nouveau_encoder.h

  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
 35#include <dispnv04/i2c/encoder_i2c.h>
 36
 37#include "dispnv04/disp.h"
 38
 39struct nv50_head_atom;
 40struct nouveau_connector;
 41
 42#define NV_DPMS_CLEARED 0x80
 43
 44struct nvkm_i2c_port;
 45
 46struct nouveau_encoder {
 47	struct nouveau_i2c_encoder base;
 48
 49	struct dcb_output *dcb;
 50	struct nvif_outp outp;
 51	int or;
 52
 53	struct nouveau_connector *conn;
 54
 55	struct i2c_adapter *i2c;
 56
 57	/* different to drm_encoder.crtc, this reflects what's
 58	 * actually programmed on the hw, not the proposed crtc */
 59	struct drm_crtc *crtc;
 60	u32 ctrl;
 61
 62	/* Protected by nouveau_drm.audio.lock */
 63	struct {
 64		bool enabled;
 65	} audio;
 66
 67	struct drm_display_mode mode;
 68	int last_dpms;
 69
 70	struct nv04_output_reg restore;
 71
 72	struct {
 73		struct {
 74			bool enabled;
 75		} hdmi;
 76
 77		struct {
 78			struct nv50_mstm *mstm;
 79
 80			struct {
 81				u8 caps[DP_LTTPR_COMMON_CAP_SIZE];
 82				u8 nr;
 83			} lttpr;
 84
 85			u8 dpcd[DP_RECEIVER_CAP_SIZE];
 86
 87			struct nvif_outp_dp_rate rate[8];
 88			int rate_nr;
 89
 90			int link_nr;
 91			int link_bw;
 92
 93			struct {
 94				bool mst;
 95				u8   nr;
 96				u32  bw;
 97			} lt;
 98
 99			/* Protects DP state that needs to be accessed outside
100			 * connector reprobing contexts
101			 */
102			struct mutex hpd_irq_lock;
103
104			u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
105			struct drm_dp_desc desc;
106
107			u8 sink_count;
108		} dp;
109	};
110
111	struct {
112		bool dp_interlace : 1;
113	} caps;
114
115	void (*enc_save)(struct drm_encoder *encoder);
116	void (*enc_restore)(struct drm_encoder *encoder);
117	void (*update)(struct nouveau_encoder *, u8 head,
118		       struct nv50_head_atom *, u8 proto, u8 depth);
119};
120
121struct nv50_mstm {
122	struct nouveau_encoder *outp;
123
124	struct drm_dp_mst_topology_mgr mgr;
125
126	/* Protected under nouveau_encoder->dp.hpd_irq_lock */
127	bool can_mst;
128	bool is_mst;
129	bool suspended;
130
131	bool modified;
132	bool disabled;
133	int links;
134};
135
136struct nouveau_encoder *
137find_encoder(struct drm_connector *connector, int type);
138
139static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
140{
141	struct nouveau_i2c_encoder *slave = to_encoder_i2c(enc);
142
143	return container_of(slave, struct nouveau_encoder, base);
144}
145
146static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
147{
148	return &enc->base.base;
149}
150
151/* nouveau_dp.c */
152enum nouveau_dp_status {
153	NOUVEAU_DP_NONE,
154	NOUVEAU_DP_SST,
155	NOUVEAU_DP_MST,
156};
157
158int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
159bool nouveau_dp_train(struct nouveau_encoder *, bool mst, u32 khz, u8 bpc);
160void nouveau_dp_power_down(struct nouveau_encoder *);
161bool nouveau_dp_link_check(struct nouveau_connector *);
162void nouveau_dp_irq(struct work_struct *);
163enum drm_mode_status nv50_dp_mode_valid(struct nouveau_encoder *,
164					const struct drm_display_mode *,
165					unsigned *clock);
166
167struct nouveau_connector *
168nv50_outp_get_new_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
169struct nouveau_connector *
170nv50_outp_get_old_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
171
172int nv50_mstm_detect(struct nouveau_encoder *encoder);
173void nv50_mstm_remove(struct nv50_mstm *mstm);
174bool nv50_mstm_service(struct nouveau_drm *drm,
175		       struct nouveau_connector *nv_connector,
176		       struct nv50_mstm *mstm);
177#endif /* __NOUVEAU_ENCODER_H__ */