| /* Copyright (c) 2016 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. |
| */ |
| |
| #include <linux/device.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/regmap.h> |
| #include <linux/power_supply.h> |
| #include <linux/interrupt.h> |
| #include <linux/of.h> |
| #include <linux/of_irq.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/of_regulator.h> |
| #include <linux/regulator/machine.h> |
| #include "smb-reg.h" |
| #include "smb-lib.h" |
| #include "pmic-voter.h" |
| |
| #define SMB2_DEFAULT_FCC_UA 1000000 |
| #define SMB2_DEFAULT_FV_UV 4350000 |
| #define SMB2_DEFAULT_ICL_UA 1500000 |
| |
| static struct smb_params v1_params = { |
| .fcc = { |
| .name = "fast charge current", |
| .reg = FAST_CHARGE_CURRENT_CFG_REG, |
| .min_u = 0, |
| .max_u = 4500000, |
| .step_u = 25000, |
| }, |
| .fv = { |
| .name = "float voltage", |
| .reg = FLOAT_VOLTAGE_CFG_REG, |
| .min_u = 2500000, |
| .max_u = 5000000, |
| .step_u = 10000, |
| }, |
| .usb_icl = { |
| .name = "usb input current limit", |
| .reg = USBIN_CURRENT_LIMIT_CFG_REG, |
| .min_u = 0, |
| .max_u = 6000000, |
| .step_u = 25000, |
| }, |
| .dc_icl = { |
| .name = "dc input current limit", |
| .reg = DCIN_CURRENT_LIMIT_CFG_REG, |
| .min_u = 0, |
| .max_u = 6000000, |
| .step_u = 25000, |
| }, |
| }; |
| |
| struct smb_dt_props { |
| bool suspend_input; |
| int fcc_ua; |
| int usb_icl_ua; |
| int dc_icl_ua; |
| int fv_uv; |
| }; |
| |
| struct smb2 { |
| struct smb_charger chg; |
| struct smb_dt_props dt; |
| bool bad_part; |
| }; |
| |
| static int __debug_mask; |
| module_param_named( |
| debug_mask, __debug_mask, int, 0600 |
| ); |
| |
| static int smb2_parse_dt(struct smb2 *chip) |
| { |
| struct smb_charger *chg = &chip->chg; |
| struct device_node *node = chg->dev->of_node; |
| int rc; |
| |
| if (!node) { |
| pr_err("device tree node missing\n"); |
| return -EINVAL; |
| } |
| |
| chip->dt.suspend_input = of_property_read_bool(node, |
| "qcom,suspend-input"); |
| |
| rc = of_property_read_u32(node, |
| "qcom,fcc-max-ua", &chip->dt.fcc_ua); |
| if (rc < 0) |
| chip->dt.fcc_ua = SMB2_DEFAULT_FCC_UA; |
| |
| rc = of_property_read_u32(node, |
| "qcom,fv-max-uv", &chip->dt.fv_uv); |
| if (rc < 0) |
| chip->dt.fv_uv = SMB2_DEFAULT_FV_UV; |
| |
| rc = of_property_read_u32(node, |
| "qcom,usb-icl-ua", &chip->dt.usb_icl_ua); |
| if (rc < 0) |
| chip->dt.usb_icl_ua = SMB2_DEFAULT_ICL_UA; |
| |
| rc = of_property_read_u32(node, |
| "qcom,dc-icl-ua", &chip->dt.dc_icl_ua); |
| if (rc < 0) |
| chip->dt.dc_icl_ua = SMB2_DEFAULT_ICL_UA; |
| |
| return 0; |
| } |
| |
| /************************ |
| * USB PSY REGISTRATION * |
| ************************/ |
| |
| static enum power_supply_property smb2_usb_props[] = { |
| POWER_SUPPLY_PROP_PRESENT, |
| POWER_SUPPLY_PROP_ONLINE, |
| POWER_SUPPLY_PROP_VOLTAGE_MIN, |
| POWER_SUPPLY_PROP_VOLTAGE_MAX, |
| POWER_SUPPLY_PROP_VOLTAGE_NOW, |
| POWER_SUPPLY_PROP_CURRENT_MAX, |
| POWER_SUPPLY_PROP_TYPE, |
| POWER_SUPPLY_PROP_TYPEC_MODE, |
| POWER_SUPPLY_PROP_TYPEC_POWER_ROLE, |
| POWER_SUPPLY_PROP_TYPEC_CC_ORIENTATION, |
| POWER_SUPPLY_PROP_PD_ALLOWED, |
| POWER_SUPPLY_PROP_PD_ACTIVE, |
| }; |
| |
| static int smb2_usb_get_prop(struct power_supply *psy, |
| enum power_supply_property psp, |
| union power_supply_propval *val) |
| { |
| struct smb2 *chip = power_supply_get_drvdata(psy); |
| struct smb_charger *chg = &chip->chg; |
| int rc = 0; |
| |
| switch (psp) { |
| case POWER_SUPPLY_PROP_PRESENT: |
| if (chip->bad_part) |
| val->intval = 1; |
| else |
| rc = smblib_get_prop_usb_present(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_ONLINE: |
| rc = smblib_get_prop_usb_online(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_VOLTAGE_MIN: |
| val->intval = chg->voltage_min_uv; |
| break; |
| case POWER_SUPPLY_PROP_VOLTAGE_MAX: |
| val->intval = chg->voltage_max_uv; |
| break; |
| case POWER_SUPPLY_PROP_VOLTAGE_NOW: |
| rc = smblib_get_prop_usb_voltage_now(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_CURRENT_MAX: |
| rc = smblib_get_prop_usb_current_max(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_TYPE: |
| if (chip->bad_part) |
| val->intval = POWER_SUPPLY_TYPE_USB; |
| else |
| val->intval = chg->usb_psy_desc.type; |
| break; |
| case POWER_SUPPLY_PROP_TYPEC_MODE: |
| if (chip->bad_part) |
| val->intval = POWER_SUPPLY_TYPEC_SOURCE_DEFAULT; |
| else |
| rc = smblib_get_prop_typec_mode(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_TYPEC_POWER_ROLE: |
| rc = smblib_get_prop_typec_power_role(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_TYPEC_CC_ORIENTATION: |
| rc = smblib_get_prop_typec_cc_orientation(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_PD_ALLOWED: |
| rc = smblib_get_prop_pd_allowed(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_PD_ACTIVE: |
| val->intval = chg->pd_active; |
| break; |
| default: |
| pr_err("get prop %d is not supported\n", psp); |
| rc = -EINVAL; |
| break; |
| } |
| return rc; |
| } |
| |
| static int smb2_usb_set_prop(struct power_supply *psy, |
| enum power_supply_property psp, |
| const union power_supply_propval *val) |
| { |
| struct smb2 *chip = power_supply_get_drvdata(psy); |
| struct smb_charger *chg = &chip->chg; |
| int rc = 0; |
| |
| switch (psp) { |
| case POWER_SUPPLY_PROP_VOLTAGE_MIN: |
| rc = smblib_set_prop_usb_voltage_min(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_VOLTAGE_MAX: |
| rc = smblib_set_prop_usb_voltage_max(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_CURRENT_MAX: |
| rc = smblib_set_prop_usb_current_max(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_TYPE: |
| if (chg->pd_active && val->intval == POWER_SUPPLY_TYPE_USB_PD) { |
| chg->usb_psy_desc.type = val->intval; |
| } else { |
| pr_err("set type %d not allowed\n", val->intval); |
| rc = -EINVAL; |
| } |
| break; |
| case POWER_SUPPLY_PROP_TYPEC_POWER_ROLE: |
| rc = smblib_set_prop_typec_power_role(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_PD_ACTIVE: |
| rc = smblib_set_prop_pd_active(chg, val); |
| break; |
| default: |
| pr_err("set prop %d is not supported\n", psp); |
| rc = -EINVAL; |
| break; |
| } |
| |
| return rc; |
| } |
| |
| static int smb2_usb_prop_is_writeable(struct power_supply *psy, |
| enum power_supply_property psp) |
| { |
| switch (psp) { |
| case POWER_SUPPLY_PROP_TYPEC_POWER_ROLE: |
| return 1; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static int smb2_init_usb_psy(struct smb2 *chip) |
| { |
| struct power_supply_config usb_cfg = {}; |
| struct smb_charger *chg = &chip->chg; |
| |
| chg->usb_psy_desc.name = "usb"; |
| chg->usb_psy_desc.type = POWER_SUPPLY_TYPE_UNKNOWN; |
| chg->usb_psy_desc.properties = smb2_usb_props; |
| chg->usb_psy_desc.num_properties = ARRAY_SIZE(smb2_usb_props); |
| chg->usb_psy_desc.get_property = smb2_usb_get_prop; |
| chg->usb_psy_desc.set_property = smb2_usb_set_prop; |
| chg->usb_psy_desc.property_is_writeable = smb2_usb_prop_is_writeable; |
| |
| usb_cfg.drv_data = chip; |
| usb_cfg.of_node = chg->dev->of_node; |
| chg->usb_psy = devm_power_supply_register(chg->dev, |
| &chg->usb_psy_desc, |
| &usb_cfg); |
| if (IS_ERR(chg->usb_psy)) { |
| pr_err("Couldn't register USB power supply\n"); |
| return PTR_ERR(chg->usb_psy); |
| } |
| |
| return 0; |
| } |
| |
| /************************* |
| * BATT PSY REGISTRATION * |
| *************************/ |
| |
| static enum power_supply_property smb2_batt_props[] = { |
| POWER_SUPPLY_PROP_INPUT_SUSPEND, |
| POWER_SUPPLY_PROP_STATUS, |
| POWER_SUPPLY_PROP_HEALTH, |
| POWER_SUPPLY_PROP_PRESENT, |
| POWER_SUPPLY_PROP_CHARGE_TYPE, |
| POWER_SUPPLY_PROP_CAPACITY, |
| }; |
| |
| static int smb2_batt_get_prop(struct power_supply *psy, |
| enum power_supply_property psp, |
| union power_supply_propval *val) |
| { |
| struct smb_charger *chg = power_supply_get_drvdata(psy); |
| |
| switch (psp) { |
| case POWER_SUPPLY_PROP_STATUS: |
| smblib_get_prop_batt_status(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_HEALTH: |
| smblib_get_prop_batt_health(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_PRESENT: |
| smblib_get_prop_batt_present(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_INPUT_SUSPEND: |
| smblib_get_prop_input_suspend(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_CHARGE_TYPE: |
| smblib_get_prop_batt_charge_type(chg, val); |
| break; |
| case POWER_SUPPLY_PROP_CAPACITY: |
| smblib_get_prop_batt_capacity(chg, val); |
| break; |
| default: |
| pr_err("batt power supply prop %d not supported\n", |
| psp); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int smb2_batt_set_prop(struct power_supply *psy, |
| enum power_supply_property prop, |
| const union power_supply_propval *val) |
| { |
| struct smb_charger *chg = power_supply_get_drvdata(psy); |
| |
| switch (prop) { |
| case POWER_SUPPLY_PROP_INPUT_SUSPEND: |
| smblib_set_prop_input_suspend(chg, val); |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int smb2_batt_prop_is_writeable(struct power_supply *psy, |
| enum power_supply_property psp) |
| { |
| switch (psp) { |
| case POWER_SUPPLY_PROP_INPUT_SUSPEND: |
| return 1; |
| default: |
| break; |
| } |
| |
| return 0; |
| } |
| |
| static const struct power_supply_desc batt_psy_desc = { |
| .name = "battery", |
| .type = POWER_SUPPLY_TYPE_BATTERY, |
| .properties = smb2_batt_props, |
| .num_properties = ARRAY_SIZE(smb2_batt_props), |
| .get_property = smb2_batt_get_prop, |
| .set_property = smb2_batt_set_prop, |
| .property_is_writeable = smb2_batt_prop_is_writeable, |
| }; |
| |
| static int smb2_init_batt_psy(struct smb2 *chip) |
| { |
| struct power_supply_config batt_cfg = {}; |
| struct smb_charger *chg = &chip->chg; |
| int rc = 0; |
| |
| batt_cfg.drv_data = chg; |
| batt_cfg.of_node = chg->dev->of_node; |
| chg->batt_psy = devm_power_supply_register(chg->dev, |
| &batt_psy_desc, |
| &batt_cfg); |
| if (IS_ERR(chg->batt_psy)) { |
| pr_err("Couldn't register battery power supply\n"); |
| return PTR_ERR(chg->batt_psy); |
| } |
| |
| return rc; |
| } |
| |
| /****************************** |
| * VBUS REGULATOR REGISTRATION * |
| ******************************/ |
| |
| struct regulator_ops smb2_vbus_reg_ops = { |
| .enable = smblib_vbus_regulator_enable, |
| .disable = smblib_vbus_regulator_disable, |
| .is_enabled = smblib_vbus_regulator_is_enabled, |
| }; |
| |
| static int smb2_init_vbus_regulator(struct smb2 *chip) |
| { |
| struct smb_charger *chg = &chip->chg; |
| struct regulator_config cfg = {}; |
| int rc = 0; |
| |
| chg->vbus_vreg = devm_kzalloc(chg->dev, sizeof(*chg->vbus_vreg), |
| GFP_KERNEL); |
| if (!chg->vbus_vreg) |
| return -ENOMEM; |
| |
| cfg.dev = chg->dev; |
| cfg.driver_data = chip; |
| |
| chg->vbus_vreg->rdesc.owner = THIS_MODULE; |
| chg->vbus_vreg->rdesc.type = REGULATOR_VOLTAGE; |
| chg->vbus_vreg->rdesc.ops = &smb2_vbus_reg_ops; |
| chg->vbus_vreg->rdesc.of_match = "qcom,smb2-vbus"; |
| chg->vbus_vreg->rdesc.name = "qcom,smb2-vbus"; |
| |
| chg->vbus_vreg->rdev = devm_regulator_register(chg->dev, |
| &chg->vbus_vreg->rdesc, &cfg); |
| if (IS_ERR(chg->vbus_vreg->rdev)) { |
| rc = PTR_ERR(chg->vbus_vreg->rdev); |
| chg->vbus_vreg->rdev = NULL; |
| if (rc != -EPROBE_DEFER) |
| pr_err("Couldn't register VBUS regualtor rc=%d\n", rc); |
| } |
| |
| return rc; |
| } |
| |
| /****************************** |
| * VCONN REGULATOR REGISTRATION * |
| ******************************/ |
| |
| struct regulator_ops smb2_vconn_reg_ops = { |
| .enable = smblib_vconn_regulator_enable, |
| .disable = smblib_vconn_regulator_disable, |
| .is_enabled = smblib_vconn_regulator_is_enabled, |
| }; |
| |
| static int smb2_init_vconn_regulator(struct smb2 *chip) |
| { |
| struct smb_charger *chg = &chip->chg; |
| struct regulator_config cfg = {}; |
| int rc = 0; |
| |
| chg->vconn_vreg = devm_kzalloc(chg->dev, sizeof(*chg->vconn_vreg), |
| GFP_KERNEL); |
| if (!chg->vconn_vreg) |
| return -ENOMEM; |
| |
| cfg.dev = chg->dev; |
| cfg.driver_data = chip; |
| |
| chg->vconn_vreg->rdesc.owner = THIS_MODULE; |
| chg->vconn_vreg->rdesc.type = REGULATOR_VOLTAGE; |
| chg->vconn_vreg->rdesc.ops = &smb2_vconn_reg_ops; |
| chg->vconn_vreg->rdesc.of_match = "qcom,smb2-vconn"; |
| chg->vconn_vreg->rdesc.name = "qcom,smb2-vconn"; |
| |
| chg->vconn_vreg->rdev = devm_regulator_register(chg->dev, |
| &chg->vconn_vreg->rdesc, &cfg); |
| if (IS_ERR(chg->vconn_vreg->rdev)) { |
| rc = PTR_ERR(chg->vconn_vreg->rdev); |
| chg->vconn_vreg->rdev = NULL; |
| if (rc != -EPROBE_DEFER) |
| pr_err("Couldn't register VCONN regualtor rc=%d\n", rc); |
| } |
| |
| return rc; |
| } |
| |
| /*************************** |
| * HARDWARE INITIALIZATION * |
| ***************************/ |
| |
| static int smb2_init_hw(struct smb2 *chip) |
| { |
| struct smb_charger *chg = &chip->chg; |
| int rc; |
| |
| /* votes must be cast before configuring software control */ |
| vote(chg->usb_suspend_votable, |
| DEFAULT_VOTER, chip->dt.suspend_input, 0); |
| vote(chg->dc_suspend_votable, |
| DEFAULT_VOTER, chip->dt.suspend_input, 0); |
| vote(chg->fcc_votable, |
| DEFAULT_VOTER, true, chip->dt.fcc_ua); |
| vote(chg->fv_votable, |
| DEFAULT_VOTER, true, chip->dt.fv_uv); |
| vote(chg->usb_icl_votable, |
| DEFAULT_VOTER, true, chip->dt.usb_icl_ua); |
| vote(chg->dc_icl_votable, |
| DEFAULT_VOTER, true, chip->dt.dc_icl_ua); |
| |
| /* configure charge enable for software control; active high */ |
| rc = smblib_masked_write(chg, CHGR_CFG2_REG, |
| CHG_EN_POLARITY_BIT | CHG_EN_SRC_BIT, 0); |
| if (rc < 0) { |
| dev_err(chg->dev, |
| "Couldn't configure charge enable source rc=%d\n", rc); |
| return rc; |
| } |
| |
| /* enable the charging path */ |
| rc = smblib_enable_charging(chg, true); |
| if (rc < 0) { |
| dev_err(chg->dev, "Couldn't enable charging rc=%d\n", rc); |
| return rc; |
| } |
| |
| /* |
| * trigger the usb-typec-change interrupt only when the CC state |
| * changes, or there was a VBUS error |
| */ |
| rc = smblib_write(chg, TYPE_C_INTRPT_ENB_REG, |
| TYPEC_CCSTATE_CHANGE_INT_EN_BIT |
| | TYPEC_VBUS_ERROR_INT_EN_BIT); |
| if (rc < 0) { |
| dev_err(chg->dev, |
| "Couldn't configure Type-C interrupts rc=%d\n", rc); |
| return rc; |
| } |
| |
| /* configure VCONN for software control */ |
| rc = smblib_masked_write(chg, TYPE_C_INTRPT_ENB_SOFTWARE_CTRL_REG, |
| VCONN_EN_SRC_BIT | VCONN_EN_VALUE_BIT, |
| VCONN_EN_SRC_BIT); |
| if (rc < 0) { |
| dev_err(chg->dev, |
| "Couldn't configure VCONN for SW control rc=%d\n", rc); |
| return rc; |
| } |
| |
| /* configure VBUS for software control */ |
| rc = smblib_masked_write(chg, OTG_CFG_REG, OTG_EN_SRC_CFG_BIT, 0); |
| if (rc < 0) { |
| dev_err(chg->dev, |
| "Couldn't configure VBUS for SW control rc=%d\n", rc); |
| return rc; |
| } |
| |
| /* configure power role for dual-role */ |
| rc = smblib_masked_write(chg, TYPE_C_INTRPT_ENB_SOFTWARE_CTRL_REG, |
| TYPEC_POWER_ROLE_CMD_MASK, 0); |
| if (rc < 0) { |
| dev_err(chg->dev, |
| "Couldn't configure power role for DRP rc=%d\n", rc); |
| return rc; |
| } |
| |
| /* disable Type-C factory mode */ |
| rc = smblib_masked_write(chg, TYPE_C_CFG_REG, |
| FACTORY_MODE_DETECTION_EN_BIT, 0); |
| if (rc < 0) { |
| dev_err(chg->dev, |
| "Couldn't disable Type-C factory mode rc=%d\n", rc); |
| return rc; |
| } |
| |
| return rc; |
| } |
| |
| /**************************** |
| * DETERMINE INITIAL STATUS * |
| ****************************/ |
| |
| static int smb2_determine_initial_status(struct smb2 *chip) |
| { |
| struct smb_irq_data irq_data = {chip, "determine-initial-status"}; |
| |
| smblib_handle_usb_plugin(0, &irq_data); |
| smblib_handle_usb_typec_change(0, &irq_data); |
| smblib_handle_usb_source_change(0, &irq_data); |
| |
| return 0; |
| } |
| |
| /************************** |
| * INTERRUPT REGISTRATION * |
| **************************/ |
| |
| struct smb2_irq_info { |
| const char *name; |
| const irq_handler_t handler; |
| }; |
| |
| static const struct smb2_irq_info smb2_irqs[] = { |
| /* CHARGER IRQs */ |
| { "chg-error", smblib_handle_debug }, |
| { "chg-state-change", smblib_handle_debug }, |
| { "step-chg-state-change", smblib_handle_debug }, |
| { "step-chg-soc-update-fail", smblib_handle_debug }, |
| { "step-chg-soc-update-request", smblib_handle_debug }, |
| /* OTG IRQs */ |
| { "otg-fail", smblib_handle_debug }, |
| { "otg-overcurrent", smblib_handle_debug }, |
| { "otg-oc-dis-sw-sts", smblib_handle_debug }, |
| { "testmode-change-detect", smblib_handle_debug }, |
| /* BATTERY IRQs */ |
| { "bat-temp", smblib_handle_batt_psy_changed }, |
| { "bat-ocp", smblib_handle_batt_psy_changed }, |
| { "bat-ov", smblib_handle_batt_psy_changed }, |
| { "bat-low", smblib_handle_batt_psy_changed }, |
| { "bat-therm-or-id-missing", smblib_handle_batt_psy_changed }, |
| { "bat-terminal-missing", smblib_handle_batt_psy_changed }, |
| /* USB INPUT IRQs */ |
| { "usbin-collapse", smblib_handle_debug }, |
| { "usbin-lt-3p6v", smblib_handle_debug }, |
| { "usbin-uv", smblib_handle_debug }, |
| { "usbin-ov", smblib_handle_debug }, |
| { "usbin-plugin", smblib_handle_usb_plugin }, |
| { "usbin-src-change", smblib_handle_usb_source_change }, |
| { "usbin-icl-change", smblib_handle_debug }, |
| { "type-c-change", smblib_handle_usb_typec_change }, |
| /* DC INPUT IRQs */ |
| { "dcin-collapse", smblib_handle_debug }, |
| { "dcin-lt-3p6v", smblib_handle_debug }, |
| { "dcin-uv", smblib_handle_debug }, |
| { "dcin-ov", smblib_handle_debug }, |
| { "dcin-plugin", smblib_handle_debug }, |
| { "div2-en-dg", smblib_handle_debug }, |
| { "dcin-icl-change", smblib_handle_debug }, |
| /* MISCELLANEOUS IRQs */ |
| { "wdog-snarl", smblib_handle_debug }, |
| { "wdog-bark", smblib_handle_debug }, |
| { "aicl-fail", smblib_handle_debug }, |
| { "aicl-done", smblib_handle_debug }, |
| { "high-duty-cycle", smblib_handle_debug }, |
| { "input-current-limiting", smblib_handle_debug }, |
| { "temperature-change", smblib_handle_debug }, |
| { "switcher-power-ok", smblib_handle_debug }, |
| }; |
| |
| static int smb2_get_irq_index_byname(const char *irq_name) |
| { |
| int i; |
| |
| for (i = 0; i < ARRAY_SIZE(smb2_irqs); i++) { |
| if (strcmp(smb2_irqs[i].name, irq_name) == 0) |
| return i; |
| } |
| |
| return -ENOENT; |
| } |
| |
| static int smb2_request_interrupt(struct smb2 *chip, |
| struct device_node *node, const char *irq_name) |
| { |
| struct smb_charger *chg = &chip->chg; |
| int rc, irq, irq_index; |
| struct smb_irq_data *irq_data; |
| |
| 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 = smb2_get_irq_index_byname(irq_name); |
| if (irq_index < 0) { |
| pr_err("%s is not a defined irq\n", irq_name); |
| return irq_index; |
| } |
| |
| irq_data = devm_kzalloc(chg->dev, sizeof(*irq_data), GFP_KERNEL); |
| if (!irq_data) |
| return -ENOMEM; |
| |
| irq_data->parent_data = chip; |
| irq_data->name = irq_name; |
| |
| rc = devm_request_threaded_irq(chg->dev, irq, NULL, |
| smb2_irqs[irq_index].handler, |
| IRQF_ONESHOT, irq_name, irq_data); |
| if (rc < 0) { |
| pr_err("Couldn't request irq %d\n", irq); |
| return rc; |
| } |
| |
| return rc; |
| } |
| |
| static int smb2_request_interrupts(struct smb2 *chip) |
| { |
| struct smb_charger *chg = &chip->chg; |
| struct device_node *node = chg->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 = smb2_request_interrupt(chip, child, name); |
| if (rc < 0) |
| return rc; |
| } |
| } |
| |
| return rc; |
| } |
| |
| /********* |
| * PROBE * |
| *********/ |
| |
| static int smb2_probe(struct platform_device *pdev) |
| { |
| struct smb2 *chip; |
| struct smb_charger *chg; |
| int rc = 0; |
| u8 stat; |
| |
| chip = devm_kzalloc(&pdev->dev, sizeof(*chip), GFP_KERNEL); |
| if (!chip) |
| return -ENOMEM; |
| |
| chg = &chip->chg; |
| chg->dev = &pdev->dev; |
| chg->param = v1_params; |
| chg->debug_mask = &__debug_mask; |
| |
| chg->regmap = dev_get_regmap(chg->dev->parent, NULL); |
| if (!chg->regmap) { |
| pr_err("parent regmap is missing\n"); |
| return -EINVAL; |
| } |
| |
| smblib_init(chg); |
| |
| rc = smb2_parse_dt(chip); |
| if (rc < 0) { |
| pr_err("Couldn't parse device tree rc=%d\n", rc); |
| goto cleanup; |
| } |
| |
| /* set driver data before resources request it */ |
| platform_set_drvdata(pdev, chip); |
| |
| rc = smb2_init_vbus_regulator(chip); |
| if (rc < 0) { |
| pr_err("Couldn't initialize vbus regulator rc=%d\n", |
| rc); |
| goto cleanup; |
| } |
| |
| rc = smb2_init_vconn_regulator(chip); |
| if (rc < 0) { |
| pr_err("Couldn't initialize vconn regulator rc=%d\n", |
| rc); |
| goto cleanup; |
| } |
| |
| rc = smb2_init_usb_psy(chip); |
| if (rc < 0) { |
| pr_err("Couldn't initialize usb psy rc=%d\n", rc); |
| goto cleanup; |
| } |
| |
| rc = smblib_read(chg, SHDN_CMD_REG, &stat); |
| if (rc < 0) { |
| pr_err("Couldn't read MISC_SHDN_CMD_REG rc=%d\n", rc); |
| return rc; |
| } |
| |
| if (stat) { |
| pr_err("bad charger part; faking USB insertion\n"); |
| chip->bad_part = true; |
| power_supply_changed(chg->usb_psy); |
| return 0; |
| } |
| |
| rc = smb2_init_batt_psy(chip); |
| if (rc < 0) { |
| pr_err("Couldn't initialize batt psy rc=%d\n", rc); |
| goto cleanup; |
| } |
| |
| rc = smb2_init_hw(chip); |
| if (rc < 0) { |
| pr_err("Couldn't initialize hardware rc=%d\n", rc); |
| goto cleanup; |
| } |
| |
| rc = smb2_determine_initial_status(chip); |
| if (rc < 0) { |
| pr_err("Couldn't determine initial status rc=%d\n", |
| rc); |
| goto cleanup; |
| } |
| |
| rc = smb2_request_interrupts(chip); |
| if (rc < 0) { |
| pr_err("Couldn't request interrupts rc=%d\n", rc); |
| goto cleanup; |
| } |
| |
| pr_info("QPNP SMB2 probed successfully\n"); |
| return rc; |
| |
| cleanup: |
| if (chg->usb_psy) |
| power_supply_unregister(chg->usb_psy); |
| if (chg->batt_psy) |
| power_supply_unregister(chg->batt_psy); |
| if (chg->vconn_vreg && chg->vconn_vreg->rdev) |
| regulator_unregister(chg->vconn_vreg->rdev); |
| if (chg->vbus_vreg && chg->vbus_vreg->rdev) |
| regulator_unregister(chg->vbus_vreg->rdev); |
| platform_set_drvdata(pdev, NULL); |
| return rc; |
| } |
| |
| static int smb2_remove(struct platform_device *pdev) |
| { |
| struct smb2 *chip = platform_get_drvdata(pdev); |
| struct smb_charger *chg = &chip->chg; |
| |
| power_supply_unregister(chg->batt_psy); |
| power_supply_unregister(chg->usb_psy); |
| regulator_unregister(chg->vconn_vreg->rdev); |
| regulator_unregister(chg->vbus_vreg->rdev); |
| |
| platform_set_drvdata(pdev, NULL); |
| return 0; |
| } |
| |
| static const struct of_device_id match_table[] = { |
| { .compatible = "qcom,qpnp-smb2", }, |
| { }, |
| }; |
| |
| static struct platform_driver smb2_driver = { |
| .driver = { |
| .name = "qcom,qpnp-smb2", |
| .owner = THIS_MODULE, |
| .of_match_table = match_table, |
| }, |
| .probe = smb2_probe, |
| .remove = smb2_remove, |
| }; |
| module_platform_driver(smb2_driver); |
| |
| MODULE_DESCRIPTION("QPNP SMB2 Charger Driver"); |
| MODULE_LICENSE("GPL v2"); |