigned int index) { if (index < 2) return 100000 + index * 50000; return index * 100000; } static int smbb_bat_imax_fn(unsigned int index) { return index * 50000; } static unsigned int smbb_hw_lookup(unsigned int val, int (*fn)(unsigned int)) { unsigned int widx; unsigned int sel; for (widx = sel = 0; (*fn)(widx) <= val; ++widx) sel = widx; return sel; } static const struct smbb_charger_attr { const char *name; unsigned int reg; unsigned int safe_reg; unsigned int max; unsigned int min; unsigned int fail_ok; int (*hw_fn)(unsigned int); } smbb_charger_attrs[] = { [ATTR_BAT_ISAFE] = { .name = "qcom,fast-charge-safe-current", .reg = SMBB_CHG_ISAFE, .max = 3000000, .min = 200000, .hw_fn = smbb_bat_imax_fn, .fail_ok = 1, }, [ATTR_BAT_IMAX] = { .name = "qcom,fast-charge-current-limit", .reg = SMBB_CHG_IMAX, .safe_reg = SMBB_CHG_ISAFE, .max = 3000000, .min = 200000, .hw_fn = smbb_bat_imax_fn, }, [ATTR_DCIN_IMAX] = { .name = "qcom,dc-current-limit", .reg = SMBB_DC_IMAX, .max = 2500000, .min = 100000, .hw_fn = smbb_imax_fn, }, [ATTR_BAT_VSAFE] = { .name = "qcom,fast-charge-safe-voltage", .reg = SMBB_CHG_VSAFE, .max = 5000000, .min = 3240000, .hw_fn = smbb_vmax_fn, .fail_ok = 1, }, [ATTR_BAT_VMAX] = { .name = "qcom,fast-charge-high-threshold-voltage", .reg = SMBB_CHG_VMAX, .safe_reg = SMBB_CHG_VSAFE, .max = 5000000, .min = 3240000, .hw_fn = smbb_vmax_fn, }, [ATTR_BAT_VMIN] = { .name = "qcom,fast-charge-low-threshold-voltage", .reg = SMBB_CHG_VBAT_WEAK, .max = 3600000, .min = 2100000, .hw_fn = smbb_vbat_weak_fn, }, [ATTR_CHG_VDET] = { .name = "qcom,auto-recharge-threshold-voltage", .reg = SMBB_CHG_VBAT_DET, .max = 5000000, .min = 3240000, .hw_fn = smbb_vbat_det_fn, }, [ATTR_VIN_MIN] = { .name = "qcom,minimum-input-voltage", .reg = SMBB_CHG_VIN_MIN, .max = 9600000, .min = 4200000, .hw_fn = smbb_vin_fn, }, [ATTR_USBIN_IMAX] = { .name = "usb-charge-current-limit", .reg = SMBB_USB_IMAX, .max = 2500000, .min = 100000, .hw_fn = smbb_imax_fn, }, }; static int smbb_charger_attr_write(struct smbb_charger *chg, enum smbb_attr which, unsigned int val) { const struct smbb_charger_attr *prop; unsigned int wval; unsigned int out; int rc; prop = &smbb_charger_attrs[which]; if (val > prop->max || val < prop->min) { dev_err(chg->dev, "value out of range for %s [%u:%u]\n", prop->name, prop->min, prop->max); return -EINVAL; } if (prop->safe_reg) { rc = regmap_read(chg->regmap, chg->addr + prop->safe_reg, &wval); if (rc) { dev_err(chg->dev, "unable to read safe value for '%s'\n", prop->name); return rc; } wval = prop->hw_fn(wval); if (val > wval) { dev_warn(chg->dev, "%s above safe value, clamping at %u\n", prop->name, wval); val = wval; } } wval = smbb_hw_lookup(val, prop->hw_fn); rc = regmap_write(chg->regmap, chg->addr + prop->reg, wval); if (rc) { dev_err(chg->dev, "unable to update %s", prop->name); return rc; } out = prop->hw_fn(wval); if (out != val) { dev_warn(chg->dev, "%s inaccurate, rounded to %u\n", prop->name, out); } dev_dbg(chg->dev, "%s <= %d\n", prop->name, out); chg->attr[which] = out; return 0; } static int smbb_charger_attr_read(struct smbb_charger *chg, enum smbb_attr which) { const struct smbb_charger_attr *prop; unsigned int val; int rc; prop = &smbb_charger_attrs[which]; rc = regmap_read(chg->regmap, chg->addr + prop->reg, &val); if (rc) { dev_err(chg->dev, "failed to read %s\n", prop->name); return rc; } val = prop->hw_fn(val); dev_dbg(chg->dev, "%s => %d\n", prop->name, val); chg->attr[which] = val; return 0; } static int smbb_charger_attr_parse(struct smbb_charger *chg, enum smbb_attr which) { const struct smbb_charger_attr *prop; unsigned int val; int rc; prop = &smbb_charger_attrs[which]; rc = of_property_read_u32(chg->dev->of_node, prop->name, &val); if (rc == 0) { rc = smbb_charger_attr_write(chg, which, val); if (!rc || !prop->fail_ok) return rc; } return smbb_charger_attr_read(chg, which); } static void smbb_set_line_flag(struct smbb_charger *chg, int irq, int flag) { bool state; int ret; ret = irq_get_irqchip_state(irq, IRQCHIP_STATE_LINE_LEVEL, &state); if (ret < 0) { dev_err(chg->dev, "failed to read irq line\n"); return; } mutex_lock(&chg->statlock); if (state) chg->status |= flag; else chg->status &= ~flag; mutex_unlock(&chg->statlock); dev_dbg(chg->dev, "status = %03lx\n", chg->status); } static irqreturn_t smbb_usb_valid_handler(int irq, void *_data) { struct smbb_charger *chg = _data; smbb_set_line_flag(chg, irq, STATUS_USBIN_VALID); power_supply_changed(chg->usb_psy); return IRQ_HANDLED; } static irqreturn_t smbb_dc_valid_handler(int irq, void *_data) { struct smbb_charger *chg = _data; smbb_set_line_flag(chg, irq, STATUS_DCIN_VALID); if (!chg->dc_disabled) power_supply_changed(chg->dc_psy); return IRQ_HANDLED; } static irqreturn_t smbb_bat_temp_handler(int irq, void *_data) { struct smbb_charger *chg = _data; unsigned int val; int rc; rc = regmap_read(chg->regmap, chg->addr + SMBB_BAT_TEMP_STATUS, &val); if (rc) return IRQ_HANDLED; mutex_lock(&chg->statlock); if (val & TEMP_STATUS_OK) { chg->status |= STATUS_BAT_OK; } else { chg->status &= ~STATUS_BAT_OK; if (val & TEMP_STATUS_HOT) chg->status |= STATUS_BAT_HOT; } mutex_unlock(&chg->statlock); power_supply_changed(chg->bat_psy); return IRQ_HANDLED; } static irqreturn_t smbb_bat_present_handler(int irq, void *_data) { struct smbb_charger *chg = _data; smbb_set_line_flag(chg, irq, STATUS_BAT_PRESENT); power_supply_changed(chg->bat_psy); return IRQ_HANDLED; } static irqreturn_t smbb_chg_done_handler(int irq, void *_data) { struct smbb_charger *chg = _data; smbb_set_line_flag(chg, irq, STATUS_CHG_DONE); power_supply_changed(chg->bat_psy); return IRQ_HANDLED; } static irqreturn_t smbb_chg_gone_handler(int irq, void *_data) { struct smbb_charger *chg = _data; smbb_set_line_flag(chg, irq, STATUS_CHG_GONE); power_supply_changed(chg->bat_psy); power_supply_changed(chg->usb_psy); if (!chg->dc_disabled) power_supply_changed(chg->dc_psy); return IRQ_HANDLED; } static irqreturn_t smbb_chg_fast_handler(int irq, void *_data) { struct smbb_charger *chg = _data; smbb_set_line_flag(chg, irq, STATUS_CHG_FAST); power_supply_changed(chg->bat_psy); return IRQ_HANDLED; } static irqreturn_t smbb_chg_trkl_handler(int irq, void *_data) { struct smbb_charger *chg = _data; smbb_set_line_flag(chg, irq, STATUS_CHG_TRKL); power_supply_changed(chg->bat_psy); return IRQ_HANDLED; } static const struct smbb_irq { const char *name; irqreturn_t (*handler)(int, void *); } smbb_charger_irqs[] = { { "chg-done", smbb_chg_done_handler }, { "chg-fast", smbb_chg_fast_handler }, { "chg-trkl", smbb_chg_trkl_handler }, { "bat-temp-ok", smbb_bat_temp_handler }, { "bat-present", smbb_bat_present_handler }, { "chg-gone", smbb_chg_gone_handler }, { "usb-valid", smbb_usb_valid_handler }, { "dc-valid", smbb_dc_valid_handler }, }; static int smbb_usbin_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct smbb_charger *chg = power_supply_get_drvdata(psy); int rc = 0; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: mutex_lock(&chg->statlock); val->intval = !(chg->status & STATUS_CHG_GONE) && (chg->status & STATUS_USBIN_VALID); mutex_unlock(&chg->statlock); break; case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: val->intval = chg->attr[ATTR_USBIN_IMAX]; break; case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX: val->intval = 2500000; break; default: rc = -EINVAL; break; } return rc; } static int smbb_usbin_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { struct smbb_charger *chg = power_supply_get_drvdata(psy); int rc; switch (psp) { case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: rc = smbb_charger_attr_write(chg, ATTR_USBIN_IMAX, val->intval); break; default: rc = -EINVAL; break; } return rc; } static int smbb_dcin_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct smbb_charger *chg = power_supply_get_drvdata(psy); int rc = 0; switch (psp) { case POWER_SUPPLY_PROP_ONLINE: mutex_lock(&chg->statlock); val->intval = !(chg->status & STATUS_CHG_GONE) && (chg->status & STATUS_DCIN_VALID); mutex_unlock(&chg->statlock); break; case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: val->intval = chg->attr[ATTR_DCIN_IMAX]; break; case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX: val->intval = 2500000; break; default: rc = -EINVAL; break; } return rc; } static int smbb_dcin_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { struct smbb_charger *chg = power_supply_get_drvdata(psy); int rc; switch (psp) { case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT: rc = smbb_charger_attr_write(chg, ATTR_DCIN_IMAX, val->intval); break; default: rc = -EINVAL; break; } return rc; } static int smbb_charger_writable_property(struct power_supply *psy, enum power_supply_property psp) { return psp == POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT; } static int smbb_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct smbb_charger *chg = power_supply_get_drvdata(psy); unsigned long status; int rc = 0; mutex_lock(&chg->statlock); status = chg->status; mutex_unlock(&chg->statlock); switch (psp) { case POWER_SUPPLY_PROP_STATUS: if (status & STATUS_CHG_GONE) val->intval = POWER_SUPPLY_STATUS_DISCHARGING; else if (!(status & (STATUS_DCIN_VALID | STATUS_USBIN_VALID))) val->intval = POWER_SUPPLY_STATUS_DISCHARGING; else if (status & STATUS_CHG_DONE) val->intval = POWER_SUPPLY_STATUS_FULL; else if (!(status & STATUS_BAT_OK)) val->intval = POWER_SUPPLY_STATUS_DISCHARGING; else if (status & (STATUS_CHG_FAST | STATUS_CHG_TRKL)) val->intval = POWER_SUPPLY_STATUS_CHARGING; else /* everything is ok for charging, but we are not... */ val->intval = POWER_SUPPLY_STATUS_DISCHARGING; break; case POWER_SUPPLY_PROP_HEALTH: if (status & STATUS_BAT_OK) val->intval = POWER_SUPPLY_HEALTH_GOOD; else if (status & STATUS_BAT_HOT) val->intval = POWER_SUPPLY_HEALTH_OVERHEAT; else val->intval = POWER_SUPPLY_HEALTH_COLD; break; case POWER_SUPPLY_PROP_CHARGE_TYPE: if (status & STATUS_CHG_FAST) val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST; else if (status & STATUS_CHG_TRKL) val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; else val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE; break; case POWER_SUPPLY_PROP_PRESENT: val->intval = !!(status & STATUS_BAT_PRESENT); break; case POWER_SUPPLY_PROP_CURRENT_MAX: val->intval = chg->attr[ATTR_BAT_IMAX]; break; case POWER_SUPPLY_PROP_VOLTAGE_MAX: val->intval = chg->attr[ATTR_BAT_VMAX]; break; case POWER_SUPPLY_PROP_TECHNOLOGY: /* this charger is a single-cell lithium-ion battery charger * only. If you hook up some other technology, there will be * fireworks. */ val->intval = POWER_SUPPLY_TECHNOLOGY_LION; break; case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: val->intval = 3000000; /* single-cell li-ion low end */ break; default: rc = -EINVAL; break; } return rc; } static int smbb_battery_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { struct smbb_charger *chg = power_supply_get_drvdata(psy); int rc; switch (psp) { case POWER_SUPPLY_PROP_CURRENT_MAX: rc = smbb_charger_attr_write(chg, ATTR_BAT_IMAX, val->intval); break; case POWER_SUPPLY_PROP_VOLTAGE_MAX: rc = smbb_charger_attr_write(chg, ATTR_BAT_VMAX, val->intval); break; default: rc = -EINVAL; break; } return rc; } static int smbb_battery_writable_property(struct power_supply *psy, enum power_supply_property psp) { switch (psp) { case POWER_SUPPLY_PROP_CURRENT_MAX: case POWER_SUPPLY_PROP_VOLTAGE_MAX: return 1; default: return 0; } } static enum power_supply_property smbb_charger_properties[] = { POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT, POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX, }; static enum power_supply_property smbb_battery_properties[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_HEALTH, POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_CHARGE_TYPE, POWER_SUPPLY_PROP_CURRENT_MAX, POWER_SUPPLY_PROP_VOLTAGE_MAX, POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN, POWER_SUPPLY_PROP_TECHNOLOGY, }; static const struct reg_off_mask_default { unsigned int offset; unsigned int mask; unsigned int value; unsigned int rev_mask; } smbb_charger_setup[] = { /* The bootloader is supposed to set this... make sure anyway. */ { SMBB_MISC_BOOT_DONE, BOOT_DONE, BOOT_DONE }, /* Disable software timer */ { SMBB_CHG_TCHG_MAX_EN, TCHG_MAX_EN, 0 }, /* Clear and disable watchdog */ { SMBB_CHG_WDOG_TIME, 0xff, 160 }, { SMBB_CHG_WDOG_EN, WDOG_EN, 0 }, /* Use charger based EoC detection */ { SMBB_CHG_IBAT_TERM_CHG, IBAT_TERM_CHG_IEOC, IBAT_TERM_CHG_IEOC_CHG }, /* Disable GSM PA load adjustment. * The PA signal is incorrectly connected on v2. */ { SMBB_CHG_CFG, 0xff, 0x00, BIT(3) }, /* Use VBAT (not VSYS) to compensate for IR drop during fast charging */ { SMBB_BUCK_REG_MODE, BUCK_REG_MODE, BUCK_REG_MODE_VBAT }, /* Enable battery temperature comparators */ { SMBB_BAT_BTC_CTRL, BTC_CTRL_COMP_EN, BTC_CTRL_COMP_EN }, /* Stop USB enumeration timer */ { SMBB_USB_ENUM_TIMER_STOP, ENUM_TIMER_STOP, ENUM_TIMER_STOP }, #if 0 /* FIXME supposedly only to disable hardware ARB termination */ { SMBB_USB_SEC_ACCESS, SEC_ACCESS_MAGIC }, { SMBB_USB_REV_BST, 0xff, REV_BST_CHG_GONE }, #endif /* Stop USB enumeration timer, again */ { SMBB_USB_ENUM_TIMER_STOP, ENUM_TIMER_STOP, ENUM_TIMER_STOP }, /* Enable charging */ { SMBB_CHG_CTRL, CTRL_EN, CTRL_EN }, }; static char *smbb_bif[] = { "smbb-bif" }; static const struct power_supply_desc bat_psy_desc = { .name = "smbb-bif", .type = POWER_SUPPLY_TYPE_BATTERY, .properties = smbb_battery_properties, .num_properties = ARRAY_SIZE(smbb_battery_properties), .get_property = smbb_battery_get_property, .set_property = smbb_battery_set_property, .property_is_writeable = smbb_battery_writable_property, }; static const struct power_supply_desc usb_psy_desc = { .name = "smbb-usbin", .type = POWER_SUPPLY_TYPE_USB, .properties = smbb_charger_properties, .num_properties = ARRAY_SIZE(smbb_charger_properties), .get_property = smbb_usbin_get_property, .set_property = smbb_usbin_set_property, .property_is_writeable = smbb_charger_writable_property, }; static const struct power_supply_desc dc_psy_desc = { .name = "smbb-dcin", .type = POWER_SUPPLY_TYPE_MAINS, .properties = smbb_charger_properties, .num_properties = ARRAY_SIZE(smbb_charger_properties), .get_property = smbb_dcin_get_property, .set_property = smbb_dcin_set_property, .property_is_writeable = smbb_charger_writable_property, }; static int smbb_charger_probe(struct platform_device *pdev) { struct power_supply_config bat_cfg = {}; struct power_supply_config usb_cfg = {}; struct power_supply_config dc_cfg = {}; struct smbb_charger *chg; int rc, i; chg = devm_kzalloc(&pdev->dev, sizeof(*chg), GFP_KERNEL); if (!chg) return -ENOMEM; chg->dev = &pdev->dev; mutex_init(&chg->statlock); chg->regmap = dev_get_regmap(pdev->dev.parent, NULL); if (!chg->regmap) { dev_err(&pdev->dev, "failed to locate regmap\n"); return -ENODEV; } rc = of_property_read_u32(pdev->dev.of_node, "reg", &chg->addr); if (rc) { dev_err(&pdev->dev, "missing or invalid 'reg' property\n"); return rc; } rc = regmap_read(chg->regmap, chg->addr + SMBB_MISC_REV2, &chg->revision); if (rc) { dev_err(&pdev->dev, "unable to read revision\n"); return rc; } chg->revision += 1; if (chg->revision != 2 && chg->revision != 3) { dev_err(&pdev->dev, "v1 hardware not supported\n"); return -ENODEV; } dev_info(&pdev->dev, "Initializing SMBB rev %u", chg->revision); chg->dc_disabled = of_property_read_bool(pdev->dev.of_node, "qcom,disable-dc"); for (i = 0; i < _ATTR_CNT; ++i) { rc = smbb_charger_attr_parse(chg, i); if (rc) { dev_err(&pdev->dev, "failed to parse/apply settings\n"); return rc; } } bat_cfg.drv_data = chg; bat_cfg.of_node = pdev->dev.of_node; chg->bat_psy = devm_power_supply_register(&pdev->dev, &bat_psy_desc, &bat_cfg); if (IS_ERR(chg->bat_psy)) { dev_err(&pdev->dev, "failed to register battery\n"); return PTR_ERR(chg->bat_psy); } usb_cfg.drv_data = chg; usb_cfg.supplied_to = smbb_bif; usb_cfg.num_supplicants = ARRAY_SIZE(smbb_bif); chg->usb_psy = devm_power_supply_register(&pdev->dev, &usb_psy_desc, &usb_cfg); if (IS_ERR(chg->usb_psy)) { dev_err(&pdev->dev, "failed to register USB power supply\n"); return PTR_ERR(chg->usb_psy); } if (!chg->dc_disabled) { dc_cfg.drv_data = chg; dc_cfg.supplied_to = smbb_bif; dc_cfg.num_supplicants = ARRAY_SIZE(smbb_bif); chg->dc_psy = devm_power_supply_register(&pdev->dev, &dc_psy_desc, &dc_cfg); if (IS_ERR(chg->dc_psy)) { dev_err(&pdev->dev, "failed to register DC power supply\n"); return PTR_ERR(chg->dc_psy); } } for (i = 0; i < ARRAY_SIZE(smbb_charger_irqs); ++i) { int irq; irq = platform_get_irq_byname(pdev, smbb_charger_irqs[i].name); if (irq < 0) { dev_err(&pdev->dev, "failed to get irq '%s'\n", smbb_charger_irqs[i].name); return irq; } smbb_charger_irqs[i].handler(irq, chg); rc = devm_request_threaded_irq(&pdev->dev, irq, NULL, smbb_charger_irqs[i].handler, IRQF_ONESHOT, smbb_charger_irqs[i].name, chg); if (rc) { dev_err(&pdev->dev, "failed to request irq '%s'\n", smbb_charger_irqs[i].name); return rc; } } chg->jeita_ext_temp = of_property_read_bool(pdev->dev.of_node, "qcom,jeita-extended-temp-range"); /* Set temperature range to [35%:70%] or [25%:80%] accordingly */ rc = regmap_update_bits(chg->regmap, chg->addr + SMBB_BAT_BTC_CTRL, BTC_CTRL_COLD_EXT | BTC_CTRL_HOT_EXT_N, chg->jeita_ext_temp ? BTC_CTRL_COLD_EXT : BTC_CTRL_HOT_EXT_N); if (rc) { dev_err(&pdev->dev, "unable to set %s temperature range\n", chg->jeita_ext_temp ? "JEITA extended" : "normal"); return rc; } for (i = 0; i < ARRAY_SIZE(smbb_charger_setup); ++i) { const struct reg_off_mask_default *r = &smbb_charger_setup[i]; if (r->rev_mask & BIT(chg->revision)) continue; rc = regmap_update_bits(chg->regmap, chg->addr + r->offset, r->mask, r->value); if (rc) { dev_err(&pdev->dev, "unable to initializing charging, bailing\n"); return rc; } } platform_set_drvdata(pdev, chg); return 0; } static int smbb_charger_remove(struct platform_device *pdev) { struct smbb_charger *chg; chg = platform_get_drvdata(pdev); regmap_update_bits(chg->regmap, chg->addr + SMBB_CHG_CTRL, CTRL_EN, 0); return 0; } static const struct of_device_id smbb_charger_id_table[] = { { .compatible = "qcom,pm8941-charger" }, { } }; MODULE_DEVICE_TABLE(of, smbb_charger_id_table); static struct platform_driver smbb_charger_driver = { .probe = smbb_charger_probe, .remove = smbb_charger_remove, .driver = { .name = "qcom-smbb", .of_match_table = smbb_charger_id_table, }, }; module_platform_driver(smbb_charger_driver); MODULE_DESCRIPTION("Qualcomm Switch-Mode Battery Charger and Boost driver"); MODULE_LICENSE("GPL v2");