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 #include <nvif/outp.h>
30 #include <subdev/bios/dcb.h>
31
32 #include <drm/display/drm_dp_helper.h>
33 #include <drm/display/drm_dp_mst_helper.h>
34
35 #include <dispnv04/i2c/encoder_i2c.h>
36
37 #include "dispnv04/disp.h"
38
39 struct nv50_head_atom;
40 struct nouveau_connector;
41
42 #define NV_DPMS_CLEARED 0x80
43
44 struct nvkm_i2c_port;
45
46 struct nouveau_encoder {
47 struct nouveau_i2c_encoder base;
48
49 struct dcb_output *dcb;
50 struct nvif_outp outp;
51 int or;
52
53 struct nouveau_connector *conn;
54
55 struct i2c_adapter *i2c;
56
57 /* different to drm_encoder.crtc, this reflects what's
58 * actually programmed on the hw, not the proposed crtc */
59 struct drm_crtc *crtc;
60 u32 ctrl;
61
62 /* Protected by nouveau_drm.audio.lock */
63 struct {
64 bool enabled;
65 } audio;
66
67 struct drm_display_mode mode;
68 int last_dpms;
69
70 struct nv04_output_reg restore;
71
72 struct {
73 struct {
74 bool enabled;
75 } hdmi;
76
77 struct {
78 struct nv50_mstm *mstm;
79
80 struct {
81 u8 caps[DP_LTTPR_COMMON_CAP_SIZE];
82 u8 nr;
83 } lttpr;
84
85 u8 dpcd[DP_RECEIVER_CAP_SIZE];
86
87 struct nvif_outp_dp_rate rate[8];
88 int rate_nr;
89
90 int link_nr;
91 int link_bw;
92
93 struct {
94 bool mst;
95 u8 nr;
96 u32 bw;
97 } lt;
98
99 /* Protects DP state that needs to be accessed outside
100 * connector reprobing contexts
101 */
102 struct mutex hpd_irq_lock;
103
104 u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
105 struct drm_dp_desc desc;
106
107 u8 sink_count;
108 } dp;
109 };
110
111 struct {
112 bool dp_interlace : 1;
113 } caps;
114
115 void (*enc_save)(struct drm_encoder *encoder);
116 void (*enc_restore)(struct drm_encoder *encoder);
117 void (*update)(struct nouveau_encoder *, u8 head,
118 struct nv50_head_atom *, u8 proto, u8 depth);
119 };
120
121 struct nv50_mstm {
122 struct nouveau_encoder *outp;
123
124 struct drm_dp_mst_topology_mgr mgr;
125
126 /* Protected under nouveau_encoder->dp.hpd_irq_lock */
127 bool can_mst;
128 bool is_mst;
129 bool suspended;
130
131 bool modified;
132 bool disabled;
133 int links;
134 };
135
136 struct nouveau_encoder *
137 find_encoder(struct drm_connector *connector, int type);
138
nouveau_encoder(struct drm_encoder * enc)139 static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
140 {
141 struct nouveau_i2c_encoder *slave = to_encoder_i2c(enc);
142
143 return container_of(slave, struct nouveau_encoder, base);
144 }
145
to_drm_encoder(struct nouveau_encoder * enc)146 static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
147 {
148 return &enc->base.base;
149 }
150
151 /* nouveau_dp.c */
152 enum nouveau_dp_status {
153 NOUVEAU_DP_NONE,
154 NOUVEAU_DP_SST,
155 NOUVEAU_DP_MST,
156 };
157
158 int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
159 bool nouveau_dp_train(struct nouveau_encoder *, bool mst, u32 khz, u8 bpc);
160 void nouveau_dp_power_down(struct nouveau_encoder *);
161 bool nouveau_dp_link_check(struct nouveau_connector *);
162 void nouveau_dp_irq(struct work_struct *);
163 enum drm_mode_status nv50_dp_mode_valid(struct nouveau_encoder *,
164 const struct drm_display_mode *,
165 unsigned *clock);
166
167 struct nouveau_connector *
168 nv50_outp_get_new_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
169 struct nouveau_connector *
170 nv50_outp_get_old_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
171
172 int nv50_mstm_detect(struct nouveau_encoder *encoder);
173 void nv50_mstm_remove(struct nv50_mstm *mstm);
174 bool nv50_mstm_service(struct nouveau_drm *drm,
175 struct nouveau_connector *nv_connector,
176 struct nv50_mstm *mstm);
177 #endif /* __NOUVEAU_ENCODER_H__ */
178