[RFC v2 1/6] drm/i915/scaler: Add and compute scaling factors

[Nautiyal, Ankit K]

On 12/17/2024 11:37 PM, Mitul Golani wrote:
> Add scaling factors to scaler_state for a perticular scaler user,
> use it later to compute scaler prefill latency. Also to extend this
> when either pipe or plane scaler is in use.
>
> Signed-off-by: Mitul Golani <mitulkumar.ajitkumar.golani at intel.com>
> ---
>   drivers/gpu/drm/i915/display/intel_display_types.h | 2 ++
>   drivers/gpu/drm/i915/display/skl_scaler.c          | 3 +++
>   2 files changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
> index b71416ff5b7f..28b2861df42b 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -710,6 +710,8 @@ struct intel_initial_plane_config {
>   struct intel_scaler {
>   	u32 mode;
>   	bool in_use;
> +	int hscale;
> +	int vscale;

Probably should fill these in skl_scaler_get_config() and add in 
intel_pipe_config_compare() to compare.


Regards,

Ankit


>   };
>   
>   struct intel_crtc_scaler_state {
> diff --git a/drivers/gpu/drm/i915/display/skl_scaler.c b/drivers/gpu/drm/i915/display/skl_scaler.c
> index 11f73659c1b6..e00c6830ef65 100644
> --- a/drivers/gpu/drm/i915/display/skl_scaler.c
> +++ b/drivers/gpu/drm/i915/display/skl_scaler.c
> @@ -423,6 +423,9 @@ static int intel_atomic_setup_scaler(struct intel_crtc_scaler_state *scaler_stat
>   
>   			return -EINVAL;
>   		}
> +
> +		scaler_state->scalers[*scaler_id].hscale = hscale;
> +		scaler_state->scalers[*scaler_id].vscale = vscale;
>   	}
>   
>   	drm_dbg_kms(display->drm, "Attached scaler id %u.%u to %s:%d\n",