From: Imre Deak Date: Tue, 21 Jun 2016 08:51:48 +0000 (+0300) Subject: drm/i915: Initialize the PPS HW before its first use X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0080b5da392243af673e752b5681e6388ede7da0;p=linux-beck.git drm/i915: Initialize the PPS HW before its first use The initial DPCD read for eDP detection involves using the PPS, but so far we only initialized the PPS registers after the DPCD read. The reason this was done so far is to preserve a possible LVDS PPS HW setup if LVDS is detected but eDP is not. This is not an issue any more after the previous patch, so we can move the init earlier now. This was caught by CI with the PPS sanity checks in place and the initial eDP DPCD readout waiting for the panel power cycle timeout without the PPS registers being initialized. CC: Ville Syrjälä CC: Chris Wilson Signed-off-by: Imre Deak Reviewed-by: Chris Wilson Reviewed-by: Ville Syrjälä Link: http://patchwork.freedesktop.org/patch/msgid/1466499109-20240-3-git-send-email-imre.deak@intel.com --- diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index 9493c8f76538..55b31934e966 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -5328,6 +5328,7 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp, pps_lock(intel_dp); intel_edp_panel_vdd_sanitize(intel_dp); + intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); pps_unlock(intel_dp); /* Cache DPCD and EDID for edp. */ @@ -5344,11 +5345,6 @@ static bool intel_edp_init_connector(struct intel_dp *intel_dp, return false; } - /* We now know it's not a ghost, init power sequence regs. */ - pps_lock(intel_dp); - intel_dp_init_panel_power_sequencer_registers(dev, intel_dp); - pps_unlock(intel_dp); - mutex_lock(&dev->mode_config.mutex); edid = drm_get_edid(connector, &intel_dp->aux.ddc); if (edid) {