In LunarLake we have SFF_CTL register which contains SFF bit ored with respective SFF bit in PSR2_MAN_TRK_CTL register. Use this register instead of the bit in PSR2_MAN_TRK_CTL on frontbuffer tracking callbacks. This helps us avoiding taking psr mutex when performing atomic commit. We don't need to set the CFF bit as selective update configuration in PSR2_MAN_TRL_CTL is not overwritten anymore. I.e. we have valid configuration in PSR2_MAN_TRK_CTL and in plane SEL_FETCH_* registers when SFF bit gets cleared by the HW in case something triggers "frame change" event after SFF bit is cleared. Signed-off-by: Jouni Högander <jouni.hogander@xxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_psr.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index 8aa2574ba5c9..bca5ed4f76ba 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -2347,7 +2347,7 @@ void intel_psr2_program_trans_man_trk_ctl(const struct intel_crtc_state *crtc_st struct intel_dp *intel_dp = enc_to_intel_dp(encoder); lockdep_assert_held(&intel_dp->psr.lock); - if (intel_dp->psr.psr2_sel_fetch_cff_enabled) + if (DISPLAY_VER(display) < 20 && intel_dp->psr.psr2_sel_fetch_cff_enabled) return; break; } @@ -3133,12 +3133,16 @@ static void intel_psr_configure_full_frame_update(struct intel_dp *intel_dp) drm_crtc_vblank_put(&crtc->base); - intel_de_write(display, - PSR2_MAN_TRK_CTL(display, cpu_transcoder), - man_trk_ctl_enable_bit_get(display) | - man_trk_ctl_partial_frame_bit_get(display) | - man_trk_ctl_single_full_frame_bit_get(display) | - man_trk_ctl_continuos_full_frame(display)); + if (DISPLAY_VER(display) >= 20) + intel_de_write(display, LNL_SFF_CTL(display, cpu_transcoder), + LNL_SFF_CTL_SF_SINGLE_FULL_FRAME); + else + intel_de_write(display, + PSR2_MAN_TRK_CTL(display, cpu_transcoder), + man_trk_ctl_enable_bit_get(display) | + man_trk_ctl_partial_frame_bit_get(display) | + man_trk_ctl_single_full_frame_bit_get(display) | + man_trk_ctl_continuos_full_frame(display)); local_irq_enable(); } @@ -3244,6 +3248,10 @@ static void _psr_flush_handle(struct intel_dp *intel_dp) * Still keep cff bit enabled as we don't have proper SU * configuration in case update is sent for any reason after * sff bit gets cleared by the HW on next vblank. + * + * NOTE: Setting cff bit is not needed for LunarLake onwards as + * we have own register for SFF bit and we are not overwriting + * existing SU configuration */ intel_psr_configure_full_frame_update(intel_dp); } -- 2.34.1
