Re: [Intel-gfx] [CI v3 1/3] drm/i915: Introduce encoder->compute_config_late()

["Shankar, Uma" <uma.shankar@intel.com>]

> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org> On Behalf Of Manasi
> Navare
> Sent: Friday, February 14, 2020 5:11 PM
> To: intel-gfx@lists.freedesktop.org
> Subject: [Intel-gfx] [CI v3 1/3] drm/i915: Introduce encoder->compute_config_late()
> 
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> Add an optional secondary encoder state compute hook. This gets called after the
> normak .compute_config() has been called for all the encoders in the state. Thus in
> the new hook we can rely on all derived state populated by .compute_config() to be
> already set up. Should be useful for MST and port sync master/slave transcoder
> selection.

Pushed the series to dinq. Thanks for the patches and review.

> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c  | 39 +++++++++++++++++++
>  .../drm/i915/display/intel_display_types.h    |  3 ++
>  2 files changed, 42 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index e09d3c93c52b..ce72551ba16a 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -13549,6 +13549,35 @@ intel_modeset_pipe_config(struct intel_crtc_state
> *pipe_config)
>  	return 0;
>  }
> 
> +static int
> +intel_modeset_pipe_config_late(struct intel_crtc_state *crtc_state) {
> +	struct intel_atomic_state *state =
> +		to_intel_atomic_state(crtc_state->uapi.state);
> +	struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> +	struct drm_connector_state *conn_state;
> +	struct drm_connector *connector;
> +	int i;
> +
> +	for_each_new_connector_in_state(&state->base, connector,
> +					conn_state, i) {
> +		struct intel_encoder *encoder =
> +			to_intel_encoder(conn_state->best_encoder);
> +		int ret;
> +
> +		if (conn_state->crtc != &crtc->base ||
> +		    !encoder->compute_config_late)
> +			continue;
> +
> +		ret = encoder->compute_config_late(encoder, crtc_state,
> +						   conn_state);
> +		if (ret)
> +			return ret;
> +	}
> +
> +	return 0;
> +}
> +
>  bool intel_fuzzy_clock_check(int clock1, int clock2)  {
>  	int diff;
> @@ -14954,6 +14983,16 @@ static int intel_atomic_check(struct drm_device *dev,
>  		ret = intel_modeset_pipe_config(new_crtc_state);
>  		if (ret)
>  			goto fail;
> +	}
> +
> +	for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
> +					    new_crtc_state, i) {
> +		if (!needs_modeset(new_crtc_state))
> +			continue;
> +
> +		ret = intel_modeset_pipe_config_late(new_crtc_state);
> +		if (ret)
> +			goto fail;
> 
>  		intel_crtc_check_fastset(old_crtc_state, new_crtc_state);
>  	}
> diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h
> b/drivers/gpu/drm/i915/display/intel_display_types.h
> index 283c622f8ba1..0d8a64305464 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_types.h
> +++ b/drivers/gpu/drm/i915/display/intel_display_types.h
> @@ -141,6 +141,9 @@ struct intel_encoder {
>  	int (*compute_config)(struct intel_encoder *,
>  			      struct intel_crtc_state *,
>  			      struct drm_connector_state *);
> +	int (*compute_config_late)(struct intel_encoder *,
> +				   struct intel_crtc_state *,
> +				   struct drm_connector_state *);
>  	void (*update_prepare)(struct intel_atomic_state *,
>  			       struct intel_encoder *,
>  			       struct intel_crtc *);
> --
> 2.19.1
> 
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