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      1 /*	$NetBSD: nouveau_encoder.h,v 1.3 2021/12/18 23:45:32 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 2008 Maarten Maathuis.
      5  * All Rights Reserved.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining
      8  * a copy of this software and associated documentation files (the
      9  * "Software"), to deal in the Software without restriction, including
     10  * without limitation the rights to use, copy, modify, merge, publish,
     11  * distribute, sublicense, and/or sell copies of the Software, and to
     12  * permit persons to whom the Software is furnished to do so, subject to
     13  * the following conditions:
     14  *
     15  * The above copyright notice and this permission notice (including the
     16  * next paragraph) shall be included in all copies or substantial
     17  * portions of the Software.
     18  *
     19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     20  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
     22  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
     23  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     24  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     25  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     26  *
     27  */
     28 
     29 #ifndef __NOUVEAU_ENCODER_H__
     30 #define __NOUVEAU_ENCODER_H__
     31 
     32 #include <subdev/bios/dcb.h>
     33 
     34 #include <drm/drm_encoder_slave.h>
     35 #include <drm/drm_dp_mst_helper.h>
     36 #include "dispnv04/disp.h"
     37 struct nv50_head_atom;
     38 
     39 #define NV_DPMS_CLEARED 0x80
     40 
     41 struct nvkm_i2c_port;
     42 
     43 struct nouveau_encoder {
     44 	struct drm_encoder_slave base;
     45 
     46 	struct dcb_output *dcb;
     47 	int or;
     48 	int link;
     49 
     50 	struct i2c_adapter *i2c;
     51 	struct nvkm_i2c_aux *aux;
     52 
     53 	/* different to drm_encoder.crtc, this reflects what's
     54 	 * actually programmed on the hw, not the proposed crtc */
     55 	struct drm_crtc *crtc;
     56 	u32 ctrl;
     57 
     58 	struct drm_display_mode mode;
     59 	int last_dpms;
     60 
     61 	struct nv04_output_reg restore;
     62 
     63 	union {
     64 		struct {
     65 			struct nv50_mstm *mstm;
     66 			int link_nr;
     67 			int link_bw;
     68 		} dp;
     69 	};
     70 
     71 	void (*enc_save)(struct drm_encoder *encoder);
     72 	void (*enc_restore)(struct drm_encoder *encoder);
     73 	void (*update)(struct nouveau_encoder *, u8 head,
     74 		       struct nv50_head_atom *, u8 proto, u8 depth);
     75 };
     76 
     77 struct nouveau_encoder *
     78 find_encoder(struct drm_connector *connector, int type);
     79 
     80 static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
     81 {
     82 	struct drm_encoder_slave *slave = to_encoder_slave(enc);
     83 
     84 	return container_of(slave, struct nouveau_encoder, base);
     85 }
     86 
     87 static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
     88 {
     89 	return &enc->base.base;
     90 }
     91 
     92 static inline const struct drm_encoder_slave_funcs *
     93 get_slave_funcs(struct drm_encoder *enc)
     94 {
     95 	return to_encoder_slave(enc)->slave_funcs;
     96 }
     97 
     98 /* nouveau_dp.c */
     99 enum nouveau_dp_status {
    100 	NOUVEAU_DP_SST,
    101 	NOUVEAU_DP_MST,
    102 };
    103 
    104 int nouveau_dp_detect(struct nouveau_encoder *);
    105 
    106 struct nouveau_connector *
    107 nouveau_encoder_connector_get(struct nouveau_encoder *encoder);
    108 
    109 int nv50_mstm_detect(struct nv50_mstm *, u8 dpcd[8], int allow);
    110 void nv50_mstm_remove(struct nv50_mstm *);
    111 void nv50_mstm_service(struct nv50_mstm *);
    112 #endif /* __NOUVEAU_ENCODER_H__ */
    113