On Wed, 04 Jan 2023, Jouni Högander <[email protected]> wrote: > Add 4th pipe and extend TGL Wa_16013835468 to support ADLP, MTL and > DG2 and all TGL steppings.
Please prefix the subject with "drm/i915/psr" instead of the overly generic "display". > > BSpec: 54369, 55378, 66624 > > v2: > - apply for PSR1 as well > - remove stepping information from comments > > Cc: Matt Roper <[email protected]> > Cc: José Roberto de Souza <[email protected]> > Cc: Stanislav Lisovskiy <[email protected]> > Nitpick, while at it, please no blank lines between tags. Both of the above can be fixed while applying if there's no other reason to resend the patch. BR, Jani. > Signed-off-by: Mika Kahola <[email protected]> > Signed-off-by: Jouni Högander <[email protected]> > --- > drivers/gpu/drm/i915/display/intel_psr.c | 48 ++++++++++++++---------- > drivers/gpu/drm/i915/i915_reg.h | 1 + > 2 files changed, 29 insertions(+), 20 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_psr.c > b/drivers/gpu/drm/i915/display/intel_psr.c > index d0d774219cc5..507f810d4a4a 100644 > --- a/drivers/gpu/drm/i915/display/intel_psr.c > +++ b/drivers/gpu/drm/i915/display/intel_psr.c > @@ -1112,6 +1112,8 @@ static u32 wa_16013835468_bit_get(struct intel_dp > *intel_dp) > return LATENCY_REPORTING_REMOVED_PIPE_B; > case PIPE_C: > return LATENCY_REPORTING_REMOVED_PIPE_C; > + case PIPE_D: > + return LATENCY_REPORTING_REMOVED_PIPE_D; > default: > MISSING_CASE(intel_dp->psr.pipe); > return 0; > @@ -1163,6 +1165,23 @@ static void intel_psr_enable_source(struct intel_dp > *intel_dp, > intel_dp->psr.psr2_sel_fetch_enabled ? > IGNORE_PSR2_HW_TRACKING : 0); > > + /* > + * Wa_16013835468 > + * Wa_14015648006 > + */ > + if (IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) || > + IS_DISPLAY_VER(dev_priv, 12, 13)) { > + u16 vtotal, vblank; > + > + vtotal = crtc_state->uapi.adjusted_mode.crtc_vtotal - > + crtc_state->uapi.adjusted_mode.crtc_vdisplay; > + vblank = crtc_state->uapi.adjusted_mode.crtc_vblank_end - > + crtc_state->uapi.adjusted_mode.crtc_vblank_start; > + if (vblank > vtotal) > + intel_de_rmw(dev_priv, GEN8_CHICKEN_DCPR_1, 0, > + wa_16013835468_bit_get(intel_dp)); > + } > + > if (intel_dp->psr.psr2_enabled) { > if (DISPLAY_VER(dev_priv) == 9) > intel_de_rmw(dev_priv, CHICKEN_TRANS(cpu_transcoder), 0, > @@ -1196,20 +1215,6 @@ static void intel_psr_enable_source(struct intel_dp > *intel_dp, > else if (IS_ALDERLAKE_P(dev_priv)) > intel_de_rmw(dev_priv, CLKGATE_DIS_MISC, 0, > CLKGATE_DIS_MISC_DMASC_GATING_DIS); > - > - /* Wa_16013835468:tgl[b0+], dg1 */ > - if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_B0, STEP_FOREVER) || > - IS_DG1(dev_priv)) { > - u16 vtotal, vblank; > - > - vtotal = crtc_state->uapi.adjusted_mode.crtc_vtotal - > - crtc_state->uapi.adjusted_mode.crtc_vdisplay; > - vblank = crtc_state->uapi.adjusted_mode.crtc_vblank_end > - > - > crtc_state->uapi.adjusted_mode.crtc_vblank_start; > - if (vblank > vtotal) > - intel_de_rmw(dev_priv, GEN8_CHICKEN_DCPR_1, 0, > - wa_16013835468_bit_get(intel_dp)); > - } > } > } > > @@ -1362,6 +1367,15 @@ static void intel_psr_disable_locked(struct intel_dp > *intel_dp) > intel_de_rmw(dev_priv, CHICKEN_PAR1_1, > DIS_RAM_BYPASS_PSR2_MAN_TRACK, 0); > > + /* > + * Wa_16013835468 > + * Wa_14015648006 > + */ > + if (IS_MTL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0) || > + IS_DISPLAY_VER(dev_priv, 12, 13)) > + intel_de_rmw(dev_priv, GEN8_CHICKEN_DCPR_1, > + wa_16013835468_bit_get(intel_dp), 0); > + > if (intel_dp->psr.psr2_enabled) { > /* Wa_16011168373:adl-p */ > if (IS_ADLP_DISPLAY_STEP(dev_priv, STEP_A0, STEP_B0)) > @@ -1377,12 +1391,6 @@ static void intel_psr_disable_locked(struct intel_dp > *intel_dp) > else if (IS_ALDERLAKE_P(dev_priv)) > intel_de_rmw(dev_priv, CLKGATE_DIS_MISC, > CLKGATE_DIS_MISC_DMASC_GATING_DIS, 0); > - > - /* Wa_16013835468:tgl[b0+], dg1 */ > - if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_B0, STEP_FOREVER) || > - IS_DG1(dev_priv)) > - intel_de_rmw(dev_priv, GEN8_CHICKEN_DCPR_1, > - wa_16013835468_bit_get(intel_dp), 0); > } > > intel_snps_phy_update_psr_power_state(dev_priv, phy, false); > diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h > index 8b2cf980f323..b0b3b511e19f 100644 > --- a/drivers/gpu/drm/i915/i915_reg.h > +++ b/drivers/gpu/drm/i915/i915_reg.h > @@ -5737,6 +5737,7 @@ > #define RESET_PCH_HANDSHAKE_ENABLE REG_BIT(4) > > #define GEN8_CHICKEN_DCPR_1 _MMIO(0x46430) > +#define LATENCY_REPORTING_REMOVED_PIPE_D REG_BIT(31) > #define SKL_SELECT_ALTERNATE_DC_EXIT REG_BIT(30) > #define LATENCY_REPORTING_REMOVED_PIPE_C REG_BIT(25) > #define LATENCY_REPORTING_REMOVED_PIPE_B REG_BIT(24) -- Jani Nikula, Intel Open Source Graphics Center
