________________________________________
From: Navare, Manasi D
Sent: Friday, October 05, 2018 4:23 PM
To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Navare, Manasi D; Jani Nikula; Ville Syrjala; Srivatsa, Anusha
Subject: [PATCH v5 28/28] drm/i915/dsc: Force DSC enable if requested by IGT/userspace
Currently the driver will only enable DSC if a certain mode
does not fit the available link BW. However IGT/userspace
can force DSC enable through dsc support debugfs node to
test the DSC functionality if supported by the panel.
Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
Cc: Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx>
Cc: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
Signed-off-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>
Reviewed-by: Anusha Srivatsa <anusha.srivatsa@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_dp.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 52dca5901aa1..987d3b2eb8d3 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2158,12 +2158,13 @@ intel_dp_compute_link_config(struct intel_encoder *encoder,
&limits);
/* enable compression if the mode doesn't fit available BW */
- if (!ret) {
- DRM_DEBUG_KMS("DP required Link rate %i does not fit available %i\n",
- intel_dp_link_required(adjusted_mode->crtc_clock,
- pipe_config->pipe_bpp),
- intel_dp_max_data_rate(pipe_config->port_clock,
- pipe_config->lane_count));
+ if (!ret || intel_dp->force_dsc_en) {
+ if (!ret)
+ DRM_DEBUG_KMS("DP required Link rate %i does not fit available %i\n",
+ intel_dp_link_required(adjusted_mode->crtc_clock,
+ pipe_config->pipe_bpp),
+ intel_dp_max_data_rate(pipe_config->port_clock,
+ pipe_config->lane_count));
if (!intel_dp_dsc_compute_config(intel_dp, pipe_config,
&limits))
--
2.18.0
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