diff options
Diffstat (limited to 'drivers/power/supply/qcom_smbb.c')
| -rw-r--r-- | drivers/power/supply/qcom_smbb.c | 72 |
1 files changed, 71 insertions, 1 deletions
diff --git a/drivers/power/supply/qcom_smbb.c b/drivers/power/supply/qcom_smbb.c index b5896ba2a602..f6a0d245731d 100644 --- a/drivers/power/supply/qcom_smbb.c +++ b/drivers/power/supply/qcom_smbb.c @@ -35,6 +35,7 @@ #include <linux/regmap.h> #include <linux/slab.h> #include <linux/extcon.h> +#include <linux/regulator/driver.h> #define SMBB_CHG_VMAX 0x040 #define SMBB_CHG_VSAFE 0x041 @@ -72,6 +73,8 @@ #define BTC_CTRL_HOT_EXT_N BIT(0) #define SMBB_USB_IMAX 0x344 +#define SMBB_USB_OTG_CTL 0x348 +#define OTG_CTL_EN BIT(0) #define SMBB_USB_ENUM_TIMER_STOP 0x34e #define ENUM_TIMER_STOP BIT(0) #define SMBB_USB_SEC_ACCESS 0x3d0 @@ -125,6 +128,9 @@ struct smbb_charger { struct power_supply *dc_psy; struct power_supply *bat_psy; struct regmap *regmap; + + struct regulator_desc otg_rdesc; + struct regulator_dev *otg_reg; }; static const unsigned int smbb_usb_extcon_cable[] = { @@ -378,7 +384,7 @@ 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); - extcon_set_cable_state_(chg->edev, EXTCON_USB, + extcon_set_state_sync(chg->edev, EXTCON_USB, chg->status & STATUS_USBIN_VALID); power_supply_changed(chg->usb_psy); @@ -787,12 +793,56 @@ static const struct power_supply_desc dc_psy_desc = { .property_is_writeable = smbb_charger_writable_property, }; +static int smbb_chg_otg_enable(struct regulator_dev *rdev) +{ + struct smbb_charger *chg = rdev_get_drvdata(rdev); + int rc; + + rc = regmap_update_bits(chg->regmap, chg->addr + SMBB_USB_OTG_CTL, + OTG_CTL_EN, OTG_CTL_EN); + if (rc) + dev_err(chg->dev, "failed to update OTG_CTL\n"); + return rc; +} + +static int smbb_chg_otg_disable(struct regulator_dev *rdev) +{ + struct smbb_charger *chg = rdev_get_drvdata(rdev); + int rc; + + rc = regmap_update_bits(chg->regmap, chg->addr + SMBB_USB_OTG_CTL, + OTG_CTL_EN, 0); + if (rc) + dev_err(chg->dev, "failed to update OTG_CTL\n"); + return rc; +} + +static int smbb_chg_otg_is_enabled(struct regulator_dev *rdev) +{ + struct smbb_charger *chg = rdev_get_drvdata(rdev); + unsigned int value = 0; + int rc; + + rc = regmap_read(chg->regmap, chg->addr + SMBB_USB_OTG_CTL, &value); + if (rc) + dev_err(chg->dev, "failed to read OTG_CTL\n"); + + return !!(value & OTG_CTL_EN); +} + +static const struct regulator_ops smbb_chg_otg_ops = { + .enable = smbb_chg_otg_enable, + .disable = smbb_chg_otg_disable, + .is_enabled = smbb_chg_otg_is_enabled, +}; + 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; + struct regulator_config config = { }; int rc, i; chg = devm_kzalloc(&pdev->dev, sizeof(*chg), GFP_KERNEL); @@ -905,6 +955,26 @@ static int smbb_charger_probe(struct platform_device *pdev) } } + /* + * otg regulator is used to control VBUS voltage direction + * when USB switches between host and gadget mode + */ + chg->otg_rdesc.id = -1; + chg->otg_rdesc.name = "otg-vbus"; + chg->otg_rdesc.ops = &smbb_chg_otg_ops; + chg->otg_rdesc.owner = THIS_MODULE; + chg->otg_rdesc.type = REGULATOR_VOLTAGE; + chg->otg_rdesc.supply_name = "usb-otg-in"; + chg->otg_rdesc.of_match = "otg-vbus"; + + config.dev = &pdev->dev; + config.driver_data = chg; + + chg->otg_reg = devm_regulator_register(&pdev->dev, &chg->otg_rdesc, + &config); + if (IS_ERR(chg->otg_reg)) + return PTR_ERR(chg->otg_reg); + chg->jeita_ext_temp = of_property_read_bool(pdev->dev.of_node, "qcom,jeita-extended-temp-range"); |