Update the reference overhead values for audio bw calculations for MTL onwards
v2: fix the patch description (Kai) Bspec: 67768 Signed-off-by: Vinod Govindapillai <[email protected]> Reviewed-by: Kai Vehmanen <[email protected]> --- drivers/gpu/drm/i915/display/intel_dp.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index efcba6e5c452..25691f87f779 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -109,6 +109,8 @@ /* DP Audio bw params calculations. Bspec: 67768 */ #define DP_AUDIO_BW_HBLANK_OVERHEAD_AVAIL 64 #define DP_AUDIO_BW_HBLANK_OVERHEAD_REQ 80 +#define MTL_DP_AUDIO_BW_HBLANK_OVERHEAD_REQ 0 + /* Constants for DP DSC configurations */ static const u8 valid_dsc_bpp[] = {6, 8, 10, 12, 15}; @@ -3071,10 +3073,15 @@ intel_dp_audio_compute_bw_limits(struct intel_encoder *encoder, struct intel_display *display = to_intel_display(encoder); struct intel_connector *connector = to_intel_connector(conn_state->connector); int hblank_bytes_avail_overhead = DP_AUDIO_BW_HBLANK_OVERHEAD_AVAIL; - int hblank_bytes_req_overhead = DP_AUDIO_BW_HBLANK_OVERHEAD_REQ; + int hblank_bytes_req_overhead; int hblank_slots_lanes_bytes; int line_freq_khz; + if (DISPLAY_VER(display) >= 14) + hblank_bytes_req_overhead = MTL_DP_AUDIO_BW_HBLANK_OVERHEAD_REQ; + else + hblank_bytes_req_overhead = DP_AUDIO_BW_HBLANK_OVERHEAD_REQ; + intel_dp_compute_audio_bwparams(crtc_state, &line_freq_khz, &hblank_slots_lanes_bytes); drm_dbg_kms(display->drm, -- 2.34.1
