[PATCH] drm/i915/psr: Implement WA to help reach PC10

[Jani Nikula]

On Sun, 06 Oct 2024, Suraj Kandpal <suraj.kandpal at intel.com> wrote:
> +static bool
> +intel_psr_is_dc5_entry_possible(struct intel_display *display,
> +				struct intel_crtc_state *crtc_state)
> +{
> +	struct intel_crtc *intel_crtc;

Always struct intel_crtc *crtc;

> +
> +	if ((display->power.domains.target_dc_state &
> +	     DC_STATE_EN_UPTO_DC5_DC6_MASK) == 0)
> +		return false;
> +
> +	if (!crtc_state->has_psr && !crtc_state->has_sel_update &&
> +	    !crtc_state->has_panel_replay)
> +		return false;
> +
> +	for_each_intel_crtc(display->drm, intel_crtc) {
> +		struct drm_crtc *crtc = &intel_crtc->base;

Just don't add struct drm_crtc local variables, so you don't get the
name conflict.

> +		struct drm_vblank_crtc *vblank;
> +		struct intel_encoder *encoder;
> +
> +		if (!intel_crtc->active)
> +			continue;
> +
> +		vblank = drm_crtc_vblank_crtc(crtc);
> +
> +		if (vblank->enabled)
> +			return false;
> +
> +		for_each_encoder_on_crtc(display->drm, crtc, encoder)
> +			if (encoder->type != INTEL_OUTPUT_EDP ||
> +			    !CAN_PSR(enc_to_intel_dp(encoder)))
> +				return false;
> +	}
> +
> +	return true;
> +}
> +

[snip]

> +void intel_psr_compute_config_late(struct intel_encoder *intel_encoder,

Always struct intel_encoder *encoder;

> +				   struct intel_crtc_state *crtc_state)
> +{
> +	struct intel_display *display = to_intel_display(intel_encoder);
> +	struct intel_dp *dp = enc_to_intel_dp(intel_encoder);

Always struct intel_dp *intel_dp;

> +
> +	if (DISPLAY_VER(display) == 20) {
> +		mutex_lock(&dp->psr.lock);
> +		dp->psr.is_dpkgc_configured =
> +			intel_psr_is_dpkgc_configured(display, crtc_state);
> +		dp->psr.is_dc5_entry_possible =
> +			intel_psr_is_dc5_entry_possible(display, crtc_state);
> +		dp->psr.is_wa_delayed_vblank_limit =
> +			intel_psr_check_wa_delayed_vblank(&crtc_state->hw.adjusted_mode);
> +		mutex_unlock(&dp->psr.lock);
> +	}
> +}
> +

-- 
Jani Nikula, Intel