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640 lines
17 KiB
640 lines
17 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Routines for control of the AK4113 via I2C/4-wire serial interface |
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* IEC958 (S/PDIF) receiver by Asahi Kasei |
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* Copyright (c) by Jaroslav Kysela <[email protected]> |
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* Copyright (c) by Pavel Hofman <[email protected]> |
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*/ |
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#include <linux/slab.h> |
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#include <linux/delay.h> |
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#include <linux/module.h> |
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#include <sound/core.h> |
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#include <sound/control.h> |
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#include <sound/pcm.h> |
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#include <sound/ak4113.h> |
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#include <sound/asoundef.h> |
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#include <sound/info.h> |
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MODULE_AUTHOR("Pavel Hofman <[email protected]>"); |
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MODULE_DESCRIPTION("AK4113 IEC958 (S/PDIF) receiver by Asahi Kasei"); |
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MODULE_LICENSE("GPL"); |
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#define AK4113_ADDR 0x00 /* fixed address */ |
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static void ak4113_stats(struct work_struct *work); |
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static void ak4113_init_regs(struct ak4113 *chip); |
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static void reg_write(struct ak4113 *ak4113, unsigned char reg, |
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unsigned char val) |
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{ |
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ak4113->write(ak4113->private_data, reg, val); |
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if (reg < sizeof(ak4113->regmap)) |
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ak4113->regmap[reg] = val; |
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} |
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static inline unsigned char reg_read(struct ak4113 *ak4113, unsigned char reg) |
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{ |
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return ak4113->read(ak4113->private_data, reg); |
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} |
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static void snd_ak4113_free(struct ak4113 *chip) |
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{ |
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atomic_inc(&chip->wq_processing); /* don't schedule new work */ |
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cancel_delayed_work_sync(&chip->work); |
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kfree(chip); |
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} |
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static int snd_ak4113_dev_free(struct snd_device *device) |
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{ |
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struct ak4113 *chip = device->device_data; |
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snd_ak4113_free(chip); |
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return 0; |
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} |
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int snd_ak4113_create(struct snd_card *card, ak4113_read_t *read, |
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ak4113_write_t *write, const unsigned char *pgm, |
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void *private_data, struct ak4113 **r_ak4113) |
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{ |
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struct ak4113 *chip; |
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int err; |
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unsigned char reg; |
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static const struct snd_device_ops ops = { |
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.dev_free = snd_ak4113_dev_free, |
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}; |
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chip = kzalloc(sizeof(*chip), GFP_KERNEL); |
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if (chip == NULL) |
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return -ENOMEM; |
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spin_lock_init(&chip->lock); |
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chip->card = card; |
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chip->read = read; |
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chip->write = write; |
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chip->private_data = private_data; |
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INIT_DELAYED_WORK(&chip->work, ak4113_stats); |
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atomic_set(&chip->wq_processing, 0); |
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mutex_init(&chip->reinit_mutex); |
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for (reg = 0; reg < AK4113_WRITABLE_REGS ; reg++) |
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chip->regmap[reg] = pgm[reg]; |
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ak4113_init_regs(chip); |
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chip->rcs0 = reg_read(chip, AK4113_REG_RCS0) & ~(AK4113_QINT | |
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AK4113_CINT | AK4113_STC); |
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chip->rcs1 = reg_read(chip, AK4113_REG_RCS1); |
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chip->rcs2 = reg_read(chip, AK4113_REG_RCS2); |
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err = snd_device_new(card, SNDRV_DEV_CODEC, chip, &ops); |
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if (err < 0) |
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goto __fail; |
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if (r_ak4113) |
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*r_ak4113 = chip; |
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return 0; |
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__fail: |
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snd_ak4113_free(chip); |
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return err; |
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} |
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EXPORT_SYMBOL_GPL(snd_ak4113_create); |
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void snd_ak4113_reg_write(struct ak4113 *chip, unsigned char reg, |
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unsigned char mask, unsigned char val) |
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{ |
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if (reg >= AK4113_WRITABLE_REGS) |
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return; |
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reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val); |
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} |
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EXPORT_SYMBOL_GPL(snd_ak4113_reg_write); |
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static void ak4113_init_regs(struct ak4113 *chip) |
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{ |
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unsigned char old = chip->regmap[AK4113_REG_PWRDN], reg; |
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/* bring the chip to reset state and powerdown state */ |
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reg_write(chip, AK4113_REG_PWRDN, old & ~(AK4113_RST|AK4113_PWN)); |
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udelay(200); |
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/* release reset, but leave powerdown */ |
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reg_write(chip, AK4113_REG_PWRDN, (old | AK4113_RST) & ~AK4113_PWN); |
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udelay(200); |
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for (reg = 1; reg < AK4113_WRITABLE_REGS; reg++) |
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reg_write(chip, reg, chip->regmap[reg]); |
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/* release powerdown, everything is initialized now */ |
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reg_write(chip, AK4113_REG_PWRDN, old | AK4113_RST | AK4113_PWN); |
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} |
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void snd_ak4113_reinit(struct ak4113 *chip) |
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{ |
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if (atomic_inc_return(&chip->wq_processing) == 1) |
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cancel_delayed_work_sync(&chip->work); |
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mutex_lock(&chip->reinit_mutex); |
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ak4113_init_regs(chip); |
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mutex_unlock(&chip->reinit_mutex); |
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/* bring up statistics / event queing */ |
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if (atomic_dec_and_test(&chip->wq_processing)) |
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schedule_delayed_work(&chip->work, HZ / 10); |
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} |
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EXPORT_SYMBOL_GPL(snd_ak4113_reinit); |
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static unsigned int external_rate(unsigned char rcs1) |
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{ |
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switch (rcs1 & (AK4113_FS0|AK4113_FS1|AK4113_FS2|AK4113_FS3)) { |
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case AK4113_FS_8000HZ: |
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return 8000; |
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case AK4113_FS_11025HZ: |
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return 11025; |
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case AK4113_FS_16000HZ: |
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return 16000; |
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case AK4113_FS_22050HZ: |
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return 22050; |
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case AK4113_FS_24000HZ: |
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return 24000; |
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case AK4113_FS_32000HZ: |
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return 32000; |
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case AK4113_FS_44100HZ: |
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return 44100; |
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case AK4113_FS_48000HZ: |
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return 48000; |
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case AK4113_FS_64000HZ: |
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return 64000; |
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case AK4113_FS_88200HZ: |
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return 88200; |
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case AK4113_FS_96000HZ: |
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return 96000; |
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case AK4113_FS_176400HZ: |
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return 176400; |
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case AK4113_FS_192000HZ: |
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return 192000; |
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default: |
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return 0; |
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} |
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} |
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static int snd_ak4113_in_error_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
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uinfo->count = 1; |
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uinfo->value.integer.min = 0; |
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uinfo->value.integer.max = LONG_MAX; |
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return 0; |
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} |
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static int snd_ak4113_in_error_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct ak4113 *chip = snd_kcontrol_chip(kcontrol); |
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spin_lock_irq(&chip->lock); |
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ucontrol->value.integer.value[0] = |
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chip->errors[kcontrol->private_value]; |
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chip->errors[kcontrol->private_value] = 0; |
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spin_unlock_irq(&chip->lock); |
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return 0; |
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} |
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#define snd_ak4113_in_bit_info snd_ctl_boolean_mono_info |
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static int snd_ak4113_in_bit_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct ak4113 *chip = snd_kcontrol_chip(kcontrol); |
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unsigned char reg = kcontrol->private_value & 0xff; |
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unsigned char bit = (kcontrol->private_value >> 8) & 0xff; |
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unsigned char inv = (kcontrol->private_value >> 31) & 1; |
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ucontrol->value.integer.value[0] = |
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((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv; |
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return 0; |
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} |
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static int snd_ak4113_rx_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
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uinfo->count = 1; |
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uinfo->value.integer.min = 0; |
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uinfo->value.integer.max = 5; |
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return 0; |
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} |
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static int snd_ak4113_rx_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct ak4113 *chip = snd_kcontrol_chip(kcontrol); |
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ucontrol->value.integer.value[0] = |
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(AK4113_IPS(chip->regmap[AK4113_REG_IO1])); |
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return 0; |
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} |
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static int snd_ak4113_rx_put(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct ak4113 *chip = snd_kcontrol_chip(kcontrol); |
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int change; |
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u8 old_val; |
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spin_lock_irq(&chip->lock); |
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old_val = chip->regmap[AK4113_REG_IO1]; |
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change = ucontrol->value.integer.value[0] != AK4113_IPS(old_val); |
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if (change) |
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reg_write(chip, AK4113_REG_IO1, |
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(old_val & (~AK4113_IPS(0xff))) | |
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(AK4113_IPS(ucontrol->value.integer.value[0]))); |
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spin_unlock_irq(&chip->lock); |
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return change; |
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} |
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static int snd_ak4113_rate_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
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uinfo->count = 1; |
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uinfo->value.integer.min = 0; |
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uinfo->value.integer.max = 192000; |
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return 0; |
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} |
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static int snd_ak4113_rate_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct ak4113 *chip = snd_kcontrol_chip(kcontrol); |
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ucontrol->value.integer.value[0] = external_rate(reg_read(chip, |
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AK4113_REG_RCS1)); |
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return 0; |
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} |
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static int snd_ak4113_spdif_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; |
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uinfo->count = 1; |
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return 0; |
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} |
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static int snd_ak4113_spdif_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct ak4113 *chip = snd_kcontrol_chip(kcontrol); |
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unsigned i; |
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for (i = 0; i < AK4113_REG_RXCSB_SIZE; i++) |
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ucontrol->value.iec958.status[i] = reg_read(chip, |
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AK4113_REG_RXCSB0 + i); |
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return 0; |
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} |
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static int snd_ak4113_spdif_mask_info(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958; |
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uinfo->count = 1; |
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return 0; |
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} |
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static int snd_ak4113_spdif_mask_get(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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memset(ucontrol->value.iec958.status, 0xff, AK4113_REG_RXCSB_SIZE); |
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return 0; |
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} |
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static int snd_ak4113_spdif_pinfo(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
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uinfo->value.integer.min = 0; |
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uinfo->value.integer.max = 0xffff; |
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uinfo->count = 4; |
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return 0; |
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} |
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static int snd_ak4113_spdif_pget(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct ak4113 *chip = snd_kcontrol_chip(kcontrol); |
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unsigned short tmp; |
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ucontrol->value.integer.value[0] = 0xf8f2; |
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ucontrol->value.integer.value[1] = 0x4e1f; |
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tmp = reg_read(chip, AK4113_REG_Pc0) | |
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(reg_read(chip, AK4113_REG_Pc1) << 8); |
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ucontrol->value.integer.value[2] = tmp; |
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tmp = reg_read(chip, AK4113_REG_Pd0) | |
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(reg_read(chip, AK4113_REG_Pd1) << 8); |
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ucontrol->value.integer.value[3] = tmp; |
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return 0; |
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} |
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static int snd_ak4113_spdif_qinfo(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_info *uinfo) |
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{ |
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uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES; |
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uinfo->count = AK4113_REG_QSUB_SIZE; |
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return 0; |
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} |
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static int snd_ak4113_spdif_qget(struct snd_kcontrol *kcontrol, |
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struct snd_ctl_elem_value *ucontrol) |
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{ |
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struct ak4113 *chip = snd_kcontrol_chip(kcontrol); |
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unsigned i; |
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for (i = 0; i < AK4113_REG_QSUB_SIZE; i++) |
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ucontrol->value.bytes.data[i] = reg_read(chip, |
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AK4113_REG_QSUB_ADDR + i); |
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return 0; |
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} |
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/* Don't forget to change AK4113_CONTROLS define!!! */ |
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static const struct snd_kcontrol_new snd_ak4113_iec958_controls[] = { |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "IEC958 Parity Errors", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_in_error_info, |
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.get = snd_ak4113_in_error_get, |
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.private_value = AK4113_PARITY_ERRORS, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "IEC958 V-Bit Errors", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_in_error_info, |
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.get = snd_ak4113_in_error_get, |
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.private_value = AK4113_V_BIT_ERRORS, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "IEC958 C-CRC Errors", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_in_error_info, |
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.get = snd_ak4113_in_error_get, |
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.private_value = AK4113_CCRC_ERRORS, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "IEC958 Q-CRC Errors", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_in_error_info, |
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.get = snd_ak4113_in_error_get, |
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.private_value = AK4113_QCRC_ERRORS, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "IEC958 External Rate", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_rate_info, |
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.get = snd_ak4113_rate_get, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, MASK), |
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.access = SNDRV_CTL_ELEM_ACCESS_READ, |
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.info = snd_ak4113_spdif_mask_info, |
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.get = snd_ak4113_spdif_mask_get, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = SNDRV_CTL_NAME_IEC958("", CAPTURE, DEFAULT), |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_spdif_info, |
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.get = snd_ak4113_spdif_get, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "IEC958 Preamble Capture Default", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_spdif_pinfo, |
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.get = snd_ak4113_spdif_pget, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "IEC958 Q-subcode Capture Default", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_spdif_qinfo, |
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.get = snd_ak4113_spdif_qget, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "IEC958 Audio", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_in_bit_info, |
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.get = snd_ak4113_in_bit_get, |
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.private_value = (1<<31) | (1<<8) | AK4113_REG_RCS0, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "IEC958 Non-PCM Bitstream", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_in_bit_info, |
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.get = snd_ak4113_in_bit_get, |
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.private_value = (0<<8) | AK4113_REG_RCS1, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "IEC958 DTS Bitstream", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_VOLATILE, |
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.info = snd_ak4113_in_bit_info, |
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.get = snd_ak4113_in_bit_get, |
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.private_value = (1<<8) | AK4113_REG_RCS1, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_PCM, |
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.name = "AK4113 Input Select", |
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.access = SNDRV_CTL_ELEM_ACCESS_READ | |
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SNDRV_CTL_ELEM_ACCESS_WRITE, |
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.info = snd_ak4113_rx_info, |
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.get = snd_ak4113_rx_get, |
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.put = snd_ak4113_rx_put, |
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} |
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}; |
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|
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static void snd_ak4113_proc_regs_read(struct snd_info_entry *entry, |
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struct snd_info_buffer *buffer) |
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{ |
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struct ak4113 *ak4113 = entry->private_data; |
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int reg, val; |
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/* all ak4113 registers 0x00 - 0x1c */ |
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for (reg = 0; reg < 0x1d; reg++) { |
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val = reg_read(ak4113, reg); |
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snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val); |
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} |
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} |
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|
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static void snd_ak4113_proc_init(struct ak4113 *ak4113) |
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{ |
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snd_card_ro_proc_new(ak4113->card, "ak4113", ak4113, |
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snd_ak4113_proc_regs_read); |
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} |
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|
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int snd_ak4113_build(struct ak4113 *ak4113, |
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struct snd_pcm_substream *cap_substream) |
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{ |
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struct snd_kcontrol *kctl; |
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unsigned int idx; |
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int err; |
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|
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if (snd_BUG_ON(!cap_substream)) |
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return -EINVAL; |
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ak4113->substream = cap_substream; |
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for (idx = 0; idx < AK4113_CONTROLS; idx++) { |
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kctl = snd_ctl_new1(&snd_ak4113_iec958_controls[idx], ak4113); |
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if (kctl == NULL) |
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return -ENOMEM; |
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kctl->id.device = cap_substream->pcm->device; |
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kctl->id.subdevice = cap_substream->number; |
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err = snd_ctl_add(ak4113->card, kctl); |
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if (err < 0) |
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return err; |
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ak4113->kctls[idx] = kctl; |
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} |
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snd_ak4113_proc_init(ak4113); |
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/* trigger workq */ |
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schedule_delayed_work(&ak4113->work, HZ / 10); |
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(snd_ak4113_build); |
|
|
|
int snd_ak4113_external_rate(struct ak4113 *ak4113) |
|
{ |
|
unsigned char rcs1; |
|
|
|
rcs1 = reg_read(ak4113, AK4113_REG_RCS1); |
|
return external_rate(rcs1); |
|
} |
|
EXPORT_SYMBOL_GPL(snd_ak4113_external_rate); |
|
|
|
int snd_ak4113_check_rate_and_errors(struct ak4113 *ak4113, unsigned int flags) |
|
{ |
|
struct snd_pcm_runtime *runtime = |
|
ak4113->substream ? ak4113->substream->runtime : NULL; |
|
unsigned long _flags; |
|
int res = 0; |
|
unsigned char rcs0, rcs1, rcs2; |
|
unsigned char c0, c1; |
|
|
|
rcs1 = reg_read(ak4113, AK4113_REG_RCS1); |
|
if (flags & AK4113_CHECK_NO_STAT) |
|
goto __rate; |
|
rcs0 = reg_read(ak4113, AK4113_REG_RCS0); |
|
rcs2 = reg_read(ak4113, AK4113_REG_RCS2); |
|
spin_lock_irqsave(&ak4113->lock, _flags); |
|
if (rcs0 & AK4113_PAR) |
|
ak4113->errors[AK4113_PARITY_ERRORS]++; |
|
if (rcs0 & AK4113_V) |
|
ak4113->errors[AK4113_V_BIT_ERRORS]++; |
|
if (rcs2 & AK4113_CCRC) |
|
ak4113->errors[AK4113_CCRC_ERRORS]++; |
|
if (rcs2 & AK4113_QCRC) |
|
ak4113->errors[AK4113_QCRC_ERRORS]++; |
|
c0 = (ak4113->rcs0 & (AK4113_QINT | AK4113_CINT | AK4113_STC | |
|
AK4113_AUDION | AK4113_AUTO | AK4113_UNLCK)) ^ |
|
(rcs0 & (AK4113_QINT | AK4113_CINT | AK4113_STC | |
|
AK4113_AUDION | AK4113_AUTO | AK4113_UNLCK)); |
|
c1 = (ak4113->rcs1 & (AK4113_DTSCD | AK4113_NPCM | AK4113_PEM | |
|
AK4113_DAT | 0xf0)) ^ |
|
(rcs1 & (AK4113_DTSCD | AK4113_NPCM | AK4113_PEM | |
|
AK4113_DAT | 0xf0)); |
|
ak4113->rcs0 = rcs0 & ~(AK4113_QINT | AK4113_CINT | AK4113_STC); |
|
ak4113->rcs1 = rcs1; |
|
ak4113->rcs2 = rcs2; |
|
spin_unlock_irqrestore(&ak4113->lock, _flags); |
|
|
|
if (rcs0 & AK4113_PAR) |
|
snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&ak4113->kctls[0]->id); |
|
if (rcs0 & AK4113_V) |
|
snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&ak4113->kctls[1]->id); |
|
if (rcs2 & AK4113_CCRC) |
|
snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&ak4113->kctls[2]->id); |
|
if (rcs2 & AK4113_QCRC) |
|
snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&ak4113->kctls[3]->id); |
|
|
|
/* rate change */ |
|
if (c1 & 0xf0) |
|
snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&ak4113->kctls[4]->id); |
|
|
|
if ((c1 & AK4113_PEM) | (c0 & AK4113_CINT)) |
|
snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&ak4113->kctls[6]->id); |
|
if (c0 & AK4113_QINT) |
|
snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&ak4113->kctls[8]->id); |
|
|
|
if (c0 & AK4113_AUDION) |
|
snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&ak4113->kctls[9]->id); |
|
if (c1 & AK4113_NPCM) |
|
snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&ak4113->kctls[10]->id); |
|
if (c1 & AK4113_DTSCD) |
|
snd_ctl_notify(ak4113->card, SNDRV_CTL_EVENT_MASK_VALUE, |
|
&ak4113->kctls[11]->id); |
|
|
|
if (ak4113->change_callback && (c0 | c1) != 0) |
|
ak4113->change_callback(ak4113, c0, c1); |
|
|
|
__rate: |
|
/* compare rate */ |
|
res = external_rate(rcs1); |
|
if (!(flags & AK4113_CHECK_NO_RATE) && runtime && |
|
(runtime->rate != res)) { |
|
snd_pcm_stream_lock_irqsave(ak4113->substream, _flags); |
|
if (snd_pcm_running(ak4113->substream)) { |
|
/*printk(KERN_DEBUG "rate changed (%i <- %i)\n", |
|
* runtime->rate, res); */ |
|
snd_pcm_stop(ak4113->substream, |
|
SNDRV_PCM_STATE_DRAINING); |
|
wake_up(&runtime->sleep); |
|
res = 1; |
|
} |
|
snd_pcm_stream_unlock_irqrestore(ak4113->substream, _flags); |
|
} |
|
return res; |
|
} |
|
EXPORT_SYMBOL_GPL(snd_ak4113_check_rate_and_errors); |
|
|
|
static void ak4113_stats(struct work_struct *work) |
|
{ |
|
struct ak4113 *chip = container_of(work, struct ak4113, work.work); |
|
|
|
if (atomic_inc_return(&chip->wq_processing) == 1) |
|
snd_ak4113_check_rate_and_errors(chip, chip->check_flags); |
|
|
|
if (atomic_dec_and_test(&chip->wq_processing)) |
|
schedule_delayed_work(&chip->work, HZ / 10); |
|
} |
|
|
|
#ifdef CONFIG_PM |
|
void snd_ak4113_suspend(struct ak4113 *chip) |
|
{ |
|
atomic_inc(&chip->wq_processing); /* don't schedule new work */ |
|
cancel_delayed_work_sync(&chip->work); |
|
} |
|
EXPORT_SYMBOL(snd_ak4113_suspend); |
|
|
|
void snd_ak4113_resume(struct ak4113 *chip) |
|
{ |
|
atomic_dec(&chip->wq_processing); |
|
snd_ak4113_reinit(chip); |
|
} |
|
EXPORT_SYMBOL(snd_ak4113_resume); |
|
#endif
|
|
|