1 files changed, 466 insertions, 0 deletions

diff --git a/sound/usb/usx2y/usbusx2y.c b/sound/usb/usx2y/usbusx2y.c
new file mode 100644
index 000000000..52f4e6652
--- /dev/null
+++ b/sound/usb/usx2y/usbusx2y.c
@@ -0,0 +1,466 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * usbusx2y.c - ALSA USB US-428 Driver
+ *
+2005-04-14 Karsten Wiese
+	Version 0.8.7.2:
+	Call snd_card_free() instead of snd_card_free_in_thread() to prevent oops with dead keyboard symptom.
+	Tested ok with kernel 2.6.12-rc2.
+
+2004-12-14 Karsten Wiese
+	Version 0.8.7.1:
+	snd_pcm_open for rawusb pcm-devices now returns -EBUSY if called without rawusb's hwdep device being open.
+
+2004-12-02 Karsten Wiese
+	Version 0.8.7:
+	Use macro usb_maxpacket() for portability.
+
+2004-10-26 Karsten Wiese
+	Version 0.8.6:
+	wake_up() process waiting in usx2y_urbs_start() on error.
+
+2004-10-21 Karsten Wiese
+	Version 0.8.5:
+	nrpacks is runtime or compiletime configurable now with tested values from 1 to 4.
+
+2004-10-03 Karsten Wiese
+	Version 0.8.2:
+	Avoid any possible racing while in prepare callback.
+
+2004-09-30 Karsten Wiese
+	Version 0.8.0:
+	Simplified things and made ohci work again.
+
+2004-09-20 Karsten Wiese
+	Version 0.7.3:
+	Use usb_kill_urb() instead of deprecated (kernel 2.6.9) usb_unlink_urb().
+
+2004-07-13 Karsten Wiese
+	Version 0.7.1:
+	Don't sleep in START/STOP callbacks anymore.
+	us428 channels C/D not handled just for this version, sorry.
+
+2004-06-21 Karsten Wiese
+	Version 0.6.4:
+	Temporarely suspend midi input
+	to sanely call usb_set_interface() when setting format.
+
+2004-06-12 Karsten Wiese
+	Version 0.6.3:
+	Made it thus the following rule is enforced:
+	"All pcm substreams of one usx2y have to operate at the same rate & format."
+
+2004-04-06 Karsten Wiese
+	Version 0.6.0:
+	Runs on 2.6.5 kernel without any "--with-debug=" things.
+	us224 reported running.
+
+2004-01-14 Karsten Wiese
+	Version 0.5.1:
+	Runs with 2.6.1 kernel.
+
+2003-12-30 Karsten Wiese
+	Version 0.4.1:
+	Fix 24Bit 4Channel capturing for the us428.
+
+2003-11-27 Karsten Wiese, Martin Langer
+	Version 0.4:
+	us122 support.
+	us224 could be tested by uncommenting the sections containing USB_ID_US224
+
+2003-11-03 Karsten Wiese
+	Version 0.3:
+	24Bit support.
+	"arecord -D hw:1 -c 2 -r 48000 -M -f S24_3LE|aplay -D hw:1 -c 2 -r 48000 -M -f S24_3LE" works.
+
+2003-08-22 Karsten Wiese
+	Version 0.0.8:
+	Removed EZUSB Firmware. First Stage Firmwaredownload is now done by tascam-firmware downloader.
+	See:
+	http://usb-midi-fw.sourceforge.net/tascam-firmware.tar.gz
+
+2003-06-18 Karsten Wiese
+	Version 0.0.5:
+	changed to compile with kernel 2.4.21 and alsa 0.9.4
+
+2002-10-16 Karsten Wiese
+	Version 0.0.4:
+	compiles again with alsa-current.
+	USB_ISO_ASAP not used anymore (most of the time), instead
+	urb->start_frame is calculated here now, some calls inside usb-driver don't need to happen anymore.
+
+	To get the best out of this:
+	Disable APM-support in the kernel as APM-BIOS calls (once each second) hard disable interrupt for many precious milliseconds.
+	This helped me much on my slowish PII 400 & PIII 500.
+	ACPI yet untested but might cause the same bad behaviour.
+	Use a kernel with lowlatency and preemptiv patches applied.
+	To autoload snd-usb-midi append a line
+		post-install snd-usb-us428 modprobe snd-usb-midi
+	to /etc/modules.conf.
+
+	known problems:
+	sliders, knobs, lights not yet handled except MASTER Volume slider.
+	"pcm -c 2" doesn't work. "pcm -c 2 -m direct_interleaved" does.
+	KDE3: "Enable full duplex operation" deadlocks.
+
+2002-08-31 Karsten Wiese
+	Version 0.0.3: audio also simplex;
+	simplifying: iso urbs only 1 packet, melted structs.
+	ASYNC_UNLINK not used anymore: no more crashes so far.....
+	for alsa 0.9 rc3.
+
+2002-08-09 Karsten Wiese
+	Version 0.0.2: midi works with snd-usb-midi, audio (only fullduplex now) with i.e. bristol.
+	The firmware has been sniffed from win2k us-428 driver 3.09.
+
+ *   Copyright (c) 2002 - 2004 Karsten Wiese
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/usb.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+
+#include <sound/rawmidi.h>
+#include "usx2y.h"
+#include "usbusx2y.h"
+#include "usX2Yhwdep.h"
+
+MODULE_AUTHOR("Karsten Wiese <annabellesgarden@yahoo.de>");
+MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.8.7.2");
+MODULE_LICENSE("GPL");
+
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
+static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
+
+static int snd_usx2y_card_used[SNDRV_CARDS];
+
+static void snd_usx2y_card_private_free(struct snd_card *card);
+static void usx2y_unlinkseq(struct snd_usx2y_async_seq *s);
+
+/*
+ * pipe 4 is used for switching the lamps, setting samplerate, volumes ....
+ */
+static void i_usx2y_out04_int(struct urb *urb)
+{
+#ifdef CONFIG_SND_DEBUG
+	if (urb->status) {
+		int i;
+		struct usx2ydev *usx2y = urb->context;
+
+		for (i = 0; i < 10 && usx2y->as04.urb[i] != urb; i++)
+			;
+		snd_printdd("%s urb %i status=%i\n", __func__, i, urb->status);
+	}
+#endif
+}
+
+static void i_usx2y_in04_int(struct urb *urb)
+{
+	int			err = 0;
+	struct usx2ydev		*usx2y = urb->context;
+	struct us428ctls_sharedmem	*us428ctls = usx2y->us428ctls_sharedmem;
+	struct us428_p4out *p4out;
+	int i, j, n, diff, send;
+
+	usx2y->in04_int_calls++;
+
+	if (urb->status) {
+		snd_printdd("Interrupt Pipe 4 came back with status=%i\n", urb->status);
+		return;
+	}
+
+	//	printk("%i:0x%02X ", 8, (int)((unsigned char*)usx2y->in04_buf)[8]); Master volume shows 0 here if fader is at max during boot ?!?
+	if (us428ctls) {
+		diff = -1;
+		if (us428ctls->ctl_snapshot_last == -2) {
+			diff = 0;
+			memcpy(usx2y->in04_last, usx2y->in04_buf, sizeof(usx2y->in04_last));
+			us428ctls->ctl_snapshot_last = -1;
+		} else {
+			for (i = 0; i < 21; i++) {
+				if (usx2y->in04_last[i] != ((char *)usx2y->in04_buf)[i]) {
+					if (diff < 0)
+						diff = i;
+					usx2y->in04_last[i] = ((char *)usx2y->in04_buf)[i];
+				}
+			}
+		}
+		if (diff >= 0) {
+			n = us428ctls->ctl_snapshot_last + 1;
+			if (n >= N_US428_CTL_BUFS || n < 0)
+				n = 0;
+			memcpy(us428ctls->ctl_snapshot + n, usx2y->in04_buf, sizeof(us428ctls->ctl_snapshot[0]));
+			us428ctls->ctl_snapshot_differs_at[n] = diff;
+			us428ctls->ctl_snapshot_last = n;
+			wake_up(&usx2y->us428ctls_wait_queue_head);
+		}
+	}
+
+	if (usx2y->us04) {
+		if (!usx2y->us04->submitted) {
+			do {
+				err = usb_submit_urb(usx2y->us04->urb[usx2y->us04->submitted++], GFP_ATOMIC);
+			} while (!err && usx2y->us04->submitted < usx2y->us04->len);
+		}
+	} else {
+		if (us428ctls && us428ctls->p4out_last >= 0 && us428ctls->p4out_last < N_US428_P4OUT_BUFS) {
+			if (us428ctls->p4out_last != us428ctls->p4out_sent) {
+				send = us428ctls->p4out_sent + 1;
+				if (send >= N_US428_P4OUT_BUFS)
+					send = 0;
+				for (j = 0; j < URBS_ASYNC_SEQ && !err; ++j) {
+					if (!usx2y->as04.urb[j]->status) {
+						p4out = us428ctls->p4out + send;	// FIXME if more than 1 p4out is new, 1 gets lost.
+						usb_fill_bulk_urb(usx2y->as04.urb[j], usx2y->dev,
+								  usb_sndbulkpipe(usx2y->dev, 0x04), &p4out->val.vol,
+								  p4out->type == ELT_LIGHT ? sizeof(struct us428_lights) : 5,
+								  i_usx2y_out04_int, usx2y);
+						err = usb_submit_urb(usx2y->as04.urb[j], GFP_ATOMIC);
+						us428ctls->p4out_sent = send;
+						break;
+					}
+				}
+			}
+		}
+	}
+
+	if (err)
+		snd_printk(KERN_ERR "in04_int() usb_submit_urb err=%i\n", err);
+
+	urb->dev = usx2y->dev;
+	usb_submit_urb(urb, GFP_ATOMIC);
+}
+
+/*
+ * Prepare some urbs
+ */
+int usx2y_async_seq04_init(struct usx2ydev *usx2y)
+{
+	int	err = 0, i;
+
+	if (WARN_ON(usx2y->as04.buffer))
+		return -EBUSY;
+
+	usx2y->as04.buffer = kmalloc_array(URBS_ASYNC_SEQ,
+					   URB_DATA_LEN_ASYNC_SEQ, GFP_KERNEL);
+	if (!usx2y->as04.buffer) {
+		err = -ENOMEM;
+	} else {
+		for (i = 0; i < URBS_ASYNC_SEQ; ++i) {
+			usx2y->as04.urb[i] = usb_alloc_urb(0, GFP_KERNEL);
+			if (!usx2y->as04.urb[i]) {
+				err = -ENOMEM;
+				break;
+			}
+			usb_fill_bulk_urb(usx2y->as04.urb[i], usx2y->dev,
+					  usb_sndbulkpipe(usx2y->dev, 0x04),
+					  usx2y->as04.buffer + URB_DATA_LEN_ASYNC_SEQ * i, 0,
+					  i_usx2y_out04_int, usx2y);
+			err = usb_urb_ep_type_check(usx2y->as04.urb[i]);
+			if (err < 0)
+				break;
+		}
+	}
+	if (err)
+		usx2y_unlinkseq(&usx2y->as04);
+	return err;
+}
+
+int usx2y_in04_init(struct usx2ydev *usx2y)
+{
+	int err;
+
+	if (WARN_ON(usx2y->in04_urb))
+		return -EBUSY;
+
+	usx2y->in04_urb = usb_alloc_urb(0, GFP_KERNEL);
+	if (!usx2y->in04_urb) {
+		err = -ENOMEM;
+		goto error;
+	}
+
+	usx2y->in04_buf = kmalloc(21, GFP_KERNEL);
+	if (!usx2y->in04_buf) {
+		err = -ENOMEM;
+		goto error;
+	}
+
+	init_waitqueue_head(&usx2y->in04_wait_queue);
+	usb_fill_int_urb(usx2y->in04_urb, usx2y->dev, usb_rcvintpipe(usx2y->dev, 0x4),
+			 usx2y->in04_buf, 21,
+			 i_usx2y_in04_int, usx2y,
+			 10);
+	if (usb_urb_ep_type_check(usx2y->in04_urb)) {
+		err = -EINVAL;
+		goto error;
+	}
+	return usb_submit_urb(usx2y->in04_urb, GFP_KERNEL);
+
+ error:
+	kfree(usx2y->in04_buf);
+	usb_free_urb(usx2y->in04_urb);
+	usx2y->in04_buf = NULL;
+	usx2y->in04_urb = NULL;
+	return err;
+}
+
+static void usx2y_unlinkseq(struct snd_usx2y_async_seq *s)
+{
+	int	i;
+
+	for (i = 0; i < URBS_ASYNC_SEQ; ++i) {
+		if (!s->urb[i])
+			continue;
+		usb_kill_urb(s->urb[i]);
+		usb_free_urb(s->urb[i]);
+		s->urb[i] = NULL;
+	}
+	kfree(s->buffer);
+	s->buffer = NULL;
+}
+
+static const struct usb_device_id snd_usx2y_usb_id_table[] = {
+	{
+		.match_flags =	USB_DEVICE_ID_MATCH_DEVICE,
+		.idVendor =	0x1604,
+		.idProduct =	USB_ID_US428
+	},
+	{
+		.match_flags =	USB_DEVICE_ID_MATCH_DEVICE,
+		.idVendor =	0x1604,
+		.idProduct =	USB_ID_US122
+	},
+	{
+		.match_flags =	USB_DEVICE_ID_MATCH_DEVICE,
+		.idVendor =	0x1604,
+		.idProduct =	USB_ID_US224
+	},
+	{ /* terminator */ }
+};
+MODULE_DEVICE_TABLE(usb, snd_usx2y_usb_id_table);
+
+static int usx2y_create_card(struct usb_device *device,
+			     struct usb_interface *intf,
+			     struct snd_card **cardp)
+{
+	int		dev;
+	struct snd_card *card;
+	int err;
+
+	for (dev = 0; dev < SNDRV_CARDS; ++dev)
+		if (enable[dev] && !snd_usx2y_card_used[dev])
+			break;
+	if (dev >= SNDRV_CARDS)
+		return -ENODEV;
+	err = snd_card_new(&intf->dev, index[dev], id[dev], THIS_MODULE,
+			   sizeof(struct usx2ydev), &card);
+	if (err < 0)
+		return err;
+	snd_usx2y_card_used[usx2y(card)->card_index = dev] = 1;
+	card->private_free = snd_usx2y_card_private_free;
+	usx2y(card)->dev = device;
+	init_waitqueue_head(&usx2y(card)->prepare_wait_queue);
+	init_waitqueue_head(&usx2y(card)->us428ctls_wait_queue_head);
+	mutex_init(&usx2y(card)->pcm_mutex);
+	INIT_LIST_HEAD(&usx2y(card)->midi_list);
+	strcpy(card->driver, "USB "NAME_ALLCAPS"");
+	sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
+	sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
+		card->shortname,
+		le16_to_cpu(device->descriptor.idVendor),
+		le16_to_cpu(device->descriptor.idProduct),
+		0,//us428(card)->usbmidi.ifnum,
+		usx2y(card)->dev->bus->busnum, usx2y(card)->dev->devnum);
+	*cardp = card;
+	return 0;
+}
+
+static void snd_usx2y_card_private_free(struct snd_card *card)
+{
+	struct usx2ydev *usx2y = usx2y(card);
+
+	kfree(usx2y->in04_buf);
+	usb_free_urb(usx2y->in04_urb);
+	if (usx2y->us428ctls_sharedmem)
+		free_pages_exact(usx2y->us428ctls_sharedmem,
+				 US428_SHAREDMEM_PAGES);
+	if (usx2y->card_index >= 0 && usx2y->card_index < SNDRV_CARDS)
+		snd_usx2y_card_used[usx2y->card_index] = 0;
+}
+
+static void snd_usx2y_disconnect(struct usb_interface *intf)
+{
+	struct snd_card *card;
+	struct usx2ydev *usx2y;
+	struct list_head *p;
+
+	card = usb_get_intfdata(intf);
+	if (!card)
+		return;
+	usx2y = usx2y(card);
+	usx2y->chip_status = USX2Y_STAT_CHIP_HUP;
+	usx2y_unlinkseq(&usx2y->as04);
+	usb_kill_urb(usx2y->in04_urb);
+	snd_card_disconnect(card);
+
+	/* release the midi resources */
+	list_for_each(p, &usx2y->midi_list) {
+		snd_usbmidi_disconnect(p);
+	}
+	if (usx2y->us428ctls_sharedmem)
+		wake_up(&usx2y->us428ctls_wait_queue_head);
+	snd_card_free(card);
+}
+
+static int snd_usx2y_probe(struct usb_interface *intf,
+			   const struct usb_device_id *id)
+{
+	struct usb_device *device = interface_to_usbdev(intf);
+	struct snd_card *card;
+	int err;
+
+	if (le16_to_cpu(device->descriptor.idVendor) != 0x1604 ||
+	    (le16_to_cpu(device->descriptor.idProduct) != USB_ID_US122 &&
+	     le16_to_cpu(device->descriptor.idProduct) != USB_ID_US224 &&
+	     le16_to_cpu(device->descriptor.idProduct) != USB_ID_US428))
+		return -EINVAL;
+
+	err = usx2y_create_card(device, intf, &card);
+	if (err < 0)
+		return err;
+	err = usx2y_hwdep_new(card, device);
+	if (err < 0)
+		goto error;
+	err = snd_card_register(card);
+	if (err < 0)
+		goto error;
+
+	dev_set_drvdata(&intf->dev, card);
+	return 0;
+
+ error:
+	snd_card_free(card);
+	return err;
+}
+
+static struct usb_driver snd_usx2y_usb_driver = {
+	.name =		"snd-usb-usx2y",
+	.probe =	snd_usx2y_probe,
+	.disconnect =	snd_usx2y_disconnect,
+	.id_table =	snd_usx2y_usb_id_table,
+};
+module_usb_driver(snd_usx2y_usb_driver);