drm/i915/dpcd_bl: uncheck PWM_PIN_CAP when detect eDP backlight capabilities

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BOE panel with ID 2270 claims both PWM_PIN_CAP and AUX_SET_CAP backlight
control bits, but default chip backlight failed to control brightness.

Check AUX_SET_CAP and proceed to check quirks or VBT backlight type.
DPCD can control the brightness of this pannel.

Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201009085750.88490-1-aaron.ma@canonical.com

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Aaron Ma 2020-10-09 16:57:49 +08:00 • committed by Lyude Paul

parent 4ade8f31c2

commit 98e497e203

1 changed files with 1 additions and 2 deletions

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drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c

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