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-rw-r--r--sound/oss/ac97.c432
1 files changed, 0 insertions, 432 deletions
diff --git a/sound/oss/ac97.c b/sound/oss/ac97.c
deleted file mode 100644
index 72cf4ed77937..000000000000
--- a/sound/oss/ac97.c
+++ /dev/null
@@ -1,432 +0,0 @@
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include "ac97.h"
-
-/* Flag for mono controls. */
-#define MO 0
-/* And for stereo. */
-#define ST 1
-
-/* Whether or not the bits in the channel are inverted. */
-#define INV 1
-#define NINV 0
-
-static struct ac97_chn_desc {
- int ac97_regnum;
- int oss_channel;
- int maxval;
- int is_stereo;
- int oss_mask;
- int recordNum;
- u16 regmask;
- int is_inverted;
-} mixerRegs[] = {
- { AC97_MASTER_VOL_STEREO, SOUND_MIXER_VOLUME, 0x3f, ST, SOUND_MASK_VOLUME, 5, 0x0000, INV },
- { AC97_MASTER_VOL_MONO, SOUND_MIXER_PHONEOUT, 0x3f, MO, SOUND_MASK_PHONEOUT, 6, 0x0000, INV },
- { AC97_MASTER_TONE, SOUND_MIXER_TREBLE, 0x0f, MO, SOUND_MASK_TREBLE, -1, 0x00ff, INV },
- { AC97_MASTER_TONE, SOUND_MIXER_BASS, 0x0f, MO, SOUND_MASK_BASS, -1, 0xff00, INV },
- { AC97_PCBEEP_VOL, SOUND_MIXER_SPEAKER, 0x0f, MO, SOUND_MASK_SPEAKER, -1, 0x001e, INV },
- { AC97_PHONE_VOL, SOUND_MIXER_PHONEIN, 0x1f, MO, SOUND_MASK_PHONEIN, 7, 0x0000, INV },
- { AC97_MIC_VOL, SOUND_MIXER_MIC, 0x1f, MO, SOUND_MASK_MIC, 0, 0x0000, INV },
- { AC97_LINEIN_VOL, SOUND_MIXER_LINE, 0x1f, ST, SOUND_MASK_LINE, 4, 0x0000, INV },
- { AC97_CD_VOL, SOUND_MIXER_CD, 0x1f, ST, SOUND_MASK_CD, 1, 0x0000, INV },
- { AC97_VIDEO_VOL, SOUND_MIXER_VIDEO, 0x1f, ST, SOUND_MASK_VIDEO, 2, 0x0000, INV },
- { AC97_AUX_VOL, SOUND_MIXER_LINE1, 0x1f, ST, SOUND_MASK_LINE1, 3, 0x0000, INV },
- { AC97_PCMOUT_VOL, SOUND_MIXER_PCM, 0x1f, ST, SOUND_MASK_PCM, -1, 0x0000, INV },
- { AC97_RECORD_GAIN, SOUND_MIXER_IGAIN, 0x0f, ST, SOUND_MASK_IGAIN, -1, 0x0000, NINV },
- { -1, -1, 0xff, 0, 0, -1, 0x0000, 0 },
-};
-
-static struct ac97_chn_desc *
-ac97_find_chndesc (struct ac97_hwint *dev, int oss_channel)
-{
- int x;
-
- for (x = 0; mixerRegs[x].oss_channel != -1; x++) {
- if (mixerRegs[x].oss_channel == oss_channel)
- return mixerRegs + x;
- }
-
- return NULL;
-}
-
-static inline int
-ac97_is_valid_channel (struct ac97_hwint *dev, struct ac97_chn_desc *chn)
-{
- return (dev->last_written_mixer_values[chn->ac97_regnum / 2]
- != AC97_REG_UNSUPPORTED);
-}
-
-int
-ac97_init (struct ac97_hwint *dev)
-{
- int x;
- int reg0;
-
- /* Clear out the arrays of cached values. */
- for (x = 0; x < AC97_REG_CNT; x++)
- dev->last_written_mixer_values[x] = AC97_REGVAL_UNKNOWN;
-
- for (x = 0; x < SOUND_MIXER_NRDEVICES; x++)
- dev->last_written_OSS_values[x] = AC97_REGVAL_UNKNOWN;
-
- /* Clear the device masks. */
- dev->mixer_devmask = 0;
- dev->mixer_stereomask = 0;
- dev->mixer_recmask = 0;
-
- /* ??? Do a "standard reset" via register 0? */
-
- /* Hardware-dependent reset. */
- if (dev->reset_device (dev))
- return -1;
-
- /* Check the mixer device capabilities. */
- reg0 = dev->read_reg (dev, AC97_RESET);
-
- if (reg0 < 0)
- return -1;
-
- /* Check for support for treble/bass controls. */
- if (! (reg0 & 4)) {
- dev->last_written_mixer_values[AC97_MASTER_TONE / 2]
- = AC97_REG_UNSUPPORTED;
- }
-
- /* ??? There may be other tests here? */
-
- /* Fill in the device masks. */
- for (x = 0; mixerRegs[x].ac97_regnum != -1; x++) {
- if (ac97_is_valid_channel (dev, mixerRegs + x)) {
- dev->mixer_devmask |= mixerRegs[x].oss_mask;
-
- if (mixerRegs[x].is_stereo)
- dev->mixer_stereomask |= mixerRegs[x].oss_mask;
-
- if (mixerRegs[x].recordNum != -1)
- dev->mixer_recmask |= mixerRegs[x].oss_mask;
- }
- }
-
- return 0;
-}
-
-/* Return the contents of register REG; use the cache if the value in it
- is valid. Returns a negative error code on failure. */
-static int
-ac97_get_register (struct ac97_hwint *dev, u8 reg)
-{
- if (reg > 127 || (reg & 1))
- return -EINVAL;
-
- /* See if it's in the cache, or if it's just plain invalid. */
- switch (dev->last_written_mixer_values[reg / 2]) {
- case AC97_REG_UNSUPPORTED:
- return -EINVAL;
- break;
- case AC97_REGVAL_UNKNOWN:
- dev->last_written_mixer_values[reg / 2] = dev->read_reg (dev, reg);
- break;
- default:
- break;
- }
- return dev->last_written_mixer_values[reg / 2];
-}
-
-/* Write VALUE to AC97 register REG, and cache its value in the last-written
- cache. Returns a negative error code on failure, or 0 on success. */
-int
-ac97_put_register (struct ac97_hwint *dev, u8 reg, u16 value)
-{
- if (reg > 127 || (reg & 1))
- return -EINVAL;
-
- if (dev->last_written_mixer_values[reg / 2] == AC97_REG_UNSUPPORTED)
- return -EINVAL;
- else {
- int res = dev->write_reg (dev, reg, value);
- if (res >= 0) {
- dev->last_written_mixer_values[reg / 2] = value;
- return 0;
- }
- else
- return res;
- }
-}
-
-/* Scale VALUE (a value fro 0 to MAXVAL) to a value from 0-100. If
- IS_STEREO is set, VALUE is a stereo value; the left channel value
- is in the lower 8 bits, and the right channel value is in the upper
- 8 bits.
-
- A negative error code is returned on failure, or the unsigned
- scaled value on success. */
-
-static int
-ac97_scale_to_oss_val (int value, int maxval, int is_stereo, int inv)
-{
- /* Muted? */
- if (value & AC97_MUTE)
- return 0;
-
- if (is_stereo)
- return (ac97_scale_to_oss_val (value & 255, maxval, 0, inv) << 8)
- | (ac97_scale_to_oss_val ((value >> 8) & 255, maxval, 0, inv) << 0);
- else {
- int i;
-
- /* Inverted. */
- if (inv)
- value = maxval - value;
-
- i = (value * 100 + (maxval / 2)) / maxval;
- if (i > 100)
- i = 100;
- if (i < 0)
- i = 0;
- return i;
- }
-}
-
-static int
-ac97_scale_from_oss_val (int value, int maxval, int is_stereo, int inv)
-{
- if (is_stereo)
- return (ac97_scale_from_oss_val (value & 255, maxval, 0, inv) << 8)
- | (ac97_scale_from_oss_val ((value >> 8) & 255, maxval, 0, inv) << 0);
- else {
- int i = ((value & 255) * maxval + 50) / 100;
- if (inv)
- i = maxval - i;
- if (i < 0)
- i = 0;
- if (i > maxval)
- i = maxval;
- return i;
- }
-}
-
-static int
-ac97_set_mixer (struct ac97_hwint *dev, int oss_channel, u16 oss_value)
-{
- int scaled_value;
- struct ac97_chn_desc *channel = ac97_find_chndesc (dev, oss_channel);
- int result;
-
- if (channel == NULL)
- return -ENODEV;
- if (! ac97_is_valid_channel (dev, channel))
- return -ENODEV;
- scaled_value = ac97_scale_from_oss_val (oss_value, channel->maxval,
- channel->is_stereo,
- channel->is_inverted);
- if (scaled_value < 0)
- return scaled_value;
-
- if (channel->regmask != 0) {
- int mv;
-
- int oldval = ac97_get_register (dev, channel->ac97_regnum);
- if (oldval < 0)
- return oldval;
-
- for (mv = channel->regmask; ! (mv & 1); mv >>= 1)
- scaled_value <<= 1;
-
- scaled_value &= channel->regmask;
- scaled_value |= (oldval & ~channel->regmask);
- }
- result = ac97_put_register (dev, channel->ac97_regnum, scaled_value);
- if (result == 0)
- dev->last_written_OSS_values[oss_channel] = oss_value;
- return result;
-}
-
-static int
-ac97_get_mixer_scaled (struct ac97_hwint *dev, int oss_channel)
-{
- struct ac97_chn_desc *channel = ac97_find_chndesc (dev, oss_channel);
- int regval;
-
- if (channel == NULL)
- return -ENODEV;
-
- if (! ac97_is_valid_channel (dev, channel))
- return -ENODEV;
-
- regval = ac97_get_register (dev, channel->ac97_regnum);
-
- if (regval < 0)
- return regval;
-
- if (channel->regmask != 0) {
- int mv;
-
- regval &= channel->regmask;
-
- for (mv = channel->regmask; ! (mv & 1); mv >>= 1)
- regval >>= 1;
- }
- return ac97_scale_to_oss_val (regval, channel->maxval,
- channel->is_stereo,
- channel->is_inverted);
-}
-
-static int
-ac97_get_recmask (struct ac97_hwint *dev)
-{
- int recReg = ac97_get_register (dev, AC97_RECORD_SELECT);
-
- if (recReg < 0)
- return recReg;
- else {
- int x;
- for (x = 0; mixerRegs[x].ac97_regnum >= 0; x++) {
- if (mixerRegs[x].recordNum == (recReg & 7))
- return mixerRegs[x].oss_mask;
- }
- return -ENODEV;
- }
-}
-
-static int
-ac97_set_recmask (struct ac97_hwint *dev, int oss_recmask)
-{
- int x;
-
- if (oss_recmask == 0)
- oss_recmask = SOUND_MIXER_MIC;
-
- for (x = 0; mixerRegs[x].ac97_regnum >= 0; x++) {
- if ((mixerRegs[x].recordNum >= 0)
- && (oss_recmask & mixerRegs[x].oss_mask))
- break;
- }
- if (mixerRegs[x].ac97_regnum < 0)
- return -ENODEV;
- else {
- int regval = (mixerRegs[x].recordNum << 8) | mixerRegs[x].recordNum;
- int res = ac97_put_register (dev, AC97_RECORD_SELECT, regval);
- if (res == 0)
- return ac97_get_recmask (dev);
- else
- return res;
- }
-}
-
-/* Set the mixer DEV to the list of values in VALUE_LIST. Return 0 on
- success, or a negative error code. */
-int
-ac97_set_values (struct ac97_hwint *dev,
- struct ac97_mixer_value_list *value_list)
-{
- int x;
-
- for (x = 0; value_list[x].oss_channel != -1; x++) {
- int chnum = value_list[x].oss_channel;
- struct ac97_chn_desc *chent = ac97_find_chndesc (dev, chnum);
- if (chent != NULL) {
- u16 val;
- int res;
-
- if (chent->is_stereo)
- val = (value_list[x].value.stereo.right << 8)
- | value_list[x].value.stereo.left;
- else {
- /* We do this so the returned value looks OK in the
- mixer app. It's not necessary otherwise. */
- val = (value_list[x].value.mono << 8)
- | value_list[x].value.mono;
- }
- res = ac97_set_mixer (dev, chnum, val);
- if (res < 0)
- return res;
- }
- else
- return -ENODEV;
- }
- return 0;
-}
-
-int
-ac97_mixer_ioctl (struct ac97_hwint *dev, unsigned int cmd, void __user *arg)
-{
- int ret;
-
- switch (cmd) {
- case SOUND_MIXER_READ_RECSRC:
- ret = ac97_get_recmask (dev);
- break;
-
- case SOUND_MIXER_WRITE_RECSRC:
- {
- if (get_user (ret, (int __user *) arg))
- ret = -EFAULT;
- else
- ret = ac97_set_recmask (dev, ret);
- }
- break;
-
- case SOUND_MIXER_READ_CAPS:
- ret = SOUND_CAP_EXCL_INPUT;
- break;
-
- case SOUND_MIXER_READ_DEVMASK:
- ret = dev->mixer_devmask;
- break;
-
- case SOUND_MIXER_READ_RECMASK:
- ret = dev->mixer_recmask;
- break;
-
- case SOUND_MIXER_READ_STEREODEVS:
- ret = dev->mixer_stereomask;
- break;
-
- default:
- /* Read or write request. */
- ret = -EINVAL;
- if (_IOC_TYPE (cmd) == 'M') {
- int dir = _SIOC_DIR (cmd);
- int channel = _IOC_NR (cmd);
-
- if (channel >= 0 && channel < SOUND_MIXER_NRDEVICES) {
- ret = 0;
- if (dir & _SIOC_WRITE) {
- int val;
- if (get_user (val, (int __user *) arg) == 0)
- ret = ac97_set_mixer (dev, channel, val);
- else
- ret = -EFAULT;
- }
- if (ret >= 0 && (dir & _SIOC_READ)) {
- if (dev->last_written_OSS_values[channel]
- == AC97_REGVAL_UNKNOWN)
- dev->last_written_OSS_values[channel]
- = ac97_get_mixer_scaled (dev, channel);
- ret = dev->last_written_OSS_values[channel];
- }
- }
- }
- break;
- }
-
- if (ret < 0)
- return ret;
- else
- return put_user(ret, (int __user *) arg);
-}
-
-EXPORT_SYMBOL(ac97_init);
-EXPORT_SYMBOL(ac97_set_values);
-EXPORT_SYMBOL(ac97_put_register);
-EXPORT_SYMBOL(ac97_mixer_ioctl);
-MODULE_LICENSE("GPL");
-
-
-/*
- * Local variables:
- * c-basic-offset: 4
- * End:
- */
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