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
38struct nv50_head_atom;
39struct nouveau_connector;
40
41#define NV_DPMS_CLEARED 0x80
42
43struct nvkm_i2c_port;
44
45struct 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
120struct 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
135struct nouveau_encoder *
136find_encoder(struct drm_connector *connector, int type);
137
138static 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
145static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
146{
147	return &enc->base.base;
148}
149
150static inline const struct drm_encoder_slave_funcs *
151get_slave_funcs(struct drm_encoder *enc)
152{
153	return to_encoder_slave(enc)->slave_funcs;
154}
155
156/* nouveau_dp.c */
157enum nouveau_dp_status {
158	NOUVEAU_DP_NONE,
159	NOUVEAU_DP_SST,
160	NOUVEAU_DP_MST,
161};
162
163int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
164bool nouveau_dp_train(struct nouveau_encoder *, bool mst, u32 khz, u8 bpc);
165void nouveau_dp_power_down(struct nouveau_encoder *);
166bool nouveau_dp_link_check(struct nouveau_connector *);
167void nouveau_dp_irq(struct work_struct *);
168enum drm_mode_status nv50_dp_mode_valid(struct nouveau_encoder *,
169					const struct drm_display_mode *,
170					unsigned *clock);
171
172struct nouveau_connector *
173nv50_outp_get_new_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
174struct nouveau_connector *
175nv50_outp_get_old_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
176
177int nv50_mstm_detect(struct nouveau_encoder *encoder);
178void nv50_mstm_remove(struct nv50_mstm *mstm);
179bool nv50_mstm_service(struct nouveau_drm *drm,
180		       struct nouveau_connector *nv_connector,
181		       struct nv50_mstm *mstm);
182#endif /* __NOUVEAU_ENCODER_H__ */
183