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| author | Hans de Goede <hdegoede@redhat.com> | 2022-02-01 14:06:52 +0100 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2022-02-01 14:55:11 +0100 |
| commit | 40428bd4675762f2da5e81b5b31c0425f9bd0de2 (patch) | |
| tree | e9acf4088d7439cb191e49dcff0d06dbcbc45ed5 /drivers/power/supply/bq25890_charger.c | |
| parent | power: supply: bq25890: Add support to skip reset at probe() / remove() (diff) | |
| download | linux-40428bd4675762f2da5e81b5b31c0425f9bd0de2.tar.xz linux-40428bd4675762f2da5e81b5b31c0425f9bd0de2.zip | |
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 <andriy.shevchenko@linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power/supply/bq25890_charger.c')
| -rw-r--r-- | drivers/power/supply/bq25890_charger.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/power/supply/bq25890_charger.c b/drivers/power/supply/bq25890_charger.c index cd80d748df92..f758e28046e5 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) |