On Wed, Jun 12, 2019 at 10:47:22PM -0700, Lee, Shawn C wrote: > Modify aux backlight enable sequence just like what we > did for genernal eDP panel. > 1. Setup PWM freq and brightness level before enable display backlight. > 2. Add T8 (valid data to backlight enable) delay. If we respect the on_delay shouldn't we then respect the off_delay too? In which case I suggest two patches: 1. swaap the enable vs. set_brightness order 2. add the on/off delays > > Cc: Jani Nikula <jani.nikula@xxxxxxxxx> > Cc: Jose Roberto de Souza <jose.souza@xxxxxxxxx> > Cc: Cooper Chiou <cooper.chiou@xxxxxxxxx> > > Signed-off-by: Lee, Shawn C <shawn.c.lee@xxxxxxxxx> > --- > drivers/gpu/drm/i915/intel_dp_aux_backlight.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/intel_dp_aux_backlight.c > index 7ded95a334db..c112e0b930de 100644 > --- a/drivers/gpu/drm/i915/intel_dp_aux_backlight.c > +++ b/drivers/gpu/drm/i915/intel_dp_aux_backlight.c > @@ -216,8 +216,12 @@ static void intel_dp_aux_enable_backlight(const struct intel_crtc_state *crtc_st > } > } > > - set_aux_backlight_enable(intel_dp, true); > intel_dp_aux_set_backlight(conn_state, connector->panel.backlight.level); > + > + wait_remaining_ms_from_jiffies(intel_dp->last_power_on, > + intel_dp->backlight_on_delay); > + > + set_aux_backlight_enable(intel_dp, true); > } > > static void intel_dp_aux_disable_backlight(const struct drm_connector_state *old_conn_state) > -- > 2.7.4 > > _______________________________________________ > Intel-gfx mailing list > Intel-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/intel-gfx -- Ville Syrjälä Intel _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
