[MIPS] Remove IT8172-based platforms, ITE 8172G and Globespan IVR support.

As per feature-removal-schedule.txt.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 0 insertions, 2261 deletions

diff --git a/sound/oss/ite8172.c b/sound/oss/ite8172.c
deleted file mode 100644
index 68aab3605d74..000000000000
--- a/sound/oss/ite8172.c
+++ /dev/null
@@ -1,2261 +0,0 @@
-/*
- *      ite8172.c  --  ITE IT8172G Sound Driver.
- *
- * Copyright 2001 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- *         	stevel@mvista.com or source@mvista.com
- *
- *  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  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
- *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
- *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
- *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
- *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *  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.,
- *  675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *
- * Module command line parameters:
- *
- *  Supported devices:
- *  /dev/dsp    standard OSS /dev/dsp device
- *  /dev/mixer  standard OSS /dev/mixer device
- *
- * Notes:
- *
- *  1. Much of the OSS buffer allocation, ioctl's, and mmap'ing are
- *     taken, slightly modified or not at all, from the ES1371 driver,
- *     so refer to the credits in es1371.c for those. The rest of the
- *     code (probe, open, read, write, the ISR, etc.) is new.
- *  2. The following support is untested:
- *      * Memory mapping the audio buffers, and the ioctl controls that go
- *        with it.
- *      * S/PDIF output.
- *      * I2S support.
- *  3. The following is not supported:
- *      * legacy audio mode.
- *  4. Support for volume button interrupts is implemented but doesn't
- *     work yet.
- *
- *  Revision history
- *    02.08.2001  Initial release
- *    06.22.2001  Added I2S support
- *    07.30.2003  Removed initialisation to zero for static variables
- *		   (spdif[NR_DEVICE], i2s_fmt[NR_DEVICE], and devindex)
- */
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/delay.h>
-#include <linux/sound.h>
-#include <linux/slab.h>
-#include <linux/soundcard.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/poll.h>
-#include <linux/bitops.h>
-#include <linux/proc_fs.h>
-#include <linux/spinlock.h>
-#include <linux/smp_lock.h>
-#include <linux/ac97_codec.h>
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/uaccess.h>
-#include <asm/it8172/it8172.h>
-
-/* --------------------------------------------------------------------- */
-
-#undef OSS_DOCUMENTED_MIXER_SEMANTICS
-#define IT8172_DEBUG
-#undef IT8172_VERBOSE_DEBUG
-#define DBG(x) {}
-
-#define IT8172_MODULE_NAME "IT8172 audio"
-#define PFX IT8172_MODULE_NAME
-
-#ifdef IT8172_DEBUG
-#define dbg(format, arg...) printk(KERN_DEBUG PFX ": " format "\n" , ## arg)
-#else
-#define dbg(format, arg...) do {} while (0)
-#endif
-#define err(format, arg...) printk(KERN_ERR PFX ": " format "\n" , ## arg)
-#define info(format, arg...) printk(KERN_INFO PFX ": " format "\n" , ## arg)
-#define warn(format, arg...) printk(KERN_WARNING PFX ": " format "\n" , ## arg)
-
-
-#define IT8172_MODULE_NAME "IT8172 audio"
-#define PFX IT8172_MODULE_NAME
-
-#ifdef IT8172_DEBUG
-#define dbg(format, arg...) printk(KERN_DEBUG PFX ": " format "\n" , ## arg)
-#else
-#define dbg(format, arg...) do {} while (0)
-#endif
-#define err(format, arg...) printk(KERN_ERR PFX ": " format "\n" , ## arg)
-#define info(format, arg...) printk(KERN_INFO PFX ": " format "\n" , ## arg)
-#define warn(format, arg...) printk(KERN_WARNING PFX ": " format "\n" , ## arg)
-
-
-static const unsigned sample_shift[] = { 0, 1, 1, 2 };
-
-
-/*
- * Audio Controller register bit definitions follow. See
- * include/asm/it8172/it8172.h for register offsets.
- */
-
-/* PCM Out Volume Reg */
-#define PCMOV_PCMOM	(1<<15)	/* PCM Out Mute default 1: mute */
-#define	PCMOV_PCMRCG_BIT 8	/* PCM Right channel Gain */
-#define	PCMOV_PCMRCG_MASK (0x1f<<PCMOV_PCMRCG_BIT)
-#define PCMOV_PCMLCG_BIT 0	/* PCM Left channel gain  */
-#define PCMOV_PCMLCG_MASK 0x1f
-
-/* FM Out Volume Reg */
-#define FMOV_FMOM       (1<<15)	/* FM Out Mute default 1: mute */
-#define	FMOV_FMRCG_BIT	8	/* FM Right channel Gain */
-#define	FMOV_FMRCG_MASK (0x1f<<FMOV_FMRCG_BIT)
-#define FMOV_FMLCG_BIT	0	/* FM Left channel gain  */
-#define FMOV_FMLCG_MASK 0x1f
-
-/* I2S Out Volume Reg */
-#define I2SV_I2SOM	 (1<<15) /* I2S Out Mute default 1: mute */
-#define	I2SV_I2SRCG_BIT	 8	 /* I2S Right channel Gain */
-#define	I2SV_I2SRCG_MASK (0x1f<<I2SV_I2SRCG_BIT)
-#define I2SV_I2SLCG_BIT	 0	 /* I2S Left channel gain  */
-#define I2SV_I2SLCG_MASK 0x1f
-
-/* Digital Recording Source Select Reg */
-#define	DRSS_BIT   0
-#define	DRSS_MASK  0x07
-#define   DRSS_AC97_PRIM 0
-#define   DRSS_FM        1
-#define   DRSS_I2S       2
-#define   DRSS_PCM       3
-#define   DRSS_AC97_SEC  4
-
-/* Playback/Capture Channel Control Registers */
-#define	CC_SM	        (1<<15)	/* Stereo, Mone 0: mono 1: stereo */
-#define	CC_DF	        (1<<14)	/* Data Format 0: 8 bit 1: 16 bit */
-#define CC_FMT_BIT      14
-#define CC_FMT_MASK     (0x03<<CC_FMT_BIT)
-#define CC_CF_BIT       12      /* Channel format (Playback only) */
-#define CC_CF_MASK      (0x03<<CC_CF_BIT)
-#define	  CC_CF_2	0
-#define   CC_CF_4	(1<<CC_CF_BIT)
-#define   CC_CF_6	(2<<CC_CF_BIT)
-#define CC_SR_BIT       8       /* sample Rate */
-#define CC_SR_MASK      (0x0f<<CC_SR_BIT)
-#define	  CC_SR_5500	0
-#define	  CC_SR_8000	(1<<CC_SR_BIT)
-#define	  CC_SR_9600	(2<<CC_SR_BIT)
-#define	  CC_SR_11025	(3<<CC_SR_BIT)
-#define	  CC_SR_16000	(4<<CC_SR_BIT)
-#define	  CC_SR_19200	(5<<CC_SR_BIT)
-#define	  CC_SR_22050	(6<<CC_SR_BIT)
-#define	  CC_SR_32000	(7<<CC_SR_BIT)
-#define	  CC_SR_38400	(8<<CC_SR_BIT)
-#define	  CC_SR_44100	(9<<CC_SR_BIT)
-#define	  CC_SR_48000	(10<<CC_SR_BIT)
-#define	CC_CSP	        (1<<7)	/* Channel stop 
-				 * 0: End of Current buffer
-				 * 1: Immediately stop when rec stop */
-#define CC_CP	        (1<<6)	/* Channel pause 0: normal, 1: pause */
-#define	CC_CA	        (1<<5)	/* Channel Action 0: Stop , 1: start */
-#define	CC_CB2L         (1<<2)	/* Cur. buf. 2 xfr is last 0: No, 1: Yes */
-#define CC_CB1L         (1<<1)	/* Cur. buf. 1 xfr is last 0: No, 1: Yes */
-#define CC_DE	        1	/* DFC/DFIFO Data Empty 1: empty, 0: not empty
-				 * (Playback only)
-				 */
-
-/* Codec Control Reg */
-#define CODECC_GME	(1<<9)	/* AC97 GPIO Mode enable */
-#define	CODECC_ATM	(1<<8)	/* AC97 ATE test mode 0: test 1: normal */
-#define	CODECC_WR	(1<<6)	/* AC97 Warn reset 1: warm reset , 0: Normal */
-#define	CODECC_CR	(1<<5)	/* AC97 Cold reset 1: Cold reset , 0: Normal */
-
-
-/* I2S Control Reg	*/
-#define	I2SMC_SR_BIT	 6	/* I2S Sampling rate 
-				 * 00: 48KHz, 01: 44.1 KHz, 10: 32 32 KHz */
-#define	I2SMC_SR_MASK    (0x03<<I2SMC_SR_BIT)
-#define	  I2SMC_SR_48000 0
-#define	  I2SMC_SR_44100 (1<<I2SMC_SR_BIT)
-#define	  I2SMC_SR_32000 (2<<I2SMC_SR_BIT)
-#define	I2SMC_SRSS	 (1<<5)	/* Sample Rate Source Select 1:S/W, 0: H/W */
-#define I2SMC_I2SF_BIT	 0	/* I2S Format */
-#define I2SMC_I2SF_MASK  0x03
-#define   I2SMC_I2SF_DAC 0
-#define   I2SMC_I2SF_ADC 2
-#define   I2SMC_I2SF_I2S 3
-
-
-/* Volume up, Down, Mute */
-#define	VS_VMP	(1<<2)	/* Volume mute 1: pushed, 0: not */
-#define	VS_VDP	(1<<1)	/* Volume Down 1: pushed, 0: not */
-#define VS_VUP	1	/* Volime Up 1: pushed, 0: not */
-
-/* SRC, Mixer test control/DFC status reg */
-#define SRCS_DPUSC      (1<<5)	/* DFC Playback underrun Status/clear */
-#define	SRCS_DCOSC	(1<<4)	/* DFC Capture Overrun Status/clear */
-#define SRCS_SIS	(1<<3)	/* SRC input select 1: Mixer, 0: Codec I/F */
-#define SRCS_CDIS_BIT	0	/* Codec Data Input Select */
-#define SRCS_CDIS_MASK  0x07
-#define   SRCS_CDIS_MIXER 0
-#define   SRCS_CDIS_PCM   1
-#define   SRCS_CDIS_I2S   2
-#define   SRCS_CDIS_FM    3
-#define   SRCS_CDIS_DFC   4
-
-
-/* Codec Index Reg command Port */
-#define CIRCP_CID_BIT   10
-#define CIRCP_CID_MASK  (0x03<<CIRCP_CID_BIT)
-#define CIRCP_CPS	(1<<9)	/* Command Port Status 0: ready, 1: busy */
-#define	CIRCP_DPVF	(1<<8)	/* Data Port Valid Flag 0: invalis, 1: valid */
-#define CIRCP_RWC	(1<<7)	/* Read/write command */
-#define CIRCP_CIA_BIT   0
-#define CIRCP_CIA_MASK  0x007F	/* Codec Index Address */
-
-/* Test Mode Control/Test group Select Control */
-
-/* General Control Reg */
-#define GC_VDC_BIT	6	/* Volume Division Control */
-#define GC_VDC_MASK     (0x03<<GC_VDC_BIT)
-#define   GC_VDC_NONE   0
-#define   GC_VDC_DIV2   (1<<GC_VDC_BIT)
-#define   GC_VDC_DIV4   (2<<GC_VDC_BIT)
-#define	GC_SOE	        (1<<2)	/* S/PDIF Output enable */
-#define	GC_SWR	        1	/* Software warn reset */
-
-/* Interrupt mask Control Reg */
-#define	IMC_VCIM	(1<<6)	/* Volume CNTL interrupt mask */
-#define	IMC_CCIM	(1<<1)	/* Capture Chan. iterrupt mask */
-#define	IMC_PCIM	1	/* Playback Chan. interrupt mask */
-
-/* Interrupt status/clear reg */
-#define	ISC_VCI	        (1<<6)	/* Volume CNTL interrupt 1: clears */
-#define	ISC_CCI	        (1<<1)	/* Capture Chan. interrupt 1: clears  */
-#define	ISC_PCI	        1	/* Playback Chan. interrupt 1: clears */
-
-/* misc stuff */
-#define POLL_COUNT   0x5000
-
-
-/* --------------------------------------------------------------------- */
-
-/*
- * Define DIGITAL1 as the I2S channel, since it is not listed in
- * soundcard.h.
- */
-#define SOUND_MIXER_I2S        SOUND_MIXER_DIGITAL1
-#define SOUND_MASK_I2S         SOUND_MASK_DIGITAL1
-#define SOUND_MIXER_READ_I2S   MIXER_READ(SOUND_MIXER_I2S)
-#define SOUND_MIXER_WRITE_I2S  MIXER_WRITE(SOUND_MIXER_I2S)
-
-/* --------------------------------------------------------------------- */
-
-struct it8172_state {
-	/* list of it8172 devices */
-	struct list_head devs;
-
-	/* the corresponding pci_dev structure */
-	struct pci_dev *dev;
-
-	/* soundcore stuff */
-	int dev_audio;
-
-	/* hardware resources */
-	unsigned long io;
-	unsigned int irq;
-
-	/* PCI ID's */
-	u16 vendor;
-	u16 device;
-	u8 rev; /* the chip revision */
-
-	/* options */
-	int spdif_volume; /* S/PDIF output is enabled if != -1 */
-	int i2s_volume;   /* current I2S out volume, in OSS format */
-	int i2s_recording;/* 1 = recording from I2S, 0 = not */
-    
-#ifdef IT8172_DEBUG
-	/* debug /proc entry */
-	struct proc_dir_entry *ps;
-	struct proc_dir_entry *ac97_ps;
-#endif /* IT8172_DEBUG */
-
-	struct ac97_codec codec;
-
-	unsigned short pcc, capcc;
-	unsigned dacrate, adcrate;
-
-	spinlock_t lock;
-	struct mutex open_mutex;
-	mode_t open_mode;
-	wait_queue_head_t open_wait;
-
-	struct dmabuf {
-		void *rawbuf;
-		dma_addr_t dmaaddr;
-		unsigned buforder;
-		unsigned numfrag;
-		unsigned fragshift;
-		void* nextIn;
-		void* nextOut;
-		int count;
-		int curBufPtr;
-		unsigned total_bytes;
-		unsigned error; /* over/underrun */
-		wait_queue_head_t wait;
-		/* redundant, but makes calculations easier */
-		unsigned fragsize;
-		unsigned dmasize;
-		unsigned fragsamples;
-		/* OSS stuff */
-		unsigned mapped:1;
-		unsigned ready:1;
-		unsigned stopped:1;
-		unsigned ossfragshift;
-		int ossmaxfrags;
-		unsigned subdivision;
-	} dma_dac, dma_adc;
-};
-
-/* --------------------------------------------------------------------- */
-
-static LIST_HEAD(devs);
-
-/* --------------------------------------------------------------------- */
-
-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;
-}
-
-/* --------------------------------------------------------------------- */
-
-static void it8172_delay(int msec)
-{
-	unsigned long tmo;
-	signed long tmo2;
-
-	if (in_interrupt())
-		return;
-    
-	tmo = jiffies + (msec*HZ)/1000;
-	for (;;) {
-		tmo2 = tmo - jiffies;
-		if (tmo2 <= 0)
-			break;
-		schedule_timeout(tmo2);
-	}
-}
-
-
-static unsigned short
-get_compat_rate(unsigned* rate)
-{
-	unsigned rate_out = *rate;
-	unsigned short sr;
-    
-	if (rate_out >= 46050) {
-		sr = CC_SR_48000; rate_out = 48000;
-	} else if (rate_out >= 41250) {
-		sr = CC_SR_44100; rate_out = 44100;
-	} else if (rate_out >= 35200) {
-		sr = CC_SR_38400; rate_out = 38400;
-	} else if (rate_out >= 27025) {
-		sr = CC_SR_32000; rate_out = 32000;
-	} else if (rate_out >= 20625) {
-		sr = CC_SR_22050; rate_out = 22050;
-	} else if (rate_out >= 17600) {
-		sr = CC_SR_19200; rate_out = 19200;
-	} else if (rate_out >= 13513) {
-		sr = CC_SR_16000; rate_out = 16000;
-	} else if (rate_out >= 10313) {
-		sr = CC_SR_11025; rate_out = 11025;
-	} else if (rate_out >= 8800) {
-		sr = CC_SR_9600; rate_out = 9600;
-	} else if (rate_out >= 6750) {
-		sr = CC_SR_8000; rate_out = 8000;
-	} else {
-		sr = CC_SR_5500; rate_out = 5500;
-	}
-
-	*rate = rate_out;
-	return sr;
-}
-
-static void set_adc_rate(struct it8172_state *s, unsigned rate)
-{
-	unsigned long flags;
-	unsigned short sr;
-    
-	sr = get_compat_rate(&rate);
-
-	spin_lock_irqsave(&s->lock, flags);
-	s->capcc &= ~CC_SR_MASK;
-	s->capcc |= sr;
-	outw(s->capcc, s->io+IT_AC_CAPCC);
-	spin_unlock_irqrestore(&s->lock, flags);
-
-	s->adcrate = rate;
-}
-
-
-static void set_dac_rate(struct it8172_state *s, unsigned rate)
-{
-	unsigned long flags;
-	unsigned short sr;
-    
-	sr = get_compat_rate(&rate);
-
-	spin_lock_irqsave(&s->lock, flags);
-	s->pcc &= ~CC_SR_MASK;
-	s->pcc |= sr;
-	outw(s->pcc, s->io+IT_AC_PCC);
-	spin_unlock_irqrestore(&s->lock, flags);
-
-	s->dacrate = rate;
-}
-
-
-/* --------------------------------------------------------------------- */
-
-static u16 rdcodec(struct ac97_codec *codec, u8 addr)
-{
-	struct it8172_state *s = (struct it8172_state *)codec->private_data;
-	unsigned long flags;
-	unsigned short circp, data;
-	int i;
-    
-	spin_lock_irqsave(&s->lock, flags);
-
-	for (i = 0; i < POLL_COUNT; i++)
-		if (!(inw(s->io+IT_AC_CIRCP) & CIRCP_CPS))
-			break;
-	if (i == POLL_COUNT)
-		err("rdcodec: codec ready poll expired!");
-
-	circp = addr & CIRCP_CIA_MASK;
-	circp |= (codec->id << CIRCP_CID_BIT);
-	circp |= CIRCP_RWC; // read command
-	outw(circp, s->io+IT_AC_CIRCP);
-
-	/* now wait for the data */
-	for (i = 0; i < POLL_COUNT; i++)
-		if (inw(s->io+IT_AC_CIRCP) & CIRCP_DPVF)
-			break;
-	if (i == POLL_COUNT)
-		err("rdcodec: read poll expired!");
-
-	data = inw(s->io+IT_AC_CIRDP);
-	spin_unlock_irqrestore(&s->lock, flags);
-
-	return data;
-}
-
-
-static void wrcodec(struct ac97_codec *codec, u8 addr, u16 data)
-{
-	struct it8172_state *s = (struct it8172_state *)codec->private_data;
-	unsigned long flags;
-	unsigned short circp;
-	int i;
-    
-	spin_lock_irqsave(&s->lock, flags);
-
-	for (i = 0; i < POLL_COUNT; i++)
-		if (!(inw(s->io+IT_AC_CIRCP) & CIRCP_CPS))
-			break;
-	if (i == POLL_COUNT)
-		err("wrcodec: codec ready poll expired!");
-
-	circp = addr & CIRCP_CIA_MASK;
-	circp |= (codec->id << CIRCP_CID_BIT);
-	circp &= ~CIRCP_RWC; // write command
-
-	outw(data,  s->io+IT_AC_CIRDP);  // send data first
-	outw(circp, s->io+IT_AC_CIRCP);
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}
-
-
-static void waitcodec(struct ac97_codec *codec)
-{
-	unsigned short temp;
-
-	/* codec_wait is used to wait for a ready state after
-	   an AC97_RESET. */
-	it8172_delay(10);
-
-	temp = rdcodec(codec, 0x26);
-
-	// If power down, power up
-	if (temp & 0x3f00) {
-		// Power on
-		wrcodec(codec, 0x26, 0);
-		it8172_delay(100);
-		// Reread
-		temp = rdcodec(codec, 0x26);
-	}
-    
-	// Check if Codec REF,ANL,DAC,ADC ready***/
-	if ((temp & 0x3f0f) != 0x000f) {
-		err("codec reg 26 status (0x%x) not ready!!", temp);
-		return;
-	}
-}
-
-
-/* --------------------------------------------------------------------- */
-
-static inline void stop_adc(struct it8172_state *s)
-{
-	struct dmabuf* db = &s->dma_adc;
-	unsigned long flags;
-	unsigned char imc;
-    
-	if (db->stopped)
-		return;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	s->capcc &= ~(CC_CA | CC_CP | CC_CB2L | CC_CB1L);
-	s->capcc |= CC_CSP;
-	outw(s->capcc, s->io+IT_AC_CAPCC);
-    
-	// disable capture interrupt
-	imc = inb(s->io+IT_AC_IMC);
-	outb(imc | IMC_CCIM, s->io+IT_AC_IMC);
-
-	db->stopped = 1;
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}	
-
-static inline void stop_dac(struct it8172_state *s)
-{
-	struct dmabuf* db = &s->dma_dac;
-	unsigned long flags;
-	unsigned char imc;
-    
-	if (db->stopped)
-		return;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	s->pcc &= ~(CC_CA | CC_CP | CC_CB2L | CC_CB1L);
-	s->pcc |= CC_CSP;
-	outw(s->pcc, s->io+IT_AC_PCC);
-    
-	// disable playback interrupt
-	imc = inb(s->io+IT_AC_IMC);
-	outb(imc | IMC_PCIM, s->io+IT_AC_IMC);
-
-	db->stopped = 1;
-    
-	spin_unlock_irqrestore(&s->lock, flags);
-}	
-
-static void start_dac(struct it8172_state *s)
-{
-	struct dmabuf* db = &s->dma_dac;
-	unsigned long flags;
-	unsigned char imc;
-	unsigned long buf1, buf2;
-    
-	if (!db->stopped)
-		return;
-    
-	spin_lock_irqsave(&s->lock, flags);
-
-	// reset Buffer 1 and 2 pointers to nextOut and nextOut+fragsize
-	buf1 = virt_to_bus(db->nextOut);
-	buf2 = buf1 + db->fragsize;
-	if (buf2 >= db->dmaaddr + db->dmasize)
-		buf2 -= db->dmasize;
-    
-	outl(buf1, s->io+IT_AC_PCB1STA);
-	outl(buf2, s->io+IT_AC_PCB2STA);
-	db->curBufPtr = IT_AC_PCB1STA;
-    
-	// enable playback interrupt
-	imc = inb(s->io+IT_AC_IMC);
-	outb(imc & ~IMC_PCIM, s->io+IT_AC_IMC);
-
-	s->pcc &= ~(CC_CSP | CC_CP | CC_CB2L | CC_CB1L);
-	s->pcc |= CC_CA;
-	outw(s->pcc, s->io+IT_AC_PCC);
-    
-	db->stopped = 0;
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}	
-
-static void start_adc(struct it8172_state *s)
-{
-	struct dmabuf* db = &s->dma_adc;
-	unsigned long flags;
-	unsigned char imc;
-	unsigned long buf1, buf2;
-    
-	if (!db->stopped)
-		return;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	// reset Buffer 1 and 2 pointers to nextIn and nextIn+fragsize
-	buf1 = virt_to_bus(db->nextIn);
-	buf2 = buf1 + db->fragsize;
-	if (buf2 >= db->dmaaddr + db->dmasize)
-		buf2 -= db->dmasize;
-    
-	outl(buf1, s->io+IT_AC_CAPB1STA);
-	outl(buf2, s->io+IT_AC_CAPB2STA);
-	db->curBufPtr = IT_AC_CAPB1STA;
-
-	// enable capture interrupt
-	imc = inb(s->io+IT_AC_IMC);
-	outb(imc & ~IMC_CCIM, s->io+IT_AC_IMC);
-
-	s->capcc &= ~(CC_CSP | CC_CP | CC_CB2L | CC_CB1L);
-	s->capcc |= CC_CA;
-	outw(s->capcc, s->io+IT_AC_CAPCC);
-    
-	db->stopped = 0;
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}	
-
-/* --------------------------------------------------------------------- */
-
-#define DMABUF_DEFAULTORDER (17-PAGE_SHIFT)
-#define DMABUF_MINORDER 1
-
-static inline void dealloc_dmabuf(struct it8172_state *s, struct dmabuf *db)
-{
-	struct page *page, *pend;
-
-	if (db->rawbuf) {
-		/* undo marking the pages as reserved */
-		pend = virt_to_page(db->rawbuf +
-				    (PAGE_SIZE << db->buforder) - 1);
-		for (page = virt_to_page(db->rawbuf); page <= pend; page++)
-			ClearPageReserved(page);
-		pci_free_consistent(s->dev, PAGE_SIZE << db->buforder,
-				    db->rawbuf, db->dmaaddr);
-	}
-	db->rawbuf = db->nextIn = db->nextOut = NULL;
-	db->mapped = db->ready = 0;
-}
-
-static int prog_dmabuf(struct it8172_state *s, struct dmabuf *db,
-		       unsigned rate, unsigned fmt, unsigned reg)
-{
-	int order;
-	unsigned bytepersec;
-	unsigned bufs;
-	struct page *page, *pend;
-
-	if (!db->rawbuf) {
-		db->ready = db->mapped = 0;
-		for (order = DMABUF_DEFAULTORDER;
-		     order >= DMABUF_MINORDER; order--)
-			if ((db->rawbuf =
-			     pci_alloc_consistent(s->dev,
-						  PAGE_SIZE << order,
-						  &db->dmaaddr)))
-				break;
-		if (!db->rawbuf)
-			return -ENOMEM;
-		db->buforder = order;
-		/* now mark the pages as reserved;
-		   otherwise remap_pfn_range doesn't do what we want */
-		pend = virt_to_page(db->rawbuf +
-				    (PAGE_SIZE << db->buforder) - 1);
-		for (page = virt_to_page(db->rawbuf); page <= pend; page++)
-			SetPageReserved(page);
-	}
-
-	db->count = 0;
-	db->nextIn = db->nextOut = db->rawbuf;
-    
-	bytepersec = rate << sample_shift[fmt];
-	bufs = PAGE_SIZE << db->buforder;
-	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->fragsamples = db->fragsize >> sample_shift[fmt];
-	db->dmasize = db->numfrag << db->fragshift;
-	memset(db->rawbuf, (fmt & (CC_DF>>CC_FMT_BIT)) ? 0 : 0x80, bufs);
-    
-#ifdef IT8172_VERBOSE_DEBUG
-	dbg("rate=%d, fragsize=%d, numfrag=%d, dmasize=%d",
-	    rate, db->fragsize, db->numfrag, db->dmasize);
-#endif
-
-	// set data length register
-	outw(db->fragsize, s->io+reg+2);
-	db->ready = 1;
-
-	return 0;
-}
-
-static inline int prog_dmabuf_adc(struct it8172_state *s)
-{
-	stop_adc(s);
-	return prog_dmabuf(s, &s->dma_adc, s->adcrate,
-			   (s->capcc & CC_FMT_MASK) >> CC_FMT_BIT,
-			   IT_AC_CAPCC);
-}
-
-static inline int prog_dmabuf_dac(struct it8172_state *s)
-{
-	stop_dac(s);
-	return prog_dmabuf(s, &s->dma_dac, s->dacrate,
-			   (s->pcc & CC_FMT_MASK) >> CC_FMT_BIT,
-			   IT_AC_PCC);
-}
-
-
-/* hold spinlock for the following! */
-
-static irqreturn_t it8172_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
-	struct it8172_state *s = (struct it8172_state *)dev_id;
-	struct dmabuf* dac = &s->dma_dac;
-	struct dmabuf* adc = &s->dma_adc;
-	unsigned char isc, vs;
-	unsigned short vol, mute;
-	unsigned long newptr;
-    
-	spin_lock(&s->lock);
-
-	isc = inb(s->io+IT_AC_ISC);
-
-	/* fastpath out, to ease interrupt sharing */
-	if (!(isc & (ISC_VCI | ISC_CCI | ISC_PCI))) {
-		spin_unlock(&s->lock);
-		return IRQ_NONE;
-	}
-    
-	/* clear audio interrupts first */
-	outb(isc | ISC_VCI | ISC_CCI | ISC_PCI, s->io+IT_AC_ISC);
-    
-	/* handle volume button events (ignore if S/PDIF enabled) */
-	if ((isc & ISC_VCI) && s->spdif_volume == -1) {
-		vs = inb(s->io+IT_AC_VS);
-		outb(0, s->io+IT_AC_VS);
-		vol = inw(s->io+IT_AC_PCMOV);
-		mute = vol & PCMOV_PCMOM;
-		vol &= PCMOV_PCMLCG_MASK;
-		if ((vs & VS_VUP) && vol > 0)
-			vol--;
-		if ((vs & VS_VDP) && vol < 0x1f)
-			vol++;
-		vol |= (vol << PCMOV_PCMRCG_BIT);
-		if (vs & VS_VMP)
-			vol |= (mute ^ PCMOV_PCMOM);
-		outw(vol, s->io+IT_AC_PCMOV);
-	}
-    
-	/* update capture pointers */
-	if (isc & ISC_CCI) {
-		if (adc->count > adc->dmasize - adc->fragsize) {
-			// Overrun. Stop ADC and log the error
-			stop_adc(s);
-			adc->error++;
-			dbg("adc overrun");
-		} else {
-			newptr = virt_to_bus(adc->nextIn) + 2*adc->fragsize;
-			if (newptr >= adc->dmaaddr + adc->dmasize)
-				newptr -= adc->dmasize;
-	    
-			outl(newptr, s->io+adc->curBufPtr);
-			adc->curBufPtr = (adc->curBufPtr == IT_AC_CAPB1STA) ?
-				IT_AC_CAPB2STA : IT_AC_CAPB1STA;
-	    
-			adc->nextIn += adc->fragsize;
-			if (adc->nextIn >= adc->rawbuf + adc->dmasize)
-				adc->nextIn -= adc->dmasize;
-	    
-			adc->count += adc->fragsize;
-			adc->total_bytes += adc->fragsize;
-
-			/* wake up anybody listening */
-			if (waitqueue_active(&adc->wait))
-				wake_up_interruptible(&adc->wait);
-		}
-	}
-    
-	/* update playback pointers */
-	if (isc & ISC_PCI) {
-		newptr = virt_to_bus(dac->nextOut) + 2*dac->fragsize;
-		if (newptr >= dac->dmaaddr + dac->dmasize)
-			newptr -= dac->dmasize;
-	
-		outl(newptr, s->io+dac->curBufPtr);
-		dac->curBufPtr = (dac->curBufPtr == IT_AC_PCB1STA) ?
-			IT_AC_PCB2STA : IT_AC_PCB1STA;
-	
-		dac->nextOut += dac->fragsize;
-		if (dac->nextOut >= dac->rawbuf + dac->dmasize)
-			dac->nextOut -= dac->dmasize;
-	
-		dac->count -= dac->fragsize;
-		dac->total_bytes += dac->fragsize;
-
-		/* wake up anybody listening */
-		if (waitqueue_active(&dac->wait))
-			wake_up_interruptible(&dac->wait);
-	
-		if (dac->count <= 0)
-			stop_dac(s);
-	}
-    
-	spin_unlock(&s->lock);
-	return IRQ_HANDLED;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int it8172_open_mixdev(struct inode *inode, struct file *file)
-{
-	int minor = iminor(inode);
-	struct list_head *list;
-	struct it8172_state *s;
-
-	for (list = devs.next; ; list = list->next) {
-		if (list == &devs)
-			return -ENODEV;
-		s = list_entry(list, struct it8172_state, devs);
-		if (s->codec.dev_mixer == minor)
-			break;
-	}
-	file->private_data = s;
-	return nonseekable_open(inode, file);
-}
-
-static int it8172_release_mixdev(struct inode *inode, struct file *file)
-{
-	return 0;
-}
-
-
-static u16
-cvt_ossvol(unsigned int gain)
-{
-	u16 ret;
-    
-	if (gain == 0)
-		return 0;
-    
-	if (gain > 100)
-		gain = 100;
-    
-	ret = (100 - gain + 32) / 4;
-	ret = ret > 31 ? 31 : ret;
-	return ret;
-}
-
-
-static int mixdev_ioctl(struct ac97_codec *codec, unsigned int cmd,
-			unsigned long arg)
-{
-	struct it8172_state *s = (struct it8172_state *)codec->private_data;
-	unsigned int left, right;
-	unsigned long flags;
-	int val;
-	u16 vol;
-    
-	/*
-	 * When we are in S/PDIF mode, we want to disable any analog output so
-	 * we filter the master/PCM channel volume ioctls.
-	 *
-	 * Also filter I2S channel, which AC'97 knows nothing about.
-	 */
-
-	switch (cmd) {
-	case SOUND_MIXER_WRITE_VOLUME:
-		// if not in S/PDIF mode, pass to AC'97
-		if (s->spdif_volume == -1)
-			break;
-		return 0;
-	case SOUND_MIXER_WRITE_PCM:
-		// if not in S/PDIF mode, pass to AC'97
-		if (s->spdif_volume == -1)
-			break;
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		right = ((val >> 8)  & 0xff);
-		left = (val  & 0xff);
-		if (right > 100)
-			right = 100;
-		if (left > 100)
-			left = 100;
-		s->spdif_volume = (right << 8) | left;
-		vol = cvt_ossvol(left);
-		vol |= (cvt_ossvol(right) << PCMOV_PCMRCG_BIT);
-		if (vol == 0)
-			vol = PCMOV_PCMOM; // mute
-		spin_lock_irqsave(&s->lock, flags);
-		outw(vol, s->io+IT_AC_PCMOV);
-		spin_unlock_irqrestore(&s->lock, flags);
-		return put_user(s->spdif_volume, (int *)arg);
-	case SOUND_MIXER_READ_PCM:
-		// if not in S/PDIF mode, pass to AC'97
-		if (s->spdif_volume == -1)
-			break;
-		return put_user(s->spdif_volume, (int *)arg);
-	case SOUND_MIXER_WRITE_I2S:
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		right = ((val >> 8)  & 0xff);
-		left = (val  & 0xff);
-		if (right > 100)
-			right = 100;
-		if (left > 100)
-			left = 100;
-		s->i2s_volume = (right << 8) | left;
-		vol = cvt_ossvol(left);
-		vol |= (cvt_ossvol(right) << I2SV_I2SRCG_BIT);
-		if (vol == 0)
-			vol = I2SV_I2SOM; // mute
-		outw(vol, s->io+IT_AC_I2SV);
-		return put_user(s->i2s_volume, (int *)arg);
-	case SOUND_MIXER_READ_I2S:
-		return put_user(s->i2s_volume, (int *)arg);
-	case SOUND_MIXER_WRITE_RECSRC:
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		if (val & SOUND_MASK_I2S) {
-			s->i2s_recording = 1;
-			outb(DRSS_I2S, s->io+IT_AC_DRSS);
-			return 0;
-		} else {
-			s->i2s_recording = 0;
-			outb(DRSS_AC97_PRIM, s->io+IT_AC_DRSS);
-			// now let AC'97 select record source
-			break;
-		}
-	case SOUND_MIXER_READ_RECSRC:
-		if (s->i2s_recording)
-			return put_user(SOUND_MASK_I2S, (int *)arg);
-		else
-			// let AC'97 report recording source
-			break;
-	}
-
-	return codec->mixer_ioctl(codec, cmd, arg);
-}
-
-static int it8172_ioctl_mixdev(struct inode *inode, struct file *file,
-			       unsigned int cmd, unsigned long arg)
-{
-	struct it8172_state *s = (struct it8172_state *)file->private_data;
-	struct ac97_codec *codec = &s->codec;
-
-	return mixdev_ioctl(codec, cmd, arg);
-}
-
-static /*const*/ struct file_operations it8172_mixer_fops = {
-	.owner		= THIS_MODULE,
-	.llseek		= no_llseek,
-	.ioctl		= it8172_ioctl_mixdev,
-	.open		= it8172_open_mixdev,
-	.release	= it8172_release_mixdev,
-};
-
-/* --------------------------------------------------------------------- */
-
-static int drain_dac(struct it8172_state *s, int nonblock)
-{
-	unsigned long flags;
-	int count, tmo;
-	
-	if (s->dma_dac.mapped || !s->dma_dac.ready || s->dma_dac.stopped)
-		return 0;
-
-	for (;;) {
-		spin_lock_irqsave(&s->lock, flags);
-		count = s->dma_dac.count;
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count <= 0)
-			break;
-		if (signal_pending(current))
-			break;
-		//if (nonblock)
-		//return -EBUSY;
-		tmo = 1000 * count / s->dacrate;
-		tmo >>= sample_shift[(s->pcc & CC_FMT_MASK) >> CC_FMT_BIT];
-		it8172_delay(tmo);
-	}
-	if (signal_pending(current))
-		return -ERESTARTSYS;
-	return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-
-/*
- * Copy audio data to/from user buffer from/to dma buffer, taking care
- * that we wrap when reading/writing the dma buffer. Returns actual byte
- * count written to or read from the dma buffer.
- */
-static int copy_dmabuf_user(struct dmabuf *db, char* userbuf,
-			    int count, int to_user)
-{
-	char* bufptr = to_user ? db->nextOut : db->nextIn;
-	char* bufend = db->rawbuf + db->dmasize;
-	
-	if (bufptr + count > bufend) {
-		int partial = (int)(bufend - bufptr);
-		if (to_user) {
-			if (copy_to_user(userbuf, bufptr, partial))
-				return -EFAULT;
-			if (copy_to_user(userbuf + partial, db->rawbuf,
-					 count - partial))
-				return -EFAULT;
-		} else {
-			if (copy_from_user(bufptr, userbuf, partial))
-				return -EFAULT;
-			if (copy_from_user(db->rawbuf,
-					   userbuf + partial,
-					   count - partial))
-				return -EFAULT;
-		}
-	} else {
-		if (to_user) {
-			if (copy_to_user(userbuf, bufptr, count))
-				return -EFAULT;
-		} else {
-			if (copy_from_user(bufptr, userbuf, count))
-				return -EFAULT;
-		}
-	}
-	
-	return count;
-}
-
-
-static ssize_t it8172_read(struct file *file, char *buffer,
-			   size_t count, loff_t *ppos)
-{
-	struct it8172_state *s = (struct it8172_state *)file->private_data;
-	struct dmabuf *db = &s->dma_adc;
-	ssize_t ret;
-	unsigned long flags;
-	int cnt, remainder, avail;
-
-	if (db->mapped)
-		return -ENXIO;
-	if (!access_ok(VERIFY_WRITE, buffer, count))
-		return -EFAULT;
-	ret = 0;
-
-	while (count > 0) {
-		// wait for samples in capture buffer
-		do {
-			spin_lock_irqsave(&s->lock, flags);
-			if (db->stopped)
-				start_adc(s);
-			avail = db->count;
-			spin_unlock_irqrestore(&s->lock, flags);
-			if (avail <= 0) {
-				if (file->f_flags & O_NONBLOCK) {
-					if (!ret)
-						ret = -EAGAIN;
-					return ret;
-				}
-				interruptible_sleep_on(&db->wait);
-				if (signal_pending(current)) {
-					if (!ret)
-						ret = -ERESTARTSYS;
-					return ret;
-				}
-			}
-		} while (avail <= 0);
-
-		// copy from nextOut to user
-		if ((cnt = copy_dmabuf_user(db, buffer, count > avail ?
-					    avail : count, 1)) < 0) {
-			if (!ret)
-				ret = -EFAULT;
-			return ret;
-		}
-
-		spin_lock_irqsave(&s->lock, flags);
-		db->count -= cnt;
-		spin_unlock_irqrestore(&s->lock, flags);
-
-		db->nextOut += cnt;
-		if (db->nextOut >= db->rawbuf + db->dmasize)
-			db->nextOut -= db->dmasize;	
-
-		count -= cnt;
-		buffer += cnt;
-		ret += cnt;
-	} // while (count > 0)
-
-	/*
-	 * See if the dma buffer count after this read call is
-	 * aligned on a fragsize boundary. If not, read from
-	 * buffer until we reach a boundary, and let's hope this
-	 * is just the last remainder of an audio record. If not
-	 * it means the user is not reading in fragsize chunks, in
-	 * which case it's his/her fault that there are audio gaps
-	 * in their record.
-	 */
-	spin_lock_irqsave(&s->lock, flags);
-	remainder = db->count % db->fragsize;
-	if (remainder) {
-		db->nextOut += remainder;
-		if (db->nextOut >= db->rawbuf + db->dmasize)
-			db->nextOut -= db->dmasize;
-		db->count -= remainder;
-	}
-	spin_unlock_irqrestore(&s->lock, flags);
-
-	return ret;
-}
-
-static ssize_t it8172_write(struct file *file, const char *buffer,
-			    size_t count, loff_t *ppos)
-{
-	struct it8172_state *s = (struct it8172_state *)file->private_data;
-	struct dmabuf *db = &s->dma_dac;
-	ssize_t ret;
-	unsigned long flags;
-	int cnt, remainder, avail;
-
-	if (db->mapped)
-		return -ENXIO;
-	if (!access_ok(VERIFY_READ, buffer, count))
-		return -EFAULT;
-	ret = 0;
-    
-	while (count > 0) {
-		// wait for space in playback buffer
-		do {
-			spin_lock_irqsave(&s->lock, flags);
-			avail = db->dmasize - db->count;
-			spin_unlock_irqrestore(&s->lock, flags);
-			if (avail <= 0) {
-				if (file->f_flags & O_NONBLOCK) {
-					if (!ret)
-						ret = -EAGAIN;
-					return ret;
-				}
-				interruptible_sleep_on(&db->wait);
-				if (signal_pending(current)) {
-					if (!ret)
-						ret = -ERESTARTSYS;
-					return ret;
-				}
-			}
-		} while (avail <= 0);
-	
-		// copy to nextIn
-		if ((cnt = copy_dmabuf_user(db, (char*)buffer,
-					    count > avail ?
-					    avail : count, 0)) < 0) {
-			if (!ret)
-				ret = -EFAULT;
-			return ret;
-		}
-
-		spin_lock_irqsave(&s->lock, flags);
-		db->count += cnt;
-		if (db->stopped)
-			start_dac(s);
-		spin_unlock_irqrestore(&s->lock, flags);
-	
-		db->nextIn += cnt;
-		if (db->nextIn >= db->rawbuf + db->dmasize)
-			db->nextIn -= db->dmasize;
-	
-		count -= cnt;
-		buffer += cnt;
-		ret += cnt;
-	} // while (count > 0)
-	
-	/*
-	 * See if the dma buffer count after this write call is
-	 * aligned on a fragsize boundary. If not, fill buffer
-	 * with silence to the next boundary, and let's hope this
-	 * is just the last remainder of an audio playback. If not
-	 * it means the user is not sending us fragsize chunks, in
-	 * which case it's his/her fault that there are audio gaps
-	 * in their playback.
-	 */
-	spin_lock_irqsave(&s->lock, flags);
-	remainder = db->count % db->fragsize;
-	if (remainder) {
-		int fill_cnt = db->fragsize - remainder;
-		memset(db->nextIn, 0, fill_cnt);
-		db->nextIn += fill_cnt;
-		if (db->nextIn >= db->rawbuf + db->dmasize)
-			db->nextIn -= db->dmasize;
-		db->count += fill_cnt;
-	}
-	spin_unlock_irqrestore(&s->lock, flags);
-
-	return ret;
-}
-
-/* No kernel lock - we have our own spinlock */
-static unsigned int it8172_poll(struct file *file,
-				struct poll_table_struct *wait)
-{
-	struct it8172_state *s = (struct it8172_state *)file->private_data;
-	unsigned long flags;
-	unsigned int mask = 0;
-
-	if (file->f_mode & FMODE_WRITE) {
-		if (!s->dma_dac.ready)
-			return 0;
-		poll_wait(file, &s->dma_dac.wait, wait);
-	}
-	if (file->f_mode & FMODE_READ) {
-		if (!s->dma_adc.ready)
-			return 0;
-		poll_wait(file, &s->dma_adc.wait, wait);
-	}
-	
-	spin_lock_irqsave(&s->lock, flags);
-	if (file->f_mode & FMODE_READ) {
-		if (s->dma_adc.count >= (signed)s->dma_adc.fragsize)
-			mask |= POLLIN | POLLRDNORM;
-	}
-	if (file->f_mode & FMODE_WRITE) {
-		if (s->dma_dac.mapped) {
-			if (s->dma_dac.count >= (signed)s->dma_dac.fragsize) 
-				mask |= POLLOUT | POLLWRNORM;
-		} else {
-			if ((signed)s->dma_dac.dmasize >=
-			    s->dma_dac.count + (signed)s->dma_dac.fragsize)
-				mask |= POLLOUT | POLLWRNORM;
-		}
-	}
-	spin_unlock_irqrestore(&s->lock, flags);
-	return mask;
-}
-
-static int it8172_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	struct it8172_state *s = (struct it8172_state *)file->private_data;
-	struct dmabuf *db;
-	unsigned long size;
-
-	lock_kernel();
-	if (vma->vm_flags & VM_WRITE)
-		db = &s->dma_dac;
-	else if (vma->vm_flags & VM_READ)
-		db = &s->dma_adc;
-	else {
-		unlock_kernel();
-		return -EINVAL;
-	}
-	if (vma->vm_pgoff != 0) {
-		unlock_kernel();
-		return -EINVAL;
-	}
-	size = vma->vm_end - vma->vm_start;
-	if (size > (PAGE_SIZE << db->buforder)) {
-		unlock_kernel();
-		return -EINVAL;
-	}
-	if (remap_pfn_range(vma, vma->vm_start,
-			     virt_to_phys(db->rawbuf) >> PAGE_SHIFT,
-			     size, vma->vm_page_prot)) {
-		unlock_kernel();
-		return -EAGAIN;
-	}
-	db->mapped = 1;
-	unlock_kernel();
-	return 0;
-}
-
-
-#ifdef IT8172_VERBOSE_DEBUG
-static struct ioctl_str_t {
-	unsigned int cmd;
-	const char* str;
-} ioctl_str[] = {
-	{SNDCTL_DSP_RESET, "SNDCTL_DSP_RESET"},
-	{SNDCTL_DSP_SYNC, "SNDCTL_DSP_SYNC"},
-	{SNDCTL_DSP_SPEED, "SNDCTL_DSP_SPEED"},
-	{SNDCTL_DSP_STEREO, "SNDCTL_DSP_STEREO"},
-	{SNDCTL_DSP_GETBLKSIZE, "SNDCTL_DSP_GETBLKSIZE"},
-	{SNDCTL_DSP_SAMPLESIZE, "SNDCTL_DSP_SAMPLESIZE"},
-	{SNDCTL_DSP_CHANNELS, "SNDCTL_DSP_CHANNELS"},
-	{SOUND_PCM_WRITE_CHANNELS, "SOUND_PCM_WRITE_CHANNELS"},
-	{SOUND_PCM_WRITE_FILTER, "SOUND_PCM_WRITE_FILTER"},
-	{SNDCTL_DSP_POST, "SNDCTL_DSP_POST"},
-	{SNDCTL_DSP_SUBDIVIDE, "SNDCTL_DSP_SUBDIVIDE"},
-	{SNDCTL_DSP_SETFRAGMENT, "SNDCTL_DSP_SETFRAGMENT"},
-	{SNDCTL_DSP_GETFMTS, "SNDCTL_DSP_GETFMTS"},
-	{SNDCTL_DSP_SETFMT, "SNDCTL_DSP_SETFMT"},
-	{SNDCTL_DSP_GETOSPACE, "SNDCTL_DSP_GETOSPACE"},
-	{SNDCTL_DSP_GETISPACE, "SNDCTL_DSP_GETISPACE"},
-	{SNDCTL_DSP_NONBLOCK, "SNDCTL_DSP_NONBLOCK"},
-	{SNDCTL_DSP_GETCAPS, "SNDCTL_DSP_GETCAPS"},
-	{SNDCTL_DSP_GETTRIGGER, "SNDCTL_DSP_GETTRIGGER"},
-	{SNDCTL_DSP_SETTRIGGER, "SNDCTL_DSP_SETTRIGGER"},
-	{SNDCTL_DSP_GETIPTR, "SNDCTL_DSP_GETIPTR"},
-	{SNDCTL_DSP_GETOPTR, "SNDCTL_DSP_GETOPTR"},
-	{SNDCTL_DSP_MAPINBUF, "SNDCTL_DSP_MAPINBUF"},
-	{SNDCTL_DSP_MAPOUTBUF, "SNDCTL_DSP_MAPOUTBUF"},
-	{SNDCTL_DSP_SETSYNCRO, "SNDCTL_DSP_SETSYNCRO"},
-	{SNDCTL_DSP_SETDUPLEX, "SNDCTL_DSP_SETDUPLEX"},
-	{SNDCTL_DSP_GETODELAY, "SNDCTL_DSP_GETODELAY"},
-	{SNDCTL_DSP_GETCHANNELMASK, "SNDCTL_DSP_GETCHANNELMASK"},
-	{SNDCTL_DSP_BIND_CHANNEL, "SNDCTL_DSP_BIND_CHANNEL"},
-	{OSS_GETVERSION, "OSS_GETVERSION"},
-	{SOUND_PCM_READ_RATE, "SOUND_PCM_READ_RATE"},
-	{SOUND_PCM_READ_CHANNELS, "SOUND_PCM_READ_CHANNELS"},
-	{SOUND_PCM_READ_BITS, "SOUND_PCM_READ_BITS"},
-	{SOUND_PCM_READ_FILTER, "SOUND_PCM_READ_FILTER"}
-};
-#endif    
-
-static int it8172_ioctl(struct inode *inode, struct file *file,
-			unsigned int cmd, unsigned long arg)
-{
-	struct it8172_state *s = (struct it8172_state *)file->private_data;
-	unsigned long flags;
-	audio_buf_info abinfo;
-	count_info cinfo;
-	int count;
-	int val, mapped, ret, diff;
-
-	mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) ||
-		((file->f_mode & FMODE_READ) && s->dma_adc.mapped);
-
-#ifdef IT8172_VERBOSE_DEBUG
-	for (count=0; count<sizeof(ioctl_str)/sizeof(ioctl_str[0]); count++) {
-		if (ioctl_str[count].cmd == cmd)
-			break;
-	}
-	if (count < sizeof(ioctl_str)/sizeof(ioctl_str[0]))
-		dbg("ioctl %s, arg=0x%08x",
-		    ioctl_str[count].str, (unsigned int)arg);
-	else
-		dbg("ioctl unknown, 0x%x", cmd);
-#endif
-    
-	switch (cmd) {
-	case OSS_GETVERSION:
-		return put_user(SOUND_VERSION, (int *)arg);
-
-	case SNDCTL_DSP_SYNC:
-		if (file->f_mode & FMODE_WRITE)
-			return drain_dac(s, file->f_flags & O_NONBLOCK);
-		return 0;
-		
-	case SNDCTL_DSP_SETDUPLEX:
-		return 0;
-
-	case SNDCTL_DSP_GETCAPS:
-		return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME |
-				DSP_CAP_TRIGGER | DSP_CAP_MMAP, (int *)arg);
-		
-	case SNDCTL_DSP_RESET:
-		if (file->f_mode & FMODE_WRITE) {
-			stop_dac(s);
-			synchronize_irq(s->irq);
-			s->dma_dac.count = s->dma_dac.total_bytes = 0;
-			s->dma_dac.nextIn = s->dma_dac.nextOut =
-				s->dma_dac.rawbuf;
-		}
-		if (file->f_mode & FMODE_READ) {
-			stop_adc(s);
-			synchronize_irq(s->irq);
-			s->dma_adc.count = s->dma_adc.total_bytes = 0;
-			s->dma_adc.nextIn = s->dma_adc.nextOut =
-				s->dma_adc.rawbuf;
-		}
-		return 0;
-
-	case SNDCTL_DSP_SPEED:
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		if (val >= 0) {
-			if (file->f_mode & FMODE_READ) {
-				stop_adc(s);
-				set_adc_rate(s, val);
-				if ((ret = prog_dmabuf_adc(s)))
-					return ret;
-			}
-			if (file->f_mode & FMODE_WRITE) {
-				stop_dac(s);
-				set_dac_rate(s, val);
-				if ((ret = prog_dmabuf_dac(s)))
-					return ret;
-			}
-		}
-		return put_user((file->f_mode & FMODE_READ) ?
-				s->adcrate : s->dacrate, (int *)arg);
-
-	case SNDCTL_DSP_STEREO:
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		if (file->f_mode & FMODE_READ) {
-			stop_adc(s);
-			if (val)
-				s->capcc |= CC_SM;
-			else
-				s->capcc &= ~CC_SM;
-			outw(s->capcc, s->io+IT_AC_CAPCC);
-			if ((ret = prog_dmabuf_adc(s)))
-				return ret;
-		}
-		if (file->f_mode & FMODE_WRITE) {
-			stop_dac(s);
-			if (val)
-				s->pcc |= CC_SM;
-			else
-				s->pcc &= ~CC_SM;
-			outw(s->pcc, s->io+IT_AC_PCC);
-			if ((ret = prog_dmabuf_dac(s)))
-				return ret;
-		}
-		return 0;
-
-	case SNDCTL_DSP_CHANNELS:
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		if (val != 0) {
-			if (file->f_mode & FMODE_READ) {
-				stop_adc(s);
-				if (val >= 2) {
-					val = 2;
-					s->capcc |= CC_SM;
-				}
-				else
-					s->capcc &= ~CC_SM;
-				outw(s->capcc, s->io+IT_AC_CAPCC);
-				if ((ret = prog_dmabuf_adc(s)))
-					return ret;
-			}
-			if (file->f_mode & FMODE_WRITE) {
-				stop_dac(s);
-				switch (val) {
-				case 1:
-					s->pcc &= ~CC_SM;
-					break;
-				case 2:
-					s->pcc |= CC_SM;
-					break;
-				default:
-					// FIX! support multichannel???
-					val = 2;
-					s->pcc |= CC_SM;
-					break;
-				}
-				outw(s->pcc, s->io+IT_AC_PCC);
-				if ((ret = prog_dmabuf_dac(s)))
-					return ret;
-			}
-		}
-		return put_user(val, (int *)arg);
-		
-	case SNDCTL_DSP_GETFMTS: /* Returns a mask */
-		return put_user(AFMT_S16_LE|AFMT_U8, (int *)arg);
-		
-	case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		if (val != AFMT_QUERY) {
-			if (file->f_mode & FMODE_READ) {
-				stop_adc(s);
-				if (val == AFMT_S16_LE)
-					s->capcc |= CC_DF;
-				else {
-					val = AFMT_U8;
-					s->capcc &= ~CC_DF;
-				}
-				outw(s->capcc, s->io+IT_AC_CAPCC);
-				if ((ret = prog_dmabuf_adc(s)))
-					return ret;
-			}
-			if (file->f_mode & FMODE_WRITE) {
-				stop_dac(s);
-				if (val == AFMT_S16_LE)
-					s->pcc |= CC_DF;
-				else {
-					val = AFMT_U8;
-					s->pcc &= ~CC_DF;
-				}
-				outw(s->pcc, s->io+IT_AC_PCC);
-				if ((ret = prog_dmabuf_dac(s)))
-					return ret;
-			}
-		} else {
-			if (file->f_mode & FMODE_READ)
-				val = (s->capcc & CC_DF) ?
-					AFMT_S16_LE : AFMT_U8;
-			else
-				val = (s->pcc & CC_DF) ?
-					AFMT_S16_LE : AFMT_U8;
-		}
-		return put_user(val, (int *)arg);
-		
-	case SNDCTL_DSP_POST:
-		return 0;
-
-	case SNDCTL_DSP_GETTRIGGER:
-		val = 0;
-		spin_lock_irqsave(&s->lock, flags);
-		if (file->f_mode & FMODE_READ && !s->dma_adc.stopped)
-			val |= PCM_ENABLE_INPUT;
-		if (file->f_mode & FMODE_WRITE && !s->dma_dac.stopped)
-			val |= PCM_ENABLE_OUTPUT;
-		spin_unlock_irqrestore(&s->lock, flags);
-		return put_user(val, (int *)arg);
-		
-	case SNDCTL_DSP_SETTRIGGER:
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		if (file->f_mode & FMODE_READ) {
-			if (val & PCM_ENABLE_INPUT)
-				start_adc(s);
-			else
-				stop_adc(s);
-		}
-		if (file->f_mode & FMODE_WRITE) {
-			if (val & PCM_ENABLE_OUTPUT)
-				start_dac(s);
-			else
-				stop_dac(s);
-		}
-		return 0;
-
-	case SNDCTL_DSP_GETOSPACE:
-		if (!(file->f_mode & FMODE_WRITE))
-			return -EINVAL;
-		abinfo.fragsize = s->dma_dac.fragsize;
-		spin_lock_irqsave(&s->lock, flags);
-		count = s->dma_dac.count;
-		if (!s->dma_dac.stopped)
-			count -= (s->dma_dac.fragsize -
-				  inw(s->io+IT_AC_PCDL));
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		abinfo.bytes = s->dma_dac.dmasize - count;
-		abinfo.fragstotal = s->dma_dac.numfrag;
-		abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift;      
-		return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ?
-			-EFAULT : 0;
-
-	case SNDCTL_DSP_GETISPACE:
-		if (!(file->f_mode & FMODE_READ))
-			return -EINVAL;
-		abinfo.fragsize = s->dma_adc.fragsize;
-		spin_lock_irqsave(&s->lock, flags);
-		count = s->dma_adc.count;
-		if (!s->dma_adc.stopped)
-			count += (s->dma_adc.fragsize -
-				  inw(s->io+IT_AC_CAPCDL));
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		abinfo.bytes = count;
-		abinfo.fragstotal = s->dma_adc.numfrag;
-		abinfo.fragments = abinfo.bytes >> s->dma_adc.fragshift;      
-		return copy_to_user((void *)arg, &abinfo, sizeof(abinfo)) ?
-			-EFAULT : 0;
-		
-	case SNDCTL_DSP_NONBLOCK:
-		file->f_flags |= O_NONBLOCK;
-		return 0;
-
-	case SNDCTL_DSP_GETODELAY:
-		if (!(file->f_mode & FMODE_WRITE))
-			return -EINVAL;
-		spin_lock_irqsave(&s->lock, flags);
-		count = s->dma_dac.count;
-		if (!s->dma_dac.stopped)
-			count -= (s->dma_dac.fragsize -
-				  inw(s->io+IT_AC_PCDL));
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		return put_user(count, (int *)arg);
-
-	case SNDCTL_DSP_GETIPTR:
-		if (!(file->f_mode & FMODE_READ))
-			return -EINVAL;
-		spin_lock_irqsave(&s->lock, flags);
-		cinfo.bytes = s->dma_adc.total_bytes;
-		count = s->dma_adc.count;
-		if (!s->dma_adc.stopped) {
-			diff = s->dma_adc.fragsize - inw(s->io+IT_AC_CAPCDL);
-			count += diff;
-			cinfo.bytes += diff;
-			cinfo.ptr = inl(s->io+s->dma_adc.curBufPtr) -
-				s->dma_adc.dmaaddr;
-		} else
-			cinfo.ptr = virt_to_bus(s->dma_adc.nextIn) -
-				s->dma_adc.dmaaddr;
-		if (s->dma_adc.mapped)
-			s->dma_adc.count &= s->dma_adc.fragsize-1;
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		cinfo.blocks = count >> s->dma_adc.fragshift;
-		if (copy_to_user((void *)arg, &cinfo, sizeof(cinfo)))
-			return -EFAULT;
-		return 0;
-
-	case SNDCTL_DSP_GETOPTR:
-		if (!(file->f_mode & FMODE_READ))
-			return -EINVAL;
-		spin_lock_irqsave(&s->lock, flags);
-		cinfo.bytes = s->dma_dac.total_bytes;
-		count = s->dma_dac.count;
-		if (!s->dma_dac.stopped) {
-			diff = s->dma_dac.fragsize - inw(s->io+IT_AC_CAPCDL);
-			count -= diff;
-			cinfo.bytes += diff;
-			cinfo.ptr = inl(s->io+s->dma_dac.curBufPtr) -
-				s->dma_dac.dmaaddr;
-		} else
-			cinfo.ptr = virt_to_bus(s->dma_dac.nextOut) -
-				s->dma_dac.dmaaddr;
-		if (s->dma_dac.mapped)
-			s->dma_dac.count &= s->dma_dac.fragsize-1;
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		cinfo.blocks = count >> s->dma_dac.fragshift;
-		if (copy_to_user((void *)arg, &cinfo, sizeof(cinfo)))
-			return -EFAULT;
-		return 0;
-
-	case SNDCTL_DSP_GETBLKSIZE:
-		if (file->f_mode & FMODE_WRITE)
-			return put_user(s->dma_dac.fragsize, (int *)arg);
-		else
-			return put_user(s->dma_adc.fragsize, (int *)arg);
-
-	case SNDCTL_DSP_SETFRAGMENT:
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		if (file->f_mode & FMODE_READ) {
-			stop_adc(s);
-			s->dma_adc.ossfragshift = val & 0xffff;
-			s->dma_adc.ossmaxfrags = (val >> 16) & 0xffff;
-			if (s->dma_adc.ossfragshift < 4)
-				s->dma_adc.ossfragshift = 4;
-			if (s->dma_adc.ossfragshift > 15)
-				s->dma_adc.ossfragshift = 15;
-			if (s->dma_adc.ossmaxfrags < 4)
-				s->dma_adc.ossmaxfrags = 4;
-			if ((ret = prog_dmabuf_adc(s)))
-				return ret;
-		}
-		if (file->f_mode & FMODE_WRITE) {
-			stop_dac(s);
-			s->dma_dac.ossfragshift = val & 0xffff;
-			s->dma_dac.ossmaxfrags = (val >> 16) & 0xffff;
-			if (s->dma_dac.ossfragshift < 4)
-				s->dma_dac.ossfragshift = 4;
-			if (s->dma_dac.ossfragshift > 15)
-				s->dma_dac.ossfragshift = 15;
-			if (s->dma_dac.ossmaxfrags < 4)
-				s->dma_dac.ossmaxfrags = 4;
-			if ((ret = prog_dmabuf_dac(s)))
-				return ret;
-		}
-		return 0;
-
-	case SNDCTL_DSP_SUBDIVIDE:
-		if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision) ||
-		    (file->f_mode & FMODE_WRITE && s->dma_dac.subdivision))
-			return -EINVAL;
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		if (val != 1 && val != 2 && val != 4)
-			return -EINVAL;
-		if (file->f_mode & FMODE_READ) {
-			stop_adc(s);
-			s->dma_adc.subdivision = val;
-			if ((ret = prog_dmabuf_adc(s)))
-				return ret;
-		}
-		if (file->f_mode & FMODE_WRITE) {
-			stop_dac(s);
-			s->dma_dac.subdivision = val;
-			if ((ret = prog_dmabuf_dac(s)))
-				return ret;
-		}
-		return 0;
-
-	case SOUND_PCM_READ_RATE:
-		return put_user((file->f_mode & FMODE_READ) ?
-				s->adcrate : s->dacrate, (int *)arg);
-
-	case SOUND_PCM_READ_CHANNELS:
-		if (file->f_mode & FMODE_READ)
-			return put_user((s->capcc & CC_SM) ? 2 : 1,
-					(int *)arg);
-		else
-			return put_user((s->pcc & CC_SM) ? 2 : 1,
-					(int *)arg);
-	    
-	case SOUND_PCM_READ_BITS:
-		if (file->f_mode & FMODE_READ)
-			return put_user((s->capcc & CC_DF) ? 16 : 8,
-					(int *)arg);
-		else
-			return put_user((s->pcc & CC_DF) ? 16 : 8,
-					(int *)arg);
-
-	case SOUND_PCM_WRITE_FILTER:
-	case SNDCTL_DSP_SETSYNCRO:
-	case SOUND_PCM_READ_FILTER:
-		return -EINVAL;
-	}
-
-	return mixdev_ioctl(&s->codec, cmd, arg);
-}
-
-
-static int it8172_open(struct inode *inode, struct file *file)
-{
-	int minor = iminor(inode);
-	DECLARE_WAITQUEUE(wait, current);
-	unsigned long flags;
-	struct list_head *list;
-	struct it8172_state *s;
-	int ret;
-    
-#ifdef IT8172_VERBOSE_DEBUG
-	if (file->f_flags & O_NONBLOCK)
-		dbg("%s: non-blocking", __FUNCTION__);
-	else
-		dbg("%s: blocking", __FUNCTION__);
-#endif
-	
-	for (list = devs.next; ; list = list->next) {
-		if (list == &devs)
-			return -ENODEV;
-		s = list_entry(list, struct it8172_state, devs);
-		if (!((s->dev_audio ^ minor) & ~0xf))
-			break;
-	}
-	file->private_data = s;
-	/* wait for device to become free */
-	mutex_lock(&s->open_mutex);
-	while (s->open_mode & file->f_mode) {
-		if (file->f_flags & O_NONBLOCK) {
-			mutex_unlock(&s->open_mutex);
-			return -EBUSY;
-		}
-		add_wait_queue(&s->open_wait, &wait);
-		__set_current_state(TASK_INTERRUPTIBLE);
-		mutex_unlock(&s->open_mutex);
-		schedule();
-		remove_wait_queue(&s->open_wait, &wait);
-		set_current_state(TASK_RUNNING);
-		if (signal_pending(current))
-			return -ERESTARTSYS;
-		mutex_lock(&s->open_mutex);
-	}
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	if (file->f_mode & FMODE_READ) {
-		s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags =
-			s->dma_adc.subdivision = s->dma_adc.total_bytes = 0;
-		s->capcc &= ~(CC_SM | CC_DF);
-		set_adc_rate(s, 8000);
-		if ((minor & 0xf) == SND_DEV_DSP16)
-			s->capcc |= CC_DF;
-		outw(s->capcc, s->io+IT_AC_CAPCC);
-		if ((ret = prog_dmabuf_adc(s))) {
-			spin_unlock_irqrestore(&s->lock, flags);
-			return ret;
-		}
-	}
-	if (file->f_mode & FMODE_WRITE) {
-		s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags =
-			s->dma_dac.subdivision = s->dma_dac.total_bytes = 0;
-		s->pcc &= ~(CC_SM | CC_DF);
-		set_dac_rate(s, 8000);
-		if ((minor & 0xf) == SND_DEV_DSP16)
-			s->pcc |= CC_DF;
-		outw(s->pcc, s->io+IT_AC_PCC);
-		if ((ret = prog_dmabuf_dac(s))) {
-			spin_unlock_irqrestore(&s->lock, flags);
-			return ret;
-		}
-	}
-    
-	spin_unlock_irqrestore(&s->lock, flags);
-
-	s->open_mode |= (file->f_mode & (FMODE_READ | FMODE_WRITE));
-	mutex_unlock(&s->open_mutex);
-	return nonseekable_open(inode, file);
-}
-
-static int it8172_release(struct inode *inode, struct file *file)
-{
-	struct it8172_state *s = (struct it8172_state *)file->private_data;
-
-#ifdef IT8172_VERBOSE_DEBUG
-	dbg("%s", __FUNCTION__);
-#endif
-	lock_kernel();
-	if (file->f_mode & FMODE_WRITE)
-		drain_dac(s, file->f_flags & O_NONBLOCK);
-	mutex_lock(&s->open_mutex);
-	if (file->f_mode & FMODE_WRITE) {
-		stop_dac(s);
-		dealloc_dmabuf(s, &s->dma_dac);
-	}
-	if (file->f_mode & FMODE_READ) {
-		stop_adc(s);
-		dealloc_dmabuf(s, &s->dma_adc);
-	}
-	s->open_mode &= ((~file->f_mode) & (FMODE_READ|FMODE_WRITE));
-	mutex_unlock(&s->open_mutex);
-	wake_up(&s->open_wait);
-	unlock_kernel();
-	return 0;
-}
-
-static /*const*/ struct file_operations it8172_audio_fops = {
-	.owner		= THIS_MODULE,
-	.llseek		= no_llseek,
-	.read		= it8172_read,
-	.write		= it8172_write,
-	.poll		= it8172_poll,
-	.ioctl		= it8172_ioctl,
-	.mmap		= it8172_mmap,
-	.open		= it8172_open,
-	.release	= it8172_release,
-};
-
-
-/* --------------------------------------------------------------------- */
-
-
-/* --------------------------------------------------------------------- */
-
-/*
- * for debugging purposes, we'll create a proc device that dumps the
- * CODEC chipstate
- */
-
-#ifdef IT8172_DEBUG
-static int proc_it8172_dump (char *buf, char **start, off_t fpos,
-			     int length, int *eof, void *data)
-{
-	struct it8172_state *s;
-	int cnt, len = 0;
-
-	if (list_empty(&devs))
-		return 0;
-	s = list_entry(devs.next, struct it8172_state, devs);
-
-	/* print out header */
-	len += sprintf(buf + len, "\n\t\tIT8172 Audio Debug\n\n");
-
-	// print out digital controller state
-	len += sprintf (buf + len, "IT8172 Audio Controller registers\n");
-	len += sprintf (buf + len, "---------------------------------\n");
-	cnt=0;
-	while (cnt < 0x72) {
-		if (cnt == IT_AC_PCB1STA || cnt == IT_AC_PCB2STA ||
-		    cnt == IT_AC_CAPB1STA || cnt == IT_AC_CAPB2STA ||
-		    cnt == IT_AC_PFDP) {
-			len+= sprintf (buf + len, "reg %02x = %08x\n",
-				       cnt, inl(s->io+cnt));
-			cnt += 4;
-		} else {
-			len+= sprintf (buf + len, "reg %02x = %04x\n",
-				       cnt, inw(s->io+cnt));
-			cnt += 2;
-		}
-	}
-    
-	/* print out CODEC state */
-	len += sprintf (buf + len, "\nAC97 CODEC registers\n");
-	len += sprintf (buf + len, "----------------------\n");
-	for (cnt=0; cnt <= 0x7e; cnt = cnt +2)
-		len+= sprintf (buf + len, "reg %02x = %04x\n",
-			       cnt, rdcodec(&s->codec, cnt));
-
-	if (fpos >=len){
-		*start = buf;
-		*eof =1;
-		return 0;
-	}
-	*start = buf + fpos;
-	if ((len -= fpos) > length)
-		return length;
-	*eof =1;
-	return len;
-
-}
-#endif /* IT8172_DEBUG */
-
-/* --------------------------------------------------------------------- */
-
-/* maximum number of devices; only used for command line params */
-#define NR_DEVICE 5
-
-static int spdif[NR_DEVICE];
-static int i2s_fmt[NR_DEVICE];
-
-static unsigned int devindex;
-
-module_param_array(spdif, int, NULL, 0);
-MODULE_PARM_DESC(spdif, "if 1 the S/PDIF digital output is enabled");
-module_param_array(i2s_fmt, int, NULL, 0);
-MODULE_PARM_DESC(i2s_fmt, "the format of I2S");
-
-MODULE_AUTHOR("Monta Vista Software, stevel@mvista.com");
-MODULE_DESCRIPTION("IT8172 Audio Driver");
-
-/* --------------------------------------------------------------------- */
-
-static int __devinit it8172_probe(struct pci_dev *pcidev,
-				  const struct pci_device_id *pciid)
-{
-	struct it8172_state *s;
-	int i, val;
-	unsigned short pcisr, vol;
-	unsigned char legacy, imc;
-	char proc_str[80];
-    
-	if (pcidev->irq == 0) 
-		return -1;
-
-	if (!(s = kmalloc(sizeof(struct it8172_state), GFP_KERNEL))) {
-		err("alloc of device struct failed");
-		return -1;
-	}
-	
-	memset(s, 0, sizeof(struct it8172_state));
-	init_waitqueue_head(&s->dma_adc.wait);
-	init_waitqueue_head(&s->dma_dac.wait);
-	init_waitqueue_head(&s->open_wait);
-	mutex_init(&s->open_mutex);
-	spin_lock_init(&s->lock);
-	s->dev = pcidev;
-	s->io = pci_resource_start(pcidev, 0);
-	s->irq = pcidev->irq;
-	s->vendor = pcidev->vendor;
-	s->device = pcidev->device;
-	pci_read_config_byte(pcidev, PCI_REVISION_ID, &s->rev);
-	s->codec.private_data = s;
-	s->codec.id = 0;
-	s->codec.codec_read = rdcodec;
-	s->codec.codec_write = wrcodec;
-	s->codec.codec_wait = waitcodec;
-
-	if (!request_region(s->io, pci_resource_len(pcidev,0),
-			    IT8172_MODULE_NAME)) {
-		err("io ports %#lx->%#lx in use",
-		    s->io, s->io + pci_resource_len(pcidev,0)-1);
-		goto err_region;
-	}
-	if (request_irq(s->irq, it8172_interrupt, IRQF_DISABLED,
-			IT8172_MODULE_NAME, s)) {
-		err("irq %u in use", s->irq);
-		goto err_irq;
-	}
-
-	info("IO at %#lx, IRQ %d", s->io, s->irq);
-
-	/* register devices */
-	if ((s->dev_audio = register_sound_dsp(&it8172_audio_fops, -1)) < 0)
-		goto err_dev1;
-	if ((s->codec.dev_mixer =
-	     register_sound_mixer(&it8172_mixer_fops, -1)) < 0)
-		goto err_dev2;
-
-#ifdef IT8172_DEBUG
-	/* initialize the debug proc device */
-	s->ps = create_proc_read_entry(IT8172_MODULE_NAME, 0, NULL,
-				       proc_it8172_dump, NULL);
-#endif /* IT8172_DEBUG */
-	
-	/*
-	 * Reset the Audio device using the IT8172 PCI Reset register. This
-	 * creates an audible double click on a speaker connected to Line-out.
-	 */
-	IT_IO_READ16(IT_PM_PCISR, pcisr);
-	pcisr |= IT_PM_PCISR_ACSR;
-	IT_IO_WRITE16(IT_PM_PCISR, pcisr);
-	/* wait up to 100msec for reset to complete */
-	for (i=0; pcisr & IT_PM_PCISR_ACSR; i++) {
-		it8172_delay(10);
-		if (i == 10)
-			break;
-		IT_IO_READ16(IT_PM_PCISR, pcisr);
-	}
-	if (i == 10) {
-		err("chip reset timeout!");
-		goto err_dev3;
-	}
-    
-	/* enable pci io and bus mastering */
-	if (pci_enable_device(pcidev))
-		goto err_dev3;
-	pci_set_master(pcidev);
-
-	/* get out of legacy mode */
-	pci_read_config_byte (pcidev, 0x40, &legacy);
-	pci_write_config_byte (pcidev, 0x40, legacy & ~1);
-    
-	s->spdif_volume = -1;
-	/* check to see if s/pdif mode is being requested */
-	if (spdif[devindex]) {
-		info("enabling S/PDIF output");
-		s->spdif_volume = 0;
-		outb(GC_SOE, s->io+IT_AC_GC);
-	} else {
-		info("disabling S/PDIF output");
-		outb(0, s->io+IT_AC_GC);
-	}
-    
-	/* check to see if I2S format requested */
-	if (i2s_fmt[devindex]) {
-		info("setting I2S format to 0x%02x", i2s_fmt[devindex]);
-		outb(i2s_fmt[devindex], s->io+IT_AC_I2SMC);
-	} else {
-		outb(I2SMC_I2SF_I2S, s->io+IT_AC_I2SMC);
-	}
-
-	/* cold reset the AC97 */
-	outw(CODECC_CR, s->io+IT_AC_CODECC);
-	udelay(1000);
-	outw(0, s->io+IT_AC_CODECC);
-	/* need to delay around 500msec(bleech) to give
-	   some CODECs enough time to wakeup */
-	it8172_delay(500);
-    
-	/* AC97 warm reset to start the bitclk */
-	outw(CODECC_WR, s->io+IT_AC_CODECC);
-	udelay(1000);
-	outw(0, s->io+IT_AC_CODECC);
-    
-	/* codec init */
-	if (!ac97_probe_codec(&s->codec))
-		goto err_dev3;
-
-	/* add I2S as allowable recording source */
-	s->codec.record_sources |= SOUND_MASK_I2S;
-	
-	/* Enable Volume button interrupts */
-	imc = inb(s->io+IT_AC_IMC);
-	outb(imc & ~IMC_VCIM, s->io+IT_AC_IMC);
-
-	/* Un-mute PCM and FM out on the controller */
-	vol = inw(s->io+IT_AC_PCMOV);
-	outw(vol & ~PCMOV_PCMOM, s->io+IT_AC_PCMOV);
-	vol = inw(s->io+IT_AC_FMOV);
-	outw(vol & ~FMOV_FMOM, s->io+IT_AC_FMOV);
-    
-	/* set channel defaults to 8-bit, mono, 8 Khz */
-	s->pcc = 0;
-	s->capcc = 0;
-	set_dac_rate(s, 8000);
-	set_adc_rate(s, 8000);
-
-	/* set mic to be the recording source */
-	val = SOUND_MASK_MIC;
-	mixdev_ioctl(&s->codec, SOUND_MIXER_WRITE_RECSRC,
-		     (unsigned long)&val);
-
-	/* mute AC'97 master and PCM when in S/PDIF mode */
-	if (s->spdif_volume != -1) {
-		val = 0x0000;
-		s->codec.mixer_ioctl(&s->codec, SOUND_MIXER_WRITE_VOLUME,
-				     (unsigned long)&val);
-		s->codec.mixer_ioctl(&s->codec, SOUND_MIXER_WRITE_PCM,
-				     (unsigned long)&val);
-	}
-    
-#ifdef IT8172_DEBUG
-	sprintf(proc_str, "driver/%s/%d/ac97", IT8172_MODULE_NAME,
-		s->codec.id);
-	s->ac97_ps = create_proc_read_entry (proc_str, 0, NULL,
-					     ac97_read_proc, &s->codec);
-#endif
-    
-	/* store it in the driver field */
-	pci_set_drvdata(pcidev, s);
-	pcidev->dma_mask = 0xffffffff;
-	/* put it into driver list */
-	list_add_tail(&s->devs, &devs);
-	/* increment devindex */
-	if (devindex < NR_DEVICE-1)
-		devindex++;
-	return 0;
-
- err_dev3:
-	unregister_sound_mixer(s->codec.dev_mixer);
- err_dev2:
-	unregister_sound_dsp(s->dev_audio);
- err_dev1:
-	err("cannot register misc device");
-	free_irq(s->irq, s);
- err_irq:
-	release_region(s->io, pci_resource_len(pcidev,0));
- err_region:
-	kfree(s);
-	return -1;
-}
-
-static void __devexit it8172_remove(struct pci_dev *dev)
-{
-	struct it8172_state *s = pci_get_drvdata(dev);
-
-	if (!s)
-		return;
-	list_del(&s->devs);
-#ifdef IT8172_DEBUG
-	if (s->ps)
-		remove_proc_entry(IT8172_MODULE_NAME, NULL);
-#endif /* IT8172_DEBUG */
-	synchronize_irq(s->irq);
-	free_irq(s->irq, s);
-	release_region(s->io, pci_resource_len(dev,0));
-	unregister_sound_dsp(s->dev_audio);
-	unregister_sound_mixer(s->codec.dev_mixer);
-	kfree(s);
-	pci_set_drvdata(dev, NULL);
-}
-
-
-
-static struct pci_device_id id_table[] = {
-	{ PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_IT8172G_AUDIO, PCI_ANY_ID,
-	  PCI_ANY_ID, 0, 0 },
-	{ 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, id_table);
-
-static struct pci_driver it8172_driver = {
-	.name = IT8172_MODULE_NAME,
-	.id_table = id_table,
-	.probe = it8172_probe,
-	.remove = __devexit_p(it8172_remove)
-};
-
-static int __init init_it8172(void)
-{
-	info("version v0.5 time " __TIME__ " " __DATE__);
-	return pci_register_driver(&it8172_driver);
-}
-
-static void __exit cleanup_it8172(void)
-{
-	info("unloading");
-	pci_unregister_driver(&it8172_driver);
-}
-
-module_init(init_it8172);
-module_exit(cleanup_it8172);
-
-/* --------------------------------------------------------------------- */
-
-#ifndef MODULE
-
-/* format is: it8172=[spdif],[i2s:<I2S format>] */
-
-static int __init it8172_setup(char *options)
-{
-	char* this_opt;
-	static unsigned __initdata nr_dev = 0;
-
-	if (nr_dev >= NR_DEVICE)
-		return 0;
-
-	if (!options || !*options)
-		return 0;
-
-	while (this_opt = strsep(&options, ",")) {
-		if (!*this_opt)
-			continue;
-		if (!strncmp(this_opt, "spdif", 5)) {
-			spdif[nr_dev] = 1;
-		} else if (!strncmp(this_opt, "i2s:", 4)) {
-			if (!strncmp(this_opt+4, "dac", 3))
-				i2s_fmt[nr_dev] = I2SMC_I2SF_DAC;
-			else if (!strncmp(this_opt+4, "adc", 3))
-				i2s_fmt[nr_dev] = I2SMC_I2SF_ADC;
-			else if (!strncmp(this_opt+4, "i2s", 3))
-				i2s_fmt[nr_dev] = I2SMC_I2SF_I2S;
-		}
-	}
-
-	nr_dev++;
-	return 1;
-}
-
-__setup("it8172=", it8172_setup);
-
-#endif /* MODULE */