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 i2c_adapter *i2c;
53 struct nvkm_i2c_aux *aux;
54
55 /* different to drm_encoder.crtc, this reflects what's
56 * actually programmed on the hw, not the proposed crtc */
57 struct drm_crtc *crtc;
58 u32 ctrl;
59
60 /* Protected by nouveau_drm.audio.lock */
61 struct {
62 bool enabled;
63 struct drm_connector *connector;
64 } audio;
65
66 struct drm_display_mode mode;
67 int last_dpms;
68
69 struct nv04_output_reg restore;
70
71 union {
72 struct {
73 struct nv50_mstm *mstm;
74 int link_nr;
75 int link_bw;
76
77 /* Protects DP state that needs to be accessed outside
78 * connector reprobing contexts
79 */
80 struct mutex hpd_irq_lock;
81
82 u8 dpcd[DP_RECEIVER_CAP_SIZE];
83 u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
84 struct drm_dp_desc desc;
85
86 u8 sink_count;
87 } dp;
88 };
89
90 struct {
91 bool dp_interlace : 1;
92 } caps;
93
94 void (*enc_save)(struct drm_encoder *encoder);
95 void (*enc_restore)(struct drm_encoder *encoder);
96 void (*update)(struct nouveau_encoder *, u8 head,
97 struct nv50_head_atom *, u8 proto, u8 depth);
98 };
99
100 struct nv50_mstm {
101 struct nouveau_encoder *outp;
102
103 struct drm_dp_mst_topology_mgr mgr;
104
105 /* Protected under nouveau_encoder->dp.hpd_irq_lock */
106 bool can_mst;
107 bool is_mst;
108 bool suspended;
109
110 bool modified;
111 bool disabled;
112 int links;
113 };
114
115 struct nouveau_encoder *
116 find_encoder(struct drm_connector *connector, int type);
117
nouveau_encoder(struct drm_encoder * enc)118 static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
119 {
120 struct drm_encoder_slave *slave = to_encoder_slave(enc);
121
122 return container_of(slave, struct nouveau_encoder, base);
123 }
124
to_drm_encoder(struct nouveau_encoder * enc)125 static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
126 {
127 return &enc->base.base;
128 }
129
130 static inline const struct drm_encoder_slave_funcs *
get_slave_funcs(struct drm_encoder * enc)131 get_slave_funcs(struct drm_encoder *enc)
132 {
133 return to_encoder_slave(enc)->slave_funcs;
134 }
135
136 /* nouveau_dp.c */
137 enum nouveau_dp_status {
138 NOUVEAU_DP_NONE,
139 NOUVEAU_DP_SST,
140 NOUVEAU_DP_MST,
141 };
142
143 int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
144 bool nouveau_dp_link_check(struct nouveau_connector *);
145 void nouveau_dp_irq(struct work_struct *);
146 enum drm_mode_status nv50_dp_mode_valid(struct nouveau_encoder *,
147 const struct drm_display_mode *,
148 unsigned *clock);
149
150 struct nouveau_connector *
151 nv50_outp_get_new_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
152 struct nouveau_connector *
153 nv50_outp_get_old_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
154
155 int nv50_mstm_detect(struct nouveau_encoder *encoder);
156 void nv50_mstm_remove(struct nv50_mstm *mstm);
157 bool nv50_mstm_service(struct nouveau_drm *drm,
158 struct nouveau_connector *nv_connector,
159 struct nv50_mstm *mstm);
160 #endif /* __NOUVEAU_ENCODER_H__ */
161