> Subject: [PATCH 2/2] drm/i915/psr: Compute psr_entry_setup_frames into
> intel_crtc_state
> 
> Psr_entry_setup_frames is currently computed directly into struct

Should this be PSR entry_setup_frames. Since Psr_entry_setup_frames does not 
exist.
With that fixed LGTM,
Reviewed-by: Suraj Kandpal <[email protected]>

> intel_dp:intel_psr:entry_setup_frames. This causes a problem if mode change
> gets rejected after PSR compute config: Psr_entry_setup_frames computed for
> this rejected state is in intel_dp:intel_psr:entry_setup_frame. Fix this by
> computing it into intel_crtc_state and copy the value into
> intel_dp:intel_psr:entry_setup_frames on PSR enable.
> 
> Fixes: 2b981d57e480 ("drm/i915/display: Support PSR entry VSC packet to be
> transmitted one frame earlier")
> Cc: Mika Kahola <[email protected]>
> Cc: <[email protected]> # v6.8+
> Signed-off-by: Jouni Högander <[email protected]>
> ---
>  drivers/gpu/drm/i915/display/intel_display_types.h | 1 +
>  drivers/gpu/drm/i915/display/intel_psr.c           | 5 +++--
>  2 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h
> b/drivers/gpu/drm/i915/display/intel_display_types.h
> index e189f8c39ccb..d3a9ace4c9d1 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -1188,6 +1188,7 @@ struct intel_crtc_state {
>       u32 dc3co_exitline;
>       u16 su_y_granularity;
>       u8 active_non_psr_pipes;
> +     u8 entry_setup_frames;
>       const char *no_psr_reason;
> 
>       /*
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> b/drivers/gpu/drm/i915/display/intel_psr.c
> index 7e0e4c3bf985..c13116e6f17f 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -1716,7 +1716,7 @@ static bool _psr_compute_config(struct intel_dp
> *intel_dp,
>       entry_setup_frames = intel_psr_entry_setup_frames(intel_dp,
> conn_state, adjusted_mode);
> 
>       if (entry_setup_frames >= 0) {
> -             intel_dp->psr.entry_setup_frames = entry_setup_frames;
> +             crtc_state->entry_setup_frames = entry_setup_frames;
>       } else {
>               crtc_state->no_psr_reason = "PSR setup timing not met";
>               drm_dbg_kms(display->drm,
> @@ -1814,7 +1814,7 @@ static bool intel_psr_needs_wa_18037818876(struct
> intel_dp *intel_dp,  {
>       struct intel_display *display = to_intel_display(intel_dp);
> 
> -     return (DISPLAY_VER(display) == 20 && intel_dp-
> >psr.entry_setup_frames > 0 &&
> +     return (DISPLAY_VER(display) == 20 && crtc_state-
> >entry_setup_frames >
> +0 &&
>               !crtc_state->has_sel_update);
>  }
> 
> @@ -2190,6 +2190,7 @@ static void intel_psr_enable_locked(struct intel_dp
> *intel_dp,
>       intel_dp->psr.pkg_c_latency_used = crtc_state->pkg_c_latency_used;
>       intel_dp->psr.io_wake_lines = crtc_state->alpm_state.io_wake_lines;
>       intel_dp->psr.fast_wake_lines = crtc_state->alpm_state.fast_wake_lines;
> +     intel_dp->psr.entry_setup_frames = crtc_state->entry_setup_frames;
> 
>       if (!psr_interrupt_error_check(intel_dp))
>               return;
> --
> 2.43.0

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