diff options
| author | Tom Chung <chiahsuan.chung@amd.com> | 2025-07-18 18:25:08 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:31:06 +0200 |
| commit | 34f2e0bb85c27385cd741586d3d4a7c90289e977 (patch) | |
| tree | 0bb38fe35caf7b2e30dd4f00f7107ab712ec4b73 | |
| parent | 88d5d27264ef90ab65537fa75c1085865bca881b (diff) | |
drm/amd/display: Fix Xorg desktop unresponsive on Replay panel
commit 66af73a1c319336694a8610fe4c2943f7b33066c upstream.
[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
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c index af53366051ab..2d3e62703274 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c @@ -302,6 +302,25 @@ 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); |