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    Subject[PATCH] SOUND: OSS: Remove Au1550 driver.
    This driver does no longer build since at least 2.6.30 and there is a
    modern ALSA replacement for it. RIP, Rot In Pieces.

    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
    ---

    As discussed earlier in this thread.

    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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      Last update: 2011-05-20 10:37    [W:0.200 / U:119.760 seconds]
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