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drm/amd/display: Fix Xorg desktop unresponsive on Replay panel

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[WHY & HOW]
IPS & self-fresh feature can cause vblank counter resets between
vblank disable and enable.
It may cause system stuck due to wait the vblank counter.

Call the drm_crtc_vblank_restore() during vblank enable to estimate
missed vblanks by using timestamps and update the vblank counter in
DRM.

It can make the vblank counter increase smoothly and resolve this issue.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Sun peng (Leo) Li <sunpeng.li@amd.com>
Signed-off-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 34d66bc7ff10e146a4cec76cf286979740a10954)
Cc: stable@vger.kernel.org
This commit is contained in:
Tom Chung 2025-07-18 18:25:08 +08:00 committed by Alex Deucher
parent 07b93a5704
commit 66af73a1c3
1 changed files with 19 additions and 0 deletions
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19
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c
View File

@ -299,6 +299,25 @@ static inline int amdgpu_dm_crtc_set_vblank(struct drm_crtc *crtc, bool enable)
irq_type = amdgpu_display_crtc_idx_to_irq_type(adev, acrtc->crtc_id);
if (enable) {
struct dc *dc = adev->dm.dc;
struct drm_vblank_crtc *vblank = drm_crtc_vblank_crtc(crtc);
struct psr_settings *psr = &acrtc_state->stream->link->psr_settings;
struct replay_settings *pr = &acrtc_state->stream->link->replay_settings;
bool sr_supported = (psr->psr_version != DC_PSR_VERSION_UNSUPPORTED) ||
pr->config.replay_supported;
/*
* IPS & self-refresh feature can cause vblank counter resets between
* vblank disable and enable.
* It may cause system stuck due to waiting for the vblank counter.
* Call this function to estimate missed vblanks by using timestamps and
* update the vblank counter in DRM.
*/
if (dc->caps.ips_support &&
dc->config.disable_ips != DMUB_IPS_DISABLE_ALL &&
sr_supported && vblank->config.disable_immediate)
drm_crtc_vblank_restore(crtc);
/* vblank irq on -> Only need vupdate irq in vrr mode */
if (amdgpu_dm_crtc_vrr_active(acrtc_state))
rc = amdgpu_dm_crtc_set_vupdate_irq(crtc, true);