diff options
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_display_types.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_psr.c | 29 |
2 files changed, 32 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 ce75b7d55a8a..01eb6e4e6049 100644 --- a/drivers/gpu/drm/i915/display/intel_display_types.h +++ b/drivers/gpu/drm/i915/display/intel_display_types.h @@ -1716,6 +1716,9 @@ struct intel_psr { struct { u8 io_wake_lines; u8 fast_wake_lines; + + /* LNL and beyond */ + u8 check_entry_lines; } alpm_parameters; ktime_t last_entry_attempt; diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 4bca1107997f..7aedda0ca2d2 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -1126,6 +1126,30 @@ static bool _compute_psr2_sdp_prior_scanline_indication(struct intel_dp *intel_d return true; } +static bool _lnl_compute_alpm_params(struct intel_dp *intel_dp, + struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *i915 = dp_to_i915(intel_dp); + int check_entry_lines; + + if (DISPLAY_VER(i915) < 20) + return true; + + /* ALPM Entry Check = 2 + CEILING( 5us /tline ) */ + check_entry_lines = 2 + + intel_usecs_to_scanlines(&crtc_state->hw.adjusted_mode, 5); + + if (check_entry_lines > 15) + return false; + + if (i915->display.params.psr_safest_params) + check_entry_lines = 15; + + intel_dp->psr.alpm_parameters.check_entry_lines = check_entry_lines; + + return true; +} + static bool _compute_alpm_params(struct intel_dp *intel_dp, struct intel_crtc_state *crtc_state) { @@ -1140,6 +1164,8 @@ static bool _compute_alpm_params(struct intel_dp *intel_dp, * it is not enough -> use 45 us. */ fast_wake_time = 45; + + /* TODO: Check how we can use ALPM_CTL fast wake extended field */ max_wake_lines = 12; } else { io_wake_time = 50; @@ -1156,6 +1182,9 @@ static bool _compute_alpm_params(struct intel_dp *intel_dp, fast_wake_lines > max_wake_lines) return false; + if (!_lnl_compute_alpm_params(intel_dp, crtc_state)) + return false; + if (i915->display.params.psr_safest_params) io_wake_lines = fast_wake_lines = max_wake_lines; |