[funini.com] -> [kei@sodan] -> Kernel Reading

root/sound/pci/oxygen/oxygen_mixer.c

/* [<][>][^][v][top][bottom][index][help] */

DEFINITIONS

This source file includes following definitions.
  1. dac_volume_info
  2. dac_volume_get
  3. dac_volume_put
  4. dac_mute_get
  5. dac_mute_put
  6. upmix_info
  7. upmix_get
  8. oxygen_update_dac_routing
  9. upmix_put
  10. spdif_switch_get
  11. oxygen_spdif_rate
  12. oxygen_update_spdif_source
  13. spdif_switch_put
  14. spdif_info
  15. oxygen_to_iec958
  16. iec958_to_oxygen
  17. write_spdif_bits
  18. spdif_default_get
  19. spdif_default_put
  20. spdif_mask_get
  21. spdif_pcm_get
  22. spdif_pcm_put
  23. spdif_input_mask_get
  24. spdif_input_default_get
  25. spdif_loopback_get
  26. spdif_loopback_put
  27. monitor_volume_info
  28. monitor_get
  29. monitor_put
  30. ac97_switch_get
  31. mute_ac97_ctl
  32. ac97_switch_put
  33. ac97_volume_info
  34. ac97_volume_get
  35. ac97_volume_put
  36. ac97_fp_rec_volume_info
  37. ac97_fp_rec_volume_get
  38. ac97_fp_rec_volume_put
  39. oxygen_any_ctl_free
  40. add_controls
  41. oxygen_mixer_init

/*
 * C-Media CMI8788 driver - mixer code
 *
 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
 *
 *
 *  This driver is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License, version 2.
 *
 *  This driver 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 driver; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <linux/mutex.h>
#include <sound/ac97_codec.h>
#include <sound/asoundef.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include "oxygen.h"
#include "cm9780.h"

static int dac_volume_info(struct snd_kcontrol *ctl,
                           struct snd_ctl_elem_info *info)
{
        struct oxygen *chip = ctl->private_data;

        info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
        info->count = chip->model.dac_channels;
        info->value.integer.min = chip->model.dac_volume_min;
        info->value.integer.max = chip->model.dac_volume_max;
        return 0;
}

static int dac_volume_get(struct snd_kcontrol *ctl,
                          struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        unsigned int i;

        mutex_lock(&chip->mutex);
        for (i = 0; i < chip->model.dac_channels; ++i)
                value->value.integer.value[i] = chip->dac_volume[i];
        mutex_unlock(&chip->mutex);
        return 0;
}

static int dac_volume_put(struct snd_kcontrol *ctl,
                          struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        unsigned int i;
        int changed;

        changed = 0;
        mutex_lock(&chip->mutex);
        for (i = 0; i < chip->model.dac_channels; ++i)
                if (value->value.integer.value[i] != chip->dac_volume[i]) {
                        chip->dac_volume[i] = value->value.integer.value[i];
                        changed = 1;
                }
        if (changed)
                chip->model.update_dac_volume(chip);
        mutex_unlock(&chip->mutex);
        return changed;
}

static int dac_mute_get(struct snd_kcontrol *ctl,
                        struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;

        mutex_lock(&chip->mutex);
        value->value.integer.value[0] = !chip->dac_mute;
        mutex_unlock(&chip->mutex);
        return 0;
}

static int dac_mute_put(struct snd_kcontrol *ctl,
                          struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        int changed;

        mutex_lock(&chip->mutex);
        changed = !value->value.integer.value[0] != chip->dac_mute;
        if (changed) {
                chip->dac_mute = !value->value.integer.value[0];
                chip->model.update_dac_mute(chip);
        }
        mutex_unlock(&chip->mutex);
        return changed;
}

static int upmix_info(struct snd_kcontrol *ctl, struct snd_ctl_elem_info *info)
{
        static const char *const names[3] = {
                "Front", "Front+Surround", "Front+Surround+Back"
        };
        struct oxygen *chip = ctl->private_data;
        unsigned int count = 2 + (chip->model.dac_channels == 8);

        info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
        info->count = 1;
        info->value.enumerated.items = count;
        if (info->value.enumerated.item >= count)
                info->value.enumerated.item = count - 1;
        strcpy(info->value.enumerated.name, names[info->value.enumerated.item]);
        return 0;
}

static int upmix_get(struct snd_kcontrol *ctl, struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;

        mutex_lock(&chip->mutex);
        value->value.enumerated.item[0] = chip->dac_routing;
        mutex_unlock(&chip->mutex);
        return 0;
}

void oxygen_update_dac_routing(struct oxygen *chip)
{
        /* DAC 0: front, DAC 1: surround, DAC 2: center/LFE, DAC 3: back */
        static const unsigned int reg_values[3] = {
                /* stereo -> front */
                (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
                (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
                (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
                (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT),
                /* stereo -> front+surround */
                (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
                (0 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
                (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
                (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT),
                /* stereo -> front+surround+back */
                (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
                (0 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
                (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
                (0 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT),
        };
        u8 channels;
        unsigned int reg_value;

        channels = oxygen_read8(chip, OXYGEN_PLAY_CHANNELS) &
                OXYGEN_PLAY_CHANNELS_MASK;
        if (channels == OXYGEN_PLAY_CHANNELS_2)
                reg_value = reg_values[chip->dac_routing];
        else if (channels == OXYGEN_PLAY_CHANNELS_8)
                /* in 7.1 mode, "rear" channels go to the "back" jack */
                reg_value = (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
                            (3 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
                            (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
                            (1 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT);
        else
                reg_value = (0 << OXYGEN_PLAY_DAC0_SOURCE_SHIFT) |
                            (1 << OXYGEN_PLAY_DAC1_SOURCE_SHIFT) |
                            (2 << OXYGEN_PLAY_DAC2_SOURCE_SHIFT) |
                            (3 << OXYGEN_PLAY_DAC3_SOURCE_SHIFT);
        oxygen_write16_masked(chip, OXYGEN_PLAY_ROUTING, reg_value,
                              OXYGEN_PLAY_DAC0_SOURCE_MASK |
                              OXYGEN_PLAY_DAC1_SOURCE_MASK |
                              OXYGEN_PLAY_DAC2_SOURCE_MASK |
                              OXYGEN_PLAY_DAC3_SOURCE_MASK);
}

static int upmix_put(struct snd_kcontrol *ctl, struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        unsigned int count = 2 + (chip->model.dac_channels == 8);
        int changed;

        mutex_lock(&chip->mutex);
        changed = value->value.enumerated.item[0] != chip->dac_routing;
        if (changed) {
                chip->dac_routing = min(value->value.enumerated.item[0],
                                        count - 1);
                spin_lock_irq(&chip->reg_lock);
                oxygen_update_dac_routing(chip);
                spin_unlock_irq(&chip->reg_lock);
        }
        mutex_unlock(&chip->mutex);
        return changed;
}

static int spdif_switch_get(struct snd_kcontrol *ctl,
                            struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;

        mutex_lock(&chip->mutex);
        value->value.integer.value[0] = chip->spdif_playback_enable;
        mutex_unlock(&chip->mutex);
        return 0;
}

static unsigned int oxygen_spdif_rate(unsigned int oxygen_rate)
{
        switch (oxygen_rate) {
        case OXYGEN_RATE_32000:
                return IEC958_AES3_CON_FS_32000 << OXYGEN_SPDIF_CS_RATE_SHIFT;
        case OXYGEN_RATE_44100:
                return IEC958_AES3_CON_FS_44100 << OXYGEN_SPDIF_CS_RATE_SHIFT;
        default: /* OXYGEN_RATE_48000 */
                return IEC958_AES3_CON_FS_48000 << OXYGEN_SPDIF_CS_RATE_SHIFT;
        case OXYGEN_RATE_64000:
                return 0xb << OXYGEN_SPDIF_CS_RATE_SHIFT;
        case OXYGEN_RATE_88200:
                return IEC958_AES3_CON_FS_88200 << OXYGEN_SPDIF_CS_RATE_SHIFT;
        case OXYGEN_RATE_96000:
                return IEC958_AES3_CON_FS_96000 << OXYGEN_SPDIF_CS_RATE_SHIFT;
        case OXYGEN_RATE_176400:
                return IEC958_AES3_CON_FS_176400 << OXYGEN_SPDIF_CS_RATE_SHIFT;
        case OXYGEN_RATE_192000:
                return IEC958_AES3_CON_FS_192000 << OXYGEN_SPDIF_CS_RATE_SHIFT;
        }
}

void oxygen_update_spdif_source(struct oxygen *chip)
{
        u32 old_control, new_control;
        u16 old_routing, new_routing;
        unsigned int oxygen_rate;

        old_control = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
        old_routing = oxygen_read16(chip, OXYGEN_PLAY_ROUTING);
        if (chip->pcm_active & (1 << PCM_SPDIF)) {
                new_control = old_control | OXYGEN_SPDIF_OUT_ENABLE;
                new_routing = (old_routing & ~OXYGEN_PLAY_SPDIF_MASK)
                        | OXYGEN_PLAY_SPDIF_SPDIF;
                oxygen_rate = (old_control >> OXYGEN_SPDIF_OUT_RATE_SHIFT)
                        & OXYGEN_I2S_RATE_MASK;
                /* S/PDIF rate was already set by the caller */
        } else if ((chip->pcm_active & (1 << PCM_MULTICH)) &&
                   chip->spdif_playback_enable) {
                new_routing = (old_routing & ~OXYGEN_PLAY_SPDIF_MASK)
                        | OXYGEN_PLAY_SPDIF_MULTICH_01;
                oxygen_rate = oxygen_read16(chip, OXYGEN_I2S_MULTICH_FORMAT)
                        & OXYGEN_I2S_RATE_MASK;
                new_control = (old_control & ~OXYGEN_SPDIF_OUT_RATE_MASK) |
                        (oxygen_rate << OXYGEN_SPDIF_OUT_RATE_SHIFT) |
                        OXYGEN_SPDIF_OUT_ENABLE;
        } else {
                new_control = old_control & ~OXYGEN_SPDIF_OUT_ENABLE;
                new_routing = old_routing;
                oxygen_rate = OXYGEN_RATE_44100;
        }
        if (old_routing != new_routing) {
                oxygen_write32(chip, OXYGEN_SPDIF_CONTROL,
                               new_control & ~OXYGEN_SPDIF_OUT_ENABLE);
                oxygen_write16(chip, OXYGEN_PLAY_ROUTING, new_routing);
        }
        if (new_control & OXYGEN_SPDIF_OUT_ENABLE)
                oxygen_write32(chip, OXYGEN_SPDIF_OUTPUT_BITS,
                               oxygen_spdif_rate(oxygen_rate) |
                               ((chip->pcm_active & (1 << PCM_SPDIF)) ?
                                chip->spdif_pcm_bits : chip->spdif_bits));
        oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, new_control);
}

static int spdif_switch_put(struct snd_kcontrol *ctl,
                            struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        int changed;

        mutex_lock(&chip->mutex);
        changed = value->value.integer.value[0] != chip->spdif_playback_enable;
        if (changed) {
                chip->spdif_playback_enable = !!value->value.integer.value[0];
                spin_lock_irq(&chip->reg_lock);
                oxygen_update_spdif_source(chip);
                spin_unlock_irq(&chip->reg_lock);
        }
        mutex_unlock(&chip->mutex);
        return changed;
}

static int spdif_info(struct snd_kcontrol *ctl, struct snd_ctl_elem_info *info)
{
        info->type = SNDRV_CTL_ELEM_TYPE_IEC958;
        info->count = 1;
        return 0;
}

static void oxygen_to_iec958(u32 bits, struct snd_ctl_elem_value *value)
{
        value->value.iec958.status[0] =
                bits & (OXYGEN_SPDIF_NONAUDIO | OXYGEN_SPDIF_C |
                        OXYGEN_SPDIF_PREEMPHASIS);
        value->value.iec958.status[1] = /* category and original */
                bits >> OXYGEN_SPDIF_CATEGORY_SHIFT;
}

static u32 iec958_to_oxygen(struct snd_ctl_elem_value *value)
{
        u32 bits;

        bits = value->value.iec958.status[0] &
                (OXYGEN_SPDIF_NONAUDIO | OXYGEN_SPDIF_C |
                 OXYGEN_SPDIF_PREEMPHASIS);
        bits |= value->value.iec958.status[1] << OXYGEN_SPDIF_CATEGORY_SHIFT;
        if (bits & OXYGEN_SPDIF_NONAUDIO)
                bits |= OXYGEN_SPDIF_V;
        return bits;
}

static inline void write_spdif_bits(struct oxygen *chip, u32 bits)
{
        oxygen_write32_masked(chip, OXYGEN_SPDIF_OUTPUT_BITS, bits,
                              OXYGEN_SPDIF_NONAUDIO |
                              OXYGEN_SPDIF_C |
                              OXYGEN_SPDIF_PREEMPHASIS |
                              OXYGEN_SPDIF_CATEGORY_MASK |
                              OXYGEN_SPDIF_ORIGINAL |
                              OXYGEN_SPDIF_V);
}

static int spdif_default_get(struct snd_kcontrol *ctl,
                             struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;

        mutex_lock(&chip->mutex);
        oxygen_to_iec958(chip->spdif_bits, value);
        mutex_unlock(&chip->mutex);
        return 0;
}

static int spdif_default_put(struct snd_kcontrol *ctl,
                             struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        u32 new_bits;
        int changed;

        new_bits = iec958_to_oxygen(value);
        mutex_lock(&chip->mutex);
        changed = new_bits != chip->spdif_bits;
        if (changed) {
                chip->spdif_bits = new_bits;
                if (!(chip->pcm_active & (1 << PCM_SPDIF)))
                        write_spdif_bits(chip, new_bits);
        }
        mutex_unlock(&chip->mutex);
        return changed;
}

static int spdif_mask_get(struct snd_kcontrol *ctl,
                          struct snd_ctl_elem_value *value)
{
        value->value.iec958.status[0] = IEC958_AES0_NONAUDIO |
                IEC958_AES0_CON_NOT_COPYRIGHT | IEC958_AES0_CON_EMPHASIS;
        value->value.iec958.status[1] =
                IEC958_AES1_CON_CATEGORY | IEC958_AES1_CON_ORIGINAL;
        return 0;
}

static int spdif_pcm_get(struct snd_kcontrol *ctl,
                         struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;

        mutex_lock(&chip->mutex);
        oxygen_to_iec958(chip->spdif_pcm_bits, value);
        mutex_unlock(&chip->mutex);
        return 0;
}

static int spdif_pcm_put(struct snd_kcontrol *ctl,
                         struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        u32 new_bits;
        int changed;

        new_bits = iec958_to_oxygen(value);
        mutex_lock(&chip->mutex);
        changed = new_bits != chip->spdif_pcm_bits;
        if (changed) {
                chip->spdif_pcm_bits = new_bits;
                if (chip->pcm_active & (1 << PCM_SPDIF))
                        write_spdif_bits(chip, new_bits);
        }
        mutex_unlock(&chip->mutex);
        return changed;
}

static int spdif_input_mask_get(struct snd_kcontrol *ctl,
                                struct snd_ctl_elem_value *value)
{
        value->value.iec958.status[0] = 0xff;
        value->value.iec958.status[1] = 0xff;
        value->value.iec958.status[2] = 0xff;
        value->value.iec958.status[3] = 0xff;
        return 0;
}

static int spdif_input_default_get(struct snd_kcontrol *ctl,
                                   struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        u32 bits;

        bits = oxygen_read32(chip, OXYGEN_SPDIF_INPUT_BITS);
        value->value.iec958.status[0] = bits;
        value->value.iec958.status[1] = bits >> 8;
        value->value.iec958.status[2] = bits >> 16;
        value->value.iec958.status[3] = bits >> 24;
        return 0;
}

static int spdif_loopback_get(struct snd_kcontrol *ctl,
                              struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;

        value->value.integer.value[0] =
                !!(oxygen_read32(chip, OXYGEN_SPDIF_CONTROL)
                   & OXYGEN_SPDIF_LOOPBACK);
        return 0;
}

static int spdif_loopback_put(struct snd_kcontrol *ctl,
                              struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        u32 oldreg, newreg;
        int changed;

        spin_lock_irq(&chip->reg_lock);
        oldreg = oxygen_read32(chip, OXYGEN_SPDIF_CONTROL);
        if (value->value.integer.value[0])
                newreg = oldreg | OXYGEN_SPDIF_LOOPBACK;
        else
                newreg = oldreg & ~OXYGEN_SPDIF_LOOPBACK;
        changed = newreg != oldreg;
        if (changed)
                oxygen_write32(chip, OXYGEN_SPDIF_CONTROL, newreg);
        spin_unlock_irq(&chip->reg_lock);
        return changed;
}

static int monitor_volume_info(struct snd_kcontrol *ctl,
                               struct snd_ctl_elem_info *info)
{
        info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
        info->count = 1;
        info->value.integer.min = 0;
        info->value.integer.max = 1;
        return 0;
}

static int monitor_get(struct snd_kcontrol *ctl,
                       struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        u8 bit = ctl->private_value;
        int invert = ctl->private_value & (1 << 8);

        value->value.integer.value[0] =
                !!invert ^ !!(oxygen_read8(chip, OXYGEN_ADC_MONITOR) & bit);
        return 0;
}

static int monitor_put(struct snd_kcontrol *ctl,
                       struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        u8 bit = ctl->private_value;
        int invert = ctl->private_value & (1 << 8);
        u8 oldreg, newreg;
        int changed;

        spin_lock_irq(&chip->reg_lock);
        oldreg = oxygen_read8(chip, OXYGEN_ADC_MONITOR);
        if ((!!value->value.integer.value[0] ^ !!invert) != 0)
                newreg = oldreg | bit;
        else
                newreg = oldreg & ~bit;
        changed = newreg != oldreg;
        if (changed)
                oxygen_write8(chip, OXYGEN_ADC_MONITOR, newreg);
        spin_unlock_irq(&chip->reg_lock);
        return changed;
}

static int ac97_switch_get(struct snd_kcontrol *ctl,
                           struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        unsigned int codec = (ctl->private_value >> 24) & 1;
        unsigned int index = ctl->private_value & 0xff;
        unsigned int bitnr = (ctl->private_value >> 8) & 0xff;
        int invert = ctl->private_value & (1 << 16);
        u16 reg;

        mutex_lock(&chip->mutex);
        reg = oxygen_read_ac97(chip, codec, index);
        mutex_unlock(&chip->mutex);
        if (!(reg & (1 << bitnr)) ^ !invert)
                value->value.integer.value[0] = 1;
        else
                value->value.integer.value[0] = 0;
        return 0;
}

static void mute_ac97_ctl(struct oxygen *chip, unsigned int control)
{
        unsigned int priv_idx;
        u16 value;

        if (!chip->controls[control])
                return;
        priv_idx = chip->controls[control]->private_value & 0xff;
        value = oxygen_read_ac97(chip, 0, priv_idx);
        if (!(value & 0x8000)) {
                oxygen_write_ac97(chip, 0, priv_idx, value | 0x8000);
                if (chip->model.ac97_switch)
                        chip->model.ac97_switch(chip, priv_idx, 0x8000);
                snd_ctl_notify(chip->card, SNDRV_CTL_EVENT_MASK_VALUE,
                               &chip->controls[control]->id);
        }
}

static int ac97_switch_put(struct snd_kcontrol *ctl,
                           struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        unsigned int codec = (ctl->private_value >> 24) & 1;
        unsigned int index = ctl->private_value & 0xff;
        unsigned int bitnr = (ctl->private_value >> 8) & 0xff;
        int invert = ctl->private_value & (1 << 16);
        u16 oldreg, newreg;
        int change;

        mutex_lock(&chip->mutex);
        oldreg = oxygen_read_ac97(chip, codec, index);
        newreg = oldreg;
        if (!value->value.integer.value[0] ^ !invert)
                newreg |= 1 << bitnr;
        else
                newreg &= ~(1 << bitnr);
        change = newreg != oldreg;
        if (change) {
                oxygen_write_ac97(chip, codec, index, newreg);
                if (codec == 0 && chip->model.ac97_switch)
                        chip->model.ac97_switch(chip, index, newreg & 0x8000);
                if (index == AC97_LINE) {
                        oxygen_write_ac97_masked(chip, 0, CM9780_GPIO_STATUS,
                                                 newreg & 0x8000 ?
                                                 CM9780_GPO0 : 0, CM9780_GPO0);
                        if (!(newreg & 0x8000)) {
                                mute_ac97_ctl(chip, CONTROL_MIC_CAPTURE_SWITCH);
                                mute_ac97_ctl(chip, CONTROL_CD_CAPTURE_SWITCH);
                                mute_ac97_ctl(chip, CONTROL_AUX_CAPTURE_SWITCH);
                        }
                } else if ((index == AC97_MIC || index == AC97_CD ||
                            index == AC97_VIDEO || index == AC97_AUX) &&
                           bitnr == 15 && !(newreg & 0x8000)) {
                        mute_ac97_ctl(chip, CONTROL_LINE_CAPTURE_SWITCH);
                        oxygen_write_ac97_masked(chip, 0, CM9780_GPIO_STATUS,
                                                 CM9780_GPO0, CM9780_GPO0);
                }
        }
        mutex_unlock(&chip->mutex);
        return change;
}

static int ac97_volume_info(struct snd_kcontrol *ctl,
                            struct snd_ctl_elem_info *info)
{
        info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
        info->count = 2;
        info->value.integer.min = 0;
        info->value.integer.max = 0x1f;
        return 0;
}

static int ac97_volume_get(struct snd_kcontrol *ctl,
                           struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        unsigned int codec = (ctl->private_value >> 24) & 1;
        unsigned int index = ctl->private_value & 0xff;
        u16 reg;

        mutex_lock(&chip->mutex);
        reg = oxygen_read_ac97(chip, codec, index);
        mutex_unlock(&chip->mutex);
        value->value.integer.value[0] = 31 - (reg & 0x1f);
        value->value.integer.value[1] = 31 - ((reg >> 8) & 0x1f);
        return 0;
}

static int ac97_volume_put(struct snd_kcontrol *ctl,
                           struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        unsigned int codec = (ctl->private_value >> 24) & 1;
        unsigned int index = ctl->private_value & 0xff;
        u16 oldreg, newreg;
        int change;

        mutex_lock(&chip->mutex);
        oldreg = oxygen_read_ac97(chip, codec, index);
        newreg = oldreg;
        newreg = (newreg & ~0x1f) |
                (31 - (value->value.integer.value[0] & 0x1f));
        newreg = (newreg & ~0x1f00) |
                ((31 - (value->value.integer.value[0] & 0x1f)) << 8);
        change = newreg != oldreg;
        if (change)
                oxygen_write_ac97(chip, codec, index, newreg);
        mutex_unlock(&chip->mutex);
        return change;
}

static int ac97_fp_rec_volume_info(struct snd_kcontrol *ctl,
                                   struct snd_ctl_elem_info *info)
{
        info->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
        info->count = 2;
        info->value.integer.min = 0;
        info->value.integer.max = 7;
        return 0;
}

static int ac97_fp_rec_volume_get(struct snd_kcontrol *ctl,
                                  struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        u16 reg;

        mutex_lock(&chip->mutex);
        reg = oxygen_read_ac97(chip, 1, AC97_REC_GAIN);
        mutex_unlock(&chip->mutex);
        value->value.integer.value[0] = reg & 7;
        value->value.integer.value[1] = (reg >> 8) & 7;
        return 0;
}

static int ac97_fp_rec_volume_put(struct snd_kcontrol *ctl,
                                  struct snd_ctl_elem_value *value)
{
        struct oxygen *chip = ctl->private_data;
        u16 oldreg, newreg;
        int change;

        mutex_lock(&chip->mutex);
        oldreg = oxygen_read_ac97(chip, 1, AC97_REC_GAIN);
        newreg = oldreg & ~0x0707;
        newreg = newreg | (value->value.integer.value[0] & 7);
        newreg = newreg | ((value->value.integer.value[0] & 7) << 8);
        change = newreg != oldreg;
        if (change)
                oxygen_write_ac97(chip, 1, AC97_REC_GAIN, newreg);
        mutex_unlock(&chip->mutex);
        return change;
}

#define AC97_SWITCH(xname, codec, index, bitnr, invert) { \
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
                .name = xname, \
                .info = snd_ctl_boolean_mono_info, \
                .get = ac97_switch_get, \
                .put = ac97_switch_put, \
                .private_value = ((codec) << 24) | ((invert) << 16) | \
                                 ((bitnr) << 8) | (index), \
        }
#define AC97_VOLUME(xname, codec, index) { \
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER, \
                .name = xname, \
                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE | \
                          SNDRV_CTL_ELEM_ACCESS_TLV_READ, \
                .info = ac97_volume_info, \
                .get = ac97_volume_get, \
                .put = ac97_volume_put, \
                .tlv = { .p = ac97_db_scale, }, \
                .private_value = ((codec) << 24) | (index), \
        }

static DECLARE_TLV_DB_SCALE(monitor_db_scale, -1000, 1000, 0);
static DECLARE_TLV_DB_SCALE(ac97_db_scale, -3450, 150, 0);
static DECLARE_TLV_DB_SCALE(ac97_rec_db_scale, 0, 150, 0);

static const struct snd_kcontrol_new controls[] = {
        {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .name = "Master Playback Volume",
                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
                .info = dac_volume_info,
                .get = dac_volume_get,
                .put = dac_volume_put,
        },
        {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .name = "Master Playback Switch",
                .info = snd_ctl_boolean_mono_info,
                .get = dac_mute_get,
                .put = dac_mute_put,
        },
        {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .name = "Stereo Upmixing",
                .info = upmix_info,
                .get = upmix_get,
                .put = upmix_put,
        },
        {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
                .info = snd_ctl_boolean_mono_info,
                .get = spdif_switch_get,
                .put = spdif_switch_put,
        },
        {
                .iface = SNDRV_CTL_ELEM_IFACE_PCM,
                .device = 1,
                .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, DEFAULT),
                .info = spdif_info,
                .get = spdif_default_get,
                .put = spdif_default_put,
        },
        {
                .iface = SNDRV_CTL_ELEM_IFACE_PCM,
                .device = 1,
                .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, CON_MASK),
                .access = SNDRV_CTL_ELEM_ACCESS_READ,
                .info = spdif_info,
                .get = spdif_mask_get,
        },
        {
                .iface = SNDRV_CTL_ELEM_IFACE_PCM,
                .device = 1,
                .name = SNDRV_CTL_NAME_IEC958("", PLAYBACK, PCM_STREAM),
                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
                          SNDRV_CTL_ELEM_ACCESS_INACTIVE,
                .info = spdif_info,
                .get = spdif_pcm_get,
                .put = spdif_pcm_put,
        },
};

static const struct snd_kcontrol_new spdif_input_controls[] = {
        {
                .iface = SNDRV_CTL_ELEM_IFACE_PCM,
                .device = 1,
                .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, MASK),
                .access = SNDRV_CTL_ELEM_ACCESS_READ,
                .info = spdif_info,
                .get = spdif_input_mask_get,
        },
        {
                .iface = SNDRV_CTL_ELEM_IFACE_PCM,
                .device = 1,
                .name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
                .access = SNDRV_CTL_ELEM_ACCESS_READ,
                .info = spdif_info,
                .get = spdif_input_default_get,
        },
        {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .name = SNDRV_CTL_NAME_IEC958("Loopback ", NONE, SWITCH),
                .info = snd_ctl_boolean_mono_info,
                .get = spdif_loopback_get,
                .put = spdif_loopback_put,
        },
};

static const struct {
        unsigned int pcm_dev;
        struct snd_kcontrol_new controls[2];
} monitor_controls[] = {
        {
                .pcm_dev = CAPTURE_0_FROM_I2S_1,
                .controls = {
                        {
                                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                                .name = "Analog Input Monitor Switch",
                                .info = snd_ctl_boolean_mono_info,
                                .get = monitor_get,
                                .put = monitor_put,
                                .private_value = OXYGEN_ADC_MONITOR_A,
                        },
                        {
                                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                                .name = "Analog Input Monitor Volume",
                                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
                                          SNDRV_CTL_ELEM_ACCESS_TLV_READ,
                                .info = monitor_volume_info,
                                .get = monitor_get,
                                .put = monitor_put,
                                .private_value = OXYGEN_ADC_MONITOR_A_HALF_VOL
                                                | (1 << 8),
                                .tlv = { .p = monitor_db_scale, },
                        },
                },
        },
        {
                .pcm_dev = CAPTURE_0_FROM_I2S_2,
                .controls = {
                        {
                                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                                .name = "Analog Input Monitor Switch",
                                .info = snd_ctl_boolean_mono_info,
                                .get = monitor_get,
                                .put = monitor_put,
                                .private_value = OXYGEN_ADC_MONITOR_B,
                        },
                        {
                                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                                .name = "Analog Input Monitor Volume",
                                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
                                          SNDRV_CTL_ELEM_ACCESS_TLV_READ,
                                .info = monitor_volume_info,
                                .get = monitor_get,
                                .put = monitor_put,
                                .private_value = OXYGEN_ADC_MONITOR_B_HALF_VOL
                                                | (1 << 8),
                                .tlv = { .p = monitor_db_scale, },
                        },
                },
        },
        {
                .pcm_dev = CAPTURE_2_FROM_I2S_2,
                .controls = {
                        {
                                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                                .name = "Analog Input Monitor Switch",
                                .index = 1,
                                .info = snd_ctl_boolean_mono_info,
                                .get = monitor_get,
                                .put = monitor_put,
                                .private_value = OXYGEN_ADC_MONITOR_B,
                        },
                        {
                                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                                .name = "Analog Input Monitor Volume",
                                .index = 1,
                                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
                                          SNDRV_CTL_ELEM_ACCESS_TLV_READ,
                                .info = monitor_volume_info,
                                .get = monitor_get,
                                .put = monitor_put,
                                .private_value = OXYGEN_ADC_MONITOR_B_HALF_VOL
                                                | (1 << 8),
                                .tlv = { .p = monitor_db_scale, },
                        },
                },
        },
        {
                .pcm_dev = CAPTURE_1_FROM_SPDIF,
                .controls = {
                        {
                                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                                .name = "Digital Input Monitor Switch",
                                .info = snd_ctl_boolean_mono_info,
                                .get = monitor_get,
                                .put = monitor_put,
                                .private_value = OXYGEN_ADC_MONITOR_C,
                        },
                        {
                                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                                .name = "Digital Input Monitor Volume",
                                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
                                          SNDRV_CTL_ELEM_ACCESS_TLV_READ,
                                .info = monitor_volume_info,
                                .get = monitor_get,
                                .put = monitor_put,
                                .private_value = OXYGEN_ADC_MONITOR_C_HALF_VOL
                                                | (1 << 8),
                                .tlv = { .p = monitor_db_scale, },
                        },
                },
        },
};

static const struct snd_kcontrol_new ac97_controls[] = {
        AC97_VOLUME("Mic Capture Volume", 0, AC97_MIC),
        AC97_SWITCH("Mic Capture Switch", 0, AC97_MIC, 15, 1),
        AC97_SWITCH("Mic Boost (+20dB)", 0, AC97_MIC, 6, 0),
        AC97_SWITCH("Line Capture Switch", 0, AC97_LINE, 15, 1),
        AC97_VOLUME("CD Capture Volume", 0, AC97_CD),
        AC97_SWITCH("CD Capture Switch", 0, AC97_CD, 15, 1),
        AC97_VOLUME("Aux Capture Volume", 0, AC97_AUX),
        AC97_SWITCH("Aux Capture Switch", 0, AC97_AUX, 15, 1),
};

static const struct snd_kcontrol_new ac97_fp_controls[] = {
        AC97_VOLUME("Front Panel Playback Volume", 1, AC97_HEADPHONE),
        AC97_SWITCH("Front Panel Playback Switch", 1, AC97_HEADPHONE, 15, 1),
        {
                .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
                .name = "Front Panel Capture Volume",
                .access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
                          SNDRV_CTL_ELEM_ACCESS_TLV_READ,
                .info = ac97_fp_rec_volume_info,
                .get = ac97_fp_rec_volume_get,
                .put = ac97_fp_rec_volume_put,
                .tlv = { .p = ac97_rec_db_scale, },
        },
        AC97_SWITCH("Front Panel Capture Switch", 1, AC97_REC_GAIN, 15, 1),
};

static void oxygen_any_ctl_free(struct snd_kcontrol *ctl)
{
        struct oxygen *chip = ctl->private_data;
        unsigned int i;

        /* I'm too lazy to write a function for each control :-) */
        for (i = 0; i < ARRAY_SIZE(chip->controls); ++i)
                chip->controls[i] = NULL;
}

static int add_controls(struct oxygen *chip,
                        const struct snd_kcontrol_new controls[],
                        unsigned int count)
{
        static const char *const known_ctl_names[CONTROL_COUNT] = {
                [CONTROL_SPDIF_PCM] =
                        SNDRV_CTL_NAME_IEC958("", PLAYBACK, PCM_STREAM),
                [CONTROL_SPDIF_INPUT_BITS] =
                        SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT),
                [CONTROL_MIC_CAPTURE_SWITCH] = "Mic Capture Switch",
                [CONTROL_LINE_CAPTURE_SWITCH] = "Line Capture Switch",
                [CONTROL_CD_CAPTURE_SWITCH] = "CD Capture Switch",
                [CONTROL_AUX_CAPTURE_SWITCH] = "Aux Capture Switch",
        };
        unsigned int i, j;
        struct snd_kcontrol_new template;
        struct snd_kcontrol *ctl;
        int err;

        for (i = 0; i < count; ++i) {
                template = controls[i];
                if (chip->model.control_filter) {
                        err = chip->model.control_filter(&template);
                        if (err < 0)
                                return err;
                        if (err == 1)
                                continue;
                }
                if (!strcmp(template.name, "Master Playback Volume") &&
                    chip->model.dac_tlv) {
                        template.tlv.p = chip->model.dac_tlv;
                        template.access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
                }
                ctl = snd_ctl_new1(&template, chip);
                if (!ctl)
                        return -ENOMEM;
                err = snd_ctl_add(chip->card, ctl);
                if (err < 0)
                        return err;
                for (j = 0; j < CONTROL_COUNT; ++j)
                        if (!strcmp(ctl->id.name, known_ctl_names[j])) {
                                chip->controls[j] = ctl;
                                ctl->private_free = oxygen_any_ctl_free;
                        }
        }
        return 0;
}

int oxygen_mixer_init(struct oxygen *chip)
{
        unsigned int i;
        int err;

        err = add_controls(chip, controls, ARRAY_SIZE(controls));
        if (err < 0)
                return err;
        if (chip->model.device_config & CAPTURE_1_FROM_SPDIF) {
                err = add_controls(chip, spdif_input_controls,
                                   ARRAY_SIZE(spdif_input_controls));
                if (err < 0)
                        return err;
        }
        for (i = 0; i < ARRAY_SIZE(monitor_controls); ++i) {
                if (!(chip->model.device_config & monitor_controls[i].pcm_dev))
                        continue;
                err = add_controls(chip, monitor_controls[i].controls,
                                   ARRAY_SIZE(monitor_controls[i].controls));
                if (err < 0)
                        return err;
        }
        if (chip->has_ac97_0) {
                err = add_controls(chip, ac97_controls,
                                   ARRAY_SIZE(ac97_controls));
                if (err < 0)
                        return err;
        }
        if (chip->has_ac97_1) {
                err = add_controls(chip, ac97_fp_controls,
                                   ARRAY_SIZE(ac97_fp_controls));
                if (err < 0)
                        return err;
        }
        return chip->model.mixer_init ? chip->model.mixer_init(chip) : 0;
}

/* [<][>][^][v][top][bottom][index][help] */

[funini.com] -> [kei@sodan] -> Kernel Reading