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 #include <drm/drm_encoder_slave.h>
35
36 #include "dispnv04/disp.h"
37
38 struct nv50_head_atom;
39 struct nouveau_connector;
40
41 #define NV_DPMS_CLEARED 0x80
42
43 struct nvkm_i2c_port;
44
45 struct nouveau_encoder {
46 struct drm_encoder_slave base;
47
48 struct dcb_output *dcb;
49 struct nvif_outp outp;
50 int or;
51
52 struct nouveau_connector *conn;
53
54 struct i2c_adapter *i2c;
55
56 /* different to drm_encoder.crtc, this reflects what's
57 * actually programmed on the hw, not the proposed crtc */
58 struct drm_crtc *crtc;
59 u32 ctrl;
60
61 /* Protected by nouveau_drm.audio.lock */
62 struct {
63 bool enabled;
64 } audio;
65
66 struct drm_display_mode mode;
67 int last_dpms;
68
69 struct nv04_output_reg restore;
70
71 struct {
72 struct {
73 bool enabled;
74 } hdmi;
75
76 struct {
77 struct nv50_mstm *mstm;
78
79 struct {
80 u8 caps[DP_LTTPR_COMMON_CAP_SIZE];
81 u8 nr;
82 } lttpr;
83
84 u8 dpcd[DP_RECEIVER_CAP_SIZE];
85
86 struct nvif_outp_dp_rate rate[8];
87 int rate_nr;
88
89 int link_nr;
90 int link_bw;
91
92 struct {
93 bool mst;
94 u8 nr;
95 u32 bw;
96 } lt;
97
98 /* Protects DP state that needs to be accessed outside
99 * connector reprobing contexts
100 */
101 struct mutex hpd_irq_lock;
102
103 u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
104 struct drm_dp_desc desc;
105
106 u8 sink_count;
107 } dp;
108 };
109
110 struct {
111 bool dp_interlace : 1;
112 } caps;
113
114 void (*enc_save)(struct drm_encoder *encoder);
115 void (*enc_restore)(struct drm_encoder *encoder);
116 void (*update)(struct nouveau_encoder *, u8 head,
117 struct nv50_head_atom *, u8 proto, u8 depth);
118 };
119
120 struct nv50_mstm {
121 struct nouveau_encoder *outp;
122
123 struct drm_dp_mst_topology_mgr mgr;
124
125 /* Protected under nouveau_encoder->dp.hpd_irq_lock */
126 bool can_mst;
127 bool is_mst;
128 bool suspended;
129
130 bool modified;
131 bool disabled;
132 int links;
133 };
134
135 struct nouveau_encoder *
136 find_encoder(struct drm_connector *connector, int type);
137
nouveau_encoder(struct drm_encoder * enc)138 static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
139 {
140 struct drm_encoder_slave *slave = to_encoder_slave(enc);
141
142 return container_of(slave, struct nouveau_encoder, base);
143 }
144
to_drm_encoder(struct nouveau_encoder * enc)145 static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
146 {
147 return &enc->base.base;
148 }
149
150 static inline const struct drm_encoder_slave_funcs *
get_slave_funcs(struct drm_encoder * enc)151 get_slave_funcs(struct drm_encoder *enc)
152 {
153 return to_encoder_slave(enc)->slave_funcs;
154 }
155
156 /* nouveau_dp.c */
157 enum nouveau_dp_status {
158 NOUVEAU_DP_NONE,
159 NOUVEAU_DP_SST,
160 NOUVEAU_DP_MST,
161 };
162
163 int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
164 bool nouveau_dp_train(struct nouveau_encoder *, bool mst, u32 khz, u8 bpc);
165 void nouveau_dp_power_down(struct nouveau_encoder *);
166 bool nouveau_dp_link_check(struct nouveau_connector *);
167 void nouveau_dp_irq(struct work_struct *);
168 enum drm_mode_status nv50_dp_mode_valid(struct nouveau_encoder *,
169 const struct drm_display_mode *,
170 unsigned *clock);
171
172 struct nouveau_connector *
173 nv50_outp_get_new_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
174 struct nouveau_connector *
175 nv50_outp_get_old_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
176
177 int nv50_mstm_detect(struct nouveau_encoder *encoder);
178 void nv50_mstm_remove(struct nv50_mstm *mstm);
179 bool nv50_mstm_service(struct nouveau_drm *drm,
180 struct nouveau_connector *nv_connector,
181 struct nv50_mstm *mstm);
182 #endif /* __NOUVEAU_ENCODER_H__ */
183