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linux/linux-5.18.11/sound/usb/usx2y/usbusx2y.c

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// 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);
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