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https://github.com/edk2-porting/linux-next.git
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6c3cef4890
This commit adds an new driver for MOTU FireWire series. In this commit, this driver just creates/removes card instance according to bus event. More functionalities will be added in following commits. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Signed-off-by: Takashi Iwai <tiwai@suse.de>
135 lines
2.8 KiB
C
135 lines
2.8 KiB
C
/*
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* motu.c - a part of driver for MOTU FireWire series
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*
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* Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
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*
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* Licensed under the terms of the GNU General Public License, version 2.
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*/
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#include "motu.h"
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#define OUI_MOTU 0x0001f2
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MODULE_DESCRIPTION("MOTU FireWire driver");
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MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
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MODULE_LICENSE("GPL v2");
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static void name_card(struct snd_motu *motu)
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{
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struct fw_device *fw_dev = fw_parent_device(motu->unit);
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struct fw_csr_iterator it;
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int key, val;
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u32 version = 0;
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fw_csr_iterator_init(&it, motu->unit->directory);
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while (fw_csr_iterator_next(&it, &key, &val)) {
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switch (key) {
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case CSR_VERSION:
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version = val;
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break;
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}
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}
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strcpy(motu->card->driver, "FW-MOTU");
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snprintf(motu->card->longname, sizeof(motu->card->longname),
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"MOTU (version:%d), GUID %08x%08x at %s, S%d",
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version,
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fw_dev->config_rom[3], fw_dev->config_rom[4],
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dev_name(&motu->unit->device), 100 << fw_dev->max_speed);
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}
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static void motu_card_free(struct snd_card *card)
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{
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struct snd_motu *motu = card->private_data;
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fw_unit_put(motu->unit);
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mutex_destroy(&motu->mutex);
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}
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static int motu_probe(struct fw_unit *unit,
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const struct ieee1394_device_id *entry)
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{
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struct snd_card *card;
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struct snd_motu *motu;
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int err;
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err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE,
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sizeof(*motu), &card);
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if (err < 0)
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return err;
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motu = card->private_data;
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motu->card = card;
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motu->unit = fw_unit_get(unit);
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card->private_free = motu_card_free;
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mutex_init(&motu->mutex);
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name_card(motu);
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err = snd_card_register(card);
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if (err < 0)
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goto error;
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dev_set_drvdata(&unit->device, motu);
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return 0;
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error:
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snd_card_free(card);
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return err;
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}
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static void motu_remove(struct fw_unit *unit)
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{
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struct snd_motu *motu = dev_get_drvdata(&unit->device);
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/* No need to wait for releasing card object in this context. */
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snd_card_free_when_closed(motu->card);
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}
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static void motu_bus_update(struct fw_unit *unit)
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{
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return;
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}
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#define SND_MOTU_DEV_ENTRY(model) \
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{ \
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.match_flags = IEEE1394_MATCH_VENDOR_ID | \
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IEEE1394_MATCH_MODEL_ID | \
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IEEE1394_MATCH_SPECIFIER_ID, \
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.vendor_id = OUI_MOTU, \
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.model_id = model, \
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.specifier_id = OUI_MOTU, \
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}
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static const struct ieee1394_device_id motu_id_table[] = {
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{ }
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};
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MODULE_DEVICE_TABLE(ieee1394, motu_id_table);
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static struct fw_driver motu_driver = {
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.driver = {
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.owner = THIS_MODULE,
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.name = KBUILD_MODNAME,
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.bus = &fw_bus_type,
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},
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.probe = motu_probe,
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.update = motu_bus_update,
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.remove = motu_remove,
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.id_table = motu_id_table,
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};
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static int __init alsa_motu_init(void)
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{
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return driver_register(&motu_driver.driver);
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}
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static void __exit alsa_motu_exit(void)
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{
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driver_unregister(&motu_driver.driver);
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}
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module_init(alsa_motu_init);
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module_exit(alsa_motu_exit);
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