[PATCH] USB: remove OBSOLETE_OSS_USB_DRIVER drivers

This patch removes the obsolete USB_MIDI and USB_AUDIO drivers.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

6 files changed, 0 insertions, 6345 deletions

diff --git a/drivers/usb/class/Kconfig b/drivers/usb/class/Kconfig
index ef105a92a7b..3a9102d2591 100644
--- a/drivers/usb/class/Kconfig
+++ b/drivers/usb/class/Kconfig
@@ -4,53 +4,6 @@
 comment "USB Device Class drivers"
 	depends on USB
 
-config OBSOLETE_OSS_USB_DRIVER
-	bool "Obsolete OSS USB drivers"
-	depends on USB && SOUND
-	help
-	  This option enables support for the obsolete USB Audio and Midi
-	  drivers that are scheduled for removal in the near future since
-	  there are ALSA drivers for the same hardware.
-
-	  Please contact Adrian Bunk <bunk@stusta.de> if you had to
-	  say Y here because of missing support in the ALSA drivers.
-
-	  If unsure, say N.
-
-config USB_AUDIO
-	tristate "USB Audio support"
-	depends on USB && SOUND && OBSOLETE_OSS_USB_DRIVER
-	help
-	  Say Y here if you want to connect USB audio equipment such as
-	  speakers to your computer's USB port. You only need this if you use
-	  the OSS sound driver; ALSA has its own option for usb audio support.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called audio.
-
-config USB_MIDI
-	tristate "USB MIDI support"
-	depends on USB && SOUND && OBSOLETE_OSS_USB_DRIVER
-	---help---
-	  Say Y here if you want to connect a USB MIDI device to your
-	  computer's USB port.  You only need this if you use the OSS
-	  sound system; USB MIDI devices are supported by ALSA's USB
-	  audio driver. This driver is for devices that comply with
-	  'Universal Serial Bus Device Class Definition for MIDI Device'.
-
-	  The following devices are known to work:
-	  * Steinberg USB2MIDI
-	  * Roland MPU64
-	  * Roland PC-300
-	  * Roland SC8850
-	  * Roland UM-1
-	  * Roland UM-2
-	  * Roland UA-100
-	  * Yamaha MU1000
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called usb-midi.
-
 config USB_ACM
 	tristate "USB Modem (CDC ACM) support"
 	depends on USB
diff --git a/drivers/usb/class/Makefile b/drivers/usb/class/Makefile
index 22947124775..cc391e6c2af 100644
--- a/drivers/usb/class/Makefile
+++ b/drivers/usb/class/Makefile
@@ -4,6 +4,4 @@
 #
 
 obj-$(CONFIG_USB_ACM)		+= cdc-acm.o
-obj-$(CONFIG_USB_AUDIO)		+= audio.o
-obj-$(CONFIG_USB_MIDI)		+= usb-midi.o
 obj-$(CONFIG_USB_PRINTER)	+= usblp.o
diff --git a/drivers/usb/class/audio.c b/drivers/usb/class/audio.c
deleted file mode 100644
index 3ad9ee8b84a..00000000000
--- a/drivers/usb/class/audio.c
+++ /dev/null
@@ -1,3869 +0,0 @@
-/*****************************************************************************/
-
-/*
- *	audio.c  --  USB Audio Class driver
- *
- *	Copyright (C) 1999, 2000, 2001, 2003, 2004
- *	    Alan Cox (alan@lxorguk.ukuu.org.uk)
- *	    Thomas Sailer (sailer@ife.ee.ethz.ch)
- *
- *	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.
- *
- * Debugging:
- * 	Use the 'lsusb' utility to dump the descriptors.
- *
- * 1999-09-07:  Alan Cox
- *		Parsing Audio descriptor patch
- * 1999-09-08:  Thomas Sailer
- *		Added OSS compatible data io functions; both parts of the
- *		driver remain to be glued together
- * 1999-09-10:  Thomas Sailer
- *		Beautified the driver. Added sample format conversions.
- *		Still not properly glued with the parsing code.
- *		The parsing code seems to have its problems btw,
- *		Since it parses all available configs but doesn't
- *		store which iface/altsetting belongs to which config.
- * 1999-09-20:  Thomas Sailer
- *		Threw out Alan's parsing code and implemented my own one.
- *		You cannot reasonnably linearly parse audio descriptors,
- *		especially the AudioClass descriptors have to be considered
- *		pointer lists. Mixer parsing untested, due to lack of device.
- *		First stab at synch pipe implementation, the Dallas USB DAC
- *		wants to use an Asynch out pipe. usb_audio_state now basically
- *		only contains lists of mixer and wave devices. We can therefore
- *		now have multiple mixer/wave devices per USB device.
- * 1999-10-28:  Thomas Sailer
- *		Converted to URB API. Fixed a taskstate/wakeup semantics mistake
- *		that made the driver consume all available CPU cycles.
- *		Now runs stable on UHCI-Acher/Fliegl/Sailer.
- * 1999-10-31:  Thomas Sailer
- *		Audio can now be unloaded if it is not in use by any mixer
- *		or dsp client (formerly you had to disconnect the audio devices
- *		from the USB port)
- *		Finally, about three months after ordering, my "Maxxtro SPK222"
- *		speakers arrived, isn't disdata a great mail order company 8-)
- *		Parse class specific endpoint descriptor of the audiostreaming
- *		interfaces and take the endpoint attributes from there.
- *		Unbelievably, the Philips USB DAC has a sampling rate range
- *		of over a decade, yet does not support the sampling rate control!
- *		No wonder it sounds so bad, has very audible sampling rate
- *		conversion distortion. Don't try to listen to it using
- *		decent headphones!
- *		"Let's make things better" -> but please Philips start with your
- *		own stuff!!!!
- * 1999-11-02:  Thomas Sailer
- *		It takes the Philips boxes several seconds to acquire synchronisation
- *		that means they won't play short sounds. Should probably maintain
- *		the ISO datastream even if there's nothing to play.
- *		Fix counting the total_bytes counter, RealPlayer G2 depends on it.
- * 1999-12-20:  Thomas Sailer
- *		Fix bad bug in conversion to per interface probing.
- *		disconnect was called multiple times for the audio device,
- *		leading to a premature freeing of the audio structures
- * 2000-05-13:  Thomas Sailer
- *		I don't remember who changed the find_format routine,
- *              but the change was completely broken for the Dallas
- *              chip. Anyway taking sampling rate into account in find_format
- *              is bad and should not be done unless there are devices with
- *              completely broken audio descriptors. Unless someone shows
- *              me such a descriptor, I will not allow find_format to
- *              take the sampling rate into account.
- *              Also, the former find_format made:
- *              - mpg123 play mono instead of stereo
- *              - sox completely fail for wav's with sample rates < 44.1kHz
- *                  for the Dallas chip.
- *              Also fix a rather long standing problem with applications that
- *              use "small" writes producing no sound at all.
- * 2000-05-15:  Thomas Sailer
- *		My fears came true, the Philips camera indeed has pretty stupid
- *              audio descriptors.
- * 2000-05-17:  Thomas Sailer
- *		Nemsoft spotted my stupid last minute change, thanks
- * 2000-05-19:  Thomas Sailer
- *		Fixed FEATURE_UNIT thinkos found thanks to the KC Technology
- *              Xtend device. Basically the driver treated FEATURE_UNIT's sourced
- *              by mono terminals as stereo.
- * 2000-05-20:  Thomas Sailer
- *		SELECTOR support (and thus selecting record channels from the mixer).
- *              Somewhat peculiar due to OSS interface limitations. Only works
- *              for channels where a "slider" is already in front of it (i.e.
- *              a MIXER unit or a FEATURE unit with volume capability).
- * 2000-11-26:  Thomas Sailer
- *              Workaround for Dallas DS4201. The DS4201 uses PCM8 as format tag for
- *              its 8 bit modes, but expects signed data (and should therefore have used PCM).
- * 2001-03-10:  Thomas Sailer
- *              provide abs function, prevent picking up a bogus kernel macro
- *              for abs. Bug report by Andrew Morton <andrewm@uow.edu.au>
- * 2001-06-16:  Bryce Nesbitt <bryce@obviously.com>
- *              Fix SNDCTL_DSP_STEREO API violation
- * 2003-04-08:	Oliver Neukum (oliver@neukum.name):
- *		Setting a configuration is done by usbcore and must not be overridden
- * 2004-02-27:  Workaround for broken synch descriptors
- * 2004-03-07:	Alan Stern <stern@rowland.harvard.edu>
- *		Add usb_ifnum_to_if() and usb_altnum_to_altsetting() support.
- *		Use the in-memory descriptors instead of reading them from the device.
- * 
- */
-
-/*
- * Strategy:
- *
- * Alan Cox and Thomas Sailer are starting to dig at opposite ends and
- * are hoping to meet in the middle, just like tunnel diggers :)
- * Alan tackles the descriptor parsing, Thomas the actual data IO and the
- * OSS compatible interface.
- *
- * Data IO implementation issues
- *
- * A mmap'able ring buffer per direction is implemented, because
- * almost every OSS app expects it. It is however impractical to
- * transmit/receive USB data directly into and out of the ring buffer,
- * due to alignment and synchronisation issues. Instead, the ring buffer
- * feeds a constant time delay line that handles the USB issues.
- *
- * Now we first try to find an alternate setting that exactly matches
- * the sample format requested by the user. If we find one, we do not
- * need to perform any sample rate conversions. If there is no matching
- * altsetting, we choose the closest one and perform sample format
- * conversions. We never do sample rate conversion; these are too
- * expensive to be performed in the kernel.
- *
- * Current status: no known HCD-specific issues.
- *
- * Generally: Due to the brokenness of the Audio Class spec
- * it seems generally impossible to write a generic Audio Class driver,
- * so a reasonable driver should implement the features that are actually
- * used.
- *
- * Parsing implementation issues
- *
- * One cannot reasonably parse the AudioClass descriptors linearly.
- * Therefore the current implementation features routines to look
- * for a specific descriptor in the descriptor list.
- *
- * How does the parsing work? First, all interfaces are searched
- * for an AudioControl class interface. If found, the config descriptor
- * that belongs to the current configuration is searched and
- * the HEADER descriptor is found. It contains a list of
- * all AudioStreaming and MIDIStreaming devices. This list is then walked,
- * and all AudioStreaming interfaces are classified into input and output
- * interfaces (according to the endpoint0 direction in altsetting1) (MIDIStreaming
- * is currently not supported). The input & output list is then used
- * to group inputs and outputs together and issued pairwise to the
- * AudioStreaming class parser. Finally, all OUTPUT_TERMINAL descriptors
- * are walked and issued to the mixer construction routine.
- *
- * The AudioStreaming parser simply enumerates all altsettings belonging
- * to the specified interface. It looks for AS_GENERAL and FORMAT_TYPE
- * class specific descriptors to extract the sample format/sample rate
- * data. Only sample format types PCM and PCM8 are supported right now, and
- * only FORMAT_TYPE_I is handled. The isochronous data endpoint needs to
- * be the first endpoint of the interface, and the optional synchronisation
- * isochronous endpoint the second one.
- *
- * Mixer construction works as follows: The various TERMINAL and UNIT
- * descriptors span a tree from the root (OUTPUT_TERMINAL) through the
- * intermediate nodes (UNITs) to the leaves (INPUT_TERMINAL). We walk
- * that tree in a depth first manner. FEATURE_UNITs may contribute volume,
- * bass and treble sliders to the mixer, MIXER_UNITs volume sliders.
- * The terminal type encoded in the INPUT_TERMINALs feeds a heuristic
- * to determine "meaningful" OSS slider numbers, however we will see
- * how well this works in practice. Other features are not used at the
- * moment, they seem less often used. Also, it seems difficult at least
- * to construct recording source switches from SELECTOR_UNITs, but
- * since there are not many USB ADC's available, we leave that for later.
- */
-
-/*****************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/sched.h>
-#include <linux/smp_lock.h>
-#include <linux/module.h>
-#include <linux/sound.h>
-#include <linux/soundcard.h>
-#include <linux/list.h>
-#include <linux/vmalloc.h>
-#include <linux/init.h>
-#include <linux/poll.h>
-#include <linux/bitops.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-#include <linux/usb.h>
-
-#include "audio.h"
-
-/*
- * Version Information
- */
-#define DRIVER_VERSION "v1.0.0"
-#define DRIVER_AUTHOR "Alan Cox <alan@lxorguk.ukuu.org.uk>, Thomas Sailer (sailer@ife.ee.ethz.ch)"
-#define DRIVER_DESC "USB Audio Class driver"
-
-#define AUDIO_DEBUG 1
-
-#define SND_DEV_DSP16   5
-
-#define dprintk(x)
-
-/* --------------------------------------------------------------------- */
-
-/*
- * Linked list of all audio devices...
- */
-static struct list_head audiodevs = LIST_HEAD_INIT(audiodevs);
-static DECLARE_MUTEX(open_sem);
-
-/*
- * wait queue for processes wanting to open an USB audio device
- */
-static DECLARE_WAIT_QUEUE_HEAD(open_wait);
-
-
-#define MAXFORMATS        MAX_ALT
-#define DMABUFSHIFT       17  /* 128k worth of DMA buffer */
-#define NRSGBUF           (1U<<(DMABUFSHIFT-PAGE_SHIFT))
-
-/*
- * This influences:
- * - Latency
- * - Interrupt rate
- * - Synchronisation behaviour
- * Don't touch this if you don't understand all of the above.
- */
-#define DESCFRAMES  5
-#define SYNCFRAMES  DESCFRAMES
-
-#define MIXFLG_STEREOIN   1
-#define MIXFLG_STEREOOUT  2
-
-struct mixerchannel {
-	__u16 value;
-	__u16 osschannel;  /* number of the OSS channel */
-	__s16 minval, maxval;
-	__u16 slctunitid;
-	__u8 unitid;
-	__u8 selector;
-	__u8 chnum;
-	__u8 flags;
-};
-
-struct audioformat {
-	unsigned int format;
-	unsigned int sratelo;
-	unsigned int sratehi;
-	unsigned char altsetting;
-	unsigned char attributes;
-};
-
-struct dmabuf {
-	/* buffer data format */
-	unsigned int format;
-	unsigned int srate;
-	/* physical buffer */
-	unsigned char *sgbuf[NRSGBUF];
-	unsigned bufsize;
-	unsigned numfrag;
-	unsigned fragshift;
-	unsigned wrptr, rdptr;
-	unsigned total_bytes;
-	int count;
-	unsigned error; /* over/underrun */
-	wait_queue_head_t wait;
-	/* redundant, but makes calculations easier */
-	unsigned fragsize;
-	unsigned dmasize;
-	/* OSS stuff */
-	unsigned mapped:1;
-	unsigned ready:1;
-	unsigned ossfragshift;
-	int ossmaxfrags;
-	unsigned subdivision;
-};
-
-struct usb_audio_state;
-
-#define FLG_URB0RUNNING   1
-#define FLG_URB1RUNNING   2
-#define FLG_SYNC0RUNNING  4
-#define FLG_SYNC1RUNNING  8
-#define FLG_RUNNING      16
-#define FLG_CONNECTED    32
-
-struct my_data_urb {
-	struct urb *urb;
-};
-
-struct my_sync_urb {
-	struct urb *urb;
-};
-
-
-struct usb_audiodev {
-	struct list_head list;
-	struct usb_audio_state *state;
-	
-	/* soundcore stuff */
-	int dev_audio;
-
-	/* wave stuff */
-	mode_t open_mode;
-	spinlock_t lock;         /* DMA buffer access spinlock */
-
-	struct usbin {
-		int interface;           /* Interface number, -1 means not used */
-		unsigned int format;     /* USB data format */
-		unsigned int datapipe;   /* the data input pipe */
-		unsigned int syncpipe;   /* the synchronisation pipe - 0 for anything but adaptive IN mode */
-		unsigned int syncinterval;  /* P for adaptive IN mode, 0 otherwise */
-		unsigned int freqn;      /* nominal sampling rate in USB format, i.e. fs/1000 in Q10.14 */
-		unsigned int freqmax;    /* maximum sampling rate, used for buffer management */
-		unsigned int phase;      /* phase accumulator */
-		unsigned int flags;      /* see FLG_ defines */
-		
-		struct my_data_urb durb[2];  /* ISO descriptors for the data endpoint */
-		struct my_sync_urb surb[2];  /* ISO sync pipe descriptor if needed */
-		
-		struct dmabuf dma;
-	} usbin;
-
-	struct usbout {
-		int interface;           /* Interface number, -1 means not used */
-		unsigned int format;     /* USB data format */
-		unsigned int datapipe;   /* the data input pipe */
-		unsigned int syncpipe;   /* the synchronisation pipe - 0 for anything but asynchronous OUT mode */
-		unsigned int syncinterval;  /* P for asynchronous OUT mode, 0 otherwise */
-		unsigned int freqn;      /* nominal sampling rate in USB format, i.e. fs/1000 in Q10.14 */
-		unsigned int freqm;      /* momentary sampling rate in USB format, i.e. fs/1000 in Q10.14 */
-		unsigned int freqmax;    /* maximum sampling rate, used for buffer management */
-		unsigned int phase;      /* phase accumulator */
-		unsigned int flags;      /* see FLG_ defines */
-
-		struct my_data_urb durb[2];  /* ISO descriptors for the data endpoint */
-		struct my_sync_urb surb[2];  /* ISO sync pipe descriptor if needed */
-		
-		struct dmabuf dma;
-	} usbout;
-
-
-	unsigned int numfmtin, numfmtout;
-	struct audioformat fmtin[MAXFORMATS];
-	struct audioformat fmtout[MAXFORMATS];
-};  
-
-struct usb_mixerdev {
-	struct list_head list;
-	struct usb_audio_state *state;
-
-	/* soundcore stuff */
-	int dev_mixer;
-
-	unsigned char iface;  /* interface number of the AudioControl interface */
-
-	/* USB format descriptions */
-	unsigned int numch, modcnt;
-
-	/* mixch is last and gets allocated dynamically */
-	struct mixerchannel ch[0];
-};
-
-struct usb_audio_state {
-	struct list_head audiodev;
-
-	/* USB device */
-	struct usb_device *usbdev;
-
-	struct list_head audiolist;
-	struct list_head mixerlist;
-
-	unsigned count;  /* usage counter; NOTE: the usb stack is also considered a user */
-};
-
-/* private audio format extensions */
-#define AFMT_STEREO        0x80000000
-#define AFMT_ISSTEREO(x)   ((x) & AFMT_STEREO)
-#define AFMT_IS16BIT(x)    ((x) & (AFMT_S16_LE|AFMT_S16_BE|AFMT_U16_LE|AFMT_U16_BE))
-#define AFMT_ISUNSIGNED(x) ((x) & (AFMT_U8|AFMT_U16_LE|AFMT_U16_BE))
-#define AFMT_BYTESSHIFT(x) ((AFMT_ISSTEREO(x) ? 1 : 0) + (AFMT_IS16BIT(x) ? 1 : 0))
-#define AFMT_BYTES(x)      (1<<AFMT_BYTESSHFIT(x))
-
-/* --------------------------------------------------------------------- */
-
-static inline unsigned ld2(unsigned int x)
-{
-	unsigned r = 0;
-	
-	if (x >= 0x10000) {
-		x >>= 16;
-		r += 16;
-	}
-	if (x >= 0x100) {
-		x >>= 8;
-		r += 8;
-	}
-	if (x >= 0x10) {
-		x >>= 4;
-		r += 4;
-	}
-	if (x >= 4) {
-		x >>= 2;
-		r += 2;
-	}
-	if (x >= 2)
-		r++;
-	return r;
-}
-
-/* --------------------------------------------------------------------- */
-
-/*
- * OSS compatible ring buffer management. The ring buffer may be mmap'ed into
- * an application address space.
- *
- * I first used the rvmalloc stuff copied from bttv. Alan Cox did not like it, so
- * we now use an array of pointers to a single page each. This saves us the
- * kernel page table manipulations, but we have to do a page table alike mechanism
- * (though only one indirection) in software.
- */
-
-static void dmabuf_release(struct dmabuf *db)
-{
-	unsigned int nr;
-	void *p;
-
-	for(nr = 0; nr < NRSGBUF; nr++) {
-		if (!(p = db->sgbuf[nr]))
-			continue;
-		ClearPageReserved(virt_to_page(p));
-		free_page((unsigned long)p);
-		db->sgbuf[nr] = NULL;
-	}
-	db->mapped = db->ready = 0;
-}
-
-static int dmabuf_init(struct dmabuf *db)
-{
-	unsigned int nr, bytepersec, bufs;
-	void *p;
-
-	/* initialize some fields */
-	db->rdptr = db->wrptr = db->total_bytes = db->count = db->error = 0;
-	/* calculate required buffer size */
-	bytepersec = db->srate << AFMT_BYTESSHIFT(db->format);
-	bufs = 1U << DMABUFSHIFT;
-	if (db->ossfragshift) {
-		if ((1000 << db->ossfragshift) < bytepersec)
-			db->fragshift = ld2(bytepersec/1000);
-		else
-			db->fragshift = db->ossfragshift;
-	} else {
-		db->fragshift = ld2(bytepersec/100/(db->subdivision ? db->subdivision : 1));
-		if (db->fragshift < 3)
-			db->fragshift = 3;
-	}
-	db->numfrag = bufs >> db->fragshift;
-	while (db->numfrag < 4 && db->fragshift > 3) {
-		db->fragshift--;
-		db->numfrag = bufs >> db->fragshift;
-	}
-	db->fragsize = 1 << db->fragshift;
-	if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)
-		db->numfrag = db->ossmaxfrags;
-	db->dmasize = db->numfrag << db->fragshift;
-	for(nr = 0; nr < NRSGBUF; nr++) {
-		if (!db->sgbuf[nr]) {
-			p = (void *)get_zeroed_page(GFP_KERNEL);
-			if (!p)
-				return -ENOMEM;
-			db->sgbuf[nr] = p;
-			SetPageReserved(virt_to_page(p));
-		}
-		memset(db->sgbuf[nr], AFMT_ISUNSIGNED(db->format) ? 0x80 : 0, PAGE_SIZE);
-		if ((nr << PAGE_SHIFT) >= db->dmasize)
-			break;
-	}
-	db->bufsize = nr << PAGE_SHIFT;
-	db->ready = 1;
-	dprintk((KERN_DEBUG "usbaudio: dmabuf_init bytepersec %d bufs %d ossfragshift %d ossmaxfrags %d "
-	         "fragshift %d fragsize %d numfrag %d dmasize %d bufsize %d fmt 0x%x srate %d\n",
-	         bytepersec, bufs, db->ossfragshift, db->ossmaxfrags, db->fragshift, db->fragsize,
-	         db->numfrag, db->dmasize, db->bufsize, db->format, db->srate));
-	return 0;
-}
-
-static int dmabuf_mmap(struct vm_area_struct *vma, struct dmabuf *db, unsigned long start, unsigned long size, pgprot_t prot)
-{
-	unsigned int nr;
-
-	if (!db->ready || db->mapped || (start | size) & (PAGE_SIZE-1) || size > db->bufsize)
-		return -EINVAL;
-	size >>= PAGE_SHIFT;
-	for(nr = 0; nr < size; nr++)
-		if (!db->sgbuf[nr])
-			return -EINVAL;
-	db->mapped = 1;
-	for(nr = 0; nr < size; nr++) {
-		unsigned long pfn;
-
-		pfn = virt_to_phys(db->sgbuf[nr]) >> PAGE_SHIFT;
-		if (remap_pfn_range(vma, start, pfn, PAGE_SIZE, prot))
-			return -EAGAIN;
-		start += PAGE_SIZE;
-	}
-	return 0;
-}
-
-static void dmabuf_copyin(struct dmabuf *db, const void *buffer, unsigned int size)
-{
-	unsigned int pgrem, rem;
-
-	db->total_bytes += size;
-	for (;;) {
-		if (size <= 0)
-			return;
-		pgrem = ((~db->wrptr) & (PAGE_SIZE-1)) + 1;
-		if (pgrem > size)
-			pgrem = size;
-		rem = db->dmasize - db->wrptr;
-		if (pgrem > rem)
-			pgrem = rem;
-		memcpy((db->sgbuf[db->wrptr >> PAGE_SHIFT]) + (db->wrptr & (PAGE_SIZE-1)), buffer, pgrem);
-		size -= pgrem;
-		buffer += pgrem;
-		db->wrptr += pgrem;
-		if (db->wrptr >= db->dmasize)
-			db->wrptr = 0;
-	}
-}
-
-static void dmabuf_copyout(struct dmabuf *db, void *buffer, unsigned int size)
-{
-	unsigned int pgrem, rem;
-
-	db->total_bytes += size;
-	for (;;) {
-		if (size <= 0)
-			return;
-		pgrem = ((~db->rdptr) & (PAGE_SIZE-1)) + 1;
-		if (pgrem > size)
-			pgrem = size;
-		rem = db->dmasize - db->rdptr;
-		if (pgrem > rem)
-			pgrem = rem;
-		memcpy(buffer, (db->sgbuf[db->rdptr >> PAGE_SHIFT]) + (db->rdptr & (PAGE_SIZE-1)), pgrem);
-		size -= pgrem;
-		buffer += pgrem;
-		db->rdptr += pgrem;
-		if (db->rdptr >= db->dmasize)
-			db->rdptr = 0;
-	}
-}
-
-static int dmabuf_copyin_user(struct dmabuf *db, unsigned int ptr, const void __user *buffer, unsigned int size)
-{
-	unsigned int pgrem, rem;
-
-	if (!db->ready || db->mapped)
-		return -EINVAL;
-	for (;;) {
-		if (size <= 0)
-			return 0;
-		pgrem = ((~ptr) & (PAGE_SIZE-1)) + 1;
-		if (pgrem > size)
-			pgrem = size;
-		rem = db->dmasize - ptr;
-		if (pgrem > rem)
-			pgrem = rem;
-		if (copy_from_user((db->sgbuf[ptr >> PAGE_SHIFT]) + (ptr & (PAGE_SIZE-1)), buffer, pgrem))
-			return -EFAULT;
-		size -= pgrem;
-		buffer += pgrem;
-		ptr += pgrem;
-		if (ptr >= db->dmasize)
-			ptr = 0;
-	}
-}
-
-static int dmabuf_copyout_user(struct dmabuf *db, unsigned int ptr, void __user *buffer, unsigned int size)
-{
-	unsigned int pgrem, rem;
-
-	if (!db->ready || db->mapped)
-		return -EINVAL;
-	for (;;) {
-		if (size <= 0)
-			return 0;
-		pgrem = ((~ptr) & (PAGE_SIZE-1)) + 1;
-		if (pgrem > size)
-			pgrem = size;
-		rem = db->dmasize - ptr;
-		if (pgrem > rem)
-			pgrem = rem;
-		if (copy_to_user(buffer, (db->sgbuf[ptr >> PAGE_SHIFT]) + (ptr & (PAGE_SIZE-1)), pgrem))
-			return -EFAULT;
-		size -= pgrem;
-		buffer += pgrem;
-		ptr += pgrem;
-		if (ptr >= db->dmasize)
-			ptr = 0;
-	}
-}
-
-/* --------------------------------------------------------------------- */
-/*
- * USB I/O code. We do sample format conversion if necessary
- */
-
-static void usbin_stop(struct usb_audiodev *as)
-{
-	struct usbin *u = &as->usbin;
-	unsigned long flags;
-	unsigned int i, notkilled = 1;
-
-	spin_lock_irqsave(&as->lock, flags);
-	u->flags &= ~FLG_RUNNING;
-	i = u->flags;
-	spin_unlock_irqrestore(&as->lock, flags);
-	while (i & (FLG_URB0RUNNING|FLG_URB1RUNNING|FLG_SYNC0RUNNING|FLG_SYNC1RUNNING)) {
-		if (notkilled)
-			schedule_timeout_interruptible(1);
-		else
-			schedule_timeout_uninterruptible(1);
-		spin_lock_irqsave(&as->lock, flags);
-		i = u->flags;
-		spin_unlock_irqrestore(&as->lock, flags);
-		if (notkilled && signal_pending(current)) {
-			if (i & FLG_URB0RUNNING)
-				usb_kill_urb(u->durb[0].urb);
-			if (i & FLG_URB1RUNNING)
-				usb_kill_urb(u->durb[1].urb);
-			if (i & FLG_SYNC0RUNNING)
-				usb_kill_urb(u->surb[0].urb);
-			if (i & FLG_SYNC1RUNNING)
-				usb_kill_urb(u->surb[1].urb);
-			notkilled = 0;
-		}
-	}
-	set_current_state(TASK_RUNNING);
-	kfree(u->durb[0].urb->transfer_buffer);
-	kfree(u->durb[1].urb->transfer_buffer);
-	kfree(u->surb[0].urb->transfer_buffer);
-	kfree(u->surb[1].urb->transfer_buffer);
-	u->durb[0].urb->transfer_buffer = u->durb[1].urb->transfer_buffer = 
-		u->surb[0].urb->transfer_buffer = u->surb[1].urb->transfer_buffer = NULL;
-}
-
-static inline void usbin_release(struct usb_audiodev *as)
-{
-	usbin_stop(as);
-}
-
-static void usbin_disc(struct usb_audiodev *as)
-{
-	struct usbin *u = &as->usbin;
-
-	unsigned long flags;
-
-	spin_lock_irqsave(&as->lock, flags);
-	u->flags &= ~(FLG_RUNNING | FLG_CONNECTED);
-	spin_unlock_irqrestore(&as->lock, flags);
-	usbin_stop(as);
-}
-
-static void conversion(const void *ibuf, unsigned int ifmt, void *obuf, unsigned int ofmt, void *tmp, unsigned int scnt)
-{
-	unsigned int cnt, i;
-	__s16 *sp, *sp2, s;
-	unsigned char *bp;
-
-	cnt = scnt;
-	if (AFMT_ISSTEREO(ifmt))
-		cnt <<= 1;
-	sp = ((__s16 *)tmp) + cnt;
-	switch (ifmt & ~AFMT_STEREO) {
-	case AFMT_U8:
-		for (bp = ((unsigned char *)ibuf)+cnt, i = 0; i < cnt; i++) {
-			bp--;
-			sp--;
-			*sp = (*bp ^ 0x80) << 8;
-		}
-		break;
-			
-	case AFMT_S8:
-		for (bp = ((unsigned char *)ibuf)+cnt, i = 0; i < cnt; i++) {
-			bp--;
-			sp--;
-			*sp = *bp << 8;
-		}
-		break;
-		
-	case AFMT_U16_LE:
-		for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-			bp -= 2;
-			sp--;
-			*sp = (bp[0] | (bp[1] << 8)) ^ 0x8000;
-		}
-		break;
-
-	case AFMT_U16_BE:
-		for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-			bp -= 2;
-			sp--;
-			*sp = (bp[1] | (bp[0] << 8)) ^ 0x8000;
-		}
-		break;
-
-	case AFMT_S16_LE:
-		for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-			bp -= 2;
-			sp--;
-			*sp = bp[0] | (bp[1] << 8);
-		}
-		break;
-
-	case AFMT_S16_BE:
-		for (bp = ((unsigned char *)ibuf)+2*cnt, i = 0; i < cnt; i++) {
-			bp -= 2;
-			sp--;
-			*sp = bp[1] | (bp[0] << 8);
-		}
-		break;
-	}
-	if (!AFMT_ISSTEREO(ifmt) && AFMT_ISSTEREO(ofmt)) {
-		/* expand from mono to stereo */
-		for (sp = ((__s16 *)tmp)+scnt, sp2 = ((__s16 *)tmp)+2*scnt, i = 0; i < scnt; i++) {
-			sp--;
-			sp2 -= 2;
-			sp2[0] = sp2[1] = sp[0];
-		}
-	}
-	if (AFMT_ISSTEREO(ifmt) && !AFMT_ISSTEREO(ofmt)) {
-		/* contract from stereo to mono */
-		for (sp = sp2 = ((__s16 *)tmp), i = 0; i < scnt; i++, sp++, sp2 += 2)
-			sp[0] = (sp2[0] + sp2[1]) >> 1;
-	}
-	cnt = scnt;
-	if (AFMT_ISSTEREO(ofmt))
-		cnt <<= 1;
-	sp = ((__s16 *)tmp);
-	bp = ((unsigned char *)obuf);
-	switch (ofmt & ~AFMT_STEREO) {
-	case AFMT_U8:
-		for (i = 0; i < cnt; i++, sp++, bp++)
-			*bp = (*sp >> 8) ^ 0x80;
-		break;
-
-	case AFMT_S8:
-		for (i = 0; i < cnt; i++, sp++, bp++)
-			*bp = *sp >> 8;
-		break;
-
-	case AFMT_U16_LE:
-		for (i = 0; i < cnt; i++, sp++, bp += 2) {
-			s = *sp;
-			bp[0] = s;
-			bp[1] = (s >> 8) ^ 0x80;
-		}
-		break;
-
-	case AFMT_U16_BE:
-		for (i = 0; i < cnt; i++, sp++, bp += 2) {
-			s = *sp;
-			bp[1] = s;
-			bp[0] = (s >> 8) ^ 0x80;
-		}
-		break;
-
-	case AFMT_S16_LE:
-		for (i = 0; i < cnt; i++, sp++, bp += 2) {
-			s = *sp;
-			bp[0] = s;
-			bp[1] = s >> 8;
-		}
-		break;
-
-	case AFMT_S16_BE:
-		for (i = 0; i < cnt; i++, sp++, bp += 2) {
-			s = *sp;
-			bp[1] = s;
-			bp[0] = s >> 8;
-		}
-		break;
-	}
-	
-}
-
-static void usbin_convert(struct usbin *u, unsigned char *buffer, unsigned int samples)
-{
-	union {
-		__s16 s[64];
-		unsigned char b[0];
-	} tmp;
-	unsigned int scnt, maxs, ufmtsh, dfmtsh;
-
-	ufmtsh = AFMT_BYTESSHIFT(u->format);
-	dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
-	maxs = (AFMT_ISSTEREO(u->dma.format | u->format)) ? 32 : 64;
-	while (samples > 0) {
-		scnt = samples;
-		if (scnt > maxs)
-			scnt = maxs;
-		conversion(buffer, u->format, tmp.b, u->dma.format, tmp.b, scnt);
-		dmabuf_copyin(&u->dma, tmp.b, scnt << dfmtsh);
-		buffer += scnt << ufmtsh;
-		samples -= scnt;
-	}
-}		
-
-static int usbin_prepare_desc(struct usbin *u, struct urb *urb)
-{
-	unsigned int i, maxsize, offs;
-
-	maxsize = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
-	//printk(KERN_DEBUG "usbin_prepare_desc: maxsize %d freq 0x%x format 0x%x\n", maxsize, u->freqn, u->format);
-	for (i = offs = 0; i < DESCFRAMES; i++, offs += maxsize) {
-		urb->iso_frame_desc[i].length = maxsize;
-		urb->iso_frame_desc[i].offset = offs;
-	}
-	urb->interval = 1;
-	return 0;
-}
-
-/*
- * return value: 0 if descriptor should be restarted, -1 otherwise
- * convert sample format on the fly if necessary
- */
-static int usbin_retire_desc(struct usbin *u, struct urb *urb)
-{
-	unsigned int i, ufmtsh, dfmtsh, err = 0, cnt, scnt, dmafree;
-	unsigned char *cp;
-
-	ufmtsh = AFMT_BYTESSHIFT(u->format);
-	dfmtsh = AFMT_BYTESSHIFT(u->dma.format);
-	for (i = 0; i < DESCFRAMES; i++) {
-		cp = ((unsigned char *)urb->transfer_buffer) + urb->iso_frame_desc[i].offset;
-		if (urb->iso_frame_desc[i].status) {
-			dprintk((KERN_DEBUG "usbin_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));
-			continue;
-		}
-		scnt = urb->iso_frame_desc[i].actual_length >> ufmtsh;
-		if (!scnt)
-			continue;
-		cnt = scnt << dfmtsh;
-		if (!u->dma.mapped) {
-			dmafree = u->dma.dmasize - u->dma.count;
-			if (cnt > dmafree) {
-				scnt = dmafree >> dfmtsh;
-				cnt = scnt << dfmtsh;
-				err++;
-			}
-		}
-		u->dma.count += cnt;
-		if (u->format == u->dma.format) {
-			/* we do not need format conversion */
-			dprintk((KERN_DEBUG "usbaudio: no sample format conversion\n"));
-			dmabuf_copyin(&u->dma, cp, cnt);
-		} else {
-			/* we need sampling format conversion */
-			dprintk((KERN_DEBUG "usbaudio: sample format conversion %x != %x\n", u->format, u->dma.format));
-			usbin_convert(u, cp, scnt);
-		}
-	}
-	if (err)
-		u->dma.error++;
-	if (u->dma.count >= (signed)u->dma.fragsize)
-		wake_up(&u->dma.wait);
-	return err ? -1 : 0;
-}
-
-static void usbin_completed(struct urb *urb, struct pt_regs *regs)
-{
-	struct usb_audiodev *as = (struct usb_audiodev *)urb->context;
-	struct usbin *u = &as->usbin;
-	unsigned long flags;
-	unsigned int mask;
-	int suret = 0;
-
-#if 0
-	printk(KERN_DEBUG "usbin_completed: status %d errcnt %d flags 0x%x\n", urb->status, urb->error_count, u->flags);
-#endif
-	if (urb == u->durb[0].urb)
-		mask = FLG_URB0RUNNING;
-	else if (urb == u->durb[1].urb)
-		mask = FLG_URB1RUNNING;
-	else {
-		mask = 0;
-		printk(KERN_ERR "usbin_completed: panic: unknown URB\n");
-	}
-	urb->dev = as->state->usbdev;
-	spin_lock_irqsave(&as->lock, flags);
-	if (!usbin_retire_desc(u, urb) &&
-	    u->flags & FLG_RUNNING &&
-	    !usbin_prepare_desc(u, urb) && 
-	    (suret = usb_submit_urb(urb, GFP_ATOMIC)) == 0) {
-		u->flags |= mask;
-	} else {
-		u->flags &= ~(mask | FLG_RUNNING);
-		wake_up(&u->dma.wait);
-		printk(KERN_DEBUG "usbin_completed: descriptor not restarted (usb_submit_urb: %d)\n", suret);
-	}
-	spin_unlock_irqrestore(&as->lock, flags);
-}
-
-/*
- * we output sync data
- */
-static int usbin_sync_prepare_desc(struct usbin *u, struct urb *urb)
-{
-	unsigned char *cp = urb->transfer_buffer;
-	unsigned int i, offs;
-	
-	for (i = offs = 0; i < SYNCFRAMES; i++, offs += 3, cp += 3) {
-		urb->iso_frame_desc[i].length = 3;
-		urb->iso_frame_desc[i].offset = offs;
-		cp[0] = u->freqn;
-		cp[1] = u->freqn >> 8;
-		cp[2] = u->freqn >> 16;
-	}
-	urb->interval = 1;
-	return 0;
-}
-
-/*
- * return value: 0 if descriptor should be restarted, -1 otherwise
- */
-static int usbin_sync_retire_desc(struct usbin *u, struct urb *urb)
-{
-	unsigned int i;
-	
-	for (i = 0; i < SYNCFRAMES; i++)
-		if (urb->iso_frame_desc[0].status)
-			dprintk((KERN_DEBUG "usbin_sync_retire_desc: frame %u status %d\n", i, urb->iso_frame_desc[i].status));