Commit Graph

3 Commits

Author SHA1 Message Date
Quentin Schulz
c800384490 power: supply: axp20x_battery: add DT support for battery max constant charge current
This adds the ability to set the maximum constant charge current,
supported by the battery, delivered by this battery power supply to the
battery.

The maximum constant charge current set in DT will also set the default
constant charge current supplied by this supply.

The actual user can modify the constant charge current within the range
of 0 to maximum constant charge current via sysfs.
The user can also modify the maximum constant charge current to widen
the range of possible constant charge current. While this seems quite
risky, a message is printed on the console to warn the user this might
damage the battery. The reason for letting the user change the maximum
constant charge current is for letting users change the battery and
thus, let them adjust the maximum constant charge current according to
what the battery can support.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2017-06-08 17:57:53 +02:00
Quentin Schulz
f8c91bae0c 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>
2017-06-08 17:57:51 +02:00
Quentin Schulz
46c202b5f2 power: supply: add battery driver for AXP20X and AXP22X PMICs
The X-Powers AXP20X and AXP22X PMICs can have a battery as power supply.

This patch adds the battery power supply driver to get various data from
the PMIC, such as the battery status (charging, discharging, full,
dead), current max limit, current current, battery capacity (in
percentage), voltage max and min limits, current voltage and battery
capacity (in Ah).

This battery driver uses the AXP20X/AXP22X ADC driver as PMIC data
provider.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
2017-05-01 11:52:23 +02:00