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Commit e28fb9c6 authored by Ralf Baechle's avatar Ralf Baechle Committed by Takashi Iwai
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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: default avatarRalf Baechle <ralf@linux-mips.org>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 693d92a1
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sound/oss/Kconfig
View file @ e28fb9c6
......@@ -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
......
sound/oss/Makefile
View file @ e28fb9c6
......@@ -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/
......
sound/oss/ac97_codec.c deleted 100644 → 0
View file @ 693d92a1
/*
* 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");
sound/oss/au1550_ac97.c deleted 100644 → 0
View file @ 693d92a1
/*
* 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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