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, 1203 deletions

diff --git a/sound/oss/ac97_codec.c b/sound/oss/ac97_codec.c
deleted file mode 100644
index 0cd23d94888f..000000000000
--- a/sound/oss/ac97_codec.c
+++ /dev/null
@@ -1,1203 +0,0 @@
-/*
- * ac97_codec.c: Generic AC97 mixer/modem module
- *
- * Derived from ac97 mixer in maestro and trident driver.
- *
- * Copyright 2000 Silicon Integrated System Corporation
- *
- *	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.
- *
- **************************************************************************
- *
- * The Intel Audio Codec '97 specification is available at:
- * http://download.intel.com/support/motherboards/desktop/sb/ac97_r23.pdf
- *
- **************************************************************************
- *
- * History
- * May 02, 2003 Liam Girdwood <lrg@slimlogic.co.uk>
- *	Removed non existent WM9700
- *	Added support for WM9705, WM9708, WM9709, WM9710, WM9711
- *	WM9712 and WM9717
- * Mar 28, 2002 Randolph Bentson <bentson@holmsjoen.com>
- *	corrections to support WM9707 in ViewPad 1000
- * v0.4 Mar 15 2000 Ollie Lho
- *	dual codecs support verified with 4 channels output
- * v0.3 Feb 22 2000 Ollie Lho
- *	bug fix for record mask setting
- * v0.2 Feb 10 2000 Ollie Lho
- *	add ac97_read_proc for /proc/driver/{vendor}/ac97
- * v0.1 Jan 14 2000 Ollie Lho <ollie@sis.com.tw> 
- *	Isolated from trident.c to support multiple ac97 codec
- */
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/bitops.h>
-#include <linux/delay.h>
-#include <linux/pci.h>
-#include <linux/ac97_codec.h>
-#include <asm/uaccess.h>
-#include <linux/mutex.h>
-
-#define CODEC_ID_BUFSZ 14
-
-static int ac97_read_mixer(struct ac97_codec *codec, int oss_channel);
-static void ac97_write_mixer(struct ac97_codec *codec, int oss_channel, 
-			     unsigned int left, unsigned int right);
-static void ac97_set_mixer(struct ac97_codec *codec, unsigned int oss_mixer, unsigned int val );
-static int ac97_recmask_io(struct ac97_codec *codec, int rw, int mask);
-static int ac97_mixer_ioctl(struct ac97_codec *codec, unsigned int cmd, unsigned long arg);
-
-static int ac97_init_mixer(struct ac97_codec *codec);
-
-static int wolfson_init03(struct ac97_codec * codec);
-static int wolfson_init04(struct ac97_codec * codec);
-static int wolfson_init05(struct ac97_codec * codec);
-static int wolfson_init11(struct ac97_codec * codec);
-static int wolfson_init13(struct ac97_codec * codec);
-static int tritech_init(struct ac97_codec * codec);
-static int tritech_maestro_init(struct ac97_codec * codec);
-static int sigmatel_9708_init(struct ac97_codec *codec);
-static int sigmatel_9721_init(struct ac97_codec *codec);
-static int sigmatel_9744_init(struct ac97_codec *codec);
-static int ad1886_init(struct ac97_codec *codec);
-static int eapd_control(struct ac97_codec *codec, int);
-static int crystal_digital_control(struct ac97_codec *codec, int slots, int rate, int mode);
-static int cmedia_init(struct ac97_codec * codec);
-static int cmedia_digital_control(struct ac97_codec *codec, int slots, int rate, int mode);
-static int generic_digital_control(struct ac97_codec *codec, int slots, int rate, int mode);
-
-
-/*
- *	AC97 operations.
- *
- *	If you are adding a codec then you should be able to use
- *		eapd_ops - any codec that supports EAPD amp control (most)
- *		null_ops - any ancient codec that supports nothing
- *
- *	The three functions are
- *		init - used for non AC97 standard initialisation
- *		amplifier - used to do amplifier control (1=on 0=off)
- *		digital - switch to digital modes (0 = analog)
- *
- *	Not all codecs support all features, not all drivers use all the
- *	operations yet
- */
- 
-static struct ac97_ops null_ops = { NULL, NULL, NULL };
-static struct ac97_ops default_ops = { NULL, eapd_control, NULL };
-static struct ac97_ops default_digital_ops = { NULL, eapd_control, generic_digital_control};
-static struct ac97_ops wolfson_ops03 = { wolfson_init03, NULL, NULL };
-static struct ac97_ops wolfson_ops04 = { wolfson_init04, NULL, NULL };
-static struct ac97_ops wolfson_ops05 = { wolfson_init05, NULL, NULL };
-static struct ac97_ops wolfson_ops11 = { wolfson_init11, NULL, NULL };
-static struct ac97_ops wolfson_ops13 = { wolfson_init13, NULL, NULL };
-static struct ac97_ops tritech_ops = { tritech_init, NULL, NULL };
-static struct ac97_ops tritech_m_ops = { tritech_maestro_init, NULL, NULL };
-static struct ac97_ops sigmatel_9708_ops = { sigmatel_9708_init, NULL, NULL };
-static struct ac97_ops sigmatel_9721_ops = { sigmatel_9721_init, NULL, NULL };
-static struct ac97_ops sigmatel_9744_ops = { sigmatel_9744_init, NULL, NULL };
-static struct ac97_ops crystal_digital_ops = { NULL, eapd_control, crystal_digital_control };
-static struct ac97_ops ad1886_ops = { ad1886_init, eapd_control, NULL };
-static struct ac97_ops cmedia_ops = { NULL, eapd_control, NULL};
-static struct ac97_ops cmedia_digital_ops = { cmedia_init, eapd_control, cmedia_digital_control};
-
-/* sorted by vendor/device id */
-static const struct {
-	u32 id;
-	char *name;
-	struct ac97_ops *ops;
-	int flags;
-} ac97_codec_ids[] = {
-	{0x41445303, "Analog Devices AD1819",	&null_ops},
-	{0x41445340, "Analog Devices AD1881",	&null_ops},
-	{0x41445348, "Analog Devices AD1881A",	&null_ops},
-	{0x41445360, "Analog Devices AD1885",	&default_ops},
-	{0x41445361, "Analog Devices AD1886",	&ad1886_ops},
-	{0x41445370, "Analog Devices AD1981",	&null_ops},
-	{0x41445372, "Analog Devices AD1981A",	&null_ops},
-	{0x41445374, "Analog Devices AD1981B",	&null_ops},
-	{0x41445460, "Analog Devices AD1885",	&default_ops},
-	{0x41445461, "Analog Devices AD1886",	&ad1886_ops},
-	{0x414B4D00, "Asahi Kasei AK4540",	&null_ops},
-	{0x414B4D01, "Asahi Kasei AK4542",	&null_ops},
-	{0x414B4D02, "Asahi Kasei AK4543",	&null_ops},
-	{0x414C4326, "ALC100P",			&null_ops},
-	{0x414C4710, "ALC200/200P",		&null_ops},
-	{0x414C4720, "ALC650",			&default_digital_ops},
-	{0x434D4941, "CMedia",			&cmedia_ops,		AC97_NO_PCM_VOLUME },
-	{0x434D4942, "CMedia",			&cmedia_ops,		AC97_NO_PCM_VOLUME },
-	{0x434D4961, "CMedia",			&cmedia_digital_ops,	AC97_NO_PCM_VOLUME },
-	{0x43525900, "Cirrus Logic CS4297",	&default_ops},
-	{0x43525903, "Cirrus Logic CS4297",	&default_ops},
-	{0x43525913, "Cirrus Logic CS4297A rev A", &default_ops},
-	{0x43525914, "Cirrus Logic CS4297A rev B", &default_ops},
-	{0x43525923, "Cirrus Logic CS4298",	&null_ops},
-	{0x4352592B, "Cirrus Logic CS4294",	&null_ops},
-	{0x4352592D, "Cirrus Logic CS4294",	&null_ops},
-	{0x43525931, "Cirrus Logic CS4299 rev A", &crystal_digital_ops},
-	{0x43525933, "Cirrus Logic CS4299 rev C", &crystal_digital_ops},
-	{0x43525934, "Cirrus Logic CS4299 rev D", &crystal_digital_ops},
-	{0x43585430, "CXT48",			&default_ops,		AC97_DELUDED_MODEM },
-	{0x43585442, "CXT66",			&default_ops,		AC97_DELUDED_MODEM },
-	{0x44543031, "Diamond Technology DT0893", &default_ops},
-	{0x45838308, "ESS Allegro ES1988",	&null_ops},
-	{0x49434511, "ICE1232",			&null_ops}, /* I hope --jk */
-	{0x4e534331, "National Semiconductor LM4549", &null_ops},
-	{0x53494c22, "Silicon Laboratory Si3036", &null_ops},
-	{0x53494c23, "Silicon Laboratory Si3038", &null_ops},
-	{0x545200FF, "TriTech TR?????",		&tritech_m_ops},
-	{0x54524102, "TriTech TR28022",		&null_ops},
-	{0x54524103, "TriTech TR28023",		&null_ops},
-	{0x54524106, "TriTech TR28026",		&null_ops},
-	{0x54524108, "TriTech TR28028",		&tritech_ops},
-	{0x54524123, "TriTech TR A5",		&null_ops},
-	{0x574D4C03, "Wolfson WM9703/07/08/17",	&wolfson_ops03},
-	{0x574D4C04, "Wolfson WM9704M/WM9704Q",	&wolfson_ops04},
-	{0x574D4C05, "Wolfson WM9705/WM9710",   &wolfson_ops05},
-	{0x574D4C09, "Wolfson WM9709",		&null_ops},
-	{0x574D4C12, "Wolfson WM9711/9712",	&wolfson_ops11},
-	{0x574D4C13, "Wolfson WM9713",	&wolfson_ops13, AC97_DEFAULT_POWER_OFF},
-	{0x83847600, "SigmaTel STAC????",	&null_ops},
-	{0x83847604, "SigmaTel STAC9701/3/4/5", &null_ops},
-	{0x83847605, "SigmaTel STAC9704",	&null_ops},
-	{0x83847608, "SigmaTel STAC9708",	&sigmatel_9708_ops},
-	{0x83847609, "SigmaTel STAC9721/23",	&sigmatel_9721_ops},
-	{0x83847644, "SigmaTel STAC9744/45",	&sigmatel_9744_ops},
-	{0x83847652, "SigmaTel STAC9752/53",	&default_ops},
-	{0x83847656, "SigmaTel STAC9756/57",	&sigmatel_9744_ops},
-	{0x83847666, "SigmaTel STAC9750T",	&sigmatel_9744_ops},
-	{0x83847684, "SigmaTel STAC9783/84?",	&null_ops},
-	{0x57454301, "Winbond 83971D",		&null_ops},
-};
-
-/* this table has default mixer values for all OSS mixers. */
-static struct mixer_defaults {
-	int mixer;
-	unsigned int value;
-} mixer_defaults[SOUND_MIXER_NRDEVICES] = {
-	/* all values 0 -> 100 in bytes */
-	{SOUND_MIXER_VOLUME,	0x4343},
-	{SOUND_MIXER_BASS,	0x4343},
-	{SOUND_MIXER_TREBLE,	0x4343},
-	{SOUND_MIXER_PCM,	0x4343},
-	{SOUND_MIXER_SPEAKER,	0x4343},
-	{SOUND_MIXER_LINE,	0x4343},
-	{SOUND_MIXER_MIC,	0x0000},
-	{SOUND_MIXER_CD,	0x4343},
-	{SOUND_MIXER_ALTPCM,	0x4343},
-	{SOUND_MIXER_IGAIN,	0x4343},
-	{SOUND_MIXER_LINE1,	0x4343},
-	{SOUND_MIXER_PHONEIN,	0x4343},
-	{SOUND_MIXER_PHONEOUT,	0x4343},
-	{SOUND_MIXER_VIDEO,	0x4343},
-	{-1,0}
-};
-
-/* table to scale scale from OSS mixer value to AC97 mixer register value */	
-static struct ac97_mixer_hw {
-	unsigned char offset;
-	int scale;
-} ac97_hw[SOUND_MIXER_NRDEVICES]= {
-	[SOUND_MIXER_VOLUME]	=	{AC97_MASTER_VOL_STEREO,64},
-	[SOUND_MIXER_BASS]	=	{AC97_MASTER_TONE,	16},
-	[SOUND_MIXER_TREBLE]	=	{AC97_MASTER_TONE,	16},
-	[SOUND_MIXER_PCM]	=	{AC97_PCMOUT_VOL,	32},
-	[SOUND_MIXER_SPEAKER]	=	{AC97_PCBEEP_VOL,	16},
-	[SOUND_MIXER_LINE]	=	{AC97_LINEIN_VOL,	32},
-	[SOUND_MIXER_MIC]	=	{AC97_MIC_VOL,		32},
-	[SOUND_MIXER_CD]	=	{AC97_CD_VOL,		32},
-	[SOUND_MIXER_ALTPCM]	=	{AC97_HEADPHONE_VOL,	64},
-	[SOUND_MIXER_IGAIN]	=	{AC97_RECORD_GAIN,	16},
-	[SOUND_MIXER_LINE1]	=	{AC97_AUX_VOL,		32},
-	[SOUND_MIXER_PHONEIN]	= 	{AC97_PHONE_VOL,	32},
-	[SOUND_MIXER_PHONEOUT]	= 	{AC97_MASTER_VOL_MONO,	64},
-	[SOUND_MIXER_VIDEO]	=	{AC97_VIDEO_VOL,	32},
-};
-
-/* the following tables allow us to go from OSS <-> ac97 quickly. */
-enum ac97_recsettings {
-	AC97_REC_MIC=0,
-	AC97_REC_CD,
-	AC97_REC_VIDEO,
-	AC97_REC_AUX,
-	AC97_REC_LINE,
-	AC97_REC_STEREO, /* combination of all enabled outputs..  */
-	AC97_REC_MONO,	      /*.. or the mono equivalent */
-	AC97_REC_PHONE
-};
-
-static const unsigned int ac97_rm2oss[] = {
-	[AC97_REC_MIC] 	 = SOUND_MIXER_MIC,
-	[AC97_REC_CD] 	 = SOUND_MIXER_CD,
-	[AC97_REC_VIDEO] = SOUND_MIXER_VIDEO,
-	[AC97_REC_AUX] 	 = SOUND_MIXER_LINE1,
-	[AC97_REC_LINE]  = SOUND_MIXER_LINE,
-	[AC97_REC_STEREO]= SOUND_MIXER_IGAIN,
-	[AC97_REC_PHONE] = SOUND_MIXER_PHONEIN
-};
-
-/* indexed by bit position */
-static const unsigned int ac97_oss_rm[] = {
-	[SOUND_MIXER_MIC] 	= AC97_REC_MIC,
-	[SOUND_MIXER_CD] 	= AC97_REC_CD,
-	[SOUND_MIXER_VIDEO] 	= AC97_REC_VIDEO,
-	[SOUND_MIXER_LINE1] 	= AC97_REC_AUX,
-	[SOUND_MIXER_LINE] 	= AC97_REC_LINE,
-	[SOUND_MIXER_IGAIN]	= AC97_REC_STEREO,
-	[SOUND_MIXER_PHONEIN] 	= AC97_REC_PHONE
-};
-
-static LIST_HEAD(codecs);
-static LIST_HEAD(codec_drivers);
-static DEFINE_MUTEX(codec_mutex);
-
-/* reads the given OSS mixer from the ac97 the caller must have insured that the ac97 knows
-   about that given mixer, and should be holding a spinlock for the card */
-static int ac97_read_mixer(struct ac97_codec *codec, int oss_channel) 
-{
-	u16 val;
-	int ret = 0;
-	int scale;
-	struct ac97_mixer_hw *mh = &ac97_hw[oss_channel];
-
-	val = codec->codec_read(codec , mh->offset);
-
-	if (val & AC97_MUTE) {
-		ret = 0;
-	} else if (AC97_STEREO_MASK & (1 << oss_channel)) {
-		/* nice stereo mixers .. */
-		int left,right;
-
-		left = (val >> 8)  & 0x7f;
-		right = val  & 0x7f;
-
-		if (oss_channel == SOUND_MIXER_IGAIN) {
-			right = (right * 100) / mh->scale;
-			left = (left * 100) / mh->scale;
-		} else {
-			/* these may have 5 or 6 bit resolution */
-			if(oss_channel == SOUND_MIXER_VOLUME || oss_channel == SOUND_MIXER_ALTPCM)
-				scale = (1 << codec->bit_resolution);
-			else
-				scale = mh->scale;
-
-			right = 100 - ((right * 100) / scale);
-			left = 100 - ((left * 100) / scale);
-		}
-		ret = left | (right << 8);
-	} else if (oss_channel == SOUND_MIXER_SPEAKER) {
-		ret = 100 - ((((val & 0x1e)>>1) * 100) / mh->scale);
-	} else if (oss_channel == SOUND_MIXER_PHONEIN) {
-		ret = 100 - (((val & 0x1f) * 100) / mh->scale);
-	} else if (oss_channel == SOUND_MIXER_PHONEOUT) {
-		scale = (1 << codec->bit_resolution);
-		ret = 100 - (((val & 0x1f) * 100) / scale);
-	} else if (oss_channel == SOUND_MIXER_MIC) {
-		ret = 100 - (((val & 0x1f) * 100) / mh->scale);
-		/*  the low bit is optional in the tone sliders and masking
-		    it lets us avoid the 0xf 'bypass'.. */
-	} else if (oss_channel == SOUND_MIXER_BASS) {
-		ret = 100 - ((((val >> 8) & 0xe) * 100) / mh->scale);
-	} else if (oss_channel == SOUND_MIXER_TREBLE) {
-		ret = 100 - (((val & 0xe) * 100) / mh->scale);
-	}
-
-#ifdef DEBUG
-	printk("ac97_codec: read OSS mixer %2d (%s ac97 register 0x%02x), "
-	       "0x%04x -> 0x%04x\n",
-	       oss_channel, codec->id ? "Secondary" : "Primary",
-	       mh->offset, val, ret);
-#endif
-
-	return ret;
-}
-
-/* write the OSS encoded volume to the given OSS encoded mixer, again caller's job to
-   make sure all is well in arg land, call with spinlock held */
-static void ac97_write_mixer(struct ac97_codec *codec, int oss_channel,
-		      unsigned int left, unsigned int right)
-{
-	u16 val = 0;
-	int scale;
-	struct ac97_mixer_hw *mh = &ac97_hw[oss_channel];
-
-#ifdef DEBUG
-	printk("ac97_codec: wrote OSS mixer %2d (%s ac97 register 0x%02x), "
-	       "left vol:%2d, right vol:%2d:",
-	       oss_channel, codec->id ? "Secondary" : "Primary",
-	       mh->offset, left, right);
-#endif
-
-	if (AC97_STEREO_MASK & (1 << oss_channel)) {
-		/* stereo mixers */
-		if (left == 0 && right == 0) {
-			val = AC97_MUTE;
-		} else {
-			if (oss_channel == SOUND_MIXER_IGAIN) {
-				right = (right * mh->scale) / 100;
-				left = (left * mh->scale) / 100;
-				if (right >= mh->scale)
-					right = mh->scale-1;
-				if (left >= mh->scale)
-					left = mh->scale-1;
-			} else {
-				/* these may have 5 or 6 bit resolution */
-				if (oss_channel == SOUND_MIXER_VOLUME ||
-				    oss_channel == SOUND_MIXER_ALTPCM)
-					scale = (1 << codec->bit_resolution);
-				else
-					scale = mh->scale;
-
-				right = ((100 - right) * scale) / 100;
-				left = ((100 - left) * scale) / 100;
-				if (right >= scale)
-					right = scale-1;
-				if (left >= scale)
-					left = scale-1;
-			}
-			val = (left << 8) | right;
-		}
-	} else if (oss_channel == SOUND_MIXER_BASS) {
-		val = codec->codec_read(codec , mh->offset) & ~0x0f00;
-		left = ((100 - left) * mh->scale) / 100;
-		if (left >= mh->scale)
-			left = mh->scale-1;
-		val |= (left << 8) & 0x0e00;
-	} else if (oss_channel == SOUND_MIXER_TREBLE) {
-		val = codec->codec_read(codec , mh->offset) & ~0x000f;
-		left = ((100 - left) * mh->scale) / 100;
-		if (left >= mh->scale)
-			left = mh->scale-1;
-		val |= left & 0x000e;
-	} else if(left == 0) {
-		val = AC97_MUTE;
-	} else if (oss_channel == SOUND_MIXER_SPEAKER) {
-		left = ((100 - left) * mh->scale) / 100;
-		if (left >= mh->scale)
-			left = mh->scale-1;
-		val = left << 1;
-	} else if (oss_channel == SOUND_MIXER_PHONEIN) {
-		left = ((100 - left) * mh->scale) / 100;
-		if (left >= mh->scale)
-			left = mh->scale-1;
-		val = left;
-	} else if (oss_channel == SOUND_MIXER_PHONEOUT) {
-		scale = (1 << codec->bit_resolution);
-		left = ((100 - left) * scale) / 100;
-		if (left >= mh->scale)
-			left = mh->scale-1;
-		val = left;
-	} else if (oss_channel == SOUND_MIXER_MIC) {
-		val = codec->codec_read(codec , mh->offset) & ~0x801f;
-		left = ((100 - left) * mh->scale) / 100;
-		if (left >= mh->scale)
-			left = mh->scale-1;
-		val |= left;
-		/*  the low bit is optional in the tone sliders and masking
-		    it lets us avoid the 0xf 'bypass'.. */
-	}
-#ifdef DEBUG
-	printk(" 0x%04x", val);
-#endif
-
-	codec->codec_write(codec, mh->offset, val);
-
-#ifdef DEBUG
-	val = codec->codec_read(codec, mh->offset);
-	printk(" -> 0x%04x\n", val);
-#endif
-}
-
-/* a thin wrapper for write_mixer */
-static void ac97_set_mixer(struct ac97_codec *codec, unsigned int oss_mixer, unsigned int val ) 
-{
-	unsigned int left,right;
-
-	/* cleanse input a little */
-	right = ((val >> 8)  & 0xff) ;
-	left = (val  & 0xff) ;
-
-	if (right > 100) right = 100;
-	if (left > 100) left = 100;
-
-	codec->mixer_state[oss_mixer] = (right << 8) | left;
-	codec->write_mixer(codec, oss_mixer, left, right);
-}
-
-/* read or write the recmask, the ac97 can really have left and right recording
-   inputs independently set, but OSS doesn't seem to want us to express that to
-   the user. the caller guarantees that we have a supported bit set, and they
-   must be holding the card's spinlock */
-static int ac97_recmask_io(struct ac97_codec *codec, int rw, int mask) 
-{
-	unsigned int val;
-
-	if (rw) {
-		/* read it from the card */
-		val = codec->codec_read(codec, AC97_RECORD_SELECT);
-#ifdef DEBUG
-		printk("ac97_codec: ac97 recmask to set to 0x%04x\n", val);
-#endif
-		return (1 << ac97_rm2oss[val & 0x07]);
-	}
-
-	/* else, write the first set in the mask as the
-	   output */	
-	/* clear out current set value first (AC97 supports only 1 input!) */
-	val = (1 << ac97_rm2oss[codec->codec_read(codec, AC97_RECORD_SELECT) & 0x07]);
-	if (mask != val)
-	    mask &= ~val;
-       
-	val = ffs(mask); 
-	val = ac97_oss_rm[val-1];
-	val |= val << 8;  /* set both channels */
-
-#ifdef DEBUG
-	printk("ac97_codec: setting ac97 recmask to 0x%04x\n", val);
-#endif
-
-	codec->codec_write(codec, AC97_RECORD_SELECT, val);
-
-	return 0;
-};
-
-static int ac97_mixer_ioctl(struct ac97_codec *codec, unsigned int cmd, unsigned long arg)
-{
-	int i, val = 0;
-
-	if (cmd == SOUND_MIXER_INFO) {
-		mixer_info info;
-		memset(&info, 0, sizeof(info));
-		strlcpy(info.id, codec->name, sizeof(info.id));
-		strlcpy(info.name, codec->name, sizeof(info.name));
-		info.modify_counter = codec->modcnt;
-		if (copy_to_user((void __user *)arg, &info, sizeof(info)))
-			return -EFAULT;
-		return 0;
-	}
-	if (cmd == SOUND_OLD_MIXER_INFO) {
-		_old_mixer_info info;
-		memset(&info, 0, sizeof(info));
-		strlcpy(info.id, codec->name, sizeof(info.id));
-		strlcpy(info.name, codec->name, sizeof(info.name));
-		if (copy_to_user((void __user *)arg, &info, sizeof(info)))
-			return -EFAULT;
-		return 0;
-	}
-
-	if (_IOC_TYPE(cmd) != 'M' || _SIOC_SIZE(cmd) != sizeof(int))
-		return -EINVAL;
-
-	if (cmd == OSS_GETVERSION)
-		return put_user(SOUND_VERSION, (int __user *)arg);
-
-	if (_SIOC_DIR(cmd) == _SIOC_READ) {
-		switch (_IOC_NR(cmd)) {
-		case SOUND_MIXER_RECSRC: /* give them the current record source */
-			if (!codec->recmask_io) {
-				val = 0;
-			} else {
-				val = codec->recmask_io(codec, 1, 0);
-			}
-			break;
-
-		case SOUND_MIXER_DEVMASK: /* give them the supported mixers */
-			val = codec->supported_mixers;
-			break;
-
-		case SOUND_MIXER_RECMASK: /* Arg contains a bit for each supported recording source */
-			val = codec->record_sources;
-			break;
-
-		case SOUND_MIXER_STEREODEVS: /* Mixer channels supporting stereo */
-			val = codec->stereo_mixers;
-			break;
-
-		case SOUND_MIXER_CAPS:
-			val = SOUND_CAP_EXCL_INPUT;
-			break;
-
-		default: /* read a specific mixer */
-			i = _IOC_NR(cmd);
-
-			if (!supported_mixer(codec, i)) 
-				return -EINVAL;
-
-			/* do we ever want to touch the hardware? */
-		        /* val = codec->read_mixer(codec, i); */
-			val = codec->mixer_state[i];
- 			break;
-		}
-		return put_user(val, (int __user *)arg);
-	}
-
-	if (_SIOC_DIR(cmd) == (_SIOC_WRITE|_SIOC_READ)) {
-		codec->modcnt++;
-		if (get_user(val, (int __user *)arg))
-			return -EFAULT;
-
-		switch (_IOC_NR(cmd)) {
-		case SOUND_MIXER_RECSRC: /* Arg contains a bit for each recording source */
-			if (!codec->recmask_io) return -EINVAL;
-			if (!val) return 0;
-			if (!(val &= codec->record_sources)) return -EINVAL;
-
-			codec->recmask_io(codec, 0, val);
-
-			return 0;
-		default: /* write a specific mixer */
-			i = _IOC_NR(cmd);
-
-			if (!supported_mixer(codec, i)) 
-				return -EINVAL;
-
-			ac97_set_mixer(codec, i, val);
-
-			return 0;
-		}
-	}
-	return -EINVAL;
-}
-
-/**
- *	codec_id	-  Turn id1/id2 into a PnP string
- *	@id1: Vendor ID1
- *	@id2: Vendor ID2
- *	@buf: CODEC_ID_BUFSZ byte buffer
- *
- *	Fills buf with a zero terminated PnP ident string for the id1/id2
- *	pair. For convenience the return is the passed in buffer pointer.
- */
- 
-static char *codec_id(u16 id1, u16 id2, char *buf)
-{
-	if(id1&0x8080) {
-		snprintf(buf, CODEC_ID_BUFSZ, "0x%04x:0x%04x", id1, id2);
-	} else {
-		buf[0] = (id1 >> 8);
-		buf[1] = (id1 & 0xFF);
-		buf[2] = (id2 >> 8);
-		snprintf(buf+3, CODEC_ID_BUFSZ - 3, "%d", id2&0xFF);
-	}
-	return buf;
-}
- 
-/**
- *	ac97_check_modem - Check if the Codec is a modem
- *	@codec: codec to check
- *
- *	Return true if the device is an AC97 1.0 or AC97 2.0 modem
- */
- 
-static int ac97_check_modem(struct ac97_codec *codec)
-{
-	/* Check for an AC97 1.0 soft modem (ID1) */
-	if(codec->codec_read(codec, AC97_RESET) & 2)
-		return 1;
-	/* Check for an AC97 2.x soft modem */
-	codec->codec_write(codec, AC97_EXTENDED_MODEM_ID, 0L);
-	if(codec->codec_read(codec, AC97_EXTENDED_MODEM_ID) & 1)
-		return 1;
-	return 0;
-}
-
-
-/**
- *	ac97_alloc_codec - Allocate an AC97 codec
- *
- *	Returns a new AC97 codec structure. AC97 codecs may become
- *	refcounted soon so this interface is needed. Returns with
- *	one reference taken.
- */
- 
-struct ac97_codec *ac97_alloc_codec(void)
-{
-	struct ac97_codec *codec = kzalloc(sizeof(struct ac97_codec), GFP_KERNEL);
-	if(!codec)
-		return NULL;
-
-	spin_lock_init(&codec->lock);
-	INIT_LIST_HEAD(&codec->list);
-	return codec;
-}
-
-EXPORT_SYMBOL(ac97_alloc_codec);
-
-/**
- *	ac97_release_codec -	Release an AC97 codec
- *	@codec: codec to release
- *
- *	Release an allocated AC97 codec. This will be refcounted in
- *	time but for the moment is trivial. Calls the unregister
- *	handler if the codec is now defunct.
- */
- 
-void ac97_release_codec(struct ac97_codec *codec)
-{
-	/* Remove from the list first, we don't want to be
-	   "rediscovered" */
-	mutex_lock(&codec_mutex);
-	list_del(&codec->list);
-	mutex_unlock(&codec_mutex);
-	/*
-	 *	The driver needs to deal with internal
-	 *	locking to avoid accidents here. 
-	 */
-	if(codec->driver)
-		codec->driver->remove(codec, codec->driver);
-	kfree(codec);
-}
-
-EXPORT_SYMBOL(ac97_release_codec);
-
-/**
- *	ac97_probe_codec - Initialize and setup AC97-compatible codec
- *	@codec: (in/out) Kernel info for a single AC97 codec
- *
- *	Reset the AC97 codec, then initialize the mixer and
- *	the rest of the @codec structure.
- *
- *	The codec_read and codec_write fields of @codec are
- *	required to be setup and working when this function
- *	is called.  All other fields are set by this function.
- *
- *	codec_wait field of @codec can optionally be provided
- *	when calling this function.  If codec_wait is not %NULL,
- *	this function will call codec_wait any time it is
- *	necessary to wait for the audio chip to reach the
- *	codec-ready state.  If codec_wait is %NULL, then
- *	the default behavior is to call schedule_timeout.
- *	Currently codec_wait is used to wait for AC97 codec
- *	reset to complete. 
- *
- *     Some codecs will power down when a register reset is
- *     performed. We now check for such codecs.
- *
- *	Returns 1 (true) on success, or 0 (false) on failure.
- */
- 
-int ac97_probe_codec(struct ac97_codec *codec)
-{
-	u16 id1, id2;
-	u16 audio;
-	int i;
-	char cidbuf[CODEC_ID_BUFSZ];
-	u16 f;
-	struct list_head *l;
-	struct ac97_driver *d;
-	
-	/* wait for codec-ready state */
-	if (codec->codec_wait)
-		codec->codec_wait(codec);
-	else
-		udelay(10);
-
-	/* will the codec power down if register reset ? */
-	id1 = codec->codec_read(codec, AC97_VENDOR_ID1);
-	id2 = codec->codec_read(codec, AC97_VENDOR_ID2);
-	codec->name = NULL;
-	codec->codec_ops = &null_ops;
-	for (i = 0; i < ARRAY_SIZE(ac97_codec_ids); i++) {
-		if (ac97_codec_ids[i].id == ((id1 << 16) | id2)) {
-			codec->type = ac97_codec_ids[i].id;
-			codec->name = ac97_codec_ids[i].name;
-			codec->codec_ops = ac97_codec_ids[i].ops;
-			codec->flags = ac97_codec_ids[i].flags;
-			break;
-		}
-	}
-
-	codec->model = (id1 << 16) | id2;
-	if ((codec->flags & AC97_DEFAULT_POWER_OFF) == 0) {
-		/* reset codec and wait for the ready bit before we continue */
-		codec->codec_write(codec, AC97_RESET, 0L);
-		if (codec->codec_wait)
-			codec->codec_wait(codec);
-		else
-			udelay(10);
-	}
-
-	/* probing AC97 codec, AC97 2.0 says that bit 15 of register 0x00 (reset) should
-	 * be read zero.
-	 *
-	 * FIXME: is the following comment outdated?  -jgarzik
-	 * Probing of AC97 in this way is not reliable, it is not even SAFE !!
-	 */
-	if ((audio = codec->codec_read(codec, AC97_RESET)) & 0x8000) {
-		printk(KERN_ERR "ac97_codec: %s ac97 codec not present\n",
-		       (codec->id & 0x2) ? (codec->id&1 ? "4th" : "Tertiary")
-		       : (codec->id&1 ? "Secondary":  "Primary"));
-		return 0;
-	}
-	
-	/* probe for Modem Codec */
-	codec->modem = ac97_check_modem(codec);
-
-	/* enable SPDIF */
-	f = codec->codec_read(codec, AC97_EXTENDED_STATUS);
-	if((codec->codec_ops == &null_ops) && (f & 4))
-		codec->codec_ops = &default_digital_ops;
-	
-	/* A device which thinks its a modem but isn't */
-	if(codec->flags & AC97_DELUDED_MODEM)
-		codec->modem = 0;
-		
-	if (codec->name == NULL)
-		codec->name = "Unknown";
-	printk(KERN_INFO "ac97_codec: AC97 %s codec, id: %s (%s)\n", 
-		codec->modem ? "Modem" : (audio ? "Audio" : ""),
-	       codec_id(id1, id2, cidbuf), codec->name);
-
-	if(!ac97_init_mixer(codec))
-		return 0;
-		
-	/* 
-	 *	Attach last so the caller can override the mixer
-	 *	callbacks.
-	 */
-	 
-	mutex_lock(&codec_mutex);
-	list_add(&codec->list, &codecs);
-
-	list_for_each(l, &codec_drivers) {
-		d = list_entry(l, struct ac97_driver, list);
-		if ((codec->model ^ d->codec_id) & d->codec_mask)
-			continue;
-		if(d->probe(codec, d) == 0)
-		{
-			codec->driver = d;
-			break;
-		}
-	}
-
-	mutex_unlock(&codec_mutex);
-	return 1;
-}
-
-static int ac97_init_mixer(struct ac97_codec *codec)
-{
-	u16 cap;
-	int i;
-
-	cap = codec->codec_read(codec, AC97_RESET);
-
-	/* mixer masks */
-	codec->supported_mixers = AC97_SUPPORTED_MASK;
-	codec->stereo_mixers = AC97_STEREO_MASK;
-	codec->record_sources = AC97_RECORD_MASK;
-	if (!(cap & 0x04))
-		codec->supported_mixers &= ~(SOUND_MASK_BASS|SOUND_MASK_TREBLE);
-	if (!(cap & 0x10))
-		codec->supported_mixers &= ~SOUND_MASK_ALTPCM;
-
-
-	/* detect bit resolution */
-	codec->codec_write(codec, AC97_MASTER_VOL_STEREO, 0x2020);
-	if(codec->codec_read(codec, AC97_MASTER_VOL_STEREO) == 0x2020)
-		codec->bit_resolution = 6;
-	else
-		codec->bit_resolution = 5;
-
-	/* generic OSS to AC97 wrapper */
-	codec->read_mixer = ac97_read_mixer;
-	codec->write_mixer = ac97_write_mixer;
-	codec->recmask_io = ac97_recmask_io;
-	codec->mixer_ioctl = ac97_mixer_ioctl;
-
-	/* initialize mixer channel volumes */
-	for (i = 0; i < SOUND_MIXER_NRDEVICES; i++) {
-		struct mixer_defaults *md = &mixer_defaults[i];
-		if (md->mixer == -1) 
-			break;
-		if (!supported_mixer(codec, md->mixer)) 
-			continue;
-		ac97_set_mixer(codec, md->mixer, md->value);
-	}
-
-	/* codec specific initialization for 4-6 channel output or secondary codec stuff */
-	if (codec->codec_ops->init != NULL) {
-		codec->codec_ops->init(codec);
-	}
-
-	/*
-	 *	Volume is MUTE only on this device. We have to initialise
-	 *	it but its useless beyond that.
-	 */
-	if(codec->flags & AC97_NO_PCM_VOLUME)
-	{
-		codec->supported_mixers &= ~SOUND_MASK_PCM;
-		printk(KERN_WARNING "AC97 codec does not have proper volume support.\n");
-	}
-	return 1;
-}
-
-#define AC97_SIGMATEL_ANALOG    0x6c	/* Analog Special */
-#define AC97_SIGMATEL_DAC2INVERT 0x6e
-#define AC97_SIGMATEL_BIAS1     0x70
-#define AC97_SIGMATEL_BIAS2     0x72
-#define AC97_SIGMATEL_MULTICHN  0x74	/* Multi-Channel programming */
-#define AC97_SIGMATEL_CIC1      0x76
-#define AC97_SIGMATEL_CIC2      0x78
-
-
-static int sigmatel_9708_init(struct ac97_codec * codec)
-{
-	u16 codec72, codec6c;
-
-	codec72 = codec->codec_read(codec, AC97_SIGMATEL_BIAS2) & 0x8000;
-	codec6c = codec->codec_read(codec, AC97_SIGMATEL_ANALOG);
-
-	if ((codec72==0) && (codec6c==0)) {
-		codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
-		codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x1000);
-		codec->codec_write(codec, AC97_SIGMATEL_BIAS1, 0xabba);
-		codec->codec_write(codec, AC97_SIGMATEL_BIAS2, 0x0007);
-	} else if ((codec72==0x8000) && (codec6c==0)) {
-		codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
-		codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x1001);
-		codec->codec_write(codec, AC97_SIGMATEL_DAC2INVERT, 0x0008);
-	} else if ((codec72==0x8000) && (codec6c==0x0080)) {
-		/* nothing */
-	}
-	codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x0000);
-	return 0;
-}
-
-
-static int sigmatel_9721_init(struct ac97_codec * codec)
-{
-	/* Only set up secondary codec */
-	if (codec->id == 0)
-		return 0;
-
-	codec->codec_write(codec, AC97_SURROUND_MASTER, 0L);
-
-	/* initialize SigmaTel STAC9721/23 as secondary codec, decoding AC link
-	   sloc 3,4 = 0x01, slot 7,8 = 0x00, */
-	codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x00);
-
-	/* we don't have the crystal when we are on an AMR card, so use
-	   BIT_CLK as our clock source. Write the magic word ABBA and read
-	   back to enable register 0x78 */
-	codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
-	codec->codec_read(codec, AC97_SIGMATEL_CIC1);
-
-	/* sync all the clocks*/
-	codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x3802);
-
-	return 0;
-}
-
-
-static int sigmatel_9744_init(struct ac97_codec * codec)
-{
-	// patch for SigmaTel
-	codec->codec_write(codec, AC97_SIGMATEL_CIC1, 0xabba);
-	codec->codec_write(codec, AC97_SIGMATEL_CIC2, 0x0000); // is this correct? --jk
-	codec->codec_write(codec, AC97_SIGMATEL_BIAS1, 0xabba);
-	codec->codec_write(codec, AC97_SIGMATEL_BIAS2, 0x0002);
-	codec->codec_write(codec, AC97_SIGMATEL_MULTICHN, 0x0000);
-	return 0;
-}
-
-static int cmedia_init(struct ac97_codec *codec)
-{
-	/* Initialise the CMedia 9739 */
-	/*
-		We could set various options here
-		Register 0x20 bit 0x100 sets mic as center bass
-		Also do multi_channel_ctrl &=~0x3000 |=0x1000
-		
-		For now we set up the GPIO and PC beep 
-	*/
-	
-	u16 v;
-	
-	/* MIC */
-	codec->codec_write(codec, 0x64, 0x3000);
-	v = codec->codec_read(codec, 0x64);
-	v &= ~0x8000;
-	codec->codec_write(codec, 0x64, v);
-	codec->codec_write(codec, 0x70, 0x0100);
-	codec->codec_write(codec, 0x72, 0x0020);
-	return 0;
-}
-	
-#define AC97_WM97XX_FMIXER_VOL 0x72
-#define AC97_WM97XX_RMIXER_VOL 0x74
-#define AC97_WM97XX_TEST 0x5a
-#define AC97_WM9704_RPCM_VOL 0x70
-#define AC97_WM9711_OUT3VOL 0x16
-
-static int wolfson_init03(struct ac97_codec * codec)
-{
-	/* this is known to work for the ViewSonic ViewPad 1000 */
-	codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
-	codec->codec_write(codec, AC97_GENERAL_PURPOSE, 0x8000);
-	return 0;
-}
-
-static int wolfson_init04(struct ac97_codec * codec)
-{
-	codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
-	codec->codec_write(codec, AC97_WM97XX_RMIXER_VOL, 0x0808);
-
-	// patch for DVD noise
-	codec->codec_write(codec, AC97_WM97XX_TEST, 0x0200);
-
-	// init vol as PCM vol
-	codec->codec_write(codec, AC97_WM9704_RPCM_VOL,
-		codec->codec_read(codec, AC97_PCMOUT_VOL));
-
-	/* set rear surround volume */
-	codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0000);
-	return 0;
-}
-
-/* WM9705, WM9710 */
-static int wolfson_init05(struct ac97_codec * codec)
-{
-	/* set front mixer volume */
-	codec->codec_write(codec, AC97_WM97XX_FMIXER_VOL, 0x0808);
-	return 0;
-}
-
-/* WM9711, WM9712 */
-static int wolfson_init11(struct ac97_codec * codec)
-{
-	/* stop pop's during suspend/resume */
-	codec->codec_write(codec, AC97_WM97XX_TEST,
-		codec->codec_read(codec, AC97_WM97XX_TEST) & 0xffbf);
-
-	/* set out3 volume */
-	codec->codec_write(codec, AC97_WM9711_OUT3VOL, 0x0808);
-	return 0;
-}
-
-/* WM9713 */
-static int wolfson_init13(struct ac97_codec * codec)
-{
-	codec->codec_write(codec, AC97_RECORD_GAIN, 0x00a0);
-	codec->codec_write(codec, AC97_POWER_CONTROL, 0x0000);
-	codec->codec_write(codec, AC97_EXTENDED_MODEM_ID, 0xDA00);
-	codec->codec_write(codec, AC97_EXTEND_MODEM_STAT, 0x3810);
-	codec->codec_write(codec, AC97_PHONE_VOL, 0x0808);
-	codec->codec_write(codec, AC97_PCBEEP_VOL, 0x0808);
-
-	return 0;
-}
-
-static int tritech_init(struct ac97_codec * codec)
-{
-	codec->codec_write(codec, 0x26, 0x0300);
-	codec->codec_write(codec, 0x26, 0x0000);
-	codec->codec_write(codec, AC97_SURROUND_MASTER, 0x0000);
-	codec->codec_write(codec, AC97_RESERVED_3A, 0x0000);
-	return 0;
-}
-
-
-/* copied from drivers/sound/maestro.c */
-static int tritech_maestro_init(struct ac97_codec * codec)
-{
-	/* no idea what this does */
-	codec->codec_write(codec, 0x2A, 0x0001);
-	codec->codec_write(codec, 0x2C, 0x0000);
-	codec->codec_write(codec, 0x2C, 0XFFFF);
-	return 0;
-}
-
-
-
-/* 
- *	Presario700 workaround 
- * 	for Jack Sense/SPDIF Register mis-setting causing
- *	no audible output
- *	by Santiago Nullo 04/05/2002
- */
-
-#define AC97_AD1886_JACK_SENSE 0x72
-
-static int ad1886_init(struct ac97_codec * codec)
-{
-	/* from AD1886 Specs */
-	codec->codec_write(codec, AC97_AD1886_JACK_SENSE, 0x0010);
-	return 0;
-}
-
-
-
-
-/*
- *	This is basically standard AC97. It should work as a default for
- *	almost all modern codecs. Note that some cards wire EAPD *backwards*
- *	That side of it is up to the card driver not us to cope with.
- *
- */
-
-static int eapd_control(struct ac97_codec * codec, int on)
-{
-	if(on)
-		codec->codec_write(codec, AC97_POWER_CONTROL,
-			codec->codec_read(codec, AC97_POWER_CONTROL)|0x8000);
-	else
-		codec->codec_write(codec, AC97_POWER_CONTROL,
-			codec->codec_read(codec, AC97_POWER_CONTROL)&~0x8000);
-	return 0;
-}
-
-static int generic_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
-{
-	u16 reg;
-	
-	reg = codec->codec_read(codec, AC97_SPDIF_CONTROL);
-	
-	switch(rate)
-	{
-		/* Off by default */
-		default:
-		case 0:
-			reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
-			codec->codec_write(codec, AC97_EXTENDED_STATUS, (reg & ~AC97_EA_SPDIF));
-			if(rate == 0)
-				return 0;
-			return -EINVAL;
-		case 1:
-			reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_48K;
-			break;
-		case 2:
-			reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_44K;
-			break;
-		case 3:
-			reg = (reg & AC97_SC_SPSR_MASK) | AC97_SC_SPSR_32K;
-			break;
-	}
-	
-	reg &= ~AC97_SC_CC_MASK;
-	reg |= (mode & AUDIO_CCMASK) << 6;
-	
-	if(mode & AUDIO_DIGITAL)
-		reg |= 2;
-	if(mode & AUDIO_PRO)
-		reg |= 1;
-	if(mode & AUDIO_DRS)
-		reg |= 0x4000;
-
-	codec->codec_write(codec, AC97_SPDIF_CONTROL, reg);
-
-	reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
-	reg &= (AC97_EA_SLOT_MASK);
-	reg |= AC97_EA_VRA | AC97_EA_SPDIF | slots;
-	codec->codec_write(codec, AC97_EXTENDED_STATUS, reg);
-	
-	reg = codec->codec_read(codec, AC97_EXTENDED_STATUS);
-	if(!(reg & 0x0400))
-	{
-		codec->codec_write(codec, AC97_EXTENDED_STATUS, reg & ~ AC97_EA_SPDIF);
-		return -EINVAL;
-	}
-	return 0;
-}
-
-/*
- *	Crystal digital audio control (CS4299)
- */
- 
-static int crystal_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
-{
-	u16 cv;
-
-	if(mode & AUDIO_DIGITAL)
-		return -EINVAL;
-		
-	switch(rate)
-	{
-		case 0: cv = 0x0; break;	/* SPEN off */
-		case 48000: cv = 0x8004; break;	/* 48KHz digital */
-		case 44100: cv = 0x8104; break;	/* 44.1KHz digital */
-		case 32768: 			/* 32Khz */
-		default:
-			return -EINVAL;
-	}
-	codec->codec_write(codec, 0x68, cv);
-	return 0;
-}
-
-/*
- *	CMedia digital audio control
- *	Needs more work.
- */
- 
-static int cmedia_digital_control(struct ac97_codec *codec, int slots, int rate, int mode)
-{
-	u16 cv;
-
-	if(mode & AUDIO_DIGITAL)
-		return -EINVAL;
-		
-	switch(rate)
-	{
-		case 0:		cv = 0x0001; break;	/* SPEN off */
-		case 48000:	cv = 0x0009; break;	/* 48KHz digital */
-		default:
-			return -EINVAL;
-	}
-	codec->codec_write(codec, 0x2A, 0x05c4);
-	codec->codec_write(codec, 0x6C, cv);
-	
-	/* Switch on mix to surround */
-	cv = codec->codec_read(codec, 0x64);
-	cv &= ~0x0200;
-	if(mode)
-		cv |= 0x0200;
-	codec->codec_write(codec, 0x64, cv);
-	return 0;
-}
-
-
-/* copied from drivers/sound/maestro.c */
-#if 0  /* there has been 1 person on the planet with a pt101 that we
-        know of.  If they care, they can put this back in :) */
-static int pt101_init(struct ac97_codec * codec)
-{
-	printk(KERN_INFO "ac97_codec: PT101 Codec detected, initializing but _not_ installing mixer device.\n");
-	/* who knows.. */
-	codec->codec_write(codec, 0x2A, 0x0001);
-	codec->codec_write(codec, 0x2C, 0x0000);
-	codec->codec_write(codec, 0x2C, 0xFFFF);
-	codec->codec_write(codec, 0x10, 0x9F1F);
-	codec->codec_write(codec, 0x12, 0x0808);
-	codec->codec_write(codec, 0x14, 0x9F1F);
-	codec->codec_write(codec, 0x16, 0x9F1F);
-	codec->codec_write(codec, 0x18, 0x0404);
-	codec->codec_write(codec, 0x1A, 0x0000);
-	codec->codec_write(codec, 0x1C, 0x0000);
-	codec->codec_write(codec, 0x02, 0x0404);
-	codec->codec_write(codec, 0x04, 0x0808);
-	codec->codec_write(codec, 0x0C, 0x801F);
-	codec->codec_write(codec, 0x0E, 0x801F);
-	return 0;
-}
-#endif
-	
-
-EXPORT_SYMBOL(ac97_probe_codec);
-
-MODULE_LICENSE("GPL");
-