sound/firewire/oxfw/oxfw.h

   1 /*
   2  * oxfw.h - a part of driver for OXFW970/971 based devices
   3  *
   4  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
   5  * Licensed under the terms of the GNU General Public License, version 2.
   6  */
   7
   8 #include <linux/device.h>
   9 #include <linux/firewire.h>
  10 #include <linux/firewire-constants.h>
  11 #include <linux/module.h>
  12 #include <linux/mod_devicetable.h>
  13 #include <linux/mutex.h>
  14 #include <linux/slab.h>
  15 #include <linux/compat.h>
  16
  17 #include <sound/control.h>
  18 #include <sound/core.h>
  19 #include <sound/initval.h>
  20 #include <sound/pcm.h>
  21 #include <sound/pcm_params.h>
  22 #include <sound/info.h>
  23 #include <sound/rawmidi.h>
  24 #include <sound/firewire.h>
  25 #include <sound/hwdep.h>
  26
  27 #include "../lib.h"
  28 #include "../fcp.h"
  29 #include "../packets-buffer.h"
  30 #include "../iso-resources.h"
  31 #include "../amdtp.h"
  32 #include "../cmp.h"
  33
  34 struct device_info {
  35         const char *driver_name;
  36         const char *vendor_name;
  37         const char *model_name;
  38         unsigned int mixer_channels;
  39         u8 mute_fb_id;
  40         u8 volume_fb_id;
  41 };
  42
  43 /* This is an arbitrary number for convinience. */
  44 #define SND_OXFW_STREAM_FORMAT_ENTRIES  10
  45 struct snd_oxfw {
  46         struct snd_card *card;
  47         struct fw_unit *unit;
  48         const struct device_info *device_info;
  49         struct mutex mutex;
  50         spinlock_t lock;
  51
  52         bool has_output;
  53         u8 *tx_stream_formats[SND_OXFW_STREAM_FORMAT_ENTRIES];
  54         u8 *rx_stream_formats[SND_OXFW_STREAM_FORMAT_ENTRIES];
  55         bool assumed;
  56         struct cmp_connection out_conn;
  57         struct cmp_connection in_conn;
  58         struct amdtp_stream tx_stream;
  59         struct amdtp_stream rx_stream;
  60         unsigned int capture_substreams;
  61         unsigned int playback_substreams;
  62
  63         unsigned int midi_input_ports;
  64         unsigned int midi_output_ports;
  65
  66         bool mute;
  67         s16 volume[6];
  68         s16 volume_min;
  69         s16 volume_max;
  70
  71         int dev_lock_count;
  72         bool dev_lock_changed;
  73         wait_queue_head_t hwdep_wait;
  74 };
  75
  76 /*
  77  * AV/C Stream Format Information Specification 1.1 Working Draft
  78  * (Apr 2005, 1394TA)
  79  */
  80 int avc_stream_set_format(struct fw_unit *unit, enum avc_general_plug_dir dir,
  81                           unsigned int pid, u8 *format, unsigned int len);
  82 int avc_stream_get_format(struct fw_unit *unit,
  83                           enum avc_general_plug_dir dir, unsigned int pid,
  84                           u8 *buf, unsigned int *len, unsigned int eid);
  85 static inline int
  86 avc_stream_get_format_single(struct fw_unit *unit,
  87                              enum avc_general_plug_dir dir, unsigned int pid,
  88                              u8 *buf, unsigned int *len)
  89 {
  90         return avc_stream_get_format(unit, dir, pid, buf, len, 0xff);
  91 }
  92 static inline int
  93 avc_stream_get_format_list(struct fw_unit *unit,
  94                            enum avc_general_plug_dir dir, unsigned int pid,
  95                            u8 *buf, unsigned int *len,
  96                            unsigned int eid)
  97 {
  98         return avc_stream_get_format(unit, dir, pid, buf, len, eid);
  99 }
 100
 101 /*
 102  * AV/C Digital Interface Command Set General Specification 4.2
 103  * (Sep 2004, 1394TA)
 104  */
 105 int avc_general_inquiry_sig_fmt(struct fw_unit *unit, unsigned int rate,
 106                                 enum avc_general_plug_dir dir,
 107                                 unsigned short pid);
 108
 109 int snd_oxfw_stream_init_simplex(struct snd_oxfw *oxfw,
 110                                  struct amdtp_stream *stream);
 111 int snd_oxfw_stream_start_simplex(struct snd_oxfw *oxfw,
 112                                   struct amdtp_stream *stream,
 113                                   unsigned int rate, unsigned int pcm_channels);
 114 void snd_oxfw_stream_stop_simplex(struct snd_oxfw *oxfw,
 115                                   struct amdtp_stream *stream);
 116 void snd_oxfw_stream_destroy_simplex(struct snd_oxfw *oxfw,
 117                                      struct amdtp_stream *stream);
 118 void snd_oxfw_stream_update_simplex(struct snd_oxfw *oxfw,
 119                                     struct amdtp_stream *stream);
 120
 121 struct snd_oxfw_stream_formation {
 122         unsigned int rate;
 123         unsigned int pcm;
 124         unsigned int midi;
 125 };
 126 int snd_oxfw_stream_parse_format(u8 *format,
 127                                  struct snd_oxfw_stream_formation *formation);
 128 int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw,
 129                                 enum avc_general_plug_dir dir,
 130                                 struct snd_oxfw_stream_formation *formation);
 131
 132 int snd_oxfw_stream_discover(struct snd_oxfw *oxfw);
 133
 134 void snd_oxfw_stream_lock_changed(struct snd_oxfw *oxfw);
 135 int snd_oxfw_stream_lock_try(struct snd_oxfw *oxfw);
 136 void snd_oxfw_stream_lock_release(struct snd_oxfw *oxfw);
 137
 138 int snd_oxfw_create_pcm(struct snd_oxfw *oxfw);
 139
 140 int snd_oxfw_create_mixer(struct snd_oxfw *oxfw);
 141
 142 void snd_oxfw_proc_init(struct snd_oxfw *oxfw);
 143
 144 int snd_oxfw_create_midi(struct snd_oxfw *oxfw);
 145
 146 int snd_oxfw_create_hwdep(struct snd_oxfw *oxfw);