diff options
| author | Mitul Golani <mitulkumar.ajitkumar.golani@intel.com> | 2025-01-20 22:52:06 +0530 |
|---|---|---|
| committer | Ankit Nautiyal <ankit.k.nautiyal@intel.com> | 2025-01-24 07:53:30 +0530 |
| commit | 65599f65b4f1538f335ef4ae7612302a4183cb5e (patch) | |
| tree | a592ddeaed6226226e795031210cb8816b04acb3 | |
| parent | 9217f9aaef62236da37f6e915047352d114eff77 (diff) | |
drm/i915/scaler: Limit pipe scaler downscaling factors for YUV420
Limit downscaling to less than 1.5 (source/destination) in
the horizontal direction and 1.0 in the vertical direction,
When configured for Pipe YUV 420 encoding for port output.
Bspec: 50441, 7490, 69901
Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250120172209.188488-6-mitulkumar.ajitkumar.golani@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/display/skl_scaler.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c index 54f9adba4ac0..c8bf6fd92ce8 100644 --- a/drivers/gpu/drm/i915/display/skl_scaler.c +++ b/drivers/gpu/drm/i915/display/skl_scaler.c @@ -459,6 +459,16 @@ static int intel_atomic_setup_scaler(struct intel_crtc_state *crtc_state, calculate_max_scale(crtc, 0, *scaler_id, &max_hscale, &max_vscale); + /* + * When configured for Pipe YUV 420 encoding for port output, + * limit downscaling to less than 1.5 (source/destination) in + * the horizontal direction and 1.0 in the vertical direction. + */ + if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) { + max_hscale = 0x18000 - 1; + max_vscale = 0x10000; + } + hscale = drm_rect_calc_hscale(&src, &crtc_state->pch_pfit.dst, 0, max_hscale); vscale = drm_rect_calc_vscale(&src, &crtc_state->pch_pfit.dst, |