From: Hans de Goede Date: Tue, 1 Feb 2022 13:06:52 +0000 (+0100) Subject: power: supply: bq25890: Add support to read back the settings from the chip X-Git-Tag: v6.1-rc5~1723^2~62^2~14 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=40428bd4675762f2da5e81b5b31c0425f9bd0de2;p=platform%2Fkernel%2Flinux-starfive.git power: supply: bq25890: Add support to read back the settings from the chip On most x86/ACPI devices there is no devicetree to supply the necessary init-data. Instead the firmware already fully initializes the bq25890 charger at boot. To support this, add support for reading back the settings from the chip through a new "linux,read-back-settings" boolean. So far this new property is only used on x86/ACPI (non devicetree) devs, IOW it is not used in actual devicetree files. The devicetree-bindings maintainers have requested properties like these to not be added to the devicetree-bindings, so the new property is deliberately not added to the existing devicetree-bindings. Reviewed-by: Andy Shevchenko Signed-off-by: Hans de Goede Signed-off-by: Sebastian Reichel --- diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c index cd80d74..f758e28 100644 --- a/drivers/power/supply/bq25890_charger.c +++ b/drivers/power/supply/bq25890_charger.c @@ -111,6 +111,7 @@ struct bq25890_device { struct regmap_field *rmap_fields[F_MAX_FIELDS]; bool skip_reset; + bool read_back_init_data; enum bq25890_chip_version chip_version; struct bq25890_init_data init_data; struct bq25890_state state; @@ -696,7 +697,7 @@ static int bq25890_chip_reset(struct bq25890_device *bq) static int bq25890_rw_init_data(struct bq25890_device *bq) { - bool write = true; + bool write = !bq->read_back_init_data; int ret; int i; @@ -981,6 +982,10 @@ static int bq25890_fw_probe(struct bq25890_device *bq) struct bq25890_init_data *init = &bq->init_data; bq->skip_reset = device_property_read_bool(bq->dev, "linux,skip-reset"); + bq->read_back_init_data = device_property_read_bool(bq->dev, + "linux,read-back-settings"); + if (bq->read_back_init_data) + return 0; ret = bq25890_fw_read_u32_props(bq); if (ret < 0)