sound/firewire/oxfw/oxfw.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * oxfw.h - a part of driver for OXFW970/971 based devices
   4  *
   5  * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
   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 #include <linux/sched/signal.h>
  17
  18 #include <sound/control.h>
  19 #include <sound/core.h>
  20 #include <sound/initval.h>
  21 #include <sound/pcm.h>
  22 #include <sound/pcm_params.h>
  23 #include <sound/info.h>
  24 #include <sound/rawmidi.h>
  25 #include <sound/firewire.h>
  26 #include <sound/hwdep.h>
  27
  28 #include "../lib.h"
  29 #include "../fcp.h"
  30 #include "../packets-buffer.h"
  31 #include "../iso-resources.h"
  32 #include "../amdtp-am824.h"
  33 #include "../cmp.h"
  34
  35 /* This is an arbitrary number for convinience. */
  36 #define SND_OXFW_STREAM_FORMAT_ENTRIES  10
  37 struct snd_oxfw {
  38         struct snd_card *card;
  39         struct fw_unit *unit;
  40         struct mutex mutex;
  41         spinlock_t lock;
  42
  43         bool registered;
  44         struct delayed_work dwork;
  45
  46         bool wrong_dbs;
  47         bool has_output;
  48         bool has_input;
  49         u8 *tx_stream_formats[SND_OXFW_STREAM_FORMAT_ENTRIES];
  50         u8 *rx_stream_formats[SND_OXFW_STREAM_FORMAT_ENTRIES];
  51         bool assumed;
  52         struct cmp_connection out_conn;
  53         struct cmp_connection in_conn;
  54         struct amdtp_stream tx_stream;
  55         struct amdtp_stream rx_stream;
  56         unsigned int substreams_count;
  57
  58         unsigned int midi_input_ports;
  59         unsigned int midi_output_ports;
  60
  61         int dev_lock_count;
  62         bool dev_lock_changed;
  63         wait_queue_head_t hwdep_wait;
  64
  65         const struct ieee1394_device_id *entry;
  66         void *spec;
  67
  68         struct amdtp_domain domain;
  69 };
  70
  71 /*
  72  * AV/C Stream Format Information Specification 1.1 Working Draft
  73  * (Apr 2005, 1394TA)
  74  */
  75 int avc_stream_set_format(struct fw_unit *unit, enum avc_general_plug_dir dir,
  76                           unsigned int pid, u8 *format, unsigned int len);
  77 int avc_stream_get_format(struct fw_unit *unit,
  78                           enum avc_general_plug_dir dir, unsigned int pid,
  79                           u8 *buf, unsigned int *len, unsigned int eid);
  80 static inline int
  81 avc_stream_get_format_single(struct fw_unit *unit,
  82                              enum avc_general_plug_dir dir, unsigned int pid,
  83                              u8 *buf, unsigned int *len)
  84 {
  85         return avc_stream_get_format(unit, dir, pid, buf, len, 0xff);
  86 }
  87 static inline int
  88 avc_stream_get_format_list(struct fw_unit *unit,
  89                            enum avc_general_plug_dir dir, unsigned int pid,
  90                            u8 *buf, unsigned int *len,
  91                            unsigned int eid)
  92 {
  93         return avc_stream_get_format(unit, dir, pid, buf, len, eid);
  94 }
  95
  96 /*
  97  * AV/C Digital Interface Command Set General Specification 4.2
  98  * (Sep 2004, 1394TA)
  99  */
 100 int avc_general_inquiry_sig_fmt(struct fw_unit *unit, unsigned int rate,
 101                                 enum avc_general_plug_dir dir,
 102                                 unsigned short pid);
 103
 104 int snd_oxfw_stream_init_duplex(struct snd_oxfw *oxfw);
 105 int snd_oxfw_stream_reserve_duplex(struct snd_oxfw *oxfw,
 106                                    struct amdtp_stream *stream,
 107                                    unsigned int rate, unsigned int pcm_channels,
 108                                    unsigned int frames_per_period,
 109                                    unsigned int frames_per_buffer);
 110 int snd_oxfw_stream_start_duplex(struct snd_oxfw *oxfw);
 111 void snd_oxfw_stream_stop_duplex(struct snd_oxfw *oxfw);
 112 void snd_oxfw_stream_destroy_duplex(struct snd_oxfw *oxfw);
 113 void snd_oxfw_stream_update_duplex(struct snd_oxfw *oxfw);
 114
 115 struct snd_oxfw_stream_formation {
 116         unsigned int rate;
 117         unsigned int pcm;
 118         unsigned int midi;
 119 };
 120 int snd_oxfw_stream_parse_format(u8 *format,
 121                                  struct snd_oxfw_stream_formation *formation);
 122 int snd_oxfw_stream_get_current_formation(struct snd_oxfw *oxfw,
 123                                 enum avc_general_plug_dir dir,
 124                                 struct snd_oxfw_stream_formation *formation);
 125
 126 int snd_oxfw_stream_discover(struct snd_oxfw *oxfw);
 127
 128 void snd_oxfw_stream_lock_changed(struct snd_oxfw *oxfw);
 129 int snd_oxfw_stream_lock_try(struct snd_oxfw *oxfw);
 130 void snd_oxfw_stream_lock_release(struct snd_oxfw *oxfw);
 131
 132 int snd_oxfw_create_pcm(struct snd_oxfw *oxfw);
 133
 134 void snd_oxfw_proc_init(struct snd_oxfw *oxfw);
 135
 136 int snd_oxfw_create_midi(struct snd_oxfw *oxfw);
 137
 138 int snd_oxfw_create_hwdep(struct snd_oxfw *oxfw);
 139
 140 int snd_oxfw_add_spkr(struct snd_oxfw *oxfw, bool is_lacie);
 141 int snd_oxfw_scs1x_add(struct snd_oxfw *oxfw);
 142 void snd_oxfw_scs1x_update(struct snd_oxfw *oxfw);