drm/i915: Use adjusted_mode in intel_update_fbc()

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@linux.intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index c1b601a..e5f7e56 100644 (file)
--- 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;