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Re: [PATCH] SOUND: OSS: Remove Au1550 driver.

To: Ralf Baechle <ralf@linux-mips.org>
Subject: Re: [PATCH] SOUND: OSS: Remove Au1550 driver.
From: Takashi Iwai <tiwai@suse.de>
Date: Fri, 20 May 2011 11:35:51 +0200
Cc: Manuel Lauss <manuel.lauss@googlemail.com>, linux-mips@linux-mips.org, Jaroslav Kysela <perex@perex.cz>, alsa-devel@alsa-project.org, Namhyung Kim <namhyung@gmail.com>, linux-kernel@vger.kernel.org
In-reply-to: <20110520083424.GB15887@linux-mips.org>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <20110519231911.GB10628@linux-mips.org> <s5hoc2x7tsr.wl%tiwai@suse.de> <BANLkTimV4Wg5ZChixp5+0cpu5knrZesSjA@mail.gmail.com> <20110520083424.GB15887@linux-mips.org>
Sender: linux-mips-bounce@linux-mips.org
User-agent: Wanderlust/2.15.6 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (Gojō) APEL/10.7 Emacs/23.2 (x86_64-suse-linux-gnu) MULE/6.0 (HANACHIRUSATO)
At Fri, 20 May 2011 09:34:24 +0100,
Ralf Baechle wrote:
> 
> 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>
> ---
> 
> As discussed earlier in this thread.

Thanks.  I queued this in sound git tree.


Takashi

> 
>  sound/oss/Kconfig       |    4 -
>  sound/oss/Makefile      |    1 -
>  sound/oss/ac97_codec.c  | 1203 --------------------------
>  sound/oss/au1550_ac97.c | 2147 
> -----------------------------------------------
>  4 files changed, 0 insertions(+), 3355 deletions(-)
> 
> diff --git a/sound/oss/Kconfig b/sound/oss/Kconfig
> index 76c0902..6c93e05 100644
> --- a/sound/oss/Kconfig
> +++ b/sound/oss/Kconfig
> @@ -22,10 +22,6 @@ config SOUND_VWSND
>         <file:Documentation/sound/oss/vwsnd> for more info on this driver's
>         capabilities.
>  
> -config SOUND_AU1550_AC97
> -     tristate "Au1550/Au1200 AC97 Sound"
> -     depends on SOC_AU1550 || SOC_AU1200
> -
>  config SOUND_MSNDCLAS
>       tristate "Support for Turtle Beach MultiSound Classic, Tahiti, Monterey"
>       depends on (m || !STANDALONE) && ISA
> diff --git a/sound/oss/Makefile b/sound/oss/Makefile
> index 90ffb99..77f21b6 100644
> --- a/sound/oss/Makefile
> +++ b/sound/oss/Makefile
> @@ -25,7 +25,6 @@ obj-$(CONFIG_SOUND_WAVEARTIST)      += waveartist.o
>  obj-$(CONFIG_SOUND_MSNDCLAS) += msnd.o msnd_classic.o
>  obj-$(CONFIG_SOUND_MSNDPIN)  += msnd.o msnd_pinnacle.o
>  obj-$(CONFIG_SOUND_VWSND)    += vwsnd.o
> -obj-$(CONFIG_SOUND_AU1550_AC97)      += au1550_ac97.o ac97_codec.o
>  obj-$(CONFIG_SOUND_BCM_CS4297A)      += swarm_cs4297a.o
>  
>  obj-$(CONFIG_DMASOUND)               += dmasound/
> diff --git a/sound/oss/ac97_codec.c b/sound/oss/ac97_codec.c
> deleted file mode 100644
> index 0cd23d9..0000000
> --- 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");
> -
> diff --git a/sound/oss/au1550_ac97.c b/sound/oss/au1550_ac97.c
> deleted file mode 100644
> index a8f626d..0000000
> --- 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 */
> 

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