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;
  36struct nouveau_connector;
  37
  38#define NV_DPMS_CLEARED 0x80
  39
  40struct nvkm_i2c_port;
  41
  42struct 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
  92struct 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
 107struct nouveau_encoder *
 108find_encoder(struct drm_connector *connector, int type);
 109
 110static 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
 117static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
 118{
 119        return &enc->base.base;
 120}
 121
 122static inline const struct drm_encoder_slave_funcs *
 123get_slave_funcs(struct drm_encoder *enc)
 124{
 125        return to_encoder_slave(enc)->slave_funcs;
 126}
 127
 128/* nouveau_dp.c */
 129enum nouveau_dp_status {
 130        NOUVEAU_DP_NONE,
 131        NOUVEAU_DP_SST,
 132        NOUVEAU_DP_MST,
 133};
 134
 135int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
 136void nouveau_dp_irq(struct nouveau_drm *drm,
 137                    struct nouveau_connector *nv_connector);
 138enum drm_mode_status nv50_dp_mode_valid(struct drm_connector *,
 139                                        struct nouveau_encoder *,
 140                                        const struct drm_display_mode *,
 141                                        unsigned *clock);
 142
 143struct nouveau_connector *
 144nv50_outp_get_new_connector(struct nouveau_encoder *outp,
 145                            struct drm_atomic_state *state);
 146struct nouveau_connector *
 147nv50_outp_get_old_connector(struct nouveau_encoder *outp,
 148                            struct drm_atomic_state *state);
 149
 150int nv50_mstm_detect(struct nouveau_encoder *encoder);
 151void nv50_mstm_remove(struct nv50_mstm *mstm);
 152bool nv50_mstm_service(struct nouveau_drm *drm,
 153                       struct nouveau_connector *nv_connector,
 154                       struct nv50_mstm *mstm);
 155#endif /* __NOUVEAU_ENCODER_H__ */
 156