+++ /dev/null
-/*
- * 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");
-
git.openpandora.org / pandora-kernel.git / blobdiff