On Mon, Mar 28, 2022 at 07:10:25PM +0300, Vinod Govindapillai wrote:
> DG2 has a constant bandwidth regardless of the number of planes
> enabled. Handle the DG2 bw separately.
> 
> cc: Ville Syrjälä <[email protected]>
> cc: Stanislav Lisovskiy <[email protected]>
> 
> Signed-off-by: Vinod Govindapillai <[email protected]>
> ---
>  drivers/gpu/drm/i915/display/intel_bw.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_bw.c 
> b/drivers/gpu/drm/i915/display/intel_bw.c
> index ac11ff19e47d..8955f9f8476a 100644
> --- a/drivers/gpu/drm/i915/display/intel_bw.c
> +++ b/drivers/gpu/drm/i915/display/intel_bw.c
> @@ -1003,7 +1003,9 @@ int intel_bw_atomic_check(struct intel_atomic_state 
> *state)
>       for (i = 0; i < num_qgv_points; i++) {
>               unsigned int max_data_rate;
>  
> -             if (DISPLAY_VER(dev_priv) > 11)
> +             if (IS_DG2(dev_priv))
> +                     max_data_rate = dev_priv->max_bw[0].deratedbw[0];

Are you saying tgl_max_bw() doesn't actually work for dg2?

> +             else if (DISPLAY_VER(dev_priv) > 11)
>                       max_data_rate = tgl_max_bw(dev_priv, num_active_planes, 
> i);
>               else
>                       max_data_rate = icl_max_bw(dev_priv, num_active_planes, 
> i);
> -- 
> 2.25.1

-- 
Ville Syrjälä
Intel

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