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 "nv04_display.h"
34 
35 #define NV_DPMS_CLEARED 0x80
36 
37 struct nouveau_i2c_port;
38 
39 struct dp_train_func {
40 	void (*link_set)(struct drm_device *, struct dcb_output *, int crtc,
41 			 int nr, u32 bw, bool enhframe);
42 	void (*train_set)(struct drm_device *, struct dcb_output *, u8 pattern);
43 	void (*train_adj)(struct drm_device *, struct dcb_output *,
44 			  u8 lane, u8 swing, u8 preem);
45 };
46 
47 struct nouveau_encoder {
48 	struct drm_encoder_slave base;
49 
50 	struct dcb_output *dcb;
51 	int or;
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 
57 	struct drm_display_mode mode;
58 	int last_dpms;
59 
60 	struct nv04_output_reg restore;
61 
62 	union {
63 		struct {
64 			u8  dpcd[8];
65 			int link_nr;
66 			int link_bw;
67 			u32 datarate;
68 		} dp;
69 	};
70 };
71 
72 struct nouveau_encoder *
73 find_encoder(struct drm_connector *connector, int type);
74 
75 static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
76 {
77 	struct drm_encoder_slave *slave = to_encoder_slave(enc);
78 
79 	return container_of(slave, struct nouveau_encoder, base);
80 }
81 
82 static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
83 {
84 	return &enc->base.base;
85 }
86 
87 static inline struct drm_encoder_slave_funcs *
88 get_slave_funcs(struct drm_encoder *enc)
89 {
90 	return to_encoder_slave(enc)->slave_funcs;
91 }
92 
93 /* nouveau_dp.c */
94 bool nouveau_dp_detect(struct drm_encoder *);
95 void nouveau_dp_dpms(struct drm_encoder *, int mode, u32 datarate,
96 		     struct nouveau_object *);
97 
98 struct nouveau_connector *
99 nouveau_encoder_connector_get(struct nouveau_encoder *encoder);
100 
101 #endif /* __NOUVEAU_ENCODER_H__ */
102