xref: /linux/drivers/gpu/drm/nouveau/nouveau_encoder.h (revision 03c11eb3b16dc0058589751dfd91f254be2be613)
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