From 648badd797c762a713b48afc3b67d56abdd0073b Mon Sep 17 00:00:00 2001 From: Quentin Schulz Date: Wed, 28 Feb 2018 11:35:58 +0100 Subject: 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 Reviewed-by: Chen-Yu Tsai [updated POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN write property to use the introduced set_max_voltage() callback] Signed-off-by: Sebastian Reichel --- drivers/power/supply/axp20x_battery.c | 102 ++++++++++++++++++++++------------ 1 file changed, 67 insertions(+), 35 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/supply/axp20x_battery.c b/drivers/power/supply/axp20x_battery.c index 7494f0f0eadb..738470077f1f 100644 --- a/drivers/power/supply/axp20x_battery.c +++ b/drivers/power/supply/axp20x_battery.c @@ -53,6 +53,16 @@ #define AXP20X_V_OFF_MASK GENMASK(2, 0) +struct axp20x_batt_ps; + +struct axp_data { + int ccc_scale; + int ccc_offset; + bool has_fg_valid; + int (*get_max_voltage)(struct axp20x_batt_ps *batt, int *val); + int (*set_max_voltage)(struct axp20x_batt_ps *batt, int val); +}; + struct axp20x_batt_ps { struct regmap *regmap; struct power_supply *batt; @@ -62,7 +72,7 @@ struct axp20x_batt_ps { struct iio_channel *batt_v; /* Maximum constant charge current */ unsigned int max_ccc; - u8 axp_id; + const struct axp_data *data; }; static int axp20x_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt, @@ -123,22 +133,6 @@ static int axp22x_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt, return 0; } -static void raw_to_constant_charge_current(struct axp20x_batt_ps *axp, int *val) -{ - if (axp->axp_id == AXP209_ID) - *val = *val * 100000 + 300000; - else - *val = *val * 150000 + 300000; -} - -static void constant_charge_current_to_raw(struct axp20x_batt_ps *axp, int *val) -{ - if (axp->axp_id == AXP209_ID) - *val = (*val - 300000) / 100000; - else - *val = (*val - 300000) / 150000; -} - static int axp20x_get_constant_charge_current(struct axp20x_batt_ps *axp, int *val) { @@ -150,7 +144,7 @@ static int axp20x_get_constant_charge_current(struct axp20x_batt_ps *axp, *val &= AXP20X_CHRG_CTRL1_TGT_CURR; - raw_to_constant_charge_current(axp, val); + *val = *val * axp->data->ccc_scale + axp->data->ccc_offset; return 0; } @@ -269,8 +263,7 @@ static int axp20x_battery_get_prop(struct power_supply *psy, if (ret) return ret; - if (axp20x_batt->axp_id == AXP221_ID && - !(reg & AXP22X_FG_VALID)) + if (axp20x_batt->data->has_fg_valid && !(reg & AXP22X_FG_VALID)) return -EINVAL; /* @@ -281,11 +274,8 @@ static int axp20x_battery_get_prop(struct power_supply *psy, break; case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: - if (axp20x_batt->axp_id == AXP209_ID) - return axp20x_battery_get_max_voltage(axp20x_batt, - &val->intval); - return axp22x_battery_get_max_voltage(axp20x_batt, - &val->intval); + return axp20x_batt->data->get_max_voltage(axp20x_batt, + &val->intval); case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: ret = regmap_read(axp20x_batt->regmap, AXP20X_V_OFF, ®); @@ -312,6 +302,32 @@ static int axp20x_battery_get_prop(struct power_supply *psy, return 0; } +static int axp22x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt, + int val) +{ + switch (val) { + case 4100000: + val = AXP20X_CHRG_CTRL1_TGT_4_1V; + break; + + case 4200000: + val = AXP20X_CHRG_CTRL1_TGT_4_2V; + break; + + default: + /* + * AXP20x max voltage can be set to 4.36V and AXP22X max voltage + * can be set to 4.22V and 4.24V, but these voltages are too + * high for Lithium based batteries (AXP PMICs are supposed to + * be used with these kinds of battery). + */ + return -EINVAL; + } + + return regmap_update_bits(axp20x_batt->regmap, AXP20X_CHRG_CTRL1, + AXP20X_CHRG_CTRL1_TGT_VOLT, val); +} + static int axp20x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt, int val) { @@ -321,9 +337,6 @@ static int axp20x_battery_set_max_voltage(struct axp20x_batt_ps *axp20x_batt, break; case 4150000: - if (axp20x_batt->axp_id == AXP221_ID) - return -EINVAL; - val = AXP20X_CHRG_CTRL1_TGT_4_15V; break; @@ -351,7 +364,8 @@ static int axp20x_set_constant_charge_current(struct axp20x_batt_ps *axp_batt, if (charge_current > axp_batt->max_ccc) return -EINVAL; - constant_charge_current_to_raw(axp_batt, &charge_current); + charge_current = (charge_current - axp_batt->data->ccc_offset) / + axp_batt->data->ccc_scale; if (charge_current > AXP20X_CHRG_CTRL1_TGT_CURR || charge_current < 0) return -EINVAL; @@ -365,12 +379,14 @@ static int axp20x_set_max_constant_charge_current(struct axp20x_batt_ps *axp, { bool lower_max = false; - constant_charge_current_to_raw(axp, &charge_current); + charge_current = (charge_current - axp->data->ccc_offset) / + axp->data->ccc_scale; if (charge_current > AXP20X_CHRG_CTRL1_TGT_CURR || charge_current < 0) return -EINVAL; - raw_to_constant_charge_current(axp, &charge_current); + charge_current = charge_current * axp->data->ccc_scale + + axp->data->ccc_offset; if (charge_current > axp->max_ccc) dev_warn(axp->dev, @@ -413,7 +429,7 @@ static int axp20x_battery_set_prop(struct power_supply *psy, return axp20x_set_voltage_min_design(axp20x_batt, val->intval); case POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN: - return axp20x_battery_set_max_voltage(axp20x_batt, val->intval); + return axp20x_batt->data->set_max_voltage(axp20x_batt, val->intval); case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT: return axp20x_set_constant_charge_current(axp20x_batt, @@ -460,13 +476,28 @@ static const struct power_supply_desc axp20x_batt_ps_desc = { .set_property = axp20x_battery_set_prop, }; +static const struct axp_data axp209_data = { + .ccc_scale = 100000, + .ccc_offset = 300000, + .get_max_voltage = axp20x_battery_get_max_voltage, + .set_max_voltage = axp20x_battery_set_max_voltage, +}; + +static const struct axp_data axp221_data = { + .ccc_scale = 150000, + .ccc_offset = 300000, + .has_fg_valid = true, + .get_max_voltage = axp22x_battery_get_max_voltage, + .set_max_voltage = axp22x_battery_set_max_voltage, +}; + static const struct of_device_id axp20x_battery_ps_id[] = { { .compatible = "x-powers,axp209-battery-power-supply", - .data = (void *)AXP209_ID, + .data = (void *)&axp209_data, }, { .compatible = "x-powers,axp221-battery-power-supply", - .data = (void *)AXP221_ID, + .data = (void *)&axp221_data, }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, axp20x_battery_ps_id); @@ -476,6 +507,7 @@ static int axp20x_power_probe(struct platform_device *pdev) struct axp20x_batt_ps *axp20x_batt; struct power_supply_config psy_cfg = {}; struct power_supply_battery_info info; + struct device *dev = &pdev->dev; if (!of_device_is_available(pdev->dev.of_node)) return -ENODEV; @@ -516,7 +548,7 @@ static int axp20x_power_probe(struct platform_device *pdev) psy_cfg.drv_data = axp20x_batt; psy_cfg.of_node = pdev->dev.of_node; - axp20x_batt->axp_id = (uintptr_t)of_device_get_match_data(&pdev->dev); + axp20x_batt->data = (struct axp_data *)of_device_get_match_data(dev); axp20x_batt->batt = devm_power_supply_register(&pdev->dev, &axp20x_batt_ps_desc, -- cgit v1.2.3-59-g8ed1b