power: supply: qcom_smbb: Add otg regulator for control of vbus (61274eff) · Commits · 戴 / test

drivers/power/supply/qcom_smbb.c

+70 −0

Original line number	Diff line number	Diff line
		@@ -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[] = {
		@@ -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");

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