On Mon, Jan 20, 2020 at 07:47:26PM +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <[email protected]>
> 
> Extract a small helper to compute the active pipes bitmask
> based on the old bitmask + the crtcs in the atomic state.
> I want to decouple the cdclk state entirely from the current
> global state so I want to track the active pipes also inside
> the (to be introduced) full cdclk state.
> 
> Signed-off-by: Ville Syrjälä <[email protected]>

Reviewed-by: Imre Deak <[email protected]>

> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 34 ++++++++++++--------
>  drivers/gpu/drm/i915/display/intel_display.h |  3 ++
>  2 files changed, 23 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c 
> b/drivers/gpu/drm/i915/display/intel_display.c
> index f5396c5c00c6..dc767efffd9a 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -14359,26 +14359,32 @@ static int hsw_mode_set_planes_workaround(struct 
> intel_atomic_state *state)
>       return 0;
>  }
>  
> +u8 intel_calc_active_pipes(struct intel_atomic_state *state,
> +                        u8 active_pipes)
> +{
> +     const struct intel_crtc_state *crtc_state;
> +     struct intel_crtc *crtc;
> +     int i;
> +
> +     for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
> +             if (crtc_state->hw.active)
> +                     active_pipes |= BIT(crtc->pipe);
> +             else
> +                     active_pipes &= ~BIT(crtc->pipe);
> +     }
> +
> +     return active_pipes;
> +}
> +
>  static int intel_modeset_checks(struct intel_atomic_state *state)
>  {
>       struct drm_i915_private *dev_priv = to_i915(state->base.dev);
> -     struct intel_crtc_state *old_crtc_state, *new_crtc_state;
> -     struct intel_crtc *crtc;
> -     int ret, i;
> +     int ret;
>  
>       state->modeset = true;
> -     state->active_pipes = dev_priv->active_pipes;
> +     state->active_pipes = intel_calc_active_pipes(state, 
> dev_priv->active_pipes);
>  
> -     for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
> -                                         new_crtc_state, i) {
> -             if (new_crtc_state->hw.active)
> -                     state->active_pipes |= BIT(crtc->pipe);
> -             else
> -                     state->active_pipes &= ~BIT(crtc->pipe);
> -
> -             if (old_crtc_state->hw.active != new_crtc_state->hw.active)
> -                     state->active_pipe_changes |= BIT(crtc->pipe);
> -     }
> +     state->active_pipe_changes = state->active_pipes ^ 
> dev_priv->active_pipes;
>  
>       if (state->active_pipe_changes) {
>               ret = _intel_atomic_lock_global_state(state);
> diff --git a/drivers/gpu/drm/i915/display/intel_display.h 
> b/drivers/gpu/drm/i915/display/intel_display.h
> index 028aab728514..e2de0d9d22bf 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.h
> +++ b/drivers/gpu/drm/i915/display/intel_display.h
> @@ -44,6 +44,7 @@ struct drm_modeset_acquire_ctx;
>  struct drm_plane;
>  struct drm_plane_state;
>  struct i915_ggtt_view;
> +struct intel_atomic_state;
>  struct intel_crtc;
>  struct intel_crtc_state;
>  struct intel_digital_port;
> @@ -469,6 +470,8 @@ enum phy_fia {
>                            ((connector) = 
> to_intel_connector((__state)->base.connectors[__i].ptr), \
>                            (new_connector_state) = 
> to_intel_digital_connector_state((__state)->base.connectors[__i].new_state), 
> 1))
>  
> +u8 intel_calc_active_pipes(struct intel_atomic_state *state,
> +                        u8 active_pipes);
>  void intel_link_compute_m_n(u16 bpp, int nlanes,
>                           int pixel_clock, int link_clock,
>                           struct intel_link_m_n *m_n,
> -- 
> 2.24.1
> 
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