Quoting Bjorn Andersson (2022-05-23 16:37:19)
> The leds-trigger-pattern documentation describes how the brightness of
> the LED should transition linearly from one brightness value to the
> next, over the given delta_t.
>
> But the pattern engine in the Qualcomm LPG hardware only supports
> holding the brightness for each entry for the period.
> This subset of patterns can be represented in the leds-trigger-pattern
> by injecting zero-time transitions after each entry in the pattern,
> resulting in a pattern that pattern that can be rendered by the LPG.
s/that pattern//
>
> Rework LPG pattern interface to require these zero-time transitions, to
> make it comply with this subset of patterns and reject the patterns it
> can't render.
>
> Fixes: 24e2d05d1b68 ("leds: Add driver for Qualcomm LPG")
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> ---
Reviewed-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
