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drm/i915/psr: Disable psr1 if setup_time > vblank

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Issue is seen when PSR enabled with setup frames and when try to disable
PSR at SRDONACK State (0x1). PSR FSM is stuck at SRDONACK(0x1) for more
than 5 seconds. Issue not seen with Setup frames disabled. Currently
disable psr1 if setuptime > vblank to workaround the above issue.

HSD: 16024594674
WA: 18037818876

v1: Initial version
v2: Add debug log and some cosmetic changes. [Jouni, Jani, Nemesa]

Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241105103916.1857731-1-animesh.manna@intel.com
This commit is contained in:
Animesh Manna
2024-11-05 16:09:16 +05:30
parent d58f65df2d
commit ca596b781a
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/i915/display/intel_psr.c
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@@ -1637,6 +1637,15 @@ _panel_replay_compute_config(struct intel_dp *intel_dp,
return true;
}
static bool intel_psr_needs_wa_18037818876(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state)
{
struct intel_display *display = to_intel_display(intel_dp);
return (DISPLAY_VER(display) == 20 && intel_dp->psr.entry_setup_frames > 0 &&
!crtc_state->has_sel_update);
}
void intel_psr_compute_config(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
@@ -1689,6 +1698,13 @@ void intel_psr_compute_config(struct intel_dp *intel_dp,
return;
crtc_state->has_sel_update = intel_sel_update_config_valid(intel_dp, crtc_state);
/* Wa_18037818876 */
if (intel_psr_needs_wa_18037818876(intel_dp, crtc_state)) {
crtc_state->has_psr = false;
drm_dbg_kms(display->drm,
"PSR disabled to workaround PSR FSM hang issue\n");
}
}
void intel_psr_get_config(struct intel_encoder *encoder,