From: Mavroudis Chatzilaridis <mavchatz@xxxxxxxxxxxxxx> commit 5e438bf7f9a1705ebcae5fa89cdbfbc6932a7871 upstream. This laptop uses inverted backlight PWM. Thus, without this quirk, backlight brightness decreases as the brightness value increases and vice versa. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8013 Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Mavroudis Chatzilaridis <mavchatz@xxxxxxxxxxxxxx> Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx> Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20230201184947.8835-1-mavchatz@xxxxxxxxxxxxxx (cherry picked from commit 83e7d6fd330d413cb2064e680ffea91b0512a520) Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_quirks.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/gpu/drm/i915/display/intel_quirks.c +++ b/drivers/gpu/drm/i915/display/intel_quirks.c @@ -159,6 +159,8 @@ static struct intel_quirk intel_quirks[] /* ECS Liva Q2 */ { 0x3185, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time }, { 0x3184, 0x1019, 0xa94d, quirk_increase_ddi_disabled_time }, + /* HP Notebook - 14-r206nv */ + { 0x0f31, 0x103c, 0x220f, quirk_invert_brightness }, }; void intel_init_quirks(struct drm_i915_private *i915)
