/* * usbusy2y.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_US2242003-11-03 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.gz2003-06-18 Karsten Wiese	Version 0.0.5:	changed to compile with kernel 2.4.21 and alsa 0.9.42002-10-16 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 * *   This program is free software; you can redistribute it and/or modify *   it under the terms of the GNU General Public License as published by *   the Free Software Foundation; either version 2 of the License, or *   (at your option) any later version. * *   This program is distributed in the hope that it will be useful, *   but WITHOUT ANY WARRANTY; without even the implied warranty of *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the *   GNU General Public License for more details. * *   You should have received a copy of the GNU General Public License *   along with this program; if not, write to the Free Software *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA*/#include <sound/driver.h>#include <linux/init.h>#include <linux/module.h>#include <linux/moduleparam.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");MODULE_SUPPORTED_DEVICE("{{TASCAM(0x1604), "NAME_ALLCAPS"(0x8001)(0x8005)(0x8007) }}");static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */static int 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 usX2Y_usb_disconnect(struct usb_device* usb_device, void* ptr);static void snd_usX2Y_card_private_free(snd_card_t *card);/*  * pipe 4 is used for switching the lamps, setting samplerate, volumes ....    */static void i_usX2Y_Out04Int(struct urb* urb, struct pt_regs *regs){#ifdef CONFIG_SND_DEBUG	if (urb->status) {		int 		i;		usX2Ydev_t*	usX2Y = urb->context;		for (i = 0; i < 10 && usX2Y->AS04.urb[i] != urb; i++);		snd_printdd("i_usX2Y_Out04Int() urb %i status=%i\n", i, urb->status);	}#endif}static void i_usX2Y_In04Int(struct urb* urb, struct pt_regs *regs){	int			err = 0;	usX2Ydev_t		*usX2Y = urb->context;	us428ctls_sharedmem_t	*us428ctls = usX2Y->us428ctls_sharedmem;	usX2Y->In04IntCalls++;	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->In04Buf)[8]); Master volume shows 0 here if fader is at max during boot ?!?	if (us428ctls) {		int diff = -1;		if (-2 == us428ctls->CtlSnapShotLast) {			diff = 0;			memcpy(usX2Y->In04Last, usX2Y->In04Buf, sizeof(usX2Y->In04Last));			us428ctls->CtlSnapShotLast = -1;		} else {			int i;			for (i = 0; i < 21; i++) {				if (usX2Y->In04Last[i] != ((char*)usX2Y->In04Buf)[i]) {					if (diff < 0)						diff = i;					usX2Y->In04Last[i] = ((char*)usX2Y->In04Buf)[i];				}			}		}		if (0 <= diff) {			int n = us428ctls->CtlSnapShotLast + 1;			if (n >= N_us428_ctl_BUFS  ||  n < 0)				n = 0;			memcpy(us428ctls->CtlSnapShot + n, usX2Y->In04Buf, sizeof(us428ctls->CtlSnapShot[0]));			us428ctls->CtlSnapShotDiffersAt[n] = diff;			us428ctls->CtlSnapShotLast = n;			wake_up(&usX2Y->us428ctls_wait_queue_head);		}	}			if (usX2Y->US04) {		if (0 == 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->p4outLast >= 0 && us428ctls->p4outLast < N_us428_p4out_BUFS) {			if (us428ctls->p4outLast != us428ctls->p4outSent) {				int j, send = us428ctls->p4outSent + 1;				if (send >= N_us428_p4out_BUFS)					send = 0;				for (j = 0; j < URBS_AsyncSeq  &&  !err; ++j)					if (0 == usX2Y->AS04.urb[j]->status) {						us428_p4out_t *p4out = us428ctls->p4out + send;	// FIXME if more then 1 p4out is new, 1 gets lost.						usb_fill_bulk_urb(usX2Y->AS04.urb[j], usX2Y->chip.dev,								  usb_sndbulkpipe(usX2Y->chip.dev, 0x04), &p4out->val.vol, 								  p4out->type == eLT_Light ? sizeof(us428_lights_t) : 5,								  i_usX2Y_Out04Int, usX2Y);						err = usb_submit_urb(usX2Y->AS04.urb[j], GFP_ATOMIC);						us428ctls->p4outSent = send;						break;					}			}		}	if (err)		snd_printk(KERN_ERR "In04Int() usb_submit_urb err=%i\n", err);	urb->dev = usX2Y->chip.dev;	usb_submit_urb(urb, GFP_ATOMIC);}/* * Prepare some urbs */int usX2Y_AsyncSeq04_init(usX2Ydev_t* usX2Y){	int	err = 0,		i;	if (NULL == (usX2Y->AS04.buffer = kmalloc(URB_DataLen_AsyncSeq*URBS_AsyncSeq, GFP_KERNEL))) {		err = -ENOMEM;	} else		for (i = 0; i < URBS_AsyncSeq; ++i) {			if (NULL == (usX2Y->AS04.urb[i] = usb_alloc_urb(0, GFP_KERNEL))) {				err = -ENOMEM;				break;			}			usb_fill_bulk_urb(	usX2Y->AS04.urb[i], usX2Y->chip.dev,						usb_sndbulkpipe(usX2Y->chip.dev, 0x04),						usX2Y->AS04.buffer + URB_DataLen_AsyncSeq*i, 0,						i_usX2Y_Out04Int, usX2Y				);		}	return err;}int usX2Y_In04_init(usX2Ydev_t* usX2Y){	int	err = 0;	if (! (usX2Y->In04urb = usb_alloc_urb(0, GFP_KERNEL)))		return -ENOMEM;	if (! (usX2Y->In04Buf = kmalloc(21, GFP_KERNEL))) {		usb_free_urb(usX2Y->In04urb);		return -ENOMEM;	}	 	init_waitqueue_head(&usX2Y->In04WaitQueue);	usb_fill_int_urb(usX2Y->In04urb, usX2Y->chip.dev, usb_rcvintpipe(usX2Y->chip.dev, 0x4),			 usX2Y->In04Buf, 21,			 i_usX2Y_In04Int, usX2Y,			 10);	err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);	return err;}static void usX2Y_unlinkSeq(snd_usX2Y_AsyncSeq_t* S){	int	i;	for (i = 0; i < URBS_AsyncSeq; ++i) {		if (S[i].urb) {			usb_kill_urb(S->urb[i]);			usb_free_urb(S->urb[i]);			S->urb[i] = NULL;		}	}	kfree(S->buffer);}static 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 */ }};static snd_card_t* usX2Y_create_card(struct usb_device* device){	int		dev;	snd_card_t*	card;	for (dev = 0; dev < SNDRV_CARDS; ++dev)		if (enable[dev] && !snd_usX2Y_card_used[dev])			break;	if (dev >= SNDRV_CARDS)		return NULL;	card = snd_card_new(index[dev], id[dev], THIS_MODULE, sizeof(usX2Ydev_t));	if (!card)		return NULL;	snd_usX2Y_card_used[usX2Y(card)->chip.index = dev] = 1;	card->private_free = snd_usX2Y_card_private_free;	usX2Y(card)->chip.dev = device;	usX2Y(card)->chip.card = card;	init_waitqueue_head(&usX2Y(card)->prepare_wait_queue);	init_MUTEX (&usX2Y(card)->prepare_mutex);	INIT_LIST_HEAD(&usX2Y(card)->chip.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)->chip.dev->bus->busnum, usX2Y(card)->chip.dev->devnum		);	snd_card_set_dev(card, &device->dev);	return card;}static void* usX2Y_usb_probe(struct usb_device* device, struct usb_interface *intf, const struct usb_device_id* device_id){	int		err;	snd_card_t*	card;	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) ||	    !(card = usX2Y_create_card(device)))		return NULL;	if ((err = usX2Y_hwdep_new(card, device)) < 0  ||	    (err = snd_card_register(card)) < 0) {		snd_card_free(card);		return NULL;	}	return card;}/* * new 2.5 USB kernel API */static int snd_usX2Y_probe(struct usb_interface *intf, const struct usb_device_id *id){	void *chip;	chip = usX2Y_usb_probe(interface_to_usbdev(intf), intf, id);	if (chip) {		dev_set_drvdata(&intf->dev, chip);		return 0;	} else		return -EIO;}static void snd_usX2Y_disconnect(struct usb_interface *intf){	usX2Y_usb_disconnect(interface_to_usbdev(intf),				 dev_get_drvdata(&intf->dev));}MODULE_DEVICE_TABLE(usb, snd_usX2Y_usb_id_table);static struct usb_driver snd_usX2Y_usb_driver = { 	.owner =	THIS_MODULE,	.name =		"snd-usb-usx2y",	.probe =	snd_usX2Y_probe,	.disconnect =	snd_usX2Y_disconnect,	.id_table =	snd_usX2Y_usb_id_table,};static void snd_usX2Y_card_private_free(snd_card_t *card){	kfree(usX2Y(card)->In04Buf);	usb_free_urb(usX2Y(card)->In04urb);	if (usX2Y(card)->us428ctls_sharedmem)		snd_free_pages(usX2Y(card)->us428ctls_sharedmem, sizeof(*usX2Y(card)->us428ctls_sharedmem));	if (usX2Y(card)->chip.index >= 0  &&  usX2Y(card)->chip.index < SNDRV_CARDS)		snd_usX2Y_card_used[usX2Y(card)->chip.index] = 0;}/* * Frees the device. */static void usX2Y_usb_disconnect(struct usb_device* device, void* ptr){	if (ptr) {		usX2Ydev_t* usX2Y = usX2Y((snd_card_t*)ptr);		struct list_head* p;		usX2Y->chip.shutdown = 1;		usX2Y->chip_status = USX2Y_STAT_CHIP_HUP;		usX2Y_unlinkSeq(&usX2Y->AS04);		usb_kill_urb(usX2Y->In04urb);		snd_card_disconnect((snd_card_t*)ptr);		/* release the midi resources */		list_for_each(p, &usX2Y->chip.midi_list) {			snd_usbmidi_disconnect(p);		}		if (usX2Y->us428ctls_sharedmem) 			wake_up(&usX2Y->us428ctls_wait_queue_head);		snd_card_free((snd_card_t*)ptr);	}}static int __init snd_usX2Y_module_init(void){	return usb_register(&snd_usX2Y_usb_driver);}static void __exit snd_usX2Y_module_exit(void){	usb_deregister(&snd_usX2Y_usb_driver);}module_init(snd_usX2Y_module_init)module_exit(snd_usX2Y_module_exit)