To make way for fractional bpp support, avoid left shifting the
output_bpp by 4 in helper intel_dp_dsc_get_output_bpp.
Signed-off-by: Ankit Nautiyal <ankit.k.nauti...@intel.com>
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovs...@intel.com>
---
drivers/gpu/drm/i915/display/intel_dp.c | 10 +++-------
drivers/gpu/drm/i915/display/intel_dp_mst.c | 2 +-
2 files changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
b/drivers/gpu/drm/i915/display/intel_dp.c
index 78ac8f4fd348..c1eb0d1e229e 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -814,11 +814,7 @@ u16 intel_dp_dsc_get_max_compressed_bpp(struct
drm_i915_private *i915,
bits_per_pixel = intel_dp_dsc_nearest_valid_bpp(i915, bits_per_pixel,
pipe_bpp);
- /*
- * Compressed BPP in U6.4 format so multiply by 16, for Gen 11,
- * fractional part is 0
- */
- return bits_per_pixel << 4;
+ return bits_per_pixel;
}
u8 intel_dp_dsc_get_slice_count(struct intel_dp *intel_dp,
@@ -1208,7 +1204,7 @@ intel_dp_mode_valid(struct drm_connector *_connector,
mode->hdisplay,
bigjoiner,
output_format,
- pipe_bpp,
64) >> 4;
+ pipe_bpp,
64);
dsc_slice_count =
intel_dp_dsc_get_slice_count(intel_dp,
target_clock,
@@ -1814,7 +1810,7 @@ int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
pipe_config->pipe_bpp);
pipe_config->dsc.compressed_bpp = min_t(u16,
-
dsc_max_compressed_bpp >> 4,
+
dsc_max_compressed_bpp,
output_bpp);
}
pipe_config->dsc.slice_count = dsc_dp_slice_count;
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c
b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index dff4717edbd0..4895d6242915 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -982,7 +982,7 @@ intel_dp_mst_mode_valid_ctx(struct drm_connector *connector,
mode->hdisplay,
bigjoiner,
INTEL_OUTPUT_FORMAT_RGB,
- pipe_bpp,
64) >> 4;
+ pipe_bpp,
64);
dsc_slice_count =
intel_dp_dsc_get_slice_count(intel_dp,
target_clock,
--
2.40.1
