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drm/i915: Set crtc_state->lane_count for HDMI 

Set the lane count for HDMI to 4. This will make it easier to
unduplicate CHV phy code.

This also fixes the the soft reset programming for HDMI with CHV. After
commit a8f327fb84 ("drm/i915: Clean up CHV lane soft reset
programming"), it wouldn't set the right bits for PCS23 since it relied
on a lane count that was never set.

v2: Set lane_count in *_get_config() to please state checker. (0day)
v3: Set lane_count for DDI in DVI mode too. (CI)
v4: Add note about CHV soft lane reset. (Ander)

Fixes: a8f327fb84 ("drm/i915: Clean up CHV lane soft reset programming")
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Jim Bride <jim.bride@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1461761065-21195-2-git-send-email-ander.conselvan.de.oliveira@intel.com
(cherry picked from commit d4d6279abe)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ander Conselvan de Oliveira 2016-04-27 15:44:16 +03:00 committed by Jani Nikula
parent 130b62f74a
commit 2bae030468
2 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/i915/intel_ddi.c
View File

@ -2209,8 +2209,10 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
if (intel_hdmi->infoframe_enabled(&encoder->base, pipe_config))
pipe_config->has_infoframe = true;
break;
/* fall through */
case TRANS_DDI_MODE_SELECT_DVI:
pipe_config->lane_count = 4;
break;
case TRANS_DDI_MODE_SELECT_FDI:
break;
case TRANS_DDI_MODE_SELECT_DP_SST:

4
drivers/gpu/drm/i915/intel_hdmi.c
View File

@ -971,6 +971,8 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder,
dotclock /= pipe_config->pixel_multiplier;
pipe_config->base.adjusted_mode.crtc_clock = dotclock;
pipe_config->lane_count = 4;
}
static void intel_enable_hdmi_audio(struct intel_encoder *encoder)
@ -1372,6 +1374,8 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder,
/* Set user selected PAR to incoming mode's member */
adjusted_mode->picture_aspect_ratio = intel_hdmi->aspect_ratio;
pipe_config->lane_count = 4;
return true;
}