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_helper.h>
  34#include <drm/drm_dp_mst_helper.h>
  35#include "dispnv04/disp.h"
  36struct nv50_head_atom;
  37struct nouveau_connector;
  38
  39#define NV_DPMS_CLEARED 0x80
  40
  41struct nvkm_i2c_port;
  42
  43struct nouveau_encoder {
  44        struct drm_encoder_slave base;
  45
  46        struct dcb_output *dcb;
  47        int or;
  48        int link;
  49
  50        struct i2c_adapter *i2c;
  51        struct nvkm_i2c_aux *aux;
  52
  53        /* different to drm_encoder.crtc, this reflects what's
  54         * actually programmed on the hw, not the proposed crtc */
  55        struct drm_crtc *crtc;
  56        u32 ctrl;
  57
  58        /* Protected by nouveau_drm.audio.lock */
  59        struct {
  60                bool enabled;
  61                struct drm_connector *connector;
  62        } audio;
  63
  64        struct drm_display_mode mode;
  65        int last_dpms;
  66
  67        struct nv04_output_reg restore;
  68
  69        union {
  70                struct {
  71                        struct nv50_mstm *mstm;
  72                        int link_nr;
  73                        int link_bw;
  74
  75                        /* Protects DP state that needs to be accessed outside
  76                         * connector reprobing contexts
  77                         */
  78                        struct mutex hpd_irq_lock;
  79
  80                        u8 dpcd[DP_RECEIVER_CAP_SIZE];
  81                        u8 downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
  82                        struct drm_dp_desc desc;
  83
  84                        u8 sink_count;
  85                } dp;
  86        };
  87
  88        struct {
  89                bool dp_interlace : 1;
  90        } caps;
  91
  92        void (*enc_save)(struct drm_encoder *encoder);
  93        void (*enc_restore)(struct drm_encoder *encoder);
  94        void (*update)(struct nouveau_encoder *, u8 head,
  95                       struct nv50_head_atom *, u8 proto, u8 depth);
  96};
  97
  98struct nv50_mstm {
  99        struct nouveau_encoder *outp;
 100
 101        struct drm_dp_mst_topology_mgr mgr;
 102
 103        /* Protected under nouveau_encoder->dp.hpd_irq_lock */
 104        bool can_mst;
 105        bool is_mst;
 106        bool suspended;
 107
 108        bool modified;
 109        bool disabled;
 110        int links;
 111};
 112
 113struct nouveau_encoder *
 114find_encoder(struct drm_connector *connector, int type);
 115
 116static inline struct nouveau_encoder *nouveau_encoder(struct drm_encoder *enc)
 117{
 118        struct drm_encoder_slave *slave = to_encoder_slave(enc);
 119
 120        return container_of(slave, struct nouveau_encoder, base);
 121}
 122
 123static inline struct drm_encoder *to_drm_encoder(struct nouveau_encoder *enc)
 124{
 125        return &enc->base.base;
 126}
 127
 128static inline const struct drm_encoder_slave_funcs *
 129get_slave_funcs(struct drm_encoder *enc)
 130{
 131        return to_encoder_slave(enc)->slave_funcs;
 132}
 133
 134/* nouveau_dp.c */
 135enum nouveau_dp_status {
 136        NOUVEAU_DP_NONE,
 137        NOUVEAU_DP_SST,
 138        NOUVEAU_DP_MST,
 139};
 140
 141int nouveau_dp_detect(struct nouveau_connector *, struct nouveau_encoder *);
 142void nouveau_dp_irq(struct nouveau_drm *drm,
 143                    struct nouveau_connector *nv_connector);
 144enum drm_mode_status nv50_dp_mode_valid(struct drm_connector *,
 145                                        struct nouveau_encoder *,
 146                                        const struct drm_display_mode *,
 147                                        unsigned *clock);
 148
 149struct nouveau_connector *
 150nv50_outp_get_new_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
 151struct nouveau_connector *
 152nv50_outp_get_old_connector(struct drm_atomic_state *state, struct nouveau_encoder *outp);
 153
 154int nv50_mstm_detect(struct nouveau_encoder *encoder);
 155void nv50_mstm_remove(struct nv50_mstm *mstm);
 156bool nv50_mstm_service(struct nouveau_drm *drm,
 157                       struct nouveau_connector *nv_connector,
 158                       struct nv50_mstm *mstm);
 159#endif /* __NOUVEAU_ENCODER_H__ */
 160