diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index d01a800f8a3..91631bf354e 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4143,6 +4143,7 @@ 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 = @@ -4156,8 +4157,13 @@ 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. |