Chris Morgan f1cabe7553 power: supply: rk817: Fix low SOC bugs ... [ Upstream commit baba1315a7 ] When the SOC approaches zero, an integer overflows in the columb counter causing the driver to react poorly. This makes the driver think it's at (above) the fully charged capacity when in fact it's zero. It would then write this full capacity to NVRAM which would be used on boot if the device remained off for less than 5 hours and not plugged in. This can be fixed and guarded against by doing the following: - Changing the type of tmp in rk817_read_or_set_full_charge_on_boot() to be an int instead of a u32. That way we can account for negative numbers. - Guard against negative values for the full charge on boot by setting the charge to 0 if the system charge reports less than 0. - Catch scenarios where the battery voltage is below the design minimum voltage and set the system SOC to 0 at that time and update the columb counter with a charge level of 0. - Change the off time value from 5 hours to 30 minutes before we recalculate the current capacity based on the OCV tables. These changes allow the driver to operate better at low voltage/low capacity conditions. Fixes: 3268a4d9b0 ("power: supply: rk817: Fix unsigned comparison with less than zero") Fixes: 11cb8da018 ("power: supply: Add charger driver for Rockchip RK817") Signed-off-by: Chris Morgan <macromorgan@hotmail.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-05-11 23:11:27 +09:00
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reset	power: reset: qcom-pon: add support for qcom,pmk8350-pon compatible string	2022-09-11 12:09:10 +02:00
supply	power: supply: rk817: Fix low SOC bugs	2023-05-11 23:11:27 +09:00
Kconfig	PM: AVS: Drop the avs directory and the corresponding Kconfig	2020-10-22 18:39:32 +02:00
Makefile	PM: AVS: Drop the avs directory and the corresponding Kconfig	2020-10-22 18:39:32 +02:00