diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_mst.c | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 611041a94d06..fc5455a55bd7 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -1135,6 +1135,14 @@ static void enable_bs_jitter_was(const struct intel_crtc_state *crtc_state) if (crtc_state->fec_enable || intel_dp_is_uhbr(crtc_state)) set |= DP_MST_FEC_BS_JITTER_WA(crtc_state->cpu_transcoder); + /* Wa_14014143976:adlp */ + if (IS_DISPLAY_STEP(i915, STEP_E0, STEP_FOREVER)) { + if (intel_dp_is_uhbr(crtc_state)) + set |= DP_MST_SHORT_HBLANK_WA(crtc_state->cpu_transcoder); + else if (crtc_state->fec_enable) + clear |= DP_MST_SHORT_HBLANK_WA(crtc_state->cpu_transcoder); + } + if (!clear && !set) return; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 1e8720e25160..81eb36fa0837 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4565,6 +4565,7 @@ #define GLK_CL0_PWR_DOWN REG_BIT(10) #define CHICKEN_MISC_3 _MMIO(0x42088) +#define DP_MST_SHORT_HBLANK_WA(trans) REG_BIT(5 + (trans) - TRANSCODER_A) #define DP_MST_FEC_BS_JITTER_WA(trans) REG_BIT(0 + (trans) - TRANSCODER_A) #define CHICKEN_MISC_4 _MMIO(0x4208c) |