Re: [Intel-gfx] [PATCH v22 04/13] drm/i915: Add intel_atomic_get_bw_*_state helpers

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Thu, Apr 09, 2020 at 06:47:21PM +0300, Stanislav Lisovskiy wrote:
> Add correspondent helpers to be able to get old/new bandwidth
> global state object.
> 
> v2: - Fixed typo in function call
> v3: - Changed new functions naming to use convention proposed
>       by Jani Nikula, i.e intel_bw_* in intel_bw.c file.
> v4: - Change function naming back to intel_atomic* pattern,
>       was decided to rename in a separate patch series.
> v5: - Fix function naming to match existing practices(Ville)
> v6: - Removed spurious whitespace
> 
> Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_bw.c | 28 ++++++++++++++++++++++++-
>  drivers/gpu/drm/i915/display/intel_bw.h |  9 ++++++++
>  2 files changed, 36 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c
> index 88f367eb28ea..96f86cfa91d4 100644
> --- a/drivers/gpu/drm/i915/display/intel_bw.c
> +++ b/drivers/gpu/drm/i915/display/intel_bw.c
> @@ -375,7 +375,33 @@ static unsigned int intel_bw_data_rate(struct drm_i915_private *dev_priv,
>  	return data_rate;
>  }
>  
> -static struct intel_bw_state *
> +struct intel_bw_state *
> +intel_atomic_get_old_bw_state(struct intel_atomic_state *state)
> +{
> +	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
> +	struct intel_global_state *bw_state;
> +
> +	bw_state = intel_atomic_get_old_global_obj_state(state, &dev_priv->bw_obj);
> +	if (!bw_state)
> +		return NULL;

This check isn't actually needed. I think in all the other cases we just
get_new_state()
{
	return to_foo_state(get_new_state());
}

See eg. intel_atomic_get_new_{crtc,plane}_state()

Would be nice to be consistent.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>


> +
> +	return to_intel_bw_state(bw_state);
> +}
> +
> +struct intel_bw_state *
> +intel_atomic_get_new_bw_state(struct intel_atomic_state *state)
> +{
> +	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
> +	struct intel_global_state *bw_state;
> +
> +	bw_state = intel_atomic_get_new_global_obj_state(state, &dev_priv->bw_obj);
> +	if (!bw_state)
> +		return NULL;
> +
> +	return to_intel_bw_state(bw_state);
> +}
> +
> +struct intel_bw_state *
>  intel_atomic_get_bw_state(struct intel_atomic_state *state)
>  {
>  	struct drm_i915_private *dev_priv = to_i915(state->base.dev);
> diff --git a/drivers/gpu/drm/i915/display/intel_bw.h b/drivers/gpu/drm/i915/display/intel_bw.h
> index a8aa7624c5aa..ac004d6f4276 100644
> --- a/drivers/gpu/drm/i915/display/intel_bw.h
> +++ b/drivers/gpu/drm/i915/display/intel_bw.h
> @@ -24,6 +24,15 @@ struct intel_bw_state {
>  
>  #define to_intel_bw_state(x) container_of((x), struct intel_bw_state, base)
>  
> +struct intel_bw_state *
> +intel_atomic_get_old_bw_state(struct intel_atomic_state *state);
> +
> +struct intel_bw_state *
> +intel_atomic_get_new_bw_state(struct intel_atomic_state *state);
> +
> +struct intel_bw_state *
> +intel_atomic_get_bw_state(struct intel_atomic_state *state);
> +
>  void intel_bw_init_hw(struct drm_i915_private *dev_priv);
>  int intel_bw_init(struct drm_i915_private *dev_priv);
>  int intel_bw_atomic_check(struct intel_atomic_state *state);
> -- 
> 2.24.1.485.gad05a3d8e5

-- 
Ville Syrjälä
Intel
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