Re: [CI] drm/i915/dp: Dump the LTTPR PHY descriptors

[Jani Nikula <jani.nikula@linux.intel.com>]

On Mon, 09 Sep 2024, Imre Deak <imre.deak@intel.com> wrote:
> Dump the descriptor of the detected LTTPRs in non-transparent mode to
> help the debugging related to LTTPRs easier.
>
> v2: Use drm_dp_dump_lttpr_desc() instead of the driver specific
>     equivalent.
> v3: Add empty line between license and header section. (Ankit)
>
> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> # v1
> Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
> Signed-off-by: Imre Deak <imre.deak@intel.com>
> ---
>
> Resending [1] now, after the corresponding DRM core helper is merged to
> drm-intel-next.
>
> [1] https://lore.kernel.org/all/20240708190029.271247-7-imre.deak@intel.com
>
>  drivers/gpu/drm/i915/display/intel_dp_link_training.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp_link_training.c b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
> index f45797c1a2051..b7bd8135c1138 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp_link_training.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp_link_training.c
> @@ -21,6 +21,8 @@
>   * IN THE SOFTWARE.
>   */
>  
> +#include <drm/display/drm_dp_helper.h>
> +
>  #include <linux/debugfs.h>
>  
>  #include <drm/display/drm_dp_helper.h>

It's already here now.

BR,
Jani.

> @@ -210,8 +212,10 @@ static int intel_dp_init_lttpr(struct intel_dp *intel_dp, const u8 dpcd[DP_RECEI
>  
>  	lttpr_count = intel_dp_init_lttpr_phys(intel_dp, dpcd);
>  
> -	for (i = 0; i < lttpr_count; i++)
> +	for (i = 0; i < lttpr_count; i++) {
>  		intel_dp_read_lttpr_phy_caps(intel_dp, dpcd, DP_PHY_LTTPR(i));
> +		drm_dp_dump_lttpr_desc(&intel_dp->aux, DP_PHY_LTTPR(i));
> +	}
>  
>  	return lttpr_count;
>  }

-- 
Jani Nikula, Intel