diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_types.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_psr.c | 37 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_reg.h | 1 |
3 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h index 7ea73420bcf9..d7b5e26e1394 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1044,6 +1044,7 @@ struct intel_crtc_state { bool has_psr; bool has_psr2; bool enable_psr2_sel_fetch; + bool req_psr2_sdp_prior_scanline; u32 dc3co_exitline; u16 su_y_granularity; @@ -1498,6 +1499,7 @@ struct intel_psr { bool colorimetry_support; bool psr2_enabled; bool psr2_sel_fetch_enabled; + bool req_psr2_sdp_prior_scanline; u8 sink_sync_latency; ktime_t last_entry_attempt; ktime_t last_exit; diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index e508816911fa..3cb8758be404 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -418,6 +418,9 @@ static void intel_psr_enable_sink(struct intel_dp *intel_dp) dpcd_val |= DP_PSR_CRC_VERIFICATION; } + if (intel_dp->psr.req_psr2_sdp_prior_scanline) + dpcd_val |= DP_PSR_SU_REGION_SCANLINE_CAPTURE; + drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, dpcd_val); drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER, DP_SET_POWER_D0); @@ -585,6 +588,9 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp) val |= EDP_PSR2_FAST_WAKE(7); } + if (intel_dp->psr.req_psr2_sdp_prior_scanline) + val |= EDP_PSR2_SU_SDP_SCANLINE; + if (intel_dp->psr.psr2_sel_fetch_enabled) { /* WA 1408330847 */ if (IS_TGL_DISPLAY_STEP(dev_priv, STEP_A0, STEP_A0) || @@ -814,6 +820,29 @@ static bool psr2_granularity_check(struct intel_dp *intel_dp, return true; } +static bool _compute_psr2_sdp_prior_scanline_indication(struct intel_dp *intel_dp, + struct intel_crtc_state *crtc_state) +{ + const struct drm_display_mode *adjusted_mode = &crtc_state->uapi.adjusted_mode; + struct drm_i915_private *dev_priv = dp_to_i915(intel_dp); + u32 hblank_total, hblank_ns, req_ns; + + hblank_total = adjusted_mode->crtc_hblank_end - adjusted_mode->crtc_hblank_start; + hblank_ns = div_u64(1000000ULL * hblank_total, adjusted_mode->crtc_clock); + + /* From spec: (72 / number of lanes) * 1000 / symbol clock frequency MHz */ + req_ns = (72 / crtc_state->lane_count) * 1000 / (crtc_state->port_clock / 1000); + + if ((hblank_ns - req_ns) > 100) + return true; + + if (DISPLAY_VER(dev_priv) < 13 || intel_dp->edp_dpcd[0] < DP_EDP_14b) + return false; + + crtc_state->req_psr2_sdp_prior_scanline = true; + return true; +} + static bool intel_psr2_config_valid(struct intel_dp *intel_dp, struct intel_crtc_state *crtc_state) { @@ -926,6 +955,12 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp, return false; } + if (!_compute_psr2_sdp_prior_scanline_indication(intel_dp, crtc_state)) { + drm_dbg_kms(&dev_priv->drm, + "PSR2 not enabled, PSR2 SDP indication do not fit in hblank\n"); + return false; + } + tgl_dc3co_exitline_compute_config(intel_dp, crtc_state); return true; } @@ -1173,6 +1208,8 @@ static void intel_psr_enable_locked(struct intel_dp *intel_dp, intel_dp->psr.dc3co_exit_delay = val; intel_dp->psr.dc3co_exitline = crtc_state->dc3co_exitline; intel_dp->psr.psr2_sel_fetch_enabled = crtc_state->enable_psr2_sel_fetch; + intel_dp->psr.req_psr2_sdp_prior_scanline = + crtc_state->req_psr2_sdp_prior_scanline; if (!psr_interrupt_error_check(intel_dp)) return; diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index a22c20444bca..10856e356be0 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4578,6 +4578,7 @@ enum { #define TGL_EDP_PSR2_BLOCK_COUNT_NUM_2 (0 << 28) #define TGL_EDP_PSR2_BLOCK_COUNT_NUM_3 (1 << 28) #define EDP_Y_COORDINATE_ENABLE REG_BIT(25) /* display 10, 11 and 12 */ +#define EDP_PSR2_SU_SDP_SCANLINE REG_BIT(25) /* display 13+ */ #define EDP_MAX_SU_DISABLE_TIME(t) ((t) << 20) #define EDP_MAX_SU_DISABLE_TIME_MASK (0x1f << 20) #define EDP_PSR2_IO_BUFFER_WAKE_MAX_LINES 8 |