text: /*
   * Copyright (C) 2008 Maarten Maathuis.
   * All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice (including the
   * next paragraph) shall be included in all copies or substantial
   * portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
   * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   *
   */
  
  #ifndef __NOUVEAU_ENCODER_H__
  #define __NOUVEAU_ENCODER_H__
  
  #include <subdev/bios/dcb.h>
  
  #include <drm/drm_encoder_slave.h>
  #include <drm/drm_dp_mst_helper.h>
  #include "dispnv04/disp.h"
  struct nv50_head_atom;
  
  #define NV_DPMS_CLEARED 0x80
  
  struct nvkm_i2c_port;
  
  struct nouveau_encoder {
  	struct drm_encoder_slave base;
  
  	struct dcb_output *dcb;
  	int or;
  	int link;
  
  	struct i2c_adapter *i2c;
  	struct nvkm_i2c_aux *aux;
  
  	/* different to drm_encoder.crtc, this reflects what's
  	 * actually programmed on the hw, not the proposed crtc */
  	struct drm_crtc *crtc;
  	u32 ctrl;
  
  	struct drm_display_mode mode;
  	int last_dpms;
  
  	struct nv04_output_reg restore;
  
  	union {
  		struct {
  			struct nv50_mstm *mstm;
  			int link_nr;
  			int link_bw;
  		} dp;
  	};
  
  	void (*enc_save)(struct drm_encoder *encoder);
  	void (*enc_restore)(struct drm_encoder *encoder);
  	void (*update)(struct nouveau_encoder *, u8 head,
  		       struct nv50_head_atom *, u8 proto, u8 depth);
  };
  
  struct nouveau_encoder *
  find_encoder(struct drm_connector *connector, int type);
  
  static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
  {
  	struct drm_encoder_slave *slave = to_encoder_slave(enc);
  
  	return container_of(slave, struct nouveau_encoder, base);
  }
  
  static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
  {
  	return &enc->base.base;
  }
  
  static inline const struct drm_encoder_slave_funcs *
  get_slave_funcs(struct drm_encoder *enc)
  {
  	return to_encoder_slave(enc)->slave_funcs;
  }
  
  /* nouveau_dp.c */
  enum nouveau_dp_status {
  	NOUVEAU_DP_SST,
  	NOUVEAU_DP_MST,
  };
  
  int nouveau_dp_detect(struct nouveau_encoder *);
  
  struct nouveau_connector *
  nouveau_encoder_connector_get(struct nouveau_encoder *encoder);
  
  int nv50_mstm_detect(struct nv50_mstm *, u8 dpcd[8], int allow);
  void nv50_mstm_remove(struct nv50_mstm *);
  void nv50_mstm_service(struct nv50_mstm *);
  #endif /* __NOUVEAU_ENCODER_H__ */
  