sound/firewire/bebob/bebob.h

   1 /*
   2  * bebob.h - a part of driver for BeBoB based devices
   3  *
   4  * Copyright (c) 2013-2014 Takashi Sakamoto
   5  *
   6  * Licensed under the terms of the GNU General Public License, version 2.
   7  */
   8
   9 #ifndef SOUND_BEBOB_H_INCLUDED
  10 #define SOUND_BEBOB_H_INCLUDED
  11
  12 #include <linux/compat.h>
  13 #include <linux/device.h>
  14 #include <linux/firewire.h>
  15 #include <linux/firewire-constants.h>
  16 #include <linux/module.h>
  17 #include <linux/mod_devicetable.h>
  18 #include <linux/delay.h>
  19 #include <linux/slab.h>
  20
  21 #include <sound/core.h>
  22 #include <sound/initval.h>
  23 #include <sound/info.h>
  24
  25 #include "../lib.h"
  26 #include "../fcp.h"
  27 #include "../packets-buffer.h"
  28 #include "../iso-resources.h"
  29 #include "../amdtp.h"
  30 #include "../cmp.h"
  31
  32 /* basic register addresses on DM1000/DM1100/DM1500 */
  33 #define BEBOB_ADDR_REG_INFO     0xffffc8020000
  34 #define BEBOB_ADDR_REG_REQ      0xffffc8021000
  35
  36 struct snd_bebob;
  37
  38 #define SND_BEBOB_STRM_FMT_ENTRIES      7
  39 struct snd_bebob_stream_formation {
  40         unsigned int pcm;
  41         unsigned int midi;
  42 };
  43 /* this is a lookup table for index of stream formations */
  44 extern const unsigned int snd_bebob_rate_table[SND_BEBOB_STRM_FMT_ENTRIES];
  45
  46 struct snd_bebob {
  47         struct snd_card *card;
  48         struct fw_unit *unit;
  49         int card_index;
  50
  51         struct mutex mutex;
  52         spinlock_t lock;
  53
  54         unsigned int midi_input_ports;
  55         unsigned int midi_output_ports;
  56
  57         /* for bus reset quirk */
  58         struct completion bus_reset;
  59         bool connected;
  60
  61         struct amdtp_stream *master;
  62         struct amdtp_stream tx_stream;
  63         struct amdtp_stream rx_stream;
  64         struct cmp_connection out_conn;
  65         struct cmp_connection in_conn;
  66         atomic_t capture_substreams;
  67         atomic_t playback_substreams;
  68
  69         struct snd_bebob_stream_formation
  70                 tx_stream_formations[SND_BEBOB_STRM_FMT_ENTRIES];
  71         struct snd_bebob_stream_formation
  72                 rx_stream_formations[SND_BEBOB_STRM_FMT_ENTRIES];
  73
  74         int sync_input_plug;
  75 };
  76
  77 static inline int
  78 snd_bebob_read_block(struct fw_unit *unit, u64 addr, void *buf, int size)
  79 {
  80         return snd_fw_transaction(unit, TCODE_READ_BLOCK_REQUEST,
  81                                   BEBOB_ADDR_REG_INFO + addr,
  82                                   buf, size, 0);
  83 }
  84
  85 static inline int
  86 snd_bebob_read_quad(struct fw_unit *unit, u64 addr, u32 *buf)
  87 {
  88         return snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST,
  89                                   BEBOB_ADDR_REG_INFO + addr,
  90                                   (void *)buf, sizeof(u32), 0);
  91 }
  92
  93 /*
  94  * AVC command extensions, AV/C Unit and Subunit, Revision 17
  95  * (Nov 2003, BridgeCo)
  96  */
  97 #define AVC_BRIDGECO_ADDR_BYTES 6
  98 enum avc_bridgeco_plug_dir {
  99         AVC_BRIDGECO_PLUG_DIR_IN        = 0x00,
 100         AVC_BRIDGECO_PLUG_DIR_OUT       = 0x01
 101 };
 102 enum avc_bridgeco_plug_mode {
 103         AVC_BRIDGECO_PLUG_MODE_UNIT             = 0x00,
 104         AVC_BRIDGECO_PLUG_MODE_SUBUNIT          = 0x01,
 105         AVC_BRIDGECO_PLUG_MODE_FUNCTION_BLOCK   = 0x02
 106 };
 107 enum avc_bridgeco_plug_unit {
 108         AVC_BRIDGECO_PLUG_UNIT_ISOC     = 0x00,
 109         AVC_BRIDGECO_PLUG_UNIT_EXT      = 0x01,
 110         AVC_BRIDGECO_PLUG_UNIT_ASYNC    = 0x02
 111 };
 112 enum avc_bridgeco_plug_type {
 113         AVC_BRIDGECO_PLUG_TYPE_ISOC     = 0x00,
 114         AVC_BRIDGECO_PLUG_TYPE_ASYNC    = 0x01,
 115         AVC_BRIDGECO_PLUG_TYPE_MIDI     = 0x02,
 116         AVC_BRIDGECO_PLUG_TYPE_SYNC     = 0x03,
 117         AVC_BRIDGECO_PLUG_TYPE_ANA      = 0x04,
 118         AVC_BRIDGECO_PLUG_TYPE_DIG      = 0x05
 119 };
 120 static inline void
 121 avc_bridgeco_fill_unit_addr(u8 buf[AVC_BRIDGECO_ADDR_BYTES],
 122                             enum avc_bridgeco_plug_dir dir,
 123                             enum avc_bridgeco_plug_unit unit,
 124                             unsigned int pid)
 125 {
 126         buf[0] = 0xff;  /* Unit */
 127         buf[1] = dir;
 128         buf[2] = AVC_BRIDGECO_PLUG_MODE_UNIT;
 129         buf[3] = unit;
 130         buf[4] = 0xff & pid;
 131         buf[5] = 0xff;  /* reserved */
 132 }
 133 static inline void
 134 avc_bridgeco_fill_msu_addr(u8 buf[AVC_BRIDGECO_ADDR_BYTES],
 135                            enum avc_bridgeco_plug_dir dir,
 136                            unsigned int pid)
 137 {
 138         buf[0] = 0x60;  /* Music subunit */
 139         buf[1] = dir;
 140         buf[2] = AVC_BRIDGECO_PLUG_MODE_SUBUNIT;
 141         buf[3] = 0xff & pid;
 142         buf[4] = 0xff;  /* reserved */
 143         buf[5] = 0xff;  /* reserved */
 144 }
 145 int avc_bridgeco_get_plug_ch_pos(struct fw_unit *unit,
 146                                  u8 addr[AVC_BRIDGECO_ADDR_BYTES],
 147                                  u8 *buf, unsigned int len);
 148 int avc_bridgeco_get_plug_type(struct fw_unit *unit,
 149                                u8 addr[AVC_BRIDGECO_ADDR_BYTES],
 150                                enum avc_bridgeco_plug_type *type);
 151 int avc_bridgeco_get_plug_section_type(struct fw_unit *unit,
 152                                        u8 addr[AVC_BRIDGECO_ADDR_BYTES],
 153                                        unsigned int id, u8 *type);
 154 int avc_bridgeco_get_plug_input(struct fw_unit *unit,
 155                                 u8 addr[AVC_BRIDGECO_ADDR_BYTES],
 156                                 u8 input[7]);
 157 int avc_bridgeco_get_plug_strm_fmt(struct fw_unit *unit,
 158                                    u8 addr[AVC_BRIDGECO_ADDR_BYTES], u8 *buf,
 159                                    unsigned int *len, unsigned int eid);
 160
 161 /* for AMDTP streaming */
 162 int snd_bebob_stream_get_rate(struct snd_bebob *bebob, unsigned int *rate);
 163 int snd_bebob_stream_set_rate(struct snd_bebob *bebob, unsigned int rate);
 164 int snd_bebob_stream_check_internal_clock(struct snd_bebob *bebob,
 165                                           bool *internal);
 166 int snd_bebob_stream_discover(struct snd_bebob *bebob);
 167 int snd_bebob_stream_map(struct snd_bebob *bebob,
 168                          struct amdtp_stream *stream);
 169 int snd_bebob_stream_init_duplex(struct snd_bebob *bebob);
 170 int snd_bebob_stream_start_duplex(struct snd_bebob *bebob, int rate);
 171 void snd_bebob_stream_stop_duplex(struct snd_bebob *bebob);
 172 void snd_bebob_stream_update_duplex(struct snd_bebob *bebob);
 173 void snd_bebob_stream_destroy_duplex(struct snd_bebob *bebob);
 174
 175 void snd_bebob_proc_init(struct snd_bebob *bebob);
 176
 177 #define SND_BEBOB_DEV_ENTRY(vendor, model) \
 178 { \
 179         .match_flags    = IEEE1394_MATCH_VENDOR_ID | \
 180                           IEEE1394_MATCH_MODEL_ID, \
 181         .vendor_id      = vendor, \
 182         .model_id       = model, \
 183 }
 184
 185 #endif