drm/i915: DisplayPort pixel clock check
authorMika Kahola <mika.kahola@intel.com>
Tue, 2 Feb 2016 13:16:38 +0000 (15:16 +0200)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Thu, 11 Feb 2016 09:15:24 +0000 (10:15 +0100)
commit799487f51d7419e33736d81b0b9087b2aaa593af
treec8c4e4ec1ae2a4825637bcaeefb824196331ea0b
parentff3dc0875cfa37851b9902c014b9eaa2f697400c
drm/i915: DisplayPort pixel clock check

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 DisplayPort.

V2:
- removed computation for max DOT clock

V3:
- cleanup by removing unnecessary lines

V4:
- max_pixclk renamed as max_dotclk

Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1454419003-6001-2-git-send-email-mika.kahola@intel.com
drivers/gpu/drm/i915/intel_dp.c