Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 1 | /* |
| 2 | * fireworks.c - a part of driver for Fireworks based devices |
| 3 | * |
| 4 | * Copyright (c) 2009-2010 Clemens Ladisch |
| 5 | * Copyright (c) 2013-2014 Takashi Sakamoto |
| 6 | * |
| 7 | * Licensed under the terms of the GNU General Public License, version 2. |
| 8 | */ |
| 9 | |
| 10 | /* |
| 11 | * Fireworks is a board module which Echo Audio produced. This module consists |
| 12 | * of three chipsets: |
| 13 | * - Communication chipset for IEEE1394 PHY/Link and IEC 61883-1/6 |
| 14 | * - DSP or/and FPGA for signal processing |
| 15 | * - Flash Memory to store firmwares |
| 16 | */ |
| 17 | |
| 18 | #include "fireworks.h" |
| 19 | |
| 20 | MODULE_DESCRIPTION("Echo Fireworks driver"); |
| 21 | MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>"); |
| 22 | MODULE_LICENSE("GPL v2"); |
| 23 | |
| 24 | static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; |
| 25 | static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; |
| 26 | static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; |
Takashi Sakamoto | 555e8a8 | 2014-04-25 22:45:13 +0900 | [diff] [blame] | 27 | unsigned int snd_efw_resp_buf_size = 1024; |
| 28 | bool snd_efw_resp_buf_debug = false; |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 29 | |
| 30 | module_param_array(index, int, NULL, 0444); |
| 31 | MODULE_PARM_DESC(index, "card index"); |
| 32 | module_param_array(id, charp, NULL, 0444); |
| 33 | MODULE_PARM_DESC(id, "ID string"); |
| 34 | module_param_array(enable, bool, NULL, 0444); |
| 35 | MODULE_PARM_DESC(enable, "enable Fireworks sound card"); |
Takashi Sakamoto | 555e8a8 | 2014-04-25 22:45:13 +0900 | [diff] [blame] | 36 | module_param_named(resp_buf_size, snd_efw_resp_buf_size, uint, 0444); |
| 37 | MODULE_PARM_DESC(resp_buf_size, |
| 38 | "response buffer size (max 4096, default 1024)"); |
| 39 | module_param_named(resp_buf_debug, snd_efw_resp_buf_debug, bool, 0444); |
| 40 | MODULE_PARM_DESC(resp_buf_debug, "store all responses to buffer"); |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 41 | |
| 42 | static DEFINE_MUTEX(devices_mutex); |
| 43 | static DECLARE_BITMAP(devices_used, SNDRV_CARDS); |
| 44 | |
| 45 | #define VENDOR_LOUD 0x000ff2 |
| 46 | #define MODEL_MACKIE_400F 0x00400f |
| 47 | #define MODEL_MACKIE_1200F 0x01200f |
| 48 | |
| 49 | #define VENDOR_ECHO 0x001486 |
| 50 | #define MODEL_ECHO_AUDIOFIRE_12 0x00af12 |
| 51 | #define MODEL_ECHO_AUDIOFIRE_12HD 0x0af12d |
| 52 | #define MODEL_ECHO_AUDIOFIRE_12_APPLE 0x0af12a |
| 53 | /* This is applied for AudioFire8 (until 2009 July) */ |
| 54 | #define MODEL_ECHO_AUDIOFIRE_8 0x000af8 |
| 55 | #define MODEL_ECHO_AUDIOFIRE_2 0x000af2 |
| 56 | #define MODEL_ECHO_AUDIOFIRE_4 0x000af4 |
| 57 | /* AudioFire9 is applied for AudioFire8(since 2009 July) and AudioFirePre8 */ |
| 58 | #define MODEL_ECHO_AUDIOFIRE_9 0x000af9 |
| 59 | /* unknown as product */ |
| 60 | #define MODEL_ECHO_FIREWORKS_8 0x0000f8 |
| 61 | #define MODEL_ECHO_FIREWORKS_HDMI 0x00afd1 |
| 62 | |
| 63 | #define VENDOR_GIBSON 0x00075b |
| 64 | /* for Robot Interface Pack of Dark Fire, Dusk Tiger, Les Paul Standard 2010 */ |
| 65 | #define MODEL_GIBSON_RIP 0x00afb2 |
| 66 | /* unknown as product */ |
| 67 | #define MODEL_GIBSON_GOLDTOP 0x00afb9 |
| 68 | |
Takashi Sakamoto | bde8a8f | 2014-04-25 22:45:01 +0900 | [diff] [blame] | 69 | /* part of hardware capability flags */ |
| 70 | #define FLAG_RESP_ADDR_CHANGABLE 0 |
| 71 | |
| 72 | static int |
| 73 | get_hardware_info(struct snd_efw *efw) |
| 74 | { |
| 75 | struct fw_device *fw_dev = fw_parent_device(efw->unit); |
| 76 | struct snd_efw_hwinfo *hwinfo; |
| 77 | char version[12] = {0}; |
| 78 | int err; |
| 79 | |
| 80 | hwinfo = kzalloc(sizeof(struct snd_efw_hwinfo), GFP_KERNEL); |
| 81 | if (hwinfo == NULL) |
| 82 | return -ENOMEM; |
| 83 | |
| 84 | err = snd_efw_command_get_hwinfo(efw, hwinfo); |
| 85 | if (err < 0) |
| 86 | goto end; |
| 87 | |
| 88 | /* firmware version for communication chipset */ |
| 89 | snprintf(version, sizeof(version), "%u.%u", |
| 90 | (hwinfo->arm_version >> 24) & 0xff, |
| 91 | (hwinfo->arm_version >> 16) & 0xff); |
Takashi Sakamoto | d9cd006 | 2014-04-25 22:45:06 +0900 | [diff] [blame] | 92 | efw->firmware_version = hwinfo->arm_version; |
Takashi Sakamoto | bde8a8f | 2014-04-25 22:45:01 +0900 | [diff] [blame] | 93 | |
| 94 | strcpy(efw->card->driver, "Fireworks"); |
| 95 | strcpy(efw->card->shortname, hwinfo->model_name); |
| 96 | strcpy(efw->card->mixername, hwinfo->model_name); |
| 97 | snprintf(efw->card->longname, sizeof(efw->card->longname), |
| 98 | "%s %s v%s, GUID %08x%08x at %s, S%d", |
| 99 | hwinfo->vendor_name, hwinfo->model_name, version, |
| 100 | hwinfo->guid_hi, hwinfo->guid_lo, |
| 101 | dev_name(&efw->unit->device), 100 << fw_dev->max_speed); |
Takashi Sakamoto | bde8a8f | 2014-04-25 22:45:01 +0900 | [diff] [blame] | 102 | |
| 103 | if (hwinfo->flags & BIT(FLAG_RESP_ADDR_CHANGABLE)) |
| 104 | efw->resp_addr_changable = true; |
Takashi Sakamoto | 315fd41 | 2014-04-25 22:45:02 +0900 | [diff] [blame] | 105 | |
| 106 | efw->supported_sampling_rate = 0; |
| 107 | if ((hwinfo->min_sample_rate <= 22050) |
| 108 | && (22050 <= hwinfo->max_sample_rate)) |
| 109 | efw->supported_sampling_rate |= SNDRV_PCM_RATE_22050; |
| 110 | if ((hwinfo->min_sample_rate <= 32000) |
| 111 | && (32000 <= hwinfo->max_sample_rate)) |
| 112 | efw->supported_sampling_rate |= SNDRV_PCM_RATE_32000; |
| 113 | if ((hwinfo->min_sample_rate <= 44100) |
| 114 | && (44100 <= hwinfo->max_sample_rate)) |
| 115 | efw->supported_sampling_rate |= SNDRV_PCM_RATE_44100; |
| 116 | if ((hwinfo->min_sample_rate <= 48000) |
| 117 | && (48000 <= hwinfo->max_sample_rate)) |
| 118 | efw->supported_sampling_rate |= SNDRV_PCM_RATE_48000; |
| 119 | if ((hwinfo->min_sample_rate <= 88200) |
| 120 | && (88200 <= hwinfo->max_sample_rate)) |
| 121 | efw->supported_sampling_rate |= SNDRV_PCM_RATE_88200; |
| 122 | if ((hwinfo->min_sample_rate <= 96000) |
| 123 | && (96000 <= hwinfo->max_sample_rate)) |
| 124 | efw->supported_sampling_rate |= SNDRV_PCM_RATE_96000; |
| 125 | if ((hwinfo->min_sample_rate <= 176400) |
| 126 | && (176400 <= hwinfo->max_sample_rate)) |
| 127 | efw->supported_sampling_rate |= SNDRV_PCM_RATE_176400; |
| 128 | if ((hwinfo->min_sample_rate <= 192000) |
| 129 | && (192000 <= hwinfo->max_sample_rate)) |
| 130 | efw->supported_sampling_rate |= SNDRV_PCM_RATE_192000; |
| 131 | |
| 132 | /* the number of MIDI ports, not of MIDI conformant data channels */ |
| 133 | if (hwinfo->midi_out_ports > SND_EFW_MAX_MIDI_OUT_PORTS || |
| 134 | hwinfo->midi_in_ports > SND_EFW_MAX_MIDI_IN_PORTS) { |
| 135 | err = -EIO; |
| 136 | goto end; |
| 137 | } |
| 138 | efw->midi_out_ports = hwinfo->midi_out_ports; |
| 139 | efw->midi_in_ports = hwinfo->midi_in_ports; |
| 140 | |
| 141 | if (hwinfo->amdtp_tx_pcm_channels > AMDTP_MAX_CHANNELS_FOR_PCM || |
| 142 | hwinfo->amdtp_tx_pcm_channels_2x > AMDTP_MAX_CHANNELS_FOR_PCM || |
| 143 | hwinfo->amdtp_tx_pcm_channels_4x > AMDTP_MAX_CHANNELS_FOR_PCM || |
| 144 | hwinfo->amdtp_rx_pcm_channels > AMDTP_MAX_CHANNELS_FOR_PCM || |
| 145 | hwinfo->amdtp_rx_pcm_channels_2x > AMDTP_MAX_CHANNELS_FOR_PCM || |
| 146 | hwinfo->amdtp_rx_pcm_channels_4x > AMDTP_MAX_CHANNELS_FOR_PCM) { |
| 147 | err = -ENOSYS; |
| 148 | goto end; |
| 149 | } |
| 150 | efw->pcm_capture_channels[0] = hwinfo->amdtp_tx_pcm_channels; |
| 151 | efw->pcm_capture_channels[1] = hwinfo->amdtp_tx_pcm_channels_2x; |
| 152 | efw->pcm_capture_channels[2] = hwinfo->amdtp_tx_pcm_channels_4x; |
| 153 | efw->pcm_playback_channels[0] = hwinfo->amdtp_rx_pcm_channels; |
| 154 | efw->pcm_playback_channels[1] = hwinfo->amdtp_rx_pcm_channels_2x; |
| 155 | efw->pcm_playback_channels[2] = hwinfo->amdtp_rx_pcm_channels_4x; |
Takashi Sakamoto | 6a22683 | 2014-04-25 22:45:08 +0900 | [diff] [blame] | 156 | |
| 157 | /* Hardware metering. */ |
| 158 | if (hwinfo->phys_in_grp_count > HWINFO_MAX_CAPS_GROUPS || |
| 159 | hwinfo->phys_out_grp_count > HWINFO_MAX_CAPS_GROUPS) { |
Dan Carpenter | 3961783 | 2014-05-28 19:42:46 +0300 | [diff] [blame] | 160 | err = -EIO; |
Takashi Sakamoto | 6a22683 | 2014-04-25 22:45:08 +0900 | [diff] [blame] | 161 | goto end; |
| 162 | } |
| 163 | efw->phys_in = hwinfo->phys_in; |
| 164 | efw->phys_out = hwinfo->phys_out; |
| 165 | efw->phys_in_grp_count = hwinfo->phys_in_grp_count; |
| 166 | efw->phys_out_grp_count = hwinfo->phys_out_grp_count; |
| 167 | memcpy(&efw->phys_in_grps, hwinfo->phys_in_grps, |
| 168 | sizeof(struct snd_efw_phys_grp) * hwinfo->phys_in_grp_count); |
| 169 | memcpy(&efw->phys_out_grps, hwinfo->phys_out_grps, |
| 170 | sizeof(struct snd_efw_phys_grp) * hwinfo->phys_out_grp_count); |
Takashi Sakamoto | bde8a8f | 2014-04-25 22:45:01 +0900 | [diff] [blame] | 171 | end: |
| 172 | kfree(hwinfo); |
| 173 | return err; |
| 174 | } |
| 175 | |
Takashi Sakamoto | 12ed719 | 2015-02-21 23:54:57 +0900 | [diff] [blame] | 176 | /* |
| 177 | * This module releases the FireWire unit data after all ALSA character devices |
| 178 | * are released by applications. This is for releasing stream data or finishing |
| 179 | * transactions safely. Thus at returning from .remove(), this module still keep |
| 180 | * references for the unit. |
| 181 | */ |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 182 | static void |
| 183 | efw_card_free(struct snd_card *card) |
| 184 | { |
| 185 | struct snd_efw *efw = card->private_data; |
| 186 | |
Takashi Sakamoto | dec8431 | 2015-02-21 23:55:00 +0900 | [diff] [blame] | 187 | snd_efw_stream_destroy_duplex(efw); |
| 188 | snd_efw_transaction_remove_instance(efw); |
Takashi Sakamoto | 12ed719 | 2015-02-21 23:54:57 +0900 | [diff] [blame] | 189 | fw_unit_put(efw->unit); |
| 190 | |
Takashi Sakamoto | dec8431 | 2015-02-21 23:55:00 +0900 | [diff] [blame] | 191 | kfree(efw->resp_buf); |
| 192 | |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 193 | if (efw->card_index >= 0) { |
| 194 | mutex_lock(&devices_mutex); |
| 195 | clear_bit(efw->card_index, devices_used); |
| 196 | mutex_unlock(&devices_mutex); |
| 197 | } |
| 198 | |
| 199 | mutex_destroy(&efw->mutex); |
| 200 | } |
| 201 | |
| 202 | static int |
| 203 | efw_probe(struct fw_unit *unit, |
| 204 | const struct ieee1394_device_id *entry) |
| 205 | { |
| 206 | struct snd_card *card; |
| 207 | struct snd_efw *efw; |
| 208 | int card_index, err; |
| 209 | |
| 210 | mutex_lock(&devices_mutex); |
| 211 | |
| 212 | /* check registered cards */ |
| 213 | for (card_index = 0; card_index < SNDRV_CARDS; ++card_index) { |
| 214 | if (!test_bit(card_index, devices_used) && enable[card_index]) |
| 215 | break; |
| 216 | } |
| 217 | if (card_index >= SNDRV_CARDS) { |
| 218 | err = -ENOENT; |
| 219 | goto end; |
| 220 | } |
| 221 | |
| 222 | err = snd_card_new(&unit->device, index[card_index], id[card_index], |
| 223 | THIS_MODULE, sizeof(struct snd_efw), &card); |
| 224 | if (err < 0) |
| 225 | goto end; |
| 226 | efw = card->private_data; |
| 227 | efw->card_index = card_index; |
| 228 | set_bit(card_index, devices_used); |
| 229 | card->private_free = efw_card_free; |
| 230 | |
| 231 | efw->card = card; |
Takashi Sakamoto | 12ed719 | 2015-02-21 23:54:57 +0900 | [diff] [blame] | 232 | efw->unit = fw_unit_get(unit); |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 233 | mutex_init(&efw->mutex); |
| 234 | spin_lock_init(&efw->lock); |
Takashi Sakamoto | 594ddce | 2014-04-25 22:45:12 +0900 | [diff] [blame] | 235 | init_waitqueue_head(&efw->hwdep_wait); |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 236 | |
Takashi Sakamoto | 555e8a8 | 2014-04-25 22:45:13 +0900 | [diff] [blame] | 237 | /* prepare response buffer */ |
| 238 | snd_efw_resp_buf_size = clamp(snd_efw_resp_buf_size, |
| 239 | SND_EFW_RESPONSE_MAXIMUM_BYTES, 4096U); |
| 240 | efw->resp_buf = kzalloc(snd_efw_resp_buf_size, GFP_KERNEL); |
| 241 | if (efw->resp_buf == NULL) { |
| 242 | err = -ENOMEM; |
| 243 | goto error; |
| 244 | } |
| 245 | efw->pull_ptr = efw->push_ptr = efw->resp_buf; |
| 246 | snd_efw_transaction_add_instance(efw); |
| 247 | |
Takashi Sakamoto | bde8a8f | 2014-04-25 22:45:01 +0900 | [diff] [blame] | 248 | err = get_hardware_info(efw); |
| 249 | if (err < 0) |
| 250 | goto error; |
Takashi Sakamoto | 6970223 | 2014-04-25 22:45:05 +0900 | [diff] [blame] | 251 | if (entry->model_id == MODEL_ECHO_AUDIOFIRE_9) |
| 252 | efw->is_af9 = true; |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 253 | |
Takashi Sakamoto | 6a22683 | 2014-04-25 22:45:08 +0900 | [diff] [blame] | 254 | snd_efw_proc_init(efw); |
| 255 | |
Takashi Sakamoto | a63d3ff | 2014-04-25 22:45:09 +0900 | [diff] [blame] | 256 | if (efw->midi_out_ports || efw->midi_in_ports) { |
| 257 | err = snd_efw_create_midi_devices(efw); |
| 258 | if (err < 0) |
| 259 | goto error; |
| 260 | } |
| 261 | |
Takashi Sakamoto | aa02bb6 | 2014-04-25 22:45:11 +0900 | [diff] [blame] | 262 | err = snd_efw_create_pcm_devices(efw); |
| 263 | if (err < 0) |
| 264 | goto error; |
| 265 | |
Takashi Sakamoto | 594ddce | 2014-04-25 22:45:12 +0900 | [diff] [blame] | 266 | err = snd_efw_create_hwdep_device(efw); |
| 267 | if (err < 0) |
| 268 | goto error; |
| 269 | |
Takashi Sakamoto | 315fd41 | 2014-04-25 22:45:02 +0900 | [diff] [blame] | 270 | err = snd_efw_stream_init_duplex(efw); |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 271 | if (err < 0) |
| 272 | goto error; |
Takashi Sakamoto | bde8a8f | 2014-04-25 22:45:01 +0900 | [diff] [blame] | 273 | |
Takashi Sakamoto | 315fd41 | 2014-04-25 22:45:02 +0900 | [diff] [blame] | 274 | err = snd_card_register(card); |
| 275 | if (err < 0) { |
| 276 | snd_efw_stream_destroy_duplex(efw); |
| 277 | goto error; |
| 278 | } |
| 279 | |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 280 | dev_set_drvdata(&unit->device, efw); |
| 281 | end: |
| 282 | mutex_unlock(&devices_mutex); |
| 283 | return err; |
| 284 | error: |
Takashi Sakamoto | 555e8a8 | 2014-04-25 22:45:13 +0900 | [diff] [blame] | 285 | snd_efw_transaction_remove_instance(efw); |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 286 | mutex_unlock(&devices_mutex); |
| 287 | snd_card_free(card); |
| 288 | return err; |
| 289 | } |
| 290 | |
| 291 | static void efw_update(struct fw_unit *unit) |
| 292 | { |
Takashi Sakamoto | bde8a8f | 2014-04-25 22:45:01 +0900 | [diff] [blame] | 293 | struct snd_efw *efw = dev_get_drvdata(&unit->device); |
Takashi Sakamoto | 315fd41 | 2014-04-25 22:45:02 +0900 | [diff] [blame] | 294 | |
Takashi Sakamoto | bde8a8f | 2014-04-25 22:45:01 +0900 | [diff] [blame] | 295 | snd_efw_transaction_bus_reset(efw->unit); |
Takashi Sakamoto | 315fd41 | 2014-04-25 22:45:02 +0900 | [diff] [blame] | 296 | snd_efw_stream_update_duplex(efw); |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 297 | } |
| 298 | |
| 299 | static void efw_remove(struct fw_unit *unit) |
| 300 | { |
| 301 | struct snd_efw *efw = dev_get_drvdata(&unit->device); |
Takashi Sakamoto | 315fd41 | 2014-04-25 22:45:02 +0900 | [diff] [blame] | 302 | |
Takashi Sakamoto | 12ed719 | 2015-02-21 23:54:57 +0900 | [diff] [blame] | 303 | /* No need to wait for releasing card object in this context. */ |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 304 | snd_card_free_when_closed(efw->card); |
| 305 | } |
| 306 | |
| 307 | static const struct ieee1394_device_id efw_id_table[] = { |
| 308 | SND_EFW_DEV_ENTRY(VENDOR_LOUD, MODEL_MACKIE_400F), |
| 309 | SND_EFW_DEV_ENTRY(VENDOR_LOUD, MODEL_MACKIE_1200F), |
| 310 | SND_EFW_DEV_ENTRY(VENDOR_ECHO, MODEL_ECHO_AUDIOFIRE_8), |
| 311 | SND_EFW_DEV_ENTRY(VENDOR_ECHO, MODEL_ECHO_AUDIOFIRE_12), |
| 312 | SND_EFW_DEV_ENTRY(VENDOR_ECHO, MODEL_ECHO_AUDIOFIRE_12HD), |
| 313 | SND_EFW_DEV_ENTRY(VENDOR_ECHO, MODEL_ECHO_AUDIOFIRE_12_APPLE), |
| 314 | SND_EFW_DEV_ENTRY(VENDOR_ECHO, MODEL_ECHO_AUDIOFIRE_2), |
| 315 | SND_EFW_DEV_ENTRY(VENDOR_ECHO, MODEL_ECHO_AUDIOFIRE_4), |
| 316 | SND_EFW_DEV_ENTRY(VENDOR_ECHO, MODEL_ECHO_AUDIOFIRE_9), |
| 317 | SND_EFW_DEV_ENTRY(VENDOR_ECHO, MODEL_ECHO_FIREWORKS_8), |
| 318 | SND_EFW_DEV_ENTRY(VENDOR_ECHO, MODEL_ECHO_FIREWORKS_HDMI), |
| 319 | SND_EFW_DEV_ENTRY(VENDOR_GIBSON, MODEL_GIBSON_RIP), |
| 320 | SND_EFW_DEV_ENTRY(VENDOR_GIBSON, MODEL_GIBSON_GOLDTOP), |
| 321 | {} |
| 322 | }; |
| 323 | MODULE_DEVICE_TABLE(ieee1394, efw_id_table); |
| 324 | |
| 325 | static struct fw_driver efw_driver = { |
| 326 | .driver = { |
| 327 | .owner = THIS_MODULE, |
| 328 | .name = "snd-fireworks", |
| 329 | .bus = &fw_bus_type, |
| 330 | }, |
| 331 | .probe = efw_probe, |
| 332 | .update = efw_update, |
| 333 | .remove = efw_remove, |
| 334 | .id_table = efw_id_table, |
| 335 | }; |
| 336 | |
| 337 | static int __init snd_efw_init(void) |
| 338 | { |
Takashi Sakamoto | bde8a8f | 2014-04-25 22:45:01 +0900 | [diff] [blame] | 339 | int err; |
| 340 | |
| 341 | err = snd_efw_transaction_register(); |
| 342 | if (err < 0) |
| 343 | goto end; |
| 344 | |
| 345 | err = driver_register(&efw_driver.driver); |
| 346 | if (err < 0) |
| 347 | snd_efw_transaction_unregister(); |
| 348 | |
| 349 | end: |
| 350 | return err; |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 351 | } |
| 352 | |
| 353 | static void __exit snd_efw_exit(void) |
| 354 | { |
Takashi Sakamoto | bde8a8f | 2014-04-25 22:45:01 +0900 | [diff] [blame] | 355 | snd_efw_transaction_unregister(); |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 356 | driver_unregister(&efw_driver.driver); |
Takashi Sakamoto | b5b0433 | 2014-04-25 22:45:00 +0900 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | module_init(snd_efw_init); |
| 360 | module_exit(snd_efw_exit); |