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* [PATCH] drm/i915/dp: Return min bpc supported by source instead of 0
@ 2025-01-31  4:13 Ankit Nautiyal
  2025-01-31  4:43 ` ✓ CI.Patch_applied: success for " Patchwork
                   ` (9 more replies)
  0 siblings, 10 replies; 12+ messages in thread
From: Ankit Nautiyal @ 2025-01-31  4:13 UTC (permalink / raw)
  To: intel-gfx, intel-xe
  Cc: jani.nikula, suraj.kandpal, rodrigo.vivi, david.laight.linux,
	naresh.kamboju

Currently, intel_dp_dsc_max_src_input_bpc can return 0 for platforms not
supporting DSC, which could theoretically cause issues in clamp()
due to a low limit being greater than the high limit.

Instead, return the minimum bpc supported by the source to prevent
such issues.

Reported-by: Linux Kernel Functional Testing <lkft@linaro.org>
Closes: https://lore.kernel.org/all/CA+G9fYtNfM399_=_ff81zeRJv=0+z7oFJfPGmJgTp6yrJmU+1w@mail.gmail.com/
Fixes: 160672b86b0d ("drm/i915/dp: Use clamp for pipe_bpp limits with DSC")
Cc: Suraj Kandpal <suraj.kandpal@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 80214a559013..d28abf081844 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1791,7 +1791,7 @@ int intel_dp_dsc_max_src_input_bpc(struct intel_display *display)
 	if (DISPLAY_VER(display) == 11)
 		return 10;
 
-	return 0;
+	return intel_dp_dsc_min_src_input_bpc();
 }
 
 int intel_dp_dsc_compute_max_bpp(const struct intel_connector *connector,
-- 
2.45.2


^ permalink raw reply related	[flat|nested] 12+ messages in thread
end of thread, other threads:[~2025-01-31 15:20 UTC | newest]

Thread overview: 12+ messages (download: mbox.gz follow: Atom feed
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2025-01-31  4:13 [PATCH] drm/i915/dp: Return min bpc supported by source instead of 0 Ankit Nautiyal
2025-01-31  4:43 ` ✓ CI.Patch_applied: success for " Patchwork
2025-01-31  4:43 ` ✓ CI.checkpatch: " Patchwork
2025-01-31  4:45 ` ✓ CI.KUnit: " Patchwork
2025-01-31  4:55 ` [PATCH] " Kandpal, Suraj
2025-01-31  5:08 ` ✓ CI.Build: success for " Patchwork
2025-01-31  5:11 ` ✓ CI.Hooks: " Patchwork
2025-01-31  5:12 ` ✓ CI.checksparse: " Patchwork
2025-01-31  5:38 ` ✓ Xe.CI.BAT: " Patchwork
2025-01-31  6:10 ` [PATCH] " Borah, Chaitanya Kumar
2025-01-31 15:20   ` Rodrigo Vivi
2025-01-31  7:22 ` ✗ Xe.CI.Full: failure for " Patchwork

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