DDB5477: remove driver bits of support

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

6 files changed, 0 insertions, 2098 deletions

diff --git a/drivers/net/tulip/tulip_core.c b/drivers/net/tulip/tulip_core.c
index f87d76981ab7..eca984f89bbf 100644
--- a/drivers/net/tulip/tulip_core.c
+++ b/drivers/net/tulip/tulip_core.c
@@ -1471,14 +1471,6 @@ static int __devinit tulip_init_one (struct pci_dev *pdev,
 			sa_offset = 2;		/* Grrr, damn Matrox boards. */
 			multiport_cnt = 4;
 		}
-#ifdef CONFIG_DDB5477
-               if ((pdev->bus->number == 0) && (PCI_SLOT(pdev->devfn) == 4)) {
-                       /* DDB5477 MAC address in first EEPROM locations. */
-                       sa_offset = 0;
-                       /* No media table either */
-                       tp->flags &= ~HAS_MEDIA_TABLE;
-               }
-#endif
 #ifdef CONFIG_MIPS_COBALT
                if ((pdev->bus->number == 0) &&
                    ((PCI_SLOT(pdev->devfn) == 7) ||
diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index 6d7d616e9ccd..5e485876f54c 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -976,7 +976,6 @@ enum pci_board_num_t {
 	pbn_oxsemi,
 	pbn_intel_i960,
 	pbn_sgi_ioc3,
-	pbn_nec_nile4,
 	pbn_computone_4,
 	pbn_computone_6,
 	pbn_computone_8,
@@ -1443,18 +1442,6 @@ static struct pciserial_board pci_boards[] __devinitdata = {
 	},
 
 	/*
-	 * NEC Vrc-5074 (Nile 4) builtin UART.
-	 */
-	[pbn_nec_nile4] = {
-		.flags		= FL_BASE0,
-		.num_ports	= 1,
-		.base_baud	= 520833,
-		.uart_offset	= 8 << 3,
-		.reg_shift	= 3,
-		.first_offset	= 0x300,
-	},
-
-	/*
 	 * Computone - uses IOMEM.
 	 */
 	[pbn_computone_4] = {
@@ -2345,13 +2332,6 @@ static struct pci_device_id serial_pci_tbl[] = {
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		pbn_b2_1_115200 },
 
-	/*
-	 * NEC Vrc-5074 (Nile 4) builtin UART.
-	 */
-	{	PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_NILE4,
-		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
-		pbn_nec_nile4 },
-
 	{	PCI_VENDOR_ID_DCI, PCI_DEVICE_ID_DCI_PCCOM2,
 		PCI_ANY_ID, PCI_ANY_ID, 0, 0,
 		pbn_b3_2_115200 },
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index 69d68117bdac..07fc57429b58 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -611,7 +611,6 @@
 #define PCI_DEVICE_ID_NEC_CBUS_3	0x003b
 #define PCI_DEVICE_ID_NEC_NAPCCARD	0x003e
 #define PCI_DEVICE_ID_NEC_PCX2		0x0046 /* PowerVR */
-#define PCI_DEVICE_ID_NEC_NILE4		0x005a
 #define PCI_DEVICE_ID_NEC_VRC5476       0x009b
 #define PCI_DEVICE_ID_NEC_VRC4173	0x00a5
 #define PCI_DEVICE_ID_NEC_VRC5477_AC97  0x00a6
diff --git a/sound/oss/Kconfig b/sound/oss/Kconfig
index 866d4de8d4ab..af37cd09bddd 100644
--- a/sound/oss/Kconfig
+++ b/sound/oss/Kconfig
@@ -31,14 +31,6 @@ config SOUND_HAL2
 	  Say Y or M if you have an SGI Indy or Indigo2 system and want to be able to
 	  use its on-board A2 audio system.
 
-config SOUND_VRC5477
-	tristate "NEC Vrc5477 AC97 sound"
-	depends on SOUND_PRIME && DDB5477
-	help
-	  Say Y here to enable sound support for the NEC Vrc5477 chip, an
-	  integrated, multi-function controller chip for MIPS CPUs.  Works
-	  with the AC97 codec.
-
 config SOUND_AU1550_AC97
 	tristate "Au1550/Au1200 AC97 Sound"
 	select SND_AC97_CODEC
diff --git a/sound/oss/Makefile b/sound/oss/Makefile
index 7a2f9ae7b7c5..1200670017bd 100644
--- a/sound/oss/Makefile
+++ b/sound/oss/Makefile
@@ -37,7 +37,6 @@ obj-$(CONFIG_SOUND_MSNDPIN)	+= msnd.o msnd_pinnacle.o
 obj-$(CONFIG_SOUND_VWSND)	+= vwsnd.o
 obj-$(CONFIG_SOUND_ICH)		+= i810_audio.o ac97_codec.o
 obj-$(CONFIG_SOUND_ES1371)	+= es1371.o ac97_codec.o
-obj-$(CONFIG_SOUND_VRC5477)	+= nec_vrc5477.o ac97_codec.o
 obj-$(CONFIG_SOUND_AU1550_AC97)	+= au1550_ac97.o ac97_codec.o
 obj-$(CONFIG_SOUND_TRIDENT)	+= trident.o ac97_codec.o
 obj-$(CONFIG_SOUND_BCM_CS4297A)	+= swarm_cs4297a.o
diff --git a/sound/oss/nec_vrc5477.c b/sound/oss/nec_vrc5477.c
deleted file mode 100644
index 27b4ba3aaa7c..000000000000
--- a/sound/oss/nec_vrc5477.c
+++ /dev/null
@@ -1,2060 +0,0 @@
-/***********************************************************************
- * Copyright 2001 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- *
- * drivers/sound/nec_vrc5477.c
- *     AC97 sound dirver for NEC Vrc5477 chip (an integrated, 
- *     multi-function controller chip for MIPS CPUs)
- *
- * VRA support Copyright 2001 Bradley D. LaRonde <brad@ltc.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 code is derived from ite8172.c, which is written by Steve Longerbeam.
- *
- * Features:
- *   Currently we only support the following capabilities:
- *	. mono output to PCM L/R (line out).
- *	. stereo output to PCM L/R (line out).
- *	. mono input from PCM L (line in).
- *	. stereo output from PCM (line in).
- *	. sampling rate at 48k or variable sampling rate 
- *	. support /dev/dsp, /dev/mixer devices, standard OSS devices.
- *	. only support 16-bit PCM format (hardware limit, no software
- *	  translation) 
- *	. support duplex, but no trigger or realtime.
- *	
- *   Specifically the following are not supported:
- *	. app-set frag size.
- *	. mmap'ed buffer access
- */
-
-/* 
- * Original comments from ite8172.c file.
- */
-
-/*
- *
- * 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.
- *  3. The following is not supported:
- *      * I2S input.
- *      * legacy audio mode.
- *  4. Support for volume button interrupts is implemented but doesn't
- *     work yet.
- *
- *  Revision history
- *    02.08.2001  0.1   Initial release
- */
-
-#include <linux/module.h>
-#include <linux/string.h>
-#include <linux/kernel.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/mutex.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/uaccess.h>
-
-/* -------------------debug macros -------------------------------------- */
-/* #undef VRC5477_AC97_DEBUG */
-#define VRC5477_AC97_DEBUG
-
-#undef VRC5477_AC97_VERBOSE_DEBUG
-/* #define VRC5477_AC97_VERBOSE_DEBUG */
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
-#define VRC5477_AC97_DEBUG
-#endif
-
-#if defined(VRC5477_AC97_DEBUG)
-#define ASSERT(x)  if (!(x)) { \
-	panic("assertion failed at %s:%d: %s\n", __FILE__, __LINE__, #x); }
-#else
-#define	ASSERT(x)
-#endif /* VRC5477_AC97_DEBUG */
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
-static u16 inTicket; 		/* check sync between intr & write */
-static u16 outTicket;
-#endif
-
-/* --------------------------------------------------------------------- */
-
-#undef OSS_DOCUMENTED_MIXER_SEMANTICS
-
-static const unsigned sample_shift[] = { 0, 1, 1, 2 };
-
-#define         VRC5477_INT_CLR         0x0
-#define         VRC5477_INT_STATUS	0x0
-#define         VRC5477_CODEC_WR        0x4
-#define         VRC5477_CODEC_RD        0x8
-#define         VRC5477_CTRL            0x18
-#define         VRC5477_ACLINK_CTRL     0x1c
-#define         VRC5477_INT_MASK        0x24
-
-#define		VRC5477_DAC1_CTRL	0x30
-#define		VRC5477_DAC1L		0x34
-#define		VRC5477_DAC1_BADDR	0x38
-#define		VRC5477_DAC2_CTRL	0x3c
-#define		VRC5477_DAC2L		0x40
-#define		VRC5477_DAC2_BADDR	0x44
-#define		VRC5477_DAC3_CTRL	0x48
-#define		VRC5477_DAC3L		0x4c
-#define		VRC5477_DAC3_BADDR	0x50
-
-#define		VRC5477_ADC1_CTRL	0x54
-#define		VRC5477_ADC1L		0x58
-#define		VRC5477_ADC1_BADDR	0x5c
-#define		VRC5477_ADC2_CTRL	0x60
-#define		VRC5477_ADC2L		0x64
-#define		VRC5477_ADC2_BADDR	0x68
-#define		VRC5477_ADC3_CTRL	0x6c
-#define		VRC5477_ADC3L		0x70
-#define		VRC5477_ADC3_BADDR	0x74
-
-#define		VRC5477_CODEC_WR_RWC	(1 << 23)
-
-#define		VRC5477_CODEC_RD_RRDYA	(1 << 31)
-#define		VRC5477_CODEC_RD_RRDYD	(1 << 30)
-
-#define		VRC5477_ACLINK_CTRL_RST_ON	(1 << 15)
-#define		VRC5477_ACLINK_CTRL_RST_TIME	0x7f
-#define		VRC5477_ACLINK_CTRL_SYNC_ON	(1 << 30)
-#define		VRC5477_ACLINK_CTRL_CK_STOP_ON	(1 << 31)
-
-#define		VRC5477_CTRL_DAC2ENB		(1 << 15) 
-#define		VRC5477_CTRL_ADC2ENB		(1 << 14) 
-#define		VRC5477_CTRL_DAC1ENB		(1 << 13) 
-#define		VRC5477_CTRL_ADC1ENB		(1 << 12) 
-
-#define		VRC5477_INT_MASK_NMASK		(1 << 31) 
-#define		VRC5477_INT_MASK_DAC1END	(1 << 5) 
-#define		VRC5477_INT_MASK_DAC2END	(1 << 4) 
-#define		VRC5477_INT_MASK_DAC3END	(1 << 3) 
-#define		VRC5477_INT_MASK_ADC1END	(1 << 2) 
-#define		VRC5477_INT_MASK_ADC2END	(1 << 1) 
-#define		VRC5477_INT_MASK_ADC3END	(1 << 0) 
-
-#define		VRC5477_DMA_ACTIVATION		(1 << 31)
-#define		VRC5477_DMA_WIP			(1 << 30)
-
-
-#define VRC5477_AC97_MODULE_NAME "NEC_Vrc5477_audio"
-#define PFX VRC5477_AC97_MODULE_NAME ": "
-
-/* --------------------------------------------------------------------- */
-
-struct vrc5477_ac97_state {
-	/* list of vrc5477_ac97 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;
-
-#ifdef VRC5477_AC97_DEBUG
-	/* debug /proc entry */
-	struct proc_dir_entry *ps;
-	struct proc_dir_entry *ac97_ps;
-#endif /* VRC5477_AC97_DEBUG */
-
-	struct ac97_codec *codec;
-
-	unsigned dacChannels, adcChannels;
-	unsigned short dacRate, adcRate;
-	unsigned short extended_status;
-
-	spinlock_t lock;
-	struct mutex open_mutex;
-	mode_t open_mode;
-	wait_queue_head_t open_wait;
-
-	struct dmabuf {
-		void *lbuf, *rbuf;
-		dma_addr_t lbufDma, rbufDma;
-		unsigned bufOrder;
-		unsigned numFrag;
-		unsigned fragShift;
-		unsigned fragSize;	/* redundant */
-		unsigned fragTotalSize;	/* = numFrag * fragSize(real)  */
-		unsigned nextIn;
-		unsigned nextOut;
-		int count;
-		unsigned error; /* over/underrun */
-		wait_queue_head_t wait;
-		/* OSS stuff */
-		unsigned stopped:1;
-		unsigned ready:1;
-	} dma_dac, dma_adc;
-
-	#define	WORK_BUF_SIZE	2048
-	struct {
-		u16 lchannel;
-		u16 rchannel;
-	} workBuf[WORK_BUF_SIZE/4];
-};
-
-/* --------------------------------------------------------------------- */
-
-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 u16 rdcodec(struct ac97_codec *codec, u8 addr)
-{
-	struct vrc5477_ac97_state *s = 
-		(struct vrc5477_ac97_state *)codec->private_data;
-	unsigned long flags;
-	u32 result;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	/* wait until we can access codec registers */
-	while (inl(s->io + VRC5477_CODEC_WR) & 0x80000000);
-
-	/* write the address and "read" command to codec */
-	addr = addr & 0x7f;
-	outl((addr << 16) | VRC5477_CODEC_WR_RWC, s->io + VRC5477_CODEC_WR);
-
-	/* get the return result */
-	udelay(100); /* workaround hardware bug */
-	while ( (result = inl(s->io + VRC5477_CODEC_RD)) & 
-                (VRC5477_CODEC_RD_RRDYA | VRC5477_CODEC_RD_RRDYD) ) {
-		/* we get either addr or data, or both */
-		if (result & VRC5477_CODEC_RD_RRDYA) {
-			ASSERT(addr == ((result >> 16) & 0x7f) );
-		}
-		if (result & VRC5477_CODEC_RD_RRDYD) {
-			break;
-		}
-	}
-
-	spin_unlock_irqrestore(&s->lock, flags);
-
-	return result & 0xffff;
-}
-
-
-static void wrcodec(struct ac97_codec *codec, u8 addr, u16 data)
-{
-	struct vrc5477_ac97_state *s = 
-		(struct vrc5477_ac97_state *)codec->private_data;
-	unsigned long flags;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	/* wait until we can access codec registers */
-	while (inl(s->io + VRC5477_CODEC_WR) & 0x80000000);
-
-	/* write the address and value to codec */
-	outl((addr << 16) | data, s->io + VRC5477_CODEC_WR);
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}
-
-
-static void waitcodec(struct ac97_codec *codec)
-{
-	struct vrc5477_ac97_state *s = 
-		(struct vrc5477_ac97_state *)codec->private_data;
-
-	/* wait until we can access codec registers */
-	while (inl(s->io + VRC5477_CODEC_WR) & 0x80000000);
-}
-
-static int ac97_codec_not_present(struct ac97_codec *codec)
-{
-	struct vrc5477_ac97_state *s = 
-		(struct vrc5477_ac97_state *)codec->private_data;
-	unsigned long flags;
-	unsigned short count  = 0xffff; 
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	/* wait until we can access codec registers */
-	do {
-	       if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000))
-		       break;
-	} while (--count);
-
-	if (count == 0) {
-		spin_unlock_irqrestore(&s->lock, flags);
-		return -1;
-	}
-
-	/* write 0 to reset */
-	outl((AC97_RESET << 16) | 0, s->io + VRC5477_CODEC_WR);
-
-	/* test whether we get a response from ac97 chip */
-	count  = 0xffff; 
-	do { 
-	       if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000))
-		       break;
-	} while (--count);
-
-	if (count == 0) {
-		spin_unlock_irqrestore(&s->lock, flags);
-		return -1;
-	}
-	spin_unlock_irqrestore(&s->lock, flags);
-	return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static void vrc5477_ac97_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 void set_adc_rate(struct vrc5477_ac97_state *s, unsigned rate)
-{
-	wrcodec(s->codec, AC97_PCM_LR_ADC_RATE, rate);
-	s->adcRate = rate;
-}
-
-
-static void set_dac_rate(struct vrc5477_ac97_state *s, unsigned rate)
-{
-	if(s->extended_status & AC97_EXTSTAT_VRA) {
-	wrcodec(s->codec, AC97_PCM_FRONT_DAC_RATE, rate);
-		s->dacRate = rdcodec(s->codec, AC97_PCM_FRONT_DAC_RATE);
-	}
-}
-
-static int ac97_codec_not_present(struct ac97_codec *codec)
-{
-	struct vrc5477_ac97_state *s =
-		(struct vrc5477_ac97_state *)codec->private_data;
-	unsigned long flags;
-	unsigned short count  = 0xffff;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	/* wait until we can access codec registers */
-	do {
-	       if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000))
-		       break;
-	} while (--count);
-
-	if (count == 0) {
-		spin_unlock_irqrestore(&s->lock, flags);
-		return -1;
-	}
-
-	/* write 0 to reset */
-	outl((AC97_RESET << 16) | 0, s->io + VRC5477_CODEC_WR);
-
-	/* test whether we get a response from ac97 chip */
-	count  = 0xffff;
-	do {
-	       if (!(inl(s->io + VRC5477_CODEC_WR) & 0x80000000))
-		       break;
-	} while (--count);
-
-	if (count == 0) {
-		spin_unlock_irqrestore(&s->lock, flags);
-		return -1;
-	}
-	spin_unlock_irqrestore(&s->lock, flags);
-	return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static inline void
-stop_dac(struct vrc5477_ac97_state *s)
-{
-	struct dmabuf* db = &s->dma_dac;
-	unsigned long flags;
-	u32 temp;
-    
-	spin_lock_irqsave(&s->lock, flags);
-
-	if (db->stopped) {
-		spin_unlock_irqrestore(&s->lock, flags);
-		return;
-	}
-
-	/* deactivate the dma */
-	outl(0, s->io + VRC5477_DAC1_CTRL);
-	outl(0, s->io + VRC5477_DAC2_CTRL);
-
-	/* wait for DAM completely stop */
-	while (inl(s->io + VRC5477_DAC1_CTRL) & VRC5477_DMA_WIP);
-	while (inl(s->io + VRC5477_DAC2_CTRL) & VRC5477_DMA_WIP);
-
-	/* disable dac slots in aclink */
-	temp = inl(s->io + VRC5477_CTRL);
-	temp &= ~ (VRC5477_CTRL_DAC1ENB | VRC5477_CTRL_DAC2ENB);
-	outl (temp, s->io + VRC5477_CTRL);
-
-	/* disable interrupts */
-	temp = inl(s->io + VRC5477_INT_MASK);
-	temp &= ~ (VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END); 
-	outl (temp, s->io + VRC5477_INT_MASK);
-
-	/* clear pending ones */
-	outl(VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END, 
-	     s->io +  VRC5477_INT_CLR);
-    
-	db->stopped = 1;
-    
-	spin_unlock_irqrestore(&s->lock, flags);
-}	
-
-static void start_dac(struct vrc5477_ac97_state *s)
-{
-	struct dmabuf* db = &s->dma_dac;
-	unsigned long flags;
-	u32 dmaLength;
-	u32 temp;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	if (!db->stopped) {
-		spin_unlock_irqrestore(&s->lock, flags);
-		return;
-	}
-
-	/* we should have some data to do the DMA trasnfer */
-	ASSERT(db->count >= db->fragSize);
-
-	/* clear pending fales interrupts */
-	outl(VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END, 
-	     s->io +  VRC5477_INT_CLR);
-
-	/* enable interrupts */
-	temp = inl(s->io + VRC5477_INT_MASK);
-	temp |= VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END;
-	outl(temp, s->io +  VRC5477_INT_MASK);
-
-	/* setup dma base addr */
-	outl(db->lbufDma + db->nextOut, s->io + VRC5477_DAC1_BADDR);
-	if (s->dacChannels == 1) {
-		outl(db->lbufDma + db->nextOut, s->io + VRC5477_DAC2_BADDR);
-	} else {
-		outl(db->rbufDma + db->nextOut, s->io + VRC5477_DAC2_BADDR);
-	}
-
-	/* set dma length, in the unit of 0x10 bytes */
-	dmaLength = db->fragSize >> 4;
-	outl(dmaLength, s->io + VRC5477_DAC1L);
-	outl(dmaLength, s->io + VRC5477_DAC2L);
-
-	/* activate dma */
-	outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_DAC1_CTRL);
-	outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_DAC2_CTRL);
-
-	/* enable dac slots - we should hear the music now! */
-	temp = inl(s->io + VRC5477_CTRL);
-	temp |= (VRC5477_CTRL_DAC1ENB | VRC5477_CTRL_DAC2ENB);
-	outl (temp, s->io + VRC5477_CTRL);
-
-	/* it is time to setup next dma transfer */
-	ASSERT(inl(s->io + VRC5477_DAC1_CTRL) & VRC5477_DMA_WIP);
-	ASSERT(inl(s->io + VRC5477_DAC2_CTRL) & VRC5477_DMA_WIP);
-
-	temp = db->nextOut + db->fragSize;
-	if (temp >= db->fragTotalSize) {
-		ASSERT(temp == db->fragTotalSize);
-		temp = 0;
-	}
-
-	outl(db->lbufDma + temp, s->io + VRC5477_DAC1_BADDR);
-	if (s->dacChannels == 1) {
-		outl(db->lbufDma + temp, s->io + VRC5477_DAC2_BADDR);
-	} else {
-		outl(db->rbufDma + temp, s->io + VRC5477_DAC2_BADDR);
-	}
-
-	db->stopped = 0;
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
-	outTicket = *(u16*)(db->lbuf+db->nextOut);
-	if (db->count > db->fragSize) {
-		ASSERT((u16)(outTicket+1) == *(u16*)(db->lbuf+temp));
-	}
-#endif
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}	
-
-static inline void stop_adc(struct vrc5477_ac97_state *s)
-{
-	struct dmabuf* db = &s->dma_adc;
-	unsigned long flags;
-	u32 temp;
-    
-	spin_lock_irqsave(&s->lock, flags);
-
-	if (db->stopped) {
-		spin_unlock_irqrestore(&s->lock, flags);
-		return;
-	}
-
-	/* deactivate the dma */
-	outl(0, s->io + VRC5477_ADC1_CTRL);
-	outl(0, s->io + VRC5477_ADC2_CTRL);
-
-	/* disable adc slots in aclink */
-	temp = inl(s->io + VRC5477_CTRL);
-	temp &= ~ (VRC5477_CTRL_ADC1ENB | VRC5477_CTRL_ADC2ENB);
-	outl (temp, s->io + VRC5477_CTRL);
-
-	/* disable interrupts */
-        temp = inl(s->io + VRC5477_INT_MASK);
-        temp &= ~ (VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END); 
-        outl (temp, s->io + VRC5477_INT_MASK);
-
-	/* clear pending ones */
-	outl(VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END, 
-	     s->io +  VRC5477_INT_CLR);
-    
-	db->stopped = 1;
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}	
-
-static void start_adc(struct vrc5477_ac97_state *s)
-{
-	struct dmabuf* db = &s->dma_adc;
-	unsigned long flags;
-	u32 dmaLength;
-	u32 temp;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	if (!db->stopped) {
-		spin_unlock_irqrestore(&s->lock, flags);
-		return;
-	}
-
-	/* we should at least have some free space in the buffer */
-	ASSERT(db->count < db->fragTotalSize - db->fragSize * 2);
-
-	/* clear pending ones */
-	outl(VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END, 
-	     s->io +  VRC5477_INT_CLR);
-
-        /* enable interrupts */
-        temp = inl(s->io + VRC5477_INT_MASK);
-        temp |= VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END;
-        outl(temp, s->io +  VRC5477_INT_MASK);
-
-	/* setup dma base addr */
-	outl(db->lbufDma + db->nextIn, s->io + VRC5477_ADC1_BADDR);
-	outl(db->rbufDma + db->nextIn, s->io + VRC5477_ADC2_BADDR);
-
-	/* setup dma length */
-	dmaLength = db->fragSize >> 4;
-	outl(dmaLength, s->io + VRC5477_ADC1L);
-	outl(dmaLength, s->io + VRC5477_ADC2L);
-
-	/* activate dma */
-	outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_ADC1_CTRL);
-	outl(VRC5477_DMA_ACTIVATION, s->io + VRC5477_ADC2_CTRL);
-
-	/* enable adc slots */
-	temp = inl(s->io + VRC5477_CTRL);
-	temp |= (VRC5477_CTRL_ADC1ENB | VRC5477_CTRL_ADC2ENB);
-	outl (temp, s->io + VRC5477_CTRL);
-
-	/* it is time to setup next dma transfer */
-	temp = db->nextIn + db->fragSize;
-	if (temp >= db->fragTotalSize) {
-		ASSERT(temp == db->fragTotalSize);
-		temp = 0;
-	}
-	outl(db->lbufDma + temp, s->io + VRC5477_ADC1_BADDR);
-	outl(db->rbufDma + temp, s->io + VRC5477_ADC2_BADDR);
-
-	db->stopped = 0;
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}	
-
-/* --------------------------------------------------------------------- */
-
-#define DMABUF_DEFAULTORDER (16-PAGE_SHIFT)
-#define DMABUF_MINORDER 1
-
-static inline void dealloc_dmabuf(struct vrc5477_ac97_state *s,
-				  struct dmabuf *db)
-{
-	if (db->lbuf) {
-		ASSERT(db->rbuf);
-		pci_free_consistent(s->dev, PAGE_SIZE << db->bufOrder,
-				    db->lbuf, db->lbufDma);
-		pci_free_consistent(s->dev, PAGE_SIZE << db->bufOrder,
-				    db->rbuf, db->rbufDma);
-		db->lbuf = db->rbuf = NULL;
-	}
-	db->nextIn = db->nextOut = 0;
-	db->ready = 0;
-}
-
-static int prog_dmabuf(struct vrc5477_ac97_state *s, 
-		       struct dmabuf *db,
-		       unsigned rate)
-{
-	int order;
-	unsigned bufsize;
-
-	if (!db->lbuf) {
-		ASSERT(!db->rbuf);
-
-		db->ready = 0;
-		for (order = DMABUF_DEFAULTORDER; 
-		     order >= DMABUF_MINORDER; 
-		     order--) {
-			db->lbuf = pci_alloc_consistent(s->dev,
-							PAGE_SIZE << order,
-							&db->lbufDma);
-			db->rbuf = pci_alloc_consistent(s->dev,
-							PAGE_SIZE << order,
-							&db->rbufDma);
-			if (db->lbuf && db->rbuf) break;
-			if (db->lbuf) {
-			    ASSERT(!db->rbuf);
-			    pci_free_consistent(s->dev, 
-						PAGE_SIZE << order,
-						db->lbuf,
-						db->lbufDma);
-			}
-		}
-		if (!db->lbuf) {
-			ASSERT(!db->rbuf);
-			return -ENOMEM;
-		}
-
-		db->bufOrder = order;
-	}
-
-	db->count = 0;
-	db->nextIn = db->nextOut = 0;
-    
-	bufsize = PAGE_SIZE << db->bufOrder;
-	db->fragShift = ld2(rate * 2 / 100);
-	if (db->fragShift < 4) db->fragShift = 4;
-
-	db->numFrag = bufsize >> db->fragShift;
-	while (db->numFrag < 4 && db->fragShift > 4) {
-		db->fragShift--;
-		db->numFrag = bufsize >> db->fragShift;
-	}
-	db->fragSize = 1 << db->fragShift;
-	db->fragTotalSize = db->numFrag << db->fragShift;
-	memset(db->lbuf, 0, db->fragTotalSize);
-	memset(db->rbuf, 0, db->fragTotalSize);
-    
-	db->ready = 1;
-
-	return 0;
-}
-
-static inline int prog_dmabuf_adc(struct vrc5477_ac97_state *s)
-{
-    stop_adc(s);
-    return prog_dmabuf(s, &s->dma_adc, s->adcRate);
-}
-
-static inline int prog_dmabuf_dac(struct vrc5477_ac97_state *s)
-{
-    stop_dac(s);
-    return prog_dmabuf(s, &s->dma_dac, s->dacRate);
-}
-
-
-/* --------------------------------------------------------------------- */
-/* hold spinlock for the following! */
-
-static inline void vrc5477_ac97_adc_interrupt(struct vrc5477_ac97_state *s)
-{
-	struct dmabuf* adc = &s->dma_adc;
-	unsigned temp;
-
-	/* we need two frags avaiable because one is already being used
-	 * and the other will be used when next interrupt happens.
-	 */
-	if (adc->count >= adc->fragTotalSize - adc->fragSize) {
-		stop_adc(s);
-		adc->error++;
-		printk(KERN_INFO PFX "adc overrun\n");
-		return;
-	}
-
-	/* set the base addr for next DMA transfer */
-	temp = adc->nextIn + 2*adc->fragSize;
-	if (temp >= adc->fragTotalSize) {
-		ASSERT( (temp == adc->fragTotalSize) ||
-                             (temp == adc->fragTotalSize + adc->fragSize) );
-		temp -= adc->fragTotalSize;
-	}
-	outl(adc->lbufDma + temp, s->io + VRC5477_ADC1_BADDR);
-	outl(adc->rbufDma + temp, s->io + VRC5477_ADC2_BADDR);
-
-	/* adjust nextIn */
-	adc->nextIn += adc->fragSize;
-	if (adc->nextIn >= adc->fragTotalSize) {
-		ASSERT(adc->nextIn == adc->fragTotalSize);
-		adc->nextIn = 0;
-	}
-
-	/* adjust count */
-	adc->count += adc->fragSize;
-
-	/* wake up anybody listening */
-	if (waitqueue_active(&adc->wait)) {
-		wake_up_interruptible(&adc->wait);
-	}	
-}
-
-static inline void vrc5477_ac97_dac_interrupt(struct vrc5477_ac97_state *s)
-{
-	struct dmabuf* dac = &s->dma_dac;
-	unsigned temp;
-
-	/* next DMA transfer should already started */
-	// ASSERT(inl(s->io + VRC5477_DAC1_CTRL) & VRC5477_DMA_WIP);
-	// ASSERT(inl(s->io + VRC5477_DAC2_CTRL) & VRC5477_DMA_WIP);
-
-	/* let us set for next next DMA transfer */
-	temp = dac->nextOut + dac->fragSize*2;
-	if (temp >= dac->fragTotalSize) {
-		ASSERT( (temp == dac->fragTotalSize) || 
-                             (temp == dac->fragTotalSize + dac->fragSize) );
-		temp -= dac->fragTotalSize;
-	}
-	outl(dac->lbufDma + temp, s->io + VRC5477_DAC1_BADDR);
-	if (s->dacChannels == 1) {
-		outl(dac->lbufDma + temp, s->io + VRC5477_DAC2_BADDR);
-	} else {
-		outl(dac->rbufDma + temp, s->io + VRC5477_DAC2_BADDR);
-	}
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
-	if (*(u16*)(dac->lbuf +  dac->nextOut) != outTicket) {
-		printk("assert fail: - %d vs %d\n", 
-		        *(u16*)(dac->lbuf +  dac->nextOut),
-                        outTicket);
-                ASSERT(1 == 0);
-	}
-#endif
-
-	/* adjust nextOut pointer */
-	dac->nextOut += dac->fragSize;
-	if (dac->nextOut >= dac->fragTotalSize) {
-		ASSERT(dac->nextOut == dac->fragTotalSize);
-		dac->nextOut = 0;
-	}
-
-	/* adjust count */
-	dac->count -= dac->fragSize;
-	if (dac->count <=0 ) {
-		/* buffer under run */
-		dac->count = 0;
-		dac->nextIn = dac->nextOut;
-		stop_dac(s);
-	}
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
-	if (dac->count) {
-		outTicket ++;
-		ASSERT(*(u16*)(dac->lbuf +  dac->nextOut) == outTicket);
-	}
-#endif
-	
-	/* we cannot have both under run and someone is waiting on us */
-	ASSERT(! (waitqueue_active(&dac->wait) && (dac->count <= 0)) );
-
-	/* wake up anybody listening */
-	if (waitqueue_active(&dac->wait))
-		wake_up_interruptible(&dac->wait);
-}
-
-static irqreturn_t vrc5477_ac97_interrupt(int irq, void *dev_id)
-{
-	struct vrc5477_ac97_state *s = (struct vrc5477_ac97_state *)dev_id;
-	u32 irqStatus;
-	u32 adcInterrupts, dacInterrupts;
-
-	spin_lock(&s->lock);
-
-	/* get irqStatus and clear the detected ones */
-	irqStatus = inl(s->io + VRC5477_INT_STATUS);
-	outl(irqStatus, s->io + VRC5477_INT_CLR);
-
-	/* let us see what we get */
-	dacInterrupts = VRC5477_INT_MASK_DAC1END | VRC5477_INT_MASK_DAC2END;
-	adcInterrupts = VRC5477_INT_MASK_ADC1END | VRC5477_INT_MASK_ADC2END;
-	if (irqStatus & dacInterrupts) {
-		/* we should get both interrupts, but just in case ...  */
-		if (irqStatus & VRC5477_INT_MASK_DAC1END) {
-			vrc5477_ac97_dac_interrupt(s);
-		}
-		if ( (irqStatus & dacInterrupts) != dacInterrupts ) {
-			printk(KERN_WARNING "vrc5477_ac97 : dac interrupts not in sync!!!\n");
-			stop_dac(s);
-			start_dac(s);
-		}
-	} else if (irqStatus & adcInterrupts) {
-		/* we should get both interrupts, but just in case ...  */
-		if(irqStatus & VRC5477_INT_MASK_ADC1END) {
-			vrc5477_ac97_adc_interrupt(s);
-		} 
-		if ( (irqStatus & adcInterrupts) != adcInterrupts ) {
-			printk(KERN_WARNING "vrc5477_ac97 : adc interrupts not in sync!!!\n");
-			stop_adc(s);
-			start_adc(s);
-		}
-	}
-
-	spin_unlock(&s->lock);
-	return IRQ_HANDLED;
-}
-
-/* --------------------------------------------------------------------- */
-
-static int vrc5477_ac97_open_mixdev(struct inode *inode, struct file *file)
-{
-	int minor = iminor(inode);
-	struct list_head *list;
-	struct vrc5477_ac97_state *s;
-
-	for (list = devs.next; ; list = list->next) {
-		if (list == &devs)
-			return -ENODEV;
-		s = list_entry(list, struct vrc5477_ac97_state, devs);
-		if (s->codec->dev_mixer == minor)
-			break;
-	}
-	file->private_data = s;
-	return nonseekable_open(inode, file);
-}
-
-static int vrc5477_ac97_release_mixdev(struct inode *inode, struct file *file)
-{
-	return 0;
-}
-
-
-static int mixdev_ioctl(struct ac97_codec *codec, unsigned int cmd,
-			unsigned long arg)
-{
-	return codec->mixer_ioctl(codec, cmd, arg);
-}
-
-static int vrc5477_ac97_ioctl_mixdev(struct inode *inode, struct file *file,
-				     unsigned int cmd, unsigned long arg)
-{
-    struct vrc5477_ac97_state *s = 
-	    (struct vrc5477_ac97_state *)file->private_data;
-    struct ac97_codec *codec = s->codec;
-
-    return mixdev_ioctl(codec, cmd, arg);
-}
-
-static /*const*/ struct file_operations vrc5477_ac97_mixer_fops = {
-	.owner		= THIS_MODULE,
-	.llseek		= no_llseek,
-	.ioctl		= vrc5477_ac97_ioctl_mixdev,
-	.open		= vrc5477_ac97_open_mixdev,
-	.release	= vrc5477_ac97_release_mixdev,
-};
-
-/* --------------------------------------------------------------------- */
-
-static int drain_dac(struct vrc5477_ac97_state *s, int nonblock)
-{
-	unsigned long flags;
-	int count, tmo;
-	
-	if (!s->dma_dac.ready)
-		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 / 2;
-		vrc5477_ac97_delay(tmo);
-	}
-	if (signal_pending(current))
-		return -ERESTARTSYS;
-	return 0;
-}
-
-/* --------------------------------------------------------------------- */
-
-static inline int
-copy_two_channel_adc_to_user(struct vrc5477_ac97_state *s, 
-		             char *buffer, 
-			     int copyCount)
-{
-	struct dmabuf *db = &s->dma_adc;
-	int bufStart = db->nextOut;
-	for (; copyCount > 0; ) {
-		int i;
-		int count = copyCount;
-		if (count > WORK_BUF_SIZE/2) count = WORK_BUF_SIZE/2;
-		for (i=0; i< count/2; i++) {
-			s->workBuf[i].lchannel = 
-				*(u16*)(db->lbuf + bufStart + i*2);
-			s->workBuf[i].rchannel = 
-				*(u16*)(db->rbuf + bufStart + i*2);
-		}
-		if (copy_to_user(buffer, s->workBuf, count*2)) {
-			return -1;
-		}
-
-		copyCount -= count;
-		bufStart += count;
-		ASSERT(bufStart <= db->fragTotalSize);
-		buffer += count *2;
-	}
-	return 0;
-}
-
-/* return the total bytes that is copied */
-static inline int
-copy_adc_to_user(struct vrc5477_ac97_state *s,
-		 char * buffer,
-		 size_t count,
-		 int avail)
-{
-	struct dmabuf *db = &s->dma_adc;
-	int copyCount=0;
-	int copyFragCount=0;
-	int totalCopyCount = 0;
-	int totalCopyFragCount = 0;
-	unsigned long flags;
-
-	/* adjust count to signel channel byte count */
-	count >>= s->adcChannels - 1;
-
-	/* we may have to "copy" twice as ring buffer wraps around */
-	for (; (avail > 0) && (count > 0); ) {
-		/* determine max possible copy count for single channel */
-		copyCount = count;
-		if (copyCount > avail) {
-			copyCount = avail;
-		}
-		if (copyCount + db->nextOut > db->fragTotalSize) {
-			copyCount = db->fragTotalSize - db->nextOut;
-			ASSERT((copyCount % db->fragSize) == 0);
-		}
-
-		copyFragCount = (copyCount-1) >> db->fragShift;
-		copyFragCount = (copyFragCount+1) << db->fragShift;
-		ASSERT(copyFragCount >= copyCount);
-
-		/* we copy differently based on adc channels */
-		if (s->adcChannels == 1) {
-			if (copy_to_user(buffer, 
-					 db->lbuf + db->nextOut, 
-					 copyCount)) 
-				return -1;
-		} else {
-			/* *sigh* we have to mix two streams into one  */
-			if (copy_two_channel_adc_to_user(s, buffer, copyCount))
-				return -1;
-		}	
-
-		count -= copyCount;
-		totalCopyCount += copyCount;
-		avail -= copyFragCount;
-		totalCopyFragCount += copyFragCount;
-
-		buffer += copyCount << (s->adcChannels-1);
-
-		db->nextOut += copyFragCount;
-		if (db->nextOut >= db->fragTotalSize) {
-			ASSERT(db->nextOut == db->fragTotalSize);
-			db->nextOut = 0;
-		}
-
-		ASSERT((copyFragCount % db->fragSize) == 0);
-		ASSERT( (count == 0) || (copyCount == copyFragCount));
-	}
-
-	spin_lock_irqsave(&s->lock, flags);
-        db->count -= totalCopyFragCount;
-        spin_unlock_irqrestore(&s->lock, flags);
-
-	return totalCopyCount << (s->adcChannels-1);
-}
-
-static ssize_t 
-vrc5477_ac97_read(struct file *file, 
-		  char *buffer,
-		  size_t count, 
-		  loff_t *ppos)
-{
-	struct vrc5477_ac97_state *s = 
-		(struct vrc5477_ac97_state *)file->private_data;
-	struct dmabuf *db = &s->dma_adc;
-	ssize_t ret = 0;
-	unsigned long flags;
-	int copyCount;
-	size_t avail;
-
-	if (!access_ok(VERIFY_WRITE, buffer, count))
-		return -EFAULT;
-
-	ASSERT(db->ready);
-
-	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);
-
-		ASSERT( (avail % db->fragSize) == 0);
-		copyCount = copy_adc_to_user(s, buffer, count, avail);
-		if (copyCount <=0 ) {
-			if (!ret) ret = -EFAULT;
-			return ret;
-		}
-
-		count -= copyCount;
-		buffer += copyCount;
-		ret += copyCount;
-	} // while (count > 0)
-
-	return ret;
-}
-
-static inline int
-copy_two_channel_dac_from_user(struct vrc5477_ac97_state *s, 
-			       const char *buffer, 
-			       int copyCount)
-{
-	struct dmabuf *db = &s->dma_dac;
-	int bufStart = db->nextIn;
-
-	ASSERT(db->ready);
-
-        for (; copyCount > 0; ) {
-                int i;
-                int count = copyCount;
-                if (count > WORK_BUF_SIZE/2) count = WORK_BUF_SIZE/2;
-                if (copy_from_user(s->workBuf, buffer, count*2)) {
-                        return -1;
-                }
-                for (i=0; i< count/2; i++) {
-			*(u16*)(db->lbuf + bufStart + i*2) = 
-				s->workBuf[i].lchannel;
-			*(u16*)(db->rbuf + bufStart + i*2) = 
-				s->workBuf[i].rchannel;
-                }
-
-                copyCount -= count;
-		bufStart += count;
-		ASSERT(bufStart <= db->fragTotalSize);
-                buffer += count *2;
-        }
-        return 0;
-
-}
-
-/* return the total bytes that is copied */
-static inline int
-copy_dac_from_user(struct vrc5477_ac97_state *s, 
-		   const char *buffer, 
-		   size_t count, 
-		   int avail)
-{	
-        struct dmabuf *db = &s->dma_dac;
-        int copyCount=0;
-        int copyFragCount=0;
-        int totalCopyCount = 0;
-        int totalCopyFragCount = 0;
-        unsigned long flags;
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
-	int i;
-#endif
-
-        /* adjust count to signel channel byte count */
-        count >>= s->dacChannels - 1;
-
-        /* we may have to "copy" twice as ring buffer wraps around */
-        for (; (avail > 0) && (count > 0); ) {
-                /* determine max possible copy count for single channel */
-                copyCount = count;
-                if (copyCount > avail) {
-                        copyCount = avail;
-		}
-                if (copyCount + db->nextIn > db->fragTotalSize) {
-                        copyCount = db->fragTotalSize - db->nextIn;
-                        ASSERT(copyCount > 0);
-                }
-
-		copyFragCount = copyCount;
-		ASSERT(copyFragCount >= copyCount);
-
-		/* we copy differently based on the number channels */
-		if (s->dacChannels == 1) {
-			if (copy_from_user(db->lbuf + db->nextIn,
-					   buffer,
-					   copyCount)) 
-				return -1;
-			/* fill gaps with 0 */
-			memset(db->lbuf + db->nextIn + copyCount,
-			       0,
-			       copyFragCount - copyCount);
-		} else {
-			/* we have demux the stream into two separate ones */
-			if (copy_two_channel_dac_from_user(s, buffer, copyCount))
-				return -1;
-			/* fill gaps with 0 */
-			memset(db->lbuf + db->nextIn + copyCount,
-			       0,
-			       copyFragCount - copyCount);
-			memset(db->rbuf + db->nextIn + copyCount,
-			       0,
-			       copyFragCount - copyCount);
-		}
-
-#if defined(VRC5477_AC97_VERBOSE_DEBUG)
-		for (i=0; i< copyFragCount; i+= db->fragSize) {
-			*(u16*)(db->lbuf + db->nextIn + i) = inTicket ++;
-		}
-#endif
-
-		count -= copyCount;
-		totalCopyCount += copyCount;
-		avail -= copyFragCount;
-		totalCopyFragCount += copyFragCount;
-
-		buffer += copyCount << (s->dacChannels - 1);
-
-		db->nextIn += copyFragCount;
-		if (db->nextIn >= db->fragTotalSize) {
-			ASSERT(db->nextIn == db->fragTotalSize);
-			db->nextIn = 0;
-		}
-
-		ASSERT( (count == 0) || (copyCount == copyFragCount));
-	}
-
-	spin_lock_irqsave(&s->lock, flags);
-        db->count += totalCopyFragCount;
-	if (db->stopped) {
-		start_dac(s);
-	}
-
-	/* nextIn should not be equal to nextOut unless we are full */
-	ASSERT( ( (db->count == db->fragTotalSize) && 
-                       (db->nextIn == db->nextOut) ) ||
-                     ( (db->count < db->fragTotalSize) &&
-                       (db->nextIn != db->nextOut) ) );
-
-        spin_unlock_irqrestore(&s->lock, flags);
-
-        return totalCopyCount << (s->dacChannels-1);
-
-}
-
-static ssize_t vrc5477_ac97_write(struct file *file, const char *buffer,
-				  size_t count, loff_t *ppos)
-{
-	struct vrc5477_ac97_state *s = 
-		(struct vrc5477_ac97_state *)file->private_data;
-	struct dmabuf *db = &s->dma_dac;
-	ssize_t ret;
-	unsigned long flags;
-	int copyCount, avail;
-
-	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->fragTotalSize - 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);
-	
-		copyCount = copy_dac_from_user(s, buffer, count, avail);
-		if (copyCount < 0) {
-			if (!ret) ret = -EFAULT;
-			return ret;
-		}
-
-		count -= copyCount;
-		buffer += copyCount;
-		ret += copyCount;
-	} // while (count > 0)
-	
-	return ret;
-}
-
-/* No kernel lock - we have our own spinlock */
-static unsigned int vrc5477_ac97_poll(struct file *file,
-				      struct poll_table_struct *wait)
-{
-	struct vrc5477_ac97_state *s = (struct vrc5477_ac97_state *)file->private_data;
-	unsigned long flags;
-	unsigned int mask = 0;
-
-	if (file->f_mode & FMODE_WRITE)
-		poll_wait(file, &s->dma_dac.wait, wait);
-	if (file->f_mode & FMODE_READ)
-		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 ((signed)s->dma_dac.fragTotalSize >=
-		    s->dma_dac.count + (signed)s->dma_dac.fragSize)
-			mask |= POLLOUT | POLLWRNORM;
-	}
-	spin_unlock_irqrestore(&s->lock, flags);
-	return mask;
-}
-
-#ifdef VRC5477_AC97_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_SETFMT, "SNDCTL_DSP_SETFMT"},
-    {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_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 vrc5477_ac97_ioctl(struct inode *inode, struct file *file,
-			unsigned int cmd, unsigned long arg)
-{
-	struct vrc5477_ac97_state *s = (struct vrc5477_ac97_state *)file->private_data;
-	unsigned long flags;
-	audio_buf_info abinfo;
-	int count;
-	int val, ret;
-
-#ifdef VRC5477_AC97_DEBUG
-	for (count = 0; count < ARRAY_SIZE(ioctl_str); count++) {
-		if (ioctl_str[count].cmd == cmd)
-			break;
-	}
-	if (count < ARRAY_SIZE(ioctl_str))
-		printk(KERN_INFO PFX "ioctl %s\n", ioctl_str[count].str);
-	else
-		printk(KERN_INFO PFX "ioctl unknown, 0x%x\n", 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, (int *)arg);
-		
-	case SNDCTL_DSP_RESET:
-		if (file->f_mode & FMODE_WRITE) {
-			stop_dac(s);
-			synchronize_irq(s->irq);
-			s->dma_dac.count = 0;
-			s->dma_dac.nextIn = s->dma_dac.nextOut = 0;
-		}
-		if (file->f_mode & FMODE_READ) {
-			stop_adc(s);
-			synchronize_irq(s->irq);
-			s->dma_adc.count = 0;
-			s->dma_adc.nextIn = s->dma_adc.nextOut = 0;
-		}
-		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->adcChannels = 2;
-			else
-				s->adcChannels = 1;
-			if ((ret = prog_dmabuf_adc(s)))
-				return ret;
-		}
-		if (file->f_mode & FMODE_WRITE) {
-			stop_dac(s);
-			if (val)
-				s->dacChannels = 2;
-			else
-				s->dacChannels = 1;
-			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 ( (val != 1) && (val != 2)) val = 2;
-
-			if (file->f_mode & FMODE_READ) {
-				stop_adc(s);
-				s->dacChannels = val;
-				if ((ret = prog_dmabuf_adc(s)))
-					return ret;
-			}
-			if (file->f_mode & FMODE_WRITE) {
-				stop_dac(s);
-				s->dacChannels = val;
-				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, (int *)arg);
-		
-	case SNDCTL_DSP_SETFMT: /* Selects ONE fmt*/
-		if (get_user(val, (int *)arg))
-			return -EFAULT;
-		if (val != AFMT_QUERY) {
-			if (val != AFMT_S16_LE) return -EINVAL;
-			if (file->f_mode & FMODE_READ) {
-				stop_adc(s);
-				if ((ret = prog_dmabuf_adc(s)))
-					return ret;
-			}
-			if (file->f_mode & FMODE_WRITE) {
-				stop_dac(s);
-				if ((ret = prog_dmabuf_dac(s)))
-					return ret;
-			}
-		} else {
-			val = AFMT_S16_LE;
-		}
-		return put_user(val, (int *)arg);
-		
-	case SNDCTL_DSP_POST:
-		return 0;
-
-	case SNDCTL_DSP_GETTRIGGER:
-	case SNDCTL_DSP_SETTRIGGER:
-		/* NO trigger */
-		return -EINVAL;
-
-	case SNDCTL_DSP_GETOSPACE:
-		if (!(file->f_mode & FMODE_WRITE))
-			return -EINVAL;
-		abinfo.fragsize = s->dma_dac.fragSize << (s->dacChannels-1);
-		spin_lock_irqsave(&s->lock, flags);
-		count = s->dma_dac.count;
-		spin_unlock_irqrestore(&s->lock, flags);
-		abinfo.bytes = (s->dma_dac.fragTotalSize - count) << 
-			(s->dacChannels-1);
-		abinfo.fragstotal = s->dma_dac.numFrag;
-		abinfo.fragments = abinfo.bytes >> s->dma_dac.fragShift >> 
-			(s->dacChannels-1);      
-		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 << (s->adcChannels-1);
-		spin_lock_irqsave(&s->lock, flags);
-		count = s->dma_adc.count;
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		abinfo.bytes = count << (s->adcChannels-1);
-		abinfo.fragstotal = s->dma_adc.numFrag;
-		abinfo.fragments = (abinfo.bytes >> s->dma_adc.fragShift) >>
-			(s->adcChannels-1);      
-		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;
-		spin_unlock_irqrestore(&s->lock, flags);
-		return put_user(count, (int *)arg);
-
-	case SNDCTL_DSP_GETIPTR:
-	case SNDCTL_DSP_GETOPTR:
-		/* we cannot get DMA ptr */
-		return -EINVAL;
-
-	case SNDCTL_DSP_GETBLKSIZE:
-		if (file->f_mode & FMODE_WRITE)
-			return put_user(s->dma_dac.fragSize << (s->dacChannels-1), (int *)arg);
-		else
-			return put_user(s->dma_adc.fragSize << (s->adcChannels-1), (int *)arg);
-
-	case SNDCTL_DSP_SETFRAGMENT:
-		/* we ignore fragment size request */
-		return 0;
-
-	case SNDCTL_DSP_SUBDIVIDE:
-		/* what is this for? [jsun] */
-		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->adcChannels, (int *)arg);
-		else
-			return put_user(s->dacChannels ? 2 : 1, (int *)arg);
-	    
-	case SOUND_PCM_READ_BITS:
-		return put_user(16, (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 vrc5477_ac97_open(struct inode *inode, struct file *file)
-{
-	int minor = iminor(inode);
-	DECLARE_WAITQUEUE(wait, current);
-	unsigned long flags;
-	struct list_head *list;
-	struct vrc5477_ac97_state *s;
-	int ret=0;
-
-	nonseekable_open(inode, file);    
-	for (list = devs.next; ; list = list->next) {
-		if (list == &devs)
-			return -ENODEV;
-		s = list_entry(list, struct vrc5477_ac97_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) {
-		/* set default settings */
-		set_adc_rate(s, 48000);
-		s->adcChannels = 2;
-
-		ret = prog_dmabuf_adc(s);
-		if (ret) goto bailout;
-	}
-	if (file->f_mode & FMODE_WRITE) {
-		/* set default settings */
-		set_dac_rate(s, 48000);
-		s->dacChannels = 2;
-
-		ret = prog_dmabuf_dac(s);
-		if (ret) goto bailout;
-	}
-
-	s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
-
- bailout:
-	spin_unlock_irqrestore(&s->lock, flags);
-
-	mutex_unlock(&s->open_mutex);
-	return ret;
-}
-
-static int vrc5477_ac97_release(struct inode *inode, struct file *file)
-{
-	struct vrc5477_ac97_state *s = 
-		(struct vrc5477_ac97_state *)file->private_data;
-
-	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 vrc5477_ac97_audio_fops = {
-	.owner		= THIS_MODULE,
-	.llseek		= no_llseek,
-	.read		= vrc5477_ac97_read,
-	.write		= vrc5477_ac97_write,
-	.poll		= vrc5477_ac97_poll,
-	.ioctl		= vrc5477_ac97_ioctl,
-	// .mmap	= vrc5477_ac97_mmap,
-	.open		= vrc5477_ac97_open,
-	.release	= vrc5477_ac97_release,
-};
-
-
-/* --------------------------------------------------------------------- */
-
-
-/* --------------------------------------------------------------------- */
-
-/*
- * for debugging purposes, we'll create a proc device that dumps the
- * CODEC chipstate
- */
-
-#ifdef VRC5477_AC97_DEBUG
-
-struct {
-       const char *regname;
-       unsigned regaddr;
-} vrc5477_ac97_regs[] = {
-	{"VRC5477_INT_STATUS", VRC5477_INT_STATUS},
-	{"VRC5477_CODEC_WR", VRC5477_CODEC_WR},
-	{"VRC5477_CODEC_RD", VRC5477_CODEC_RD},
-	{"VRC5477_CTRL", VRC5477_CTRL},
-	{"VRC5477_ACLINK_CTRL", VRC5477_ACLINK_CTRL},
-	{"VRC5477_INT_MASK", VRC5477_INT_MASK},
-	{"VRC5477_DAC1_CTRL", VRC5477_DAC1_CTRL},
-	{"VRC5477_DAC1L", VRC5477_DAC1L},
-	{"VRC5477_DAC1_BADDR", VRC5477_DAC1_BADDR},
-	{"VRC5477_DAC2_CTRL", VRC5477_DAC2_CTRL},
-	{"VRC5477_DAC2L", VRC5477_DAC2L},
-	{"VRC5477_DAC2_BADDR", VRC5477_DAC2_BADDR},
-	{"VRC5477_DAC3_CTRL", VRC5477_DAC3_CTRL},
-	{"VRC5477_DAC3L", VRC5477_DAC3L},
-	{"VRC5477_DAC3_BADDR", VRC5477_DAC3_BADDR},
-	{"VRC5477_ADC1_CTRL", VRC5477_ADC1_CTRL},
-	{"VRC5477_ADC1L", VRC5477_ADC1L},
-	{"VRC5477_ADC1_BADDR", VRC5477_ADC1_BADDR},
-	{"VRC5477_ADC2_CTRL", VRC5477_ADC2_CTRL},
-	{"VRC5477_ADC2L", VRC5477_ADC2L},
-	{"VRC5477_ADC2_BADDR", VRC5477_ADC2_BADDR},
-	{"VRC5477_ADC3_CTRL", VRC5477_ADC3_CTRL},
-	{"VRC5477_ADC3L", VRC5477_ADC3L},
-	{"VRC5477_ADC3_BADDR", VRC5477_ADC3_BADDR},
-	{NULL, 0x0}
-};
-
-static int proc_vrc5477_ac97_dump (char *buf, char **start, off_t fpos,
-				   int length, int *eof, void *data)
-{
-	struct vrc5477_ac97_state *s;
-	int cnt, len = 0;
-
-	if (list_empty(&devs))
-		return 0;
-	s = list_entry(devs.next, struct vrc5477_ac97_state, devs);
-
-	/* print out header */
-	len += sprintf(buf + len, "\n\t\tVrc5477 Audio Debug\n\n");
-
-	// print out digital controller state
-	len += sprintf (buf + len, "NEC Vrc5477 Audio Controller registers\n");
-	len += sprintf (buf + len, "---------------------------------\n");
-	for (cnt=0; vrc5477_ac97_regs[cnt].regname != NULL; cnt++) {
-		len+= sprintf (buf + len, "%-20s = %08x\n",
-			       vrc5477_ac97_regs[cnt].regname,
-			       inl(s->io + vrc5477_ac97_regs[cnt].regaddr));
-	}
-   
-	/* print out driver state */
-	len += sprintf (buf + len, "NEC Vrc5477 Audio driver states\n");
-	len += sprintf (buf + len, "---------------------------------\n");
-	len += sprintf (buf + len, "dacChannels  = %d\n", s->dacChannels);
-	len += sprintf (buf + len, "adcChannels  = %d\n", s->adcChannels);
-	len += sprintf (buf + len, "dacRate  = %d\n", s->dacRate);
-	len += sprintf (buf + len, "adcRate  = %d\n", s->adcRate);
-
-	len += sprintf (buf + len, "dma_dac is %s ready\n",  
-	                s->dma_dac.ready? "" : "not");
-        if (s->dma_dac.ready) {
-		len += sprintf (buf + len, "dma_dac is %s stopped.\n",  
-	                        s->dma_dac.stopped? "" : "not");
-		len += sprintf (buf + len, "dma_dac.fragSize = %x\n", 
-                                s->dma_dac.fragSize);
-		len += sprintf (buf + len, "dma_dac.fragShift = %x\n", 
-                                s->dma_dac.fragShift);
-		len += sprintf (buf + len, "dma_dac.numFrag = %x\n", 
-                                s->dma_dac.numFrag);
-		len += sprintf (buf + len, "dma_dac.fragTotalSize = %x\n", 
-                                s->dma_dac.fragTotalSize);
-		len += sprintf (buf + len, "dma_dac.nextIn = %x\n", 
-                                s->dma_dac.nextIn);
-		len += sprintf (buf + len, "dma_dac.nextOut = %x\n", 
-                                s->dma_dac.nextOut);
-		len += sprintf (buf + len, "dma_dac.count = %x\n", 
-                                s->dma_dac.count);
-	}
-
-	len += sprintf (buf + len, "dma_adc is %s ready\n",  
-	                s->dma_adc.ready? "" : "not");
-        if (s->dma_adc.ready) {
-		len += sprintf (buf + len, "dma_adc is %s stopped.\n",  
-	                        s->dma_adc.stopped? "" : "not");
-		len += sprintf (buf + len, "dma_adc.fragSize = %x\n", 
-                                s->dma_adc.fragSize);
-		len += sprintf (buf + len, "dma_adc.fragShift = %x\n", 
-                                s->dma_adc.fragShift);
-		len += sprintf (buf + len, "dma_adc.numFrag = %x\n", 
-                                s->dma_adc.numFrag);
-		len += sprintf (buf + len, "dma_adc.fragTotalSize = %x\n", 
-                                s->dma_adc.fragTotalSize);
-		len += sprintf (buf + len, "dma_adc.nextIn = %x\n", 
-                                s->dma_adc.nextIn);
-		len += sprintf (buf + len, "dma_adc.nextOut = %x\n", 
-                                s->dma_adc.nextOut);
-		len += sprintf (buf + len, "dma_adc.count = %x\n", 
-                                s->dma_adc.count);
-	}
-	 
-	/* 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 /* VRC5477_AC97_DEBUG */
-
-/* --------------------------------------------------------------------- */
-
-/* maximum number of devices; only used for command line params */
-#define NR_DEVICE 5
-
-static unsigned int devindex;
-
-MODULE_AUTHOR("Monta Vista Software, jsun@mvista.com or jsun@junsun.net");
-MODULE_DESCRIPTION("NEC Vrc5477 audio (AC97) Driver");
-MODULE_LICENSE("GPL");
-
-static int __devinit vrc5477_ac97_probe(struct pci_dev *pcidev,
-					const struct pci_device_id *pciid)
-{
-	struct vrc5477_ac97_state *s;
-#ifdef VRC5477_AC97_DEBUG
-	char proc_str[80];
-#endif
-
-	if (pcidev->irq == 0) 
-		return -1;
-
-	if (!(s = kzalloc(sizeof(struct vrc5477_ac97_state), GFP_KERNEL))) {
-		printk(KERN_ERR PFX "alloc of device struct failed\n");
-		return -1;
-	}
-
-	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->codec = ac97_alloc_codec();
-
-	s->codec->private_data = s;
-	s->codec->id = 0;
-	s->codec->codec_read = rdcodec;
-	s->codec->codec_write = wrcodec;
-	s->codec->codec_wait = waitcodec;
-
-	/* setting some other default values such as
-	 * adcChannels, adcRate is done in open() so that
-         * no persistent state across file opens.
-	 */
-
-	/* test if get response from ac97, if not return */
-        if (ac97_codec_not_present(s->codec)) {
-		printk(KERN_ERR PFX "no ac97 codec\n");
-		goto err_region;
-
-        }
-
-	/* test if get response from ac97, if not return */
-        if (ac97_codec_not_present(&(s->codec))) {
-		printk(KERN_ERR PFX "no ac97 codec\n");
-		goto err_region;
-
-        }
-
-	if (!request_region(s->io, pci_resource_len(pcidev,0),
-			    VRC5477_AC97_MODULE_NAME)) {
-		printk(KERN_ERR PFX "io ports %#lx->%#lx in use\n",
-		       s->io, s->io + pci_resource_len(pcidev,0)-1);
-		goto err_region;
-	}
-	if (request_irq(s->irq, vrc5477_ac97_interrupt, IRQF_DISABLED,
-			VRC5477_AC97_MODULE_NAME, s)) {
-		printk(KERN_ERR PFX "irq %u in use\n", s->irq);
-		goto err_irq;
-	}
-
-	printk(KERN_INFO PFX "IO at %#lx, IRQ %d\n", s->io, s->irq);
-
-	/* register devices */
-	if ((s->dev_audio = register_sound_dsp(&vrc5477_ac97_audio_fops, -1)) < 0)
-		goto err_dev1;
-	if ((s->codec->dev_mixer =
-	     register_sound_mixer(&vrc5477_ac97_mixer_fops, -1)) < 0)
-		goto err_dev2;
-
-#ifdef VRC5477_AC97_DEBUG
-	/* initialize the debug proc device */
-	s->ps = create_proc_read_entry(VRC5477_AC97_MODULE_NAME, 0, NULL,
-				       proc_vrc5477_ac97_dump, NULL);
-#endif /* VRC5477_AC97_DEBUG */
-	
-	/* enable pci io and bus mastering */
-	if (pci_enable_device(pcidev))
-		goto err_dev3;
-	pci_set_master(pcidev);
-
-	/* cold reset the AC97 */
-	outl(VRC5477_ACLINK_CTRL_RST_ON | VRC5477_ACLINK_CTRL_RST_TIME,
-	     s->io + VRC5477_ACLINK_CTRL);
-	while (inl(s->io + VRC5477_ACLINK_CTRL) & VRC5477_ACLINK_CTRL_RST_ON);
-
-	/* codec init */
-	if (!ac97_probe_codec(s->codec))
-		goto err_dev3;
-
-#ifdef VRC5477_AC97_DEBUG
-	sprintf(proc_str, "driver/%s/%d/ac97", 
-		VRC5477_AC97_MODULE_NAME, s->codec->id);
-	s->ac97_ps = create_proc_read_entry (proc_str, 0, NULL,
-					     ac97_read_proc, s->codec);
-	/* TODO : why this proc file does not show up? */
-#endif
-
-	/* Try to enable variable rate audio mode. */
-	wrcodec(s->codec, AC97_EXTENDED_STATUS,
-		rdcodec(s->codec, AC97_EXTENDED_STATUS) | AC97_EXTSTAT_VRA);
-	/* Did we enable it? */
-	if(rdcodec(s->codec, AC97_EXTENDED_STATUS) & AC97_EXTSTAT_VRA)
-		s->extended_status |= AC97_EXTSTAT_VRA;
-	else {
-		s->dacRate = 48000;
-		printk(KERN_INFO PFX "VRA mode not enabled; rate fixed at %d.",
-			s->dacRate);
-	}
-
-        /* let us get the default volumne louder */
-        wrcodec(s->codec, 0x2, 0x1010);	/* master volume, middle */
-        wrcodec(s->codec, 0xc, 0x10);		/* phone volume, middle */
-        // wrcodec(s->codec, 0xe, 0x10);		/* misc volume, middle */
-	wrcodec(s->codec, 0x10, 0x8000);	/* line-in 2 line-out disable */
-        wrcodec(s->codec, 0x18, 0x0707);	/* PCM out (line out) middle */
-
-
-	/* by default we select line in the input */
-	wrcodec(s->codec, 0x1a, 0x0404);
-	wrcodec(s->codec, 0x1c, 0x0f0f);
-	wrcodec(s->codec, 0x1e, 0x07);
-
-	/* enable the master interrupt but disable all others */
-	outl(VRC5477_INT_MASK_NMASK, s->io + VRC5477_INT_MASK);
-
-	/* 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:
-	printk(KERN_ERR PFX "cannot register misc device\n");
-	free_irq(s->irq, s);
- err_irq:
-	release_region(s->io, pci_resource_len(pcidev,0));
- err_region:
- 	ac97_release_codec(codec);
-	kfree(s);
-	return -1;
-}
-
-static void __devexit vrc5477_ac97_remove(struct pci_dev *dev)
-{
-	struct vrc5477_ac97_state *s = pci_get_drvdata(dev);
-
-	if (!s)
-		return;
-	list_del(&s->devs);
-
-#ifdef VRC5477_AC97_DEBUG
-	if (s->ps)
-		remove_proc_entry(VRC5477_AC97_MODULE_NAME, NULL);
-#endif /* VRC5477_AC97_DEBUG */
-
-	synchronize_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);
-	ac97_release_codec(s->codec);
-	kfree(s);
-	pci_set_drvdata(dev, NULL);
-}
-
-
-static struct pci_device_id id_table[] = {
-    { PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_VRC5477_AC97, 
-      PCI_ANY_ID, PCI_ANY_ID, 0, 0 },
-    { 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, id_table);
-
-static struct pci_driver vrc5477_ac97_driver = {
-	.name		= VRC5477_AC97_MODULE_NAME,
-	.id_table	= id_table,
-	.probe		= vrc5477_ac97_probe,
-	.remove		= __devexit_p(vrc5477_ac97_remove)
-};
-
-static int __init init_vrc5477_ac97(void)
-{
-	printk("Vrc5477 AC97 driver: version v0.2 time " __TIME__ " " __DATE__ " by Jun Sun\n");
-	return pci_register_driver(&vrc5477_ac97_driver);
-}
-
-static void __exit cleanup_vrc5477_ac97(void)
-{
-	printk(KERN_INFO PFX "unloading\n");
-	pci_unregister_driver(&vrc5477_ac97_driver);
-}
-
-module_init(init_vrc5477_ac97);
-module_exit(cleanup_vrc5477_ac97);
-