[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/firewire/motu/motu.c b/src/kernel/linux/v4.14/sound/firewire/motu/motu.c
new file mode 100644
index 0000000..0d6b526
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/firewire/motu/motu.c
@@ -0,0 +1,283 @@
+/*
+ * motu.c - a part of driver for MOTU FireWire series
+ *
+ * Copyright (c) 2015-2017 Takashi Sakamoto <o-takashi@sakamocchi.jp>
+ *
+ * Licensed under the terms of the GNU General Public License, version 2.
+ */
+
+#include "motu.h"
+
+#define OUI_MOTU 0x0001f2
+
+MODULE_DESCRIPTION("MOTU FireWire driver");
+MODULE_AUTHOR("Takashi Sakamoto <o-takashi@sakamocchi.jp>");
+MODULE_LICENSE("GPL v2");
+
+const unsigned int snd_motu_clock_rates[SND_MOTU_CLOCK_RATE_COUNT] = {
+ /* mode 0 */
+ [0] = 44100,
+ [1] = 48000,
+ /* mode 1 */
+ [2] = 88200,
+ [3] = 96000,
+ /* mode 2 */
+ [4] = 176400,
+ [5] = 192000,
+};
+
+static void name_card(struct snd_motu *motu)
+{
+ struct fw_device *fw_dev = fw_parent_device(motu->unit);
+ struct fw_csr_iterator it;
+ int key, val;
+ u32 version = 0;
+
+ fw_csr_iterator_init(&it, motu->unit->directory);
+ while (fw_csr_iterator_next(&it, &key, &val)) {
+ switch (key) {
+ case CSR_VERSION:
+ version = val;
+ break;
+ }
+ }
+
+ strcpy(motu->card->driver, "FW-MOTU");
+ strcpy(motu->card->shortname, motu->spec->name);
+ strcpy(motu->card->mixername, motu->spec->name);
+ snprintf(motu->card->longname, sizeof(motu->card->longname),
+ "MOTU %s (version:%d), GUID %08x%08x at %s, S%d",
+ motu->spec->name, version,
+ fw_dev->config_rom[3], fw_dev->config_rom[4],
+ dev_name(&motu->unit->device), 100 << fw_dev->max_speed);
+}
+
+static void motu_free(struct snd_motu *motu)
+{
+ snd_motu_transaction_unregister(motu);
+
+ snd_motu_stream_destroy_duplex(motu);
+ fw_unit_put(motu->unit);
+
+ mutex_destroy(&motu->mutex);
+ kfree(motu);
+}
+
+/*
+ * This module releases the FireWire unit data after all ALSA character devices
+ * are released by applications. This is for releasing stream data or finishing
+ * transactions safely. Thus at returning from .remove(), this module still keep
+ * references for the unit.
+ */
+static void motu_card_free(struct snd_card *card)
+{
+ motu_free(card->private_data);
+}
+
+static void do_registration(struct work_struct *work)
+{
+ struct snd_motu *motu = container_of(work, struct snd_motu, dwork.work);
+ int err;
+
+ if (motu->registered)
+ return;
+
+ err = snd_card_new(&motu->unit->device, -1, NULL, THIS_MODULE, 0,
+ &motu->card);
+ if (err < 0)
+ return;
+
+ name_card(motu);
+
+ err = snd_motu_transaction_register(motu);
+ if (err < 0)
+ goto error;
+
+ err = snd_motu_stream_init_duplex(motu);
+ if (err < 0)
+ goto error;
+
+ snd_motu_proc_init(motu);
+
+ err = snd_motu_create_pcm_devices(motu);
+ if (err < 0)
+ goto error;
+
+ if ((motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_2ND_Q) ||
+ (motu->spec->flags & SND_MOTU_SPEC_RX_MIDI_3RD_Q) ||
+ (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_2ND_Q) ||
+ (motu->spec->flags & SND_MOTU_SPEC_TX_MIDI_3RD_Q)) {
+ err = snd_motu_create_midi_devices(motu);
+ if (err < 0)
+ goto error;
+ }
+
+ err = snd_motu_create_hwdep_device(motu);
+ if (err < 0)
+ goto error;
+
+ err = snd_card_register(motu->card);
+ if (err < 0)
+ goto error;
+
+ /*
+ * After registered, motu instance can be released corresponding to
+ * releasing the sound card instance.
+ */
+ motu->card->private_free = motu_card_free;
+ motu->card->private_data = motu;
+ motu->registered = true;
+
+ return;
+error:
+ snd_motu_transaction_unregister(motu);
+ snd_motu_stream_destroy_duplex(motu);
+ snd_card_free(motu->card);
+ dev_info(&motu->unit->device,
+ "Sound card registration failed: %d\n", err);
+}
+
+static int motu_probe(struct fw_unit *unit,
+ const struct ieee1394_device_id *entry)
+{
+ struct snd_motu *motu;
+
+ /* Allocate this independently of sound card instance. */
+ motu = kzalloc(sizeof(struct snd_motu), GFP_KERNEL);
+ if (motu == NULL)
+ return -ENOMEM;
+
+ motu->spec = (const struct snd_motu_spec *)entry->driver_data;
+ motu->unit = fw_unit_get(unit);
+ dev_set_drvdata(&unit->device, motu);
+
+ mutex_init(&motu->mutex);
+ spin_lock_init(&motu->lock);
+ init_waitqueue_head(&motu->hwdep_wait);
+
+ /* Allocate and register this sound card later. */
+ INIT_DEFERRABLE_WORK(&motu->dwork, do_registration);
+ snd_fw_schedule_registration(unit, &motu->dwork);
+
+ return 0;
+}
+
+static void motu_remove(struct fw_unit *unit)
+{
+ struct snd_motu *motu = dev_get_drvdata(&unit->device);
+
+ /*
+ * Confirm to stop the work for registration before the sound card is
+ * going to be released. The work is not scheduled again because bus
+ * reset handler is not called anymore.
+ */
+ cancel_delayed_work_sync(&motu->dwork);
+
+ if (motu->registered) {
+ /* No need to wait for releasing card object in this context. */
+ snd_card_free_when_closed(motu->card);
+ } else {
+ /* Don't forget this case. */
+ motu_free(motu);
+ }
+}
+
+static void motu_bus_update(struct fw_unit *unit)
+{
+ struct snd_motu *motu = dev_get_drvdata(&unit->device);
+
+ /* Postpone a workqueue for deferred registration. */
+ if (!motu->registered)
+ snd_fw_schedule_registration(unit, &motu->dwork);
+
+ /* The handler address register becomes initialized. */
+ snd_motu_transaction_reregister(motu);
+}
+
+static const struct snd_motu_spec motu_828mk2 = {
+ .name = "828mk2",
+ .protocol = &snd_motu_protocol_v2,
+ .flags = SND_MOTU_SPEC_SUPPORT_CLOCK_X2 |
+ SND_MOTU_SPEC_TX_MICINST_CHUNK |
+ SND_MOTU_SPEC_TX_RETURN_CHUNK |
+ SND_MOTU_SPEC_HAS_OPT_IFACE_A |
+ SND_MOTU_SPEC_RX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_TX_MIDI_2ND_Q,
+
+ .analog_in_ports = 8,
+ .analog_out_ports = 8,
+};
+
+static const struct snd_motu_spec motu_828mk3 = {
+ .name = "828mk3",
+ .protocol = &snd_motu_protocol_v3,
+ .flags = SND_MOTU_SPEC_SUPPORT_CLOCK_X2 |
+ SND_MOTU_SPEC_SUPPORT_CLOCK_X4 |
+ SND_MOTU_SPEC_TX_MICINST_CHUNK |
+ SND_MOTU_SPEC_TX_RETURN_CHUNK |
+ SND_MOTU_SPEC_TX_REVERB_CHUNK |
+ SND_MOTU_SPEC_HAS_OPT_IFACE_A |
+ SND_MOTU_SPEC_HAS_OPT_IFACE_B |
+ SND_MOTU_SPEC_RX_MIDI_3RD_Q |
+ SND_MOTU_SPEC_TX_MIDI_3RD_Q,
+
+ .analog_in_ports = 8,
+ .analog_out_ports = 8,
+};
+
+static const struct snd_motu_spec motu_audio_express = {
+ .name = "AudioExpress",
+ .protocol = &snd_motu_protocol_v3,
+ .flags = SND_MOTU_SPEC_SUPPORT_CLOCK_X2 |
+ SND_MOTU_SPEC_TX_MICINST_CHUNK |
+ SND_MOTU_SPEC_TX_RETURN_CHUNK |
+ SND_MOTU_SPEC_RX_MIDI_2ND_Q |
+ SND_MOTU_SPEC_TX_MIDI_3RD_Q,
+ .analog_in_ports = 2,
+ .analog_out_ports = 4,
+};
+
+#define SND_MOTU_DEV_ENTRY(model, data) \
+{ \
+ .match_flags = IEEE1394_MATCH_VENDOR_ID | \
+ IEEE1394_MATCH_MODEL_ID | \
+ IEEE1394_MATCH_SPECIFIER_ID, \
+ .vendor_id = OUI_MOTU, \
+ .model_id = model, \
+ .specifier_id = OUI_MOTU, \
+ .driver_data = (kernel_ulong_t)data, \
+}
+
+static const struct ieee1394_device_id motu_id_table[] = {
+ SND_MOTU_DEV_ENTRY(0x101800, &motu_828mk2),
+ SND_MOTU_DEV_ENTRY(0x106800, &motu_828mk3), /* FireWire only. */
+ SND_MOTU_DEV_ENTRY(0x100800, &motu_828mk3), /* Hybrid. */
+ SND_MOTU_DEV_ENTRY(0x104800, &motu_audio_express),
+ { }
+};
+MODULE_DEVICE_TABLE(ieee1394, motu_id_table);
+
+static struct fw_driver motu_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = KBUILD_MODNAME,
+ .bus = &fw_bus_type,
+ },
+ .probe = motu_probe,
+ .update = motu_bus_update,
+ .remove = motu_remove,
+ .id_table = motu_id_table,
+};
+
+static int __init alsa_motu_init(void)
+{
+ return driver_register(&motu_driver.driver);
+}
+
+static void __exit alsa_motu_exit(void)
+{
+ driver_unregister(&motu_driver.driver);
+}
+
+module_init(alsa_motu_init);
+module_exit(alsa_motu_exit);