Merge tag 'psy-extcon-i2c-mfd-for-v5.18-signed' into psy-next

Immutable branch between power-supply, mfd, i2c and extcon for for 5.18

This immutable branch fixes the charger setup on Xiaomi Mi Pad 2 and
Lenovo Yogabook, which requires updates to multiple drivers throughout
the tree.
Signed-off-by: Sebastian Reichel <sre@kernel.org>

drivers/extcon/Kconfig

@@ -61,6 +61,8 @@ config EXTCON_INTEL_INT3496
 config EXTCON_INTEL_CHT_WC
 	tristate "Intel Cherrytrail Whiskey Cove PMIC extcon driver"
 	depends on INTEL_SOC_PMIC_CHTWC
+	depends on USB_SUPPORT
+	select USB_ROLE_SWITCH
 	help
 	  Say Y here to enable extcon support for charger detection / control
 	  on the Intel Cherrytrail Whiskey Cove PMIC.

drivers/extcon/extcon-intel-cht-wc.c

@@ -14,8 +14,12 @@
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 #include <linux/slab.h>
+#include <linux/usb/role.h>
 
 #include "extcon-intel.h"
 
@@ -101,8 +105,13 @@ struct cht_wc_extcon_data {
 	struct device *dev;
 	struct regmap *regmap;
 	struct extcon_dev *edev;
+	struct usb_role_switch *role_sw;
+	struct regulator *vbus_boost;
+	struct power_supply *psy;
+	enum power_supply_usb_type usb_type;
 	unsigned int previous_cable;
 	bool usb_host;
+	bool vbus_boost_enabled;
 };
 
 static int cht_wc_extcon_get_id(struct cht_wc_extcon_data *ext, int pwrsrc_sts)
@@ -112,13 +121,21 @@ static int cht_wc_extcon_get_id(struct cht_wc_extcon_data *ext, int pwrsrc_sts)
 		return INTEL_USB_ID_GND;
 	case CHT_WC_PWRSRC_RID_FLOAT:
 		return INTEL_USB_ID_FLOAT;
-	case CHT_WC_PWRSRC_RID_ACA:
-	default:
 	/*
-		 * Once we have IIO support for the GPADC we should read
-		 * the USBID GPADC channel here and determine ACA role
-		 * based on that.
+	 * According to the spec. we should read the USB-ID pin ADC value here
+	 * to determine the resistance of the used pull-down resister and then
+	 * return RID_A / RID_B / RID_C based on this. But all "Accessory
+	 * Charger Adapter"s (ACAs) which users can actually buy always use
+	 * a combination of a charging port with one or more USB-A ports, so
+	 * they should always use a resistor indicating RID_A. But the spec
+	 * is hard to read / badly-worded so some of them actually indicate
+	 * they are a RID_B ACA evnen though they clearly are a RID_A ACA.
+	 * To workaround this simply always return INTEL_USB_RID_A, which
+	 * matches all the ACAs which users can actually buy.
 	 */
+	case CHT_WC_PWRSRC_RID_ACA:
+		return INTEL_USB_RID_A;
+	default:
 		return INTEL_USB_ID_FLOAT;
 	}
 }
@@ -147,14 +164,15 @@ static int cht_wc_extcon_get_charger(struct cht_wc_extcon_data *ext,
 	} while (time_before(jiffies, timeout));
 
 	if (status != CHT_WC_USBSRC_STS_SUCCESS) {
-		if (ignore_errors)
-			return EXTCON_CHG_USB_SDP; /* Save fallback */
-
+		if (!ignore_errors) {
 			if (status == CHT_WC_USBSRC_STS_FAIL)
 				dev_warn(ext->dev, "Could not detect charger type\n");
 			else
 				dev_warn(ext->dev, "Timeout detecting charger type\n");
-		return EXTCON_CHG_USB_SDP; /* Save fallback */
+		}
+
+		/* Safe fallback */
+		usbsrc = CHT_WC_USBSRC_TYPE_SDP << CHT_WC_USBSRC_TYPE_SHIFT;
 	}
 
 	usbsrc = (usbsrc & CHT_WC_USBSRC_TYPE_MASK) >> CHT_WC_USBSRC_TYPE_SHIFT;
@@ -163,18 +181,23 @@ static int cht_wc_extcon_get_charger(struct cht_wc_extcon_data *ext,
 		dev_warn(ext->dev,
 			"Unhandled charger type %d, defaulting to SDP\n",
 			 ret);
+		ext->usb_type = POWER_SUPPLY_USB_TYPE_SDP;
 		return EXTCON_CHG_USB_SDP;
 	case CHT_WC_USBSRC_TYPE_SDP:
 	case CHT_WC_USBSRC_TYPE_FLOATING:
 	case CHT_WC_USBSRC_TYPE_OTHER:
+		ext->usb_type = POWER_SUPPLY_USB_TYPE_SDP;
 		return EXTCON_CHG_USB_SDP;
 	case CHT_WC_USBSRC_TYPE_CDP:
+		ext->usb_type = POWER_SUPPLY_USB_TYPE_CDP;
 		return EXTCON_CHG_USB_CDP;
 	case CHT_WC_USBSRC_TYPE_DCP:
 	case CHT_WC_USBSRC_TYPE_DCP_EXTPHY:
 	case CHT_WC_USBSRC_TYPE_MHL: /* MHL2+ delivers upto 2A, treat as DCP */
+		ext->usb_type = POWER_SUPPLY_USB_TYPE_DCP;
 		return EXTCON_CHG_USB_DCP;
 	case CHT_WC_USBSRC_TYPE_ACA:
+		ext->usb_type = POWER_SUPPLY_USB_TYPE_ACA;
 		return EXTCON_CHG_USB_ACA;
 	}
 }
@@ -216,6 +239,18 @@ static void cht_wc_extcon_set_otgmode(struct cht_wc_extcon_data *ext,
 				 CHT_WC_CHGRCTRL1_OTGMODE, val);
 	if (ret)
 		dev_err(ext->dev, "Error updating CHGRCTRL1 reg: %d\n", ret);
+
+	if (ext->vbus_boost && ext->vbus_boost_enabled != enable) {
+		if (enable)
+			ret = regulator_enable(ext->vbus_boost);
+		else
+			ret = regulator_disable(ext->vbus_boost);
+
+		if (ret)
+			dev_err(ext->dev, "Error updating Vbus boost regulator: %d\n", ret);
+		else
+			ext->vbus_boost_enabled = enable;
+	}
 }
 
 static void cht_wc_extcon_enable_charging(struct cht_wc_extcon_data *ext,
@@ -245,6 +280,9 @@ static void cht_wc_extcon_pwrsrc_event(struct cht_wc_extcon_data *ext)
 	unsigned int cable = EXTCON_NONE;
 	/* Ignore errors in host mode, as the 5v boost converter is on then */
 	bool ignore_get_charger_errors = ext->usb_host;
+	enum usb_role role;
+
+	ext->usb_type = POWER_SUPPLY_USB_TYPE_UNKNOWN;
 
 	ret = regmap_read(ext->regmap, CHT_WC_PWRSRC_STS, &pwrsrc_sts);
 	if (ret) {
@@ -288,6 +326,21 @@ static void cht_wc_extcon_pwrsrc_event(struct cht_wc_extcon_data *ext)
 
 	ext->usb_host = ((id == INTEL_USB_ID_GND) || (id == INTEL_USB_RID_A));
 	extcon_set_state_sync(ext->edev, EXTCON_USB_HOST, ext->usb_host);
+
+	if (ext->usb_host)
+		role = USB_ROLE_HOST;
+	else if (pwrsrc_sts & CHT_WC_PWRSRC_VBUS)
+		role = USB_ROLE_DEVICE;
+	else
+		role = USB_ROLE_NONE;
+
+	/* Note: this is a no-op when ext->role_sw is NULL */
+	ret = usb_role_switch_set_role(ext->role_sw, role);
+	if (ret)
+		dev_err(ext->dev, "Error setting USB-role: %d\n", ret);
+
+	if (ext->psy)
+		power_supply_changed(ext->psy);
 }
 
 static irqreturn_t cht_wc_extcon_isr(int irq, void *data)
@@ -333,6 +386,114 @@ static int cht_wc_extcon_sw_control(struct cht_wc_extcon_data *ext, bool enable)
 	return ret;
 }
 
+static int cht_wc_extcon_find_role_sw(struct cht_wc_extcon_data *ext)
+{
+	const struct software_node *swnode;
+	struct fwnode_handle *fwnode;
+
+	swnode = software_node_find_by_name(NULL, "intel-xhci-usb-sw");
+	if (!swnode)
+		return -EPROBE_DEFER;
+
+	fwnode = software_node_fwnode(swnode);
+	ext->role_sw = usb_role_switch_find_by_fwnode(fwnode);
+	fwnode_handle_put(fwnode);
+
+	return ext->role_sw ? 0 : -EPROBE_DEFER;
+}
+
+static void cht_wc_extcon_put_role_sw(void *data)
+{
+	struct cht_wc_extcon_data *ext = data;
+
+	usb_role_switch_put(ext->role_sw);
+}
+
+/* Some boards require controlling the role-sw and Vbus based on the id-pin */
+static int cht_wc_extcon_get_role_sw_and_regulator(struct cht_wc_extcon_data *ext)
+{
+	int ret;
+
+	ret = cht_wc_extcon_find_role_sw(ext);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(ext->dev, cht_wc_extcon_put_role_sw, ext);
+	if (ret)
+		return ret;
+
+	/*
+	 * On x86/ACPI platforms the regulator <-> consumer link is provided
+	 * by platform_data passed to the regulator driver. This means that
+	 * this info is not available before the regulator driver has bound.
+	 * Use devm_regulator_get_optional() to avoid getting a dummy
+	 * regulator and wait for the regulator to show up if necessary.
+	 */
+	ext->vbus_boost = devm_regulator_get_optional(ext->dev, "vbus");
+	if (IS_ERR(ext->vbus_boost)) {
+		ret = PTR_ERR(ext->vbus_boost);
+		if (ret == -ENODEV)
+			ret = -EPROBE_DEFER;
+
+		return dev_err_probe(ext->dev, ret, "getting Vbus regulator");
+	}
+
+	return 0;
+}
+
+static int cht_wc_extcon_psy_get_prop(struct power_supply *psy,
+				      enum power_supply_property psp,
+				      union power_supply_propval *val)
+{
+	struct cht_wc_extcon_data *ext = power_supply_get_drvdata(psy);
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_USB_TYPE:
+		val->intval = ext->usb_type;
+		break;
+	case POWER_SUPPLY_PROP_ONLINE:
+		val->intval = ext->usb_type ? 1 : 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const enum power_supply_usb_type cht_wc_extcon_psy_usb_types[] = {
+	POWER_SUPPLY_USB_TYPE_SDP,
+	POWER_SUPPLY_USB_TYPE_CDP,
+	POWER_SUPPLY_USB_TYPE_DCP,
+	POWER_SUPPLY_USB_TYPE_ACA,
+	POWER_SUPPLY_USB_TYPE_UNKNOWN,
+};
+
+static const enum power_supply_property cht_wc_extcon_psy_props[] = {
+	POWER_SUPPLY_PROP_USB_TYPE,
+	POWER_SUPPLY_PROP_ONLINE,
+};
+
+static const struct power_supply_desc cht_wc_extcon_psy_desc = {
+	.name = "cht_wcove_pwrsrc",
+	.type = POWER_SUPPLY_TYPE_USB,
+	.usb_types = cht_wc_extcon_psy_usb_types,
+	.num_usb_types = ARRAY_SIZE(cht_wc_extcon_psy_usb_types),
+	.properties = cht_wc_extcon_psy_props,
+	.num_properties = ARRAY_SIZE(cht_wc_extcon_psy_props),
+	.get_property = cht_wc_extcon_psy_get_prop,
+};
+
+static int cht_wc_extcon_register_psy(struct cht_wc_extcon_data *ext)
+{
+	struct power_supply_config psy_cfg = { .drv_data = ext };
+
+	ext->psy = devm_power_supply_register(ext->dev,
+					      &cht_wc_extcon_psy_desc,
+					      &psy_cfg);
+	return PTR_ERR_OR_ZERO(ext->psy);
+}
+
 static int cht_wc_extcon_probe(struct platform_device *pdev)
 {
 	struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
@@ -358,6 +519,8 @@ static int cht_wc_extcon_probe(struct platform_device *pdev)
 	if (IS_ERR(ext->edev))
 		return PTR_ERR(ext->edev);
 
+	switch (pmic->cht_wc_model) {
+	case INTEL_CHT_WC_GPD_WIN_POCKET:
 		/*
 		 * When a host-cable is detected the BIOS enables an external 5v boost
 		 * converter to power connected devices there are 2 problems with this:
@@ -372,6 +535,31 @@ static int cht_wc_extcon_probe(struct platform_device *pdev)
 		 * external 5v boost converter off and leave it off entirely.
 		 */
 		cht_wc_extcon_set_5v_boost(ext, false);
+		break;
+	case INTEL_CHT_WC_LENOVO_YOGABOOK1:
+		/* Do this first, as it may very well return -EPROBE_DEFER. */
+		ret = cht_wc_extcon_get_role_sw_and_regulator(ext);
+		if (ret)
+			return ret;
+		/*
+		 * The bq25890 used here relies on this driver's BC-1.2 charger
+		 * detection, and the bq25890 driver expect this info to be
+		 * available through a parent power_supply class device which
+		 * models the detected charger (idem to how the Type-C TCPM code
+		 * registers a power_supply classdev for the connected charger).
+		 */
+		ret = cht_wc_extcon_register_psy(ext);
+		if (ret)
+			return ret;
+		break;
+	case INTEL_CHT_WC_XIAOMI_MIPAD2:
+		ret = cht_wc_extcon_get_role_sw_and_regulator(ext);
+		if (ret)
+			return ret;
+		break;
+	default:
+		break;
+	}
 
 	/* Enable sw control */
 	ret = cht_wc_extcon_sw_control(ext, true);

drivers/i2c/busses/i2c-cht-wc.c

@@ -18,6 +18,7 @@
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/power/bq24190_charger.h>
+#include <linux/power/bq25890_charger.h>
 #include <linux/slab.h>
 
 #define CHT_WC_I2C_CTRL			0x5e24
@@ -270,6 +271,7 @@ static const struct irq_chip cht_wc_i2c_irq_chip = {
 	.name			= "cht_wc_ext_chrg_irq_chip",
 };
 
+/********** GPD Win / Pocket charger IC settings **********/
 static const char * const bq24190_suppliers[] = {
 	"tcpm-source-psy-i2c-fusb302" };
 
@@ -304,17 +306,92 @@ static struct bq24190_platform_data bq24190_pdata = {
 	.regulator_init_data = &bq24190_vbus_init_data,
 };
 
-static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev)
-{
-	struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
-	struct cht_wc_i2c_adap *adap;
-	struct i2c_board_info board_info = {
+static struct i2c_board_info gpd_win_board_info = {
 	.type = "bq24190",
 	.addr = 0x6b,
 	.dev_name = "bq24190",
 	.swnode = &bq24190_node,
 	.platform_data = &bq24190_pdata,
-	};
+};
+
+/********** Xiaomi Mi Pad 2 charger IC settings  **********/
+static struct regulator_consumer_supply bq2589x_vbus_consumer = {
+	.supply = "vbus",
+	.dev_name = "cht_wcove_pwrsrc",
+};
+
+static const struct regulator_init_data bq2589x_vbus_init_data = {
+	.constraints = {
+		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
+	},
+	.consumer_supplies = &bq2589x_vbus_consumer,
+	.num_consumer_supplies = 1,
+};
+
+static struct bq25890_platform_data bq2589x_pdata = {
+	.regulator_init_data = &bq2589x_vbus_init_data,
+};
+
+static const struct property_entry xiaomi_mipad2_props[] = {
+	PROPERTY_ENTRY_BOOL("linux,skip-reset"),
+	PROPERTY_ENTRY_BOOL("linux,read-back-settings"),
+	{ }
+};
+
+static const struct software_node xiaomi_mipad2_node = {
+	.properties = xiaomi_mipad2_props,
+};
+
+static struct i2c_board_info xiaomi_mipad2_board_info = {
+	.type = "bq25890",
+	.addr = 0x6a,
+	.dev_name = "bq25890",
+	.swnode = &xiaomi_mipad2_node,
+	.platform_data = &bq2589x_pdata,
+};
+
+/********** Lenovo Yogabook YB1-X90F/-X91F/-X91L charger settings **********/
+static const char * const lenovo_yb1_bq25892_suppliers[] = { "cht_wcove_pwrsrc" };
+
+static const struct property_entry lenovo_yb1_bq25892_props[] = {
+	PROPERTY_ENTRY_STRING_ARRAY("supplied-from",
+				    lenovo_yb1_bq25892_suppliers),
+	PROPERTY_ENTRY_U32("linux,pump-express-vbus-max", 12000000),
+	PROPERTY_ENTRY_BOOL("linux,skip-reset"),
+	/*
+	 * The firmware sets everything to the defaults, which leads to a
+	 * somewhat low charge-current of 2048mA and worse to a battery-voltage
+	 * of 4.2V instead of 4.35V (when booted without a charger connected).
+	 * Use our own values instead of "linux,read-back-settings" to fix this.
+	 */
+	PROPERTY_ENTRY_U32("ti,charge-current", 4224000),
+	PROPERTY_ENTRY_U32("ti,battery-regulation-voltage", 4352000),
+	PROPERTY_ENTRY_U32("ti,termination-current", 256000),
+	PROPERTY_ENTRY_U32("ti,precharge-current", 128000),
+	PROPERTY_ENTRY_U32("ti,minimum-sys-voltage", 3500000),
+	PROPERTY_ENTRY_U32("ti,boost-voltage", 4998000),
+	PROPERTY_ENTRY_U32("ti,boost-max-current", 1400000),
+	PROPERTY_ENTRY_BOOL("ti,use-ilim-pin"),
+	{ }
+};
+
+static const struct software_node lenovo_yb1_bq25892_node = {
+	.properties = lenovo_yb1_bq25892_props,
+};
+
+static struct i2c_board_info lenovo_yogabook1_board_info = {
+	.type = "bq25892",
+	.addr = 0x6b,
+	.dev_name = "bq25892",
+	.swnode = &lenovo_yb1_bq25892_node,
+	.platform_data = &bq2589x_pdata,
+};
+
+static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev)
+{
+	struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
+	struct i2c_board_info *board_info = NULL;
+	struct cht_wc_i2c_adap *adap;
 	int ret, reg, irq;
 
 	irq = platform_get_irq(pdev, 0);
@@ -379,17 +456,24 @@ static int cht_wc_i2c_adap_i2c_probe(struct platform_device *pdev)
 	if (ret)
 		goto remove_irq_domain;
 
-	/*
-	 * Normally the Whiskey Cove PMIC is paired with a TI bq24292i charger,
-	 * connected to this i2c bus, and a max17047 fuel-gauge and a fusb302
-	 * USB Type-C controller connected to another i2c bus. In this setup
-	 * the max17047 and fusb302 devices are enumerated through an INT33FE
-	 * ACPI device. If this device is present register an i2c-client for
-	 * the TI bq24292i charger.
-	 */
-	if (acpi_dev_present("INT33FE", NULL, -1)) {
-		board_info.irq = adap->client_irq;
-		adap->client = i2c_new_client_device(&adap->adapter, &board_info);
+	switch (pmic->cht_wc_model) {
+	case INTEL_CHT_WC_GPD_WIN_POCKET:
+		board_info = &gpd_win_board_info;
+		break;
+	case INTEL_CHT_WC_XIAOMI_MIPAD2:
+		board_info = &xiaomi_mipad2_board_info;
+		break;
+	case INTEL_CHT_WC_LENOVO_YOGABOOK1:
+		board_info = &lenovo_yogabook1_board_info;
+		break;
+	default:
+		dev_warn(&pdev->dev, "Unknown model, not instantiating charger device\n");
+		break;
+	}
+
+	if (board_info) {
+		board_info->irq = adap->client_irq;
+		adap->client = i2c_new_client_device(&adap->adapter, board_info);
 		if (IS_ERR(adap->client)) {
 			ret = PTR_ERR(adap->client);
 			goto del_adapter;

drivers/mfd/intel_soc_pmic_chtwc.c

@@ -10,6 +10,7 @@
 
 #include <linux/acpi.h>
 #include <linux/delay.h>
+#include <linux/dmi.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
@@ -134,9 +135,44 @@ static const struct regmap_irq_chip cht_wc_regmap_irq_chip = {
 	.num_regs = 1,
 };
 
+static const struct dmi_system_id cht_wc_model_dmi_ids[] = {
+	{
+		/* GPD win / GPD pocket mini laptops */
+		.driver_data = (void *)(long)INTEL_CHT_WC_GPD_WIN_POCKET,
+		/*
+		 * This DMI match may not seem unique, but it is. In the 67000+
+		 * DMI decode dumps from linux-hardware.org only 116 have
+		 * board_vendor set to "AMI Corporation" and of those 116 only
+		 * the GPD win's and pocket's board_name is "Default string".
+		 */
+		.matches = {
+			DMI_EXACT_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+			DMI_EXACT_MATCH(DMI_BOARD_NAME, "Default string"),
+			DMI_EXACT_MATCH(DMI_BOARD_SERIAL, "Default string"),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Default string"),
+		},
+	}, {
+		/* Xiaomi Mi Pad 2 */
+		.driver_data = (void *)(long)INTEL_CHT_WC_XIAOMI_MIPAD2,
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Xiaomi Inc"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Mipad2"),
+		},
+	}, {
+		/* Lenovo Yoga Book X90F / X91F / X91L */
+		.driver_data = (void *)(long)INTEL_CHT_WC_LENOVO_YOGABOOK1,
+		.matches = {
+			/* Non exact match to match all versions */
+			DMI_MATCH(DMI_PRODUCT_NAME, "Lenovo YB1-X9"),
+		},
+	},
+	{ }
+};
+
 static int cht_wc_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
+	const struct dmi_system_id *id;
 	struct intel_soc_pmic *pmic;
 	acpi_status status;
 	unsigned long long hrv;
@@ -160,6 +196,10 @@ static int cht_wc_probe(struct i2c_client *client)
 	if (!pmic)
 		return -ENOMEM;
 
+	id = dmi_first_match(cht_wc_model_dmi_ids);
+	if (id)
+		pmic->cht_wc_model = (long)id->driver_data;
+
 	pmic->irq = client->irq;
 	pmic->dev = dev;
 	i2c_set_clientdata(client, pmic);

drivers/power/supply/bq24190_charger.c

@@ -1206,8 +1206,18 @@ static void bq24190_input_current_limit_work(struct work_struct *work)
 	struct bq24190_dev_info *bdi =
 		container_of(work, struct bq24190_dev_info,
 			     input_current_limit_work.work);
+	union power_supply_propval val;
+	int ret;
 
-	power_supply_set_input_current_limit_from_supplier(bdi->charger);
+	ret = power_supply_get_property_from_supplier(bdi->charger,
+						      POWER_SUPPLY_PROP_CURRENT_MAX,
+						      &val);
+	if (ret)
+		return;
+
+	bq24190_charger_set_property(bdi->charger,
+				     POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+				     &val);
 }
 
 /* Sync the input-current-limit with our parent supply (if we have one) */

drivers/power/supply/power_supply_core.c

@@ -376,46 +376,49 @@ int power_supply_is_system_supplied(void)
 }
 EXPORT_SYMBOL_GPL(power_supply_is_system_supplied);
 
-static int __power_supply_get_supplier_max_current(struct device *dev,
-						   void *data)
+struct psy_get_supplier_prop_data {
+	struct power_supply *psy;
+	enum power_supply_property psp;
+	union power_supply_propval *val;
+};
+
+static int __power_supply_get_supplier_property(struct device *dev, void *_data)
 {
-	union power_supply_propval ret = {0,};
 	struct power_supply *epsy = dev_get_drvdata(dev);
-	struct power_supply *psy = data;
+	struct psy_get_supplier_prop_data *data = _data;
 
-	if (__power_supply_is_supplied_by(epsy, psy))
-		if (!epsy->desc->get_property(epsy,
-					      POWER_SUPPLY_PROP_CURRENT_MAX,
-					      &ret))
-			return ret.intval;
+	if (__power_supply_is_supplied_by(epsy, data->psy))
+		if (!epsy->desc->get_property(epsy, data->psp, data->val))
+			return 1; /* Success */
 
-	return 0;
+	return 0; /* Continue iterating */
 }
 
-int power_supply_set_input_current_limit_from_supplier(struct power_supply *psy)
+int power_supply_get_property_from_supplier(struct power_supply *psy,
+					    enum power_supply_property psp,
+					    union power_supply_propval *val)
 {
-	union power_supply_propval val = {0,};
-	int curr;
-
-	if (!psy->desc->set_property)
-		return -EINVAL;
+	struct psy_get_supplier_prop_data data = {
+		.psy = psy,
+		.psp = psp,
+		.val = val,
+	};
+	int ret;
 
 	/*
 	 * This function is not intended for use with a supply with multiple
-	 * suppliers, we simply pick the first supply to report a non 0
-	 * max-current.
+	 * suppliers, we simply pick the first supply to report the psp.
 	 */
-	curr = class_for_each_device(power_supply_class, NULL, psy,
-				      __power_supply_get_supplier_max_current);
-	if (curr <= 0)
-		return (curr == 0) ? -ENODEV : curr;
-
-	val.intval = curr;
+	ret = class_for_each_device(power_supply_class, NULL, &data,
+				    __power_supply_get_supplier_property);
+	if (ret < 0)
+		return ret;
+	if (ret == 0)
+		return -ENODEV;
 
-	return psy->desc->set_property(psy,
-				POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT, &val);
+	return 0;
 }
-EXPORT_SYMBOL_GPL(power_supply_set_input_current_limit_from_supplier);
+EXPORT_SYMBOL_GPL(power_supply_get_property_from_supplier);
 
 int power_supply_set_battery_charged(struct power_supply *psy)
 {

include/linux/mfd/intel_soc_pmic.h

@@ -13,6 +13,13 @@
 
 #include <linux/regmap.h>
 
+enum intel_cht_wc_models {
+	INTEL_CHT_WC_UNKNOWN,
+	INTEL_CHT_WC_GPD_WIN_POCKET,
+	INTEL_CHT_WC_XIAOMI_MIPAD2,
+	INTEL_CHT_WC_LENOVO_YOGABOOK1,
+};
+
 /**
  * struct intel_soc_pmic - Intel SoC PMIC data
  * @irq: Master interrupt number of the parent PMIC device
@@ -39,6 +46,7 @@ struct intel_soc_pmic {
 	struct regmap_irq_chip_data *irq_chip_data_crit;
 	struct device *dev;
 	struct intel_scu_ipc_dev *scu;
+	enum intel_cht_wc_models cht_wc_model;
 };
 
 int intel_soc_pmic_exec_mipi_pmic_seq_element(u16 i2c_address, u32 reg_address,

include/linux/power/bq25890_charger.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Platform data for the TI bq25890 battery charger driver.
+ */
+
+#ifndef _BQ25890_CHARGER_H_
+#define _BQ25890_CHARGER_H_
+
+struct regulator_init_data;
+
+struct bq25890_platform_data {
+	const struct regulator_init_data *regulator_init_data;
+};
+
+#endif

include/linux/power_supply.h

@@ -597,8 +597,9 @@ power_supply_temp2resist_simple(struct power_supply_resistance_temp_table *table
 				int table_len, int temp);
 extern void power_supply_changed(struct power_supply *psy);
 extern int power_supply_am_i_supplied(struct power_supply *psy);
-extern int power_supply_set_input_current_limit_from_supplier(
-					 struct power_supply *psy);
+int power_supply_get_property_from_supplier(struct power_supply *psy,
+					    enum power_supply_property psp,
+					    union power_supply_propval *val);
 extern int power_supply_set_battery_charged(struct power_supply *psy);
 
 #ifdef CONFIG_POWER_SUPPLY