Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 1 | /* |
| 2 | * digi00x.c - a part of driver for Digidesign Digi 002/003 family |
| 3 | * |
| 4 | * Copyright (c) 2014-2015 Takashi Sakamoto |
| 5 | * |
| 6 | * Licensed under the terms of the GNU General Public License, version 2. |
| 7 | */ |
| 8 | |
| 9 | #include "digi00x.h" |
| 10 | |
| 11 | MODULE_DESCRIPTION("Digidesign Digi 002/003 family Driver"); |
| 12 | MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>"); |
| 13 | MODULE_LICENSE("GPL v2"); |
| 14 | |
| 15 | #define VENDOR_DIGIDESIGN 0x00a07e |
| 16 | #define MODEL_DIGI00X 0x000002 |
| 17 | |
| 18 | static int name_card(struct snd_dg00x *dg00x) |
| 19 | { |
| 20 | struct fw_device *fw_dev = fw_parent_device(dg00x->unit); |
| 21 | char name[32] = {0}; |
| 22 | char *model; |
| 23 | int err; |
| 24 | |
| 25 | err = fw_csr_string(dg00x->unit->directory, CSR_MODEL, name, |
| 26 | sizeof(name)); |
| 27 | if (err < 0) |
| 28 | return err; |
| 29 | |
| 30 | model = skip_spaces(name); |
| 31 | |
| 32 | strcpy(dg00x->card->driver, "Digi00x"); |
| 33 | strcpy(dg00x->card->shortname, model); |
| 34 | strcpy(dg00x->card->mixername, model); |
| 35 | snprintf(dg00x->card->longname, sizeof(dg00x->card->longname), |
| 36 | "Digidesign %s, GUID %08x%08x at %s, S%d", model, |
Takashi Sakamoto | bd04809 | 2015-10-18 22:39:53 +0900 | [diff] [blame] | 37 | fw_dev->config_rom[3], fw_dev->config_rom[4], |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 38 | dev_name(&dg00x->unit->device), 100 << fw_dev->max_speed); |
| 39 | |
| 40 | return 0; |
| 41 | } |
| 42 | |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 43 | static void dg00x_free(struct snd_dg00x *dg00x) |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 44 | { |
Takashi Sakamoto | 3a2a179 | 2015-09-30 09:39:18 +0900 | [diff] [blame] | 45 | snd_dg00x_stream_destroy_duplex(dg00x); |
Takashi Sakamoto | 44b7308 | 2015-09-30 09:39:22 +0900 | [diff] [blame] | 46 | snd_dg00x_transaction_unregister(dg00x); |
Takashi Sakamoto | 3a2a179 | 2015-09-30 09:39:18 +0900 | [diff] [blame] | 47 | |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 48 | fw_unit_put(dg00x->unit); |
| 49 | |
| 50 | mutex_destroy(&dg00x->mutex); |
| 51 | } |
| 52 | |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 53 | static void dg00x_card_free(struct snd_card *card) |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 54 | { |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 55 | dg00x_free(card->private_data); |
| 56 | } |
| 57 | |
| 58 | static void do_registration(struct work_struct *work) |
| 59 | { |
| 60 | struct snd_dg00x *dg00x = |
| 61 | container_of(work, struct snd_dg00x, dwork.work); |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 62 | int err; |
| 63 | |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 64 | if (dg00x->registered) |
| 65 | return; |
| 66 | |
| 67 | err = snd_card_new(&dg00x->unit->device, -1, NULL, THIS_MODULE, 0, |
| 68 | &dg00x->card); |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 69 | if (err < 0) |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 70 | return; |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 71 | |
| 72 | err = name_card(dg00x); |
| 73 | if (err < 0) |
| 74 | goto error; |
| 75 | |
Takashi Sakamoto | 3a2a179 | 2015-09-30 09:39:18 +0900 | [diff] [blame] | 76 | err = snd_dg00x_stream_init_duplex(dg00x); |
| 77 | if (err < 0) |
| 78 | goto error; |
| 79 | |
Takashi Sakamoto | 927f17d | 2015-09-30 09:39:19 +0900 | [diff] [blame] | 80 | snd_dg00x_proc_init(dg00x); |
| 81 | |
Takashi Sakamoto | 0120d0f | 2015-09-30 09:39:20 +0900 | [diff] [blame] | 82 | err = snd_dg00x_create_pcm_devices(dg00x); |
| 83 | if (err < 0) |
| 84 | goto error; |
| 85 | |
Takashi Sakamoto | 9fbfd38 | 2015-10-11 12:30:16 +0900 | [diff] [blame] | 86 | err = snd_dg00x_create_midi_devices(dg00x); |
| 87 | if (err < 0) |
| 88 | goto error; |
| 89 | |
Takashi Sakamoto | 660dd3d | 2015-09-30 09:39:21 +0900 | [diff] [blame] | 90 | err = snd_dg00x_create_hwdep_device(dg00x); |
| 91 | if (err < 0) |
| 92 | goto error; |
| 93 | |
Takashi Sakamoto | 44b7308 | 2015-09-30 09:39:22 +0900 | [diff] [blame] | 94 | err = snd_dg00x_transaction_register(dg00x); |
| 95 | if (err < 0) |
| 96 | goto error; |
| 97 | |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 98 | err = snd_card_register(dg00x->card); |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 99 | if (err < 0) |
| 100 | goto error; |
| 101 | |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 102 | dg00x->card->private_free = dg00x_card_free; |
| 103 | dg00x->card->private_data = dg00x; |
| 104 | dg00x->registered = true; |
| 105 | |
| 106 | return; |
| 107 | error: |
| 108 | snd_dg00x_transaction_unregister(dg00x); |
| 109 | snd_dg00x_stream_destroy_duplex(dg00x); |
| 110 | snd_card_free(dg00x->card); |
| 111 | dev_info(&dg00x->unit->device, |
| 112 | "Sound card registration failed: %d\n", err); |
| 113 | } |
| 114 | |
| 115 | static int snd_dg00x_probe(struct fw_unit *unit, |
| 116 | const struct ieee1394_device_id *entry) |
| 117 | { |
| 118 | struct snd_dg00x *dg00x; |
| 119 | |
| 120 | /* Allocate this independent of sound card instance. */ |
| 121 | dg00x = kzalloc(sizeof(struct snd_dg00x), GFP_KERNEL); |
| 122 | if (dg00x == NULL) |
| 123 | return -ENOMEM; |
| 124 | |
| 125 | dg00x->unit = fw_unit_get(unit); |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 126 | dev_set_drvdata(&unit->device, dg00x); |
| 127 | |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 128 | mutex_init(&dg00x->mutex); |
| 129 | spin_lock_init(&dg00x->lock); |
| 130 | init_waitqueue_head(&dg00x->hwdep_wait); |
| 131 | |
| 132 | /* Allocate and register this sound card later. */ |
| 133 | INIT_DEFERRABLE_WORK(&dg00x->dwork, do_registration); |
| 134 | snd_fw_schedule_registration(unit, &dg00x->dwork); |
| 135 | |
| 136 | return 0; |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | static void snd_dg00x_update(struct fw_unit *unit) |
| 140 | { |
Takashi Sakamoto | 3a2a179 | 2015-09-30 09:39:18 +0900 | [diff] [blame] | 141 | struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device); |
| 142 | |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 143 | /* Postpone a workqueue for deferred registration. */ |
| 144 | if (!dg00x->registered) |
| 145 | snd_fw_schedule_registration(unit, &dg00x->dwork); |
| 146 | |
Takashi Sakamoto | 44b7308 | 2015-09-30 09:39:22 +0900 | [diff] [blame] | 147 | snd_dg00x_transaction_reregister(dg00x); |
| 148 | |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 149 | /* |
| 150 | * After registration, userspace can start packet streaming, then this |
| 151 | * code block works fine. |
| 152 | */ |
| 153 | if (dg00x->registered) { |
| 154 | mutex_lock(&dg00x->mutex); |
| 155 | snd_dg00x_stream_update_duplex(dg00x); |
| 156 | mutex_unlock(&dg00x->mutex); |
| 157 | } |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | static void snd_dg00x_remove(struct fw_unit *unit) |
| 161 | { |
| 162 | struct snd_dg00x *dg00x = dev_get_drvdata(&unit->device); |
| 163 | |
Takashi Sakamoto | 86c8dd7 | 2016-03-31 08:47:08 +0900 | [diff] [blame] | 164 | /* |
| 165 | * Confirm to stop the work for registration before the sound card is |
| 166 | * going to be released. The work is not scheduled again because bus |
| 167 | * reset handler is not called anymore. |
| 168 | */ |
| 169 | cancel_delayed_work_sync(&dg00x->dwork); |
| 170 | |
| 171 | if (dg00x->registered) { |
| 172 | /* No need to wait for releasing card object in this context. */ |
| 173 | snd_card_free_when_closed(dg00x->card); |
| 174 | } else { |
| 175 | /* Don't forget this case. */ |
| 176 | dg00x_free(dg00x); |
| 177 | } |
Takashi Sakamoto | 9edf723 | 2015-09-30 09:39:16 +0900 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | static const struct ieee1394_device_id snd_dg00x_id_table[] = { |
| 181 | /* Both of 002/003 use the same ID. */ |
| 182 | { |
| 183 | .match_flags = IEEE1394_MATCH_VENDOR_ID | |
| 184 | IEEE1394_MATCH_MODEL_ID, |
| 185 | .vendor_id = VENDOR_DIGIDESIGN, |
| 186 | .model_id = MODEL_DIGI00X, |
| 187 | }, |
| 188 | {} |
| 189 | }; |
| 190 | MODULE_DEVICE_TABLE(ieee1394, snd_dg00x_id_table); |
| 191 | |
| 192 | static struct fw_driver dg00x_driver = { |
| 193 | .driver = { |
| 194 | .owner = THIS_MODULE, |
| 195 | .name = "snd-firewire-digi00x", |
| 196 | .bus = &fw_bus_type, |
| 197 | }, |
| 198 | .probe = snd_dg00x_probe, |
| 199 | .update = snd_dg00x_update, |
| 200 | .remove = snd_dg00x_remove, |
| 201 | .id_table = snd_dg00x_id_table, |
| 202 | }; |
| 203 | |
| 204 | static int __init snd_dg00x_init(void) |
| 205 | { |
| 206 | return driver_register(&dg00x_driver.driver); |
| 207 | } |
| 208 | |
| 209 | static void __exit snd_dg00x_exit(void) |
| 210 | { |
| 211 | driver_unregister(&dg00x_driver.driver); |
| 212 | } |
| 213 | |
| 214 | module_init(snd_dg00x_init); |
| 215 | module_exit(snd_dg00x_exit); |