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 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
100struct 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
115struct nouveau_encoder *
116find_encoder(struct drm_connector *connector, int type);
117
118static 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
125static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
126{
127	return &enc->base.base;
128}
129
130static inline const struct drm_encoder_slave_funcs *
131get_slave_funcs(struct drm_encoder *enc)
132{
133	return to_encoder_slave(enc)->slave_funcs;
134}
135
136/* nouveau_dp.c */
137enum nouveau_dp_status {
138	NOUVEAU_DP_NONE,
139	NOUVEAU_DP_SST,
140	NOUVEAU_DP_MST,
141};
142
143int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
144bool nouveau_dp_link_check(struct nouveau_connector *);
145void nouveau_dp_irq(struct work_struct *);
146enum drm_mode_status nv50_dp_mode_valid(struct nouveau_encoder *,
147					const struct drm_display_mode *,
148					unsigned *clock);
149
150struct nouveau_connector *
151nv50_outp_get_new_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
152struct nouveau_connector *
153nv50_outp_get_old_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
154
155int nv50_mstm_detect(struct nouveau_encoder *encoder);
156void nv50_mstm_remove(struct nv50_mstm *mstm);
157bool nv50_mstm_service(struct nouveau_drm *drm,
158		       struct nouveau_connector *nv_connector,
159		       struct nv50_mstm *mstm);
160#endif /* __NOUVEAU_ENCODER_H__ */
161