drivers/gpu/drm/nouveau/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
  30 #include <subdev/bios/dcb.h>
  31
  32 #include <drm/drm_encoder_slave.h>
  33 #include <drm/drm_dp_mst_helper.h>
  34 #include "dispnv04/disp.h"
  35 struct nv50_head_atom;
  36 struct nouveau_connector;
  37
  38 #define NV_DPMS_CLEARED 0x80
  39
  40 struct nvkm_i2c_port;
  41
  42 struct nouveau_encoder {
  43         struct drm_encoder_slave base;
  44
  45         struct dcb_output *dcb;
  46         int or;
  47         int link;
  48
  49         struct i2c_adapter *i2c;
  50         struct nvkm_i2c_aux *aux;
  51
  52         /* different to drm_encoder.crtc, this reflects what's
  53          * actually programmed on the hw, not the proposed crtc */
  54         struct drm_crtc *crtc;
  55         u32 ctrl;
  56         bool audio;
  57
  58         struct drm_display_mode mode;
  59         int last_dpms;
  60
  61         struct nv04_output_reg restore;
  62
  63         union {
  64                 struct {
  65                         struct nv50_mstm *mstm;
  66                         int link_nr;
  67                         int link_bw;
  68
  69                         /* Protects DP state that needs to be accessed outside
  70                          * connector reprobing contexts
  71                          */
  72                         struct mutex hpd_irq_lock;
  73
  74                         u8 dpcd[DP_RECEIVER_CAP_SIZE];
  75                         u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
  76                         struct drm_dp_desc desc;
  77
  78                         u8 sink_count;
  79                 } dp;
  80         };
  81
  82         struct {
  83                 bool dp_interlace : 1;
  84         } caps;
  85
  86         void (*enc_save)(struct drm_encoder *encoder);
  87         void (*enc_restore)(struct drm_encoder *encoder);
  88         void (*update)(struct nouveau_encoder *, u8 head,
  89                        struct nv50_head_atom *, u8 proto, u8 depth);
  90 };
  91
  92 struct nv50_mstm {
  93         struct nouveau_encoder *outp;
  94
  95         struct drm_dp_mst_topology_mgr mgr;
  96
  97         /* Protected under nouveau_encoder->dp.hpd_irq_lock */
  98         bool can_mst;
  99         bool is_mst;
 100         bool suspended;
 101
 102         bool modified;
 103         bool disabled;
 104         int links;
 105 };
 106
 107 struct nouveau_encoder *
 108 find_encoder(struct drm_connector *connector, int type);
 109
 110 static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
 111 {
 112         struct drm_encoder_slave *slave = to_encoder_slave(enc);
 113
 114         return container_of(slave, struct nouveau_encoder, base);
 115 }
 116
 117 static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
 118 {
 119         return &enc->base.base;
 120 }
 121
 122 static inline const struct drm_encoder_slave_funcs *
 123 get_slave_funcs(struct drm_encoder *enc)
 124 {
 125         return to_encoder_slave(enc)->slave_funcs;
 126 }
 127
 128 /* nouveau_dp.c */
 129 enum nouveau_dp_status {
 130         NOUVEAU_DP_NONE,
 131         NOUVEAU_DP_SST,
 132         NOUVEAU_DP_MST,
 133 };
 134
 135 int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
 136 void nouveau_dp_irq(struct nouveau_drm *drm,
 137                     struct nouveau_connector *nv_connector);
 138 enum drm_mode_status nv50_dp_mode_valid(struct drm_connector *,
 139                                         struct nouveau_encoder *,
 140                                         const struct drm_display_mode *,
 141                                         unsigned *clock);
 142
 143 struct nouveau_connector *
 144 nv50_outp_get_new_connector(struct nouveau_encoder *outp,
 145                             struct drm_atomic_state *state);
 146 struct nouveau_connector *
 147 nv50_outp_get_old_connector(struct nouveau_encoder *outp,
 148                             struct drm_atomic_state *state);
 149
 150 int nv50_mstm_detect(struct nouveau_encoder *encoder);
 151 void nv50_mstm_remove(struct nv50_mstm *mstm);
 152 bool nv50_mstm_service(struct nouveau_drm *drm,
 153                        struct nouveau_connector *nv_connector,
 154                        struct nv50_mstm *mstm);
 155 #endif /* __NOUVEAU_ENCODER_H__ */