| Message ID | 1439546611-3191-9-git-send-email-mika.kahola@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c index 0568ae6..62ae1f1 100644 --- a/drivers/gpu/drm/i915/intel_tv.c +++ b/drivers/gpu/drm/i915/intel_tv.c @@ -897,6 +897,10 @@ intel_tv_mode_valid(struct drm_connector *connector, { struct intel_tv *intel_tv = intel_attached_tv(connector); const struct tv_mode *tv_mode = intel_tv_mode_find(intel_tv); + int max_dotclk = to_i915(connector->dev)->max_dotclk_freq; + + if (mode->clock > max_dotclk) + return MODE_CLOCK_HIGH; /* Ensure TV refresh is close to desired refresh */ if (tv_mode && abs(tv_mode->refresh - drm_mode_vrefresh(mode) * 1000)
It is possible the we request to have a mode that has higher pixel clock than our HW can support. This patch checks if requested pixel clock is lower than the one supported by the HW. The requested mode is discarded if we cannot support the requested pixel clock. This patch applies to TV. V2: - removed computation for max pixel clock V3: - cleanup by removing unnecessary lines V4: - max_pixclk variable renamed as max_dotclk Signed-off-by: Mika Kahola <mika.kahola@intel.com> --- drivers/gpu/drm/i915/intel_tv.c | 4 ++++ 1 file changed, 4 insertions(+)