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power: supply: axp20x_battery: use data struct for variant specific code
We used to use IDs to select a function or a feature depending on the variant. It's easier to maintain the code by adding data structure storing the few differences between variants so that we don't add a pile of if conditions. Let's use this data structure and update the code to use it. Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org> [updated POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN write property to use the introduced set_max_voltage() callback] Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This commit is contained in:
Quentin Schulz
Sebastian Reichel
parent
d47c1e4b2f
commit
648badd797
@ -53,6 +53,16 @@
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#define AXP20X_V_OFF_MASK GENMASK(2, 0)
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struct axp20x_batt_ps;
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struct axp_data {
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int ccc_scale;
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int ccc_offset;
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bool has_fg_valid;
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int (*get_max_voltage)(struct axp20x_batt_ps *batt, int *val);
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int (*set_max_voltage)(struct axp20x_batt_ps *batt, int val);
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};
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struct axp20x_batt_ps {
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struct regmap *regmap;
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struct power_supply *batt;
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@ -62,7 +72,7 @@ struct axp20x_batt_ps {
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struct iio_channel *batt_v;
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/* Maximum constant charge current */
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unsigned int max_ccc;
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u8 axp_id;
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const struct axp_data *data;
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};
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static int axp20x_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt,
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@ -123,22 +133,6 @@ static int axp22x_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt,
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return 0;
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}
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static void raw_to_constant_charge_current(struct axp20x_batt_ps *axp, int *val)
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{
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if (axp->axp_id == AXP209_ID)
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*val = *val * 100000 + 300000;
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else
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*val = *val * 150000 + 300000;
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}
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static void constant_charge_current_to_raw(struct axp20x_batt_ps *axp, int *val)
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{
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if (axp->axp_id == AXP209_ID)
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*val = (*val - 300000) / 100000;
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else
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*val = (*val - 300000) / 150000;
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}
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static int axp20x_get_constant_charge_current(struct axp20x_batt_ps *axp,
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int *val)
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{
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@ -150,7 +144,7 @@ static int axp20x_get_constant_charge_current(struct axp20x_batt_ps *axp,
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*val &= AXP20X_CHRG_CTRL1_TGT_CURR;
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raw_to_constant_charge_current(axp, val);
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*val = *val * axp->data->ccc_scale + axp->data->ccc_offset;
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return 0;
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}
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@ -269,8 +263,7 @@ static int axp20x_battery_get_prop(struct power_supply *psy,
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if (ret)
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return ret;
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if (axp20x_batt->axp_id == AXP221_ID &&
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!(reg & AXP22X_FG_VALID))
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if (axp20x_batt->data->has_fg_valid && !(reg & AXP22X_FG_VALID))
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return -EINVAL;
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/*
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@ -281,11 +274,8 @@ static int axp20x_battery_get_prop(struct power_supply *psy,
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break;
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case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
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if (axp20x_batt->axp_id == AXP209_ID)
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return axp20x_battery_get_max_voltage(axp20x_batt,
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&val->intval);
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return axp22x_battery_get_max_voltage(axp20x_batt,
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&val->intval);
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return axp20x_batt->data->get_max_voltage(axp20x_batt,
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&val->intval);
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case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
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ret = regmap_read(axp20x_batt->regmap, AXP20X_V_OFF, ®);
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@ -312,6 +302,32 @@ static int axp20x_battery_get_prop(struct power_supply *psy,
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return 0;
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}
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static int axp22x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt,
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int val)
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{
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switch (val) {
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case 4100000:
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val = AXP20X_CHRG_CTRL1_TGT_4_1V;
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break;
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case 4200000:
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val = AXP20X_CHRG_CTRL1_TGT_4_2V;
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break;
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default:
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/*
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* AXP20x max voltage can be set to 4.36V and AXP22X max voltage
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* can be set to 4.22V and 4.24V, but these voltages are too
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* high for Lithium based batteries (AXP PMICs are supposed to
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* be used with these kinds of battery).
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*/
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return -EINVAL;
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}
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return regmap_update_bits(axp20x_batt->regmap, AXP20X_CHRG_CTRL1,
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AXP20X_CHRG_CTRL1_TGT_VOLT, val);
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}
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static int axp20x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt,
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int val)
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{
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@ -321,9 +337,6 @@ static int axp20x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt,
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break;
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case 4150000:
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if (axp20x_batt->axp_id == AXP221_ID)
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return -EINVAL;
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val = AXP20X_CHRG_CTRL1_TGT_4_15V;
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break;
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@ -351,7 +364,8 @@ static int axp20x_set_constant_charge_current(struct axp20x_batt_ps *axp_batt,
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if (charge_current > axp_batt->max_ccc)
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return -EINVAL;
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constant_charge_current_to_raw(axp_batt, &charge_current);
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charge_current = (charge_current - axp_batt->data->ccc_offset) /
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axp_batt->data->ccc_scale;
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if (charge_current > AXP20X_CHRG_CTRL1_TGT_CURR || charge_current < 0)
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return -EINVAL;
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@ -365,12 +379,14 @@ static int axp20x_set_max_constant_charge_current(struct axp20x_batt_ps *axp,
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{
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bool lower_max = false;
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constant_charge_current_to_raw(axp, &charge_current);
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charge_current = (charge_current - axp->data->ccc_offset) /
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axp->data->ccc_scale;
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if (charge_current > AXP20X_CHRG_CTRL1_TGT_CURR || charge_current < 0)
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return -EINVAL;
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raw_to_constant_charge_current(axp, &charge_current);
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charge_current = charge_current * axp->data->ccc_scale +
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axp->data->ccc_offset;
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if (charge_current > axp->max_ccc)
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dev_warn(axp->dev,
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@ -413,7 +429,7 @@ static int axp20x_battery_set_prop(struct power_supply *psy,
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return axp20x_set_voltage_min_design(axp20x_batt, val->intval);
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case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN:
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return axp20x_battery_set_max_voltage(axp20x_batt, val->intval);
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return axp20x_batt->data->set_max_voltage(axp20x_batt, val->intval);
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case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
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return axp20x_set_constant_charge_current(axp20x_batt,
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@ -460,13 +476,28 @@ static const struct power_supply_desc axp20x_batt_ps_desc = {
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.set_property = axp20x_battery_set_prop,
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};
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static const struct axp_data axp209_data = {
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.ccc_scale = 100000,
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.ccc_offset = 300000,
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.get_max_voltage = axp20x_battery_get_max_voltage,
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.set_max_voltage = axp20x_battery_set_max_voltage,
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};
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static const struct axp_data axp221_data = {
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.ccc_scale = 150000,
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.ccc_offset = 300000,
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.has_fg_valid = true,
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.get_max_voltage = axp22x_battery_get_max_voltage,
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.set_max_voltage = axp22x_battery_set_max_voltage,
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};
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static const struct of_device_id axp20x_battery_ps_id[] = {
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{
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.compatible = "x-powers,axp209-battery-power-supply",
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.data = (void *)AXP209_ID,
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.data = (void *)&axp209_data,
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}, {
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.compatible = "x-powers,axp221-battery-power-supply",
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.data = (void *)AXP221_ID,
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.data = (void *)&axp221_data,
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}, { /* sentinel */ },
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};
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MODULE_DEVICE_TABLE(of, axp20x_battery_ps_id);
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@ -476,6 +507,7 @@ static int axp20x_power_probe(struct platform_device *pdev)
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struct axp20x_batt_ps *axp20x_batt;
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struct power_supply_config psy_cfg = {};
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struct power_supply_battery_info info;
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struct device *dev = &pdev->dev;
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if (!of_device_is_available(pdev->dev.of_node))
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return -ENODEV;
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@ -516,7 +548,7 @@ static int axp20x_power_probe(struct platform_device *pdev)
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psy_cfg.drv_data = axp20x_batt;
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psy_cfg.of_node = pdev->dev.of_node;
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axp20x_batt->axp_id = (uintptr_t)of_device_get_match_data(&pdev->dev);
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axp20x_batt->data = (struct axp_data *)of_device_get_match_data(dev);
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axp20x_batt->batt = devm_power_supply_register(&pdev->dev,
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&axp20x_batt_ps_desc,
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