[mirror_ubuntu-jammy-kernel.git] / sound / usb / usx2y / usbusx2y.c

/*
 * 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_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
 *
 *   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("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)
Commit	Line	Data
1da177e4 LT	1	/*
	2	* usbusy2y.c - ALSA USB US-428 Driver
	3	*
230cd5e2 KW	4	2005-04-14 Karsten Wiese
	5	Version 0.8.7.2:
	6	Call snd_card_free() instead of snd_card_free_in_thread() to prevent oops with dead keyboard symptom.
	7	Tested ok with kernel 2.6.12-rc2.
	8
1da177e4 LT	9	2004-12-14 Karsten Wiese
	10	Version 0.8.7.1:
	11	snd_pcm_open for rawusb pcm-devices now returns -EBUSY if called without rawusb's hwdep device being open.
	12
	13	2004-12-02 Karsten Wiese
	14	Version 0.8.7:
	15	Use macro usb_maxpacket() for portability.
	16
	17	2004-10-26 Karsten Wiese
	18	Version 0.8.6:
	19	wake_up() process waiting in usX2Y_urbs_start() on error.
	20
	21	2004-10-21 Karsten Wiese
	22	Version 0.8.5:
	23	nrpacks is runtime or compiletime configurable now with tested values from 1 to 4.
	24
	25	2004-10-03 Karsten Wiese
	26	Version 0.8.2:
	27	Avoid any possible racing while in prepare callback.
	28
	29	2004-09-30 Karsten Wiese
	30	Version 0.8.0:
	31	Simplified things and made ohci work again.
	32
	33	2004-09-20 Karsten Wiese
	34	Version 0.7.3:
	35	Use usb_kill_urb() instead of deprecated (kernel 2.6.9) usb_unlink_urb().
	36
	37	2004-07-13 Karsten Wiese
	38	Version 0.7.1:
	39	Don't sleep in START/STOP callbacks anymore.
	40	us428 channels C/D not handled just for this version, sorry.
	41
	42	2004-06-21 Karsten Wiese
	43	Version 0.6.4:
	44	Temporarely suspend midi input
	45	to sanely call usb_set_interface() when setting format.
	46
	47	2004-06-12 Karsten Wiese
	48	Version 0.6.3:
	49	Made it thus the following rule is enforced:
	50	"All pcm substreams of one usX2Y have to operate at the same rate & format."
	51
	52	2004-04-06 Karsten Wiese
	53	Version 0.6.0:
	54	Runs on 2.6.5 kernel without any "--with-debug=" things.
	55	us224 reported running.
	56
	57	2004-01-14 Karsten Wiese
	58	Version 0.5.1:
	59	Runs with 2.6.1 kernel.
	60
	61	2003-12-30 Karsten Wiese
	62	Version 0.4.1:
	63	Fix 24Bit 4Channel capturing for the us428.
	64
	65	2003-11-27 Karsten Wiese, Martin Langer
	66	Version 0.4:
	67	us122 support.
	68	us224 could be tested by uncommenting the sections containing USB_ID_US224
	69
	70	2003-11-03 Karsten Wiese
	71	Version 0.3:
	72	24Bit support.
73	"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.
74
75	2003-08-22 Karsten Wiese
76	Version 0.0.8:
77	Removed EZUSB Firmware. First Stage Firmwaredownload is now done by tascam-firmware downloader.
78	See:
79	http://usb-midi-fw.sourceforge.net/tascam-firmware.tar.gz
80
81	2003-06-18 Karsten Wiese
82	Version 0.0.5:
83	changed to compile with kernel 2.4.21 and alsa 0.9.4
84
85	2002-10-16 Karsten Wiese
86	Version 0.0.4:
87	compiles again with alsa-current.
88	USB_ISO_ASAP not used anymore (most of the time), instead
89	urb->start_frame is calculated here now, some calls inside usb-driver don't need to happen anymore.
90
91	To get the best out of this:
92	Disable APM-support in the kernel as APM-BIOS calls (once each second) hard disable interrupt for many precious milliseconds.
93	This helped me much on my slowish PII 400 & PIII 500.
94	ACPI yet untested but might cause the same bad behaviour.
95	Use a kernel with lowlatency and preemptiv patches applied.
96	To autoload snd-usb-midi append a line
97	post-install snd-usb-us428 modprobe snd-usb-midi
98	to /etc/modules.conf.
99
100	known problems:
101	sliders, knobs, lights not yet handled except MASTER Volume slider.
102	"pcm -c 2" doesn't work. "pcm -c 2 -m direct_interleaved" does.
103	KDE3: "Enable full duplex operation" deadlocks.
104
105
106	2002-08-31 Karsten Wiese
107	Version 0.0.3: audio also simplex;
108	simplifying: iso urbs only 1 packet, melted structs.
109	ASYNC_UNLINK not used anymore: no more crashes so far.....
110	for alsa 0.9 rc3.
111
112	2002-08-09 Karsten Wiese
113	Version 0.0.2: midi works with snd-usb-midi, audio (only fullduplex now) with i.e. bristol.
114	The firmware has been sniffed from win2k us-428 driver 3.09.
115
116	* Copyright (c) 2002 - 2004 Karsten Wiese
117	*
118	* This program is free software; you can redistribute it and/or modify
119	* it under the terms of the GNU General Public License as published by
120	* the Free Software Foundation; either version 2 of the License, or
121	* (at your option) any later version.
122	*
123	* This program is distributed in the hope that it will be useful,
124	* but WITHOUT ANY WARRANTY; without even the implied warranty of
125	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
126	* GNU General Public License for more details.
127	*
128	* You should have received a copy of the GNU General Public License
129	* along with this program; if not, write to the Free Software
130	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
131	*/
132
133	#include <sound/driver.h>
134	#include <linux/init.h>
135	#include <linux/module.h>
136	#include <linux/moduleparam.h>
137	#include <linux/interrupt.h>
138	#include <linux/usb.h>
139	#include <sound/core.h>
140	#include <sound/initval.h>
141	#include <sound/pcm.h>
142
143	#include <sound/rawmidi.h>
144	#include "usx2y.h"
145	#include "usbusx2y.h"
146	#include "usX2Yhwdep.h"
147
148
149
150	MODULE_AUTHOR("Karsten Wiese <annabellesgarden@yahoo.de>");
230cd5e2	151	MODULE_DESCRIPTION("TASCAM "NAME_ALLCAPS" Version 0.8.7.2");
1da177e4 LT	152	MODULE_LICENSE("GPL");
	153	MODULE_SUPPORTED_DEVICE("{{TASCAM(0x1604), "NAME_ALLCAPS"(0x8001)(0x8005)(0x8007) }}");
	154
	155	static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
	156	static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for this card */
	157	static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
	158
	159	module_param_array(index, int, NULL, 0444);
	160	MODULE_PARM_DESC(index, "Index value for "NAME_ALLCAPS".");
	161	module_param_array(id, charp, NULL, 0444);
	162	MODULE_PARM_DESC(id, "ID string for "NAME_ALLCAPS".");
	163	module_param_array(enable, bool, NULL, 0444);
	164	MODULE_PARM_DESC(enable, "Enable "NAME_ALLCAPS".");
	165
	166
	167	static int snd_usX2Y_card_used[SNDRV_CARDS];
	168
	169	static void usX2Y_usb_disconnect(struct usb_device* usb_device, void* ptr);
	170	static void snd_usX2Y_card_private_free(snd_card_t *card);
	171
	172	/*
	173	* pipe 4 is used for switching the lamps, setting samplerate, volumes ....
	174	*/
	175	static void i_usX2Y_Out04Int(struct urb* urb, struct pt_regs *regs)
	176	{
	177	#ifdef CONFIG_SND_DEBUG
	178	if (urb->status) {
	179	int i;
	180	usX2Ydev_t* usX2Y = urb->context;
	181	for (i = 0; i < 10 && usX2Y->AS04.urb[i] != urb; i++);
	182	snd_printdd("i_usX2Y_Out04Int() urb %i status=%i\n", i, urb->status);
	183	}
	184	#endif
	185	}
	186
	187	static void i_usX2Y_In04Int(struct urb* urb, struct pt_regs *regs)
	188	{
	189	int err = 0;
	190	usX2Ydev_t *usX2Y = urb->context;
	191	us428ctls_sharedmem_t *us428ctls = usX2Y->us428ctls_sharedmem;
	192
	193	usX2Y->In04IntCalls++;
	194
	195	if (urb->status) {
	196	snd_printdd("Interrupt Pipe 4 came back with status=%i\n", urb->status);
	197	return;
	198	}
	199
	200	// printk("%i:0x%02X ", 8, (int)((unsigned char*)usX2Y->In04Buf)[8]); Master volume shows 0 here if fader is at max during boot ?!?
	201	if (us428ctls) {
	202	int diff = -1;
	203	if (-2 == us428ctls->CtlSnapShotLast) {
	204	diff = 0;
	205	memcpy(usX2Y->In04Last, usX2Y->In04Buf, sizeof(usX2Y->In04Last));
	206	us428ctls->CtlSnapShotLast = -1;
	207	} else {
	208	int i;
	209	for (i = 0; i < 21; i++) {
	210	if (usX2Y->In04Last[i] != ((char*)usX2Y->In04Buf)[i]) {
	211	if (diff < 0)
	212	diff = i;
	213	usX2Y->In04Last[i] = ((char*)usX2Y->In04Buf)[i];
	214	}
	215	}
216	}
217	if (0 <= diff) {
218	int n = us428ctls->CtlSnapShotLast + 1;
219	if (n >= N_us428_ctl_BUFS \|\| n < 0)
220	n = 0;
221	memcpy(us428ctls->CtlSnapShot + n, usX2Y->In04Buf, sizeof(us428ctls->CtlSnapShot[0]));
222	us428ctls->CtlSnapShotDiffersAt[n] = diff;
223	us428ctls->CtlSnapShotLast = n;
224	wake_up(&usX2Y->us428ctls_wait_queue_head);
225	}
226	}
227
228
229	if (usX2Y->US04) {
230	if (0 == usX2Y->US04->submitted)
231	do
232	err = usb_submit_urb(usX2Y->US04->urb[usX2Y->US04->submitted++], GFP_ATOMIC);
233	while (!err && usX2Y->US04->submitted < usX2Y->US04->len);
234	} else
235	if (us428ctls && us428ctls->p4outLast >= 0 && us428ctls->p4outLast < N_us428_p4out_BUFS) {
236	if (us428ctls->p4outLast != us428ctls->p4outSent) {
237	int j, send = us428ctls->p4outSent + 1;
238	if (send >= N_us428_p4out_BUFS)
239	send = 0;
240	for (j = 0; j < URBS_AsyncSeq && !err; ++j)
241	if (0 == usX2Y->AS04.urb[j]->status) {
242	us428_p4out_t *p4out = us428ctls->p4out + send; // FIXME if more then 1 p4out is new, 1 gets lost.
243	usb_fill_bulk_urb(usX2Y->AS04.urb[j], usX2Y->chip.dev,
244	usb_sndbulkpipe(usX2Y->chip.dev, 0x04), &p4out->val.vol,
245	p4out->type == eLT_Light ? sizeof(us428_lights_t) : 5,
246	i_usX2Y_Out04Int, usX2Y);
247	err = usb_submit_urb(usX2Y->AS04.urb[j], GFP_ATOMIC);
248	us428ctls->p4outSent = send;
249	break;
250	}
251	}
252	}
253
254	if (err) {
255	snd_printk("In04Int() usb_submit_urb err=%i\n", err);
256	}
257
258	urb->dev = usX2Y->chip.dev;
259	usb_submit_urb(urb, GFP_ATOMIC);
260	}
261
262	/*
263	* Prepare some urbs
264	*/
265	int usX2Y_AsyncSeq04_init(usX2Ydev_t* usX2Y)
266	{
267	int err = 0,
268	i;
269
270	if (NULL == (usX2Y->AS04.buffer = kmalloc(URB_DataLen_AsyncSeq*URBS_AsyncSeq, GFP_KERNEL))) {
271	err = -ENOMEM;
272	} else
273	for (i = 0; i < URBS_AsyncSeq; ++i) {
274	if (NULL == (usX2Y->AS04.urb[i] = usb_alloc_urb(0, GFP_KERNEL))) {
275	err = -ENOMEM;
276	break;
277	}
278	usb_fill_bulk_urb( usX2Y->AS04.urb[i], usX2Y->chip.dev,
279	usb_sndbulkpipe(usX2Y->chip.dev, 0x04),
280	usX2Y->AS04.buffer + URB_DataLen_AsyncSeq*i, 0,
281	i_usX2Y_Out04Int, usX2Y
282	);
283	}
284	return err;
285	}
286
287	int usX2Y_In04_init(usX2Ydev_t* usX2Y)
288	{
289	int err = 0;
290	if (! (usX2Y->In04urb = usb_alloc_urb(0, GFP_KERNEL)))
291	return -ENOMEM;
292
293	if (! (usX2Y->In04Buf = kmalloc(21, GFP_KERNEL))) {
294	usb_free_urb(usX2Y->In04urb);
295	return -ENOMEM;
296	}
297
298	init_waitqueue_head(&usX2Y->In04WaitQueue);
299	usb_fill_int_urb(usX2Y->In04urb, usX2Y->chip.dev, usb_rcvintpipe(usX2Y->chip.dev, 0x4),
300	usX2Y->In04Buf, 21,
301	i_usX2Y_In04Int, usX2Y,
302	10);
303	err = usb_submit_urb(usX2Y->In04urb, GFP_KERNEL);
304	return err;
305	}
306
307	static void usX2Y_unlinkSeq(snd_usX2Y_AsyncSeq_t* S)
308	{
309	int i;
310	for (i = 0; i < URBS_AsyncSeq; ++i) {
311	if (S[i].urb) {
312	usb_kill_urb(S->urb[i]);
313	usb_free_urb(S->urb[i]);
314	S->urb[i] = NULL;
315	}
316	}
317	kfree(S->buffer);
318	}
319
320
321	static struct usb_device_id snd_usX2Y_usb_id_table[] = {
322	{
323	.match_flags = USB_DEVICE_ID_MATCH_DEVICE,
324	.idVendor = 0x1604,
325	.idProduct = USB_ID_US428
326	},
327	{
328	.match_flags = USB_DEVICE_ID_MATCH_DEVICE,
329	.idVendor = 0x1604,
330	.idProduct = USB_ID_US122
331	},
332	{
333	.match_flags = USB_DEVICE_ID_MATCH_DEVICE,
334	.idVendor = 0x1604,
335	.idProduct = USB_ID_US224
336	},
337	{ /* terminator */ }
338	};
339
340	static snd_card_t* usX2Y_create_card(struct usb_device* device)
341	{
342	int dev;
343	snd_card_t* card;
344	for (dev = 0; dev < SNDRV_CARDS; ++dev)
345	if (enable[dev] && !snd_usX2Y_card_used[dev])
346	break;
347	if (dev >= SNDRV_CARDS)
348	return NULL;
349	card = snd_card_new(index[dev], id[dev], THIS_MODULE, sizeof(usX2Ydev_t));
350	if (!card)
351	return NULL;
352	snd_usX2Y_card_used[usX2Y(card)->chip.index = dev] = 1;
353	card->private_free = snd_usX2Y_card_private_free;
354	usX2Y(card)->chip.dev = device;
355	usX2Y(card)->chip.card = card;
356	init_waitqueue_head(&usX2Y(card)->prepare_wait_queue);
357	init_MUTEX (&usX2Y(card)->prepare_mutex);
358	INIT_LIST_HEAD(&usX2Y(card)->chip.midi_list);
359	strcpy(card->driver, "USB "NAME_ALLCAPS"");
360	sprintf(card->shortname, "TASCAM "NAME_ALLCAPS"");
361	sprintf(card->longname, "%s (%x:%x if %d at %03d/%03d)",
362	card->shortname,
363	le16_to_cpu(device->descriptor.idVendor),
364	le16_to_cpu(device->descriptor.idProduct),
365	0,//us428(card)->usbmidi.ifnum,
366	usX2Y(card)->chip.dev->bus->busnum, usX2Y(card)->chip.dev->devnum
367	);
368	snd_card_set_dev(card, &device->dev);
369	return card;
370	}
371
372
373	static void* usX2Y_usb_probe(struct usb_device* device, struct usb_interface intf, const struct usb_device_id device_id)
374	{
375	int err;
376	snd_card_t* card;
377	if (le16_to_cpu(device->descriptor.idVendor) != 0x1604 \|\|
378	(le16_to_cpu(device->descriptor.idProduct) != USB_ID_US122 &&
379	le16_to_cpu(device->descriptor.idProduct) != USB_ID_US224 &&
380	le16_to_cpu(device->descriptor.idProduct) != USB_ID_US428) \|\|
381	!(card = usX2Y_create_card(device)))
382	return NULL;
383	if ((err = usX2Y_hwdep_new(card, device)) < 0 \|\|
384	(err = snd_card_register(card)) < 0) {
385	snd_card_free(card);
386	return NULL;
387	}
388	return card;
389	}
390
391	/*
392	* new 2.5 USB kernel API
393	*/
394	static int snd_usX2Y_probe(struct usb_interface intf, const struct usb_device_id id)
395	{
396	void *chip;
397	chip = usX2Y_usb_probe(interface_to_usbdev(intf), intf, id);
398	if (chip) {
399	dev_set_drvdata(&intf->dev, chip);
400	return 0;
401	} else
402	return -EIO;
403	}
404
405	static void snd_usX2Y_disconnect(struct usb_interface *intf)
406	{
407	usX2Y_usb_disconnect(interface_to_usbdev(intf),
408	dev_get_drvdata(&intf->dev));
409	}
410
411	MODULE_DEVICE_TABLE(usb, snd_usX2Y_usb_id_table);
412	static struct usb_driver snd_usX2Y_usb_driver = {
413	.owner = THIS_MODULE,
414	.name = "snd-usb-usx2y",
415	.probe = snd_usX2Y_probe,
416	.disconnect = snd_usX2Y_disconnect,
417	.id_table = snd_usX2Y_usb_id_table,
418	};
419
420	static void snd_usX2Y_card_private_free(snd_card_t *card)
421	{
422	kfree(usX2Y(card)->In04Buf);
423	usb_free_urb(usX2Y(card)->In04urb);
424	if (usX2Y(card)->us428ctls_sharedmem)
425	snd_free_pages(usX2Y(card)->us428ctls_sharedmem, sizeof(*usX2Y(card)->us428ctls_sharedmem));
426	if (usX2Y(card)->chip.index >= 0 && usX2Y(card)->chip.index < SNDRV_CARDS)
427	snd_usX2Y_card_used[usX2Y(card)->chip.index] = 0;
428	}
429
430	/*
431	* Frees the device.
432	*/
433	static void usX2Y_usb_disconnect(struct usb_device* device, void* ptr)
434	{
435	if (ptr) {
436	usX2Ydev_t* usX2Y = usX2Y((snd_card_t*)ptr);
437	struct list_head* p;
1da177e4 LT	438	usX2Y->chip.shutdown = 1;
	439	usX2Y->chip_status = USX2Y_STAT_CHIP_HUP;
	440	usX2Y_unlinkSeq(&usX2Y->AS04);
	441	usb_kill_urb(usX2Y->In04urb);
	442	snd_card_disconnect((snd_card_t*)ptr);
	443	/* release the midi resources */
	444	list_for_each(p, &usX2Y->chip.midi_list) {
ee733397	445	snd_usbmidi_disconnect(p);
1da177e4 LT	446	}
	447	if (usX2Y->us428ctls_sharedmem)
	448	wake_up(&usX2Y->us428ctls_wait_queue_head);
230cd5e2	449	snd_card_free((snd_card_t*)ptr);
1da177e4 LT	450	}
	451	}
	452
	453	static int __init snd_usX2Y_module_init(void)
	454	{
	455	return usb_register(&snd_usX2Y_usb_driver);
	456	}
	457
	458	static void __exit snd_usX2Y_module_exit(void)
	459	{
	460	usb_deregister(&snd_usX2Y_usb_driver);
	461	}
	462
	463	module_init(snd_usX2Y_module_init)
	464	module_exit(snd_usX2Y_module_exit)