[RFC v4 06/25] drm/atomic: Move __drm_atomic_helper_disable_plane/set_config()

Daniel Vetter daniel at ffwll.ch
Mon Apr 16 08:30:08 UTC 2018


On Sat, Apr 14, 2018 at 01:52:59PM +0200, Noralf Trønnes wrote:
> Prepare for moving drm_fb_helper modesetting code to drm_client.
> drm_client will be linked to drm.ko, so move
> __drm_atomic_helper_disable_plane() and __drm_atomic_helper_set_config()
> out of drm_kms_helper.ko.
> 
> Signed-off-by: Noralf Trønnes <noralf at tronnes.org>
> ---
>  drivers/gpu/drm/drm_atomic.c        | 168 ++++++++++++++++++++++++++++++++++++
>  drivers/gpu/drm/drm_atomic_helper.c | 168 +-----------------------------------
>  drivers/gpu/drm/drm_fb_helper.c     |   8 +-
>  include/drm/drm_atomic.h            |   5 ++
>  include/drm/drm_atomic_helper.h     |   4 -
>  5 files changed, 179 insertions(+), 174 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index 7d25c42f22db..1fb602b6c8b1 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -2060,6 +2060,174 @@ void drm_atomic_clean_old_fb(struct drm_device *dev,
>  }
>  EXPORT_SYMBOL(drm_atomic_clean_old_fb);
>  
> +/* just used from drm_client and atomic-helper: */

In that case please put the prototype for these into the internal header
drm_crtc_internal.h. Just to avoid drivers abusing this (they really
shouldn't).
-Daniel

> +int drm_atomic_disable_plane(struct drm_plane *plane,
> +			     struct drm_plane_state *plane_state)
> +{
> +	int ret;
> +
> +	ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
> +	if (ret != 0)
> +		return ret;
> +
> +	drm_atomic_set_fb_for_plane(plane_state, NULL);
> +	plane_state->crtc_x = 0;
> +	plane_state->crtc_y = 0;
> +	plane_state->crtc_w = 0;
> +	plane_state->crtc_h = 0;
> +	plane_state->src_x = 0;
> +	plane_state->src_y = 0;
> +	plane_state->src_w = 0;
> +	plane_state->src_h = 0;
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL(drm_atomic_disable_plane);
> +
> +static int update_output_state(struct drm_atomic_state *state,
> +			       struct drm_mode_set *set)
> +{
> +	struct drm_device *dev = set->crtc->dev;
> +	struct drm_crtc *crtc;
> +	struct drm_crtc_state *new_crtc_state;
> +	struct drm_connector *connector;
> +	struct drm_connector_state *new_conn_state;
> +	int ret, i;
> +
> +	ret = drm_modeset_lock(&dev->mode_config.connection_mutex,
> +			       state->acquire_ctx);
> +	if (ret)
> +		return ret;
> +
> +	/* First disable all connectors on the target crtc. */
> +	ret = drm_atomic_add_affected_connectors(state, set->crtc);
> +	if (ret)
> +		return ret;
> +
> +	for_each_new_connector_in_state(state, connector, new_conn_state, i) {
> +		if (new_conn_state->crtc == set->crtc) {
> +			ret = drm_atomic_set_crtc_for_connector(new_conn_state,
> +								NULL);
> +			if (ret)
> +				return ret;
> +
> +			/* Make sure legacy setCrtc always re-trains */
> +			new_conn_state->link_status = DRM_LINK_STATUS_GOOD;
> +		}
> +	}
> +
> +	/* Then set all connectors from set->connectors on the target crtc */
> +	for (i = 0; i < set->num_connectors; i++) {
> +		new_conn_state = drm_atomic_get_connector_state(state,
> +							    set->connectors[i]);
> +		if (IS_ERR(new_conn_state))
> +			return PTR_ERR(new_conn_state);
> +
> +		ret = drm_atomic_set_crtc_for_connector(new_conn_state,
> +							set->crtc);
> +		if (ret)
> +			return ret;
> +	}
> +
> +	for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
> +		/*
> +		 * Don't update ->enable for the CRTC in the set_config request,
> +		 * since a mismatch would indicate a bug in the upper layers.
> +		 * The actual modeset code later on will catch any
> +		 * inconsistencies here.
> +		 */
> +		if (crtc == set->crtc)
> +			continue;
> +
> +		if (!new_crtc_state->connector_mask) {
> +			ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state,
> +								NULL);
> +			if (ret < 0)
> +				return ret;
> +
> +			new_crtc_state->active = false;
> +		}
> +	}
> +
> +	return 0;
> +}
> +
> +/* just used from drm_client and atomic-helper: */
> +int drm_atomic_set_config(struct drm_mode_set *set,
> +			  struct drm_atomic_state *state)
> +{
> +	struct drm_crtc_state *crtc_state;
> +	struct drm_plane_state *primary_state;
> +	struct drm_crtc *crtc = set->crtc;
> +	int hdisplay, vdisplay;
> +	int ret;
> +
> +	crtc_state = drm_atomic_get_crtc_state(state, crtc);
> +	if (IS_ERR(crtc_state))
> +		return PTR_ERR(crtc_state);
> +
> +	primary_state = drm_atomic_get_plane_state(state, crtc->primary);
> +	if (IS_ERR(primary_state))
> +		return PTR_ERR(primary_state);
> +
> +	if (!set->mode) {
> +		WARN_ON(set->fb);
> +		WARN_ON(set->num_connectors);
> +
> +		ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
> +		if (ret != 0)
> +			return ret;
> +
> +		crtc_state->active = false;
> +
> +		ret = drm_atomic_set_crtc_for_plane(primary_state, NULL);
> +		if (ret != 0)
> +			return ret;
> +
> +		drm_atomic_set_fb_for_plane(primary_state, NULL);
> +
> +		goto commit;
> +	}
> +
> +	WARN_ON(!set->fb);
> +	WARN_ON(!set->num_connectors);
> +
> +	ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode);
> +	if (ret != 0)
> +		return ret;
> +
> +	crtc_state->active = true;
> +
> +	ret = drm_atomic_set_crtc_for_plane(primary_state, crtc);
> +	if (ret != 0)
> +		return ret;
> +
> +	drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay);
> +
> +	drm_atomic_set_fb_for_plane(primary_state, set->fb);
> +	primary_state->crtc_x = 0;
> +	primary_state->crtc_y = 0;
> +	primary_state->crtc_w = hdisplay;
> +	primary_state->crtc_h = vdisplay;
> +	primary_state->src_x = set->x << 16;
> +	primary_state->src_y = set->y << 16;
> +	if (drm_rotation_90_or_270(primary_state->rotation)) {
> +		primary_state->src_w = vdisplay << 16;
> +		primary_state->src_h = hdisplay << 16;
> +	} else {
> +		primary_state->src_w = hdisplay << 16;
> +		primary_state->src_h = vdisplay << 16;
> +	}
> +
> +commit:
> +	ret = update_output_state(state, set);
> +	if (ret)
> +		return ret;
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_config);
> +
>  /**
>   * DOC: explicit fencing properties
>   *
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index ee03c1ed2521..4f20eb58dd4f 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -2673,7 +2673,7 @@ int drm_atomic_helper_disable_plane(struct drm_plane *plane,
>  	if (plane_state->crtc && plane_state->crtc->cursor == plane)
>  		plane_state->state->legacy_cursor_update = true;
>  
> -	ret = __drm_atomic_helper_disable_plane(plane, plane_state);
> +	ret = drm_atomic_disable_plane(plane, plane_state);
>  	if (ret != 0)
>  		goto fail;
>  
> @@ -2684,95 +2684,6 @@ int drm_atomic_helper_disable_plane(struct drm_plane *plane,
>  }
>  EXPORT_SYMBOL(drm_atomic_helper_disable_plane);
>  
> -/* just used from fb-helper and atomic-helper: */
> -int __drm_atomic_helper_disable_plane(struct drm_plane *plane,
> -		struct drm_plane_state *plane_state)
> -{
> -	int ret;
> -
> -	ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
> -	if (ret != 0)
> -		return ret;
> -
> -	drm_atomic_set_fb_for_plane(plane_state, NULL);
> -	plane_state->crtc_x = 0;
> -	plane_state->crtc_y = 0;
> -	plane_state->crtc_w = 0;
> -	plane_state->crtc_h = 0;
> -	plane_state->src_x = 0;
> -	plane_state->src_y = 0;
> -	plane_state->src_w = 0;
> -	plane_state->src_h = 0;
> -
> -	return 0;
> -}
> -
> -static int update_output_state(struct drm_atomic_state *state,
> -			       struct drm_mode_set *set)
> -{
> -	struct drm_device *dev = set->crtc->dev;
> -	struct drm_crtc *crtc;
> -	struct drm_crtc_state *new_crtc_state;
> -	struct drm_connector *connector;
> -	struct drm_connector_state *new_conn_state;
> -	int ret, i;
> -
> -	ret = drm_modeset_lock(&dev->mode_config.connection_mutex,
> -			       state->acquire_ctx);
> -	if (ret)
> -		return ret;
> -
> -	/* First disable all connectors on the target crtc. */
> -	ret = drm_atomic_add_affected_connectors(state, set->crtc);
> -	if (ret)
> -		return ret;
> -
> -	for_each_new_connector_in_state(state, connector, new_conn_state, i) {
> -		if (new_conn_state->crtc == set->crtc) {
> -			ret = drm_atomic_set_crtc_for_connector(new_conn_state,
> -								NULL);
> -			if (ret)
> -				return ret;
> -
> -			/* Make sure legacy setCrtc always re-trains */
> -			new_conn_state->link_status = DRM_LINK_STATUS_GOOD;
> -		}
> -	}
> -
> -	/* Then set all connectors from set->connectors on the target crtc */
> -	for (i = 0; i < set->num_connectors; i++) {
> -		new_conn_state = drm_atomic_get_connector_state(state,
> -							    set->connectors[i]);
> -		if (IS_ERR(new_conn_state))
> -			return PTR_ERR(new_conn_state);
> -
> -		ret = drm_atomic_set_crtc_for_connector(new_conn_state,
> -							set->crtc);
> -		if (ret)
> -			return ret;
> -	}
> -
> -	for_each_new_crtc_in_state(state, crtc, new_crtc_state, i) {
> -		/* Don't update ->enable for the CRTC in the set_config request,
> -		 * since a mismatch would indicate a bug in the upper layers.
> -		 * The actual modeset code later on will catch any
> -		 * inconsistencies here. */
> -		if (crtc == set->crtc)
> -			continue;
> -
> -		if (!new_crtc_state->connector_mask) {
> -			ret = drm_atomic_set_mode_prop_for_crtc(new_crtc_state,
> -								NULL);
> -			if (ret < 0)
> -				return ret;
> -
> -			new_crtc_state->active = false;
> -		}
> -	}
> -
> -	return 0;
> -}
> -
>  /**
>   * drm_atomic_helper_set_config - set a new config from userspace
>   * @set: mode set configuration
> @@ -2801,7 +2712,7 @@ int drm_atomic_helper_set_config(struct drm_mode_set *set,
>  		return -ENOMEM;
>  
>  	state->acquire_ctx = ctx;
> -	ret = __drm_atomic_helper_set_config(set, state);
> +	ret = drm_atomic_set_config(set, state);
>  	if (ret != 0)
>  		goto fail;
>  
> @@ -2817,81 +2728,6 @@ int drm_atomic_helper_set_config(struct drm_mode_set *set,
>  }
>  EXPORT_SYMBOL(drm_atomic_helper_set_config);
>  
> -/* just used from fb-helper and atomic-helper: */
> -int __drm_atomic_helper_set_config(struct drm_mode_set *set,
> -		struct drm_atomic_state *state)
> -{
> -	struct drm_crtc_state *crtc_state;
> -	struct drm_plane_state *primary_state;
> -	struct drm_crtc *crtc = set->crtc;
> -	int hdisplay, vdisplay;
> -	int ret;
> -
> -	crtc_state = drm_atomic_get_crtc_state(state, crtc);
> -	if (IS_ERR(crtc_state))
> -		return PTR_ERR(crtc_state);
> -
> -	primary_state = drm_atomic_get_plane_state(state, crtc->primary);
> -	if (IS_ERR(primary_state))
> -		return PTR_ERR(primary_state);
> -
> -	if (!set->mode) {
> -		WARN_ON(set->fb);
> -		WARN_ON(set->num_connectors);
> -
> -		ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
> -		if (ret != 0)
> -			return ret;
> -
> -		crtc_state->active = false;
> -
> -		ret = drm_atomic_set_crtc_for_plane(primary_state, NULL);
> -		if (ret != 0)
> -			return ret;
> -
> -		drm_atomic_set_fb_for_plane(primary_state, NULL);
> -
> -		goto commit;
> -	}
> -
> -	WARN_ON(!set->fb);
> -	WARN_ON(!set->num_connectors);
> -
> -	ret = drm_atomic_set_mode_for_crtc(crtc_state, set->mode);
> -	if (ret != 0)
> -		return ret;
> -
> -	crtc_state->active = true;
> -
> -	ret = drm_atomic_set_crtc_for_plane(primary_state, crtc);
> -	if (ret != 0)
> -		return ret;
> -
> -	drm_mode_get_hv_timing(set->mode, &hdisplay, &vdisplay);
> -
> -	drm_atomic_set_fb_for_plane(primary_state, set->fb);
> -	primary_state->crtc_x = 0;
> -	primary_state->crtc_y = 0;
> -	primary_state->crtc_w = hdisplay;
> -	primary_state->crtc_h = vdisplay;
> -	primary_state->src_x = set->x << 16;
> -	primary_state->src_y = set->y << 16;
> -	if (drm_rotation_90_or_270(primary_state->rotation)) {
> -		primary_state->src_w = vdisplay << 16;
> -		primary_state->src_h = hdisplay << 16;
> -	} else {
> -		primary_state->src_w = hdisplay << 16;
> -		primary_state->src_h = vdisplay << 16;
> -	}
> -
> -commit:
> -	ret = update_output_state(state, set);
> -	if (ret)
> -		return ret;
> -
> -	return 0;
> -}
> -
>  static int __drm_atomic_helper_disable_all(struct drm_device *dev,
>  					   struct drm_modeset_acquire_ctx *ctx,
>  					   bool clean_old_fbs)
> diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
> index d0936671a9a6..2eef24db21f8 100644
> --- a/drivers/gpu/drm/drm_fb_helper.c
> +++ b/drivers/gpu/drm/drm_fb_helper.c
> @@ -358,7 +358,7 @@ static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool activ
>  		if (plane->type == DRM_PLANE_TYPE_PRIMARY)
>  			continue;
>  
> -		ret = __drm_atomic_helper_disable_plane(plane, plane_state);
> +		ret = drm_atomic_disable_plane(plane, plane_state);
>  		if (ret != 0)
>  			goto out_state;
>  	}
> @@ -374,13 +374,13 @@ static int restore_fbdev_mode_atomic(struct drm_fb_helper *fb_helper, bool activ
>  			plane_state->rotation = rotation;
>  		}
>  
> -		ret = __drm_atomic_helper_set_config(mode_set, state);
> +		ret = drm_atomic_set_config(mode_set, state);
>  		if (ret != 0)
>  			goto out_state;
>  
>  		/*
> -		 * __drm_atomic_helper_set_config() sets active when a
> -		 * mode is set, unconditionally clear it if we force DPMS off
> +		 * drm_atomic_set_config() sets active when a mode is set,
> +		 * unconditionally clear it if we force DPMS off
>  		 */
>  		if (!active) {
>  			struct drm_crtc *crtc = mode_set->crtc;
> diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
> index a57a8aa90ffb..0b0827ff2169 100644
> --- a/include/drm/drm_atomic.h
> +++ b/include/drm/drm_atomic.h
> @@ -604,6 +604,11 @@ drm_atomic_add_affected_planes(struct drm_atomic_state *state,
>  void
>  drm_atomic_clean_old_fb(struct drm_device *dev, unsigned plane_mask, int ret);
>  
> +int drm_atomic_disable_plane(struct drm_plane *plane,
> +			     struct drm_plane_state *plane_state);
> +int drm_atomic_set_config(struct drm_mode_set *set,
> +			  struct drm_atomic_state *state);
> +
>  int __must_check drm_atomic_check_only(struct drm_atomic_state *state);
>  int __must_check drm_atomic_commit(struct drm_atomic_state *state);
>  int __must_check drm_atomic_nonblocking_commit(struct drm_atomic_state *state);
> diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
> index 26aaba58d6ce..8d88a8b2ad52 100644
> --- a/include/drm/drm_atomic_helper.h
> +++ b/include/drm/drm_atomic_helper.h
> @@ -114,12 +114,8 @@ int drm_atomic_helper_update_plane(struct drm_plane *plane,
>  				   struct drm_modeset_acquire_ctx *ctx);
>  int drm_atomic_helper_disable_plane(struct drm_plane *plane,
>  				    struct drm_modeset_acquire_ctx *ctx);
> -int __drm_atomic_helper_disable_plane(struct drm_plane *plane,
> -		struct drm_plane_state *plane_state);
>  int drm_atomic_helper_set_config(struct drm_mode_set *set,
>  				 struct drm_modeset_acquire_ctx *ctx);
> -int __drm_atomic_helper_set_config(struct drm_mode_set *set,
> -		struct drm_atomic_state *state);
>  
>  int drm_atomic_helper_disable_all(struct drm_device *dev,
>  				  struct drm_modeset_acquire_ctx *ctx);
> -- 
> 2.15.1
> 
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-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch


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