On Wed, Dec 07, 2022 at 04:01:31PM -0800, Matt Atwood wrote:
> From: Jouni Högander <[email protected]>
>
> This patch introduces initial workarounds for mtl platform
>
> v2: switch IS_MTL_DISPLAY_STEP to use IS_METEORLAKE from testing display
> ver. (Tvrtko)
>
> v3: clerical issues, extend 16015201720 to mtl.
>
> Bspec: 66624
>
> Signed-off-by: Matt Atwood <[email protected]>
> Signed-off-by: Jouni Högander <[email protected]>
> ---
> drivers/gpu/drm/i915/display/intel_dmc.c | 4 ++--
> drivers/gpu/drm/i915/display/intel_fbc.c | 6 +++--
> drivers/gpu/drm/i915/display/intel_hdmi.c | 3 ++-
> drivers/gpu/drm/i915/display/intel_psr.c | 27 ++++++++++++++++-------
> drivers/gpu/drm/i915/i915_drv.h | 4 ++++
> 5 files changed, 31 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dmc.c
> b/drivers/gpu/drm/i915/display/intel_dmc.c
> index eff3add70611..dcfd3c43c788 100644
> --- a/drivers/gpu/drm/i915/display/intel_dmc.c
> +++ b/drivers/gpu/drm/i915/display/intel_dmc.c
> @@ -387,11 +387,11 @@ static void pipedmc_clock_gating_wa(struct
> drm_i915_private *i915, bool enable)
> {
> enum pipe pipe;
>
> - if (DISPLAY_VER(i915) != 13)
> + if (DISPLAY_VER(i915) <= 13)
This change isn't correct; you lost DG2 and ADL-P here.
Matt
> return;
>
> /*
> - * Wa_16015201720:adl-p,dg2
> + * Wa_16015201720:adl-p,dg2, mtl
> * The WA requires clock gating to be disabled all the time
> * for pipe A and B.
> * For pipe C and D clock gating needs to be disabled only
> diff --git a/drivers/gpu/drm/i915/display/intel_fbc.c
> b/drivers/gpu/drm/i915/display/intel_fbc.c
> index deba0c49c827..5e69d3c11d21 100644
> --- a/drivers/gpu/drm/i915/display/intel_fbc.c
> +++ b/drivers/gpu/drm/i915/display/intel_fbc.c
> @@ -811,7 +811,7 @@ static void intel_fbc_program_cfb(struct intel_fbc *fbc)
>
> static void intel_fbc_program_workarounds(struct intel_fbc *fbc)
> {
> - /* Wa_22014263786:icl,jsl,tgl,dg1,rkl,adls,adlp */
> + /* Wa_22014263786:icl,jsl,tgl,dg1,rkl,adls,adlp,mtl */
> if (DISPLAY_VER(fbc->i915) >= 11 && !IS_DG2(fbc->i915))
> intel_de_rmw(fbc->i915, ILK_DPFC_CHICKEN(fbc->id), 0,
> DPFC_CHICKEN_FORCE_SLB_INVALIDATION);
> @@ -1091,7 +1091,9 @@ static int intel_fbc_check_plane(struct
> intel_atomic_state *state,
> }
>
> /* Wa_14016291713 */
> - if (IS_DISPLAY_VER(i915, 12, 13) && crtc_state->has_psr) {
> + if ((IS_DISPLAY_VER(i915, 12, 13) ||
> + IS_MTL_DISPLAY_STEP(i915, STEP_A0, STEP_C0)) &&
> + crtc_state->has_psr) {
> plane_state->no_fbc_reason = "PSR1 enabled (Wa_14016291713)";
> return 0;
> }
> diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c
> b/drivers/gpu/drm/i915/display/intel_hdmi.c
> index e82f8a07e2b0..efa2da080f62 100644
> --- a/drivers/gpu/drm/i915/display/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
> @@ -537,7 +537,8 @@ void hsw_write_infoframe(struct intel_encoder *encoder,
> 0);
>
> /* Wa_14013475917 */
> - if (DISPLAY_VER(dev_priv) == 13 && crtc_state->has_psr &&
> + if ((DISPLAY_VER(dev_priv) == 13 ||
> + IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0)) &&
> crtc_state->has_psr &&
> type == DP_SDP_VSC)
> return;
>
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> b/drivers/gpu/drm/i915/display/intel_psr.c
> index 5b678916e6db..9820e5fdd087 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -797,7 +797,7 @@ static bool psr2_granularity_check(struct intel_dp
> *intel_dp,
> return intel_dp->psr.su_y_granularity == 4;
>
> /*
> - * adl_p and display 14+ platforms has 1 line granularity.
> + * adl_p and mtl platforms have 1 line granularity.
> * For other platforms with SW tracking we can adjust the y coordinates
> * to match sink requirement if multiple of 4.
> */
> @@ -1170,11 +1170,14 @@ static void intel_psr_enable_source(struct intel_dp
> *intel_dp,
> PSR2_ADD_VERTICAL_LINE_COUNT);
>
> /*
> - * Wa_16014451276:adlp
> + * Wa_16014451276:adlp,mtl[a0,b0]
> * All supported adlp panels have 1-based X granularity, this
> may
> * cause issues if non-supported panels are used.
> */
> - if (IS_ALDERLAKE_P(dev_priv))
> + if (IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
> + intel_de_rmw(dev_priv,
> MTL_CHICKEN_TRANS(cpu_transcoder), 0,
> + ADLP_1_BASED_X_GRANULARITY);
> + else if (IS_ALDERLAKE_P(dev_priv))
> intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder), 0,
> ADLP_1_BASED_X_GRANULARITY);
>
> @@ -1185,8 +1188,12 @@ static void intel_psr_enable_source(struct intel_dp
> *intel_dp,
> TRANS_SET_CONTEXT_LATENCY_MASK,
> TRANS_SET_CONTEXT_LATENCY_VALUE(1));
>
> - /* Wa_16012604467:adlp */
> - if (IS_ALDERLAKE_P(dev_priv))
> + /* Wa_16012604467:adlp,mtl[a0,b0] */
> + if (IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
> + intel_de_rmw(dev_priv,
> + MTL_CLKGATE_DIS_TRANS(cpu_transcoder), 0,
> + MTL_CLKGATE_DIS_TRANS_DMASC_GATING_DIS);
> + else if (IS_ALDERLAKE_P(dev_priv))
> intel_de_rmw(dev_priv, CLKGATE_DIS_MISC, 0,
> CLKGATE_DIS_MISC_DMASC_GATING_DIS);
>
> @@ -1362,8 +1369,12 @@ static void intel_psr_disable_locked(struct intel_dp
> *intel_dp)
>
> TRANS_SET_CONTEXT_LATENCY(intel_dp->psr.transcoder),
> TRANS_SET_CONTEXT_LATENCY_MASK, 0);
>
> - /* Wa_16012604467:adlp */
> - if (IS_ALDERLAKE_P(dev_priv))
> + /* Wa_16012604467:adlp,mtl[a0,b0] */
> + if (IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0))
> + intel_de_rmw(dev_priv,
> +
> MTL_CLKGATE_DIS_TRANS(intel_dp->psr.transcoder),
> + MTL_CLKGATE_DIS_TRANS_DMASC_GATING_DIS, 0);
> + else if (IS_ALDERLAKE_P(dev_priv))
> intel_de_rmw(dev_priv, CLKGATE_DIS_MISC,
> CLKGATE_DIS_MISC_DMASC_GATING_DIS, 0);
>
> @@ -1625,7 +1636,7 @@ static void psr2_man_trk_ctl_calc(struct
> intel_crtc_state *crtc_state,
>
> if (full_update) {
> /*
> - * Not applying Wa_14014971508:adlp as we do not support the
> + * Not applying Wa_14014971508:adlp,mtl as we do not support the
> * feature that requires this workaround.
> */
> val |= man_trk_ctl_single_full_frame_bit_get(dev_priv);
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index a8a5bd426e78..0ad206f76b7b 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -727,6 +727,10 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
> (IS_SUBPLATFORM(__i915, INTEL_METEORLAKE, INTEL_SUBPLATFORM_##variant)
> && \
> IS_GRAPHICS_STEP(__i915, since, until))
>
> +#define IS_MTL_DISPLAY_STEP(__i915, since, until) \
> + (IS_METEORLAKE(__i915) && \
> + IS_DISPLAY_STEP(__i915, since, until))
> +
> /*
> * DG2 hardware steppings are a bit unusual. The hardware design was forked
> to
> * create three variants (G10, G11, and G12) which each have distinct
> --
> 2.38.1
>
--
Matt Roper
Graphics Software Engineer
VTT-OSGC Platform Enablement
Intel Corporation
