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