LXR linux/drivers/gpu/drm/nouveau/nouveau

   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"
  35struct nv50_head_atom;
  36
  37#define NV_DPMS_CLEARED 0x80
  38
  39struct nvkm_i2c_port;
  40
  41struct nouveau_encoder {
  42        struct drm_encoder_slave base;
  43
  44        struct dcb_output *dcb;
  45        int or;
  46        int link;
  47
  48        struct i2c_adapter *i2c;
  49        struct nvkm_i2c_aux *aux;
  50
  51        /* different to drm_encoder.crtc, this reflects what's
  52         * actually programmed on the hw, not the proposed crtc */
  53        struct drm_crtc *crtc;
  54        u32 ctrl;
  55
  56        struct drm_display_mode mode;
  57        int last_dpms;
  58
  59        struct nv04_output_reg restore;
  60
  61        union {
  62                struct {
  63                        struct nv50_mstm *mstm;
  64                        int link_nr;
  65                        int link_bw;
  66                } dp;
  67        };
  68
  69        void (*enc_save)(struct drm_encoder *encoder);
  70        void (*enc_restore)(struct drm_encoder *encoder);
  71        void (*update)(struct nouveau_encoder *, u8 head,
  72                       struct nv50_head_atom *, u8 proto, u8 depth);
  73};
  74
  75struct nouveau_encoder *
  76find_encoder(struct drm_connector *connector, int type);
  77
  78static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
  79{
  80        struct drm_encoder_slave *slave = to_encoder_slave(enc);
  81
  82        return container_of(slave, struct nouveau_encoder, base);
  83}
  84
  85static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
  86{
  87        return &enc->base.base;
  88}
  89
  90static inline const struct drm_encoder_slave_funcs *
  91get_slave_funcs(struct drm_encoder *enc)
  92{
  93        return to_encoder_slave(enc)->slave_funcs;
  94}
  95
  96/* nouveau_dp.c */
  97enum nouveau_dp_status {
  98        NOUVEAU_DP_SST,
  99        NOUVEAU_DP_MST,
 100};
 101
 102int nouveau_dp_detect(struct nouveau_encoder *);
 103
 104struct nouveau_connector *
 105nouveau_encoder_connector_get(struct nouveau_encoder *encoder);
 106
 107int nv50_mstm_detect(struct nv50_mstm *, u8 dpcd[8], int allow);
 108void nv50_mstm_remove(struct nv50_mstm *);
 109void nv50_mstm_service(struct nv50_mstm *);
 110#endif /* __NOUVEAU_ENCODER_H__ */
 111