Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * motu.c - a part of driver for MOTU FireWire series
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include "motu.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #define OUI_MOTU	0x0001f2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) MODULE_DESCRIPTION("MOTU FireWire driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 	/* mode 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 	[0] =  44100,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	[1] =  48000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	/* mode 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	[2] =  88200,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	[3] =  96000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	/* mode 2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	[4] = 176400,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 	[5] = 192000,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) static void name_card(struct snd_motu *motu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	struct fw_device *fw_dev = fw_parent_device(motu->unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	struct fw_csr_iterator it;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	int key, val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	u32 version = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	fw_csr_iterator_init(&it, motu->unit->directory);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	while (fw_csr_iterator_next(&it, &key, &val)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 		switch (key) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 		case CSR_MODEL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 			version = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 	strcpy(motu->card->driver, "FW-MOTU");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	strcpy(motu->card->shortname, motu->spec->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	strcpy(motu->card->mixername, motu->spec->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 	snprintf(motu->card->longname, sizeof(motu->card->longname),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 		 "MOTU %s (version:%06x), GUID %08x%08x at %s, S%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		 motu->spec->name, version,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		 fw_dev->config_rom[3], fw_dev->config_rom[4],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 		 dev_name(&motu->unit->device), 100 << fw_dev->max_speed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) static void motu_card_free(struct snd_card *card)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	struct snd_motu *motu = card->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	snd_motu_transaction_unregister(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	snd_motu_stream_destroy_duplex(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) static void do_registration(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	struct snd_motu *motu = container_of(work, struct snd_motu, dwork.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	if (motu->registered)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	err = snd_card_new(&motu->unit->device, -1, NULL, THIS_MODULE, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 			   &motu->card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	motu->card->private_free = motu_card_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	motu->card->private_data = motu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	name_card(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	err = snd_motu_transaction_register(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	err = snd_motu_stream_init_duplex(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	snd_motu_proc_init(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	err = snd_motu_create_pcm_devices(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	if ((motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_2ND_Q) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	    (motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_3RD_Q) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	    (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_2ND_Q) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	    (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_3RD_Q)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 		err = snd_motu_create_midi_devices(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 			goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	err = snd_motu_create_hwdep_device(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	err = snd_card_register(motu->card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	if (err < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 		goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	motu->registered = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 	snd_card_free(motu->card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	dev_info(&motu->unit->device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 		 "Sound card registration failed: %d\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) static int motu_probe(struct fw_unit *unit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 		      const struct ieee1394_device_id *entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	struct snd_motu *motu;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	/* Allocate this independently of sound card instance. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	motu = devm_kzalloc(&unit->device, sizeof(struct snd_motu), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	if (!motu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	motu->unit = fw_unit_get(unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	dev_set_drvdata(&unit->device, motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	motu->spec = (const struct snd_motu_spec *)entry->driver_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	mutex_init(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	spin_lock_init(&motu->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	init_waitqueue_head(&motu->hwdep_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	/* Allocate and register this sound card later. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	INIT_DEFERRABLE_WORK(&motu->dwork, do_registration);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	snd_fw_schedule_registration(unit, &motu->dwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) static void motu_remove(struct fw_unit *unit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	struct snd_motu *motu = dev_get_drvdata(&unit->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	 * Confirm to stop the work for registration before the sound card is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	 * going to be released. The work is not scheduled again because bus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	 * reset handler is not called anymore.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	cancel_delayed_work_sync(&motu->dwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	if (motu->registered) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		// Block till all of ALSA character devices are released.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		snd_card_free(motu->card);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	mutex_destroy(&motu->mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	fw_unit_put(motu->unit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) static void motu_bus_update(struct fw_unit *unit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	struct snd_motu *motu = dev_get_drvdata(&unit->device);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	/* Postpone a workqueue for deferred registration. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	if (!motu->registered)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 		snd_fw_schedule_registration(unit, &motu->dwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	/* The handler address register becomes initialized. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	snd_motu_transaction_reregister(motu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) #define SND_MOTU_DEV_ENTRY(model, data)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {							\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	.match_flags	= IEEE1394_MATCH_VENDOR_ID |	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 			  IEEE1394_MATCH_SPECIFIER_ID |	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 			  IEEE1394_MATCH_VERSION,	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	.vendor_id	= OUI_MOTU,			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	.specifier_id	= OUI_MOTU,			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	.version	= model,			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	.driver_data	= (kernel_ulong_t)data,		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) static const struct ieee1394_device_id motu_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	SND_MOTU_DEV_ENTRY(0x000003, &snd_motu_spec_828mk2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	SND_MOTU_DEV_ENTRY(0x000009, &snd_motu_spec_traveler),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	SND_MOTU_DEV_ENTRY(0x00000d, &snd_motu_spec_ultralite),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	SND_MOTU_DEV_ENTRY(0x00000f, &snd_motu_spec_8pre),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	SND_MOTU_DEV_ENTRY(0x000015, &snd_motu_spec_828mk3), // FireWire only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	SND_MOTU_DEV_ENTRY(0x000019, &snd_motu_spec_ultralite_mk3), // FireWire only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	SND_MOTU_DEV_ENTRY(0x000035, &snd_motu_spec_828mk3), // Hybrid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	SND_MOTU_DEV_ENTRY(0x000033, &snd_motu_spec_audio_express),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	SND_MOTU_DEV_ENTRY(0x000045, &snd_motu_spec_4pre),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) MODULE_DEVICE_TABLE(ieee1394, motu_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) static struct fw_driver motu_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	.driver   = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 		.owner	= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		.name	= KBUILD_MODNAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		.bus	= &fw_bus_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	.probe    = motu_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	.update   = motu_bus_update,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	.remove   = motu_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	.id_table = motu_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) static int __init alsa_motu_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	return driver_register(&motu_driver.driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) static void __exit alsa_motu_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	driver_unregister(&motu_driver.driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) module_init(alsa_motu_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) module_exit(alsa_motu_exit);