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path: root/drivers/power/supply/mm8013.c
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2024-03-06power: supply: mm8013: fix "not charging" detectionThomas Weißschuh1-11/+2
The charge_behaviours property is meant as a control-knob that can be changed by the user. Page 23 of [0] which documents the flag CHG_INH as follows: CHG_INH : Charge Inhibit When the current is more than or equal to charge threshold current, charge inhibit temperature (upper/lower limit) :1 charge permission temperature or the current is less than charge threshold current :0 So this is pure read-only information which is better represented as POWER_SUPPLY_STATUS_NOT_CHARGING. [0] https://product.minebeamitsumi.com/en/product/category/ics/battery/fuel_gauge/parts/download/__icsFiles/afieldfile/2023/07/12/1_download_01_12.pdf Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20240303-power_supply-charge_behaviour_prop-v2-1-8ebb0a7c2409@weissschuh.net Fixes: e39257cde7e8 ("power: supply: mm8013: Add more properties") Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2023-09-30power: supply: mm8013: Fix an error checking issue in mm8013_checkdevice()Dan Carpenter1-1/+1
There is a missing "ret = " assignment so this checks the same "ret" value twice. Fixes: c75f4bf6800b ("power: supply: Introduce MM8013 fuel gauge driver") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/c46b4408-bf1d-408d-9e6b-16b0ad272532@moroto.mountain Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2023-09-24power: supply: mm8013: Fix error code in mm8013_probe()Harshit Mogalapalli1-1/+3
The value of ret is zero when passed to dev_error_probe(), we are passing zero to dev_err_probe() is a success which is incorrect. Fix this by getting the error code using PTR_ERR(). Fixes: c75f4bf6800b ("power: supply: Introduce MM8013 fuel gauge driver") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <error27@gmail.com> Closes: https://lore.kernel.org/r/202309190838.eu8WS6sz-lkp@intel.com/ Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com> Link: https://lore.kernel.org/r/20230923114807.2829188-1-harshit.m.mogalapalli@oracle.com Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2023-09-17power: supply: mm8013: Add more propertiesKonrad Dybcio1-2/+43
While scanning the internet for MM8013 PDFs, I found one for a different IC from Mitsumi, MM8118 at [1]. It turned out however, that when you search through the PDF, the MM8118 text has an invsible text layer containing "MM8013" underneath.. With some elbow grease, I was able to confirm that most of the registers match between the two ICs. Based on that finding, introduce live battery voltage readout, hw-decided charge behavior readout and max current readout. Also, expand the existing POWER_SUPPLY_HEALTH reporting. [1] https://product.minebeamitsumi.com/en/product/category/ics/battery/fuel_gauge/parts/download/__icsFiles/afieldfile/2023/07/12/1_download_01_12.pdf Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230916-topic-mm8013_2-v1-1-02495e07fca0@linaro.org Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
2023-09-15power: supply: Introduce MM8013 fuel gauge driverKonrad Dybcio1-0/+274
Add a driver for the Mitsumi MM8013 fuel gauge. The driver is a vastly cleaned up and improved version of the one that shipped in some obscure Lenovo downstream kernel [1], with some register definitions borrowed from ChromeOS EC platform code [2]. [1] https://github.com/adazem009/kernel_lenovo_bengal/commit/b6b346427a871715709bd22aae449b9383f3b66b [2] https://chromium.googlesource.com/chromiumos/platform/ec/+/master/driver/battery/mm8013.h Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org> Link: https://lore.kernel.org/r/20230621-topic-mm8013-v4-3-975aecd173ed@linaro.org Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>