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| Filename | Latest commit message | Latest commit date |
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2b5a4b4bf2
Relying on the (dis)charge current reporting for reporting FULL back to userspace does not work really well and often leads to the reported status getting stuck at e.g. 98/99% (the fuelgauge is not perfect) for hours. What happens is that when the battery is full the axp288 keeps charging it with a very low current. Until it is really really full and once really really full, some inaccuracies in the adc lead to it then sometimes reporting a small discharging rate, even though an external pwr source is used. So we end up with a status of "charging" for hours after the battery is actually already full and sometimes this then flip-flops to discharging. This commit fixes this by first checking if a valid Vbus is present and if it is present using the fuel-gauge's reported percentage to check for a full battery. This commit also changes how get_status() determines if the battery is charging or discharging when not reporting it as full. We still use the current direction for this, but instead of reading 4 extra registers for this (2 16 bit regs), simplify things by using the current-direction bit in the power-status register, which already gets read anyways. This also reduces the amount of i2c reads to 1 when on battery and 2 when a valid Vbus is present. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.