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
  36 #define NV_DPMS_CLEARED 0x80
  37
  38 struct nvkm_i2c_port;
  39
  40 struct nouveau_encoder {
  41         struct drm_encoder_slave base;
  42
  43         struct dcb_output *dcb;
  44         int or;
  45         int link;
  46
  47         struct i2c_adapter *i2c;
  48         struct nvkm_i2c_aux *aux;
  49
  50         /* different to drm_encoder.crtc, this reflects what's
  51          * actually programmed on the hw, not the proposed crtc */
  52         struct drm_crtc *crtc;
  53         u32 ctrl;
  54
  55         struct drm_display_mode mode;
  56         int last_dpms;
  57
  58         struct nv04_output_reg restore;
  59
  60         union {
  61                 struct {
  62                         struct nv50_mstm *mstm;
  63                         int link_nr;
  64                         int link_bw;
  65                 } dp;
  66         };
  67
  68         void (*enc_save)(struct drm_encoder *encoder);
  69         void (*enc_restore)(struct drm_encoder *encoder);
  70         void (*update)(struct nouveau_encoder *, u8 head,
  71                        struct drm_display_mode *, u8 proto, u8 depth);
  72 };
  73
  74 struct nouveau_encoder *
  75 find_encoder(struct drm_connector *connector, int type);
  76
  77 static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
  78 {
  79         struct drm_encoder_slave *slave = to_encoder_slave(enc);
  80
  81         return container_of(slave, struct nouveau_encoder, base);
  82 }
  83
  84 static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
  85 {
  86         return &enc->base.base;
  87 }
  88
  89 static inline const struct drm_encoder_slave_funcs *
  90 get_slave_funcs(struct drm_encoder *enc)
  91 {
  92         return to_encoder_slave(enc)->slave_funcs;
  93 }
  94
  95 /* nouveau_dp.c */
  96 enum nouveau_dp_status {
  97         NOUVEAU_DP_SST,
  98         NOUVEAU_DP_MST,
  99 };
 100
 101 int nouveau_dp_detect(struct nouveau_encoder *);
 102
 103 struct nouveau_connector *
 104 nouveau_encoder_connector_get(struct nouveau_encoder *encoder);
 105
 106 int nv50_mstm_detect(struct nv50_mstm *, u8 dpcd[8], int allow);
 107 void nv50_mstm_remove(struct nv50_mstm *);
 108 void nv50_mstm_service(struct nv50_mstm *);
 109 #endif /* __NOUVEAU_ENCODER_H__ */