@@ -4121,6 +4121,7 @@ static int intel_crtc_compute_config(struct intel_crtc *crtc,
struct drm_device *dev = crtc->base.dev;
struct drm_display_mode *adjusted_mode = &pipe_config->adjusted_mode;
+ /* FIXME should check pixel clock limits on all platforms */
if (INTEL_INFO(dev)->gen < 4) {
struct drm_i915_private *dev_priv = dev->dev_private;
int clock_limit =
@@ -4134,8 +4135,13 @@ static int intel_crtc_compute_config(struct intel_crtc *crtc,
* the only reason for the pipe == PIPE_A check?
*/
if (crtc->pipe == PIPE_A &&
- adjusted_mode->clock > clock_limit * 9 / 10)
+ adjusted_mode->clock > clock_limit * 9 / 10) {
+ clock_limit *= 2;
pipe_config->double_wide = true;
+ }
+
+ if (adjusted_mode->clock > clock_limit * 9 / 10)
+ return -EINVAL;
}
/* Cantiga+ cannot handle modes with a hsync front porch of 0.