Re: [PATCH 04/14] drm/i915: Use adjusted_mode in intel_update_fbc()

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On Wed, Sep 04, 2013 at 06:25:21PM +0300, ville.syrjala@xxxxxxxxxxxxxxx wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> 
> Check the mode flags from the adjusted_mode, not user requested mode.
> The hdisplay/vdisplay check actually checkes the primary plane size,
> so those still need to come from the user requested mode.
> 
> Extract both modes from pipe config instead of the drm_crtc.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Reviewed-by: Damien Lespiau <damien.lespiau@xxxxxxxxx>

-- 
Damien

> ---
>  drivers/gpu/drm/i915/intel_pm.c | 12 ++++++++----
>  1 file changed, 8 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 0c115cc..af1f4de 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -458,6 +458,8 @@ void intel_update_fbc(struct drm_device *dev)
>  	struct drm_framebuffer *fb;
>  	struct intel_framebuffer *intel_fb;
>  	struct drm_i915_gem_object *obj;
> +	const struct drm_display_mode *mode;
> +	const struct drm_display_mode *adjusted_mode;
>  	unsigned int max_hdisplay, max_vdisplay;
>  
>  	if (!I915_HAS_FBC(dev)) {
> @@ -502,6 +504,8 @@ void intel_update_fbc(struct drm_device *dev)
>  	fb = crtc->fb;
>  	intel_fb = to_intel_framebuffer(fb);
>  	obj = intel_fb->obj;
> +	mode = &intel_crtc->config.requested_mode;
> +	adjusted_mode = &intel_crtc->config.adjusted_mode;
>  
>  	if (i915_enable_fbc < 0 &&
>  	    INTEL_INFO(dev)->gen <= 7 && !IS_HASWELL(dev)) {
> @@ -514,8 +518,8 @@ void intel_update_fbc(struct drm_device *dev)
>  			DRM_DEBUG_KMS("fbc disabled per module param\n");
>  		goto out_disable;
>  	}
> -	if ((crtc->mode.flags & DRM_MODE_FLAG_INTERLACE) ||
> -	    (crtc->mode.flags & DRM_MODE_FLAG_DBLSCAN)) {
> +	if ((adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) ||
> +	    (adjusted_mode->flags & DRM_MODE_FLAG_DBLSCAN)) {
>  		if (set_no_fbc_reason(dev_priv, FBC_UNSUPPORTED_MODE))
>  			DRM_DEBUG_KMS("mode incompatible with compression, "
>  				      "disabling\n");
> @@ -529,8 +533,8 @@ void intel_update_fbc(struct drm_device *dev)
>  		max_hdisplay = 2048;
>  		max_vdisplay = 1536;
>  	}
> -	if ((crtc->mode.hdisplay > max_hdisplay) ||
> -	    (crtc->mode.vdisplay > max_vdisplay)) {
> +	if ((mode->hdisplay > max_hdisplay) ||
> +	    (mode->vdisplay > max_vdisplay)) {
>  		if (set_no_fbc_reason(dev_priv, FBC_MODE_TOO_LARGE))
>  			DRM_DEBUG_KMS("mode too large for compression, disabling\n");
>  		goto out_disable;
> -- 
> 1.8.1.5
> 
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