Re: [Intel-gfx] [PATCH 06/14] drm/i915: Split g4x_compute_pipe_wm() into two

["Lisovskiy, Stanislav" <stanislav.lisovskiy@intel.com>]

On Fri, May 14, 2021 at 03:57:43PM +0300, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> Split g4x_compute_pipe_wm() into two halves. The first half computes
> the new raw watermarks, and the second half munges those up into real
> watermarks for the particular pipe.
> 
> We can reuse the second half for watermark sanitation as well.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_pm.c | 52 +++++++++++++++++++--------------
>  1 file changed, 30 insertions(+), 22 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 990ee5a590d3..59a22e1ee5bf 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -1366,34 +1366,14 @@ static bool g4x_compute_fbc_en(const struct g4x_wm_state *wm_state,
>  	return true;
>  }
>  
> -static int g4x_compute_pipe_wm(struct intel_crtc_state *crtc_state)
> +static int _g4x_compute_pipe_wm(struct intel_crtc_state *crtc_state)
>  {
>  	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> -	struct intel_atomic_state *state =
> -		to_intel_atomic_state(crtc_state->uapi.state);
>  	struct g4x_wm_state *wm_state = &crtc_state->wm.g4x.optimal;
>  	u8 active_planes = crtc_state->active_planes & ~BIT(PLANE_CURSOR);
>  	const struct g4x_pipe_wm *raw;
> -	const struct intel_plane_state *old_plane_state;
> -	const struct intel_plane_state *new_plane_state;
> -	struct intel_plane *plane;
>  	enum plane_id plane_id;
> -	int i, level;
> -	unsigned int dirty = 0;
> -
> -	for_each_oldnew_intel_plane_in_state(state, plane,
> -					     old_plane_state,
> -					     new_plane_state, i) {
> -		if (new_plane_state->hw.crtc != &crtc->base &&
> -		    old_plane_state->hw.crtc != &crtc->base)
> -			continue;
> -
> -		if (g4x_raw_plane_wm_compute(crtc_state, new_plane_state))
> -			dirty |= BIT(plane->id);
> -	}
> -
> -	if (!dirty)
> -		return 0;
> +	int level;
>  
>  	level = G4X_WM_LEVEL_NORMAL;
>  	if (!g4x_raw_crtc_wm_is_valid(crtc_state, level))
> @@ -1446,6 +1426,34 @@ static int g4x_compute_pipe_wm(struct intel_crtc_state *crtc_state)
>  	return 0;
>  }
>  
> +static int g4x_compute_pipe_wm(struct intel_crtc_state *crtc_state)
> +{
> +	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> +	struct intel_atomic_state *state =
> +		to_intel_atomic_state(crtc_state->uapi.state);
> +	const struct intel_plane_state *old_plane_state;
> +	const struct intel_plane_state *new_plane_state;
> +	struct intel_plane *plane;
> +	unsigned int dirty = 0;
> +	int i;
> +
> +	for_each_oldnew_intel_plane_in_state(state, plane,
> +					     old_plane_state,
> +					     new_plane_state, i) {
> +		if (new_plane_state->hw.crtc != &crtc->base &&
> +		    old_plane_state->hw.crtc != &crtc->base)
> +			continue;
> +
> +		if (g4x_raw_plane_wm_compute(crtc_state, new_plane_state))
> +			dirty |= BIT(plane->id);
> +	}
> +
> +	if (!dirty)
> +		return 0;
> +
> +	return _g4x_compute_pipe_wm(crtc_state);
> +}
> +

Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>

>  static int g4x_compute_intermediate_wm(struct intel_crtc_state *new_crtc_state)
>  {
>  	struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
> -- 
> 2.26.3
> 
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