[6/7] drm/i915/bios: fill in DSC rc_model_size from VBT
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Message ID 257510948a786f11c1b6e8aeb9d29deb039d2adf.1579700414.git.jani.nikula@intel.com
State New
Headers show
Series
  • drm/dsc: fixes and cleanups around rc_model_size
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Commit Message

Jani Nikula Jan. 22, 2020, 1:45 p.m. UTC
The VBT fields match the DPCD data, so use the same helper.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/i915/display/intel_bios.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

Patch
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diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index 70fb87e7afb6..26bcea77efc5 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -2427,16 +2427,11 @@  static void fill_dsc(struct intel_crtc_state *crtc_state,
 			      crtc_state->dsc.slice_count);
 
 	/*
-	 * FIXME: Use VBT rc_buffer_block_size and rc_buffer_size for the
-	 * implementation specific physical rate buffer size. Currently we use
-	 * the required rate buffer model size calculated in
-	 * drm_dsc_compute_rc_parameters() according to VESA DSC Annex E.
-	 *
 	 * The VBT rc_buffer_block_size and rc_buffer_size definitions
-	 * correspond to DP 1.4 DPCD offsets 0x62 and 0x63. The DP DSC
-	 * implementation should also use the DPCD (or perhaps VBT for eDP)
-	 * provided value for the buffer size.
+	 * correspond to DP 1.4 DPCD offsets 0x62 and 0x63.
 	 */
+	vdsc_cfg->rc_model_size = drm_dsc_dp_rc_buffer_size(dsc->rc_buffer_block_size,
+							    dsc->rc_buffer_size);
 
 	/* FIXME: DSI spec says bpc + 1 for this one */
 	vdsc_cfg->line_buf_depth = VBT_DSC_LINE_BUFFER_DEPTH(dsc->line_buffer_depth);