power: supply: axp20x_battery: Make iio and battery config per device

Move the configuration of battery specific information and available
iio channels from the probe function to a device specific routine,
allowing us to use this driver for devices with slightly different
configurations (such as the AXP717).

Signed-off-by: Chris Morgan <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Sebastian Reichel <[email protected]>

Author: macromorgan

drivers/power/supply/axp20x_battery.c

@@ -58,11 +58,19 @@
 struct axp20x_batt_ps;
 
 struct axp_data {
-	int	ccc_scale;
-	int	ccc_offset;
-	bool	has_fg_valid;
+	int		ccc_scale;
+	int		ccc_offset;
+	unsigned int	ccc_reg;
+	unsigned int	ccc_mask;
+	bool		has_fg_valid;
+	const struct	power_supply_desc *bat_ps_desc;
 	int	(*get_max_voltage)(struct axp20x_batt_ps *batt, int *val);
 	int	(*set_max_voltage)(struct axp20x_batt_ps *batt, int val);
+	int	(*cfg_iio_chan)(struct platform_device *pdev,
+				struct axp20x_batt_ps *axp_batt);
+	void	(*set_bat_info)(struct platform_device *pdev,
+				struct axp20x_batt_ps *axp_batt,
+				struct power_supply_battery_info *info);
 };
 
 struct axp20x_batt_ps {
@@ -508,7 +516,7 @@ static int axp20x_battery_prop_writeable(struct power_supply *psy,
 	       psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX;
 }
 
-static const struct power_supply_desc axp20x_batt_ps_desc = {
+static const struct power_supply_desc axp209_batt_ps_desc = {
 	.name = "axp20x-battery",
 	.type = POWER_SUPPLY_TYPE_BATTERY,
 	.properties = axp20x_battery_props,
@@ -518,27 +526,94 @@ static const struct power_supply_desc axp20x_batt_ps_desc = {
 	.set_property = axp20x_battery_set_prop,
 };
 
+static int axp209_bat_cfg_iio_channels(struct platform_device *pdev,
+				       struct axp20x_batt_ps *axp_batt)
+{
+	axp_batt->batt_v = devm_iio_channel_get(&pdev->dev, "batt_v");
+	if (IS_ERR(axp_batt->batt_v)) {
+		if (PTR_ERR(axp_batt->batt_v) == -ENODEV)
+			return -EPROBE_DEFER;
+		return PTR_ERR(axp_batt->batt_v);
+	}
+
+	axp_batt->batt_chrg_i = devm_iio_channel_get(&pdev->dev,
+							"batt_chrg_i");
+	if (IS_ERR(axp_batt->batt_chrg_i)) {
+		if (PTR_ERR(axp_batt->batt_chrg_i) == -ENODEV)
+			return -EPROBE_DEFER;
+		return PTR_ERR(axp_batt->batt_chrg_i);
+	}
+
+	axp_batt->batt_dischrg_i = devm_iio_channel_get(&pdev->dev,
+							   "batt_dischrg_i");
+	if (IS_ERR(axp_batt->batt_dischrg_i)) {
+		if (PTR_ERR(axp_batt->batt_dischrg_i) == -ENODEV)
+			return -EPROBE_DEFER;
+		return PTR_ERR(axp_batt->batt_dischrg_i);
+	}
+
+	return 0;
+}
+
+static void axp209_set_battery_info(struct platform_device *pdev,
+				    struct axp20x_batt_ps *axp_batt,
+				    struct power_supply_battery_info *info)
+{
+	int vmin = info->voltage_min_design_uv;
+	int ccc = info->constant_charge_current_max_ua;
+
+	if (vmin > 0 && axp20x_set_voltage_min_design(axp_batt, vmin))
+		dev_err(&pdev->dev,
+			"couldn't set voltage_min_design\n");
+
+	/* Set max to unverified value to be able to set CCC */
+	axp_batt->max_ccc = ccc;
+
+	if (ccc <= 0 || axp20x_set_constant_charge_current(axp_batt, ccc)) {
+		dev_err(&pdev->dev,
+			"couldn't set ccc from DT: fallback to min value\n");
+		ccc = 300000;
+		axp_batt->max_ccc = ccc;
+		axp20x_set_constant_charge_current(axp_batt, ccc);
+	}
+}
+
 static const struct axp_data axp209_data = {
 	.ccc_scale = 100000,
 	.ccc_offset = 300000,
+	.ccc_reg = AXP20X_CHRG_CTRL1,
+	.ccc_mask = AXP20X_CHRG_CTRL1_TGT_CURR,
+	.bat_ps_desc = &axp209_batt_ps_desc,
 	.get_max_voltage = axp20x_battery_get_max_voltage,
 	.set_max_voltage = axp20x_battery_set_max_voltage,
+	.cfg_iio_chan = axp209_bat_cfg_iio_channels,
+	.set_bat_info = axp209_set_battery_info,
 };
 
 static const struct axp_data axp221_data = {
 	.ccc_scale = 150000,
 	.ccc_offset = 300000,
+	.ccc_reg = AXP20X_CHRG_CTRL1,
+	.ccc_mask = AXP20X_CHRG_CTRL1_TGT_CURR,
 	.has_fg_valid = true,
+	.bat_ps_desc = &axp209_batt_ps_desc,
 	.get_max_voltage = axp22x_battery_get_max_voltage,
 	.set_max_voltage = axp22x_battery_set_max_voltage,
+	.cfg_iio_chan = axp209_bat_cfg_iio_channels,
+	.set_bat_info = axp209_set_battery_info,
 };
 
 static const struct axp_data axp813_data = {
 	.ccc_scale = 200000,
 	.ccc_offset = 200000,
+	.ccc_reg = AXP20X_CHRG_CTRL1,
+	.ccc_mask = AXP20X_CHRG_CTRL1_TGT_CURR,
 	.has_fg_valid = true,
+	.bat_ps_desc = &axp209_batt_ps_desc,
 	.get_max_voltage = axp813_battery_get_max_voltage,
 	.set_max_voltage = axp20x_battery_set_max_voltage,
+	.cfg_iio_chan = axp209_bat_cfg_iio_channels,
+	.set_bat_info = axp209_set_battery_info,
 };
 
 static const struct of_device_id axp20x_battery_ps_id[] = {
@@ -561,6 +636,7 @@ static int axp20x_power_probe(struct platform_device *pdev)
 	struct power_supply_config psy_cfg = {};
 	struct power_supply_battery_info *info;
 	struct device *dev = &pdev->dev;
+	int ret;
 
 	if (!of_device_is_available(pdev->dev.of_node))
 		return -ENODEV;
@@ -572,29 +648,6 @@ static int axp20x_power_probe(struct platform_device *pdev)
 
 	axp20x_batt->dev = &pdev->dev;
 
-	axp20x_batt->batt_v = devm_iio_channel_get(&pdev->dev, "batt_v");
-	if (IS_ERR(axp20x_batt->batt_v)) {
-		if (PTR_ERR(axp20x_batt->batt_v) == -ENODEV)
-			return -EPROBE_DEFER;
-		return PTR_ERR(axp20x_batt->batt_v);
-	}
-
-	axp20x_batt->batt_chrg_i = devm_iio_channel_get(&pdev->dev,
-							"batt_chrg_i");
-	if (IS_ERR(axp20x_batt->batt_chrg_i)) {
-		if (PTR_ERR(axp20x_batt->batt_chrg_i) == -ENODEV)
-			return -EPROBE_DEFER;
-		return PTR_ERR(axp20x_batt->batt_chrg_i);
-	}
-
-	axp20x_batt->batt_dischrg_i = devm_iio_channel_get(&pdev->dev,
-							   "batt_dischrg_i");
-	if (IS_ERR(axp20x_batt->batt_dischrg_i)) {
-		if (PTR_ERR(axp20x_batt->batt_dischrg_i) == -ENODEV)
-			return -EPROBE_DEFER;
-		return PTR_ERR(axp20x_batt->batt_dischrg_i);
-	}
-
 	axp20x_batt->regmap = dev_get_regmap(pdev->dev.parent, NULL);
 	platform_set_drvdata(pdev, axp20x_batt);
 
@@ -603,8 +656,12 @@ static int axp20x_power_probe(struct platform_device *pdev)
 
 	axp20x_batt->data = (struct axp_data *)of_device_get_match_data(dev);
 
+	ret = axp20x_batt->data->cfg_iio_chan(pdev, axp20x_batt);
+	if (ret)
+		return ret;
+
 	axp20x_batt->batt = devm_power_supply_register(&pdev->dev,
-						       &axp20x_batt_ps_desc,
+						       axp20x_batt->data->bat_ps_desc,
 						       &psy_cfg);
 	if (IS_ERR(axp20x_batt->batt)) {
 		dev_err(&pdev->dev, "failed to register power supply: %ld\n",
@@ -613,33 +670,15 @@ static int axp20x_power_probe(struct platform_device *pdev)
 	}
 
 	if (!power_supply_get_battery_info(axp20x_batt->batt, &info)) {
-		int vmin = info->voltage_min_design_uv;
-		int ccc = info->constant_charge_current_max_ua;
-
-		if (vmin > 0 && axp20x_set_voltage_min_design(axp20x_batt,
-							      vmin))
-			dev_err(&pdev->dev,
-				"couldn't set voltage_min_design\n");
-
-		/* Set max to unverified value to be able to set CCC */
-		axp20x_batt->max_ccc = ccc;
-
-		if (ccc <= 0 || axp20x_set_constant_charge_current(axp20x_batt,
-								   ccc)) {
-			dev_err(&pdev->dev,
-				"couldn't set constant charge current from DT: fallback to minimum value\n");
-			ccc = 300000;
-			axp20x_batt->max_ccc = ccc;
-			axp20x_set_constant_charge_current(axp20x_batt, ccc);
-		}
+		axp20x_batt->data->set_bat_info(pdev, axp20x_batt, info);
+		power_supply_put_battery_info(axp20x_batt->batt, info);
 	}
 
 	/*
 	 * Update max CCC to a valid value if battery info is present or set it
 	 * to current register value by default.
 	 */
-	axp20x_get_constant_charge_current(axp20x_batt,
-					   &axp20x_batt->max_ccc);
+	axp20x_get_constant_charge_current(axp20x_batt, &axp20x_batt->max_ccc);
 
 	return 0;
 }