[PATCH V2 03/15] power: supply: axp20x_battery: Make iio and battery config per device

Chris Morgan
2024-08-02T19:22:52Z

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 <macromorgan@hotmail.com>
---
drivers/power/supply/axp20x_battery.c | 137 +++++++++++++++++---------
1 file changed, 88 insertions(+), 49 deletions(-)

diff --git a/drivers/power/supply/axp20x_battery.c b/drivers/power/supply/axp20x_battery.c
index 7520b599eb3d..c903c588b361 100644
--- a/drivers/power/supply/axp20x_battery.c
+++ b/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;
}
--
2.34.1