SOUND: OSS: Remove Au1550 driver.

This driver does no longer build since at least 2.6.30 and there is a
modern ALSA replacement for it.  RIP, Rot In Pieces.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 0 insertions, 2147 deletions

diff --git a/sound/oss/au1550_ac97.c b/sound/oss/au1550_ac97.c
deleted file mode 100644
index a8f626d99c5b..000000000000
--- a/sound/oss/au1550_ac97.c
+++ /dev/null
@@ -1,2147 +0,0 @@
-/*
- * au1550_ac97.c  --  Sound driver for Alchemy Au1550 MIPS Internet Edge
- *                    Processor.
- *
- * Copyright 2004 Embedded Edge, LLC
- *	dan@embeddededge.com
- *
- * Mostly copied from the au1000.c driver and some from the
- * PowerMac dbdma driver.
- * We assume the processor can do memory coherent DMA.
- *
- * Ported to 2.6 by Matt Porter <mporter@kernel.crashing.org>
- *
- *  This program is free software; you can redistribute  it and/or modify it
- *  under  the terms of  the GNU General  Public License as published by the
- *  Free Software Foundation;  either version 2 of the  License, or (at your
- *  option) any later version.
- *
- *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
- *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
- *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
- *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
- *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
- *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *  You should have received a copy of the  GNU General Public License along
- *  with this program; if not, write  to the Free Software Foundation, Inc.,
- *  675 Mass Ave, Cambridge, MA 02139, USA.
- *
- */
-
-#undef DEBUG
-
-#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/init.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/poll.h>
-#include <linux/bitops.h>
-#include <linux/spinlock.h>
-#include <linux/ac97_codec.h>
-#include <linux/mutex.h>
-
-#include <asm/io.h>
-#include <asm/uaccess.h>
-#include <asm/hardirq.h>
-#include <asm/mach-au1x00/au1xxx_psc.h>
-#include <asm/mach-au1x00/au1xxx_dbdma.h>
-#include <asm/mach-au1x00/au1xxx.h>
-
-#undef OSS_DOCUMENTED_MIXER_SEMANTICS
-
-/* misc stuff */
-#define POLL_COUNT   0x50000
-#define AC97_EXT_DACS (AC97_EXTID_SDAC | AC97_EXTID_CDAC | AC97_EXTID_LDAC)
-
-/* The number of DBDMA ring descriptors to allocate.  No sense making
- * this too large....if you can't keep up with a few you aren't likely
- * to be able to with lots of them, either.
- */
-#define NUM_DBDMA_DESCRIPTORS 4
-
-#define err(format, arg...) printk(KERN_ERR format "\n" , ## arg)
-
-/* Boot options
- * 0 = no VRA, 1 = use VRA if codec supports it
- */
-static DEFINE_MUTEX(au1550_ac97_mutex);
-static int      vra = 1;
-module_param(vra, bool, 0);
-MODULE_PARM_DESC(vra, "if 1 use VRA if codec supports it");
-
-static struct au1550_state {
-	/* soundcore stuff */
-	int             dev_audio;
-
-	struct ac97_codec *codec;
-	unsigned        codec_base_caps; /* AC'97 reg 00h, "Reset Register" */
-	unsigned        codec_ext_caps;  /* AC'97 reg 28h, "Extended Audio ID" */
-	int             no_vra;		/* do not use VRA */
-
-	spinlock_t      lock;
-	struct mutex open_mutex;
-	struct mutex sem;
-	fmode_t          open_mode;
-	wait_queue_head_t open_wait;
-
-	struct dmabuf {
-		u32		dmanr;
-		unsigned        sample_rate;
-		unsigned	src_factor;
-		unsigned        sample_size;
-		int             num_channels;
-		int		dma_bytes_per_sample;
-		int		user_bytes_per_sample;
-		int		cnt_factor;
-
-		void		*rawbuf;
-		unsigned        buforder;
-		unsigned	numfrag;
-		unsigned        fragshift;
-		void		*nextIn;
-		void		*nextOut;
-		int		count;
-		unsigned        total_bytes;
-		unsigned        error;
-		wait_queue_head_t wait;
-
-		/* redundant, but makes calculations easier */
-		unsigned	fragsize;
-		unsigned	dma_fragsize;
-		unsigned	dmasize;
-		unsigned	dma_qcount;
-
-		/* OSS stuff */
-		unsigned        mapped:1;
-		unsigned        ready:1;
-		unsigned        stopped:1;
-		unsigned        ossfragshift;
-		int             ossmaxfrags;
-		unsigned        subdivision;
-	} dma_dac, dma_adc;
-} au1550_state;
-
-static unsigned
-ld2(unsigned int x)
-{
-	unsigned        r = 0;
-
-	if (x >= 0x10000) {
-		x >>= 16;
-		r += 16;
-	}
-	if (x >= 0x100) {
-		x >>= 8;
-		r += 8;
-	}
-	if (x >= 0x10) {
-		x >>= 4;
-		r += 4;
-	}
-	if (x >= 4) {
-		x >>= 2;
-		r += 2;
-	}
-	if (x >= 2)
-		r++;
-	return r;
-}
-
-static void
-au1550_delay(int msec)
-{
-	if (in_interrupt())
-		return;
-
-	schedule_timeout_uninterruptible(msecs_to_jiffies(msec));
-}
-
-static u16
-rdcodec(struct ac97_codec *codec, u8 addr)
-{
-	struct au1550_state *s = codec->private_data;
-	unsigned long   flags;
-	u32             cmd, val;
-	u16             data;
-	int             i;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	for (i = 0; i < POLL_COUNT; i++) {
-		val = au_readl(PSC_AC97STAT);
-		au_sync();
-		if (!(val & PSC_AC97STAT_CP))
-			break;
-	}
-	if (i == POLL_COUNT)
-		err("rdcodec: codec cmd pending expired!");
-
-	cmd = (u32)PSC_AC97CDC_INDX(addr);
-	cmd |= PSC_AC97CDC_RD;	/* read command */
-	au_writel(cmd, PSC_AC97CDC);
-	au_sync();
-
-	/* now wait for the data
-	*/
-	for (i = 0; i < POLL_COUNT; i++) {
-		val = au_readl(PSC_AC97STAT);
-		au_sync();
-		if (!(val & PSC_AC97STAT_CP))
-			break;
-	}
-	if (i == POLL_COUNT) {
-		err("rdcodec: read poll expired!");
-		data = 0;
-		goto out;
-	}
-
-	/* wait for command done?
-	*/
-	for (i = 0; i < POLL_COUNT; i++) {
-		val = au_readl(PSC_AC97EVNT);
-		au_sync();
-		if (val & PSC_AC97EVNT_CD)
-			break;
-	}
-	if (i == POLL_COUNT) {
-		err("rdcodec: read cmdwait expired!");
-		data = 0;
-		goto out;
-	}
-
-	data = au_readl(PSC_AC97CDC) & 0xffff;
-	au_sync();
-
-	/* Clear command done event.
-	*/
-	au_writel(PSC_AC97EVNT_CD, PSC_AC97EVNT);
-	au_sync();
-
- out:
-	spin_unlock_irqrestore(&s->lock, flags);
-
-	return data;
-}
-
-
-static void
-wrcodec(struct ac97_codec *codec, u8 addr, u16 data)
-{
-	struct au1550_state *s = codec->private_data;
-	unsigned long   flags;
-	u32             cmd, val;
-	int             i;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	for (i = 0; i < POLL_COUNT; i++) {
-		val = au_readl(PSC_AC97STAT);
-		au_sync();
-		if (!(val & PSC_AC97STAT_CP))
-			break;
-	}
-	if (i == POLL_COUNT)
-		err("wrcodec: codec cmd pending expired!");
-
-	cmd = (u32)PSC_AC97CDC_INDX(addr);
-	cmd |= (u32)data;
-	au_writel(cmd, PSC_AC97CDC);
-	au_sync();
-
-	for (i = 0; i < POLL_COUNT; i++) {
-		val = au_readl(PSC_AC97STAT);
-		au_sync();
-		if (!(val & PSC_AC97STAT_CP))
-			break;
-	}
-	if (i == POLL_COUNT)
-		err("wrcodec: codec cmd pending expired!");
-
-	for (i = 0; i < POLL_COUNT; i++) {
-		val = au_readl(PSC_AC97EVNT);
-		au_sync();
-		if (val & PSC_AC97EVNT_CD)
-			break;
-	}
-	if (i == POLL_COUNT)
-		err("wrcodec: read cmdwait expired!");
-
-	/* Clear command done event.
-	*/
-	au_writel(PSC_AC97EVNT_CD, PSC_AC97EVNT);
-	au_sync();
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}
-
-static void
-waitcodec(struct ac97_codec *codec)
-{
-	u16	temp;
-	u32	val;
-	int	i;
-
-	/* codec_wait is used to wait for a ready state after
-	 * an AC97C_RESET.
-	 */
-	au1550_delay(10);
-
-	/* first poll the CODEC_READY tag bit
-	*/
-	for (i = 0; i < POLL_COUNT; i++) {
-		val = au_readl(PSC_AC97STAT);
-		au_sync();
-		if (val & PSC_AC97STAT_CR)
-			break;
-	}
-	if (i == POLL_COUNT) {
-		err("waitcodec: CODEC_READY poll expired!");
-		return;
-	}
-
-	/* get AC'97 powerdown control/status register
-	*/
-	temp = rdcodec(codec, AC97_POWER_CONTROL);
-
-	/* If anything is powered down, power'em up
-	*/
-	if (temp & 0x7f00) {
-		/* Power on
-		*/
-		wrcodec(codec, AC97_POWER_CONTROL, 0);
-		au1550_delay(100);
-
-		/* Reread
-		*/
-		temp = rdcodec(codec, AC97_POWER_CONTROL);
-	}
-
-	/* Check if Codec REF,ANL,DAC,ADC ready
-	*/
-	if ((temp & 0x7f0f) != 0x000f)
-		err("codec reg 26 status (0x%x) not ready!!", temp);
-}
-
-/* stop the ADC before calling */
-static void
-set_adc_rate(struct au1550_state *s, unsigned rate)
-{
-	struct dmabuf  *adc = &s->dma_adc;
-	struct dmabuf  *dac = &s->dma_dac;
-	unsigned        adc_rate, dac_rate;
-	u16             ac97_extstat;
-
-	if (s->no_vra) {
-		/* calc SRC factor
-		*/
-		adc->src_factor = ((96000 / rate) + 1) >> 1;
-		adc->sample_rate = 48000 / adc->src_factor;
-		return;
-	}
-
-	adc->src_factor = 1;
-
-	ac97_extstat = rdcodec(s->codec, AC97_EXTENDED_STATUS);
-
-	rate = rate > 48000 ? 48000 : rate;
-
-	/* enable VRA
-	*/
-	wrcodec(s->codec, AC97_EXTENDED_STATUS,
-		ac97_extstat | AC97_EXTSTAT_VRA);
-
-	/* now write the sample rate
-	*/
-	wrcodec(s->codec, AC97_PCM_LR_ADC_RATE, (u16) rate);
-
-	/* read it back for actual supported rate
-	*/
-	adc_rate = rdcodec(s->codec, AC97_PCM_LR_ADC_RATE);
-
-	pr_debug("set_adc_rate: set to %d Hz\n", adc_rate);
-
-	/* some codec's don't allow unequal DAC and ADC rates, in which case
-	 * writing one rate reg actually changes both.
-	 */
-	dac_rate = rdcodec(s->codec, AC97_PCM_FRONT_DAC_RATE);
-	if (dac->num_channels > 2)
-		wrcodec(s->codec, AC97_PCM_SURR_DAC_RATE, dac_rate);
-	if (dac->num_channels > 4)
-		wrcodec(s->codec, AC97_PCM_LFE_DAC_RATE, dac_rate);
-
-	adc->sample_rate = adc_rate;
-	dac->sample_rate = dac_rate;
-}
-
-/* stop the DAC before calling */
-static void
-set_dac_rate(struct au1550_state *s, unsigned rate)
-{
-	struct dmabuf  *dac = &s->dma_dac;
-	struct dmabuf  *adc = &s->dma_adc;
-	unsigned        adc_rate, dac_rate;
-	u16             ac97_extstat;
-
-	if (s->no_vra) {
-		/* calc SRC factor
-		*/
-		dac->src_factor = ((96000 / rate) + 1) >> 1;
-		dac->sample_rate = 48000 / dac->src_factor;
-		return;
-	}
-
-	dac->src_factor = 1;
-
-	ac97_extstat = rdcodec(s->codec, AC97_EXTENDED_STATUS);
-
-	rate = rate > 48000 ? 48000 : rate;
-
-	/* enable VRA
-	*/
-	wrcodec(s->codec, AC97_EXTENDED_STATUS,
-		ac97_extstat | AC97_EXTSTAT_VRA);
-
-	/* now write the sample rate
-	*/
-	wrcodec(s->codec, AC97_PCM_FRONT_DAC_RATE, (u16) rate);
-
-	/* I don't support different sample rates for multichannel,
-	 * so make these channels the same.
-	 */
-	if (dac->num_channels > 2)
-		wrcodec(s->codec, AC97_PCM_SURR_DAC_RATE, (u16) rate);
-	if (dac->num_channels > 4)
-		wrcodec(s->codec, AC97_PCM_LFE_DAC_RATE, (u16) rate);
-	/* read it back for actual supported rate
-	*/
-	dac_rate = rdcodec(s->codec, AC97_PCM_FRONT_DAC_RATE);
-
-	pr_debug("set_dac_rate: set to %d Hz\n", dac_rate);
-
-	/* some codec's don't allow unequal DAC and ADC rates, in which case
-	 * writing one rate reg actually changes both.
-	 */
-	adc_rate = rdcodec(s->codec, AC97_PCM_LR_ADC_RATE);
-
-	dac->sample_rate = dac_rate;
-	adc->sample_rate = adc_rate;
-}
-
-static void
-stop_dac(struct au1550_state *s)
-{
-	struct dmabuf  *db = &s->dma_dac;
-	u32		stat;
-	unsigned long   flags;
-
-	if (db->stopped)
-		return;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	au_writel(PSC_AC97PCR_TP, PSC_AC97PCR);
-	au_sync();
-
-	/* Wait for Transmit Busy to show disabled.
-	*/
-	do {
-		stat = au_readl(PSC_AC97STAT);
-		au_sync();
-	} while ((stat & PSC_AC97STAT_TB) != 0);
-
-	au1xxx_dbdma_reset(db->dmanr);
-
-	db->stopped = 1;
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}
-
-static void
-stop_adc(struct au1550_state *s)
-{
-	struct dmabuf  *db = &s->dma_adc;
-	unsigned long   flags;
-	u32		stat;
-
-	if (db->stopped)
-		return;
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	au_writel(PSC_AC97PCR_RP, PSC_AC97PCR);
-	au_sync();
-
-	/* Wait for Receive Busy to show disabled.
-	*/
-	do {
-		stat = au_readl(PSC_AC97STAT);
-		au_sync();
-	} while ((stat & PSC_AC97STAT_RB) != 0);
-
-	au1xxx_dbdma_reset(db->dmanr);
-
-	db->stopped = 1;
-
-	spin_unlock_irqrestore(&s->lock, flags);
-}
-
-
-static void
-set_xmit_slots(int num_channels)
-{
-	u32	ac97_config, stat;
-
-	ac97_config = au_readl(PSC_AC97CFG);
-	au_sync();
-	ac97_config &= ~(PSC_AC97CFG_TXSLOT_MASK | PSC_AC97CFG_DE_ENABLE);
-	au_writel(ac97_config, PSC_AC97CFG);
-	au_sync();
-
-	switch (num_channels) {
-	case 6:		/* stereo with surround and center/LFE,
-			 * slots 3,4,6,7,8,9
-			 */
-		ac97_config |= PSC_AC97CFG_TXSLOT_ENA(6);
-		ac97_config |= PSC_AC97CFG_TXSLOT_ENA(9);
-
-	case 4:		/* stereo with surround, slots 3,4,7,8 */
-		ac97_config |= PSC_AC97CFG_TXSLOT_ENA(7);
-		ac97_config |= PSC_AC97CFG_TXSLOT_ENA(8);
-
-	case 2:		/* stereo, slots 3,4 */
-	case 1:		/* mono */
-		ac97_config |= PSC_AC97CFG_TXSLOT_ENA(3);
-		ac97_config |= PSC_AC97CFG_TXSLOT_ENA(4);
-	}
-
-	au_writel(ac97_config, PSC_AC97CFG);
-	au_sync();
-
-	ac97_config |= PSC_AC97CFG_DE_ENABLE;
-	au_writel(ac97_config, PSC_AC97CFG);
-	au_sync();
-
-	/* Wait for Device ready.
-	*/
-	do {
-		stat = au_readl(PSC_AC97STAT);
-		au_sync();
-	} while ((stat & PSC_AC97STAT_DR) == 0);
-}
-
-static void
-set_recv_slots(int num_channels)
-{
-	u32	ac97_config, stat;
-
-	ac97_config = au_readl(PSC_AC97CFG);
-	au_sync();
-	ac97_config &= ~(PSC_AC97CFG_RXSLOT_MASK | PSC_AC97CFG_DE_ENABLE);
-	au_writel(ac97_config, PSC_AC97CFG);
-	au_sync();
-
-	/* Always enable slots 3 and 4 (stereo). Slot 6 is
-	 * optional Mic ADC, which we don't support yet.
-	 */
-	ac97_config |= PSC_AC97CFG_RXSLOT_ENA(3);
-	ac97_config |= PSC_AC97CFG_RXSLOT_ENA(4);
-
-	au_writel(ac97_config, PSC_AC97CFG);
-	au_sync();
-
-	ac97_config |= PSC_AC97CFG_DE_ENABLE;
-	au_writel(ac97_config, PSC_AC97CFG);
-	au_sync();
-
-	/* Wait for Device ready.
-	*/
-	do {
-		stat = au_readl(PSC_AC97STAT);
-		au_sync();
-	} while ((stat & PSC_AC97STAT_DR) == 0);
-}
-
-/* Hold spinlock for both start_dac() and start_adc() calls */
-static void
-start_dac(struct au1550_state *s)
-{
-	struct dmabuf  *db = &s->dma_dac;
-
-	if (!db->stopped)
-		return;
-
-	set_xmit_slots(db->num_channels);
-	au_writel(PSC_AC97PCR_TC, PSC_AC97PCR);
-	au_sync();
-	au_writel(PSC_AC97PCR_TS, PSC_AC97PCR);
-	au_sync();
-
-	au1xxx_dbdma_start(db->dmanr);
-
-	db->stopped = 0;
-}
-
-static void
-start_adc(struct au1550_state *s)
-{
-	struct dmabuf  *db = &s->dma_adc;
-	int	i;
-
-	if (!db->stopped)
-		return;
-
-	/* Put two buffers on the ring to get things started.
-	*/
-	for (i=0; i<2; i++) {
-		au1xxx_dbdma_put_dest(db->dmanr, virt_to_phys(db->nextIn),
-				db->dma_fragsize, DDMA_FLAGS_IE);
-
-		db->nextIn += db->dma_fragsize;
-		if (db->nextIn >= db->rawbuf + db->dmasize)
-			db->nextIn -= db->dmasize;
-	}
-
-	set_recv_slots(db->num_channels);
-	au1xxx_dbdma_start(db->dmanr);
-	au_writel(PSC_AC97PCR_RC, PSC_AC97PCR);
-	au_sync();
-	au_writel(PSC_AC97PCR_RS, PSC_AC97PCR);
-	au_sync();
-
-	db->stopped = 0;
-}
-
-static int
-prog_dmabuf(struct au1550_state *s, struct dmabuf *db)
-{
-	unsigned user_bytes_per_sec;
-	unsigned        bufs;
-	unsigned        rate = db->sample_rate;
-
-	if (!db->rawbuf) {
-		db->ready = db->mapped = 0;
-		db->buforder = 5;	/* 32 * PAGE_SIZE */
-		db->rawbuf = kmalloc((PAGE_SIZE << db->buforder), GFP_KERNEL);
-		if (!db->rawbuf)
-			return -ENOMEM;
-	}
-
-	db->cnt_factor = 1;
-	if (db->sample_size == 8)
-		db->cnt_factor *= 2;
-	if (db->num_channels == 1)
-		db->cnt_factor *= 2;
-	db->cnt_factor *= db->src_factor;
-
-	db->count = 0;
-	db->dma_qcount = 0;
-	db->nextIn = db->nextOut = db->rawbuf;
-
-	db->user_bytes_per_sample = (db->sample_size>>3) * db->num_channels;
-	db->dma_bytes_per_sample = 2 * ((db->num_channels == 1) ?
-					2 : db->num_channels);
-
-	user_bytes_per_sec = rate * db->user_bytes_per_sample;
-	bufs = PAGE_SIZE << db->buforder;
-	if (db->ossfragshift) {
-		if ((1000 << db->ossfragshift) < user_bytes_per_sec)
-			db->fragshift = ld2(user_bytes_per_sec/1000);
-		else
-			db->fragshift = db->ossfragshift;
-	} else {
-		db->fragshift = ld2(user_bytes_per_sec / 100 /
-				    (db->subdivision ? db->subdivision : 1));
-		if (db->fragshift < 3)
-			db->fragshift = 3;
-	}
-
-	db->fragsize = 1 << db->fragshift;
-	db->dma_fragsize = db->fragsize * db->cnt_factor;
-	db->numfrag = bufs / db->dma_fragsize;
-
-	while (db->numfrag < 4 && db->fragshift > 3) {
-		db->fragshift--;
-		db->fragsize = 1 << db->fragshift;
-		db->dma_fragsize = db->fragsize * db->cnt_factor;
-		db->numfrag = bufs / db->dma_fragsize;
-	}
-
-	if (db->ossmaxfrags >= 4 && db->ossmaxfrags < db->numfrag)
-		db->numfrag = db->ossmaxfrags;
-
-	db->dmasize = db->dma_fragsize * db->numfrag;
-	memset(db->rawbuf, 0, bufs);
-
-	pr_debug("prog_dmabuf: rate=%d, samplesize=%d, channels=%d\n",
-	    rate, db->sample_size, db->num_channels);
-	pr_debug("prog_dmabuf: fragsize=%d, cnt_factor=%d, dma_fragsize=%d\n",
-	    db->fragsize, db->cnt_factor, db->dma_fragsize);
-	pr_debug("prog_dmabuf: numfrag=%d, dmasize=%d\n", db->numfrag, db->dmasize);
-
-	db->ready = 1;
-	return 0;
-}
-
-static int
-prog_dmabuf_adc(struct au1550_state *s)
-{
-	stop_adc(s);
-	return prog_dmabuf(s, &s->dma_adc);
-
-}
-
-static int
-prog_dmabuf_dac(struct au1550_state *s)
-{
-	stop_dac(s);
-	return prog_dmabuf(s, &s->dma_dac);
-}
-
-
-static void dac_dma_interrupt(int irq, void *dev_id)
-{
-	struct au1550_state *s = (struct au1550_state *) dev_id;
-	struct dmabuf  *db = &s->dma_dac;
-	u32	ac97c_stat;
-
-	spin_lock(&s->lock);
-
-	ac97c_stat = au_readl(PSC_AC97STAT);
-	if (ac97c_stat & (AC97C_XU | AC97C_XO | AC97C_TE))
-		pr_debug("AC97C status = 0x%08x\n", ac97c_stat);
-	db->dma_qcount--;
-
-	if (db->count >= db->fragsize) {
-		if (au1xxx_dbdma_put_source(db->dmanr,
-				virt_to_phys(db->nextOut), db->fragsize,
-				DDMA_FLAGS_IE) == 0) {
-			err("qcount < 2 and no ring room!");
-		}
-		db->nextOut += db->fragsize;
-		if (db->nextOut >= db->rawbuf + db->dmasize)
-			db->nextOut -= db->dmasize;
-		db->count -= db->fragsize;
-		db->total_bytes += db->dma_fragsize;
-		db->dma_qcount++;
-	}
-
-	/* wake up anybody listening */
-	if (waitqueue_active(&db->wait))
-		wake_up(&db->wait);
-
-	spin_unlock(&s->lock);
-}
-
-
-static void adc_dma_interrupt(int irq, void *dev_id)
-{
-	struct	au1550_state *s = (struct au1550_state *)dev_id;
-	struct	dmabuf  *dp = &s->dma_adc;
-	u32	obytes;
-	char	*obuf;
-
-	spin_lock(&s->lock);
-
-	/* Pull the buffer from the dma queue.
-	*/
-	au1xxx_dbdma_get_dest(dp->dmanr, (void *)(&obuf), &obytes);
-
-	if ((dp->count + obytes) > dp->dmasize) {
-		/* Overrun. Stop ADC and log the error
-		*/
-		spin_unlock(&s->lock);
-		stop_adc(s);
-		dp->error++;
-		err("adc overrun");
-		return;
-	}
-
-	/* Put a new empty buffer on the destination DMA.
-	*/
-	au1xxx_dbdma_put_dest(dp->dmanr, virt_to_phys(dp->nextIn),
-			      dp->dma_fragsize, DDMA_FLAGS_IE);
-
-	dp->nextIn += dp->dma_fragsize;
-	if (dp->nextIn >= dp->rawbuf + dp->dmasize)
-		dp->nextIn -= dp->dmasize;
-
-	dp->count += obytes;
-	dp->total_bytes += obytes;
-
-	/* wake up anybody listening
-	*/
-	if (waitqueue_active(&dp->wait))
-		wake_up(&dp->wait);
-
-	spin_unlock(&s->lock);
-}
-
-static loff_t
-au1550_llseek(struct file *file, loff_t offset, int origin)
-{
-	return -ESPIPE;
-}
-
-
-static int
-au1550_open_mixdev(struct inode *inode, struct file *file)
-{
-	mutex_lock(&au1550_ac97_mutex);
-	file->private_data = &au1550_state;
-	mutex_unlock(&au1550_ac97_mutex);
-	return 0;
-}
-
-static int
-au1550_release_mixdev(struct inode *inode, struct file *file)
-{
-	return 0;
-}
-
-static int
-mixdev_ioctl(struct ac97_codec *codec, unsigned int cmd,
-                        unsigned long arg)
-{
-	return codec->mixer_ioctl(codec, cmd, arg);
-}
-
-static long
-au1550_ioctl_mixdev(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct au1550_state *s = file->private_data;
-	struct ac97_codec *codec = s->codec;
-	int ret;
-
-	mutex_lock(&au1550_ac97_mutex);
-	ret = mixdev_ioctl(codec, cmd, arg);
-	mutex_unlock(&au1550_ac97_mutex);
-
-	return ret;
-}
-
-static /*const */ struct file_operations au1550_mixer_fops = {
-	.owner		= THIS_MODULE,
-	.llseek		= au1550_llseek,
-	.unlocked_ioctl	= au1550_ioctl_mixdev,
-	.open		= au1550_open_mixdev,
-	.release	= au1550_release_mixdev,
-};
-
-static int
-drain_dac(struct au1550_state *s, int nonblock)
-{
-	unsigned long   flags;
-	int             count, tmo;
-
-	if (s->dma_dac.mapped || !s->dma_dac.ready || s->dma_dac.stopped)
-		return 0;
-
-	for (;;) {
-		spin_lock_irqsave(&s->lock, flags);
-		count = s->dma_dac.count;
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count <= s->dma_dac.fragsize)
-			break;
-		if (signal_pending(current))
-			break;
-		if (nonblock)
-			return -EBUSY;
-		tmo = 1000 * count / (s->no_vra ?
-				      48000 : s->dma_dac.sample_rate);
-		tmo /= s->dma_dac.dma_bytes_per_sample;
-		au1550_delay(tmo);
-	}
-	if (signal_pending(current))
-		return -ERESTARTSYS;
-	return 0;
-}
-
-static inline u8 S16_TO_U8(s16 ch)
-{
-	return (u8) (ch >> 8) + 0x80;
-}
-static inline s16 U8_TO_S16(u8 ch)
-{
-	return (s16) (ch - 0x80) << 8;
-}
-
-/*
- * Translates user samples to dma buffer suitable for AC'97 DAC data:
- *     If mono, copy left channel to right channel in dma buffer.
- *     If 8 bit samples, cvt to 16-bit before writing to dma buffer.
- *     If interpolating (no VRA), duplicate every audio frame src_factor times.
- */
-static int
-translate_from_user(struct dmabuf *db, char* dmabuf, char* userbuf,
-							       int dmacount)
-{
-	int             sample, i;
-	int             interp_bytes_per_sample;
-	int             num_samples;
-	int             mono = (db->num_channels == 1);
-	char            usersample[12];
-	s16             ch, dmasample[6];
-
-	if (db->sample_size == 16 && !mono && db->src_factor == 1) {
-		/* no translation necessary, just copy
-		*/
-		if (copy_from_user(dmabuf, userbuf, dmacount))
-			return -EFAULT;
-		return dmacount;
-	}
-
-	interp_bytes_per_sample = db->dma_bytes_per_sample * db->src_factor;
-	num_samples = dmacount / interp_bytes_per_sample;
-
-	for (sample = 0; sample < num_samples; sample++) {
-		if (copy_from_user(usersample, userbuf,
-				   db->user_bytes_per_sample)) {
-			return -EFAULT;
-		}
-
-		for (i = 0; i < db->num_channels; i++) {
-			if (db->sample_size == 8)
-				ch = U8_TO_S16(usersample[i]);
-			else
-				ch = *((s16 *) (&usersample[i * 2]));
-			dmasample[i] = ch;
-			if (mono)
-				dmasample[i + 1] = ch;	/* right channel */
-		}
-
-		/* duplicate every audio frame src_factor times
-		*/
-		for (i = 0; i < db->src_factor; i++)
-			memcpy(dmabuf, dmasample, db->dma_bytes_per_sample);
-
-		userbuf += db->user_bytes_per_sample;
-		dmabuf += interp_bytes_per_sample;
-	}
-
-	return num_samples * interp_bytes_per_sample;
-}
-
-/*
- * Translates AC'97 ADC samples to user buffer:
- *     If mono, send only left channel to user buffer.
- *     If 8 bit samples, cvt from 16 to 8 bit before writing to user buffer.
- *     If decimating (no VRA), skip over src_factor audio frames.
- */
-static int
-translate_to_user(struct dmabuf *db, char* userbuf, char* dmabuf,
-							     int dmacount)
-{
-	int             sample, i;
-	int             interp_bytes_per_sample;
-	int             num_samples;
-	int             mono = (db->num_channels == 1);
-	char            usersample[12];
-
-	if (db->sample_size == 16 && !mono && db->src_factor == 1) {
-		/* no translation necessary, just copy
-		*/
-		if (copy_to_user(userbuf, dmabuf, dmacount))
-			return -EFAULT;
-		return dmacount;
-	}
-
-	interp_bytes_per_sample = db->dma_bytes_per_sample * db->src_factor;
-	num_samples = dmacount / interp_bytes_per_sample;
-
-	for (sample = 0; sample < num_samples; sample++) {
-		for (i = 0; i < db->num_channels; i++) {
-			if (db->sample_size == 8)
-				usersample[i] =
-					S16_TO_U8(*((s16 *) (&dmabuf[i * 2])));
-			else
-				*((s16 *) (&usersample[i * 2])) =
-					*((s16 *) (&dmabuf[i * 2]));
-		}
-
-		if (copy_to_user(userbuf, usersample,
-				 db->user_bytes_per_sample)) {
-			return -EFAULT;
-		}
-
-		userbuf += db->user_bytes_per_sample;
-		dmabuf += interp_bytes_per_sample;
-	}
-
-	return num_samples * interp_bytes_per_sample;
-}
-
-/*
- * Copy audio data to/from user buffer from/to dma buffer, taking care
- * that we wrap when reading/writing the dma buffer. Returns actual byte
- * count written to or read from the dma buffer.
- */
-static int
-copy_dmabuf_user(struct dmabuf *db, char* userbuf, int count, int to_user)
-{
-	char           *bufptr = to_user ? db->nextOut : db->nextIn;
-	char           *bufend = db->rawbuf + db->dmasize;
-	int             cnt, ret;
-
-	if (bufptr + count > bufend) {
-		int             partial = (int) (bufend - bufptr);
-		if (to_user) {
-			if ((cnt = translate_to_user(db, userbuf,
-						     bufptr, partial)) < 0)
-				return cnt;
-			ret = cnt;
-			if ((cnt = translate_to_user(db, userbuf + partial,
-						     db->rawbuf,
-						     count - partial)) < 0)
-				return cnt;
-			ret += cnt;
-		} else {
-			if ((cnt = translate_from_user(db, bufptr, userbuf,
-						       partial)) < 0)
-				return cnt;
-			ret = cnt;
-			if ((cnt = translate_from_user(db, db->rawbuf,
-						       userbuf + partial,
-						       count - partial)) < 0)
-				return cnt;
-			ret += cnt;
-		}
-	} else {
-		if (to_user)
-			ret = translate_to_user(db, userbuf, bufptr, count);
-		else
-			ret = translate_from_user(db, bufptr, userbuf, count);
-	}
-
-	return ret;
-}
-
-
-static ssize_t
-au1550_read(struct file *file, char *buffer, size_t count, loff_t *ppos)
-{
-	struct au1550_state *s = file->private_data;
-	struct dmabuf  *db = &s->dma_adc;
-	DECLARE_WAITQUEUE(wait, current);
-	ssize_t         ret;
-	unsigned long   flags;
-	int             cnt, usercnt, avail;
-
-	if (db->mapped)
-		return -ENXIO;
-	if (!access_ok(VERIFY_WRITE, buffer, count))
-		return -EFAULT;
-	ret = 0;
-
-	count *= db->cnt_factor;
-
-	mutex_lock(&s->sem);
-	add_wait_queue(&db->wait, &wait);
-
-	while (count > 0) {
-		/* wait for samples in ADC dma buffer
-		*/
-		do {
-			spin_lock_irqsave(&s->lock, flags);
-			if (db->stopped)
-				start_adc(s);
-			avail = db->count;
-			if (avail <= 0)
-				__set_current_state(TASK_INTERRUPTIBLE);
-			spin_unlock_irqrestore(&s->lock, flags);
-			if (avail <= 0) {
-				if (file->f_flags & O_NONBLOCK) {
-					if (!ret)
-						ret = -EAGAIN;
-					goto out;
-				}
-				mutex_unlock(&s->sem);
-				schedule();
-				if (signal_pending(current)) {
-					if (!ret)
-						ret = -ERESTARTSYS;
-					goto out2;
-				}
-				mutex_lock(&s->sem);
-			}
-		} while (avail <= 0);
-
-		/* copy from nextOut to user
-		*/
-		if ((cnt = copy_dmabuf_user(db, buffer,
-					    count > avail ?
-					    avail : count, 1)) < 0) {
-			if (!ret)
-				ret = -EFAULT;
-			goto out;
-		}
-
-		spin_lock_irqsave(&s->lock, flags);
-		db->count -= cnt;
-		db->nextOut += cnt;
-		if (db->nextOut >= db->rawbuf + db->dmasize)
-			db->nextOut -= db->dmasize;
-		spin_unlock_irqrestore(&s->lock, flags);
-
-		count -= cnt;
-		usercnt = cnt / db->cnt_factor;
-		buffer += usercnt;
-		ret += usercnt;
-	}			/* while (count > 0) */
-
-out:
-	mutex_unlock(&s->sem);
-out2:
-	remove_wait_queue(&db->wait, &wait);
-	set_current_state(TASK_RUNNING);
-	return ret;
-}
-
-static ssize_t
-au1550_write(struct file *file, const char *buffer, size_t count, loff_t * ppos)
-{
-	struct au1550_state *s = file->private_data;
-	struct dmabuf  *db = &s->dma_dac;
-	DECLARE_WAITQUEUE(wait, current);
-	ssize_t         ret = 0;
-	unsigned long   flags;
-	int             cnt, usercnt, avail;
-
-	pr_debug("write: count=%d\n", count);
-
-	if (db->mapped)
-		return -ENXIO;
-	if (!access_ok(VERIFY_READ, buffer, count))
-		return -EFAULT;
-
-	count *= db->cnt_factor;
-
-	mutex_lock(&s->sem);
-	add_wait_queue(&db->wait, &wait);
-
-	while (count > 0) {
-		/* wait for space in playback buffer
-		*/
-		do {
-			spin_lock_irqsave(&s->lock, flags);
-			avail = (int) db->dmasize - db->count;
-			if (avail <= 0)
-				__set_current_state(TASK_INTERRUPTIBLE);
-			spin_unlock_irqrestore(&s->lock, flags);
-			if (avail <= 0) {
-				if (file->f_flags & O_NONBLOCK) {
-					if (!ret)
-						ret = -EAGAIN;
-					goto out;
-				}
-				mutex_unlock(&s->sem);
-				schedule();
-				if (signal_pending(current)) {
-					if (!ret)
-						ret = -ERESTARTSYS;
-					goto out2;
-				}
-				mutex_lock(&s->sem);
-			}
-		} while (avail <= 0);
-
-		/* copy from user to nextIn
-		*/
-		if ((cnt = copy_dmabuf_user(db, (char *) buffer,
-					    count > avail ?
-					    avail : count, 0)) < 0) {
-			if (!ret)
-				ret = -EFAULT;
-			goto out;
-		}
-
-		spin_lock_irqsave(&s->lock, flags);
-		db->count += cnt;
-		db->nextIn += cnt;
-		if (db->nextIn >= db->rawbuf + db->dmasize)
-			db->nextIn -= db->dmasize;
-
-		/* If the data is available, we want to keep two buffers
-		 * on the dma queue.  If the queue count reaches zero,
-		 * we know the dma has stopped.
-		 */
-		while ((db->dma_qcount < 2) && (db->count >= db->fragsize)) {
-			if (au1xxx_dbdma_put_source(db->dmanr,
-				virt_to_phys(db->nextOut), db->fragsize,
-				DDMA_FLAGS_IE) == 0) {
-				err("qcount < 2 and no ring room!");
-			}
-			db->nextOut += db->fragsize;
-			if (db->nextOut >= db->rawbuf + db->dmasize)
-				db->nextOut -= db->dmasize;
-			db->total_bytes += db->dma_fragsize;
-			if (db->dma_qcount == 0)
-				start_dac(s);
-			db->dma_qcount++;
-		}
-		spin_unlock_irqrestore(&s->lock, flags);
-
-		count -= cnt;
-		usercnt = cnt / db->cnt_factor;
-		buffer += usercnt;
-		ret += usercnt;
-	}			/* while (count > 0) */
-
-out:
-	mutex_unlock(&s->sem);
-out2:
-	remove_wait_queue(&db->wait, &wait);
-	set_current_state(TASK_RUNNING);
-	return ret;
-}
-
-
-/* No kernel lock - we have our own spinlock */
-static unsigned int
-au1550_poll(struct file *file, struct poll_table_struct *wait)
-{
-	struct au1550_state *s = file->private_data;
-	unsigned long   flags;
-	unsigned int    mask = 0;
-
-	if (file->f_mode & FMODE_WRITE) {
-		if (!s->dma_dac.ready)
-			return 0;
-		poll_wait(file, &s->dma_dac.wait, wait);
-	}
-	if (file->f_mode & FMODE_READ) {
-		if (!s->dma_adc.ready)
-			return 0;
-		poll_wait(file, &s->dma_adc.wait, wait);
-	}
-
-	spin_lock_irqsave(&s->lock, flags);
-
-	if (file->f_mode & FMODE_READ) {
-		if (s->dma_adc.count >= (signed)s->dma_adc.dma_fragsize)
-			mask |= POLLIN | POLLRDNORM;
-	}
-	if (file->f_mode & FMODE_WRITE) {
-		if (s->dma_dac.mapped) {
-			if (s->dma_dac.count >=
-			    (signed)s->dma_dac.dma_fragsize)
-				mask |= POLLOUT | POLLWRNORM;
-		} else {
-			if ((signed) s->dma_dac.dmasize >=
-			    s->dma_dac.count + (signed)s->dma_dac.dma_fragsize)
-				mask |= POLLOUT | POLLWRNORM;
-		}
-	}
-	spin_unlock_irqrestore(&s->lock, flags);
-	return mask;
-}
-
-static int
-au1550_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	struct au1550_state *s = file->private_data;
-	struct dmabuf  *db;
-	unsigned long   size;
-	int ret = 0;
-
-	mutex_lock(&au1550_ac97_mutex);
-	mutex_lock(&s->sem);
-	if (vma->vm_flags & VM_WRITE)
-		db = &s->dma_dac;
-	else if (vma->vm_flags & VM_READ)
-		db = &s->dma_adc;
-	else {
-		ret = -EINVAL;
-		goto out;
-	}
-	if (vma->vm_pgoff != 0) {
-		ret = -EINVAL;
-		goto out;
-	}
-	size = vma->vm_end - vma->vm_start;
-	if (size > (PAGE_SIZE << db->buforder)) {
-		ret = -EINVAL;
-		goto out;
-	}
-	if (remap_pfn_range(vma, vma->vm_start, page_to_pfn(virt_to_page(db->rawbuf)),
-			     size, vma->vm_page_prot)) {
-		ret = -EAGAIN;
-		goto out;
-	}
-	vma->vm_flags &= ~VM_IO;
-	db->mapped = 1;
-out:
-	mutex_unlock(&s->sem);
-	mutex_unlock(&au1550_ac97_mutex);
-	return ret;
-}
-
-#ifdef DEBUG
-static struct ioctl_str_t {
-	unsigned int    cmd;
-	const char     *str;
-} ioctl_str[] = {
-	{SNDCTL_DSP_RESET, "SNDCTL_DSP_RESET"},
-	{SNDCTL_DSP_SYNC, "SNDCTL_DSP_SYNC"},
-	{SNDCTL_DSP_SPEED, "SNDCTL_DSP_SPEED"},
-	{SNDCTL_DSP_STEREO, "SNDCTL_DSP_STEREO"},
-	{SNDCTL_DSP_GETBLKSIZE, "SNDCTL_DSP_GETBLKSIZE"},
-	{SNDCTL_DSP_SAMPLESIZE, "SNDCTL_DSP_SAMPLESIZE"},
-	{SNDCTL_DSP_CHANNELS, "SNDCTL_DSP_CHANNELS"},
-	{SOUND_PCM_WRITE_CHANNELS, "SOUND_PCM_WRITE_CHANNELS"},
-	{SOUND_PCM_WRITE_FILTER, "SOUND_PCM_WRITE_FILTER"},
-	{SNDCTL_DSP_POST, "SNDCTL_DSP_POST"},
-	{SNDCTL_DSP_SUBDIVIDE, "SNDCTL_DSP_SUBDIVIDE"},
-	{SNDCTL_DSP_SETFRAGMENT, "SNDCTL_DSP_SETFRAGMENT"},
-	{SNDCTL_DSP_GETFMTS, "SNDCTL_DSP_GETFMTS"},
-	{SNDCTL_DSP_SETFMT, "SNDCTL_DSP_SETFMT"},
-	{SNDCTL_DSP_GETOSPACE, "SNDCTL_DSP_GETOSPACE"},
-	{SNDCTL_DSP_GETISPACE, "SNDCTL_DSP_GETISPACE"},
-	{SNDCTL_DSP_NONBLOCK, "SNDCTL_DSP_NONBLOCK"},
-	{SNDCTL_DSP_GETCAPS, "SNDCTL_DSP_GETCAPS"},
-	{SNDCTL_DSP_GETTRIGGER, "SNDCTL_DSP_GETTRIGGER"},
-	{SNDCTL_DSP_SETTRIGGER, "SNDCTL_DSP_SETTRIGGER"},
-	{SNDCTL_DSP_GETIPTR, "SNDCTL_DSP_GETIPTR"},
-	{SNDCTL_DSP_GETOPTR, "SNDCTL_DSP_GETOPTR"},
-	{SNDCTL_DSP_MAPINBUF, "SNDCTL_DSP_MAPINBUF"},
-	{SNDCTL_DSP_MAPOUTBUF, "SNDCTL_DSP_MAPOUTBUF"},
-	{SNDCTL_DSP_SETSYNCRO, "SNDCTL_DSP_SETSYNCRO"},
-	{SNDCTL_DSP_SETDUPLEX, "SNDCTL_DSP_SETDUPLEX"},
-	{SNDCTL_DSP_GETODELAY, "SNDCTL_DSP_GETODELAY"},
-	{SNDCTL_DSP_GETCHANNELMASK, "SNDCTL_DSP_GETCHANNELMASK"},
-	{SNDCTL_DSP_BIND_CHANNEL, "SNDCTL_DSP_BIND_CHANNEL"},
-	{OSS_GETVERSION, "OSS_GETVERSION"},
-	{SOUND_PCM_READ_RATE, "SOUND_PCM_READ_RATE"},
-	{SOUND_PCM_READ_CHANNELS, "SOUND_PCM_READ_CHANNELS"},
-	{SOUND_PCM_READ_BITS, "SOUND_PCM_READ_BITS"},
-	{SOUND_PCM_READ_FILTER, "SOUND_PCM_READ_FILTER"}
-};
-#endif
-
-static int
-dma_count_done(struct dmabuf *db)
-{
-	if (db->stopped)
-		return 0;
-
-	return db->dma_fragsize - au1xxx_get_dma_residue(db->dmanr);
-}
-
-
-static int
-au1550_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct au1550_state *s = file->private_data;
-	unsigned long   flags;
-	audio_buf_info  abinfo;
-	count_info      cinfo;
-	int             count;
-	int             val, mapped, ret, diff;
-
-	mapped = ((file->f_mode & FMODE_WRITE) && s->dma_dac.mapped) ||
-		((file->f_mode & FMODE_READ) && s->dma_adc.mapped);
-
-#ifdef DEBUG
-	for (count = 0; count < ARRAY_SIZE(ioctl_str); count++) {
-		if (ioctl_str[count].cmd == cmd)
-			break;
-	}
-	if (count < ARRAY_SIZE(ioctl_str))
-		pr_debug("ioctl %s, arg=0x%lxn", ioctl_str[count].str, arg);
-	else
-		pr_debug("ioctl 0x%x unknown, arg=0x%lx\n", cmd, arg);
-#endif
-
-	switch (cmd) {
-	case OSS_GETVERSION:
-		return put_user(SOUND_VERSION, (int *) arg);
-
-	case SNDCTL_DSP_SYNC:
-		if (file->f_mode & FMODE_WRITE)
-			return drain_dac(s, file->f_flags & O_NONBLOCK);
-		return 0;
-
-	case SNDCTL_DSP_SETDUPLEX:
-		return 0;
-
-	case SNDCTL_DSP_GETCAPS:
-		return put_user(DSP_CAP_DUPLEX | DSP_CAP_REALTIME |
-				DSP_CAP_TRIGGER | DSP_CAP_MMAP, (int *)arg);
-
-	case SNDCTL_DSP_RESET:
-		if (file->f_mode & FMODE_WRITE) {
-			stop_dac(s);
-			synchronize_irq();
-			s->dma_dac.count = s->dma_dac.total_bytes = 0;
-			s->dma_dac.nextIn = s->dma_dac.nextOut =
-				s->dma_dac.rawbuf;
-		}
-		if (file->f_mode & FMODE_READ) {
-			stop_adc(s);
-			synchronize_irq();
-			s->dma_adc.count = s->dma_adc.total_bytes = 0;
-			s->dma_adc.nextIn = s->dma_adc.nextOut =
-				s->dma_adc.rawbuf;
-		}
-		return 0;
-
-	case SNDCTL_DSP_SPEED:
-		if (get_user(val, (int *) arg))
-			return -EFAULT;
-		if (val >= 0) {
-			if (file->f_mode & FMODE_READ) {
-				stop_adc(s);
-				set_adc_rate(s, val);
-			}
-			if (file->f_mode & FMODE_WRITE) {
-				stop_dac(s);
-				set_dac_rate(s, val);
-			}
-			if (s->open_mode & FMODE_READ)
-				if ((ret = prog_dmabuf_adc(s)))
-					return ret;
-			if (s->open_mode & FMODE_WRITE)
-				if ((ret = prog_dmabuf_dac(s)))
-					return ret;
-		}
-		return put_user((file->f_mode & FMODE_READ) ?
-				s->dma_adc.sample_rate :
-				s->dma_dac.sample_rate,
-				(int *)arg);
-
-	case SNDCTL_DSP_STEREO:
-		if (get_user(val, (int *) arg))
-			return -EFAULT;
-		if (file->f_mode & FMODE_READ) {
-			stop_adc(s);
-			s->dma_adc.num_channels = val ? 2 : 1;
-			if ((ret = prog_dmabuf_adc(s)))
-				return ret;
-		}
-		if (file->f_mode & FMODE_WRITE) {
-			stop_dac(s);
-			s->dma_dac.num_channels = val ? 2 : 1;
-			if (s->codec_ext_caps & AC97_EXT_DACS) {
-				/* disable surround and center/lfe in AC'97
-				*/
-				u16 ext_stat = rdcodec(s->codec,
-						       AC97_EXTENDED_STATUS);
-				wrcodec(s->codec, AC97_EXTENDED_STATUS,
-					ext_stat | (AC97_EXTSTAT_PRI |
-						    AC97_EXTSTAT_PRJ |
-						    AC97_EXTSTAT_PRK));
-			}
-			if ((ret = prog_dmabuf_dac(s)))
-				return ret;
-		}
-		return 0;
-
-	case SNDCTL_DSP_CHANNELS:
-		if (get_user(val, (int *) arg))
-			return -EFAULT;
-		if (val != 0) {
-			if (file->f_mode & FMODE_READ) {
-				if (val < 0 || val > 2)
-					return -EINVAL;
-				stop_adc(s);
-				s->dma_adc.num_channels = val;
-				if ((ret = prog_dmabuf_adc(s)))
-					return ret;
-			}
-			if (file->f_mode & FMODE_WRITE) {
-				switch (val) {
-				case 1:
-				case 2:
-					break;
-				case 3:
-				case 5:
-					return -EINVAL;
-				case 4:
-					if (!(s->codec_ext_caps &
-					      AC97_EXTID_SDAC))
-						return -EINVAL;
-					break;
-				case 6:
-					if ((s->codec_ext_caps &
-					     AC97_EXT_DACS) != AC97_EXT_DACS)
-						return -EINVAL;
-					break;
-				default:
-					return -EINVAL;
-				}
-
-				stop_dac(s);
-				if (val <= 2 &&
-				    (s->codec_ext_caps & AC97_EXT_DACS)) {
-					/* disable surround and center/lfe
-					 * channels in AC'97
-					 */
-					u16             ext_stat =
-						rdcodec(s->codec,
-							AC97_EXTENDED_STATUS);
-					wrcodec(s->codec,
-						AC97_EXTENDED_STATUS,
-						ext_stat | (AC97_EXTSTAT_PRI |
-							    AC97_EXTSTAT_PRJ |
-							    AC97_EXTSTAT_PRK));
-				} else if (val >= 4) {
-					/* enable surround, center/lfe
-					 * channels in AC'97
-					 */
-					u16             ext_stat =
-						rdcodec(s->codec,
-							AC97_EXTENDED_STATUS);
-					ext_stat &= ~AC97_EXTSTAT_PRJ;
-					if (val == 6)
-						ext_stat &=
-							~(AC97_EXTSTAT_PRI |
-							  AC97_EXTSTAT_PRK);
-					wrcodec(s->codec,
-						AC97_EXTENDED_STATUS,
-						ext_stat);
-				}
-
-				s->dma_dac.num_channels = val;
-				if ((ret = prog_dmabuf_dac(s)))
-					return ret;
-			}
-		}
-		return put_user(val, (int *) arg);
-
-	case SNDCTL_DSP_GETFMTS:	/* Returns a mask */
-		return put_user(AFMT_S16_LE | AFMT_U8, (int *) arg);
-
-	case SNDCTL_DSP_SETFMT:	/* Selects ONE fmt */
-		if (get_user(val, (int *) arg))
-			return -EFAULT;
-		if (val != AFMT_QUERY) {
-			if (file->f_mode & FMODE_READ) {
-				stop_adc(s);
-				if (val == AFMT_S16_LE)
-					s->dma_adc.sample_size = 16;
-				else {
-					val = AFMT_U8;
-					s->dma_adc.sample_size = 8;
-				}
-				if ((ret = prog_dmabuf_adc(s)))
-					return ret;
-			}
-			if (file->f_mode & FMODE_WRITE) {
-				stop_dac(s);
-				if (val == AFMT_S16_LE)
-					s->dma_dac.sample_size = 16;
-				else {
-					val = AFMT_U8;
-					s->dma_dac.sample_size = 8;
-				}
-				if ((ret = prog_dmabuf_dac(s)))
-					return ret;
-			}
-		} else {
-			if (file->f_mode & FMODE_READ)
-				val = (s->dma_adc.sample_size == 16) ?
-					AFMT_S16_LE : AFMT_U8;
-			else
-				val = (s->dma_dac.sample_size == 16) ?
-					AFMT_S16_LE : AFMT_U8;
-		}
-		return put_user(val, (int *) arg);
-
-	case SNDCTL_DSP_POST:
-		return 0;
-
-	case SNDCTL_DSP_GETTRIGGER:
-		val = 0;
-		spin_lock_irqsave(&s->lock, flags);
-		if (file->f_mode & FMODE_READ && !s->dma_adc.stopped)
-			val |= PCM_ENABLE_INPUT;
-		if (file->f_mode & FMODE_WRITE && !s->dma_dac.stopped)
-			val |= PCM_ENABLE_OUTPUT;
-		spin_unlock_irqrestore(&s->lock, flags);
-		return put_user(val, (int *) arg);
-
-	case SNDCTL_DSP_SETTRIGGER:
-		if (get_user(val, (int *) arg))
-			return -EFAULT;
-		if (file->f_mode & FMODE_READ) {
-			if (val & PCM_ENABLE_INPUT) {
-				spin_lock_irqsave(&s->lock, flags);
-				start_adc(s);
-				spin_unlock_irqrestore(&s->lock, flags);
-			} else
-				stop_adc(s);
-		}
-		if (file->f_mode & FMODE_WRITE) {
-			if (val & PCM_ENABLE_OUTPUT) {
-				spin_lock_irqsave(&s->lock, flags);
-				start_dac(s);
-				spin_unlock_irqrestore(&s->lock, flags);
-			} else
-				stop_dac(s);
-		}
-		return 0;
-
-	case SNDCTL_DSP_GETOSPACE:
-		if (!(file->f_mode & FMODE_WRITE))
-			return -EINVAL;
-		abinfo.fragsize = s->dma_dac.fragsize;
-		spin_lock_irqsave(&s->lock, flags);
-		count = s->dma_dac.count;
-		count -= dma_count_done(&s->dma_dac);
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		abinfo.bytes = (s->dma_dac.dmasize - count) /
-			s->dma_dac.cnt_factor;
-		abinfo.fragstotal = s->dma_dac.numfrag;
-		abinfo.fragments = abinfo.bytes >> s->dma_dac.fragshift;
-		pr_debug("ioctl SNDCTL_DSP_GETOSPACE: bytes=%d, fragments=%d\n", abinfo.bytes, abinfo.fragments);
-		return copy_to_user((void *) arg, &abinfo,
-				    sizeof(abinfo)) ? -EFAULT : 0;
-
-	case SNDCTL_DSP_GETISPACE:
-		if (!(file->f_mode & FMODE_READ))
-			return -EINVAL;
-		abinfo.fragsize = s->dma_adc.fragsize;
-		spin_lock_irqsave(&s->lock, flags);
-		count = s->dma_adc.count;
-		count += dma_count_done(&s->dma_adc);
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		abinfo.bytes = count / s->dma_adc.cnt_factor;
-		abinfo.fragstotal = s->dma_adc.numfrag;
-		abinfo.fragments = abinfo.bytes >> s->dma_adc.fragshift;
-		return copy_to_user((void *) arg, &abinfo,
-				    sizeof(abinfo)) ? -EFAULT : 0;
-
-	case SNDCTL_DSP_NONBLOCK:
-		spin_lock(&file->f_lock);
-		file->f_flags |= O_NONBLOCK;
-		spin_unlock(&file->f_lock);
-		return 0;
-
-	case SNDCTL_DSP_GETODELAY:
-		if (!(file->f_mode & FMODE_WRITE))
-			return -EINVAL;
-		spin_lock_irqsave(&s->lock, flags);
-		count = s->dma_dac.count;
-		count -= dma_count_done(&s->dma_dac);
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		count /= s->dma_dac.cnt_factor;
-		return put_user(count, (int *) arg);
-
-	case SNDCTL_DSP_GETIPTR:
-		if (!(file->f_mode & FMODE_READ))
-			return -EINVAL;
-		spin_lock_irqsave(&s->lock, flags);
-		cinfo.bytes = s->dma_adc.total_bytes;
-		count = s->dma_adc.count;
-		if (!s->dma_adc.stopped) {
-			diff = dma_count_done(&s->dma_adc);
-			count += diff;
-			cinfo.bytes += diff;
-			cinfo.ptr =  virt_to_phys(s->dma_adc.nextIn) + diff -
-				virt_to_phys(s->dma_adc.rawbuf);
-		} else
-			cinfo.ptr = virt_to_phys(s->dma_adc.nextIn) -
-				virt_to_phys(s->dma_adc.rawbuf);
-		if (s->dma_adc.mapped)
-			s->dma_adc.count &= (s->dma_adc.dma_fragsize-1);
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		cinfo.blocks = count >> s->dma_adc.fragshift;
-		return copy_to_user((void *) arg, &cinfo, sizeof(cinfo));
-
-	case SNDCTL_DSP_GETOPTR:
-		if (!(file->f_mode & FMODE_READ))
-			return -EINVAL;
-		spin_lock_irqsave(&s->lock, flags);
-		cinfo.bytes = s->dma_dac.total_bytes;
-		count = s->dma_dac.count;
-		if (!s->dma_dac.stopped) {
-			diff = dma_count_done(&s->dma_dac);
-			count -= diff;
-			cinfo.bytes += diff;
-			cinfo.ptr = virt_to_phys(s->dma_dac.nextOut) + diff -
-				virt_to_phys(s->dma_dac.rawbuf);
-		} else
-			cinfo.ptr = virt_to_phys(s->dma_dac.nextOut) -
-				virt_to_phys(s->dma_dac.rawbuf);
-		if (s->dma_dac.mapped)
-			s->dma_dac.count &= (s->dma_dac.dma_fragsize-1);
-		spin_unlock_irqrestore(&s->lock, flags);
-		if (count < 0)
-			count = 0;
-		cinfo.blocks = count >> s->dma_dac.fragshift;
-		return copy_to_user((void *) arg, &cinfo, sizeof(cinfo));
-
-	case SNDCTL_DSP_GETBLKSIZE:
-		if (file->f_mode & FMODE_WRITE)
-			return put_user(s->dma_dac.fragsize, (int *) arg);
-		else
-			return put_user(s->dma_adc.fragsize, (int *) arg);
-
-	case SNDCTL_DSP_SETFRAGMENT:
-		if (get_user(val, (int *) arg))
-			return -EFAULT;
-		if (file->f_mode & FMODE_READ) {
-			stop_adc(s);
-			s->dma_adc.ossfragshift = val & 0xffff;
-			s->dma_adc.ossmaxfrags = (val >> 16) & 0xffff;
-			if (s->dma_adc.ossfragshift < 4)
-				s->dma_adc.ossfragshift = 4;
-			if (s->dma_adc.ossfragshift > 15)
-				s->dma_adc.ossfragshift = 15;
-			if (s->dma_adc.ossmaxfrags < 4)
-				s->dma_adc.ossmaxfrags = 4;
-			if ((ret = prog_dmabuf_adc(s)))
-				return ret;
-		}
-		if (file->f_mode & FMODE_WRITE) {
-			stop_dac(s);
-			s->dma_dac.ossfragshift = val & 0xffff;
-			s->dma_dac.ossmaxfrags = (val >> 16) & 0xffff;
-			if (s->dma_dac.ossfragshift < 4)
-				s->dma_dac.ossfragshift = 4;
-			if (s->dma_dac.ossfragshift > 15)
-				s->dma_dac.ossfragshift = 15;
-			if (s->dma_dac.ossmaxfrags < 4)
-				s->dma_dac.ossmaxfrags = 4;
-			if ((ret = prog_dmabuf_dac(s)))
-				return ret;
-		}
-		return 0;
-
-	case SNDCTL_DSP_SUBDIVIDE:
-		if ((file->f_mode & FMODE_READ && s->dma_adc.subdivision) ||
-		    (file->f_mode & FMODE_WRITE && s->dma_dac.subdivision))
-			return -EINVAL;
-		if (get_user(val, (int *) arg))
-			return -EFAULT;
-		if (val != 1 && val != 2 && val != 4)
-			return -EINVAL;
-		if (file->f_mode & FMODE_READ) {
-			stop_adc(s);
-			s->dma_adc.subdivision = val;
-			if ((ret = prog_dmabuf_adc(s)))
-				return ret;
-		}
-		if (file->f_mode & FMODE_WRITE) {
-			stop_dac(s);
-			s->dma_dac.subdivision = val;
-			if ((ret = prog_dmabuf_dac(s)))
-				return ret;
-		}
-		return 0;
-
-	case SOUND_PCM_READ_RATE:
-		return put_user((file->f_mode & FMODE_READ) ?
-				s->dma_adc.sample_rate :
-				s->dma_dac.sample_rate,
-				(int *)arg);
-
-	case SOUND_PCM_READ_CHANNELS:
-		if (file->f_mode & FMODE_READ)
-			return put_user(s->dma_adc.num_channels, (int *)arg);
-		else
-			return put_user(s->dma_dac.num_channels, (int *)arg);
-
-	case SOUND_PCM_READ_BITS:
-		if (file->f_mode & FMODE_READ)
-			return put_user(s->dma_adc.sample_size, (int *)arg);
-		else
-			return put_user(s->dma_dac.sample_size, (int *)arg);
-
-	case SOUND_PCM_WRITE_FILTER:
-	case SNDCTL_DSP_SETSYNCRO:
-	case SOUND_PCM_READ_FILTER:
-		return -EINVAL;
-	}
-
-	return mixdev_ioctl(s->codec, cmd, arg);
-}
-
-static long
-au1550_unlocked_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	int ret;
-
-	mutex_lock(&au1550_ac97_mutex);
-	ret = au1550_ioctl(file, cmd, arg);
-	mutex_unlock(&au1550_ac97_mutex);
-
-	return ret;
-}
-
-static int
-au1550_open(struct inode *inode, struct file *file)
-{
-	int             minor = MINOR(inode->i_rdev);
-	DECLARE_WAITQUEUE(wait, current);
-	struct au1550_state *s = &au1550_state;
-	int             ret;
-
-#ifdef DEBUG
-	if (file->f_flags & O_NONBLOCK)
-		pr_debug("open: non-blocking\n");
-	else
-		pr_debug("open: blocking\n");
-#endif
-
-	file->private_data = s;
-	mutex_lock(&au1550_ac97_mutex);
-	/* wait for device to become free */
-	mutex_lock(&s->open_mutex);
-	while (s->open_mode & file->f_mode) {
-		ret = -EBUSY;
-		if (file->f_flags & O_NONBLOCK)
-			goto out;
-		add_wait_queue(&s->open_wait, &wait);
-		__set_current_state(TASK_INTERRUPTIBLE);
-		mutex_unlock(&s->open_mutex);
-		schedule();
-		remove_wait_queue(&s->open_wait, &wait);
-		set_current_state(TASK_RUNNING);
-		ret = -ERESTARTSYS;
-		if (signal_pending(current))
-			goto out2;
-		mutex_lock(&s->open_mutex);
-	}
-
-	stop_dac(s);
-	stop_adc(s);
-
-	if (file->f_mode & FMODE_READ) {
-		s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags =
-			s->dma_adc.subdivision = s->dma_adc.total_bytes = 0;
-		s->dma_adc.num_channels = 1;
-		s->dma_adc.sample_size = 8;
-		set_adc_rate(s, 8000);
-		if ((minor & 0xf) == SND_DEV_DSP16)
-			s->dma_adc.sample_size = 16;
-	}
-
-	if (file->f_mode & FMODE_WRITE) {
-		s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags =
-			s->dma_dac.subdivision = s->dma_dac.total_bytes = 0;
-		s->dma_dac.num_channels = 1;
-		s->dma_dac.sample_size = 8;
-		set_dac_rate(s, 8000);
-		if ((minor & 0xf) == SND_DEV_DSP16)
-			s->dma_dac.sample_size = 16;
-	}
-
-	if (file->f_mode & FMODE_READ) {
-		if ((ret = prog_dmabuf_adc(s)))
-			goto out;
-	}
-	if (file->f_mode & FMODE_WRITE) {
-		if ((ret = prog_dmabuf_dac(s)))
-			goto out;
-	}
-
-	s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
-	mutex_init(&s->sem);
-	ret = 0;
-out:
-	mutex_unlock(&s->open_mutex);
-out2:
-	mutex_unlock(&au1550_ac97_mutex);
-	return ret;
-}
-
-static int
-au1550_release(struct inode *inode, struct file *file)
-{
-	struct au1550_state *s = file->private_data;
-
-	mutex_lock(&au1550_ac97_mutex);
-
-	if (file->f_mode & FMODE_WRITE) {
-		mutex_unlock(&au1550_ac97_mutex);
-		drain_dac(s, file->f_flags & O_NONBLOCK);
-		mutex_lock(&au1550_ac97_mutex);
-	}
-
-	mutex_lock(&s->open_mutex);
-	if (file->f_mode & FMODE_WRITE) {
-		stop_dac(s);
-		kfree(s->dma_dac.rawbuf);
-		s->dma_dac.rawbuf = NULL;
-	}
-	if (file->f_mode & FMODE_READ) {
-		stop_adc(s);
-		kfree(s->dma_adc.rawbuf);
-		s->dma_adc.rawbuf = NULL;
-	}
-	s->open_mode &= ((~file->f_mode) & (FMODE_READ|FMODE_WRITE));
-	mutex_unlock(&s->open_mutex);
-	wake_up(&s->open_wait);
-	mutex_unlock(&au1550_ac97_mutex);
-	return 0;
-}
-
-static /*const */ struct file_operations au1550_audio_fops = {
-	.owner		= THIS_MODULE,
-	.llseek		= au1550_llseek,
-	.read		= au1550_read,
-	.write		= au1550_write,
-	.poll		= au1550_poll,
-	.unlocked_ioctl	= au1550_unlocked_ioctl,
-	.mmap		= au1550_mmap,
-	.open		= au1550_open,
-	.release	= au1550_release,
-};
-
-MODULE_AUTHOR("Advanced Micro Devices (AMD), dan@embeddededge.com");
-MODULE_DESCRIPTION("Au1550 AC97 Audio Driver");
-MODULE_LICENSE("GPL");
-
-
-static int __devinit
-au1550_probe(void)
-{
-	struct au1550_state *s = &au1550_state;
-	int             val;
-
-	memset(s, 0, sizeof(struct au1550_state));
-
-	init_waitqueue_head(&s->dma_adc.wait);
-	init_waitqueue_head(&s->dma_dac.wait);
-	init_waitqueue_head(&s->open_wait);
-	mutex_init(&s->open_mutex);
-	spin_lock_init(&s->lock);
-
-	s->codec = ac97_alloc_codec();
-	if(s->codec == NULL) {
-		err("Out of memory");
-		return -1;
-	}
-	s->codec->private_data = s;
-	s->codec->id = 0;
-	s->codec->codec_read = rdcodec;
-	s->codec->codec_write = wrcodec;
-	s->codec->codec_wait = waitcodec;
-
-	if (!request_mem_region(CPHYSADDR(AC97_PSC_SEL),
-			    0x30, "Au1550 AC97")) {
-		err("AC'97 ports in use");
-	}
-
-	/* Allocate the DMA Channels
-	*/
-	if ((s->dma_dac.dmanr = au1xxx_dbdma_chan_alloc(DBDMA_MEM_CHAN,
-	    DBDMA_AC97_TX_CHAN, dac_dma_interrupt, (void *)s)) == 0) {
-		err("Can't get DAC DMA");
-		goto err_dma1;
-	}
-	au1xxx_dbdma_set_devwidth(s->dma_dac.dmanr, 16);
-	if (au1xxx_dbdma_ring_alloc(s->dma_dac.dmanr,
-					NUM_DBDMA_DESCRIPTORS) == 0) {
-		err("Can't get DAC DMA descriptors");
-		goto err_dma1;
-	}
-
-	if ((s->dma_adc.dmanr = au1xxx_dbdma_chan_alloc(DBDMA_AC97_RX_CHAN,
-	    DBDMA_MEM_CHAN, adc_dma_interrupt, (void *)s)) == 0) {
-		err("Can't get ADC DMA");
-		goto err_dma2;
-	}
-	au1xxx_dbdma_set_devwidth(s->dma_adc.dmanr, 16);
-	if (au1xxx_dbdma_ring_alloc(s->dma_adc.dmanr,
-					NUM_DBDMA_DESCRIPTORS) == 0) {
-		err("Can't get ADC DMA descriptors");
-		goto err_dma2;
-	}
-
-	pr_info("DAC: DMA%d, ADC: DMA%d", DBDMA_AC97_TX_CHAN, DBDMA_AC97_RX_CHAN);
-
-	/* register devices */
-
-	if ((s->dev_audio = register_sound_dsp(&au1550_audio_fops, -1)) < 0)
-		goto err_dev1;
-	if ((s->codec->dev_mixer =
-	     register_sound_mixer(&au1550_mixer_fops, -1)) < 0)
-		goto err_dev2;
-
-	/* The GPIO for the appropriate PSC was configured by the
-	 * board specific start up.
-	 *
-	 * configure PSC for AC'97
-	 */
-	au_writel(0, AC97_PSC_CTRL);	/* Disable PSC */
-	au_sync();
-	au_writel((PSC_SEL_CLK_SERCLK | PSC_SEL_PS_AC97MODE), AC97_PSC_SEL);
-	au_sync();
-
-	/* cold reset the AC'97
-	*/
-	au_writel(PSC_AC97RST_RST, PSC_AC97RST);
-	au_sync();
-	au1550_delay(10);
-	au_writel(0, PSC_AC97RST);
-	au_sync();
-
-	/* need to delay around 500msec(bleech) to give
-	   some CODECs enough time to wakeup */
-	au1550_delay(500);
-
-	/* warm reset the AC'97 to start the bitclk
-	*/
-	au_writel(PSC_AC97RST_SNC, PSC_AC97RST);
-	au_sync();
-	udelay(100);
-	au_writel(0, PSC_AC97RST);
-	au_sync();
-
-	/* Enable PSC
-	*/
-	au_writel(PSC_CTRL_ENABLE, AC97_PSC_CTRL);
-	au_sync();
-
-	/* Wait for PSC ready.
-	*/
-	do {
-		val = au_readl(PSC_AC97STAT);
-		au_sync();
-	} while ((val & PSC_AC97STAT_SR) == 0);
-
-	/* Configure AC97 controller.
-	 * Deep FIFO, 16-bit sample, DMA, make sure DMA matches fifo size.
-	 */
-	val = PSC_AC97CFG_SET_LEN(16);
-	val |= PSC_AC97CFG_RT_FIFO8 | PSC_AC97CFG_TT_FIFO8;
-
-	/* Enable device so we can at least
-	 * talk over the AC-link.
-	 */
-	au_writel(val, PSC_AC97CFG);
-	au_writel(PSC_AC97MSK_ALLMASK, PSC_AC97MSK);
-	au_sync();
-	val |= PSC_AC97CFG_DE_ENABLE;
-	au_writel(val, PSC_AC97CFG);
-	au_sync();
-
-	/* Wait for Device ready.
-	*/
-	do {
-		val = au_readl(PSC_AC97STAT);
-		au_sync();
-	} while ((val & PSC_AC97STAT_DR) == 0);
-
-	/* codec init */
-	if (!ac97_probe_codec(s->codec))
-		goto err_dev3;
-
-	s->codec_base_caps = rdcodec(s->codec, AC97_RESET);
-	s->codec_ext_caps = rdcodec(s->codec, AC97_EXTENDED_ID);
-	pr_info("AC'97 Base/Extended ID = %04x/%04x",
-	     s->codec_base_caps, s->codec_ext_caps);
-
-	if (!(s->codec_ext_caps & AC97_EXTID_VRA)) {
-		/* codec does not support VRA
-		*/
-		s->no_vra = 1;
-	} else if (!vra) {
-		/* Boot option says disable VRA
-		*/
-		u16 ac97_extstat = rdcodec(s->codec, AC97_EXTENDED_STATUS);
-		wrcodec(s->codec, AC97_EXTENDED_STATUS,
-			ac97_extstat & ~AC97_EXTSTAT_VRA);
-		s->no_vra = 1;
-	}
-	if (s->no_vra)
-		pr_info("no VRA, interpolating and decimating");
-
-	/* set mic to be the recording source */
-	val = SOUND_MASK_MIC;
-	mixdev_ioctl(s->codec, SOUND_MIXER_WRITE_RECSRC,
-		     (unsigned long) &val);
-
-	return 0;
-
- err_dev3:
-	unregister_sound_mixer(s->codec->dev_mixer);
- err_dev2:
-	unregister_sound_dsp(s->dev_audio);
- err_dev1:
-	au1xxx_dbdma_chan_free(s->dma_adc.dmanr);
- err_dma2:
-	au1xxx_dbdma_chan_free(s->dma_dac.dmanr);
- err_dma1:
-	release_mem_region(CPHYSADDR(AC97_PSC_SEL), 0x30);
-
-	ac97_release_codec(s->codec);
-	return -1;
-}
-
-static void __devinit
-au1550_remove(void)
-{
-	struct au1550_state *s = &au1550_state;
-
-	if (!s)
-		return;
-	synchronize_irq();
-	au1xxx_dbdma_chan_free(s->dma_adc.dmanr);
-	au1xxx_dbdma_chan_free(s->dma_dac.dmanr);
-	release_mem_region(CPHYSADDR(AC97_PSC_SEL), 0x30);
-	unregister_sound_dsp(s->dev_audio);
-	unregister_sound_mixer(s->codec->dev_mixer);
-	ac97_release_codec(s->codec);
-}
-
-static int __init
-init_au1550(void)
-{
-	return au1550_probe();
-}
-
-static void __exit
-cleanup_au1550(void)
-{
-	au1550_remove();
-}
-
-module_init(init_au1550);
-module_exit(cleanup_au1550);
-
-#ifndef MODULE
-
-static int __init
-au1550_setup(char *options)
-{
-	char           *this_opt;
-
-	if (!options || !*options)
-		return 0;
-
-	while ((this_opt = strsep(&options, ","))) {
-		if (!*this_opt)
-			continue;
-		if (!strncmp(this_opt, "vra", 3)) {
-			vra = 1;
-		}
-	}
-
-	return 1;
-}
-
-__setup("au1550_audio=", au1550_setup);
-
-#endif /* MODULE */