linux-kernel - [PATCH v2 17/17] power: axp20x_battery: Add support for AXP192

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Message-Id: <20220607155324.118102-18-aidanmacdonald.0x0@gmail.com>
Date:   Tue,  7 Jun 2022 16:53:24 +0100
From:   Aidan MacDonald <aidanmacdonald.0x0@...il.com>
To:     linus.walleij@...aro.org, brgl@...ev.pl, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, wens@...e.org, jic23@...nel.org,
        lee.jones@...aro.org, sre@...nel.org, broonie@...nel.org,
        gregkh@...uxfoundation.org, lgirdwood@...il.com
Cc:     lars@...afoo.de, rafael@...nel.org, quic_gurus@...cinc.com,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: [PATCH v2 17/17] power: axp20x_battery: Add support for AXP192

The AXP192 has a battery charger similar to other X-Powers PMICs,
but unlike the other supported devices, it does not have a fuel
gauge and can't report battery capacity directly.

Signed-off-by: Aidan MacDonald <aidanmacdonald.0x0@...il.com>
---
 drivers/power/supply/axp20x_battery.c | 49 +++++++++++++++++++++++++--
 1 file changed, 46 insertions(+), 3 deletions(-)

diff --git a/drivers/power/supply/axp20x_battery.c b/drivers/power/supply/axp20x_battery.c
index e9547e2d7c48..3fa2faa6f0f8 100644
--- a/drivers/power/supply/axp20x_battery.c
+++ b/drivers/power/supply/axp20x_battery.c
@@ -538,6 +538,19 @@ static int axp20x_battery_set_prop(struct power_supply *psy,
 	}
 }
 
+static enum power_supply_property axp192_battery_props[] = {
+	POWER_SUPPLY_PROP_PRESENT,
+	POWER_SUPPLY_PROP_ONLINE,
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
+	POWER_SUPPLY_PROP_CURRENT_NOW,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT,
+	POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX,
+	POWER_SUPPLY_PROP_HEALTH,
+	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
+	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
+};
+
 static enum power_supply_property axp20x_battery_props[] = {
 	POWER_SUPPLY_PROP_PRESENT,
 	POWER_SUPPLY_PROP_ONLINE,
@@ -562,6 +575,16 @@ static int axp20x_battery_prop_writeable(struct power_supply *psy,
 	       psp == POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT_MAX;
 }
 
+static const struct power_supply_desc axp192_batt_ps_desc = {
+	.name = "axp192-battery",
+	.type = POWER_SUPPLY_TYPE_BATTERY,
+	.properties = axp192_battery_props,
+	.num_properties = ARRAY_SIZE(axp192_battery_props),
+	.property_is_writeable = axp20x_battery_prop_writeable,
+	.get_property = axp20x_battery_get_prop,
+	.set_property = axp20x_battery_set_prop,
+};
+
 static const struct power_supply_desc axp20x_batt_ps_desc = {
 	.name = "axp20x-battery",
 	.type = POWER_SUPPLY_TYPE_BATTERY,
@@ -572,6 +595,19 @@ static const struct power_supply_desc axp20x_batt_ps_desc = {
 	.set_property = axp20x_battery_set_prop,
 };
 
+static const int axp192_ccc_table[AXP20X_CHRG_CTRL1_TGT_CURR+1] = {
+	100000,  190000,  280000,  360000,
+	450000,  550000,  630000,  700000,
+	780000,  880000,  960000,  1000000,
+	1080000, 1160000, 1240000, 1320000,
+};
+
+static const struct axp_data axp192_data = {
+	.ccc_table = axp192_ccc_table,
+	.get_max_voltage = axp20x_battery_get_max_voltage,
+	.set_max_voltage = axp20x_battery_set_max_voltage,
+};
+
 static const struct axp_data axp209_data = {
 	.ccc_scale = 100000,
 	.ccc_offset = 300000,
@@ -600,6 +636,9 @@ static const struct axp_data axp813_data = {
 
 static const struct of_device_id axp20x_battery_ps_id[] = {
 	{
+		.compatible = "x-powers,axp192-battery-power-supply",
+		.data = (void *)&axp192_data,
+	}, {
 		.compatible = "x-powers,axp209-battery-power-supply",
 		.data = (void *)&axp209_data,
 	}, {
@@ -617,6 +656,7 @@ 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;
+	const struct power_supply_desc *ps_desc;
 	struct device *dev = &pdev->dev;
 
 	if (!of_device_is_available(pdev->dev.of_node))
@@ -660,9 +700,12 @@ static int axp20x_power_probe(struct platform_device *pdev)
 
 	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,
-						       &psy_cfg);
+	if (!axp20x_batt->data->has_fg)
+		ps_desc = &axp192_batt_ps_desc;
+	else
+		ps_desc = &axp20x_batt_ps_desc;
+
+	axp20x_batt->batt = devm_power_supply_register(&pdev->dev, ps_desc, &psy_cfg);
 	if (IS_ERR(axp20x_batt->batt)) {
 		dev_err(&pdev->dev, "failed to register power supply: %ld\n",
 			PTR_ERR(axp20x_batt->batt));
-- 
2.35.1