On Mon, 22 Aug 2022, Jouni Högander <[email protected]> wrote: > Pps power hook seems to be problematic for backlight controlled via > aux channel. Disable it for such cases. > > Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/3657 > Signed-off-by: Jouni Högander <[email protected]> > Signed-off-by: Jani Nikula <[email protected]>
Reviewed-by: Jani Nikula <[email protected]> > --- > drivers/gpu/drm/i915/display/intel_backlight.c | 11 ++++++++--- > drivers/gpu/drm/i915/display/intel_dp.c | 2 -- > 2 files changed, 8 insertions(+), 5 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_backlight.c > b/drivers/gpu/drm/i915/display/intel_backlight.c > index af28b143d27a..5d317a20dd0f 100644 > --- a/drivers/gpu/drm/i915/display/intel_backlight.c > +++ b/drivers/gpu/drm/i915/display/intel_backlight.c > @@ -17,6 +17,7 @@ > #include "intel_dsi_dcs_backlight.h" > #include "intel_panel.h" > #include "intel_pci_config.h" > +#include "intel_pps.h" > > /** > * scale - scale values from one range to another > @@ -1778,9 +1779,13 @@ void intel_backlight_init_funcs(struct intel_panel > *panel) > panel->backlight.pwm_funcs = &i9xx_pwm_funcs; > } > > - if (connector->base.connector_type == DRM_MODE_CONNECTOR_eDP && > - intel_dp_aux_init_backlight_funcs(connector) == 0) > - return; > + if (connector->base.connector_type == DRM_MODE_CONNECTOR_eDP) { > + if (intel_dp_aux_init_backlight_funcs(connector) == 0) > + return; > + > + if (!(dev_priv->quirks & QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK)) > + connector->panel.backlight.power = > intel_pps_backlight_power; > + } > > /* We're using a standard PWM backlight interface */ > panel->backlight.funcs = &pwm_bl_funcs; > diff --git a/drivers/gpu/drm/i915/display/intel_dp.c > b/drivers/gpu/drm/i915/display/intel_dp.c > index 32292c0be2bd..ac90d455a7c7 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp.c > +++ b/drivers/gpu/drm/i915/display/intel_dp.c > @@ -5293,8 +5293,6 @@ static bool intel_edp_init_connector(struct intel_dp > *intel_dp, > > intel_panel_init(intel_connector); > > - if (!(dev_priv->quirks & QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK)) > - intel_connector->panel.backlight.power = > intel_pps_backlight_power; > intel_backlight_setup(intel_connector, pipe); > > intel_edp_add_properties(intel_dp); -- Jani Nikula, Intel Open Source Graphics Center
