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drm/i915/psr: Deactivate PSR only on LNL and when selective fetch enabled

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Using intel_psr_exit in frontbuffer flush on older platforms seems to be
causing problems.

Sending single full frame update using intel_psr_force_update is anyways
more optimal compared to psr deactivate/activate -> move back to this
approach on PSR1, PSR HW tracking and Panel Replay full frame update and
use deactivate/activate only on LunarLake and only when selective fetch is
enabled.

Tested-by: Lemen <lemen@lemen.xyz>
Tested-by: Koos Vriezen <koos.vriezen@gmail.com>
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/14946
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Link: https://lore.kernel.org/r/20250922102725.2752742-1-jouni.hogander@intel.com
This commit is contained in:
Jouni Högander 2025-09-22 13:27:25 +03:00
parent 40ac9b3eb0
commit 924adb0bbd
1 changed files with 10 additions and 2 deletions
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12
drivers/gpu/drm/i915/display/intel_psr.c
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@ -3402,6 +3402,7 @@ static void _psr_flush_handle(struct intel_dp *intel_dp)
struct intel_display *display = to_intel_display(intel_dp);
if (DISPLAY_VER(display) < 20 && intel_dp->psr.psr2_sel_fetch_enabled) {
/* Selective fetch prior LNL */
if (intel_dp->psr.psr2_sel_fetch_cff_enabled) {
/* can we turn CFF off? */
if (intel_dp->psr.busy_frontbuffer_bits == 0)
@ -3420,12 +3421,19 @@ static void _psr_flush_handle(struct intel_dp *intel_dp)
intel_psr_configure_full_frame_update(intel_dp);
intel_psr_force_update(intel_dp);
} else if (!intel_dp->psr.psr2_sel_fetch_enabled) {
/*
* PSR1 on all platforms
* PSR2 HW tracking
* Panel Replay Full frame update
*/
intel_psr_force_update(intel_dp);
} else {
/* Selective update LNL onwards */
intel_psr_exit(intel_dp);
}
if ((!intel_dp->psr.psr2_sel_fetch_enabled || DISPLAY_VER(display) >= 20) &&
!intel_dp->psr.busy_frontbuffer_bits)
if (!intel_dp->psr.active && !intel_dp->psr.busy_frontbuffer_bits)
queue_work(display->wq.unordered, &intel_dp->psr.work);
}