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
  16 #include <sound/control.h>
  17 #include <sound/core.h>
  18 #include <sound/initval.h>
  19 #include <sound/pcm.h>
  20 #include <sound/pcm_params.h>
  21 #include <sound/info.h>
  22
  23 #include "../lib.h"
  24 #include "../fcp.h"
  25 #include "../packets-buffer.h"
  26 #include "../iso-resources.h"
  27 #include "../amdtp.h"
  28 #include "../cmp.h"
  29
  30 struct device_info {
  31         const char *driver_name;
  32         const char *vendor_name;
  33         const char *model_name;
  34         unsigned int mixer_channels;
  35         u8 mute_fb_id;
  36         u8 volume_fb_id;
  37 };
  38
  39 /* This is an arbitrary number for convinience. */
  40 #define SND_OXFW_STREAM_FORMAT_ENTRIES  10
  41 struct snd_oxfw {
  42         struct snd_card *card;
  43         struct fw_unit *unit;
  44         const struct device_info *device_info;
  45         struct mutex mutex;
  46
  47         u8 *rx_stream_formats[SND_OXFW_STREAM_FORMAT_ENTRIES];
  48         bool assumed;
  49         struct cmp_connection in_conn;
  50         struct amdtp_stream rx_stream;
  51
  52         bool mute;
  53         s16 volume[6];
  54         s16 volume_min;
  55         s16 volume_max;
  56 };
  57
  58 /*
  59  * AV/C Stream Format Information Specification 1.1 Working Draft
  60  * (Apr 2005, 1394TA)
  61  */
  62 int avc_stream_set_format(struct fw_unit *unit, enum avc_general_plug_dir dir,
  63                           unsigned int pid, u8 *format, unsigned int len);
  64 int avc_stream_get_format(struct fw_unit *unit,
  65                           enum avc_general_plug_dir dir, unsigned int pid,
  66                           u8 *buf, unsigned int *len, unsigned int eid);
  67 static inline int
  68 avc_stream_get_format_single(struct fw_unit *unit,
  69                              enum avc_general_plug_dir dir, unsigned int pid,
  70                              u8 *buf, unsigned int *len)
  71 {
  72         return avc_stream_get_format(unit, dir, pid, buf, len, 0xff);
  73 }
  74 static inline int
  75 avc_stream_get_format_list(struct fw_unit *unit,
  76                            enum avc_general_plug_dir dir, unsigned int pid,
  77                            u8 *buf, unsigned int *len,
  78                            unsigned int eid)
  79 {
  80         return avc_stream_get_format(unit, dir, pid, buf, len, eid);
  81 }
  82
  83 /*
  84  * AV/C Digital Interface Command Set General Specification 4.2
  85  * (Sep 2004, 1394TA)
  86  */
  87 int avc_general_inquiry_sig_fmt(struct fw_unit *unit, unsigned int rate,
  88                                 enum avc_general_plug_dir dir,
  89                                 unsigned short pid);
  90
  91 int snd_oxfw_stream_init_simplex(struct snd_oxfw *oxfw);
  92 int snd_oxfw_stream_start_simplex(struct snd_oxfw *oxfw, unsigned int rate,
  93                                   unsigned int pcm_channels);
  94 void snd_oxfw_stream_stop_simplex(struct snd_oxfw *oxfw);
  95 void snd_oxfw_stream_destroy_simplex(struct snd_oxfw *oxfw);
  96 void snd_oxfw_stream_update_simplex(struct snd_oxfw *oxfw);
  97
  98 struct snd_oxfw_stream_formation {
  99         unsigned int rate;
 100         unsigned int pcm;
 101         unsigned int midi;
 102 };
 103 int snd_oxfw_stream_parse_format(u8 *format,
 104                                  struct snd_oxfw_stream_formation *formation);
 105 int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw,
 106                                 enum avc_general_plug_dir dir,
 107                                 struct snd_oxfw_stream_formation *formation);
 108 int snd_oxfw_stream_discover(struct snd_oxfw *oxfw);
 109
 110 int snd_oxfw_create_pcm(struct snd_oxfw *oxfw);
 111
 112 int snd_oxfw_create_mixer(struct snd_oxfw *oxfw);
 113
 114 void snd_oxfw_proc_init(struct snd_oxfw *oxfw);