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power: supply: axp20x_battery: add support for DT battery 

This adds support in X-Powers AXP20X and AXP22X battery driver for a
fixed battery in DT.

It will take the minimum supported voltage by the battery as defined in
the battery DT node and set the V_OFF register to this value, telling
the system to shut down if the supplied power is below this value.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This commit is contained in:
Quentin Schulz 2017-05-11 15:42:17 +02:00 committed by Sebastian Reichel
parent ccce440956
commit f8c91bae0c
1 changed files with 10 additions and 0 deletions
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10
drivers/power/supply/axp20x_battery.c
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@ -433,6 +433,7 @@ 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;
if (!of_device_is_available(pdev->dev.of_node))
return -ENODEV;
@ -484,6 +485,15 @@ static int axp20x_power_probe(struct platform_device *pdev)
return PTR_ERR(axp20x_batt->batt);
}
if (!power_supply_get_battery_info(axp20x_batt->batt, &info)) {
int vmin = info.voltage_min_design_uv;
if (vmin > 0 && axp20x_set_voltage_min_design(axp20x_batt,
vmin))
dev_err(&pdev->dev,
"couldn't set voltage_min_design\n");
}
return 0;
}