On Sun, Dec 17, 2023 at 07:46:42PM +0100, Heiner Kallweit wrote:
> If hw doesn't support sw control of the LED and we switch to a mode
> not supported by hw, currently we get lots of errors because neither
> brigthness_set() nor brithness_set_blocking() is set.
> Deal with this by not falling back to sw control, and return
> -EOPNOTSUPP to the user. Note that we still store the new mode.
> This is needed in case an intermediate unsupported mode is necessary
> to switch from one supported mode to another.
>
> Add a comment explaining how a driver for such hw is supposed to behave.
>
> Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Andrew
