On Mon, Apr 01, 2019 at 10:17:19AM -0700, Douglas Anderson wrote: > From: Sean Paul <seanpaul@xxxxxxxxxxxx> > > This patch adds the ability to override the typical display timing for a > given panel. This is useful for devices which have timing constraints > that do not apply across the entire display driver (eg: to avoid > crosstalk between panel and digitizer on certain laptops). The rules are > as follows: > > - panel must not specify fixed mode (since the override mode will > either be the same as the fixed mode, or we'll be unable to > check the bounds of the overried) > - panel must specify at least one display_timing range which will be > used to ensure the override mode fits within its bounds > > Changes in v2: > - Parse the full display-timings node (using the native-mode) (Rob) > Changes in v3: > - No longer parse display-timings subnode, use panel-timing (Rob) > Changes in v4: > - Don't add mode from timing if override was specified (Thierry) > - Add warning if timing and fixed mode was specified (Thierry) > - Don't add fixed mode if timing was specified (Thierry) > - Refactor/rename a bit to avoid extra indentation from "if" tests > - i should be unsigned (Thierry) > - Add annoying WARN_ONs for some cases (Thierry) > - Simplify 'No display_timing found' handling (Thierry) > - Rename to panel_simple_parse_override_mode() (Thierry) > Changes in v5: > - Added Heiko's Tested-by > > Cc: Doug Anderson <dianders@xxxxxxxxxxxx> > Cc: Eric Anholt <eric@xxxxxxxxxx> > Cc: Heiko Stuebner <heiko@xxxxxxxxx> > Cc: Jeffy Chen <jeffy.chen@xxxxxxxxxxxxxx> > Cc: Rob Herring <robh+dt@xxxxxxxxxx> > Cc: Stéphane Marchesin <marcheu@xxxxxxxxxxxx> > Cc: Thierry Reding <thierry.reding@xxxxxxxxx> > Cc: devicetree@xxxxxxxxxxxxxxx > Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx > Signed-off-by: Sean Paul <seanpaul@xxxxxxxxxxxx> > Tested-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx> > Signed-off-by: Douglas Anderson <dianders@xxxxxxxxxxxx> > Tested-by: Heiko Stuebner <heiko@xxxxxxxxx> > --- > > drivers/gpu/drm/panel/panel-simple.c | 109 +++++++++++++++++++++++++-- > 1 file changed, 104 insertions(+), 5 deletions(-) Acked-by: Thierry Reding <thierry.reding@xxxxxxxxx>
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