[Intel-gfx] [PATCH] drm/i915: debugfs: Add support for probing DP sink CRC.

[Damien Lespiau]

On Fri, Jan 24, 2014 at 01:36:17PM -0200, Rodrigo Vivi wrote:
> This debugfs interface will allow intel-gpu-tools test case
> to verify if screen has been updated properly on cases like PSR.
> 
> v2: Accepted all Daniel's suggestions:
>     * grab modeset lock
>     * loop over connector and check DPMS on
>     * return errors
>     * use _eDP1 suffix for easy future extension
>     * don't cache crc_supported neither latest crc
>     * return crc as a full array and read it at once with aux.
>     * use 0 to turn TEST_SINK off.
>     * split the drm_helpers definitions in another patch.
> 
> v3: Accepted 2 Damien's suggestion: remove h from printf hexa
>     and return ENODEV when eDP not present instead of EAGAIN.
> 
> v4: Accepted 2 Jani' s suggestion: 1 path for unlock and remove
>     _retry from aux read.
> 
> v5: removing last missing useless _retry (by Damien)
> 
> Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
> Cc: Damien Lespiau <damien.lespiau at intel.com>
> Cc: Jani Nikula <jani.nikula at intel.com>
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>


Reviewed-by: Damien Lespiau <damien.lespiau at intel.com>

-- 
Damien