Re: [PATCH v8 5/7] drm/i915: Introduce for_each_dbuf_slice_in_mask macro

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On Thu, May 14, 2020 at 06:21:43PM +0300, Stanislav Lisovskiy wrote:
> We quite often need now to iterate only particular dbuf slices
> in mask, whether they are active or related to particular crtc.
> 
> v2: - Minor code refactoring
> v3: - Use enum for max slices instead of macro
> 
> Let's make our life a bit easier and use a macro for that.
> 
> Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@xxxxxxxxx>

Reviewed-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>

Manasi

> ---
>  drivers/gpu/drm/i915/display/intel_display.h       | 7 +++++++
>  drivers/gpu/drm/i915/display/intel_display_power.h | 1 +
>  2 files changed, 8 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.h b/drivers/gpu/drm/i915/display/intel_display.h
> index efb4da205ea2..b7a6d56bac5f 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.h
> +++ b/drivers/gpu/drm/i915/display/intel_display.h
> @@ -187,6 +187,13 @@ enum plane_id {
>  	for ((__p) = PLANE_PRIMARY; (__p) < I915_MAX_PLANES; (__p)++) \
>  		for_each_if((__crtc)->plane_ids_mask & BIT(__p))
>  
> +#define for_each_dbuf_slice_in_mask(__slice, __mask) \
> +	for ((__slice) = DBUF_S1; (__slice) < I915_MAX_DBUF_SLICES; (__slice)++) \
> +		for_each_if((BIT(__slice)) & (__mask))
> +
> +#define for_each_dbuf_slice(__slice) \
> +	for_each_dbuf_slice_in_mask(__slice, BIT(I915_MAX_DBUF_SLICES) - 1)
> +
>  enum port {
>  	PORT_NONE = -1,
>  
> diff --git a/drivers/gpu/drm/i915/display/intel_display_power.h b/drivers/gpu/drm/i915/display/intel_display_power.h
> index 6c917699293b..4d0d6f9dad26 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_power.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_power.h
> @@ -314,6 +314,7 @@ intel_display_power_put_async(struct drm_i915_private *i915,
>  enum dbuf_slice {
>  	DBUF_S1,
>  	DBUF_S2,
> +	I915_MAX_DBUF_SLICES
>  };
>  
>  #define with_intel_display_power(i915, domain, wf) \
> -- 
> 2.24.1.485.gad05a3d8e5
> 
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