[Intel-gfx] [PATCH 2/7] drm/i915/mtl: Add DP rates

[Govindapillai, Vinod]

On Mon, 2023-03-27 at 15:34 +0300, Mika Kahola wrote:
> Add DP rates for Meteorlake.
> 
> Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
> Signed-off-by: Mika Kahola <mika.kahola at intel.com>
> ---

Reviewed-by: Vinod Govindapillai <vinod.govindapillai at intel.com>


>  drivers/gpu/drm/i915/display/intel_dp.c | 15 ++++++++++++++-
>  1 file changed, 14 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index da1c00ee92fb..4927aeb64f23 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -420,6 +420,11 @@ static int ehl_max_source_rate(struct intel_dp *intel_dp)
>         return 810000;
>  }
>  
> +static int mtl_max_source_rate(struct intel_dp *intel_dp)
> +{
> +       return intel_dp_is_edp(intel_dp) ? 675000 : 810000;
> +}
> +
>  static int vbt_max_link_rate(struct intel_dp *intel_dp)
>  {
>         struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
> @@ -444,6 +449,10 @@ static void
>  intel_dp_set_source_rates(struct intel_dp *intel_dp)
>  {
>         /* The values must be in increasing order */
> +       static const int mtl_rates[] = {
> +               162000, 216000, 243000, 270000, 324000, 432000, 540000, 675000,
> +               810000,
> +       };
>         static const int icl_rates[] = {
>                 162000, 216000, 270000, 324000, 432000, 540000, 648000, 810000,
>                 1000000, 1350000,
> @@ -469,7 +478,11 @@ intel_dp_set_source_rates(struct intel_dp *intel_dp)
>         drm_WARN_ON(&dev_priv->drm,
>                     intel_dp->source_rates || intel_dp->num_source_rates);
>  
> -       if (DISPLAY_VER(dev_priv) >= 11) {
> +       if (DISPLAY_VER(dev_priv) >= 14) {
> +               source_rates = mtl_rates;
> +               size = ARRAY_SIZE(mtl_rates);
> +               max_rate = mtl_max_source_rate(intel_dp);
> +       } else if (DISPLAY_VER(dev_priv) >= 11) {
>                 source_rates = icl_rates;
>                 size = ARRAY_SIZE(icl_rates);
>                 if (IS_DG2(dev_priv))