[PATCH 08/10] drm/i915/gen9: Add skl_wm_level_equals()

[Paulo Zanoni]

Em Sex, 2016-10-07 às 20:11 -0400, Lyude escreveu:
> Helper we're going to be using for implementing verification of the
> wm
> levels in skl_verify_wm_level().
> 
> Signed-off-by: Lyude <cpaul at redhat.com>

Reviewed-by: Paulo Zanoni <paulo.r.zanoni at intel.com>

> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Cc: Paulo Zanoni <paulo.r.zanoni at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_drv.h |  2 ++
>  drivers/gpu/drm/i915/intel_pm.c  | 14 ++++++++++++++
>  2 files changed, 16 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_drv.h
> b/drivers/gpu/drm/i915/intel_drv.h
> index 73a2d16d..3e6e9af 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -1761,6 +1761,8 @@ void skl_pipe_wm_get_hw_state(struct drm_crtc
> *crtc,
>  bool intel_can_enable_sagv(struct drm_atomic_state *state);
>  int intel_enable_sagv(struct drm_i915_private *dev_priv);
>  int intel_disable_sagv(struct drm_i915_private *dev_priv);
> +bool skl_wm_level_equals(const struct skl_wm_level *l1,
> +                      const struct skl_wm_level *l2);
>  bool skl_ddb_allocation_equals(const struct skl_ddb_allocation *old,
>                             const struct skl_ddb_allocation *new,
>                             enum pipe pipe);
> diff --git a/drivers/gpu/drm/i915/intel_pm.c
> b/drivers/gpu/drm/i915/intel_pm.c
> index 27a520ce..6af1587 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -3853,6 +3853,20 @@ void skl_write_cursor_wm(struct intel_crtc
> *intel_crtc,
>                          &ddb->plane[pipe][PLANE_CURSOR]);
>  }
>  
> +bool skl_wm_level_equals(const struct skl_wm_level *l1,
> +                      const struct skl_wm_level *l2)
> +{
> +     if (l1->plane_en != l2->plane_en)
> +             return false;
> +
> +     /* If both planes aren't enabled, the rest shouldn't matter
> */
> +     if (!l1->plane_en)
> +             return true;
> +
> +     return (l1->plane_res_l == l2->plane_res_l &&
> +             l1->plane_res_b == l2->plane_res_b);
> +}
> +
>  static inline bool skl_ddb_entries_overlap(const struct
> skl_ddb_entry *a,
>                                         const struct
> skl_ddb_entry *b)
>  {