UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915/fec: Set FEC_READY in FEC_CONFIGURATION 

If the panel supports FEC, the driver has to
set the FEC_READY bit in the dpcd register:
FEC_CONFIGURATION.

This has to happen before link training.

v2: s/intel_dp_set_fec_ready/intel_dp_sink_set_fec_ready
   - change commit message. (Gaurav)

v3: rebased. (r-b Manasi)

v4: Use fec crtc state, before setting FEC_READY
bit. (Anusha)

v5: Move to intel_ddi.c
- Make the function static (Anusha)

v6: Dont pass state as a separate argument (Ville)

v7: (From Manasi)
* Correct the debug print (Ville)

Cc: dri-devel@lists.freedesktop.org
Cc: Gaurav K Singh <gaurav.k.singh@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181128202628.20238-15-manasi.d.navare@intel.com
This commit is contained in:
Anusha Srivatsa 2018-11-28 12:26:26 -08:00 committed by Manasi Navare
parent 240999cf33
commit a322b97589
1 changed files with 11 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/gpu/drm/i915/intel_ddi.c
View File

@ -3102,6 +3102,16 @@ static void icl_program_mg_dp_mode(struct intel_digital_port *intel_dig_port)
I915_WRITE(MG_DP_MODE(port, 1), ln1);
}
static void intel_dp_sink_set_fec_ready(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state)
{
if (!crtc_state->fec_enable)
return;
if (drm_dp_dpcd_writeb(&intel_dp->aux, DP_FEC_CONFIGURATION, DP_FEC_READY) <= 0)
DRM_DEBUG_KMS("Failed to set FEC_READY in the sink\n");
}
static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
@ -3142,6 +3152,7 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder,
intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
intel_dp_sink_set_decompression_state(intel_dp, crtc_state,
true);
intel_dp_sink_set_fec_ready(intel_dp, crtc_state);
intel_dp_start_link_train(intel_dp);
if (port != PORT_A || INTEL_GEN(dev_priv) >= 9)
intel_dp_stop_link_train(intel_dp);