drm/panel: panel-simple: Stash DP AUX bus; allow using it for DDC

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If panel-simple is instantiated as a DP AUX bus endpoint then we have
access to the DP AUX bus. Let's stash it in the panel-simple
structure, leaving it NULL for the cases where the panel is
instantiated in other ways.

If we happen to have access to the DP AUX bus and we weren't provided
the ddc-i2c-bus in some other manner, let's use the DP AUX bus for it.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210611101711.v10.6.I18e60221f6d048d14d6c50a770b15f356fa75092@changeid

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Douglas Anderson 2021-06-11 10:17:42 -07:00

parent 74c06c282a

commit cc5a3fc041

1 changed files with 12 additions and 6 deletions

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drivers/gpu/drm/panel/panel-simple.c

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