Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 5794 insertions, 0 deletions

diff --git a/sound/oss/cs46xx.c b/sound/oss/cs46xx.c
new file mode 100644
index 000000000000..8ce6b48f1881
--- /dev/null
+++ b/sound/oss/cs46xx.c
@@ -0,0 +1,5794 @@
+/*
+ *	Crystal SoundFusion CS46xx driver
+ *
+ *	Copyright 1998-2001 Cirrus Logic Corporation <pcaudio@crystal.cirrus.com>
+ *						<twoller@crystal.cirrus.com>
+ *	Copyright 1999-2000 Jaroslav Kysela <perex@suse.cz>
+ *	Copyright 2000 Alan Cox <alan@redhat.com>
+ *
+ *	The core of this code is taken from the ALSA project driver by 
+ *	Jaroslav. Please send Jaroslav the credit for the driver and 
+ *	report bugs in this port to <alan@redhat.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 program is distributed in the hope that it will be useful,
+ *	but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *	GNU General Public License for more details.
+ *
+ *	You should have received a copy of the GNU General Public License
+ *	along with this program; if not, write to the Free Software
+ *	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *	Current maintainers:
+ *		Cirrus Logic Corporation, Thomas Woller (tw)
+ *			<twoller@crystal.cirrus.com>
+ *		Nils Faerber (nf)
+ *			<nils@kernelconcepts.de>
+ *		Thanks to David Pollard for testing.
+ *
+ *	Changes:
+ *	20000909-nf	Changed cs_read, cs_write and drain_dac
+ *	20001025-tw	Separate Playback/Capture structs and buffers.
+ *			Added Scatter/Gather support for Playback.
+ *			Added Capture.
+ *	20001027-nf	Port to kernel 2.4.0-test9, some clean-ups
+ *			Start of powermanagement support (CS46XX_PM).
+ *	20001128-tw	Add module parm for default buffer order.
+ *			added DMA_GFP flag to kmalloc dma buffer allocs.
+ *			backfill silence to eliminate stuttering on
+ *			underruns.
+ *	20001201-tw	add resyncing of swptr on underruns.
+ *	20001205-tw-nf	fixed GETOSPACE ioctl() after open()
+ *	20010113-tw	patch from Hans Grobler general cleanup.
+ *	20010117-tw	2.4.0 pci cleanup, wrapper code for 2.2.16-2.4.0
+ *	20010118-tw	basic PM support for 2.2.16+ and 2.4.0/2.4.2.
+ *	20010228-dh	patch from David Huggins - cs_update_ptr recursion.
+ *	20010409-tw	add hercules game theatre XP amp code.
+ *	20010420-tw	cleanup powerdown/up code.
+ *	20010521-tw	eliminate pops, and fixes for powerdown.
+ *	20010525-tw	added fixes for thinkpads with powerdown logic.
+ *	20010723-sh     patch from Horms (Simon Horman) -
+ *	                SOUND_PCM_READ_BITS returns bits as set in driver
+ *	                rather than a logical or of the possible values.
+ *	                Various ioctls handle the case where the device
+ *	                is open for reading or writing but not both better.
+ *
+ *	Status:
+ *	Playback/Capture supported from 8k-48k.
+ *	16Bit Signed LE & 8Bit Unsigned, with Mono or Stereo supported.
+ *
+ *	APM/PM - 2.2.x APM is enabled and functioning fine. APM can also
+ *	be enabled for 2.4.x by modifying the CS46XX_ACPI_SUPPORT macro
+ *	definition.
+ *
+ *      Hercules Game Theatre XP - the EGPIO2 pin controls the external Amp,
+ *	so, use the drain/polarity to enable.  
+ *	hercules_egpio_disable set to 1, will force a 0 to EGPIODR.
+ *
+ *	VTB Santa Cruz - the GPIO7/GPIO8 on the Secondary Codec control
+ *	the external amplifier for the "back" speakers, since we do not
+ *	support the secondary codec then this external amp is also not
+ *	turned on.
+ */
+ 
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#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/bitops.h>
+#include <linux/init.h>
+#include <linux/poll.h>
+#include <linux/ac97_codec.h>
+
+#include <asm/io.h>
+#include <asm/dma.h>
+#include <asm/uaccess.h>
+
+#include "cs46xxpm-24.h"
+#include "cs46xx_wrapper-24.h"
+#include "cs461x.h"
+
+/* MIDI buffer sizes */
+#define CS_MIDIINBUF  500
+#define CS_MIDIOUTBUF 500
+
+#define ADC_RUNNING	1
+#define DAC_RUNNING	2
+
+#define CS_FMT_16BIT	1		/* These are fixed in fact */
+#define CS_FMT_STEREO	2
+#define CS_FMT_MASK	3
+
+#define CS_TYPE_ADC	1
+#define CS_TYPE_DAC	2
+
+#define CS_TRUE 	1
+#define CS_FALSE 	0
+
+#define CS_INC_USE_COUNT(m) (atomic_inc(m))
+#define CS_DEC_USE_COUNT(m) (atomic_dec(m))
+#define CS_DEC_AND_TEST(m) (atomic_dec_and_test(m))
+#define CS_IN_USE(m) (atomic_read(m) != 0)
+
+#define CS_DBGBREAKPOINT {__asm__("INT $3");}
+/*
+ *	CS461x definitions
+ */
+ 
+#define CS461X_BA0_SIZE		0x2000
+#define CS461X_BA1_DATA0_SIZE	0x3000
+#define CS461X_BA1_DATA1_SIZE	0x3800
+#define CS461X_BA1_PRG_SIZE	0x7000
+#define CS461X_BA1_REG_SIZE	0x0100
+
+#define GOF_PER_SEC	200
+
+#define CSDEBUG_INTERFACE 1
+#define CSDEBUG 1
+/*
+ * Turn on/off debugging compilation by using 1/0 respectively for CSDEBUG
+ *
+ *
+ * CSDEBUG is usual mode is set to 1, then use the
+ * cs_debuglevel and cs_debugmask to turn on or off debugging.
+ * Debug level of 1 has been defined to be kernel errors and info
+ * that should be printed on any released driver.
+ */
+#if CSDEBUG
+#define CS_DBGOUT(mask,level,x) if((cs_debuglevel >= (level)) && ((mask) & cs_debugmask)) {x;} 
+#else
+#define CS_DBGOUT(mask,level,x) 
+#endif
+/*
+ * cs_debugmask areas
+ */
+#define CS_INIT	 	0x00000001		/* initialization and probe functions */
+#define CS_ERROR 	0x00000002		/* tmp debugging bit placeholder */
+#define CS_INTERRUPT	0x00000004		/* interrupt handler (separate from all other) */
+#define CS_FUNCTION 	0x00000008		/* enter/leave functions */
+#define CS_WAVE_WRITE 	0x00000010		/* write information for wave */
+#define CS_WAVE_READ 	0x00000020		/* read information for wave */
+#define CS_MIDI_WRITE 	0x00000040		/* write information for midi */
+#define CS_MIDI_READ 	0x00000080		/* read information for midi */
+#define CS_MPU401_WRITE 0x00000100		/* write information for mpu401 */
+#define CS_MPU401_READ 	0x00000200		/* read information for mpu401 */
+#define CS_OPEN		0x00000400		/* all open functions in the driver */
+#define CS_RELEASE	0x00000800		/* all release functions in the driver */
+#define CS_PARMS	0x00001000		/* functional and operational parameters */
+#define CS_IOCTL	0x00002000		/* ioctl (non-mixer) */
+#define CS_PM		0x00004000		/* PM */
+#define CS_TMP		0x10000000		/* tmp debug mask bit */
+
+#define CS_IOCTL_CMD_SUSPEND	0x1	// suspend
+#define CS_IOCTL_CMD_RESUME	0x2	// resume
+
+#if CSDEBUG
+static unsigned long cs_debuglevel=1;			/* levels range from 1-9 */
+module_param(cs_debuglevel, ulong, 0644);
+static unsigned long cs_debugmask=CS_INIT | CS_ERROR;	/* use CS_DBGOUT with various mask values */
+module_param(cs_debugmask, ulong, 0644);
+#endif
+static unsigned long hercules_egpio_disable;  /* if non-zero set all EGPIO to 0 */
+module_param(hercules_egpio_disable, ulong, 0);
+static unsigned long initdelay=700;  /* PM delay in millisecs */
+module_param(initdelay, ulong, 0);
+static unsigned long powerdown=-1;  /* turn on/off powerdown processing in driver */
+module_param(powerdown, ulong, 0);
+#define DMABUF_DEFAULTORDER 3
+static unsigned long defaultorder=DMABUF_DEFAULTORDER;
+module_param(defaultorder, ulong, 0);
+
+static int external_amp;
+module_param(external_amp, bool, 0);
+static int thinkpad;
+module_param(thinkpad, bool, 0);
+
+/*
+* set the powerdown module parm to 0 to disable all 
+* powerdown. also set thinkpad to 1 to disable powerdown, 
+* but also to enable the clkrun functionality.
+*/
+static unsigned cs_powerdown=1;
+static unsigned cs_laptop_wait=1;
+
+/* An instance of the 4610 channel */
+struct cs_channel 
+{
+	int used;
+	int num;
+	void *state;
+};
+
+#define CS46XX_MAJOR_VERSION "1"
+#define CS46XX_MINOR_VERSION "28"
+
+#ifdef __ia64__
+#define CS46XX_ARCH	     	"64"	//architecture key
+#else
+#define CS46XX_ARCH	     	"32"	//architecture key
+#endif
+
+static struct list_head cs46xx_devs = { &cs46xx_devs, &cs46xx_devs };
+
+/* magic numbers to protect our data structures */
+#define CS_CARD_MAGIC		0x43525553 /* "CRUS" */
+#define CS_STATE_MAGIC		0x4c4f4749 /* "LOGI" */
+#define NR_HW_CH		3
+
+/* maxinum number of AC97 codecs connected, AC97 2.0 defined 4 */
+#define NR_AC97		2
+
+static const unsigned sample_size[] = { 1, 2, 2, 4 };
+static const unsigned sample_shift[] = { 0, 1, 1, 2 };
+
+/* "software" or virtual channel, an instance of opened /dev/dsp */
+struct cs_state {
+	unsigned int magic;
+	struct cs_card *card;	/* Card info */
+
+	/* single open lock mechanism, only used for recording */
+	struct semaphore open_sem;
+	wait_queue_head_t open_wait;
+
+	/* file mode */
+	mode_t open_mode;
+
+	/* virtual channel number */
+	int virt;
+	
+	struct dmabuf {
+		/* wave sample stuff */
+		unsigned int rate;
+		unsigned char fmt, enable;
+
+		/* hardware channel */
+		struct cs_channel *channel;
+		int pringbuf;		/* Software ring slot */
+		void *pbuf;		/* 4K hardware DMA buffer */
+
+		/* OSS buffer management stuff */
+		void *rawbuf;
+		dma_addr_t dma_handle;
+		unsigned buforder;
+		unsigned numfrag;
+		unsigned fragshift;
+		unsigned divisor;
+		unsigned type;
+		void *tmpbuff;			/* tmp buffer for sample conversions */
+		dma_addr_t dmaaddr;
+		dma_addr_t dmaaddr_tmpbuff;
+		unsigned buforder_tmpbuff;	/* Log base 2 of size in bytes.. */
+
+		/* our buffer acts like a circular ring */
+		unsigned hwptr;		/* where dma last started, updated by update_ptr */
+		unsigned swptr;		/* where driver last clear/filled, updated by read/write */
+		int count;		/* bytes to be comsumed or been generated by dma machine */
+		unsigned total_bytes;	/* total bytes dmaed by hardware */
+		unsigned blocks;	/* total blocks */
+
+		unsigned error;		/* number of over/underruns */
+		unsigned underrun;	/* underrun pending before next write has occurred */
+		wait_queue_head_t wait;	/* put process on wait queue when no more space in buffer */
+
+		/* redundant, but makes calculations easier */
+		unsigned fragsize;
+		unsigned dmasize;
+		unsigned fragsamples;
+
+		/* OSS stuff */
+		unsigned mapped:1;
+		unsigned ready:1;
+		unsigned endcleared:1;
+		unsigned SGok:1;
+		unsigned update_flag;
+		unsigned ossfragshift;
+		int ossmaxfrags;
+		unsigned subdivision;
+	} dmabuf;
+	/* Guard against mmap/write/read races */
+	struct semaphore sem;
+};
+
+struct cs_card {
+	struct cs_channel channel[2];
+	unsigned int magic;
+
+	/* We keep cs461x cards in a linked list */
+	struct cs_card *next;
+
+	/* The cs461x has a certain amount of cross channel interaction
+	   so we use a single per card lock */
+	spinlock_t lock;
+	
+	/* Keep AC97 sane */
+	spinlock_t ac97_lock;
+
+	/* mixer use count */
+	atomic_t mixer_use_cnt;
+
+	/* PCI device stuff */
+	struct pci_dev * pci_dev;
+	struct list_head list;
+
+	unsigned int pctl, cctl;	/* Hardware DMA flag sets */
+
+	/* soundcore stuff */
+	int dev_audio;
+	int dev_midi;
+
+	/* structures for abstraction of hardware facilities, codecs, banks and channels*/
+	struct ac97_codec *ac97_codec[NR_AC97];
+	struct cs_state *states[2];
+
+	u16 ac97_features;
+	
+	int amplifier;			/* Amplifier control */
+	void (*amplifier_ctrl)(struct cs_card *, int);
+	void (*amp_init)(struct cs_card *);
+	
+	int active;			/* Active clocking */
+	void (*active_ctrl)(struct cs_card *, int);
+	
+	/* hardware resources */
+	unsigned long ba0_addr;
+	unsigned long ba1_addr;
+	u32 irq;
+	
+	/* mappings */
+	void __iomem *ba0;
+	union
+	{
+		struct
+		{
+			u8 __iomem *data0;
+			u8 __iomem *data1;
+			u8 __iomem *pmem;
+			u8 __iomem *reg;
+		} name;
+		u8 __iomem *idx[4];
+	} ba1;
+	
+	/* Function support */
+	struct cs_channel *(*alloc_pcm_channel)(struct cs_card *);
+	struct cs_channel *(*alloc_rec_pcm_channel)(struct cs_card *);
+	void (*free_pcm_channel)(struct cs_card *, int chan);
+
+	/* /dev/midi stuff */
+	struct {
+		unsigned ird, iwr, icnt;
+		unsigned ord, owr, ocnt;
+		wait_queue_head_t open_wait;
+		wait_queue_head_t iwait;
+		wait_queue_head_t owait;
+		spinlock_t lock;
+		unsigned char ibuf[CS_MIDIINBUF];
+		unsigned char obuf[CS_MIDIOUTBUF];
+		mode_t open_mode;
+		struct semaphore open_sem;
+	} midi;
+	struct cs46xx_pm pm;
+};
+
+static int cs_open_mixdev(struct inode *inode, struct file *file);
+static int cs_release_mixdev(struct inode *inode, struct file *file);
+static int cs_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd,
+				unsigned long arg);
+static int cs_hardware_init(struct cs_card *card);
+static int cs46xx_powerup(struct cs_card *card, unsigned int type);
+static int cs461x_powerdown(struct cs_card *card, unsigned int type, int suspendflag);
+static void cs461x_clear_serial_FIFOs(struct cs_card *card, int type);
+static int cs46xx_suspend_tbl(struct pci_dev *pcidev, pm_message_t state);
+static int cs46xx_resume_tbl(struct pci_dev *pcidev);
+
+#ifndef CS46XX_ACPI_SUPPORT
+static int cs46xx_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data);
+#endif
+
+#if CSDEBUG
+
+/* DEBUG ROUTINES */
+
+#define SOUND_MIXER_CS_GETDBGLEVEL 	_SIOWR('M',120, int)
+#define SOUND_MIXER_CS_SETDBGLEVEL 	_SIOWR('M',121, int)
+#define SOUND_MIXER_CS_GETDBGMASK 	_SIOWR('M',122, int)
+#define SOUND_MIXER_CS_SETDBGMASK 	_SIOWR('M',123, int)
+#define SOUND_MIXER_CS_APM	 	_SIOWR('M',124, int)
+
+static void printioctl(unsigned int x)
+{
+    unsigned int i;
+    unsigned char vidx;
+	/* these values are incorrect for the ac97 driver, fix.
+         * Index of mixtable1[] member is Device ID 
+         * and must be <= SOUND_MIXER_NRDEVICES.
+         * Value of array member is index into s->mix.vol[]
+         */
+        static const unsigned char mixtable1[SOUND_MIXER_NRDEVICES] = {
+                [SOUND_MIXER_PCM]     = 1,   /* voice */
+                [SOUND_MIXER_LINE1]   = 2,   /* AUX */
+                [SOUND_MIXER_CD]      = 3,   /* CD */
+                [SOUND_MIXER_LINE]    = 4,   /* Line */
+                [SOUND_MIXER_SYNTH]   = 5,   /* FM */
+                [SOUND_MIXER_MIC]     = 6,   /* Mic */
+                [SOUND_MIXER_SPEAKER] = 7,   /* Speaker */
+                [SOUND_MIXER_RECLEV]  = 8,   /* Recording level */
+                [SOUND_MIXER_VOLUME]  = 9    /* Master Volume */
+        };
+        
+    switch(x) 
+    {
+	case SOUND_MIXER_CS_GETDBGMASK:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CS_GETDBGMASK: ") );
+		break;
+	case SOUND_MIXER_CS_GETDBGLEVEL:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CS_GETDBGLEVEL: ") );
+		break;
+	case SOUND_MIXER_CS_SETDBGMASK:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CS_SETDBGMASK: ") );
+		break;
+	case SOUND_MIXER_CS_SETDBGLEVEL:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CS_SETDBGLEVEL: ") );
+		break;
+        case OSS_GETVERSION:
+		CS_DBGOUT(CS_IOCTL, 4, printk("OSS_GETVERSION: ") );
+		break;
+        case SNDCTL_DSP_SYNC:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SYNC: ") );
+		break;
+        case SNDCTL_DSP_SETDUPLEX:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETDUPLEX: ") );
+		break;
+        case SNDCTL_DSP_GETCAPS:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETCAPS: ") );
+		break;
+        case SNDCTL_DSP_RESET:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_RESET: ") );
+		break;
+        case SNDCTL_DSP_SPEED:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SPEED: ") );
+		break;
+        case SNDCTL_DSP_STEREO:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_STEREO: ") );
+		break;
+        case SNDCTL_DSP_CHANNELS:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_CHANNELS: ") );
+		break;
+        case SNDCTL_DSP_GETFMTS: 
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETFMTS: ") );
+		break;
+        case SNDCTL_DSP_SETFMT: 
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETFMT: ") );
+		break;
+        case SNDCTL_DSP_POST:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_POST: ") );
+		break;
+        case SNDCTL_DSP_GETTRIGGER:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETTRIGGER: ") );
+		break;
+        case SNDCTL_DSP_SETTRIGGER:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETTRIGGER: ") );
+		break;
+        case SNDCTL_DSP_GETOSPACE:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOSPACE: ") );
+		break;
+        case SNDCTL_DSP_GETISPACE:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETISPACE: ") );
+		break;
+        case SNDCTL_DSP_NONBLOCK:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_NONBLOCK: ") );
+		break;
+        case SNDCTL_DSP_GETODELAY:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETODELAY: ") );
+		break;
+        case SNDCTL_DSP_GETIPTR:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETIPTR: ") );
+		break;
+        case SNDCTL_DSP_GETOPTR:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETOPTR: ") );
+		break;
+        case SNDCTL_DSP_GETBLKSIZE:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_GETBLKSIZE: ") );
+		break;
+        case SNDCTL_DSP_SETFRAGMENT:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETFRAGMENT: ") );
+		break;
+        case SNDCTL_DSP_SUBDIVIDE:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SUBDIVIDE: ") );
+		break;
+        case SOUND_PCM_READ_RATE:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_RATE: ") );
+		break;
+        case SOUND_PCM_READ_CHANNELS:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_CHANNELS: ") );
+		break;
+        case SOUND_PCM_READ_BITS:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_BITS: ") );
+		break;
+        case SOUND_PCM_WRITE_FILTER:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_WRITE_FILTER: ") );
+		break;
+        case SNDCTL_DSP_SETSYNCRO:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SNDCTL_DSP_SETSYNCRO: ") );
+		break;
+        case SOUND_PCM_READ_FILTER:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_PCM_READ_FILTER: ") );
+		break;
+
+        case SOUND_MIXER_PRIVATE1:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE1: ") );
+		break;
+        case SOUND_MIXER_PRIVATE2:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE2: ") );
+		break;
+        case SOUND_MIXER_PRIVATE3:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE3: ") );
+		break;
+        case SOUND_MIXER_PRIVATE4:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE4: ") );
+		break;
+        case SOUND_MIXER_PRIVATE5:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_PRIVATE5: ") );
+		break;
+        case SOUND_MIXER_INFO:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_INFO: ") );
+		break;
+        case SOUND_OLD_MIXER_INFO:
+		CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_OLD_MIXER_INFO: ") );
+		break;
+
+	default:
+		switch (_IOC_NR(x)) 
+		{
+			case SOUND_MIXER_VOLUME:
+				CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_VOLUME: ") );
+				break;
+			case SOUND_MIXER_SPEAKER:
+				CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_SPEAKER: ") );
+				break;
+			case SOUND_MIXER_RECLEV:
+				CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_RECLEV: ") );
+				break;
+			case SOUND_MIXER_MIC:
+				CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_MIC: ") );
+				break;
+			case SOUND_MIXER_SYNTH:
+				CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_SYNTH: ") );
+				break;
+			case SOUND_MIXER_RECSRC: 
+				CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_RECSRC: ") );
+				break;
+			case SOUND_MIXER_DEVMASK:
+				CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_DEVMASK: ") );
+				break;
+			case SOUND_MIXER_RECMASK:
+				CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_RECMASK: ") );
+				break;
+			case SOUND_MIXER_STEREODEVS: 
+				CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_STEREODEVS: ") );
+				break;
+			case SOUND_MIXER_CAPS:
+				CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_CAPS:") );
+				break;
+			default:
+				i = _IOC_NR(x);
+				if (i >= SOUND_MIXER_NRDEVICES || !(vidx = mixtable1[i]))
+				{
+					CS_DBGOUT(CS_IOCTL, 4, printk("UNKNOWN IOCTL: 0x%.8x NR=%d ",x,i) );
+				}
+				else
+				{
+					CS_DBGOUT(CS_IOCTL, 4, printk("SOUND_MIXER_IOCTL AC9x: 0x%.8x NR=%d ",
+							x,i) );
+				}
+				break;
+		}
+    }
+    CS_DBGOUT(CS_IOCTL, 4, printk("command = 0x%x IOC_NR=%d\n",x, _IOC_NR(x)) );
+}
+#endif
+
+/*
+ *  common I/O routines
+ */
+
+static void cs461x_poke(struct cs_card *codec, unsigned long reg, unsigned int val)
+{
+	writel(val, codec->ba1.idx[(reg >> 16) & 3]+(reg&0xffff));
+}
+
+static unsigned int cs461x_peek(struct cs_card *codec, unsigned long reg)
+{
+	return readl(codec->ba1.idx[(reg >> 16) & 3]+(reg&0xffff));
+}
+
+static void cs461x_pokeBA0(struct cs_card *codec, unsigned long reg, unsigned int val)
+{
+	writel(val, codec->ba0+reg);
+}
+
+static unsigned int cs461x_peekBA0(struct cs_card *codec, unsigned long reg)
+{
+	return readl(codec->ba0+reg);
+}
+
+
+static u16 cs_ac97_get(struct ac97_codec *dev, u8 reg);
+static void cs_ac97_set(struct ac97_codec *dev, u8 reg, u16 data);
+
+static struct cs_channel *cs_alloc_pcm_channel(struct cs_card *card)
+{
+	if(card->channel[1].used==1)
+		return NULL;
+	card->channel[1].used=1;
+	card->channel[1].num=1;
+	return &card->channel[1];
+}
+
+static struct cs_channel *cs_alloc_rec_pcm_channel(struct cs_card *card)
+{
+	if(card->channel[0].used==1)
+		return NULL;
+	card->channel[0].used=1;
+	card->channel[0].num=0;
+	return &card->channel[0];
+}
+
+static void cs_free_pcm_channel(struct cs_card *card, int channel)
+{
+	card->channel[channel].state = NULL;
+	card->channel[channel].used=0;
+}
+
+/*
+ * setup a divisor value to help with conversion from
+ * 16bit Stereo, down to 8bit stereo/mono or 16bit mono.
+ * assign a divisor of 1 if using 16bit Stereo as that is
+ * the only format that the static image will capture.
+ */
+static void cs_set_divisor(struct dmabuf *dmabuf)
+{
+	if(dmabuf->type == CS_TYPE_DAC)
+		dmabuf->divisor = 1;
+	else if( !(dmabuf->fmt & CS_FMT_STEREO) && 
+	    (dmabuf->fmt & CS_FMT_16BIT))
+		dmabuf->divisor = 2;
+	else if( (dmabuf->fmt & CS_FMT_STEREO) && 
+	    !(dmabuf->fmt & CS_FMT_16BIT))
+		dmabuf->divisor = 2;
+	else if( !(dmabuf->fmt & CS_FMT_STEREO) && 
+	    !(dmabuf->fmt & CS_FMT_16BIT))
+		dmabuf->divisor = 4;
+	else
+		dmabuf->divisor = 1;
+
+	CS_DBGOUT(CS_PARMS | CS_FUNCTION, 8, printk(
+		"cs46xx: cs_set_divisor()- %s %d\n",
+			(dmabuf->type == CS_TYPE_ADC) ? "ADC" : "DAC", 
+			dmabuf->divisor) );
+}
+
+/*
+* mute some of the more prevalent registers to avoid popping.
+*/
+static void cs_mute(struct cs_card *card, int state) 
+{
+	struct ac97_codec *dev=card->ac97_codec[0];
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_INFO "cs46xx: cs_mute()+ %s\n",
+		(state == CS_TRUE) ? "Muting" : "UnMuting") );
+
+	if(state == CS_TRUE)
+	{
+	/*
+	* fix pops when powering up on thinkpads
+	*/
+		card->pm.u32AC97_master_volume = (u32)cs_ac97_get( dev, 
+				(u8)BA0_AC97_MASTER_VOLUME); 
+		card->pm.u32AC97_headphone_volume = (u32)cs_ac97_get(dev, 
+				(u8)BA0_AC97_HEADPHONE_VOLUME); 
+		card->pm.u32AC97_master_volume_mono = (u32)cs_ac97_get(dev, 
+				(u8)BA0_AC97_MASTER_VOLUME_MONO); 
+		card->pm.u32AC97_pcm_out_volume = (u32)cs_ac97_get(dev, 
+				(u8)BA0_AC97_PCM_OUT_VOLUME);
+			
+		cs_ac97_set(dev, (u8)BA0_AC97_MASTER_VOLUME, 0x8000);
+		cs_ac97_set(dev, (u8)BA0_AC97_HEADPHONE_VOLUME, 0x8000);
+		cs_ac97_set(dev, (u8)BA0_AC97_MASTER_VOLUME_MONO, 0x8000);
+		cs_ac97_set(dev, (u8)BA0_AC97_PCM_OUT_VOLUME, 0x8000);
+	}
+	else
+	{
+		cs_ac97_set(dev, (u8)BA0_AC97_MASTER_VOLUME, card->pm.u32AC97_master_volume);
+		cs_ac97_set(dev, (u8)BA0_AC97_HEADPHONE_VOLUME, card->pm.u32AC97_headphone_volume);
+		cs_ac97_set(dev, (u8)BA0_AC97_MASTER_VOLUME_MONO, card->pm.u32AC97_master_volume_mono);
+		cs_ac97_set(dev, (u8)BA0_AC97_PCM_OUT_VOLUME, card->pm.u32AC97_pcm_out_volume);
+	}
+	CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_INFO "cs46xx: cs_mute()-\n"));
+}
+
+/* set playback sample rate */
+static unsigned int cs_set_dac_rate(struct cs_state * state, unsigned int rate)
+{	
+	struct dmabuf *dmabuf = &state->dmabuf;
+	unsigned int tmp1, tmp2;
+	unsigned int phiIncr;
+	unsigned int correctionPerGOF, correctionPerSec;
+	unsigned long flags;
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_set_dac_rate()+ %d\n",rate) );
+
+	/*
+	 *  Compute the values used to drive the actual sample rate conversion.
+	 *  The following formulas are being computed, using inline assembly
+	 *  since we need to use 64 bit arithmetic to compute the values:
+	 *
+	 *  phiIncr = floor((Fs,in * 2^26) / Fs,out)
+	 *  correctionPerGOF = floor((Fs,in * 2^26 - Fs,out * phiIncr) /
+         *                                   GOF_PER_SEC)
+         *  ulCorrectionPerSec = Fs,in * 2^26 - Fs,out * phiIncr -M
+         *                       GOF_PER_SEC * correctionPerGOF
+	 *
+	 *  i.e.
+	 *
+	 *  phiIncr:other = dividend:remainder((Fs,in * 2^26) / Fs,out)
+	 *  correctionPerGOF:correctionPerSec =
+	 *      dividend:remainder(ulOther / GOF_PER_SEC)
+	 */
+	tmp1 = rate << 16;
+	phiIncr = tmp1 / 48000;
+	tmp1 -= phiIncr * 48000;
+	tmp1 <<= 10;
+	phiIncr <<= 10;
+	tmp2 = tmp1 / 48000;
+	phiIncr += tmp2;
+	tmp1 -= tmp2 * 48000;
+	correctionPerGOF = tmp1 / GOF_PER_SEC;
+	tmp1 -= correctionPerGOF * GOF_PER_SEC;
+	correctionPerSec = tmp1;
+
+	/*
+	 *  Fill in the SampleRateConverter control block.
+	 */
+	 
+	spin_lock_irqsave(&state->card->lock, flags);
+	cs461x_poke(state->card, BA1_PSRC,
+	  ((correctionPerSec << 16) & 0xFFFF0000) | (correctionPerGOF & 0xFFFF));
+	cs461x_poke(state->card, BA1_PPI, phiIncr);
+	spin_unlock_irqrestore(&state->card->lock, flags);
+	dmabuf->rate = rate;
+	
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_set_dac_rate()- %d\n",rate) );
+	return rate;
+}
+
+/* set recording sample rate */
+static unsigned int cs_set_adc_rate(struct cs_state * state, unsigned int rate)
+{
+	struct dmabuf *dmabuf = &state->dmabuf;
+	struct cs_card *card = state->card;
+	unsigned int phiIncr, coeffIncr, tmp1, tmp2;
+	unsigned int correctionPerGOF, correctionPerSec, initialDelay;
+	unsigned int frameGroupLength, cnt;
+	unsigned long flags;
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_set_adc_rate()+ %d\n",rate) );
+
+	/*
+	 *  We can only decimate by up to a factor of 1/9th the hardware rate.
+	 *  Correct the value if an attempt is made to stray outside that limit.
+	 */
+	if ((rate * 9) < 48000)
+		rate = 48000 / 9;
+
+	/*
+	 *  We can not capture at at rate greater than the Input Rate (48000).
+	 *  Return an error if an attempt is made to stray outside that limit.
+	 */
+	if (rate > 48000)
+		rate = 48000;
+
+	/*
+	 *  Compute the values used to drive the actual sample rate conversion.
+	 *  The following formulas are being computed, using inline assembly
+	 *  since we need to use 64 bit arithmetic to compute the values:
+	 *
+	 *     coeffIncr = -floor((Fs,out * 2^23) / Fs,in)
+	 *     phiIncr = floor((Fs,in * 2^26) / Fs,out)
+	 *     correctionPerGOF = floor((Fs,in * 2^26 - Fs,out * phiIncr) /
+	 *                                GOF_PER_SEC)
+	 *     correctionPerSec = Fs,in * 2^26 - Fs,out * phiIncr -
+	 *                          GOF_PER_SEC * correctionPerGOF
+	 *     initialDelay = ceil((24 * Fs,in) / Fs,out)
+	 *
+	 * i.e.
+	 *
+	 *     coeffIncr = neg(dividend((Fs,out * 2^23) / Fs,in))
+	 *     phiIncr:ulOther = dividend:remainder((Fs,in * 2^26) / Fs,out)
+	 *     correctionPerGOF:correctionPerSec =
+	 * 	    dividend:remainder(ulOther / GOF_PER_SEC)
+	 *     initialDelay = dividend(((24 * Fs,in) + Fs,out - 1) / Fs,out)
+	 */
+
+	tmp1 = rate << 16;
+	coeffIncr = tmp1 / 48000;
+	tmp1 -= coeffIncr * 48000;
+	tmp1 <<= 7;
+	coeffIncr <<= 7;
+	coeffIncr += tmp1 / 48000;
+	coeffIncr ^= 0xFFFFFFFF;
+	coeffIncr++;
+	tmp1 = 48000 << 16;
+	phiIncr = tmp1 / rate;
+	tmp1 -= phiIncr * rate;
+	tmp1 <<= 10;
+	phiIncr <<= 10;
+	tmp2 = tmp1 / rate;
+	phiIncr += tmp2;
+	tmp1 -= tmp2 * rate;
+	correctionPerGOF = tmp1 / GOF_PER_SEC;
+	tmp1 -= correctionPerGOF * GOF_PER_SEC;
+	correctionPerSec = tmp1;
+	initialDelay = ((48000 * 24) + rate - 1) / rate;
+
+	/*
+	 *  Fill in the VariDecimate control block.
+	 */
+	spin_lock_irqsave(&card->lock, flags);
+	cs461x_poke(card, BA1_CSRC,
+		((correctionPerSec << 16) & 0xFFFF0000) | (correctionPerGOF & 0xFFFF));
+	cs461x_poke(card, BA1_CCI, coeffIncr);
+	cs461x_poke(card, BA1_CD,
+		(((BA1_VARIDEC_BUF_1 + (initialDelay << 2)) << 16) & 0xFFFF0000) | 0x80);
+	cs461x_poke(card, BA1_CPI, phiIncr);
+	spin_unlock_irqrestore(&card->lock, flags);
+
+	/*
+	 *  Figure out the frame group length for the write back task.  Basically,
+	 *  this is just the factors of 24000 (2^6*3*5^3) that are not present in
+	 *  the output sample rate.
+	 */
+	frameGroupLength = 1;
+	for (cnt = 2; cnt <= 64; cnt *= 2) {
+		if (((rate / cnt) * cnt) != rate)
+			frameGroupLength *= 2;
+	}
+	if (((rate / 3) * 3) != rate) {
+		frameGroupLength *= 3;
+	}
+	for (cnt = 5; cnt <= 125; cnt *= 5) {
+		if (((rate / cnt) * cnt) != rate) 
+			frameGroupLength *= 5;
+        }
+
+	/*
+	 * Fill in the WriteBack control block.
+	 */
+	spin_lock_irqsave(&card->lock, flags);
+	cs461x_poke(card, BA1_CFG1, frameGroupLength);
+	cs461x_poke(card, BA1_CFG2, (0x00800000 | frameGroupLength));
+	cs461x_poke(card, BA1_CCST, 0x0000FFFF);
+	cs461x_poke(card, BA1_CSPB, ((65536 * rate) / 24000));
+	cs461x_poke(card, (BA1_CSPB + 4), 0x0000FFFF);
+	spin_unlock_irqrestore(&card->lock, flags);
+	dmabuf->rate = rate;
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_set_adc_rate()- %d\n",rate) );
+	return rate;
+}
+
+/* prepare channel attributes for playback */ 
+static void cs_play_setup(struct cs_state *state)
+{
+	struct dmabuf *dmabuf = &state->dmabuf;
+	struct cs_card *card = state->card;
+        unsigned int tmp, Count, playFormat;
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_play_setup()+\n") );
+        cs461x_poke(card, BA1_PVOL, 0x80008000);
+        if(!dmabuf->SGok)
+               cs461x_poke(card, BA1_PBA, virt_to_bus(dmabuf->pbuf));
+    
+        Count = 4;                                                          
+        playFormat=cs461x_peek(card, BA1_PFIE);                             
+        if ((dmabuf->fmt & CS_FMT_STEREO)) {                                
+                playFormat &= ~DMA_RQ_C2_AC_MONO_TO_STEREO;                 
+                Count *= 2;                                                 
+        }                                                                   
+        else                                                                
+                playFormat |= DMA_RQ_C2_AC_MONO_TO_STEREO;                  
+                                                                            
+        if ((dmabuf->fmt & CS_FMT_16BIT)) {                                 
+                playFormat &= ~(DMA_RQ_C2_AC_8_TO_16_BIT                    
+                           | DMA_RQ_C2_AC_SIGNED_CONVERT);                  
+                Count *= 2;                                                 
+        }                                                                   
+        else                                                                
+                playFormat |= (DMA_RQ_C2_AC_8_TO_16_BIT                     
+                           | DMA_RQ_C2_AC_SIGNED_CONVERT);                  
+                                                                            
+        cs461x_poke(card, BA1_PFIE, playFormat);                            
+                                                                            
+        tmp = cs461x_peek(card, BA1_PDTC);                                  
+        tmp &= 0xfffffe00;                                                  
+        cs461x_poke(card, BA1_PDTC, tmp | --Count);                         
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_play_setup()-\n") );
+
+}
+
+static struct InitStruct
+{
+    u32 off;
+    u32 val;
+} InitArray[] = { {0x00000040, 0x3fc0000f},
+                  {0x0000004c, 0x04800000},
+
+                  {0x000000b3, 0x00000780},
+                  {0x000000b7, 0x00000000},
+                  {0x000000bc, 0x07800000},
+
+                  {0x000000cd, 0x00800000},
+                };
+
+/*
+ * "SetCaptureSPValues()" -- Initialize record task values before each
+ * 	capture startup.  
+ */
+static void SetCaptureSPValues(struct cs_card *card)
+{
+	unsigned i, offset;
+	CS_DBGOUT(CS_FUNCTION, 8, printk("cs46xx: SetCaptureSPValues()+\n") );
+	for(i=0; i<sizeof(InitArray)/sizeof(struct InitStruct); i++)
+	{
+		offset = InitArray[i].off*4; /* 8bit to 32bit offset value */
+		cs461x_poke(card, offset, InitArray[i].val );
+	}
+	CS_DBGOUT(CS_FUNCTION, 8, printk("cs46xx: SetCaptureSPValues()-\n") );
+}
+
+/* prepare channel attributes for recording */
+static void cs_rec_setup(struct cs_state *state)
+{
+	struct cs_card *card = state->card;
+	struct dmabuf *dmabuf = &state->dmabuf;
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_rec_setup()+\n") );
+
+	SetCaptureSPValues(card);
+
+	/*
+	 * set the attenuation to 0dB 
+	 */
+	cs461x_poke(card, BA1_CVOL, 0x80008000);
+
+	/*
+	 * set the physical address of the capture buffer into the SP
+	 */
+	cs461x_poke(card, BA1_CBA, virt_to_bus(dmabuf->rawbuf));
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_rec_setup()-\n") );
+}
+
+
+/* get current playback/recording dma buffer pointer (byte offset from LBA),
+   called with spinlock held! */
+   
+static inline unsigned cs_get_dma_addr(struct cs_state *state)
+{
+	struct dmabuf *dmabuf = &state->dmabuf;
+	u32 offset;
+	
+	if ( (!(dmabuf->enable & DAC_RUNNING)) &&
+	     (!(dmabuf->enable & ADC_RUNNING) ) )
+	{
+		CS_DBGOUT(CS_ERROR, 2, printk(
+			"cs46xx: ERROR cs_get_dma_addr(): not enabled \n") );
+		return 0;
+	}
+		
+	/*
+	 * granularity is byte boundary, good part.
+	 */
+	if(dmabuf->enable & DAC_RUNNING)
+	{
+		offset = cs461x_peek(state->card, BA1_PBA);                                  
+	}
+	else /* ADC_RUNNING must be set */
+	{
+		offset = cs461x_peek(state->card, BA1_CBA);                                  
+	}
+	CS_DBGOUT(CS_PARMS | CS_FUNCTION, 9, 
+		printk("cs46xx: cs_get_dma_addr() %d\n",offset) );
+	offset = (u32)bus_to_virt((unsigned long)offset) - (u32)dmabuf->rawbuf;
+	CS_DBGOUT(CS_PARMS | CS_FUNCTION, 8, 
+		printk("cs46xx: cs_get_dma_addr()- %d\n",offset) );
+	return offset;
+}
+
+static void resync_dma_ptrs(struct cs_state *state)
+{
+	struct dmabuf *dmabuf;
+	
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: resync_dma_ptrs()+ \n") );
+	if(state)
+	{
+		dmabuf = &state->dmabuf;
+		dmabuf->hwptr=dmabuf->swptr = 0;
+		dmabuf->pringbuf = 0;
+	}
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: resync_dma_ptrs()- \n") );
+}
+	
+/* Stop recording (lock held) */
+static inline void __stop_adc(struct cs_state *state)
+{
+	struct dmabuf *dmabuf = &state->dmabuf;
+	struct cs_card *card = state->card;
+	unsigned int tmp;
+	
+	dmabuf->enable &= ~ADC_RUNNING;
+	
+	tmp = cs461x_peek(card, BA1_CCTL);
+	tmp &= 0xFFFF0000;
+	cs461x_poke(card, BA1_CCTL, tmp );
+}
+
+static void stop_adc(struct cs_state *state)
+{
+	unsigned long flags;
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: stop_adc()+ \n") );
+	spin_lock_irqsave(&state->card->lock, flags);
+	__stop_adc(state);
+	spin_unlock_irqrestore(&state->card->lock, flags);
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: stop_adc()- \n") );
+}
+
+static void start_adc(struct cs_state *state)
+{
+	struct dmabuf *dmabuf = &state->dmabuf;
+	struct cs_card *card = state->card;
+	unsigned long flags;
+	unsigned int tmp;
+
+	spin_lock_irqsave(&card->lock, flags);
+	if (!(dmabuf->enable & ADC_RUNNING) && 
+	     ((dmabuf->mapped || dmabuf->count < (signed)dmabuf->dmasize) 
+	       && dmabuf->ready) && 
+	       ((card->pm.flags & CS46XX_PM_IDLE) || 
+	        (card->pm.flags & CS46XX_PM_RESUMED)) )
+	{
+		dmabuf->enable |= ADC_RUNNING;
+		cs_set_divisor(dmabuf);
+		tmp = cs461x_peek(card, BA1_CCTL);
+		tmp &= 0xFFFF0000;
+		tmp |= card->cctl;
+		CS_DBGOUT(CS_FUNCTION, 2, printk(
+			"cs46xx: start_adc() poke 0x%x \n",tmp) );
+		cs461x_poke(card, BA1_CCTL, tmp);
+	}
+	spin_unlock_irqrestore(&card->lock, flags);
+}
+
+/* stop playback (lock held) */
+static inline void __stop_dac(struct cs_state *state)
+{
+	struct dmabuf *dmabuf = &state->dmabuf;
+	struct cs_card *card = state->card;
+	unsigned int tmp;
+
+	dmabuf->enable &= ~DAC_RUNNING;
+	
+	tmp=cs461x_peek(card, BA1_PCTL);
+	tmp&=0xFFFF;
+	cs461x_poke(card, BA1_PCTL, tmp);
+}
+
+static void stop_dac(struct cs_state *state)
+{
+	unsigned long flags;
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: stop_dac()+ \n") );
+	spin_lock_irqsave(&state->card->lock, flags);
+	__stop_dac(state);
+	spin_unlock_irqrestore(&state->card->lock, flags);
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: stop_dac()- \n") );
+}	
+
+static void start_dac(struct cs_state *state)
+{
+	struct dmabuf *dmabuf = &state->dmabuf;
+	struct cs_card *card = state->card;
+	unsigned long flags;
+	int tmp;
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: start_dac()+ \n") );
+	spin_lock_irqsave(&card->lock, flags);
+	if (!(dmabuf->enable & DAC_RUNNING) && 
+	    ((dmabuf->mapped || dmabuf->count > 0) && dmabuf->ready) &&
+	       ((card->pm.flags & CS46XX_PM_IDLE) || 
+	        (card->pm.flags & CS46XX_PM_RESUMED)) )
+	{
+		dmabuf->enable |= DAC_RUNNING;
+		tmp = cs461x_peek(card, BA1_PCTL);
+		tmp &= 0xFFFF;
+		tmp |= card->pctl;
+		CS_DBGOUT(CS_PARMS, 6, printk(
+		    "cs46xx: start_dac() poke card=%p tmp=0x%.08x addr=%p \n",
+		    card, (unsigned)tmp, 
+		    card->ba1.idx[(BA1_PCTL >> 16) & 3]+(BA1_PCTL&0xffff) ) );
+		cs461x_poke(card, BA1_PCTL, tmp);
+	}
+	spin_unlock_irqrestore(&card->lock, flags);
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: start_dac()- \n") );
+}
+
+#define DMABUF_MINORDER 1
+
+/*
+ * allocate DMA buffer, playback and recording buffers are separate.
+ */
+static int alloc_dmabuf(struct cs_state *state)
+{
+
+	struct cs_card *card=state->card;
+	struct dmabuf *dmabuf = &state->dmabuf;
+	void *rawbuf = NULL;
+	void *tmpbuff = NULL;
+	int order;
+	struct page *map, *mapend;
+	unsigned long df;
+	
+	dmabuf->ready  = dmabuf->mapped = 0;
+	dmabuf->SGok = 0;
+/*
+* check for order within limits, but do not overwrite value.
+*/
+	if((defaultorder > 1) && (defaultorder < 12))
+		df = defaultorder;
+	else
+		df = 2;	
+
+	for (order = df; order >= DMABUF_MINORDER; order--)
+		if ( (rawbuf = (void *) pci_alloc_consistent(
+			card->pci_dev, PAGE_SIZE << order, &dmabuf->dmaaddr)))
+			    break;
+	if (!rawbuf) {
+		CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
+			"cs46xx: alloc_dmabuf(): unable to allocate rawbuf\n"));
+		return -ENOMEM;
+	}
+	dmabuf->buforder = order;
+	dmabuf->rawbuf = rawbuf;
+	// Now mark the pages as reserved; otherwise the 
+	// remap_pfn_range() in cs46xx_mmap doesn't work.
+	// 1. get index to last page in mem_map array for rawbuf.
+	mapend = virt_to_page(dmabuf->rawbuf + 
+		(PAGE_SIZE << dmabuf->buforder) - 1);
+
+	// 2. mark each physical page in range as 'reserved'.
+	for (map = virt_to_page(dmabuf->rawbuf); map <= mapend; map++)
+		cs4x_mem_map_reserve(map);
+
+	CS_DBGOUT(CS_PARMS, 9, printk("cs46xx: alloc_dmabuf(): allocated %ld (order = %d) bytes at %p\n",
+	       PAGE_SIZE << order, order, rawbuf) );
+
+/*
+*  only allocate the conversion buffer for the ADC
+*/
+	if(dmabuf->type == CS_TYPE_DAC)
+	{
+		dmabuf->tmpbuff = NULL;
+		dmabuf->buforder_tmpbuff = 0;
+		return 0;
+	}
+/*
+ * now the temp buffer for 16/8 conversions
+ */
+
+	tmpbuff = (void *) pci_alloc_consistent(
+		card->pci_dev, PAGE_SIZE << order, &dmabuf->dmaaddr_tmpbuff);
+
+	if (!tmpbuff)
+		return -ENOMEM;
+	CS_DBGOUT(CS_PARMS, 9, printk("cs46xx: allocated %ld (order = %d) bytes at %p\n",
+	       PAGE_SIZE << order, order, tmpbuff) );
+
+	dmabuf->tmpbuff = tmpbuff;
+	dmabuf->buforder_tmpbuff = order;
+	
+	// Now mark the pages as reserved; otherwise the 
+	// remap_pfn_range() in cs46xx_mmap doesn't work.
+	// 1. get index to last page in mem_map array for rawbuf.
+	mapend = virt_to_page(dmabuf->tmpbuff + 
+		(PAGE_SIZE << dmabuf->buforder_tmpbuff) - 1);
+
+	// 2. mark each physical page in range as 'reserved'.
+	for (map = virt_to_page(dmabuf->tmpbuff); map <= mapend; map++)
+		cs4x_mem_map_reserve(map);
+	return 0;
+}
+
+/* free DMA buffer */
+static void dealloc_dmabuf(struct cs_state *state)
+{
+	struct dmabuf *dmabuf = &state->dmabuf;
+	struct page *map, *mapend;
+
+	if (dmabuf->rawbuf) {
+		// Undo prog_dmabuf()'s marking the pages as reserved 
+		mapend = virt_to_page(dmabuf->rawbuf + 
+				(PAGE_SIZE << dmabuf->buforder) - 1);
+		for (map = virt_to_page(dmabuf->rawbuf); map <= mapend; map++)
+			cs4x_mem_map_unreserve(map);
+		free_dmabuf(state->card, dmabuf);
+	}
+
+	if (dmabuf->tmpbuff) {
+		// Undo prog_dmabuf()'s marking the pages as reserved 
+		mapend = virt_to_page(dmabuf->tmpbuff +
+				(PAGE_SIZE << dmabuf->buforder_tmpbuff) - 1);
+		for (map = virt_to_page(dmabuf->tmpbuff); map <= mapend; map++)
+			cs4x_mem_map_unreserve(map);
+		free_dmabuf2(state->card, dmabuf);
+	}
+
+	dmabuf->rawbuf = NULL;
+	dmabuf->tmpbuff = NULL;
+	dmabuf->mapped = dmabuf->ready = 0;
+	dmabuf->SGok = 0;
+}
+
+static int __prog_dmabuf(struct cs_state *state)
+{
+        struct dmabuf *dmabuf = &state->dmabuf;
+        unsigned long flags;
+        unsigned long allocated_pages, allocated_bytes;                     
+        unsigned long tmp1, tmp2, fmt=0;                                           
+        unsigned long *ptmp = (unsigned long *) dmabuf->pbuf;               
+        unsigned long SGarray[9], nSGpages=0;                               
+        int ret;
+
+	CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf()+ \n"));
+/*
+ * check for CAPTURE and use only non-sg for initial release
+ */
+	if(dmabuf->type == CS_TYPE_ADC)
+	{
+		CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf() ADC\n"));
+		/* 
+		 * add in non-sg support for capture.
+		 */
+		spin_lock_irqsave(&state->card->lock, flags);
+	/* add code to reset the rawbuf memory. TRW */
+		resync_dma_ptrs(state);
+		dmabuf->total_bytes = dmabuf->blocks = 0;
+		dmabuf->count = dmabuf->error = dmabuf->underrun = 0;
+
+		dmabuf->SGok = 0;                                                   
+
+		spin_unlock_irqrestore(&state->card->lock, flags);
+
+		/* allocate DMA buffer if not allocated yet */
+		if (!dmabuf->rawbuf || !dmabuf->tmpbuff)
+			if ((ret = alloc_dmabuf(state)))
+				return ret; 
+	/*
+	 * static image only supports 16Bit signed, stereo - hard code fmt
+	 */
+		fmt = CS_FMT_16BIT | CS_FMT_STEREO;
+
+		dmabuf->numfrag = 2;                                        
+		dmabuf->fragsize = 2048;                                    
+		dmabuf->fragsamples = 2048 >> sample_shift[fmt];    
+		dmabuf->dmasize = 4096;                                     
+		dmabuf->fragshift = 11;                                     
+
+		memset(dmabuf->rawbuf, (fmt & CS_FMT_16BIT) ? 0 : 0x80,
+		       dmabuf->dmasize);
+        	memset(dmabuf->tmpbuff, (fmt & CS_FMT_16BIT) ? 0 : 0x80, 
+			PAGE_SIZE<<dmabuf->buforder_tmpbuff);      
+
+		/*
+		 *      Now set up the ring
+		 */
+
+		spin_lock_irqsave(&state->card->lock, flags);
+		cs_rec_setup(state);
+		spin_unlock_irqrestore(&state->card->lock, flags);
+
+		/* set the ready flag for the dma buffer */
+		dmabuf->ready = 1;
+
+		CS_DBGOUT(CS_PARMS, 4, printk(
+			"cs46xx: prog_dmabuf(): CAPTURE rate=%d fmt=0x%x numfrag=%d "
+			"fragsize=%d dmasize=%d\n",
+			    dmabuf->rate, dmabuf->fmt, dmabuf->numfrag,
+			    dmabuf->fragsize, dmabuf->dmasize) );
+
+		CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf()- 0 \n"));
+		return 0;
+	}
+	else if (dmabuf->type == CS_TYPE_DAC)
+	{
+	/*
+	 * Must be DAC
+	 */
+		CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf() DAC\n"));
+		spin_lock_irqsave(&state->card->lock, flags);
+		resync_dma_ptrs(state);
+		dmabuf->total_bytes = dmabuf->blocks = 0;
+		dmabuf->count = dmabuf->error = dmabuf->underrun = 0;
+
+		dmabuf->SGok = 0;                                                   
+
+		spin_unlock_irqrestore(&state->card->lock, flags);
+
+		/* allocate DMA buffer if not allocated yet */
+		if (!dmabuf->rawbuf)
+			if ((ret = alloc_dmabuf(state)))
+				return ret;
+
+		allocated_pages = 1 << dmabuf->buforder;                            
+		allocated_bytes = allocated_pages*PAGE_SIZE;                        
+										    
+		if(allocated_pages < 2)                                             
+		{
+			CS_DBGOUT(CS_FUNCTION, 4, printk(
+			    "cs46xx: prog_dmabuf() Error: allocated_pages too small (%d)\n",
+				(unsigned)allocated_pages));
+			return -ENOMEM;
+		}
+										    
+		/* Use all the pages allocated, fragsize 4k. */
+		/* Use 'pbuf' for S/G page map table. */
+		dmabuf->SGok = 1;           /* Use S/G. */
+
+		nSGpages = allocated_bytes/4096;    /* S/G pages always 4k. */
+										    
+		     /* Set up S/G variables. */
+		*ptmp = virt_to_bus(dmabuf->rawbuf);                                
+		*(ptmp+1) = 0x00000008;                                             
+		for(tmp1= 1; tmp1 < nSGpages; tmp1++) {                             
+			*(ptmp+2*tmp1) = virt_to_bus( (dmabuf->rawbuf)+4096*tmp1);  
+			if( tmp1 == nSGpages-1)                                     
+				tmp2 = 0xbfff0000;
+			else                                                        
+				tmp2 = 0x80000000+8*(tmp1+1);                       
+			*(ptmp+2*tmp1+1) = tmp2;                                    
+		}                                                                   
+		SGarray[0] = 0x82c0200d;                                            
+		SGarray[1] = 0xffff0000;                                            
+		SGarray[2] = *ptmp;                                                 
+		SGarray[3] = 0x00010600;                                            
+		SGarray[4] = *(ptmp+2);                                             
+		SGarray[5] = 0x80000010;                                            
+		SGarray[6] = *ptmp;                                                 
+		SGarray[7] = *(ptmp+2);                                             
+		SGarray[8] = (virt_to_bus(dmabuf->pbuf) & 0xffff000) | 0x10;        
+
+		if (dmabuf->SGok) {                                                 
+			dmabuf->numfrag = nSGpages;                                 
+			dmabuf->fragsize = 4096;                                    
+			dmabuf->fragsamples = 4096 >> sample_shift[dmabuf->fmt];    
+			dmabuf->fragshift = 12;                                     
+			dmabuf->dmasize = dmabuf->numfrag*4096;                     
+		}                                                                   
+		else {                                                              
+			SGarray[0] = 0xf2c0000f;                                    
+			SGarray[1] = 0x00000200;                                    
+			SGarray[2] = 0;                                             
+			SGarray[3] = 0x00010600;                                    
+			SGarray[4]=SGarray[5]=SGarray[6]=SGarray[7]=SGarray[8] = 0; 
+			dmabuf->numfrag = 2;                                        
+			dmabuf->fragsize = 2048;                                    
+			dmabuf->fragsamples = 2048 >> sample_shift[dmabuf->fmt];    
+			dmabuf->dmasize = 4096;                                     
+			dmabuf->fragshift = 11;                                     
+		}
+		for(tmp1 = 0; tmp1 < sizeof(SGarray)/4; tmp1++)                     
+			cs461x_poke( state->card, BA1_PDTC+tmp1*4, SGarray[tmp1]);  
+
+		memset(dmabuf->rawbuf, (dmabuf->fmt & CS_FMT_16BIT) ? 0 : 0x80,
+		       dmabuf->dmasize);
+
+		/*
+		 *      Now set up the ring
+		 */
+
+		spin_lock_irqsave(&state->card->lock, flags);
+		cs_play_setup(state);
+		spin_unlock_irqrestore(&state->card->lock, flags);
+
+		/* set the ready flag for the dma buffer */
+		dmabuf->ready = 1;
+
+		CS_DBGOUT(CS_PARMS, 4, printk(
+			"cs46xx: prog_dmabuf(): PLAYBACK rate=%d fmt=0x%x numfrag=%d "
+			"fragsize=%d dmasize=%d\n",
+			    dmabuf->rate, dmabuf->fmt, dmabuf->numfrag,
+			    dmabuf->fragsize, dmabuf->dmasize) );
+
+		CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf()- \n"));
+		return 0;
+	}
+	else
+	{
+		CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: prog_dmabuf()- Invalid Type %d\n",
+			dmabuf->type));
+	}
+	return 1;
+}
+
+static int prog_dmabuf(struct cs_state *state)
+{
+	int ret;
+	
+	down(&state->sem);
+	ret = __prog_dmabuf(state);
+	up(&state->sem);
+	
+	return ret;
+}
+
+static void cs_clear_tail(struct cs_state *state)
+{
+}
+
+static int drain_dac(struct cs_state *state, int nonblock)
+{
+	DECLARE_WAITQUEUE(wait, current);
+	struct dmabuf *dmabuf = &state->dmabuf;
+	struct cs_card *card=state->card;
+	unsigned long flags;
+	unsigned long tmo;
+	int count;
+
+	CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: drain_dac()+ \n"));
+	if (dmabuf->mapped || !dmabuf->ready)
+	{
+		CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: drain_dac()- 0, not ready\n"));
+		return 0;
+	}
+
+	add_wait_queue(&dmabuf->wait, &wait);
+	for (;;) {
+		/* It seems that we have to set the current state to TASK_INTERRUPTIBLE
+		   every time to make the process really go to sleep */
+		current->state = TASK_INTERRUPTIBLE;
+
+		spin_lock_irqsave(&state->card->lock, flags);
+		count = dmabuf->count;
+		spin_unlock_irqrestore(&state->card->lock, flags);
+
+		if (count <= 0)
+			break;
+
+		if (signal_pending(current))
+			break;
+
+		if (nonblock) {
+			remove_wait_queue(&dmabuf->wait, &wait);
+			current->state = TASK_RUNNING;
+			return -EBUSY;
+		}
+
+		tmo = (dmabuf->dmasize * HZ) / dmabuf->rate;
+		tmo >>= sample_shift[dmabuf->fmt];
+		tmo += (2048*HZ)/dmabuf->rate;
+		
+		if (!schedule_timeout(tmo ? tmo : 1) && tmo){
+			printk(KERN_ERR "cs46xx: drain_dac, dma timeout? %d\n", count);
+			break;
+		}
+	}
+	remove_wait_queue(&dmabuf->wait, &wait);
+	current->state = TASK_RUNNING;
+	if (signal_pending(current))
+	{
+		CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: drain_dac()- -ERESTARTSYS\n"));
+		/*
+		* set to silence and let that clear the fifos.
+		*/
+		cs461x_clear_serial_FIFOs(card, CS_TYPE_DAC);
+		return -ERESTARTSYS;
+	}
+
+	CS_DBGOUT(CS_FUNCTION, 4, printk("cs46xx: drain_dac()- 0\n"));
+	return 0;
+}
+
+
+/* update buffer manangement pointers, especially, dmabuf->count and dmabuf->hwptr */
+static void cs_update_ptr(struct cs_card *card, int wake)
+{
+	struct cs_state *state;
+	struct dmabuf *dmabuf;
+	unsigned hwptr;
+	int diff;
+
+	/* error handling and process wake up for ADC */
+	state = card->states[0];
+	if(state)
+	{
+		dmabuf = &state->dmabuf;
+		if (dmabuf->enable & ADC_RUNNING) {
+			/* update hardware pointer */
+			hwptr = cs_get_dma_addr(state);
+
+			diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize;
+			CS_DBGOUT(CS_PARMS, 9, printk(
+				"cs46xx: cs_update_ptr()+ ADC hwptr=%d diff=%d\n", 
+				hwptr,diff) );
+			dmabuf->hwptr = hwptr;
+			dmabuf->total_bytes += diff;
+			dmabuf->count += diff;
+			if (dmabuf->count > dmabuf->dmasize)
+				dmabuf->count = dmabuf->dmasize;
+
+			if(dmabuf->mapped)
+			{
+				if (wake && dmabuf->count >= (signed)dmabuf->fragsize)
+					wake_up(&dmabuf->wait);
+			} else 
+			{
+				if (wake && dmabuf->count > 0)
+					wake_up(&dmabuf->wait);
+			}
+		}
+	}
+
+/*
+ * Now the DAC
+ */
+	state = card->states[1];
+	if(state)
+	{
+		dmabuf = &state->dmabuf;
+		/* error handling and process wake up for DAC */
+		if (dmabuf->enable & DAC_RUNNING) {
+			/* update hardware pointer */
+			hwptr = cs_get_dma_addr(state);
+
+			diff = (dmabuf->dmasize + hwptr - dmabuf->hwptr) % dmabuf->dmasize;
+			CS_DBGOUT(CS_PARMS, 9, printk(
+				"cs46xx: cs_update_ptr()+ DAC hwptr=%d diff=%d\n", 
+				hwptr,diff) );
+			dmabuf->hwptr = hwptr;
+			dmabuf->total_bytes += diff;
+			if (dmabuf->mapped) {
+				dmabuf->count += diff;
+				if (wake && dmabuf->count >= (signed)dmabuf->fragsize)
+					wake_up(&dmabuf->wait);
+				/*
+				 * other drivers use fragsize, but don't see any sense
+				 * in that, since dmasize is the buffer asked for
+				 * via mmap.
+				 */
+				if( dmabuf->count > dmabuf->dmasize)
+					dmabuf->count &= dmabuf->dmasize-1;
+			} else {
+				dmabuf->count -= diff;
+				/*
+				 * backfill with silence and clear out the last 
+				 * "diff" number of bytes.
+				 */
+				if(hwptr >= diff)
+				{
+					memset(dmabuf->rawbuf + hwptr - diff, 
+						(dmabuf->fmt & CS_FMT_16BIT) ? 0 : 0x80, diff);
+				}
+				else
+				{
+					memset(dmabuf->rawbuf, 
+						(dmabuf->fmt & CS_FMT_16BIT) ? 0 : 0x80,
+						(unsigned)hwptr);
+					memset((char *)dmabuf->rawbuf + 
+							dmabuf->dmasize + hwptr - diff,
+						(dmabuf->fmt & CS_FMT_16BIT) ? 0 : 0x80, 
+						diff - hwptr); 
+				}
+
+				if (dmabuf->count < 0 || dmabuf->count > dmabuf->dmasize) {
+					CS_DBGOUT(CS_ERROR, 2, printk(KERN_INFO
+					  "cs46xx: ERROR DAC count<0 or count > dmasize (%d)\n",
+					  	dmabuf->count));
+					/* 
+					* buffer underrun or buffer overrun, reset the
+					* count of bytes written back to 0.
+					*/
+					if(dmabuf->count < 0)
+						dmabuf->underrun=1;
+					dmabuf->count = 0;
+					dmabuf->error++;
+				}
+				if (wake && dmabuf->count < (signed)dmabuf->dmasize/2)
+					wake_up(&dmabuf->wait);
+			}
+		}
+	}
+}
+
+
+/* hold spinlock for the following! */
+static void cs_handle_midi(struct cs_card *card)
+{
+        unsigned char ch;
+        int wake;
+        unsigned temp1;
+
+        wake = 0;
+        while (!(cs461x_peekBA0(card,  BA0_MIDSR) & MIDSR_RBE)) {
+                ch = cs461x_peekBA0(card, BA0_MIDRP);
+                if (card->midi.icnt < CS_MIDIINBUF) {
+                        card->midi.ibuf[card->midi.iwr] = ch;
+                        card->midi.iwr = (card->midi.iwr + 1) % CS_MIDIINBUF;
+                        card->midi.icnt++;
+                }
+                wake = 1;
+        }
+        if (wake)
+                wake_up(&card->midi.iwait);
+        wake = 0;
+        while (!(cs461x_peekBA0(card,  BA0_MIDSR) & MIDSR_TBF) && card->midi.ocnt > 0) {
+                temp1 = ( card->midi.obuf[card->midi.ord] ) & 0x000000ff;
+                cs461x_pokeBA0(card, BA0_MIDWP,temp1);
+                card->midi.ord = (card->midi.ord + 1) % CS_MIDIOUTBUF;
+                card->midi.ocnt--;
+                if (card->midi.ocnt < CS_MIDIOUTBUF-16)
+                        wake = 1;
+        }
+        if (wake)
+                wake_up(&card->midi.owait);
+}
+
+static irqreturn_t cs_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct cs_card *card = (struct cs_card *)dev_id;
+	/* Single channel card */
+	struct cs_state *recstate = card->channel[0].state;
+	struct cs_state *playstate = card->channel[1].state;
+	u32 status;
+
+	CS_DBGOUT(CS_INTERRUPT, 9, printk("cs46xx: cs_interrupt()+ \n"));
+
+	spin_lock(&card->lock);
+
+	status = cs461x_peekBA0(card, BA0_HISR);
+	
+	if ((status & 0x7fffffff) == 0)
+	{
+		cs461x_pokeBA0(card, BA0_HICR, HICR_CHGM|HICR_IEV);
+		spin_unlock(&card->lock);
+		return IRQ_HANDLED;	/* Might be IRQ_NONE.. */
+	}
+	
+	/*
+	 * check for playback or capture interrupt only
+	 */
+	if( ((status & HISR_VC0) && playstate && playstate->dmabuf.ready) || 
+	    (((status & HISR_VC1) && recstate && recstate->dmabuf.ready)) )
+	{
+		CS_DBGOUT(CS_INTERRUPT, 8, printk(
+			"cs46xx: cs_interrupt() interrupt bit(s) set (0x%x)\n",status));
+		cs_update_ptr(card, CS_TRUE);
+	}
+
+        if( status & HISR_MIDI )
+                cs_handle_midi(card);
+	
+ 	/* clear 'em */
+	cs461x_pokeBA0(card, BA0_HICR, HICR_CHGM|HICR_IEV);
+	spin_unlock(&card->lock);
+	CS_DBGOUT(CS_INTERRUPT, 9, printk("cs46xx: cs_interrupt()- \n"));
+	return IRQ_HANDLED;
+}
+
+
+/**********************************************************************/
+
+static ssize_t cs_midi_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
+{
+        struct cs_card *card = (struct cs_card *)file->private_data;
+        ssize_t ret;
+        unsigned long flags;
+        unsigned ptr;
+        int cnt;
+
+        if (!access_ok(VERIFY_WRITE, buffer, count))
+                return -EFAULT;
+        ret = 0;
+        while (count > 0) {
+                spin_lock_irqsave(&card->lock, flags);
+                ptr = card->midi.ird;
+                cnt = CS_MIDIINBUF - ptr;
+                if (card->midi.icnt < cnt)
+                        cnt = card->midi.icnt;
+                spin_unlock_irqrestore(&card->lock, flags);
+                if (cnt > count)
+                        cnt = count;
+                if (cnt <= 0) {
+                        if (file->f_flags & O_NONBLOCK)
+                                return ret ? ret : -EAGAIN;
+                        interruptible_sleep_on(&card->midi.iwait);
+                        if (signal_pending(current))
+                                return ret ? ret : -ERESTARTSYS;
+                        continue;
+                }
+                if (copy_to_user(buffer, card->midi.ibuf + ptr, cnt))
+                        return ret ? ret : -EFAULT;
+                ptr = (ptr + cnt) % CS_MIDIINBUF;
+                spin_lock_irqsave(&card->lock, flags);
+                card->midi.ird = ptr;
+                card->midi.icnt -= cnt;
+                spin_unlock_irqrestore(&card->lock, flags);
+                count -= cnt;
+                buffer += cnt;
+                ret += cnt;
+        }
+        return ret;
+}
+
+
+static ssize_t cs_midi_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
+{
+        struct cs_card *card = (struct cs_card *)file->private_data;
+        ssize_t ret;
+        unsigned long flags;
+        unsigned ptr;
+        int cnt;
+
+        if (!access_ok(VERIFY_READ, buffer, count))
+                return -EFAULT;
+        ret = 0;
+        while (count > 0) {
+                spin_lock_irqsave(&card->lock, flags);
+                ptr = card->midi.owr;
+                cnt = CS_MIDIOUTBUF - ptr;
+                if (card->midi.ocnt + cnt > CS_MIDIOUTBUF)
+                        cnt = CS_MIDIOUTBUF - card->midi.ocnt;
+                if (cnt <= 0)
+                        cs_handle_midi(card);
+                spin_unlock_irqrestore(&card->lock, flags);
+                if (cnt > count)
+                        cnt = count;
+                if (cnt <= 0) {
+                        if (file->f_flags & O_NONBLOCK)
+                                return ret ? ret : -EAGAIN;
+                        interruptible_sleep_on(&card->midi.owait);
+                        if (signal_pending(current))
+                                return ret ? ret : -ERESTARTSYS;
+                        continue;
+                }
+                if (copy_from_user(card->midi.obuf + ptr, buffer, cnt))
+                        return ret ? ret : -EFAULT;
+                ptr = (ptr + cnt) % CS_MIDIOUTBUF;
+                spin_lock_irqsave(&card->lock, flags);
+                card->midi.owr = ptr;
+                card->midi.ocnt += cnt;
+                spin_unlock_irqrestore(&card->lock, flags);
+                count -= cnt;
+                buffer += cnt;
+                ret += cnt;
+                spin_lock_irqsave(&card->lock, flags);
+                cs_handle_midi(card);
+                spin_unlock_irqrestore(&card->lock, flags);
+        }
+        return ret;
+}
+
+
+static unsigned int cs_midi_poll(struct file *file, struct poll_table_struct *wait)
+{
+        struct cs_card *card = (struct cs_card *)file->private_data;
+        unsigned long flags;
+        unsigned int mask = 0;
+
+        if (file->f_flags & FMODE_WRITE)
+                poll_wait(file, &card->midi.owait, wait);
+        if (file->f_flags & FMODE_READ)
+                poll_wait(file, &card->midi.iwait, wait);
+        spin_lock_irqsave(&card->lock, flags);
+        if (file->f_flags & FMODE_READ) {
+                if (card->midi.icnt > 0)
+                        mask |= POLLIN | POLLRDNORM;
+        }
+        if (file->f_flags & FMODE_WRITE) {
+                if (card->midi.ocnt < CS_MIDIOUTBUF)
+                        mask |= POLLOUT | POLLWRNORM;
+        }
+        spin_unlock_irqrestore(&card->lock, flags);
+        return mask;
+}
+
+
+static int cs_midi_open(struct inode *inode, struct file *file)
+{
+        unsigned int minor = iminor(inode);
+        struct cs_card *card=NULL;
+        unsigned long flags;
+	struct list_head *entry;
+
+	list_for_each(entry, &cs46xx_devs)
+	{
+		card = list_entry(entry, struct cs_card, list);
+		if (card->dev_midi == minor)
+			break;
+	}
+
+	if (entry == &cs46xx_devs)
+		return -ENODEV;
+	if (!card)
+	{
+		CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
+			"cs46xx: cs46xx_midi_open(): Error - unable to find card struct\n"));
+		return -ENODEV;
+	}
+
+        file->private_data = card;
+        /* wait for device to become free */
+        down(&card->midi.open_sem);
+        while (card->midi.open_mode & file->f_mode) {
+                if (file->f_flags & O_NONBLOCK) {
+                        up(&card->midi.open_sem);
+                        return -EBUSY;
+                }
+                up(&card->midi.open_sem);
+                interruptible_sleep_on(&card->midi.open_wait);
+                if (signal_pending(current))
+                        return -ERESTARTSYS;
+                down(&card->midi.open_sem);
+        }
+        spin_lock_irqsave(&card->midi.lock, flags);
+        if (!(card->midi.open_mode & (FMODE_READ | FMODE_WRITE))) {
+                card->midi.ird = card->midi.iwr = card->midi.icnt = 0;
+                card->midi.ord = card->midi.owr = card->midi.ocnt = 0;
+                card->midi.ird = card->midi.iwr = card->midi.icnt = 0;
+                cs461x_pokeBA0(card, BA0_MIDCR, 0x0000000f);            /* Enable xmit, rcv. */
+                cs461x_pokeBA0(card, BA0_HICR, HICR_IEV | HICR_CHGM);   /* Enable interrupts */
+        }
+        if (file->f_mode & FMODE_READ) {
+                card->midi.ird = card->midi.iwr = card->midi.icnt = 0;
+        }
+        if (file->f_mode & FMODE_WRITE) {
+                card->midi.ord = card->midi.owr = card->midi.ocnt = 0;
+        }
+        spin_unlock_irqrestore(&card->midi.lock, flags);
+        card->midi.open_mode |= (file->f_mode & (FMODE_READ | FMODE_WRITE));
+        up(&card->midi.open_sem);
+        return 0;
+}
+
+
+static int cs_midi_release(struct inode *inode, struct file *file)
+{
+        struct cs_card *card = (struct cs_card *)file->private_data;
+        DECLARE_WAITQUEUE(wait, current);
+        unsigned long flags;
+        unsigned count, tmo;
+
+        if (file->f_mode & FMODE_WRITE) {
+                current->state = TASK_INTERRUPTIBLE;
+                add_wait_queue(&card->midi.owait, &wait);
+                for (;;) {
+                        spin_lock_irqsave(&card->midi.lock, flags);
+                        count = card->midi.ocnt;
+                        spin_unlock_irqrestore(&card->midi.lock, flags);
+                        if (count <= 0)
+                                break;
+                        if (signal_pending(current))
+                                break;
+                        if (file->f_flags & O_NONBLOCK)
+                        	break;
+                        tmo = (count * HZ) / 3100;
+                        if (!schedule_timeout(tmo ? : 1) && tmo)
+                                printk(KERN_DEBUG "cs46xx: midi timed out??\n");
+                }
+                remove_wait_queue(&card->midi.owait, &wait);
+                current->state = TASK_RUNNING;
+        }
+        down(&card->midi.open_sem);
+        card->midi.open_mode &= (~(file->f_mode & (FMODE_READ | FMODE_WRITE)));
+        up(&card->midi.open_sem);
+        wake_up(&card->midi.open_wait);
+        return 0;
+}
+
+/*
+ *   Midi file operations struct.
+ */
+static /*const*/ struct file_operations cs_midi_fops = {
+	CS_OWNER	CS_THIS_MODULE
+	.llseek		= no_llseek,
+	.read		= cs_midi_read,
+	.write		= cs_midi_write,
+	.poll		= cs_midi_poll,
+	.open		= cs_midi_open,
+	.release	= cs_midi_release,
+};
+
+/*
+ *
+ * CopySamples copies 16-bit stereo signed samples from the source to the
+ * destination, possibly converting down to unsigned 8-bit and/or mono.
+ * count specifies the number of output bytes to write.
+ *
+ *  Arguments:
+ *
+ *  dst             - Pointer to a destination buffer.
+ *  src             - Pointer to a source buffer
+ *  count           - The number of bytes to copy into the destination buffer.
+ *  fmt             - CS_FMT_16BIT and/or CS_FMT_STEREO bits
+ *  dmabuf          - pointer to the dma buffer structure
+ *
+ * NOTES: only call this routine if the output desired is not 16 Signed Stereo
+ * 	
+ *
+ */
+static void CopySamples(char *dst, char *src, int count, unsigned fmt, 
+		struct dmabuf *dmabuf)
+{
+
+    s32 s32AudioSample;
+    s16 *psSrc=(s16 *)src;
+    s16 *psDst=(s16 *)dst;
+    u8 *pucDst=(u8 *)dst;
+
+    CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_INFO "cs46xx: CopySamples()+ ") );
+    CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO
+	" dst=%p src=%p count=%d fmt=0x%x\n",
+	dst,src,count,fmt) );
+
+    /*
+     * See if the data should be output as 8-bit unsigned stereo.
+     */
+    if((fmt & CS_FMT_STEREO) && !(fmt & CS_FMT_16BIT))
+    {
+        /*
+         * Convert each 16-bit signed stereo sample to 8-bit unsigned 
+	 * stereo using rounding.
+         */
+        psSrc = (s16 *)src;
+	count = count/2;
+        while(count--)
+        {
+            *(pucDst++) = (u8)(((s16)(*psSrc++) + (s16)0x8000) >> 8);
+        }
+    }
+    /*
+     * See if the data should be output at 8-bit unsigned mono.
+     */
+    else if(!(fmt & CS_FMT_STEREO) && !(fmt & CS_FMT_16BIT))
+    {
+        /*
+         * Convert each 16-bit signed stereo sample to 8-bit unsigned 
+	 * mono using averaging and rounding.
+         */
+        psSrc = (s16 *)src;
+	count = count/2;
+        while(count--)
+        {
+	    s32AudioSample = ((*psSrc)+(*(psSrc + 1)))/2 + (s32)0x80;
+	    if(s32AudioSample > 0x7fff)
+	    	s32AudioSample = 0x7fff;
+            *(pucDst++) = (u8)(((s16)s32AudioSample + (s16)0x8000) >> 8);
+	    psSrc += 2;
+        }
+    }
+    /*
+     * See if the data should be output at 16-bit signed mono.
+     */
+    else if(!(fmt & CS_FMT_STEREO) && (fmt & CS_FMT_16BIT))
+    {
+        /*
+         * Convert each 16-bit signed stereo sample to 16-bit signed 
+	 * mono using averaging.
+         */
+        psSrc = (s16 *)src;
+	count = count/2;
+        while(count--)
+        {
+            *(psDst++) = (s16)((*psSrc)+(*(psSrc + 1)))/2;
+	    psSrc += 2;
+        }
+    }
+}
+
+/*
+ * cs_copy_to_user()
+ * replacement for the standard copy_to_user, to allow for a conversion from
+ * 16 bit to 8 bit and from stereo to mono, if the record conversion is active.  
+ * The current CS46xx/CS4280 static image only records in 16bit unsigned Stereo, 
+ * so we convert from any of the other format combinations.
+ */
+static unsigned cs_copy_to_user(
+	struct cs_state *s, 
+	void __user *dest, 
+	void *hwsrc, 
+	unsigned cnt, 
+	unsigned *copied)
+{
+	struct dmabuf *dmabuf = &s->dmabuf;
+	void *src = hwsrc;  /* default to the standard destination buffer addr */
+
+	CS_DBGOUT(CS_FUNCTION, 6, printk(KERN_INFO 
+		"cs_copy_to_user()+ fmt=0x%x cnt=%d dest=%p\n",
+		dmabuf->fmt,(unsigned)cnt,dest) );
+
+	if(cnt > dmabuf->dmasize)
+	{
+		cnt = dmabuf->dmasize;
+	}
+	if(!cnt)
+	{
+		*copied = 0;
+		return 0;
+	}
+	if(dmabuf->divisor != 1)
+	{
+		if(!dmabuf->tmpbuff)
+		{
+			*copied = cnt/dmabuf->divisor;
+			return 0;
+		}
+
+		CopySamples((char *)dmabuf->tmpbuff, (char *)hwsrc, cnt, 
+			dmabuf->fmt, dmabuf);
+		src = dmabuf->tmpbuff;
+		cnt = cnt/dmabuf->divisor;
+	}
+        if (copy_to_user(dest, src, cnt))
+	{
+		CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_ERR 
+			"cs46xx: cs_copy_to_user()- fault dest=%p src=%p cnt=%d\n",
+				dest,src,cnt) );
+		*copied = 0;
+		return -EFAULT;
+	}
+	*copied = cnt;
+	CS_DBGOUT(CS_FUNCTION, 2, printk(KERN_INFO 
+		"cs46xx: cs_copy_to_user()- copied bytes is %d \n",cnt) );
+	return 0;
+}
+
+/* in this loop, dmabuf.count signifies the amount of data that is waiting to be copied to
+   the user's buffer.  it is filled by the dma machine and drained by this loop. */
+static ssize_t cs_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
+{
+	struct cs_card *card = (struct cs_card *) file->private_data;
+	struct cs_state *state;
+	DECLARE_WAITQUEUE(wait, current);
+	struct dmabuf *dmabuf;
+	ssize_t ret = 0;
+	unsigned long flags;
+	unsigned swptr;
+	int cnt;
+	unsigned copied=0;
+
+	CS_DBGOUT(CS_WAVE_READ | CS_FUNCTION, 4, 
+		printk("cs46xx: cs_read()+ %zd\n",count) );
+	state = (struct cs_state *)card->states[0];
+	if(!state)
+		return -ENODEV;
+	dmabuf = &state->dmabuf;
+
+	if (dmabuf->mapped)
+		return -ENXIO;
+	if (!access_ok(VERIFY_WRITE, buffer, count))
+		return -EFAULT;
+	
+	down(&state->sem);
+	if (!dmabuf->ready && (ret = __prog_dmabuf(state)))
+		goto out2;
+
+	add_wait_queue(&state->dmabuf.wait, &wait);
+	while (count > 0) {
+		while(!(card->pm.flags & CS46XX_PM_IDLE))
+		{
+			schedule();
+			if (signal_pending(current)) {
+				if(!ret) ret = -ERESTARTSYS;
+				goto out;
+			}
+		}
+		spin_lock_irqsave(&state->card->lock, flags);
+		swptr = dmabuf->swptr;
+		cnt = dmabuf->dmasize - swptr;
+		if (dmabuf->count < cnt)
+			cnt = dmabuf->count;
+		if (cnt <= 0)
+			__set_current_state(TASK_INTERRUPTIBLE);
+		spin_unlock_irqrestore(&state->card->lock, flags);
+
+		if (cnt > (count * dmabuf->divisor))
+			cnt = count * dmabuf->divisor;
+		if (cnt <= 0) {
+			/* buffer is empty, start the dma machine and wait for data to be
+			   recorded */
+			start_adc(state);
+			if (file->f_flags & O_NONBLOCK) {
+				if (!ret) ret = -EAGAIN;
+				goto out;
+ 			}
+			up(&state->sem);
+			schedule();
+			if (signal_pending(current)) {
+				if(!ret) ret = -ERESTARTSYS;
+				goto out;
+			}
+			down(&state->sem);
+			if (dmabuf->mapped) 
+			{
+				if(!ret)
+					ret = -ENXIO;
+				goto out;
+			}
+ 			continue;
+		}
+
+		CS_DBGOUT(CS_WAVE_READ, 2, printk(KERN_INFO 
+			"_read() copy_to cnt=%d count=%zd ", cnt,count) );
+		CS_DBGOUT(CS_WAVE_READ, 8, printk(KERN_INFO 
+			" .dmasize=%d .count=%d buffer=%p ret=%zd\n",
+			dmabuf->dmasize,dmabuf->count,buffer,ret) );
+
+                if (cs_copy_to_user(state, buffer, 
+			(char *)dmabuf->rawbuf + swptr, cnt, &copied))
+		{
+			if (!ret) ret = -EFAULT;
+			goto out;
+		}
+                swptr = (swptr + cnt) % dmabuf->dmasize;
+                spin_lock_irqsave(&card->lock, flags);
+                dmabuf->swptr = swptr;
+                dmabuf->count -= cnt;
+                spin_unlock_irqrestore(&card->lock, flags);
+                count -= copied;
+                buffer += copied;
+                ret += copied;
+                start_adc(state);
+	}
+out:
+	remove_wait_queue(&state->dmabuf.wait, &wait);
+out2:
+	up(&state->sem);
+	set_current_state(TASK_RUNNING);
+	CS_DBGOUT(CS_WAVE_READ | CS_FUNCTION, 4, 
+		printk("cs46xx: cs_read()- %zd\n",ret) );
+	return ret;
+}
+
+/* in this loop, dmabuf.count signifies the amount of data that is waiting to be dma to
+   the soundcard.  it is drained by the dma machine and filled by this loop. */
+static ssize_t cs_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
+{
+	struct cs_card *card = (struct cs_card *) file->private_data;
+	struct cs_state *state;
+	DECLARE_WAITQUEUE(wait, current);
+	struct dmabuf *dmabuf;
+	ssize_t ret;
+	unsigned long flags;
+	unsigned swptr;
+	int cnt;
+
+	CS_DBGOUT(CS_WAVE_WRITE | CS_FUNCTION, 4,
+		printk("cs46xx: cs_write called, count = %zd\n", count) );
+	state = (struct cs_state *)card->states[1];
+	if(!state)
+		return -ENODEV;
+	if (!access_ok(VERIFY_READ, buffer, count))
+		return -EFAULT;
+	dmabuf = &state->dmabuf;
+
+	down(&state->sem);
+	if (dmabuf->mapped)
+	{
+		ret = -ENXIO;
+		goto out;
+	}
+
+	if (!dmabuf->ready && (ret = __prog_dmabuf(state)))
+		goto out;
+	add_wait_queue(&state->dmabuf.wait, &wait);
+	ret = 0;
+/*
+* Start the loop to read from the user's buffer and write to the dma buffer.
+* check for PM events and underrun/overrun in the loop.
+*/
+	while (count > 0) {
+		while(!(card->pm.flags & CS46XX_PM_IDLE))
+		{
+			schedule();
+			if (signal_pending(current)) {
+				if(!ret) ret = -ERESTARTSYS;
+				goto out;
+			}
+		}
+		spin_lock_irqsave(&state->card->lock, flags);
+		if (dmabuf->count < 0) {
+			/* buffer underrun, we are recovering from sleep_on_timeout,
+			   resync hwptr and swptr */
+			dmabuf->count = 0;
+			dmabuf->swptr = dmabuf->hwptr;
+		}
+		if (dmabuf->underrun)
+		{
+			dmabuf->underrun = 0;
+			dmabuf->hwptr = cs_get_dma_addr(state);
+			dmabuf->swptr = dmabuf->hwptr;
+		}
+
+		swptr = dmabuf->swptr;
+		cnt = dmabuf->dmasize - swptr;
+		if (dmabuf->count + cnt > dmabuf->dmasize)
+			cnt = dmabuf->dmasize - dmabuf->count;
+		if (cnt <= 0)
+			__set_current_state(TASK_INTERRUPTIBLE);
+		spin_unlock_irqrestore(&state->card->lock, flags);
+
+		if (cnt > count)
+			cnt = count;
+		if (cnt <= 0) {
+			/* buffer is full, start the dma machine and wait for data to be
+			   played */
+			start_dac(state);
+			if (file->f_flags & O_NONBLOCK) {
+				if (!ret) ret = -EAGAIN;
+				goto out;
+ 			}
+			up(&state->sem);
+			schedule();
+ 			if (signal_pending(current)) {
+				if(!ret) ret = -ERESTARTSYS;
+				goto out;
+ 			}
+			down(&state->sem);
+			if (dmabuf->mapped)
+			{
+				if(!ret)
+					ret = -ENXIO;
+				goto out;
+			}
+ 			continue;
+ 		}
+		if (copy_from_user(dmabuf->rawbuf + swptr, buffer, cnt)) {
+			if (!ret) ret = -EFAULT;
+			goto out;
+		}
+		spin_lock_irqsave(&state->card->lock, flags);
+		swptr = (swptr + cnt) % dmabuf->dmasize;
+		dmabuf->swptr = swptr;
+		dmabuf->count += cnt;
+		if(dmabuf->count > dmabuf->dmasize)
+		{
+			CS_DBGOUT(CS_WAVE_WRITE | CS_ERROR, 2, printk(
+			    "cs46xx: cs_write() d->count > dmasize - resetting\n"));
+			dmabuf->count = dmabuf->dmasize;
+		}
+		dmabuf->endcleared = 0;
+		spin_unlock_irqrestore(&state->card->lock, flags);
+
+		count -= cnt;
+		buffer += cnt;
+		ret += cnt;
+		start_dac(state);
+	}
+out:
+	up(&state->sem);
+	remove_wait_queue(&state->dmabuf.wait, &wait);
+	set_current_state(TASK_RUNNING);
+
+	CS_DBGOUT(CS_WAVE_WRITE | CS_FUNCTION, 2, 
+		printk("cs46xx: cs_write()- ret=%zd\n", ret) );
+	return ret;
+}
+
+static unsigned int cs_poll(struct file *file, struct poll_table_struct *wait)
+{
+	struct cs_card *card = (struct cs_card *)file->private_data;
+	struct dmabuf *dmabuf;
+	struct cs_state *state;
+
+	unsigned long flags;
+	unsigned int mask = 0;
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_poll()+ \n"));
+	if (!(file->f_mode & (FMODE_WRITE | FMODE_READ)))
+	{
+		return -EINVAL;
+	}
+	if (file->f_mode & FMODE_WRITE)
+	{
+		state = card->states[1];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			poll_wait(file, &dmabuf->wait, wait);
+		}
+	}
+	if (file->f_mode & FMODE_READ)
+	{
+		state = card->states[0];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			poll_wait(file, &dmabuf->wait, wait);
+		}
+	}
+
+	spin_lock_irqsave(&card->lock, flags);
+	cs_update_ptr(card, CS_FALSE);
+	if (file->f_mode & FMODE_READ) {
+		state = card->states[0];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			if (dmabuf->count >= (signed)dmabuf->fragsize)
+				mask |= POLLIN | POLLRDNORM;
+		}
+	}
+	if (file->f_mode & FMODE_WRITE) {
+		state = card->states[1];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			if (dmabuf->mapped) {
+				if (dmabuf->count >= (signed)dmabuf->fragsize)
+				    mask |= POLLOUT | POLLWRNORM;
+			} else {
+				if ((signed)dmabuf->dmasize >= dmabuf->count 
+					+ (signed)dmabuf->fragsize)
+				    mask |= POLLOUT | POLLWRNORM;
+			}
+		}
+	}
+	spin_unlock_irqrestore(&card->lock, flags);
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_poll()- (0x%x) \n",
+		mask));
+	return mask;
+}
+
+/*
+ *	We let users mmap the ring buffer. Its not the real DMA buffer but
+ *	that side of the code is hidden in the IRQ handling. We do a software
+ *	emulation of DMA from a 64K or so buffer into a 2K FIFO. 
+ *	(the hardware probably deserves a moan here but Crystal send me nice
+ *	toys ;)).
+ */
+ 
+static int cs_mmap(struct file *file, struct vm_area_struct *vma)
+{
+	struct cs_card *card = (struct cs_card *)file->private_data;
+	struct cs_state *state;
+	struct dmabuf *dmabuf;
+	int ret = 0;
+	unsigned long size;
+
+	CS_DBGOUT(CS_FUNCTION | CS_PARMS, 2, printk("cs46xx: cs_mmap()+ file=%p %s %s\n", 
+		file, vma->vm_flags & VM_WRITE ? "VM_WRITE" : "",
+		vma->vm_flags & VM_READ ? "VM_READ" : "") );
+
+	if (vma->vm_flags & VM_WRITE) {
+		state = card->states[1];
+		if(state)
+		{
+			CS_DBGOUT(CS_OPEN, 2, printk(
+			  "cs46xx: cs_mmap() VM_WRITE - state TRUE prog_dmabuf DAC\n") );
+			if ((ret = prog_dmabuf(state)) != 0)
+				return ret;
+		}
+	} else if (vma->vm_flags & VM_READ) {
+		state = card->states[0];
+		if(state)
+		{
+			CS_DBGOUT(CS_OPEN, 2, printk(
+			  "cs46xx: cs_mmap() VM_READ - state TRUE prog_dmabuf ADC\n") );
+			if ((ret = prog_dmabuf(state)) != 0)
+				return ret;
+		}
+	} else {
+		CS_DBGOUT(CS_ERROR, 2, printk(
+		  "cs46xx: cs_mmap() return -EINVAL\n") );
+		return -EINVAL;
+	}
+
+/*
+ * For now ONLY support playback, but seems like the only way to use
+ * mmap() is to open an FD with RDWR, just read or just write access
+ * does not function, get an error back from the kernel.
+ * Also, QuakeIII opens with RDWR!  So, there must be something
+ * to needing read/write access mapping.  So, allow read/write but 
+ * use the DAC only.
+ */
+	state = card->states[1];  
+	if (!state) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	down(&state->sem);	
+	dmabuf = &state->dmabuf;
+	if (cs4x_pgoff(vma) != 0)
+	{
+		ret = -EINVAL;
+		goto out;
+	}
+	size = vma->vm_end - vma->vm_start;
+
+	CS_DBGOUT(CS_PARMS, 2, printk("cs46xx: cs_mmap(): size=%d\n",(unsigned)size) );
+
+	if (size > (PAGE_SIZE << dmabuf->buforder))
+	{
+		ret = -EINVAL;
+		goto out;
+	}
+	if (remap_pfn_range(vma, vma->vm_start,
+			     virt_to_phys(dmabuf->rawbuf) >> PAGE_SHIFT,
+			     size, vma->vm_page_prot))
+	{
+		ret = -EAGAIN;
+		goto out;
+	}
+	dmabuf->mapped = 1;
+
+	CS_DBGOUT(CS_FUNCTION, 2, printk("cs46xx: cs_mmap()-\n") );
+out:
+	up(&state->sem);
+	return ret;	
+}
+
+static int cs_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+{
+	struct cs_card *card = (struct cs_card *)file->private_data;
+	struct cs_state *state;
+	struct dmabuf *dmabuf=NULL;
+	unsigned long flags;
+	audio_buf_info abinfo;
+	count_info cinfo;
+	int val, valsave, mapped, ret;
+	void __user *argp = (void __user *)arg;
+	int __user *p = argp;
+
+	state = (struct cs_state *)card->states[0];
+	if(state)
+	{
+		dmabuf = &state->dmabuf;
+		mapped = (file->f_mode & FMODE_READ) && dmabuf->mapped;
+	}
+	state = (struct cs_state *)card->states[1];
+	if(state)
+	{
+		dmabuf = &state->dmabuf;
+		mapped |= (file->f_mode & FMODE_WRITE) && dmabuf->mapped;
+	}
+		
+#if CSDEBUG
+	printioctl(cmd);
+#endif
+
+	switch (cmd) 
+	{
+	case OSS_GETVERSION:
+		return put_user(SOUND_VERSION, p);
+
+	case SNDCTL_DSP_RESET:
+		/* FIXME: spin_lock ? */
+		if (file->f_mode & FMODE_WRITE) {
+			state = (struct cs_state *)card->states[1];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				stop_dac(state);
+				synchronize_irq(card->irq);
+				dmabuf->ready = 0;
+				resync_dma_ptrs(state);
+				dmabuf->swptr = dmabuf->hwptr = 0;
+				dmabuf->count = dmabuf->total_bytes = 0;
+				dmabuf->blocks = 0;
+				dmabuf->SGok = 0;
+			}
+		}
+		if (file->f_mode & FMODE_READ) {
+			state = (struct cs_state *)card->states[0];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				stop_adc(state);
+				synchronize_irq(card->irq);
+				resync_dma_ptrs(state);
+				dmabuf->ready = 0;
+				dmabuf->swptr = dmabuf->hwptr = 0;
+				dmabuf->count = dmabuf->total_bytes = 0;
+				dmabuf->blocks = 0;
+				dmabuf->SGok = 0;
+			}
+		}
+		CS_DBGOUT(CS_IOCTL, 2, printk("cs46xx: DSP_RESET()-\n") );
+		return 0;
+
+	case SNDCTL_DSP_SYNC:
+		if (file->f_mode & FMODE_WRITE)
+			return drain_dac(state, file->f_flags & O_NONBLOCK);
+		return 0;
+
+	case SNDCTL_DSP_SPEED: /* set sample rate */
+		if (get_user(val, p))
+			return -EFAULT;
+		if (val >= 0) {
+			if (file->f_mode & FMODE_READ) {
+				state = (struct cs_state *)card->states[0];
+				if(state)
+				{
+					dmabuf = &state->dmabuf;
+					stop_adc(state);
+					dmabuf->ready = 0;
+					dmabuf->SGok = 0;
+					cs_set_adc_rate(state, val);
+					cs_set_divisor(dmabuf);
+				}
+			}
+			if (file->f_mode & FMODE_WRITE) {
+				state = (struct cs_state *)card->states[1];
+				if(state)
+				{
+					dmabuf = &state->dmabuf;
+					stop_dac(state);
+					dmabuf->ready = 0;
+					dmabuf->SGok = 0;
+					cs_set_dac_rate(state, val);
+					cs_set_divisor(dmabuf);
+				}
+			}
+			CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(
+			    "cs46xx: cs_ioctl() DSP_SPEED %s %s %d\n",
+				file->f_mode & FMODE_WRITE ? "DAC" : "",
+				file->f_mode & FMODE_READ ? "ADC" : "",
+				dmabuf->rate ) );
+			return put_user(dmabuf->rate, p);
+		}
+		return put_user(0, p);
+
+	case SNDCTL_DSP_STEREO: /* set stereo or mono channel */
+		if (get_user(val, p))
+			return -EFAULT;
+		if (file->f_mode & FMODE_WRITE) {
+			state = (struct cs_state *)card->states[1];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				stop_dac(state);
+				dmabuf->ready = 0;
+				dmabuf->SGok = 0;
+				if(val)
+					dmabuf->fmt |= CS_FMT_STEREO;
+				else
+					dmabuf->fmt &= ~CS_FMT_STEREO;
+				cs_set_divisor(dmabuf);
+				CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(
+				    "cs46xx: DSP_STEREO() DAC %s\n",
+				    (dmabuf->fmt & CS_FMT_STEREO) ?
+					"STEREO":"MONO") );
+			}
+		}
+		if (file->f_mode & FMODE_READ) {
+			state = (struct cs_state *)card->states[0];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				stop_adc(state);
+				dmabuf->ready = 0;
+				dmabuf->SGok = 0;
+				if(val)
+					dmabuf->fmt |= CS_FMT_STEREO;
+				else
+					dmabuf->fmt &= ~CS_FMT_STEREO;
+				cs_set_divisor(dmabuf);
+				CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(
+				    "cs46xx: DSP_STEREO() ADC %s\n",
+				    (dmabuf->fmt & CS_FMT_STEREO) ?
+					"STEREO":"MONO") );
+			}
+		}
+		return 0;
+
+	case SNDCTL_DSP_GETBLKSIZE:
+		if (file->f_mode & FMODE_WRITE) {
+			state = (struct cs_state *)card->states[1];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				if ((val = prog_dmabuf(state)))
+					return val;
+				return put_user(dmabuf->fragsize, p);
+			}
+		}
+		if (file->f_mode & FMODE_READ) {
+			state = (struct cs_state *)card->states[0];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				if ((val = prog_dmabuf(state)))
+					return val;
+				return put_user(dmabuf->fragsize/dmabuf->divisor, 
+						p);
+			}
+		}
+		return put_user(0, p);
+
+	case SNDCTL_DSP_GETFMTS: /* Returns a mask of supported sample format*/
+		return put_user(AFMT_S16_LE | AFMT_U8, p);
+
+	case SNDCTL_DSP_SETFMT: /* Select sample format */
+		if (get_user(val, p))
+			return -EFAULT;
+		CS_DBGOUT(CS_IOCTL | CS_PARMS, 4, printk(
+		    "cs46xx: cs_ioctl() DSP_SETFMT %s %s %s %s\n",
+			file->f_mode & FMODE_WRITE ? "DAC" : "",
+			file->f_mode & FMODE_READ ? "ADC" : "",
+			val == AFMT_S16_LE ? "16Bit Signed" : "",
+			val == AFMT_U8 ? "8Bit Unsigned" : "") );
+		valsave = val;
+		if (val != AFMT_QUERY) {
+			if(val==AFMT_S16_LE || val==AFMT_U8)
+			{
+				if (file->f_mode & FMODE_WRITE) {
+					state = (struct cs_state *)card->states[1];
+					if(state)
+					{
+						dmabuf = &state->dmabuf;
+						stop_dac(state);
+						dmabuf->ready = 0;
+						dmabuf->SGok = 0;
+						if(val==AFMT_S16_LE)
+							dmabuf->fmt |= CS_FMT_16BIT;
+						else
+							dmabuf->fmt &= ~CS_FMT_16BIT;
+						cs_set_divisor(dmabuf);
+						if((ret = prog_dmabuf(state)))
+							return ret;
+					}
+				}
+				if (file->f_mode & FMODE_READ) {
+					val = valsave;
+					state = (struct cs_state *)card->states[0];
+					if(state)
+					{
+						dmabuf = &state->dmabuf;
+						stop_adc(state);
+						dmabuf->ready = 0;
+						dmabuf->SGok = 0;
+						if(val==AFMT_S16_LE)
+							dmabuf->fmt |= CS_FMT_16BIT;
+						else
+							dmabuf->fmt &= ~CS_FMT_16BIT;
+						cs_set_divisor(dmabuf);
+						if((ret = prog_dmabuf(state)))
+							return ret;
+					}
+				}
+			}
+			else
+			{
+				CS_DBGOUT(CS_IOCTL | CS_ERROR, 2, printk(
+				    "cs46xx: DSP_SETFMT() Unsupported format (0x%x)\n",
+					valsave) );
+			}
+		}
+		else
+		{
+			if(file->f_mode & FMODE_WRITE)
+			{
+				state = (struct cs_state *)card->states[1];
+				if(state)
+					dmabuf = &state->dmabuf;
+			}
+			else if(file->f_mode & FMODE_READ)
+			{
+				state = (struct cs_state *)card->states[0];
+				if(state)
+					dmabuf = &state->dmabuf;
+			}
+		}
+		if(dmabuf)
+		{
+			if(dmabuf->fmt & CS_FMT_16BIT)
+				return put_user(AFMT_S16_LE, p);
+			else
+				return put_user(AFMT_U8, p);
+		}
+		return put_user(0, p);
+
+	case SNDCTL_DSP_CHANNELS:
+		if (get_user(val, p))
+			return -EFAULT;
+		if (val != 0) {
+			if (file->f_mode & FMODE_WRITE) {
+				state = (struct cs_state *)card->states[1];
+				if(state)
+				{
+					dmabuf = &state->dmabuf;
+					stop_dac(state);
+					dmabuf->ready = 0;
+					dmabuf->SGok = 0;
+					if(val>1)
+						dmabuf->fmt |= CS_FMT_STEREO;
+					else
+						dmabuf->fmt &= ~CS_FMT_STEREO;
+					cs_set_divisor(dmabuf);
+					if (prog_dmabuf(state))
+						return 0;
+				}
+			}
+			if (file->f_mode & FMODE_READ) {
+				state = (struct cs_state *)card->states[0];
+				if(state)
+				{
+					dmabuf = &state->dmabuf;
+					stop_adc(state);
+					dmabuf->ready = 0;
+					dmabuf->SGok = 0;
+					if(val>1)
+						dmabuf->fmt |= CS_FMT_STEREO;
+					else
+						dmabuf->fmt &= ~CS_FMT_STEREO;
+					cs_set_divisor(dmabuf);
+					if (prog_dmabuf(state))
+						return 0;
+				}
+			}
+		}
+		return put_user((dmabuf->fmt & CS_FMT_STEREO) ? 2 : 1,
+				p);
+
+	case SNDCTL_DSP_POST:
+		/*
+		 * There will be a longer than normal pause in the data.
+		 * so... do nothing, because there is nothing that we can do.
+		 */
+		return 0;
+
+	case SNDCTL_DSP_SUBDIVIDE:
+		if (file->f_mode & FMODE_WRITE) {
+			state = (struct cs_state *)card->states[1];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				if (dmabuf->subdivision)
+					return -EINVAL;
+				if (get_user(val, p))
+					return -EFAULT;
+				if (val != 1 && val != 2)
+					return -EINVAL;
+				dmabuf->subdivision = val;
+			}
+		}
+		if (file->f_mode & FMODE_READ) {
+			state = (struct cs_state *)card->states[0];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				if (dmabuf->subdivision)
+					return -EINVAL;
+				if (get_user(val, p))
+					return -EFAULT;
+				if (val != 1 && val != 2)
+					return -EINVAL;
+				dmabuf->subdivision = val;
+			}
+		}
+		return 0;
+
+	case SNDCTL_DSP_SETFRAGMENT:
+		if (get_user(val, p))
+			return -EFAULT;
+
+		if (file->f_mode & FMODE_WRITE) {
+			state = (struct cs_state *)card->states[1];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				dmabuf->ossfragshift = val & 0xffff;
+				dmabuf->ossmaxfrags = (val >> 16) & 0xffff;
+			}
+		}
+		if (file->f_mode & FMODE_READ) {
+			state = (struct cs_state *)card->states[0];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				dmabuf->ossfragshift = val & 0xffff;
+				dmabuf->ossmaxfrags = (val >> 16) & 0xffff;
+			}
+		}
+		return 0;
+
+	case SNDCTL_DSP_GETOSPACE:
+		if (!(file->f_mode & FMODE_WRITE))
+			return -EINVAL;
+		state = (struct cs_state *)card->states[1];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			spin_lock_irqsave(&state->card->lock, flags);
+			cs_update_ptr(card, CS_TRUE);
+			abinfo.fragsize = dmabuf->fragsize;
+			abinfo.fragstotal = dmabuf->numfrag;
+		/*
+		 * for mmap we always have total space available
+		 */
+			if (dmabuf->mapped)
+				abinfo.bytes = dmabuf->dmasize;
+			else
+				abinfo.bytes = dmabuf->dmasize - dmabuf->count;
+
+			abinfo.fragments = abinfo.bytes >> dmabuf->fragshift;
+			spin_unlock_irqrestore(&state->card->lock, flags);
+			return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
+		}
+		return -ENODEV;
+
+	case SNDCTL_DSP_GETISPACE:
+		if (!(file->f_mode & FMODE_READ))
+			return -EINVAL;
+		state = (struct cs_state *)card->states[0];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			spin_lock_irqsave(&state->card->lock, flags);
+			cs_update_ptr(card, CS_TRUE);
+			abinfo.fragsize = dmabuf->fragsize/dmabuf->divisor;
+			abinfo.bytes = dmabuf->count/dmabuf->divisor;
+			abinfo.fragstotal = dmabuf->numfrag;
+			abinfo.fragments = abinfo.bytes >> dmabuf->fragshift;
+			spin_unlock_irqrestore(&state->card->lock, flags);
+			return copy_to_user(argp, &abinfo, sizeof(abinfo)) ? -EFAULT : 0;
+		}
+		return -ENODEV;
+
+	case SNDCTL_DSP_NONBLOCK:
+		file->f_flags |= O_NONBLOCK;
+		return 0;
+
+	case SNDCTL_DSP_GETCAPS:
+		return put_user(DSP_CAP_REALTIME|DSP_CAP_TRIGGER|DSP_CAP_MMAP,
+			    p);
+
+	case SNDCTL_DSP_GETTRIGGER:
+		val = 0;
+		CS_DBGOUT(CS_IOCTL, 2, printk("cs46xx: DSP_GETTRIGGER()+\n") );
+		if (file->f_mode & FMODE_WRITE)
+		{
+			state = (struct cs_state *)card->states[1];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				if(dmabuf->enable & DAC_RUNNING)
+					val |= PCM_ENABLE_INPUT;
+			}
+		}
+		if (file->f_mode & FMODE_READ)
+		{
+			if(state)
+			{
+				state = (struct cs_state *)card->states[0];
+				dmabuf = &state->dmabuf;
+				if(dmabuf->enable & ADC_RUNNING)
+					val |= PCM_ENABLE_OUTPUT;
+			}
+		}
+		CS_DBGOUT(CS_IOCTL, 2, printk("cs46xx: DSP_GETTRIGGER()- val=0x%x\n",val) );
+		return put_user(val, p);
+
+	case SNDCTL_DSP_SETTRIGGER:
+		if (get_user(val, p))
+			return -EFAULT;
+		if (file->f_mode & FMODE_READ) {
+			state = (struct cs_state *)card->states[0];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				if (val & PCM_ENABLE_INPUT) {
+					if (!dmabuf->ready && (ret = prog_dmabuf(state)))
+						return ret;
+					start_adc(state);
+				} else
+					stop_adc(state);
+			}
+		}
+		if (file->f_mode & FMODE_WRITE) {
+			state = (struct cs_state *)card->states[1];
+			if(state)
+			{
+				dmabuf = &state->dmabuf;
+				if (val & PCM_ENABLE_OUTPUT) {
+					if (!dmabuf->ready && (ret = prog_dmabuf(state)))
+						return ret;
+					start_dac(state);
+				} else
+					stop_dac(state);
+			}
+		}
+		return 0;
+
+	case SNDCTL_DSP_GETIPTR:
+		if (!(file->f_mode & FMODE_READ))
+			return -EINVAL;
+		state = (struct cs_state *)card->states[0];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			spin_lock_irqsave(&state->card->lock, flags);
+			cs_update_ptr(card, CS_TRUE);
+			cinfo.bytes = dmabuf->total_bytes/dmabuf->divisor;
+			cinfo.blocks = dmabuf->count/dmabuf->divisor >> dmabuf->fragshift;
+			cinfo.ptr = dmabuf->hwptr/dmabuf->divisor;
+			spin_unlock_irqrestore(&state->card->lock, flags);
+			if (copy_to_user(argp, &cinfo, sizeof(cinfo)))
+				return -EFAULT;
+			return 0;
+		}
+		return -ENODEV;
+
+	case SNDCTL_DSP_GETOPTR:
+		if (!(file->f_mode & FMODE_WRITE))
+			return -EINVAL;
+		state = (struct cs_state *)card->states[1];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			spin_lock_irqsave(&state->card->lock, flags);
+			cs_update_ptr(card, CS_TRUE);
+			cinfo.bytes = dmabuf->total_bytes;
+			if (dmabuf->mapped)
+			{
+				cinfo.blocks = (cinfo.bytes >> dmabuf->fragshift) 
+							- dmabuf->blocks;
+				CS_DBGOUT(CS_PARMS, 8, 
+					printk("total_bytes=%d blocks=%d dmabuf->blocks=%d\n", 
+					cinfo.bytes,cinfo.blocks,dmabuf->blocks) );
+				dmabuf->blocks = cinfo.bytes >> dmabuf->fragshift;
+			}
+			else
+			{
+				cinfo.blocks = dmabuf->count >> dmabuf->fragshift;
+			}
+			cinfo.ptr = dmabuf->hwptr;
+
+			CS_DBGOUT(CS_PARMS, 4, printk(
+			    "cs46xx: GETOPTR bytes=%d blocks=%d ptr=%d\n",
+				cinfo.bytes,cinfo.blocks,cinfo.ptr) );
+			spin_unlock_irqrestore(&state->card->lock, flags);
+			if (copy_to_user(argp, &cinfo, sizeof(cinfo)))
+				return -EFAULT;
+			return 0;
+		}
+		return -ENODEV;
+
+	case SNDCTL_DSP_SETDUPLEX:
+		return 0;
+
+	case SNDCTL_DSP_GETODELAY:
+		if (!(file->f_mode & FMODE_WRITE))
+			return -EINVAL;
+		state = (struct cs_state *)card->states[1];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			spin_lock_irqsave(&state->card->lock, flags);
+			cs_update_ptr(card, CS_TRUE);
+			val = dmabuf->count;
+			spin_unlock_irqrestore(&state->card->lock, flags);
+		}
+		else
+			val = 0;
+		return put_user(val, p);
+
+	case SOUND_PCM_READ_RATE:
+		if(file->f_mode & FMODE_READ)
+			state = (struct cs_state *)card->states[0];
+		else 
+			state = (struct cs_state *)card->states[1];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			return put_user(dmabuf->rate, p);
+		}
+		return put_user(0, p);
+		
+
+	case SOUND_PCM_READ_CHANNELS:
+		if(file->f_mode & FMODE_READ)
+			state = (struct cs_state *)card->states[0];
+		else 
+			state = (struct cs_state *)card->states[1];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			return put_user((dmabuf->fmt & CS_FMT_STEREO) ? 2 : 1,
+				p);
+		}
+		return put_user(0, p);
+
+	case SOUND_PCM_READ_BITS:
+		if(file->f_mode & FMODE_READ)
+			state = (struct cs_state *)card->states[0];
+		else 
+			state = (struct cs_state *)card->states[1];
+		if(state)
+		{
+			dmabuf = &state->dmabuf;
+			return put_user((dmabuf->fmt & CS_FMT_16BIT) ? 
+			  	AFMT_S16_LE : AFMT_U8, p);
+
+		}
+		return put_user(0, p);
+
+	case SNDCTL_DSP_MAPINBUF:
+	case SNDCTL_DSP_MAPOUTBUF:
+	case SNDCTL_DSP_SETSYNCRO:
+	case SOUND_PCM_WRITE_FILTER:
+	case SOUND_PCM_READ_FILTER:
+		return -EINVAL;
+	}
+	return -EINVAL;
+}
+
+
+/*
+ *	AMP control - null AMP
+ */
+ 
+static void amp_none(struct cs_card *card, int change)
+{	
+}
+
+/*
+ *	Crystal EAPD mode
+ */
+ 
+static void amp_voyetra(struct cs_card *card, int change)
+{
+	/* Manage the EAPD bit on the Crystal 4297 
+	   and the Analog AD1885 */
+	   
+	int old=card->amplifier;
+	
+	card->amplifier+=change;
+	if(card->amplifier && !old)
+	{
+		/* Turn the EAPD amp on */
+		cs_ac97_set(card->ac97_codec[0],  AC97_POWER_CONTROL, 
+			cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) |
+				0x8000);
+	}
+	else if(old && !card->amplifier)
+	{
+		/* Turn the EAPD amp off */
+		cs_ac97_set(card->ac97_codec[0],  AC97_POWER_CONTROL, 
+			cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) &
+				~0x8000);
+	}
+}
+
+		       
+/*
+ *	Game Theatre XP card - EGPIO[2] is used to enable the external amp.
+ */
+ 
+static void amp_hercules(struct cs_card *card, int change)
+{
+	int old=card->amplifier;
+	if(!card)
+	{
+		CS_DBGOUT(CS_ERROR, 2, printk(KERN_INFO 
+			"cs46xx: amp_hercules() called before initialized.\n"));
+		return;
+	}
+	card->amplifier+=change;
+	if( (card->amplifier && !old) && !(hercules_egpio_disable))
+	{
+		CS_DBGOUT(CS_PARMS, 4, printk(KERN_INFO 
+			"cs46xx: amp_hercules() external amp enabled\n"));
+		cs461x_pokeBA0(card, BA0_EGPIODR, 
+			EGPIODR_GPOE2);     /* enable EGPIO2 output */
+		cs461x_pokeBA0(card, BA0_EGPIOPTR, 
+			EGPIOPTR_GPPT2);   /* open-drain on output */
+	}
+	else if(old && !card->amplifier)
+	{
+		CS_DBGOUT(CS_PARMS, 4, printk(KERN_INFO 
+			"cs46xx: amp_hercules() external amp disabled\n"));
+		cs461x_pokeBA0(card, BA0_EGPIODR, 0); /* disable */
+		cs461x_pokeBA0(card, BA0_EGPIOPTR, 0); /* disable */
+	}
+}
+
+/*
+ *	Handle the CLKRUN on a thinkpad. We must disable CLKRUN support
+ *	whenever we need to beat on the chip.
+ *
+ *	The original idea and code for this hack comes from David Kaiser at
+ *	Linuxcare. Perhaps one day Crystal will document their chips well
+ *	enough to make them useful.
+ */
+ 
+static void clkrun_hack(struct cs_card *card, int change)
+{
+	struct pci_dev *acpi_dev;
+	u16 control;
+	u8 pp;
+	unsigned long port;
+	int old=card->active;
+	
+	card->active+=change;
+	
+	acpi_dev = pci_find_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, NULL);
+	if(acpi_dev == NULL)
+		return;		/* Not a thinkpad thats for sure */
+
+	/* Find the control port */		
+	pci_read_config_byte(acpi_dev, 0x41, &pp);
+	port=pp<<8;
+
+	/* Read ACPI port */	
+	control=inw(port+0x10);
+
+	/* Flip CLKRUN off while running */
+	if(!card->active && old)
+	{
+		CS_DBGOUT(CS_PARMS , 9, printk( KERN_INFO
+			"cs46xx: clkrun() enable clkrun - change=%d active=%d\n",
+				change,card->active));
+		outw(control|0x2000, port+0x10);
+	}
+	else 
+	{
+	/*
+	* sometimes on a resume the bit is set, so always reset the bit.
+	*/
+		CS_DBGOUT(CS_PARMS , 9, printk( KERN_INFO
+			"cs46xx: clkrun() disable clkrun - change=%d active=%d\n",
+				change,card->active));
+		outw(control&~0x2000, port+0x10);
+	}
+}
+
+	
+static int cs_open(struct inode *inode, struct file *file)
+{
+	struct cs_card *card = (struct cs_card *)file->private_data;
+	struct cs_state *state = NULL;
+	struct dmabuf *dmabuf = NULL;
+	struct list_head *entry;
+        unsigned int minor = iminor(inode);
+	int ret=0;
+	unsigned int tmp;
+
+	CS_DBGOUT(CS_OPEN | CS_FUNCTION, 2, printk("cs46xx: cs_open()+ file=%p %s %s\n",
+		file, file->f_mode & FMODE_WRITE ? "FMODE_WRITE" : "",
+		file->f_mode & FMODE_READ ? "FMODE_READ" : "") );
+
+	list_for_each(entry, &cs46xx_devs)
+	{
+		card = list_entry(entry, struct cs_card, list);
+
+		if (!((card->dev_audio ^ minor) & ~0xf))
+			break;
+	}
+	if (entry == &cs46xx_devs)
+		return -ENODEV;
+	if (!card) {
+		CS_DBGOUT(CS_FUNCTION | CS_OPEN, 2, printk(KERN_INFO
+			"cs46xx: cs_open(): Error - unable to find audio card struct\n"));
+		return -ENODEV;
+	}
+
+	/*
+	 * hardcode state[0] for capture, [1] for playback
+	 */
+	if(file->f_mode & FMODE_READ)
+	{
+		CS_DBGOUT(CS_WAVE_READ, 2, printk("cs46xx: cs_open() FMODE_READ\n") );
+		if (card->states[0] == NULL) {
+			state = card->states[0] = (struct cs_state *)
+				kmalloc(sizeof(struct cs_state), GFP_KERNEL);
+			if (state == NULL)
+				return -ENOMEM;
+			memset(state, 0, sizeof(struct cs_state));
+			init_MUTEX(&state->sem);
+			dmabuf = &state->dmabuf;
+			dmabuf->pbuf = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
+			if(dmabuf->pbuf==NULL)
+			{
+				kfree(state);
+				card->states[0]=NULL;
+				return -ENOMEM;
+			}
+		}
+		else
+		{
+			state = card->states[0];
+			if(state->open_mode & FMODE_READ)
+				return -EBUSY;
+		}
+		dmabuf->channel = card->alloc_rec_pcm_channel(card);
+			
+		if (dmabuf->channel == NULL) {
+			kfree (card->states[0]);
+			card->states[0] = NULL;
+			return -ENODEV;
+		}
+
+		/* Now turn on external AMP if needed */
+		state->card = card;
+		state->card->active_ctrl(state->card,1);
+		state->card->amplifier_ctrl(state->card,1);
+		
+		if( (tmp = cs46xx_powerup(card, CS_POWER_ADC)) )
+		{
+			CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_INFO 
+				"cs46xx: cs46xx_powerup of ADC failed (0x%x)\n",tmp) );
+			return -EIO;
+		}
+
+		dmabuf->channel->state = state;
+		/* initialize the virtual channel */
+		state->virt = 0;
+		state->magic = CS_STATE_MAGIC;
+		init_waitqueue_head(&dmabuf->wait);
+		init_MUTEX(&state->open_sem);
+		file->private_data = card;
+
+		down(&state->open_sem);
+
+		/* set default sample format. According to OSS Programmer's Guide  /dev/dsp
+		   should be default to unsigned 8-bits, mono, with sample rate 8kHz and
+		   /dev/dspW will accept 16-bits sample */
+
+		/* Default input is 8bit mono */
+		dmabuf->fmt &= ~CS_FMT_MASK;
+		dmabuf->type = CS_TYPE_ADC;
+		dmabuf->ossfragshift = 0;
+		dmabuf->ossmaxfrags  = 0;
+		dmabuf->subdivision  = 0;
+		cs_set_adc_rate(state, 8000);
+		cs_set_divisor(dmabuf);
+
+		state->open_mode |= FMODE_READ;
+		up(&state->open_sem);
+	}
+	if(file->f_mode & FMODE_WRITE)
+	{
+		CS_DBGOUT(CS_OPEN, 2, printk("cs46xx: cs_open() FMODE_WRITE\n") );
+		if (card->states[1] == NULL) {
+			state = card->states[1] = (struct cs_state *)
+				kmalloc(sizeof(struct cs_state), GFP_KERNEL);
+			if (state == NULL)
+				return -ENOMEM;
+			memset(state, 0, sizeof(struct cs_state));
+			init_MUTEX(&state->sem);
+			dmabuf = &state->dmabuf;
+			dmabuf->pbuf = (void *)get_zeroed_page(GFP_KERNEL | GFP_DMA);
+			if(dmabuf->pbuf==NULL)
+			{
+				kfree(state);
+				card->states[1]=NULL;
+				return -ENOMEM;
+			}
+		}
+		else
+		{
+			state = card->states[1];
+			if(state->open_mode & FMODE_WRITE)
+				return -EBUSY;
+		}
+		dmabuf->channel = card->alloc_pcm_channel(card);
+			
+		if (dmabuf->channel == NULL) {
+			kfree (card->states[1]);
+			card->states[1] = NULL;
+			return -ENODEV;
+		}
+
+		/* Now turn on external AMP if needed */
+		state->card = card;
+		state->card->active_ctrl(state->card,1);
+		state->card->amplifier_ctrl(state->card,1);
+
+		if( (tmp = cs46xx_powerup(card, CS_POWER_DAC)) )
+		{
+			CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_INFO 
+				"cs46xx: cs46xx_powerup of DAC failed (0x%x)\n",tmp) );
+			return -EIO;
+		}
+		
+		dmabuf->channel->state = state;
+		/* initialize the virtual channel */
+		state->virt = 1;
+		state->magic = CS_STATE_MAGIC;
+		init_waitqueue_head(&dmabuf->wait);
+		init_MUTEX(&state->open_sem);
+		file->private_data = card;
+
+		down(&state->open_sem);
+
+		/* set default sample format. According to OSS Programmer's Guide  /dev/dsp
+		   should be default to unsigned 8-bits, mono, with sample rate 8kHz and
+		   /dev/dspW will accept 16-bits sample */
+
+		/* Default output is 8bit mono. */
+		dmabuf->fmt &= ~CS_FMT_MASK;
+		dmabuf->type = CS_TYPE_DAC;
+		dmabuf->ossfragshift = 0;
+		dmabuf->ossmaxfrags  = 0;
+		dmabuf->subdivision  = 0;
+		cs_set_dac_rate(state, 8000);
+		cs_set_divisor(dmabuf);
+
+		state->open_mode |= FMODE_WRITE;
+		up(&state->open_sem);
+		if((ret = prog_dmabuf(state)))
+			return ret;
+	}
+	CS_DBGOUT(CS_OPEN | CS_FUNCTION, 2, printk("cs46xx: cs_open()- 0\n") );
+	return nonseekable_open(inode, file);
+}
+
+static int cs_release(struct inode *inode, struct file *file)
+{
+	struct cs_card *card = (struct cs_card *)file->private_data;
+	struct dmabuf *dmabuf;
+	struct cs_state *state;
+	unsigned int tmp;
+	CS_DBGOUT(CS_RELEASE | CS_FUNCTION, 2, printk("cs46xx: cs_release()+ file=%p %s %s\n",
+		file, file->f_mode & FMODE_WRITE ? "FMODE_WRITE" : "",
+		file->f_mode & FMODE_READ ? "FMODE_READ" : "") );
+
+	if (!(file->f_mode & (FMODE_WRITE | FMODE_READ)))
+	{
+		return -EINVAL;
+	}
+	state = card->states[1];
+	if(state)
+	{
+		if ( (state->open_mode & FMODE_WRITE) & (file->f_mode & FMODE_WRITE) )
+		{
+			CS_DBGOUT(CS_RELEASE, 2, printk("cs46xx: cs_release() FMODE_WRITE\n") );
+			dmabuf = &state->dmabuf;
+			cs_clear_tail(state);
+			drain_dac(state, file->f_flags & O_NONBLOCK);
+			/* stop DMA state machine and free DMA buffers/channels */
+			down(&state->open_sem);
+			stop_dac(state);
+			dealloc_dmabuf(state);
+			state->card->free_pcm_channel(state->card, dmabuf->channel->num);
+			free_page((unsigned long)state->dmabuf.pbuf);
+
+			/* we're covered by the open_sem */
+			up(&state->open_sem);
+			state->card->states[state->virt] = NULL;
+			state->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE);
+
+			if( (tmp = cs461x_powerdown(card, CS_POWER_DAC, CS_FALSE )) )
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO 
+					"cs46xx: cs_release_mixdev() powerdown DAC failure (0x%x)\n",tmp) );
+			}
+
+			/* Now turn off external AMP if needed */
+			state->card->amplifier_ctrl(state->card, -1);
+			state->card->active_ctrl(state->card, -1);
+
+			kfree(state);
+		}
+	}
+
+	state = card->states[0];
+	if(state)
+	{
+		if ( (state->open_mode & FMODE_READ) & (file->f_mode & FMODE_READ) )
+		{
+			CS_DBGOUT(CS_RELEASE, 2, printk("cs46xx: cs_release() FMODE_READ\n") );
+			dmabuf = &state->dmabuf;
+			down(&state->open_sem);
+			stop_adc(state);
+			dealloc_dmabuf(state);
+			state->card->free_pcm_channel(state->card, dmabuf->channel->num);
+			free_page((unsigned long)state->dmabuf.pbuf);
+
+			/* we're covered by the open_sem */
+			up(&state->open_sem);
+			state->card->states[state->virt] = NULL;
+			state->open_mode &= (~file->f_mode) & (FMODE_READ|FMODE_WRITE);
+
+			if( (tmp = cs461x_powerdown(card, CS_POWER_ADC, CS_FALSE )) )
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO 
+					"cs46xx: cs_release_mixdev() powerdown ADC failure (0x%x)\n",tmp) );
+			}
+
+			/* Now turn off external AMP if needed */
+			state->card->amplifier_ctrl(state->card, -1);
+			state->card->active_ctrl(state->card, -1);
+
+			kfree(state);
+		}
+	}
+
+	CS_DBGOUT(CS_FUNCTION | CS_RELEASE, 2, printk("cs46xx: cs_release()- 0\n") );
+	return 0;
+}
+
+static void printpm(struct cs_card *s)
+{
+	CS_DBGOUT(CS_PM, 9, printk("pm struct:\n"));
+	CS_DBGOUT(CS_PM, 9, printk("flags:0x%x u32CLKCR1_SAVE: 0%x u32SSPMValue: 0x%x\n",
+		(unsigned)s->pm.flags,s->pm.u32CLKCR1_SAVE,s->pm.u32SSPMValue));
+	CS_DBGOUT(CS_PM, 9, printk("u32PPLVCvalue: 0x%x u32PPRVCvalue: 0x%x\n",
+		s->pm.u32PPLVCvalue,s->pm.u32PPRVCvalue));
+	CS_DBGOUT(CS_PM, 9, printk("u32FMLVCvalue: 0x%x u32FMRVCvalue: 0x%x\n",
+		s->pm.u32FMLVCvalue,s->pm.u32FMRVCvalue));
+	CS_DBGOUT(CS_PM, 9, printk("u32GPIORvalue: 0x%x u32JSCTLvalue: 0x%x\n",
+		s->pm.u32GPIORvalue,s->pm.u32JSCTLvalue));
+	CS_DBGOUT(CS_PM, 9, printk("u32SSCR: 0x%x u32SRCSA: 0x%x\n",
+		s->pm.u32SSCR,s->pm.u32SRCSA));
+	CS_DBGOUT(CS_PM, 9, printk("u32DacASR: 0x%x u32AdcASR: 0x%x\n",
+		s->pm.u32DacASR,s->pm.u32AdcASR));
+	CS_DBGOUT(CS_PM, 9, printk("u32DacSR: 0x%x u32AdcSR: 0x%x\n",
+		s->pm.u32DacSR,s->pm.u32AdcSR));
+	CS_DBGOUT(CS_PM, 9, printk("u32MIDCR_Save: 0x%x\n",
+		s->pm.u32MIDCR_Save));
+	CS_DBGOUT(CS_PM, 9, printk("u32AC97_powerdown: 0x%x _general_purpose 0x%x\n",
+		s->pm.u32AC97_powerdown,s->pm.u32AC97_general_purpose));
+	CS_DBGOUT(CS_PM, 9, printk("u32AC97_master_volume: 0x%x\n",
+		s->pm.u32AC97_master_volume));
+	CS_DBGOUT(CS_PM, 9, printk("u32AC97_headphone_volume: 0x%x\n",
+		s->pm.u32AC97_headphone_volume));
+	CS_DBGOUT(CS_PM, 9, printk("u32AC97_master_volume_mono: 0x%x\n",
+		s->pm.u32AC97_master_volume_mono));
+	CS_DBGOUT(CS_PM, 9, printk("u32AC97_pcm_out_volume: 0x%x\n",
+		s->pm.u32AC97_pcm_out_volume));
+	CS_DBGOUT(CS_PM, 9, printk("dmabuf_swptr_play: 0x%x dmabuf_count_play: %d\n",
+		s->pm.dmabuf_swptr_play,s->pm.dmabuf_count_play));
+	CS_DBGOUT(CS_PM, 9, printk("dmabuf_swptr_capture: 0x%x dmabuf_count_capture: %d\n",
+		s->pm.dmabuf_swptr_capture,s->pm.dmabuf_count_capture));
+
+}
+
+/****************************************************************************
+*
+*  Suspend - save the ac97 regs, mute the outputs and power down the part.  
+*
+****************************************************************************/
+static void cs46xx_ac97_suspend(struct cs_card *card)
+{
+	int Count,i;
+	struct ac97_codec *dev=card->ac97_codec[0];
+	unsigned int tmp;
+
+	CS_DBGOUT(CS_PM, 9, printk("cs46xx: cs46xx_ac97_suspend()+\n"));
+
+	if(card->states[1])
+	{
+		stop_dac(card->states[1]);
+		resync_dma_ptrs(card->states[1]);
+	}
+	if(card->states[0])
+	{
+		stop_adc(card->states[0]);
+		resync_dma_ptrs(card->states[0]);
+	}
+
+	for(Count = 0x2, i=0; (Count <= CS46XX_AC97_HIGHESTREGTORESTORE)
+			&& (i < CS46XX_AC97_NUMBER_RESTORE_REGS); 
+		Count += 2, i++)
+	{
+		card->pm.ac97[i] = cs_ac97_get(dev, BA0_AC97_RESET + Count);
+	}
+/*
+* Save the ac97 volume registers as well as the current powerdown state.
+* Now, mute the all the outputs (master, headphone, and mono), as well
+* as the PCM volume, in preparation for powering down the entire part.
+	card->pm.u32AC97_master_volume = (u32)cs_ac97_get( dev, 
+			(u8)BA0_AC97_MASTER_VOLUME); 
+	card->pm.u32AC97_headphone_volume = (u32)cs_ac97_get(dev, 
+			(u8)BA0_AC97_HEADPHONE_VOLUME); 
+	card->pm.u32AC97_master_volume_mono = (u32)cs_ac97_get(dev, 
+			(u8)BA0_AC97_MASTER_VOLUME_MONO); 
+	card->pm.u32AC97_pcm_out_volume = (u32)cs_ac97_get(dev, 
+			(u8)BA0_AC97_PCM_OUT_VOLUME);
+*/ 
+/*
+* mute the outputs
+*/
+	cs_ac97_set(dev, (u8)BA0_AC97_MASTER_VOLUME, 0x8000);
+	cs_ac97_set(dev, (u8)BA0_AC97_HEADPHONE_VOLUME, 0x8000);
+	cs_ac97_set(dev, (u8)BA0_AC97_MASTER_VOLUME_MONO, 0x8000);
+	cs_ac97_set(dev, (u8)BA0_AC97_PCM_OUT_VOLUME, 0x8000);
+
+/*
+* save the registers that cause pops
+*/
+	card->pm.u32AC97_powerdown = (u32)cs_ac97_get(dev, (u8)AC97_POWER_CONTROL); 
+	card->pm.u32AC97_general_purpose = (u32)cs_ac97_get(dev, (u8)BA0_AC97_GENERAL_PURPOSE); 
+/*
+* And power down everything on the AC97 codec.
+* well, for now, only power down the DAC/ADC and MIXER VREFON components. 
+* trouble with removing VREF.
+*/
+	if( (tmp = cs461x_powerdown(card, CS_POWER_DAC | CS_POWER_ADC |
+			CS_POWER_MIXVON, CS_TRUE )) )
+	{
+		CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_INFO 
+			"cs46xx: cs46xx_ac97_suspend() failure (0x%x)\n",tmp) );
+	}
+
+	CS_DBGOUT(CS_PM, 9, printk("cs46xx: cs46xx_ac97_suspend()-\n"));
+}
+
+/****************************************************************************
+*
+*  Resume - power up the part and restore its registers..  
+*
+****************************************************************************/
+static void cs46xx_ac97_resume(struct cs_card *card)
+{
+	int Count,i;
+	struct ac97_codec *dev=card->ac97_codec[0];
+
+	CS_DBGOUT(CS_PM, 9, printk("cs46xx: cs46xx_ac97_resume()+\n"));
+
+/*
+* First, we restore the state of the general purpose register.  This
+* contains the mic select (mic1 or mic2) and if we restore this after
+* we restore the mic volume/boost state and mic2 was selected at
+* suspend time, we will end up with a brief period of time where mic1
+* is selected with the volume/boost settings for mic2, causing
+* acoustic feedback.  So we restore the general purpose register
+* first, thereby getting the correct mic selected before we restore
+* the mic volume/boost.
+*/
+	cs_ac97_set(dev, (u8)BA0_AC97_GENERAL_PURPOSE, 
+		(u16)card->pm.u32AC97_general_purpose);
+/*
+* Now, while the outputs are still muted, restore the state of power
+* on the AC97 part.
+*/
+	cs_ac97_set(dev, (u8)BA0_AC97_POWERDOWN, (u16)card->pm.u32AC97_powerdown);
+	mdelay(5 * cs_laptop_wait);
+/*
+* Restore just the first set of registers, from register number
+* 0x02 to the register number that ulHighestRegToRestore specifies.
+*/
+	for(	Count = 0x2, i=0; 
+		(Count <= CS46XX_AC97_HIGHESTREGTORESTORE)
+			&& (i < CS46XX_AC97_NUMBER_RESTORE_REGS); 
+		Count += 2, i++)
+	{
+		cs_ac97_set(dev, (u8)(BA0_AC97_RESET + Count), (u16)card->pm.ac97[i]);
+	}
+
+	/* Check if we have to init the amplifier */
+	if(card->amp_init)
+		card->amp_init(card);
+        
+	CS_DBGOUT(CS_PM, 9, printk("cs46xx: cs46xx_ac97_resume()-\n"));
+}
+
+
+static int cs46xx_restart_part(struct cs_card *card)
+{
+	struct dmabuf *dmabuf;
+	CS_DBGOUT(CS_PM | CS_FUNCTION, 4, 
+		printk( "cs46xx: cs46xx_restart_part()+\n"));
+	if(card->states[1])
+	{
+		dmabuf = &card->states[1]->dmabuf;
+		dmabuf->ready = 0;
+		resync_dma_ptrs(card->states[1]);
+		cs_set_divisor(dmabuf);
+		if(__prog_dmabuf(card->states[1]))
+		{
+			CS_DBGOUT(CS_PM | CS_ERROR, 1, 
+				printk("cs46xx: cs46xx_restart_part()- (-1) prog_dmabuf() dac error\n"));
+			return -1;
+		}
+		cs_set_dac_rate(card->states[1], dmabuf->rate);
+	}
+	if(card->states[0])
+	{
+		dmabuf = &card->states[0]->dmabuf;
+		dmabuf->ready = 0;
+		resync_dma_ptrs(card->states[0]);
+		cs_set_divisor(dmabuf);
+		if(__prog_dmabuf(card->states[0]))
+		{
+			CS_DBGOUT(CS_PM | CS_ERROR, 1, 
+				printk("cs46xx: cs46xx_restart_part()- (-1) prog_dmabuf() adc error\n"));
+			return -1;
+		}
+		cs_set_adc_rate(card->states[0], dmabuf->rate);
+	}
+	card->pm.flags |= CS46XX_PM_RESUMED;
+	if(card->states[0])
+		start_adc(card->states[0]);
+	if(card->states[1])
+		start_dac(card->states[1]);
+
+	card->pm.flags |= CS46XX_PM_IDLE;
+	card->pm.flags &= ~(CS46XX_PM_SUSPENDING | CS46XX_PM_SUSPENDED 
+			| CS46XX_PM_RESUMING | CS46XX_PM_RESUMED);
+	if(card->states[0])
+		wake_up(&card->states[0]->dmabuf.wait);
+	if(card->states[1])
+		wake_up(&card->states[1]->dmabuf.wait);
+
+	CS_DBGOUT(CS_PM | CS_FUNCTION, 4, 
+		printk( "cs46xx: cs46xx_restart_part()-\n"));
+	return 0;
+}
+
+
+static void cs461x_reset(struct cs_card *card);
+static void cs461x_proc_stop(struct cs_card *card);
+static int cs46xx_suspend(struct cs_card *card, u32 state)
+{
+	unsigned int tmp;
+	CS_DBGOUT(CS_PM | CS_FUNCTION, 4, 
+		printk("cs46xx: cs46xx_suspend()+ flags=0x%x s=%p\n",
+			(unsigned)card->pm.flags,card));
+/*
+* check the current state, only suspend if IDLE
+*/
+	if(!(card->pm.flags & CS46XX_PM_IDLE))
+	{
+		CS_DBGOUT(CS_PM | CS_ERROR, 2, 
+			printk("cs46xx: cs46xx_suspend() unable to suspend, not IDLE\n"));
+		return 1;
+	}
+	card->pm.flags &= ~CS46XX_PM_IDLE;
+	card->pm.flags |= CS46XX_PM_SUSPENDING;
+
+	card->active_ctrl(card,1);
+	
+	tmp = cs461x_peek(card, BA1_PFIE);
+	tmp &= ~0x0000f03f;
+	tmp |=  0x00000010;
+	cs461x_poke(card, BA1_PFIE, tmp);	/* playback interrupt disable */
+
+	tmp = cs461x_peek(card, BA1_CIE);
+	tmp &= ~0x0000003f;
+	tmp |=  0x00000011;
+	cs461x_poke(card, BA1_CIE, tmp);	/* capture interrupt disable */
+
+	/*
+         *  Stop playback DMA.
+	 */
+	tmp = cs461x_peek(card, BA1_PCTL);
+	cs461x_poke(card, BA1_PCTL, tmp & 0x0000ffff);
+
+	/*
+         *  Stop capture DMA.
+	 */
+	tmp = cs461x_peek(card, BA1_CCTL);
+	cs461x_poke(card, BA1_CCTL, tmp & 0xffff0000);
+
+	if(card->states[1])
+	{
+		card->pm.dmabuf_swptr_play = card->states[1]->dmabuf.swptr;
+		card->pm.dmabuf_count_play = card->states[1]->dmabuf.count;
+	}
+	if(card->states[0])
+	{
+		card->pm.dmabuf_swptr_capture = card->states[0]->dmabuf.swptr;
+		card->pm.dmabuf_count_capture = card->states[0]->dmabuf.count;
+	}
+
+	cs46xx_ac97_suspend(card);
+
+	/*
+         *  Reset the processor.
+         */
+	cs461x_reset(card);
+
+	cs461x_proc_stop(card);
+
+	/*
+	 *  Power down the DAC and ADC.  For now leave the other areas on.
+	 */
+	cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, 0x0300);
+
+	/*
+	 *  Power down the PLL.
+	 */
+	cs461x_pokeBA0(card, BA0_CLKCR1, 0);
+
+	/*
+	 *  Turn off the Processor by turning off the software clock enable flag in 
+	 *  the clock control register.
+	 */
+	tmp = cs461x_peekBA0(card, BA0_CLKCR1) & ~CLKCR1_SWCE;
+	cs461x_pokeBA0(card, BA0_CLKCR1, tmp);
+
+	card->active_ctrl(card,-1);
+
+	card->pm.flags &= ~CS46XX_PM_SUSPENDING;
+	card->pm.flags |= CS46XX_PM_SUSPENDED;
+
+	printpm(card);
+
+	CS_DBGOUT(CS_PM | CS_FUNCTION, 4, 
+		printk("cs46xx: cs46xx_suspend()- flags=0x%x\n",
+			(unsigned)card->pm.flags));
+	return 0;
+}
+
+static int cs46xx_resume(struct cs_card *card)
+{
+	int i;
+
+	CS_DBGOUT(CS_PM | CS_FUNCTION, 4, 
+		printk( "cs46xx: cs46xx_resume()+ flags=0x%x\n",
+			(unsigned)card->pm.flags));
+	if(!(card->pm.flags & CS46XX_PM_SUSPENDED))
+	{
+		CS_DBGOUT(CS_PM | CS_ERROR, 2, 
+			printk("cs46xx: cs46xx_resume() unable to resume, not SUSPENDED\n"));
+		return 1;
+	}
+	card->pm.flags |= CS46XX_PM_RESUMING;
+	card->pm.flags &= ~CS46XX_PM_SUSPENDED;
+	printpm(card);
+	card->active_ctrl(card, 1);
+
+	for(i=0;i<5;i++)
+	{
+		if (cs_hardware_init(card) != 0)
+		{
+			CS_DBGOUT(CS_PM | CS_ERROR, 4, printk(
+				"cs46xx: cs46xx_resume()- ERROR in cs_hardware_init()\n"));
+			mdelay(10 * cs_laptop_wait);
+			cs461x_reset(card);
+			continue;
+		}
+		break;
+	}
+	if(i>=4)
+	{
+		CS_DBGOUT(CS_PM | CS_ERROR, 1, printk(
+			"cs46xx: cs46xx_resume()- cs_hardware_init() failed, retried %d times.\n",i));
+		return 0;
+	}
+
+	if(cs46xx_restart_part(card))
+	{
+		CS_DBGOUT(CS_PM | CS_ERROR, 4, printk(
+			"cs46xx: cs46xx_resume(): cs46xx_restart_part() returned error\n"));
+	}
+
+	card->active_ctrl(card, -1);
+
+	CS_DBGOUT(CS_PM | CS_FUNCTION, 4, printk("cs46xx: cs46xx_resume()- flags=0x%x\n",
+		(unsigned)card->pm.flags));
+	return 0;
+}
+
+static /*const*/ struct file_operations cs461x_fops = {
+	CS_OWNER	CS_THIS_MODULE
+	.llseek		= no_llseek,
+	.read		= cs_read,
+	.write		= cs_write,
+	.poll		= cs_poll,
+	.ioctl		= cs_ioctl,
+	.mmap		= cs_mmap,
+	.open		= cs_open,
+	.release	= cs_release,
+};
+
+/* Write AC97 codec registers */
+
+
+static u16 _cs_ac97_get(struct ac97_codec *dev, u8 reg)
+{
+	struct cs_card *card = dev->private_data;
+	int count,loopcnt;
+	unsigned int tmp;
+	u16 ret;
+	
+	/*
+	 *  1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
+	 *  2. Write ACCDA = Command Data Register = 470h    for data to write to AC97 
+	 *  3. Write ACCTL = Control Register = 460h for initiating the write
+	 *  4. Read ACCTL = 460h, DCV should be reset by now and 460h = 17h
+	 *  5. if DCV not cleared, break and return error
+	 *  6. Read ACSTS = Status Register = 464h, check VSTS bit
+	 */
+
+	cs461x_peekBA0(card, BA0_ACSDA);
+
+	/*
+	 *  Setup the AC97 control registers on the CS461x to send the
+	 *  appropriate command to the AC97 to perform the read.
+	 *  ACCAD = Command Address Register = 46Ch
+	 *  ACCDA = Command Data Register = 470h
+	 *  ACCTL = Control Register = 460h
+	 *  set DCV - will clear when process completed
+	 *  set CRW - Read command
+	 *  set VFRM - valid frame enabled
+	 *  set ESYN - ASYNC generation enabled
+	 *  set RSTN - ARST# inactive, AC97 codec not reset
+	 */
+
+	cs461x_pokeBA0(card, BA0_ACCAD, reg);
+	cs461x_pokeBA0(card, BA0_ACCDA, 0);
+	cs461x_pokeBA0(card, BA0_ACCTL, ACCTL_DCV | ACCTL_CRW |
+					     ACCTL_VFRM | ACCTL_ESYN |
+					     ACCTL_RSTN);
+
+
+	/*
+	 *  Wait for the read to occur.
+	 */
+	if(!(card->pm.flags & CS46XX_PM_IDLE))
+		loopcnt = 2000;
+	else
+		loopcnt = 500 * cs_laptop_wait;
+ 	loopcnt *= cs_laptop_wait;
+	for (count = 0; count < loopcnt; count++) {
+		/*
+		 *  First, we want to wait for a short time.
+	 	 */
+		udelay(10 * cs_laptop_wait);
+		/*
+		 *  Now, check to see if the read has completed.
+		 *  ACCTL = 460h, DCV should be reset by now and 460h = 17h
+		 */
+		if (!(cs461x_peekBA0(card, BA0_ACCTL) & ACCTL_DCV))
+			break;
+	}
+
+	/*
+	 *  Make sure the read completed.
+	 */
+	if (cs461x_peekBA0(card, BA0_ACCTL) & ACCTL_DCV) {
+		CS_DBGOUT(CS_ERROR, 1, printk(KERN_WARNING 
+			"cs46xx: AC'97 read problem (ACCTL_DCV), reg = 0x%x returning 0xffff\n", reg));
+		return 0xffff;
+	}
+
+	/*
+	 *  Wait for the valid status bit to go active.
+	 */
+
+	if(!(card->pm.flags & CS46XX_PM_IDLE))
+		loopcnt = 2000;
+	else
+		loopcnt = 1000;
+ 	loopcnt *= cs_laptop_wait;
+	for (count = 0; count < loopcnt; count++) {
+		/*
+		 *  Read the AC97 status register.
+		 *  ACSTS = Status Register = 464h
+		 *  VSTS - Valid Status
+		 */
+		if (cs461x_peekBA0(card, BA0_ACSTS) & ACSTS_VSTS)
+			break;
+		udelay(10 * cs_laptop_wait);
+	}
+	
+	/*
+	 *  Make sure we got valid status.
+	 */
+	if (!( (tmp=cs461x_peekBA0(card, BA0_ACSTS)) & ACSTS_VSTS)) {
+		CS_DBGOUT(CS_ERROR, 2, printk(KERN_WARNING 
+			"cs46xx: AC'97 read problem (ACSTS_VSTS), reg = 0x%x val=0x%x 0xffff \n", 
+				reg, tmp));
+		return 0xffff;
+	}
+
+	/*
+	 *  Read the data returned from the AC97 register.
+	 *  ACSDA = Status Data Register = 474h
+	 */
+	CS_DBGOUT(CS_FUNCTION, 9, printk(KERN_INFO
+		"cs46xx: cs_ac97_get() reg = 0x%x, val = 0x%x, BA0_ACCAD = 0x%x\n", 
+			reg, cs461x_peekBA0(card, BA0_ACSDA),
+			cs461x_peekBA0(card, BA0_ACCAD)));
+	ret = cs461x_peekBA0(card, BA0_ACSDA);
+	return ret;
+}
+
+static u16 cs_ac97_get(struct ac97_codec *dev, u8 reg)
+{
+	u16 ret;
+	struct cs_card *card = dev->private_data;
+	
+	spin_lock(&card->ac97_lock);
+	ret = _cs_ac97_get(dev, reg);
+	spin_unlock(&card->ac97_lock);
+	return ret;
+}
+
+static void cs_ac97_set(struct ac97_codec *dev, u8 reg, u16 val)
+{
+	struct cs_card *card = dev->private_data;
+	int count;
+	int val2 = 0;
+	
+	spin_lock(&card->ac97_lock);
+	
+	if(reg == AC97_CD_VOL)
+	{
+		val2 = _cs_ac97_get(dev, AC97_CD_VOL);
+	}
+	
+	
+	/*
+	 *  1. Write ACCAD = Command Address Register = 46Ch for AC97 register address
+	 *  2. Write ACCDA = Command Data Register = 470h    for data to write to AC97
+	 *  3. Write ACCTL = Control Register = 460h for initiating the write
+	 *  4. Read ACCTL = 460h, DCV should be reset by now and 460h = 07h
+	 *  5. if DCV not cleared, break and return error
+	 */
+
+	/*
+	 *  Setup the AC97 control registers on the CS461x to send the
+	 *  appropriate command to the AC97 to perform the read.
+	 *  ACCAD = Command Address Register = 46Ch
+	 *  ACCDA = Command Data Register = 470h
+	 *  ACCTL = Control Register = 460h
+	 *  set DCV - will clear when process completed
+	 *  reset CRW - Write command
+	 *  set VFRM - valid frame enabled
+	 *  set ESYN - ASYNC generation enabled
+	 *  set RSTN - ARST# inactive, AC97 codec not reset
+         */
+	cs461x_pokeBA0(card, BA0_ACCAD, reg);
+	cs461x_pokeBA0(card, BA0_ACCDA, val);
+	cs461x_peekBA0(card, BA0_ACCTL);
+	cs461x_pokeBA0(card, BA0_ACCTL, 0 | ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN);
+	cs461x_pokeBA0(card, BA0_ACCTL, ACCTL_DCV | ACCTL_VFRM |
+				             ACCTL_ESYN | ACCTL_RSTN);
+	for (count = 0; count < 1000; count++) {
+		/*
+		 *  First, we want to wait for a short time.
+		 */
+		udelay(10 * cs_laptop_wait);
+		/*
+		 *  Now, check to see if the write has completed.
+		 *  ACCTL = 460h, DCV should be reset by now and 460h = 07h
+		 */
+		if (!(cs461x_peekBA0(card, BA0_ACCTL) & ACCTL_DCV))
+			break;
+	}
+	/*
+	 *  Make sure the write completed.
+	 */
+	if (cs461x_peekBA0(card, BA0_ACCTL) & ACCTL_DCV)
+	{
+		CS_DBGOUT(CS_ERROR, 1, printk(KERN_WARNING 
+			"cs46xx: AC'97 write problem, reg = 0x%x, val = 0x%x\n", reg, val));
+	}
+
+	spin_unlock(&card->ac97_lock);
+
+	/*
+	 *	Adjust power if the mixer is selected/deselected according
+	 *	to the CD.
+	 *
+	 *	IF the CD is a valid input source (mixer or direct) AND
+	 *		the CD is not muted THEN power is needed
+	 *
+	 *	We do two things. When record select changes the input to
+	 *	add/remove the CD we adjust the power count if the CD is
+	 *	unmuted.
+	 *
+	 *	When the CD mute changes we adjust the power level if the
+	 *	CD was a valid input.
+	 *
+	 *      We also check for CD volume != 0, as the CD mute isn't
+	 *      normally tweaked from userspace.
+	 */
+	 
+	/* CD mute change ? */
+	
+	if(reg==AC97_CD_VOL)
+	{
+		/* Mute bit change ? */
+		if((val2^val)&0x8000 || ((val2 == 0x1f1f || val == 0x1f1f) && val2 != val))
+		{
+			/* This is a hack but its cleaner than the alternatives.
+			   Right now card->ac97_codec[0] might be NULL as we are
+			   still doing codec setup. This does an early assignment
+			   to avoid the problem if it occurs */
+			   
+			if(card->ac97_codec[0]==NULL)
+				card->ac97_codec[0]=dev;
+				
+			/* Mute on */
+			if(val&0x8000 || val == 0x1f1f)
+				card->amplifier_ctrl(card, -1);
+			else /* Mute off power on */
+			{
+				if(card->amp_init)
+					card->amp_init(card);
+				card->amplifier_ctrl(card, 1);
+			}
+		}
+	}
+}
+
+
+/* OSS /dev/mixer file operation methods */
+
+static int cs_open_mixdev(struct inode *inode, struct file *file)
+{
+	int i=0;
+	unsigned int minor = iminor(inode);
+	struct cs_card *card=NULL;
+	struct list_head *entry;
+	unsigned int tmp;
+
+	CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
+		  printk(KERN_INFO "cs46xx: cs_open_mixdev()+\n"));
+
+	list_for_each(entry, &cs46xx_devs)
+	{
+		card = list_entry(entry, struct cs_card, list);
+		for (i = 0; i < NR_AC97; i++)
+			if (card->ac97_codec[i] != NULL &&
+			    card->ac97_codec[i]->dev_mixer == minor)
+				goto match;
+	}
+	if (!card)
+	{
+		CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2,
+			printk(KERN_INFO "cs46xx: cs46xx_open_mixdev()- -ENODEV\n"));
+		return -ENODEV;
+	}
+ match:
+	if(!card->ac97_codec[i])
+		return -ENODEV;
+	file->private_data = card->ac97_codec[i];
+
+	card->active_ctrl(card,1);
+	if(!CS_IN_USE(&card->mixer_use_cnt))
+	{
+		if( (tmp = cs46xx_powerup(card, CS_POWER_MIXVON )) )
+		{
+			CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_INFO 
+				"cs46xx: cs_open_mixdev() powerup failure (0x%x)\n",tmp) );
+			return -EIO;
+		}
+	}
+	card->amplifier_ctrl(card, 1);
+	CS_INC_USE_COUNT(&card->mixer_use_cnt);
+	CS_DBGOUT(CS_FUNCTION | CS_OPEN, 4,
+		  printk(KERN_INFO "cs46xx: cs_open_mixdev()- 0\n"));
+	return nonseekable_open(inode, file);
+}
+
+static int cs_release_mixdev(struct inode *inode, struct file *file)
+{
+	unsigned int minor = iminor(inode);
+	struct cs_card *card=NULL;
+	struct list_head *entry;
+	int i;
+	unsigned int tmp;
+
+	CS_DBGOUT(CS_FUNCTION | CS_RELEASE, 4,
+		  printk(KERN_INFO "cs46xx: cs_release_mixdev()+\n"));
+	list_for_each(entry, &cs46xx_devs)
+	{
+		card = list_entry(entry, struct cs_card, list);
+		for (i = 0; i < NR_AC97; i++)
+			if (card->ac97_codec[i] != NULL &&
+			    card->ac97_codec[i]->dev_mixer == minor)
+				goto match;
+	}
+	if (!card)
+	{
+		CS_DBGOUT(CS_FUNCTION | CS_OPEN | CS_ERROR, 2,
+			printk(KERN_INFO "cs46xx: cs46xx_open_mixdev()- -ENODEV\n"));
+		return -ENODEV;
+	}
+match:
+	if(!CS_DEC_AND_TEST(&card->mixer_use_cnt))
+	{
+		CS_DBGOUT(CS_FUNCTION | CS_RELEASE, 4,
+			  printk(KERN_INFO "cs46xx: cs_release_mixdev()- no powerdown, usecnt>0\n"));
+		card->active_ctrl(card, -1);
+		card->amplifier_ctrl(card, -1);
+		return 0;
+	}
+/*
+* ok, no outstanding mixer opens, so powerdown.
+*/
+	if( (tmp = cs461x_powerdown(card, CS_POWER_MIXVON, CS_FALSE )) )
+	{
+		CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_INFO 
+			"cs46xx: cs_release_mixdev() powerdown MIXVON failure (0x%x)\n",tmp) );
+		card->active_ctrl(card, -1);
+		card->amplifier_ctrl(card, -1);
+		return -EIO;
+	}
+	card->active_ctrl(card, -1);
+	card->amplifier_ctrl(card, -1);
+	CS_DBGOUT(CS_FUNCTION | CS_RELEASE, 4,
+		  printk(KERN_INFO "cs46xx: cs_release_mixdev()- 0\n"));
+	return 0;
+}
+
+static int cs_ioctl_mixdev(struct inode *inode, struct file *file, unsigned int cmd,
+				unsigned long arg)
+{
+	struct ac97_codec *codec = (struct ac97_codec *)file->private_data;
+	struct cs_card *card=NULL;
+	struct list_head *entry;
+	unsigned long __user *p = (long __user *)arg;
+
+#if CSDEBUG_INTERFACE
+        int val;
+
+	if( 	(cmd == SOUND_MIXER_CS_GETDBGMASK) || 
+		(cmd == SOUND_MIXER_CS_SETDBGMASK) ||
+		(cmd == SOUND_MIXER_CS_GETDBGLEVEL) ||
+		(cmd == SOUND_MIXER_CS_SETDBGLEVEL) ||
+		(cmd == SOUND_MIXER_CS_APM))
+	{
+	    switch(cmd)
+	    {
+
+		case SOUND_MIXER_CS_GETDBGMASK:
+			return put_user(cs_debugmask, p);
+		
+		case SOUND_MIXER_CS_GETDBGLEVEL:
+			return put_user(cs_debuglevel, p);
+
+		case SOUND_MIXER_CS_SETDBGMASK:
+			if (get_user(val, p))
+				return -EFAULT;
+			cs_debugmask = val;
+			return 0;
+
+		case SOUND_MIXER_CS_SETDBGLEVEL:
+			if (get_user(val, p))
+				return -EFAULT;
+			cs_debuglevel = val;
+			return 0;
+
+		case SOUND_MIXER_CS_APM:
+			if (get_user(val, p))
+				return -EFAULT;
+			if(val == CS_IOCTL_CMD_SUSPEND) 
+			{
+				list_for_each(entry, &cs46xx_devs)
+				{
+					card = list_entry(entry, struct cs_card, list);
+					cs46xx_suspend(card, 0);
+				}
+
+			}
+			else if(val == CS_IOCTL_CMD_RESUME)
+			{
+				list_for_each(entry, &cs46xx_devs)
+				{
+					card = list_entry(entry, struct cs_card, list);
+					cs46xx_resume(card);
+				}
+			}
+			else
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO
+				    "cs46xx: mixer_ioctl(): invalid APM cmd (%d)\n",
+					val));
+			}
+			return 0;
+
+		default:
+			CS_DBGOUT(CS_ERROR, 1, printk(KERN_INFO 
+				"cs46xx: mixer_ioctl(): ERROR unknown debug cmd\n") );
+			return 0;
+	    }
+	}
+#endif
+	return codec->mixer_ioctl(codec, cmd, arg);
+}
+
+static /*const*/ struct file_operations cs_mixer_fops = {
+	CS_OWNER	CS_THIS_MODULE
+	.llseek		= no_llseek,
+	.ioctl		= cs_ioctl_mixdev,
+	.open		= cs_open_mixdev,
+	.release	= cs_release_mixdev,
+};
+
+/* AC97 codec initialisation. */
+static int __init cs_ac97_init(struct cs_card *card)
+{
+	int num_ac97 = 0;
+	int ready_2nd = 0;
+	struct ac97_codec *codec;
+	u16 eid;
+
+	CS_DBGOUT(CS_FUNCTION | CS_INIT, 2, printk(KERN_INFO 
+		"cs46xx: cs_ac97_init()+\n") );
+
+	for (num_ac97 = 0; num_ac97 < NR_AC97; num_ac97++) {
+		if ((codec = ac97_alloc_codec()) == NULL)
+			return -ENOMEM;
+
+		/* initialize some basic codec information, other fields will be filled
+		   in ac97_probe_codec */
+		codec->private_data = card;
+		codec->id = num_ac97;
+
+		codec->codec_read = cs_ac97_get;
+		codec->codec_write = cs_ac97_set;
+	
+		if (ac97_probe_codec(codec) == 0)
+		{
+			CS_DBGOUT(CS_FUNCTION | CS_INIT, 2, printk(KERN_INFO 
+				"cs46xx: cs_ac97_init()- codec number %d not found\n",
+					num_ac97) );
+			card->ac97_codec[num_ac97] = NULL;
+			break;
+		}
+		CS_DBGOUT(CS_FUNCTION | CS_INIT, 2, printk(KERN_INFO 
+			"cs46xx: cs_ac97_init() found codec %d\n",num_ac97) );
+
+		eid = cs_ac97_get(codec, AC97_EXTENDED_ID);
+		
+		if(eid==0xFFFF)
+		{
+			printk(KERN_WARNING "cs46xx: codec %d not present\n",num_ac97);
+			ac97_release_codec(codec);
+			break;
+		}
+		
+		card->ac97_features = eid;
+			
+		if ((codec->dev_mixer = register_sound_mixer(&cs_mixer_fops, -1)) < 0) {
+			printk(KERN_ERR "cs46xx: couldn't register mixer!\n");
+			ac97_release_codec(codec);
+			break;
+		}
+		card->ac97_codec[num_ac97] = codec;
+
+		CS_DBGOUT(CS_FUNCTION | CS_INIT, 2, printk(KERN_INFO 
+			"cs46xx: cs_ac97_init() ac97_codec[%d] set to %p\n",
+				(unsigned int)num_ac97,
+				codec));
+		/* if there is no secondary codec at all, don't probe any more */
+		if (!ready_2nd)
+		{
+			num_ac97 += 1;
+			break;
+		}
+	}
+	CS_DBGOUT(CS_FUNCTION | CS_INIT, 2, printk(KERN_INFO 
+		"cs46xx: cs_ac97_init()- %d\n", (unsigned int)num_ac97));
+	return num_ac97;
+}
+
+/*
+ * load the static image into the DSP
+ */
+#include "cs461x_image.h"
+static void cs461x_download_image(struct cs_card *card)
+{
+    unsigned i, j, temp1, temp2, offset, count;
+    unsigned char __iomem *pBA1 = ioremap(card->ba1_addr, 0x40000);
+    for( i=0; i < CLEAR__COUNT; i++)
+    {
+        offset = ClrStat[i].BA1__DestByteOffset;
+        count  = ClrStat[i].BA1__SourceSize;
+        for(  temp1 = offset; temp1<(offset+count); temp1+=4 )
+              writel(0, pBA1+temp1);
+    }
+
+    for(i=0; i<FILL__COUNT; i++)
+    {
+        temp2 = FillStat[i].Offset;
+        for(j=0; j<(FillStat[i].Size)/4; j++)
+        {
+            temp1 = (FillStat[i]).pFill[j];
+            writel(temp1, pBA1+temp2+j*4);
+        }
+    }
+    iounmap(pBA1);
+}
+
+
+/*
+ *  Chip reset
+ */
+
+static void cs461x_reset(struct cs_card *card)
+{
+	int idx;
+
+	/*
+	 *  Write the reset bit of the SP control register.
+	 */
+	cs461x_poke(card, BA1_SPCR, SPCR_RSTSP);
+
+	/*
+	 *  Write the control register.
+	 */
+	cs461x_poke(card, BA1_SPCR, SPCR_DRQEN);
+
+	/*
+	 *  Clear the trap registers.
+	 */
+	for (idx = 0; idx < 8; idx++) {
+		cs461x_poke(card, BA1_DREG, DREG_REGID_TRAP_SELECT + idx);
+		cs461x_poke(card, BA1_TWPR, 0xFFFF);
+	}
+	cs461x_poke(card, BA1_DREG, 0);
+
+	/*
+	 *  Set the frame timer to reflect the number of cycles per frame.
+	 */
+	cs461x_poke(card, BA1_FRMT, 0xadf);
+}
+
+static void cs461x_clear_serial_FIFOs(struct cs_card *card, int type)
+{
+	int idx, loop, startfifo=0, endfifo=0, powerdown1 = 0;
+	unsigned int tmp;
+
+	/*
+	 *  See if the devices are powered down.  If so, we must power them up first
+	 *  or they will not respond.
+	 */
+	if (!((tmp = cs461x_peekBA0(card, BA0_CLKCR1)) & CLKCR1_SWCE)) {
+		cs461x_pokeBA0(card, BA0_CLKCR1, tmp | CLKCR1_SWCE);
+		powerdown1 = 1;
+	}
+
+	/*
+	 *  We want to clear out the serial port FIFOs so we don't end up playing
+	 *  whatever random garbage happens to be in them.  We fill the sample FIFOS
+	 *  with zero (silence).
+         */
+	cs461x_pokeBA0(card, BA0_SERBWP, 0);
+
+	/*
+	* Check for which FIFO locations to clear, if we are currently
+	* playing or capturing then we don't want to put in 128 bytes of
+	* "noise".
+	 */
+	if(type & CS_TYPE_DAC)
+	{
+		startfifo = 128;
+		endfifo = 256;
+	}
+	if(type & CS_TYPE_ADC)
+	{
+		startfifo = 0;
+		if(!endfifo)
+			endfifo = 128;
+	}
+	/*
+	 *  Fill sample FIFO locations (256 locations total).
+	 */
+	for (idx = startfifo; idx < endfifo; idx++) {
+		/*
+		 *  Make sure the previous FIFO write operation has completed.
+		 */
+		for (loop = 0; loop < 5; loop++) {
+			udelay(50);
+			if (!(cs461x_peekBA0(card, BA0_SERBST) & SERBST_WBSY))
+				break;
+		}
+		if (cs461x_peekBA0(card, BA0_SERBST) & SERBST_WBSY) {
+			if (powerdown1)
+				cs461x_pokeBA0(card, BA0_CLKCR1, tmp);
+		}
+		/*
+		 *  Write the serial port FIFO index.
+		 */
+		cs461x_pokeBA0(card, BA0_SERBAD, idx);
+		/*
+		 *  Tell the serial port to load the new value into the FIFO location.
+		 */
+		cs461x_pokeBA0(card, BA0_SERBCM, SERBCM_WRC);
+	}
+	/*
+	 *  Now, if we powered up the devices, then power them back down again.
+	 *  This is kinda ugly, but should never happen.
+	 */
+	if (powerdown1)
+		cs461x_pokeBA0(card, BA0_CLKCR1, tmp);
+}
+
+
+static int cs461x_powerdown(struct cs_card *card, unsigned int type, int suspendflag)
+{
+	int count;
+	unsigned int tmp=0,muted=0;
+
+	CS_DBGOUT(CS_FUNCTION, 4, printk(KERN_INFO 
+		"cs46xx: cs461x_powerdown()+ type=0x%x\n",type));
+	if(!cs_powerdown && !suspendflag)
+	{
+		CS_DBGOUT(CS_FUNCTION, 8, printk(KERN_INFO 
+			"cs46xx: cs461x_powerdown() DISABLED exiting\n"));
+		return 0;
+	}
+	tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+	CS_DBGOUT(CS_FUNCTION, 8, printk(KERN_INFO 
+		"cs46xx: cs461x_powerdown() powerdown reg=0x%x\n",tmp));
+/*
+* if powering down only the VREF, and not powering down the DAC/ADC,
+* then do not power down the VREF, UNLESS both the DAC and ADC are not
+* currently powered down.  If powering down DAC and ADC, then
+* it is possible to power down the VREF (ON).
+*/
+	if (    ((type & CS_POWER_MIXVON) && 
+		 (!(type & CS_POWER_ADC) || (!(type & CS_POWER_DAC))) )
+	      && 
+		((tmp & CS_AC97_POWER_CONTROL_ADC_ON) ||
+		 (tmp & CS_AC97_POWER_CONTROL_DAC_ON) ) )
+	{
+		CS_DBGOUT(CS_FUNCTION, 8, printk(KERN_INFO 
+			"cs46xx: cs461x_powerdown()- 0  unable to powerdown. tmp=0x%x\n",tmp));
+		return 0;
+	}
+/*
+* for now, always keep power to the mixer block.
+* not sure why it's a problem but it seems to be if we power off.
+*/
+	type &= ~CS_POWER_MIXVON;
+	type &= ~CS_POWER_MIXVOFF;
+
+	/*
+	 *  Power down indicated areas.
+	 */
+	if(type & CS_POWER_MIXVOFF)
+	{
+
+		CS_DBGOUT(CS_FUNCTION, 4, 
+			printk(KERN_INFO "cs46xx: cs461x_powerdown()+ MIXVOFF\n"));
+		/*
+		 *  Power down the MIXER (VREF ON) on the AC97 card.  
+		 */
+		tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+		if (tmp & CS_AC97_POWER_CONTROL_MIXVOFF_ON)
+		{
+			if(!muted)
+			{
+				cs_mute(card, CS_TRUE);
+				muted=1;
+			}
+			tmp |= CS_AC97_POWER_CONTROL_MIXVOFF;
+			cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, tmp );
+			/*
+			 *  Now, we wait until we sample a ready state.
+			 */
+			for (count = 0; count < 32; count++) {
+				/*
+				 *  First, lets wait a short while to let things settle out a
+				 *  bit, and to prevent retrying the read too quickly.
+				 */
+				udelay(500);
+
+				/*
+				 *  Read the current state of the power control register.
+				 */
+				if (!(cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+					CS_AC97_POWER_CONTROL_MIXVOFF_ON))
+					break;
+			}
+			
+			/*
+			 *  Check the status..
+			 */
+			if (cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+				CS_AC97_POWER_CONTROL_MIXVOFF_ON)
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_WARNING 
+					"cs46xx: powerdown MIXVOFF failed\n"));
+				return 1;
+			}
+		}
+	}
+	if(type & CS_POWER_MIXVON)
+	{
+
+		CS_DBGOUT(CS_FUNCTION, 4, 
+			printk(KERN_INFO "cs46xx: cs461x_powerdown()+ MIXVON\n"));
+		/*
+		 *  Power down the MIXER (VREF ON) on the AC97 card.  
+		 */
+		tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+		if (tmp & CS_AC97_POWER_CONTROL_MIXVON_ON)
+		{
+			if(!muted)
+			{
+				cs_mute(card, CS_TRUE);
+				muted=1;
+			}
+			tmp |= CS_AC97_POWER_CONTROL_MIXVON;
+			cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, tmp );
+			/*
+			 *  Now, we wait until we sample a ready state.
+			 */
+			for (count = 0; count < 32; count++) {
+				/*
+				 *  First, lets wait a short while to let things settle out a
+				 *  bit, and to prevent retrying the read too quickly.
+				 */
+				udelay(500);
+
+				/*
+				 *  Read the current state of the power control register.
+				 */
+				if (!(cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+					CS_AC97_POWER_CONTROL_MIXVON_ON))
+					break;
+			}
+			
+			/*
+			 *  Check the status..
+			 */
+			if (cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+				CS_AC97_POWER_CONTROL_MIXVON_ON)
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_WARNING 
+					"cs46xx: powerdown MIXVON failed\n"));
+				return 1;
+			}
+		}
+	}
+	if(type & CS_POWER_ADC)
+	{
+		/*
+		 *  Power down the ADC on the AC97 card.  
+		 */
+		CS_DBGOUT(CS_FUNCTION, 4, printk(KERN_INFO "cs46xx: cs461x_powerdown()+ ADC\n"));
+		tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+		if (tmp & CS_AC97_POWER_CONTROL_ADC_ON)
+		{
+			if(!muted)
+			{
+				cs_mute(card, CS_TRUE);
+				muted=1;
+			}
+			tmp |= CS_AC97_POWER_CONTROL_ADC;
+			cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, tmp );
+
+			/*
+			 *  Now, we wait until we sample a ready state.
+			 */
+			for (count = 0; count < 32; count++) {
+				/*
+				 *  First, lets wait a short while to let things settle out a
+				 *  bit, and to prevent retrying the read too quickly.
+				 */
+				udelay(500);
+
+				/*
+				 *  Read the current state of the power control register.
+				 */
+				if (!(cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+					CS_AC97_POWER_CONTROL_ADC_ON))
+					break;
+			}
+
+			/*
+			 *  Check the status..
+			 */
+			if (cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+				CS_AC97_POWER_CONTROL_ADC_ON)
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_WARNING 
+					"cs46xx: powerdown ADC failed\n"));
+				return 1;
+			}
+		}
+	}
+	if(type & CS_POWER_DAC)
+	{
+		/*
+		 *  Power down the DAC on the AC97 card.  
+		 */
+
+		CS_DBGOUT(CS_FUNCTION, 4, 
+			printk(KERN_INFO "cs46xx: cs461x_powerdown()+ DAC\n"));
+		tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+		if (tmp & CS_AC97_POWER_CONTROL_DAC_ON)
+		{
+			if(!muted)
+			{
+				cs_mute(card, CS_TRUE);
+				muted=1;
+			}
+			tmp |= CS_AC97_POWER_CONTROL_DAC;
+			cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, tmp );
+			/*
+			 *  Now, we wait until we sample a ready state.
+			 */
+			for (count = 0; count < 32; count++) {
+				/*
+				 *  First, lets wait a short while to let things settle out a
+				 *  bit, and to prevent retrying the read too quickly.
+				 */
+				udelay(500);
+
+				/*
+				 *  Read the current state of the power control register.
+				 */
+				if (!(cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+					CS_AC97_POWER_CONTROL_DAC_ON))
+					break;
+			}
+			
+			/*
+			 *  Check the status..
+			 */
+			if (cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+				CS_AC97_POWER_CONTROL_DAC_ON)
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_WARNING 
+					"cs46xx: powerdown DAC failed\n"));
+				return 1;
+			}
+		}
+	}
+	tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+	if(muted)
+		cs_mute(card, CS_FALSE);
+	CS_DBGOUT(CS_FUNCTION, 4, printk(KERN_INFO 
+		"cs46xx: cs461x_powerdown()- 0 tmp=0x%x\n",tmp));
+	return 0;
+}
+
+static int cs46xx_powerup(struct cs_card *card, unsigned int type)
+{
+	int count;
+	unsigned int tmp=0,muted=0;
+
+	CS_DBGOUT(CS_FUNCTION, 8, printk(KERN_INFO 
+		"cs46xx: cs46xx_powerup()+ type=0x%x\n",type));
+	/*
+	* check for VREF and powerup if need to.
+	*/
+	if(type & CS_POWER_MIXVON)
+		type |= CS_POWER_MIXVOFF;
+	if(type & (CS_POWER_DAC | CS_POWER_ADC))
+		type |= CS_POWER_MIXVON | CS_POWER_MIXVOFF;
+
+	/*
+	 *  Power up indicated areas.
+	 */
+	if(type & CS_POWER_MIXVOFF)
+	{
+
+		CS_DBGOUT(CS_FUNCTION, 4, 
+			printk(KERN_INFO "cs46xx: cs46xx_powerup()+ MIXVOFF\n"));
+		/*
+		 *  Power up the MIXER (VREF ON) on the AC97 card.  
+		 */
+		tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+		if (!(tmp & CS_AC97_POWER_CONTROL_MIXVOFF_ON))
+		{
+			if(!muted)
+			{
+				cs_mute(card, CS_TRUE);
+				muted=1;
+			}
+			tmp &= ~CS_AC97_POWER_CONTROL_MIXVOFF;
+			cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, tmp );
+			/*
+			 *  Now, we wait until we sample a ready state.
+			 */
+			for (count = 0; count < 32; count++) {
+				/*
+				 *  First, lets wait a short while to let things settle out a
+				 *  bit, and to prevent retrying the read too quickly.
+				 */
+				udelay(500);
+
+				/*
+				 *  Read the current state of the power control register.
+				 */
+				if (cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+					CS_AC97_POWER_CONTROL_MIXVOFF_ON)
+					break;
+			}
+			
+			/*
+			 *  Check the status..
+			 */
+			if (!(cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+				CS_AC97_POWER_CONTROL_MIXVOFF_ON))
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_WARNING 
+					"cs46xx: powerup MIXVOFF failed\n"));
+				return 1;
+			}
+		}
+	}
+	if(type & CS_POWER_MIXVON)
+	{
+
+		CS_DBGOUT(CS_FUNCTION, 4, 
+			printk(KERN_INFO "cs46xx: cs46xx_powerup()+ MIXVON\n"));
+		/*
+		 *  Power up the MIXER (VREF ON) on the AC97 card.  
+		 */
+		tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+		if (!(tmp & CS_AC97_POWER_CONTROL_MIXVON_ON))
+		{
+			if(!muted)
+			{
+				cs_mute(card, CS_TRUE);
+				muted=1;
+			}
+			tmp &= ~CS_AC97_POWER_CONTROL_MIXVON;
+			cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, tmp );
+			/*
+			 *  Now, we wait until we sample a ready state.
+			 */
+			for (count = 0; count < 32; count++) {
+				/*
+				 *  First, lets wait a short while to let things settle out a
+				 *  bit, and to prevent retrying the read too quickly.
+				 */
+				udelay(500);
+
+				/*
+				 *  Read the current state of the power control register.
+				 */
+				if (cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+					CS_AC97_POWER_CONTROL_MIXVON_ON)
+					break;
+			}
+			
+			/*
+			 *  Check the status..
+			 */
+			if (!(cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+				CS_AC97_POWER_CONTROL_MIXVON_ON))
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_WARNING 
+					"cs46xx: powerup MIXVON failed\n"));
+				return 1;
+			}
+		}
+	}
+	if(type & CS_POWER_ADC)
+	{
+		/*
+		 *  Power up the ADC on the AC97 card.  
+		 */
+		CS_DBGOUT(CS_FUNCTION, 4, printk(KERN_INFO "cs46xx: cs46xx_powerup()+ ADC\n"));
+		tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+		if (!(tmp & CS_AC97_POWER_CONTROL_ADC_ON))
+		{
+			if(!muted)
+			{
+				cs_mute(card, CS_TRUE);
+				muted=1;
+			}
+			tmp &= ~CS_AC97_POWER_CONTROL_ADC;
+			cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, tmp );
+
+			/*
+			 *  Now, we wait until we sample a ready state.
+			 */
+			for (count = 0; count < 32; count++) {
+				/*
+				 *  First, lets wait a short while to let things settle out a
+				 *  bit, and to prevent retrying the read too quickly.
+				 */
+				udelay(500);
+
+				/*
+				 *  Read the current state of the power control register.
+				 */
+				if (cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+					CS_AC97_POWER_CONTROL_ADC_ON)
+					break;
+			}
+
+			/*
+			 *  Check the status..
+			 */
+			if (!(cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+				CS_AC97_POWER_CONTROL_ADC_ON))
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_WARNING 
+					"cs46xx: powerup ADC failed\n"));
+				return 1;
+			}
+		}
+	}
+	if(type & CS_POWER_DAC)
+	{
+		/*
+		 *  Power up the DAC on the AC97 card.  
+		 */
+
+		CS_DBGOUT(CS_FUNCTION, 4, 
+			printk(KERN_INFO "cs46xx: cs46xx_powerup()+ DAC\n"));
+		tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+		if (!(tmp & CS_AC97_POWER_CONTROL_DAC_ON))
+		{
+			if(!muted)
+			{
+				cs_mute(card, CS_TRUE);
+				muted=1;
+			}
+			tmp &= ~CS_AC97_POWER_CONTROL_DAC;
+			cs_ac97_set(card->ac97_codec[0], AC97_POWER_CONTROL, tmp );
+			/*
+			 *  Now, we wait until we sample a ready state.
+			 */
+			for (count = 0; count < 32; count++) {
+				/*
+				 *  First, lets wait a short while to let things settle out a
+				 *  bit, and to prevent retrying the read too quickly.
+				 */
+				udelay(500);
+
+				/*
+				 *  Read the current state of the power control register.
+				 */
+				if (cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+					CS_AC97_POWER_CONTROL_DAC_ON)
+					break;
+			}
+			
+			/*
+			 *  Check the status..
+			 */
+			if (!(cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL) & 
+				CS_AC97_POWER_CONTROL_DAC_ON))
+			{
+				CS_DBGOUT(CS_ERROR, 1, printk(KERN_WARNING 
+					"cs46xx: powerup DAC failed\n"));
+				return 1;
+			}
+		}
+	}
+	tmp = cs_ac97_get(card->ac97_codec[0], AC97_POWER_CONTROL);
+	if(muted)
+		cs_mute(card, CS_FALSE);
+	CS_DBGOUT(CS_FUNCTION, 4, printk(KERN_INFO 
+		"cs46xx: cs46xx_powerup()- 0 tmp=0x%x\n",tmp));
+	return 0;
+}
+
+
+static void cs461x_proc_start(struct cs_card *card)
+{
+	int cnt;
+
+	/*
+	 *  Set the frame timer to reflect the number of cycles per frame.
+	 */
+	cs461x_poke(card, BA1_FRMT, 0xadf);
+	/*
+	 *  Turn on the run, run at frame, and DMA enable bits in the local copy of
+	 *  the SP control register.
+	 */
+	cs461x_poke(card, BA1_SPCR, SPCR_RUN | SPCR_RUNFR | SPCR_DRQEN);
+	/*
+	 *  Wait until the run at frame bit resets itself in the SP control
+	 *  register.
+	 */
+	for (cnt = 0; cnt < 25; cnt++) {
+		udelay(50);
+		if (!(cs461x_peek(card, BA1_SPCR) & SPCR_RUNFR))
+			break;
+	}
+
+	if (cs461x_peek(card, BA1_SPCR) & SPCR_RUNFR)
+		printk(KERN_WARNING "cs46xx: SPCR_RUNFR never reset\n");
+}
+
+static void cs461x_proc_stop(struct cs_card *card)
+{
+	/*
+	 *  Turn off the run, run at frame, and DMA enable bits in the local copy of
+	 *  the SP control register.
+	 */
+	cs461x_poke(card, BA1_SPCR, 0);
+}
+
+static int cs_hardware_init(struct cs_card *card)
+{
+	unsigned long end_time;
+	unsigned int tmp,count;
+	
+	CS_DBGOUT(CS_FUNCTION | CS_INIT, 2, printk(KERN_INFO 
+		"cs46xx: cs_hardware_init()+\n") );
+	/* 
+	 *  First, blast the clock control register to zero so that the PLL starts
+         *  out in a known state, and blast the master serial port control register
+         *  to zero so that the serial ports also start out in a known state.
+         */
+        cs461x_pokeBA0(card, BA0_CLKCR1, 0);
+        cs461x_pokeBA0(card, BA0_SERMC1, 0);
+
+	/*
+	 *  If we are in AC97 mode, then we must set the part to a host controlled
+         *  AC-link.  Otherwise, we won't be able to bring up the link.
+         */        
+        cs461x_pokeBA0(card, BA0_SERACC, SERACC_HSP | SERACC_CODEC_TYPE_1_03);	/* 1.03 card */
+        /* cs461x_pokeBA0(card, BA0_SERACC, SERACC_HSP | SERACC_CODEC_TYPE_2_0); */ /* 2.00 card */
+
+        /*
+         *  Drive the ARST# pin low for a minimum of 1uS (as defined in the AC97
+         *  spec) and then drive it high.  This is done for non AC97 modes since
+         *  there might be logic external to the CS461x that uses the ARST# line
+         *  for a reset.
+         */
+        cs461x_pokeBA0(card, BA0_ACCTL, 1);
+        udelay(50);
+        cs461x_pokeBA0(card, BA0_ACCTL, 0);
+        udelay(50);
+        cs461x_pokeBA0(card, BA0_ACCTL, ACCTL_RSTN);
+
+	/*
+	 *  The first thing we do here is to enable sync generation.  As soon
+	 *  as we start receiving bit clock, we'll start producing the SYNC
+	 *  signal.
+	 */
+	cs461x_pokeBA0(card, BA0_ACCTL, ACCTL_ESYN | ACCTL_RSTN);
+
+	/*
+	 *  Now wait for a short while to allow the AC97 part to start
+	 *  generating bit clock (so we don't try to start the PLL without an
+	 *  input clock).
+	 */
+	mdelay(5 * cs_laptop_wait);		/* 1 should be enough ?? (and pigs might fly) */
+
+	/*
+	 *  Set the serial port timing configuration, so that
+	 *  the clock control circuit gets its clock from the correct place.
+	 */
+	cs461x_pokeBA0(card, BA0_SERMC1, SERMC1_PTC_AC97);
+
+	/*
+	* The part seems to not be ready for a while after a resume.
+	* so, if we are resuming, then wait for 700 mils.  Note that 600 mils
+	* is not enough for some platforms! tested on an IBM Thinkpads and 
+	* reference cards.
+	*/
+	if(!(card->pm.flags & CS46XX_PM_IDLE))
+		mdelay(initdelay);
+	/*
+	 *  Write the selected clock control setup to the hardware.  Do not turn on
+	 *  SWCE yet (if requested), so that the devices clocked by the output of
+	 *  PLL are not clocked until the PLL is stable.
+	 */
+	cs461x_pokeBA0(card, BA0_PLLCC, PLLCC_LPF_1050_2780_KHZ | PLLCC_CDR_73_104_MHZ);
+	cs461x_pokeBA0(card, BA0_PLLM, 0x3a);
+	cs461x_pokeBA0(card, BA0_CLKCR2, CLKCR2_PDIVS_8);
+
+	/*
+	 *  Power up the PLL.
+	 */
+	cs461x_pokeBA0(card, BA0_CLKCR1, CLKCR1_PLLP);
+
+	/*
+         *  Wait until the PLL has stabilized.
+	 */
+	mdelay(5 * cs_laptop_wait);		/* Again 1 should be enough ?? */
+
+	/*
+	 *  Turn on clocking of the core so that we can setup the serial ports.
+	 */
+	tmp = cs461x_peekBA0(card, BA0_CLKCR1) | CLKCR1_SWCE;
+	cs461x_pokeBA0(card, BA0_CLKCR1, tmp);
+
+	/*
+	 *  Fill the serial port FIFOs with silence.
+	 */
+	cs461x_clear_serial_FIFOs(card,CS_TYPE_DAC | CS_TYPE_ADC);
+
+	/*
+	 *  Set the serial port FIFO pointer to the first sample in the FIFO.
+	 */
+	/* cs461x_pokeBA0(card, BA0_SERBSP, 0); */
+
+	/*
+	 *  Write the serial port configuration to the part.  The master
+	 *  enable bit is not set until all other values have been written.
+	 */
+	cs461x_pokeBA0(card, BA0_SERC1, SERC1_SO1F_AC97 | SERC1_SO1EN);
+	cs461x_pokeBA0(card, BA0_SERC2, SERC2_SI1F_AC97 | SERC1_SO1EN);
+	cs461x_pokeBA0(card, BA0_SERMC1, SERMC1_PTC_AC97 | SERMC1_MSPE);
+
+
+	mdelay(5 * cs_laptop_wait);		/* Shouldnt be needed ?? */
+	
+/*
+* If we are resuming under 2.2.x then we can not schedule a timeout.
+* so, just spin the CPU.
+*/
+	if(card->pm.flags & CS46XX_PM_IDLE)
+	{
+	/*
+	 * Wait for the card ready signal from the AC97 card.
+	 */
+		end_time = jiffies + 3 * (HZ >> 2);
+		do {
+		/*
+		 *  Read the AC97 status register to see if we've seen a CODEC READY
+		 *  signal from the AC97 card.
+		 */
+			if (cs461x_peekBA0(card, BA0_ACSTS) & ACSTS_CRDY)
+				break;
+			current->state = TASK_UNINTERRUPTIBLE;
+			schedule_timeout(1);
+		} while (time_before(jiffies, end_time));
+	}
+	else
+	{
+		for (count = 0; count < 100; count++) {
+		// First, we want to wait for a short time.
+			udelay(25 * cs_laptop_wait);
+
+			if (cs461x_peekBA0(card, BA0_ACSTS) & ACSTS_CRDY)
+				break;
+		}
+	}
+
+	/*
+	 *  Make sure CODEC is READY.
+	 */
+	if (!(cs461x_peekBA0(card, BA0_ACSTS) & ACSTS_CRDY)) {
+		CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_WARNING  
+			"cs46xx: create - never read card ready from AC'97\n"));
+		CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_WARNING  
+			"cs46xx: probably not a bug, try using the CS4232 driver,\n"));
+		CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_WARNING  
+			"cs46xx: or turn off any automatic Power Management support in the BIOS.\n"));
+		return -EIO;
+	}
+
+	/*
+	 *  Assert the vaid frame signal so that we can start sending commands
+	 *  to the AC97 card.
+	 */
+	cs461x_pokeBA0(card, BA0_ACCTL, ACCTL_VFRM | ACCTL_ESYN | ACCTL_RSTN);
+
+	if(card->pm.flags & CS46XX_PM_IDLE)
+	{
+	/*
+	 *  Wait until we've sampled input slots 3 and 4 as valid, meaning that
+	 *  the card is pumping ADC data across the AC-link.
+	 */
+		end_time = jiffies + 3 * (HZ >> 2);
+		do {
+			/*
+			 *  Read the input slot valid register and see if input slots 3 and
+			 *  4 are valid yet.
+			 */
+			if ((cs461x_peekBA0(card, BA0_ACISV) & (ACISV_ISV3 | ACISV_ISV4)) == (ACISV_ISV3 | ACISV_ISV4))
+				break;
+			current->state = TASK_UNINTERRUPTIBLE;
+			schedule_timeout(1);
+		} while (time_before(jiffies, end_time));
+	}
+	else
+	{
+		for (count = 0; count < 100; count++) {
+		// First, we want to wait for a short time.
+			udelay(25 * cs_laptop_wait);
+
+			if ((cs461x_peekBA0(card, BA0_ACISV) & (ACISV_ISV3 | ACISV_ISV4)) == (ACISV_ISV3 | ACISV_ISV4))
+				break;
+		}
+	}
+	/*
+	 *  Make sure input slots 3 and 4 are valid.  If not, then return
+	 *  an error.
+	 */
+	if ((cs461x_peekBA0(card, BA0_ACISV) & (ACISV_ISV3 | ACISV_ISV4)) != (ACISV_ISV3 | ACISV_ISV4)) {
+		printk(KERN_WARNING "cs46xx: create - never read ISV3 & ISV4 from AC'97\n");
+		return -EIO;
+	}
+
+	/*
+	 *  Now, assert valid frame and the slot 3 and 4 valid bits.  This will
+	 *  commense the transfer of digital audio data to the AC97 card.
+	 */
+	cs461x_pokeBA0(card, BA0_ACOSV, ACOSV_SLV3 | ACOSV_SLV4);
+
+	/*
+	 *  Turn off the Processor by turning off the software clock enable flag in 
+	 *  the clock control register.
+	 */
+	/* tmp = cs461x_peekBA0(card, BA0_CLKCR1) & ~CLKCR1_SWCE; */
+	/* cs461x_pokeBA0(card, BA0_CLKCR1, tmp); */
+
+	/*
+         *  Reset the processor.
+         */
+	cs461x_reset(card);
+
+	/*
+         *  Download the image to the processor.
+	 */
+	
+	cs461x_download_image(card);
+
+	/*
+         *  Stop playback DMA.
+	 */
+	tmp = cs461x_peek(card, BA1_PCTL);
+	card->pctl = tmp & 0xffff0000;
+	cs461x_poke(card, BA1_PCTL, tmp & 0x0000ffff);
+
+	/*
+         *  Stop capture DMA.
+	 */
+	tmp = cs461x_peek(card, BA1_CCTL);
+	card->cctl = tmp & 0x0000ffff;
+	cs461x_poke(card, BA1_CCTL, tmp & 0xffff0000);
+
+	/* initialize AC97 codec and register /dev/mixer */
+	if(card->pm.flags & CS46XX_PM_IDLE)
+	{
+		if (cs_ac97_init(card) <= 0)
+		{
+			CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_INFO 
+				"cs46xx: cs_ac97_init() failure\n") );
+			return -EIO;
+		}
+	}
+	else
+	{
+		cs46xx_ac97_resume(card);
+	}
+	
+	cs461x_proc_start(card);
+
+	/*
+	 *  Enable interrupts on the part.
+	 */
+	cs461x_pokeBA0(card, BA0_HICR, HICR_IEV | HICR_CHGM);
+
+	tmp = cs461x_peek(card, BA1_PFIE);
+	tmp &= ~0x0000f03f;
+	cs461x_poke(card, BA1_PFIE, tmp);	/* playback interrupt enable */
+
+	tmp = cs461x_peek(card, BA1_CIE);
+	tmp &= ~0x0000003f;
+	tmp |=  0x00000001;
+	cs461x_poke(card, BA1_CIE, tmp);	/* capture interrupt enable */	
+
+	/*
+	 *  If IDLE then Power down the part.  We will power components up 
+	 *  when we need them.  
+	 */
+	if(card->pm.flags & CS46XX_PM_IDLE)
+	{
+		if(!cs_powerdown)
+		{
+			if( (tmp = cs46xx_powerup(card, CS_POWER_DAC | CS_POWER_ADC |
+					CS_POWER_MIXVON )) )
+			{
+				CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_INFO 
+					"cs46xx: cs461x_powerup() failure (0x%x)\n",tmp) );
+				return -EIO;
+			}
+		}
+		else
+		{
+			if( (tmp = cs461x_powerdown(card, CS_POWER_DAC | CS_POWER_ADC |
+					CS_POWER_MIXVON, CS_FALSE )) )
+			{
+				CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_INFO 
+					"cs46xx: cs461x_powerdown() failure (0x%x)\n",tmp) );
+				return -EIO;
+			}
+		}
+	}
+	CS_DBGOUT(CS_FUNCTION | CS_INIT, 2, printk(KERN_INFO 
+		"cs46xx: cs_hardware_init()- 0\n"));
+	return 0;
+}
+
+/* install the driver, we do not allocate hardware channel nor DMA buffer now, they are defered 
+   until "ACCESS" time (in prog_dmabuf called by open/read/write/ioctl/mmap) */
+   
+/*
+ *	Card subid table
+ */
+ 
+struct cs_card_type
+{
+	u16 vendor;
+	u16 id;
+	char *name;
+	void (*amp)(struct cs_card *, int);
+	void (*amp_init)(struct cs_card *);
+	void (*active)(struct cs_card *, int);
+};
+
+static struct cs_card_type cards[] = {
+	{
+		.vendor	= 0x1489,
+		.id	= 0x7001,
+		.name	= "Genius Soundmaker 128 value",
+		.amp	= amp_none,
+	},
+	{
+		.vendor	= 0x5053,
+		.id	= 0x3357,
+		.name	= "Voyetra",
+		.amp	= amp_voyetra,
+	},
+	{
+		.vendor	= 0x1071,
+		.id	= 0x6003,
+		.name	= "Mitac MI6020/21",
+		.amp	= amp_voyetra,
+	},
+	{
+		.vendor	= 0x14AF,
+		.id	= 0x0050,
+		.name	= "Hercules Game Theatre XP",
+		.amp	= amp_hercules,
+	},
+	{
+		.vendor	= 0x1681,
+		.id	= 0x0050,
+		.name	= "Hercules Game Theatre XP",
+		.amp	= amp_hercules,
+	},
+	{
+		.vendor	= 0x1681,
+		.id	= 0x0051,
+		.name	= "Hercules Game Theatre XP",
+		.amp	= amp_hercules,
+	},
+	{
+		.vendor	= 0x1681,
+		.id	= 0x0052,
+		.name	= "Hercules Game Theatre XP",
+		.amp	= amp_hercules,
+	},
+	{
+		.vendor	= 0x1681,
+		.id	= 0x0053,
+		.name	= "Hercules Game Theatre XP",
+		.amp	= amp_hercules,
+	},
+	{
+		.vendor	= 0x1681,
+		.id	= 0x0054,
+		.name	= "Hercules Game Theatre XP",
+		.amp	= amp_hercules,
+	},
+	{
+		.vendor	= 0x1681,
+		.id	= 0xa010,
+		.name	= "Hercules Fortissimo II",
+		.amp	= amp_none,
+	},
+	/* Not sure if the 570 needs the clkrun hack */
+	{
+		.vendor	= PCI_VENDOR_ID_IBM,
+		.id	= 0x0132,
+		.name	= "Thinkpad 570",
+		.amp	= amp_none,
+		.active	= clkrun_hack,
+	},
+	{
+		.vendor	= PCI_VENDOR_ID_IBM,
+		.id	= 0x0153,
+		.name	= "Thinkpad 600X/A20/T20",
+		.amp	= amp_none,
+		.active	= clkrun_hack,
+	},
+	{
+		.vendor	= PCI_VENDOR_ID_IBM,
+		.id	= 0x1010,
+		.name	= "Thinkpad 600E (unsupported)",
+	},
+	{
+		.name	= "Card without SSID set",
+	},
+	{ 0, },
+};
+
+MODULE_AUTHOR("Alan Cox <alan@redhat.com>, Jaroslav Kysela, <pcaudio@crystal.cirrus.com>");
+MODULE_DESCRIPTION("Crystal SoundFusion Audio Support");
+MODULE_LICENSE("GPL");
+
+
+static const char cs46xx_banner[] = KERN_INFO "Crystal 4280/46xx + AC97 Audio, version " CS46XX_MAJOR_VERSION "." CS46XX_MINOR_VERSION "." CS46XX_ARCH ", " __TIME__ " " __DATE__ "\n";
+static const char fndmsg[] = KERN_INFO "cs46xx: Found %d audio device(s).\n";
+
+static int __devinit cs46xx_probe(struct pci_dev *pci_dev,
+				  const struct pci_device_id *pciid)
+{
+	struct pm_dev *pmdev;
+	int i,j;
+	u16 ss_card, ss_vendor;
+	struct cs_card *card;
+	dma_addr_t dma_mask;
+	struct cs_card_type *cp = &cards[0];
+
+	CS_DBGOUT(CS_FUNCTION | CS_INIT, 2,
+		  printk(KERN_INFO "cs46xx: probe()+\n"));
+
+	dma_mask = 0xffffffff;	/* this enables playback and recording */
+	if (pci_enable_device(pci_dev)) {
+		CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_ERR
+			 "cs46xx: pci_enable_device() failed\n"));
+		return -1;
+	}
+	if (!RSRCISMEMORYREGION(pci_dev, 0) ||
+	    !RSRCISMEMORYREGION(pci_dev, 1)) {
+		CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
+			 "cs46xx: probe()- Memory region not assigned\n"));
+		return -1;
+	}
+	if (pci_dev->irq == 0) {
+		CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
+			 "cs46xx: probe() IRQ not assigned\n"));
+		return -1;
+	}
+	if (!pci_dma_supported(pci_dev, 0xffffffff)) {
+		CS_DBGOUT(CS_ERROR, 1, printk(KERN_ERR
+		      "cs46xx: probe() architecture does not support 32bit PCI busmaster DMA\n"));
+		return -1;
+	}
+	pci_read_config_word(pci_dev, PCI_SUBSYSTEM_VENDOR_ID, &ss_vendor);
+	pci_read_config_word(pci_dev, PCI_SUBSYSTEM_ID, &ss_card);
+
+	if ((card = kmalloc(sizeof(struct cs_card), GFP_KERNEL)) == NULL) {
+		printk(KERN_ERR "cs46xx: out of memory\n");
+		return -ENOMEM;
+	}
+	memset(card, 0, sizeof(*card));
+	card->ba0_addr = RSRCADDRESS(pci_dev, 0);
+	card->ba1_addr = RSRCADDRESS(pci_dev, 1);
+	card->pci_dev = pci_dev;
+	card->irq = pci_dev->irq;
+	card->magic = CS_CARD_MAGIC;
+	spin_lock_init(&card->lock);
+	spin_lock_init(&card->ac97_lock);
+
+	pci_set_master(pci_dev);
+
+	printk(cs46xx_banner);
+	printk(KERN_INFO "cs46xx: Card found at 0x%08lx and 0x%08lx, IRQ %d\n",
+	       card->ba0_addr, card->ba1_addr, card->irq);
+
+	card->alloc_pcm_channel = cs_alloc_pcm_channel;
+	card->alloc_rec_pcm_channel = cs_alloc_rec_pcm_channel;
+	card->free_pcm_channel = cs_free_pcm_channel;
+	card->amplifier_ctrl = amp_none;
+	card->active_ctrl = amp_none;
+
+	while (cp->name)
+	{
+		if(cp->vendor == ss_vendor && cp->id == ss_card)
+		{
+			card->amplifier_ctrl = cp->amp;
+			if(cp->active)
+				card->active_ctrl = cp->active;
+			if(cp->amp_init)
+				card->amp_init = cp->amp_init;
+			break;
+		}
+		cp++;
+	}
+	if (cp->name==NULL)
+	{
+		printk(KERN_INFO "cs46xx: Unknown card (%04X:%04X) at 0x%08lx/0x%08lx, IRQ %d\n",
+			ss_vendor, ss_card, card->ba0_addr, card->ba1_addr,  card->irq);
+	}
+	else
+	{
+		printk(KERN_INFO "cs46xx: %s (%04X:%04X) at 0x%08lx/0x%08lx, IRQ %d\n",
+			cp->name, ss_vendor, ss_card, card->ba0_addr, card->ba1_addr, card->irq);
+	}
+	
+	if (card->amplifier_ctrl==NULL)
+	{
+		card->amplifier_ctrl = amp_none;
+		card->active_ctrl = clkrun_hack;
+	}		
+
+	if (external_amp == 1)
+	{
+		printk(KERN_INFO "cs46xx: Crystal EAPD support forced on.\n");
+		card->amplifier_ctrl = amp_voyetra;
+	}
+
+	if (thinkpad == 1)
+	{
+		printk(KERN_INFO "cs46xx: Activating CLKRUN hack for Thinkpad.\n");
+		card->active_ctrl = clkrun_hack;
+	}
+/*
+* The thinkpads don't work well without runtime updating on their kernel 
+* delay values (or any laptop with variable CPU speeds really).
+* so, just to be safe set the init delay to 2100.  Eliminates
+* failures on T21 Thinkpads.  remove this code when the udelay
+* and mdelay kernel code is replaced by a pm timer, or the delays
+* work well for battery and/or AC power both.
+*/
+	if(card->active_ctrl == clkrun_hack)
+	{
+		initdelay = 2100;
+		cs_laptop_wait = 5;
+	}
+	if((card->active_ctrl == clkrun_hack) && !(powerdown == 1))
+	{
+/*
+* for some currently unknown reason, powering down the DAC and ADC component
+* blocks on thinkpads causes some funky behavior... distoorrrtion and ac97 
+* codec access problems.  probably the serial clock becomes unsynced. 
+* added code to sync the chips back up, but only helped about 70% the time.
+*/
+		cs_powerdown = 0;
+	}
+	if(powerdown == 0)
+		cs_powerdown = 0;
+	card->active_ctrl(card, 1);
+
+	/* claim our iospace and irq */
+	
+	card->ba0 = ioremap_nocache(card->ba0_addr, CS461X_BA0_SIZE);
+	card->ba1.name.data0 = ioremap_nocache(card->ba1_addr + BA1_SP_DMEM0, CS461X_BA1_DATA0_SIZE);
+	card->ba1.name.data1 = ioremap_nocache(card->ba1_addr + BA1_SP_DMEM1, CS461X_BA1_DATA1_SIZE);
+	card->ba1.name.pmem = ioremap_nocache(card->ba1_addr + BA1_SP_PMEM, CS461X_BA1_PRG_SIZE);
+	card->ba1.name.reg = ioremap_nocache(card->ba1_addr + BA1_SP_REG, CS461X_BA1_REG_SIZE);
+	
+	CS_DBGOUT(CS_INIT, 4, printk(KERN_INFO 
+		"cs46xx: card=%p card->ba0=%p\n",card,card->ba0) );
+	CS_DBGOUT(CS_INIT, 4, printk(KERN_INFO 
+		"cs46xx: card->ba1=%p %p %p %p\n",
+			card->ba1.name.data0,
+			card->ba1.name.data1,
+			card->ba1.name.pmem,
+			card->ba1.name.reg) );
+
+	if(card->ba0 == 0 || card->ba1.name.data0 == 0 ||
+		card->ba1.name.data1 == 0 || card->ba1.name.pmem == 0 ||
+		card->ba1.name.reg == 0)
+		goto fail2;
+		
+	if (request_irq(card->irq, &cs_interrupt, SA_SHIRQ, "cs46xx", card)) {
+		printk(KERN_ERR "cs46xx: unable to allocate irq %d\n", card->irq);
+		goto fail2;
+	}
+	/* register /dev/dsp */
+	if ((card->dev_audio = register_sound_dsp(&cs461x_fops, -1)) < 0) {
+		printk(KERN_ERR "cs46xx: unable to register dsp\n");
+		goto fail;
+	}
+
+        /* register /dev/midi */
+        if((card->dev_midi = register_sound_midi(&cs_midi_fops, -1)) < 0)
+                printk(KERN_ERR "cs46xx: unable to register midi\n");
+                
+	card->pm.flags |= CS46XX_PM_IDLE;
+	for(i=0;i<5;i++)
+	{
+		if (cs_hardware_init(card) != 0)
+		{
+			CS_DBGOUT(CS_ERROR, 4, printk(
+				"cs46xx: ERROR in cs_hardware_init()... retrying\n"));
+			for (j = 0; j < NR_AC97; j++)
+				if (card->ac97_codec[j] != NULL) {
+					unregister_sound_mixer(card->ac97_codec[j]->dev_mixer);
+					ac97_release_codec(card->ac97_codec[j]);
+				}
+			mdelay(10 * cs_laptop_wait);
+			continue;
+		}
+		break;
+	}
+	if(i>=4)
+	{
+		CS_DBGOUT(CS_PM | CS_ERROR, 1, printk(
+			"cs46xx: cs46xx_probe()- cs_hardware_init() failed, retried %d times.\n",i));
+                unregister_sound_dsp(card->dev_audio);
+                if(card->dev_midi)
+                        unregister_sound_midi(card->dev_midi);
+                goto fail;
+	}
+
+        init_waitqueue_head(&card->midi.open_wait);
+        init_MUTEX(&card->midi.open_sem);
+        init_waitqueue_head(&card->midi.iwait);
+        init_waitqueue_head(&card->midi.owait);
+        cs461x_pokeBA0(card, BA0_MIDCR, MIDCR_MRST);   
+        cs461x_pokeBA0(card, BA0_MIDCR, 0);   
+
+	/* 
+	* Check if we have to init the amplifier, but probably already done
+	* since the CD logic in the ac97 init code will turn on the ext amp.
+	*/
+	if(cp->amp_init)
+		cp->amp_init(card);
+        card->active_ctrl(card, -1);
+
+	PCI_SET_DRIVER_DATA(pci_dev, card);
+	PCI_SET_DMA_MASK(pci_dev, dma_mask);
+	list_add(&card->list, &cs46xx_devs);
+
+	pmdev = cs_pm_register(PM_PCI_DEV, PM_PCI_ID(pci_dev), cs46xx_pm_callback);
+	if (pmdev)
+	{
+		CS_DBGOUT(CS_INIT | CS_PM, 4, printk(KERN_INFO
+			 "cs46xx: probe() pm_register() succeeded (%p).\n",
+				pmdev));
+		pmdev->data = card;
+	}
+	else
+	{
+		CS_DBGOUT(CS_INIT | CS_PM | CS_ERROR, 2, printk(KERN_INFO
+			 "cs46xx: probe() pm_register() failed (%p).\n",
+				pmdev));
+		card->pm.flags |= CS46XX_PM_NOT_REGISTERED;
+	}
+
+	CS_DBGOUT(CS_PM, 9, printk(KERN_INFO "cs46xx: pm.flags=0x%x card=%p\n",
+		(unsigned)card->pm.flags,card));
+
+	CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO
+		"cs46xx: probe()- device allocated successfully\n"));
+        return 0;
+
+fail:
+	free_irq(card->irq, card);
+fail2:
+	if(card->ba0)
+		iounmap(card->ba0);
+	if(card->ba1.name.data0)
+		iounmap(card->ba1.name.data0);
+	if(card->ba1.name.data1)
+		iounmap(card->ba1.name.data1);
+	if(card->ba1.name.pmem)
+		iounmap(card->ba1.name.pmem);
+	if(card->ba1.name.reg)
+		iounmap(card->ba1.name.reg);
+	kfree(card);
+	CS_DBGOUT(CS_INIT | CS_ERROR, 1, printk(KERN_INFO
+		"cs46xx: probe()- no device allocated\n"));
+	return -ENODEV;
+} // probe_cs46xx
+
+// --------------------------------------------------------------------- 
+
+static void __devexit cs46xx_remove(struct pci_dev *pci_dev)
+{
+	struct cs_card *card = PCI_GET_DRIVER_DATA(pci_dev);
+	int i;
+	unsigned int tmp;
+	
+	CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO
+		 "cs46xx: cs46xx_remove()+\n"));
+
+	card->active_ctrl(card,1);
+	
+	tmp = cs461x_peek(card, BA1_PFIE);
+	tmp &= ~0x0000f03f;
+	tmp |=  0x00000010;
+	cs461x_poke(card, BA1_PFIE, tmp);	/* playback interrupt disable */
+
+	tmp = cs461x_peek(card, BA1_CIE);
+	tmp &= ~0x0000003f;
+	tmp |=  0x00000011;
+	cs461x_poke(card, BA1_CIE, tmp);	/* capture interrupt disable */
+
+	/*
+         *  Stop playback DMA.
+	 */
+	tmp = cs461x_peek(card, BA1_PCTL);
+	cs461x_poke(card, BA1_PCTL, tmp & 0x0000ffff);
+
+	/*
+         *  Stop capture DMA.
+	 */
+	tmp = cs461x_peek(card, BA1_CCTL);
+	cs461x_poke(card, BA1_CCTL, tmp & 0xffff0000);
+
+	/*
+         *  Reset the processor.
+         */
+	cs461x_reset(card);
+
+	cs461x_proc_stop(card);
+
+	/*
+	 *  Power down the DAC and ADC.  We will power them up (if) when we need
+	 *  them.
+	 */
+	if( (tmp = cs461x_powerdown(card, CS_POWER_DAC | CS_POWER_ADC |
+			CS_POWER_MIXVON, CS_TRUE )) )
+	{
+		CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk(KERN_INFO 
+			"cs46xx: cs461x_powerdown() failure (0x%x)\n",tmp) );
+	}
+
+	/*
+	 *  Power down the PLL.
+	 */
+	cs461x_pokeBA0(card, BA0_CLKCR1, 0);
+
+	/*
+	 *  Turn off the Processor by turning off the software clock enable flag in 
+	 *  the clock control register.
+	 */
+	tmp = cs461x_peekBA0(card, BA0_CLKCR1) & ~CLKCR1_SWCE;
+	cs461x_pokeBA0(card, BA0_CLKCR1, tmp);
+
+	card->active_ctrl(card,-1);
+
+	/* free hardware resources */
+	free_irq(card->irq, card);
+	iounmap(card->ba0);
+	iounmap(card->ba1.name.data0);
+	iounmap(card->ba1.name.data1);
+	iounmap(card->ba1.name.pmem);
+	iounmap(card->ba1.name.reg);
+	
+	/* unregister audio devices */
+	for (i = 0; i < NR_AC97; i++)
+		if (card->ac97_codec[i] != NULL) {
+			unregister_sound_mixer(card->ac97_codec[i]->dev_mixer);
+			ac97_release_codec(card->ac97_codec[i]);
+		}
+	unregister_sound_dsp(card->dev_audio);
+        if(card->dev_midi)
+                unregister_sound_midi(card->dev_midi);
+	list_del(&card->list);
+	kfree(card);
+	PCI_SET_DRIVER_DATA(pci_dev,NULL);
+
+	CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO
+		 "cs46xx: cs46xx_remove()-: remove successful\n"));
+}
+
+enum {
+	CS46XX_4610 = 0,
+	CS46XX_4612,  	/* same as 4630 */
+	CS46XX_4615,  	/* same as 4624 */
+};
+
+static struct pci_device_id cs46xx_pci_tbl[] = {
+	{
+		.vendor	     = PCI_VENDOR_ID_CIRRUS,
+		.device	     = PCI_DEVICE_ID_CIRRUS_4610,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = CS46XX_4610,
+	},
+	{
+		.vendor	     = PCI_VENDOR_ID_CIRRUS,
+		.device	     = PCI_DEVICE_ID_CIRRUS_4612,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = CS46XX_4612,
+	},
+	{
+		.vendor	     = PCI_VENDOR_ID_CIRRUS,
+		.device	     = PCI_DEVICE_ID_CIRRUS_4615,
+		.subvendor   = PCI_ANY_ID,
+		.subdevice   = PCI_ANY_ID,
+		.driver_data = CS46XX_4615,
+	},
+	{ 0, },
+};
+
+MODULE_DEVICE_TABLE(pci, cs46xx_pci_tbl);
+
+static struct pci_driver cs46xx_pci_driver = {
+	.name	  = "cs46xx",
+	.id_table = cs46xx_pci_tbl,
+	.probe	  = cs46xx_probe,
+	.remove	  = __devexit_p(cs46xx_remove),
+	.suspend  = CS46XX_SUSPEND_TBL,
+	.resume	  = CS46XX_RESUME_TBL,
+};
+
+static int __init cs46xx_init_module(void)
+{
+	int rtn = 0;
+	CS_DBGOUT(CS_INIT | CS_FUNCTION, 2, printk(KERN_INFO 
+		"cs46xx: cs46xx_init_module()+ \n"));
+	rtn = pci_module_init(&cs46xx_pci_driver);
+
+	if(rtn == -ENODEV)
+	{
+		CS_DBGOUT(CS_ERROR | CS_INIT, 1, printk( 
+			"cs46xx: Unable to detect valid cs46xx device\n"));
+	}
+
+	CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
+		  printk(KERN_INFO "cs46xx: cs46xx_init_module()- (%d)\n",rtn));
+	return rtn;
+}
+
+static void __exit cs46xx_cleanup_module(void)
+{
+	pci_unregister_driver(&cs46xx_pci_driver);
+	cs_pm_unregister_all(cs46xx_pm_callback);
+	CS_DBGOUT(CS_INIT | CS_FUNCTION, 2,
+		  printk(KERN_INFO "cs46xx: cleanup_cs46xx() finished\n"));
+}
+
+module_init(cs46xx_init_module);
+module_exit(cs46xx_cleanup_module);
+
+#ifndef CS46XX_ACPI_SUPPORT
+static int cs46xx_pm_callback(struct pm_dev *dev, pm_request_t rqst, void *data)
+{
+	struct cs_card *card;
+
+	CS_DBGOUT(CS_PM, 2, printk(KERN_INFO 
+		"cs46xx: cs46xx_pm_callback dev=%p rqst=0x%x card=%p\n",
+			dev,(unsigned)rqst,data));
+	card = (struct cs_card *) dev->data;
+	if (card) {
+		switch(rqst) {
+			case PM_SUSPEND:
+				CS_DBGOUT(CS_PM, 2, printk(KERN_INFO
+					"cs46xx: PM suspend request\n"));
+				if(cs46xx_suspend(card, 0))
+				{
+				    CS_DBGOUT(CS_ERROR, 2, printk(KERN_INFO
+					"cs46xx: PM suspend request refused\n"));
+					return 1; 
+				}
+				break;
+			case PM_RESUME:
+				CS_DBGOUT(CS_PM, 2, printk(KERN_INFO
+					"cs46xx: PM resume request\n"));
+				if(cs46xx_resume(card))
+				{
+				    CS_DBGOUT(CS_ERROR, 2, printk(KERN_INFO
+					"cs46xx: PM resume request refused\n"));
+					return 1;
+				}
+				break;
+		}
+	}
+
+	return 0;
+}
+#endif
+
+#if CS46XX_ACPI_SUPPORT
+static int cs46xx_suspend_tbl(struct pci_dev *pcidev, pm_message_t state)
+{
+	struct cs_card *s = PCI_GET_DRIVER_DATA(pcidev);
+	CS_DBGOUT(CS_PM | CS_FUNCTION, 2, 
+		printk(KERN_INFO "cs46xx: cs46xx_suspend_tbl request\n"));
+	cs46xx_suspend(s, 0);
+	return 0;
+}
+
+static int cs46xx_resume_tbl(struct pci_dev *pcidev)
+{
+	struct cs_card *s = PCI_GET_DRIVER_DATA(pcidev);
+	CS_DBGOUT(CS_PM | CS_FUNCTION, 2, 
+		printk(KERN_INFO "cs46xx: cs46xx_resume_tbl request\n"));
+	cs46xx_resume(s);
+	return 0;
+}
+#endif