![Takashi Iwai](/assets/img/avatar_default.png)
The ak4113, ak4114 and ak4117 i2c drivers have some tricky codes to access the struct fields in the callback. This can be simplified by replacing the struct fields with the array. Signed-off-by: Takashi Iwai <tiwai@suse.de>
642 lines
19 KiB
C
642 lines
19 KiB
C
/*
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* Routines for control of the AK4114 via I2C and 4-wire serial interface
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* IEC958 (S/PDIF) receiver by Asahi Kasei
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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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/ak4114.h>
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#include <sound/asoundef.h>
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#include <sound/info.h>
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MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
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MODULE_DESCRIPTION("AK4114 IEC958 (S/PDIF) receiver by Asahi Kasei");
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MODULE_LICENSE("GPL");
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#define AK4114_ADDR 0x00 /* fixed address */
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static void ak4114_stats(struct work_struct *work);
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static void ak4114_init_regs(struct ak4114 *chip);
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static void reg_write(struct ak4114 *ak4114, unsigned char reg, unsigned char val)
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{
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ak4114->write(ak4114->private_data, reg, val);
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if (reg <= AK4114_REG_INT1_MASK)
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ak4114->regmap[reg] = val;
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else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
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ak4114->txcsb[reg-AK4114_REG_TXCSB0] = val;
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}
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static inline unsigned char reg_read(struct ak4114 *ak4114, unsigned char reg)
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{
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return ak4114->read(ak4114->private_data, reg);
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}
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#if 0
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static void reg_dump(struct ak4114 *ak4114)
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{
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int i;
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printk(KERN_DEBUG "AK4114 REG DUMP:\n");
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for (i = 0; i < 0x20; i++)
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printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4114, i), i < ARRAY_SIZE(ak4114->regmap) ? ak4114->regmap[i] : 0);
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}
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#endif
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static void snd_ak4114_free(struct ak4114 *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_ak4114_dev_free(struct snd_device *device)
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{
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struct ak4114 *chip = device->device_data;
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snd_ak4114_free(chip);
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return 0;
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}
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int snd_ak4114_create(struct snd_card *card,
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ak4114_read_t *read, ak4114_write_t *write,
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const unsigned char pgm[6], const unsigned char txcsb[5],
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void *private_data, struct ak4114 **r_ak4114)
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{
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struct ak4114 *chip;
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int err = 0;
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unsigned char reg;
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static struct snd_device_ops ops = {
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.dev_free = snd_ak4114_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, ak4114_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 < 6; reg++)
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chip->regmap[reg] = pgm[reg];
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for (reg = 0; reg < 5; reg++)
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chip->txcsb[reg] = txcsb[reg];
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ak4114_init_regs(chip);
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chip->rcs0 = reg_read(chip, AK4114_REG_RCS0) & ~(AK4114_QINT | AK4114_CINT);
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chip->rcs1 = reg_read(chip, AK4114_REG_RCS1);
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if ((err = snd_device_new(card, SNDRV_DEV_CODEC, chip, &ops)) < 0)
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goto __fail;
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if (r_ak4114)
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*r_ak4114 = chip;
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return 0;
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__fail:
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snd_ak4114_free(chip);
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return err;
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}
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EXPORT_SYMBOL(snd_ak4114_create);
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void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val)
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{
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if (reg <= AK4114_REG_INT1_MASK)
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reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
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else if (reg >= AK4114_REG_TXCSB0 && reg <= AK4114_REG_TXCSB4)
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reg_write(chip, reg,
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(chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val);
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}
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EXPORT_SYMBOL(snd_ak4114_reg_write);
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static void ak4114_init_regs(struct ak4114 *chip)
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{
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unsigned char old = chip->regmap[AK4114_REG_PWRDN], reg;
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/* bring the chip to reset state and powerdown state */
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reg_write(chip, AK4114_REG_PWRDN, old & ~(AK4114_RST|AK4114_PWN));
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udelay(200);
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/* release reset, but leave powerdown */
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reg_write(chip, AK4114_REG_PWRDN, (old | AK4114_RST) & ~AK4114_PWN);
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udelay(200);
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for (reg = 1; reg < 6; reg++)
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reg_write(chip, reg, chip->regmap[reg]);
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for (reg = 0; reg < 5; reg++)
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reg_write(chip, reg + AK4114_REG_TXCSB0, chip->txcsb[reg]);
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/* release powerdown, everything is initialized now */
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reg_write(chip, AK4114_REG_PWRDN, old | AK4114_RST | AK4114_PWN);
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}
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void snd_ak4114_reinit(struct ak4114 *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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ak4114_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(snd_ak4114_reinit);
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static unsigned int external_rate(unsigned char rcs1)
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{
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switch (rcs1 & (AK4114_FS0|AK4114_FS1|AK4114_FS2|AK4114_FS3)) {
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case AK4114_FS_32000HZ: return 32000;
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case AK4114_FS_44100HZ: return 44100;
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case AK4114_FS_48000HZ: return 48000;
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case AK4114_FS_88200HZ: return 88200;
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case AK4114_FS_96000HZ: return 96000;
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case AK4114_FS_176400HZ: return 176400;
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case AK4114_FS_192000HZ: return 192000;
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default: return 0;
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}
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}
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static int snd_ak4114_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_ak4114_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 ak4114 *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_ak4114_in_bit_info snd_ctl_boolean_mono_info
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static int snd_ak4114_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 ak4114 *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] = ((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_ak4114_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_ak4114_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 ak4114 *chip = snd_kcontrol_chip(kcontrol);
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ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4114_REG_RCS1));
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return 0;
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}
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static int snd_ak4114_spdif_info(struct snd_kcontrol *kcontrol, 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_ak4114_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 ak4114 *chip = snd_kcontrol_chip(kcontrol);
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unsigned i;
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for (i = 0; i < AK4114_REG_RXCSB_SIZE; i++)
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ucontrol->value.iec958.status[i] = reg_read(chip, AK4114_REG_RXCSB0 + i);
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return 0;
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}
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static int snd_ak4114_spdif_playback_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
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unsigned i;
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for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
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ucontrol->value.iec958.status[i] = chip->txcsb[i];
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return 0;
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}
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static int snd_ak4114_spdif_playback_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct ak4114 *chip = snd_kcontrol_chip(kcontrol);
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unsigned i;
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for (i = 0; i < AK4114_REG_TXCSB_SIZE; i++)
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reg_write(chip, AK4114_REG_TXCSB0 + i, ucontrol->value.iec958.status[i]);
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return 0;
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}
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static int snd_ak4114_spdif_mask_info(struct snd_kcontrol *kcontrol, 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_ak4114_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, AK4114_REG_RXCSB_SIZE);
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return 0;
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}
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static int snd_ak4114_spdif_pinfo(struct snd_kcontrol *kcontrol, 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_ak4114_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 ak4114 *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, AK4114_REG_Pc0) | (reg_read(chip, AK4114_REG_Pc1) << 8);
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ucontrol->value.integer.value[2] = tmp;
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tmp = reg_read(chip, AK4114_REG_Pd0) | (reg_read(chip, AK4114_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_ak4114_spdif_qinfo(struct snd_kcontrol *kcontrol, 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 = AK4114_REG_QSUB_SIZE;
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return 0;
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}
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static int snd_ak4114_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 ak4114 *chip = snd_kcontrol_chip(kcontrol);
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unsigned i;
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for (i = 0; i < AK4114_REG_QSUB_SIZE; i++)
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ucontrol->value.bytes.data[i] = reg_read(chip, AK4114_REG_QSUB_ADDR + i);
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return 0;
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}
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/* Don't forget to change AK4114_CONTROLS define!!! */
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static struct snd_kcontrol_new snd_ak4114_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 | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
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.info = snd_ak4114_in_error_info,
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.get = snd_ak4114_in_error_get,
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.private_value = AK4114_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 | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
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.info = snd_ak4114_in_error_info,
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.get = snd_ak4114_in_error_get,
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.private_value = AK4114_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 | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
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.info = snd_ak4114_in_error_info,
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.get = snd_ak4114_in_error_get,
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.private_value = AK4114_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 | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
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.info = snd_ak4114_in_error_info,
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.get = snd_ak4114_in_error_get,
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.private_value = AK4114_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 | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
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.info = snd_ak4114_rate_info,
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.get = snd_ak4114_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("",PLAYBACK,MASK),
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.access = SNDRV_CTL_ELEM_ACCESS_READ,
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.info = snd_ak4114_spdif_mask_info,
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.get = snd_ak4114_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("",PLAYBACK,DEFAULT),
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.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
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.info = snd_ak4114_spdif_info,
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.get = snd_ak4114_spdif_playback_get,
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.put = snd_ak4114_spdif_playback_put,
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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_ak4114_spdif_mask_info,
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.get = snd_ak4114_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 | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
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.info = snd_ak4114_spdif_info,
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.get = snd_ak4114_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 | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
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.info = snd_ak4114_spdif_pinfo,
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.get = snd_ak4114_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 | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
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.info = snd_ak4114_spdif_qinfo,
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.get = snd_ak4114_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 | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
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.info = snd_ak4114_in_bit_info,
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.get = snd_ak4114_in_bit_get,
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.private_value = (1<<31) | (1<<8) | AK4114_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 | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
|
|
.info = snd_ak4114_in_bit_info,
|
|
.get = snd_ak4114_in_bit_get,
|
|
.private_value = (6<<8) | AK4114_REG_RCS0,
|
|
},
|
|
{
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
|
.name = "IEC958 DTS Bitstream",
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
|
|
.info = snd_ak4114_in_bit_info,
|
|
.get = snd_ak4114_in_bit_get,
|
|
.private_value = (3<<8) | AK4114_REG_RCS0,
|
|
},
|
|
{
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
|
.name = "IEC958 PPL Lock Status",
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
|
|
.info = snd_ak4114_in_bit_info,
|
|
.get = snd_ak4114_in_bit_get,
|
|
.private_value = (1<<31) | (4<<8) | AK4114_REG_RCS0,
|
|
}
|
|
};
|
|
|
|
|
|
static void snd_ak4114_proc_regs_read(struct snd_info_entry *entry,
|
|
struct snd_info_buffer *buffer)
|
|
{
|
|
struct ak4114 *ak4114 = entry->private_data;
|
|
int reg, val;
|
|
/* all ak4114 registers 0x00 - 0x1f */
|
|
for (reg = 0; reg < 0x20; reg++) {
|
|
val = reg_read(ak4114, reg);
|
|
snd_iprintf(buffer, "0x%02x = 0x%02x\n", reg, val);
|
|
}
|
|
}
|
|
|
|
static void snd_ak4114_proc_init(struct ak4114 *ak4114)
|
|
{
|
|
struct snd_info_entry *entry;
|
|
if (!snd_card_proc_new(ak4114->card, "ak4114", &entry))
|
|
snd_info_set_text_ops(entry, ak4114, snd_ak4114_proc_regs_read);
|
|
}
|
|
|
|
int snd_ak4114_build(struct ak4114 *ak4114,
|
|
struct snd_pcm_substream *ply_substream,
|
|
struct snd_pcm_substream *cap_substream)
|
|
{
|
|
struct snd_kcontrol *kctl;
|
|
unsigned int idx;
|
|
int err;
|
|
|
|
if (snd_BUG_ON(!cap_substream))
|
|
return -EINVAL;
|
|
ak4114->playback_substream = ply_substream;
|
|
ak4114->capture_substream = cap_substream;
|
|
for (idx = 0; idx < AK4114_CONTROLS; idx++) {
|
|
kctl = snd_ctl_new1(&snd_ak4114_iec958_controls[idx], ak4114);
|
|
if (kctl == NULL)
|
|
return -ENOMEM;
|
|
if (strstr(kctl->id.name, "Playback")) {
|
|
if (ply_substream == NULL) {
|
|
snd_ctl_free_one(kctl);
|
|
ak4114->kctls[idx] = NULL;
|
|
continue;
|
|
}
|
|
kctl->id.device = ply_substream->pcm->device;
|
|
kctl->id.subdevice = ply_substream->number;
|
|
} else {
|
|
kctl->id.device = cap_substream->pcm->device;
|
|
kctl->id.subdevice = cap_substream->number;
|
|
}
|
|
err = snd_ctl_add(ak4114->card, kctl);
|
|
if (err < 0)
|
|
return err;
|
|
ak4114->kctls[idx] = kctl;
|
|
}
|
|
snd_ak4114_proc_init(ak4114);
|
|
/* trigger workq */
|
|
schedule_delayed_work(&ak4114->work, HZ / 10);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(snd_ak4114_build);
|
|
|
|
/* notify kcontrols if any parameters are changed */
|
|
static void ak4114_notify(struct ak4114 *ak4114,
|
|
unsigned char rcs0, unsigned char rcs1,
|
|
unsigned char c0, unsigned char c1)
|
|
{
|
|
if (!ak4114->kctls[0])
|
|
return;
|
|
|
|
if (rcs0 & AK4114_PAR)
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[0]->id);
|
|
if (rcs0 & AK4114_V)
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[1]->id);
|
|
if (rcs1 & AK4114_CCRC)
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[2]->id);
|
|
if (rcs1 & AK4114_QCRC)
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[3]->id);
|
|
|
|
/* rate change */
|
|
if (c1 & 0xf0)
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[4]->id);
|
|
|
|
if ((c0 & AK4114_PEM) | (c0 & AK4114_CINT))
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[9]->id);
|
|
if (c0 & AK4114_QINT)
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[10]->id);
|
|
|
|
if (c0 & AK4114_AUDION)
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[11]->id);
|
|
if (c0 & AK4114_AUTO)
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[12]->id);
|
|
if (c0 & AK4114_DTSCD)
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[13]->id);
|
|
if (c0 & AK4114_UNLCK)
|
|
snd_ctl_notify(ak4114->card, SNDRV_CTL_EVENT_MASK_VALUE,
|
|
&ak4114->kctls[14]->id);
|
|
}
|
|
|
|
int snd_ak4114_external_rate(struct ak4114 *ak4114)
|
|
{
|
|
unsigned char rcs1;
|
|
|
|
rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
|
|
return external_rate(rcs1);
|
|
}
|
|
EXPORT_SYMBOL(snd_ak4114_external_rate);
|
|
|
|
int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
|
|
{
|
|
struct snd_pcm_runtime *runtime = ak4114->capture_substream ? ak4114->capture_substream->runtime : NULL;
|
|
unsigned long _flags;
|
|
int res = 0;
|
|
unsigned char rcs0, rcs1;
|
|
unsigned char c0, c1;
|
|
|
|
rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
|
|
if (flags & AK4114_CHECK_NO_STAT)
|
|
goto __rate;
|
|
rcs0 = reg_read(ak4114, AK4114_REG_RCS0);
|
|
spin_lock_irqsave(&ak4114->lock, _flags);
|
|
if (rcs0 & AK4114_PAR)
|
|
ak4114->errors[AK4114_PARITY_ERRORS]++;
|
|
if (rcs1 & AK4114_V)
|
|
ak4114->errors[AK4114_V_BIT_ERRORS]++;
|
|
if (rcs1 & AK4114_CCRC)
|
|
ak4114->errors[AK4114_CCRC_ERRORS]++;
|
|
if (rcs1 & AK4114_QCRC)
|
|
ak4114->errors[AK4114_QCRC_ERRORS]++;
|
|
c0 = (ak4114->rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK)) ^
|
|
(rcs0 & (AK4114_QINT | AK4114_CINT | AK4114_PEM | AK4114_AUDION | AK4114_AUTO | AK4114_UNLCK));
|
|
c1 = (ak4114->rcs1 & 0xf0) ^ (rcs1 & 0xf0);
|
|
ak4114->rcs0 = rcs0 & ~(AK4114_QINT | AK4114_CINT);
|
|
ak4114->rcs1 = rcs1;
|
|
spin_unlock_irqrestore(&ak4114->lock, _flags);
|
|
|
|
ak4114_notify(ak4114, rcs0, rcs1, c0, c1);
|
|
if (ak4114->change_callback && (c0 | c1) != 0)
|
|
ak4114->change_callback(ak4114, c0, c1);
|
|
|
|
__rate:
|
|
/* compare rate */
|
|
res = external_rate(rcs1);
|
|
if (!(flags & AK4114_CHECK_NO_RATE) && runtime && runtime->rate != res) {
|
|
snd_pcm_stream_lock_irqsave(ak4114->capture_substream, _flags);
|
|
if (snd_pcm_running(ak4114->capture_substream)) {
|
|
// printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
|
|
snd_pcm_stop(ak4114->capture_substream, SNDRV_PCM_STATE_DRAINING);
|
|
res = 1;
|
|
}
|
|
snd_pcm_stream_unlock_irqrestore(ak4114->capture_substream, _flags);
|
|
}
|
|
return res;
|
|
}
|
|
EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);
|
|
|
|
static void ak4114_stats(struct work_struct *work)
|
|
{
|
|
struct ak4114 *chip = container_of(work, struct ak4114, work.work);
|
|
|
|
if (atomic_inc_return(&chip->wq_processing) == 1)
|
|
snd_ak4114_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_ak4114_suspend(struct ak4114 *chip)
|
|
{
|
|
atomic_inc(&chip->wq_processing); /* don't schedule new work */
|
|
cancel_delayed_work_sync(&chip->work);
|
|
}
|
|
EXPORT_SYMBOL(snd_ak4114_suspend);
|
|
|
|
void snd_ak4114_resume(struct ak4114 *chip)
|
|
{
|
|
atomic_dec(&chip->wq_processing);
|
|
snd_ak4114_reinit(chip);
|
|
}
|
|
EXPORT_SYMBOL(snd_ak4114_resume);
|
|
#endif
|