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linux_dsm_epyc7002/sound/i2c/other/ak4117.c
Thomas Gleixner 1a59d1b8e0 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details you
  should have received a copy of the gnu general public license along
  with this program if not write to the free software foundation inc
  59 temple place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1334 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:35 -07:00

533 lines
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Routines for control of the AK4117 via 4-wire serial interface
* IEC958 (S/PDIF) receiver by Asahi Kasei
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*/
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/pcm.h>
#include <sound/ak4117.h>
#include <sound/asoundef.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("AK4117 IEC958 (S/PDIF) receiver by Asahi Kasei");
MODULE_LICENSE("GPL");
#define AK4117_ADDR 0x00 /* fixed address */
static void snd_ak4117_timer(struct timer_list *t);
static void reg_write(struct ak4117 *ak4117, unsigned char reg, unsigned char val)
{
ak4117->write(ak4117->private_data, reg, val);
if (reg < sizeof(ak4117->regmap))
ak4117->regmap[reg] = val;
}
static inline unsigned char reg_read(struct ak4117 *ak4117, unsigned char reg)
{
return ak4117->read(ak4117->private_data, reg);
}
#if 0
static void reg_dump(struct ak4117 *ak4117)
{
int i;
printk(KERN_DEBUG "AK4117 REG DUMP:\n");
for (i = 0; i < 0x1b; i++)
printk(KERN_DEBUG "reg[%02x] = %02x (%02x)\n", i, reg_read(ak4117, i), i < sizeof(ak4117->regmap) ? ak4117->regmap[i] : 0);
}
#endif
static void snd_ak4117_free(struct ak4117 *chip)
{
del_timer_sync(&chip->timer);
kfree(chip);
}
static int snd_ak4117_dev_free(struct snd_device *device)
{
struct ak4117 *chip = device->device_data;
snd_ak4117_free(chip);
return 0;
}
int snd_ak4117_create(struct snd_card *card, ak4117_read_t *read, ak4117_write_t *write,
const unsigned char pgm[5], void *private_data, struct ak4117 **r_ak4117)
{
struct ak4117 *chip;
int err = 0;
unsigned char reg;
static struct snd_device_ops ops = {
.dev_free = snd_ak4117_dev_free,
};
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
spin_lock_init(&chip->lock);
chip->card = card;
chip->read = read;
chip->write = write;
chip->private_data = private_data;
timer_setup(&chip->timer, snd_ak4117_timer, 0);
for (reg = 0; reg < 5; reg++)
chip->regmap[reg] = pgm[reg];
snd_ak4117_reinit(chip);
chip->rcs0 = reg_read(chip, AK4117_REG_RCS0) & ~(AK4117_QINT | AK4117_CINT | AK4117_STC);
chip->rcs1 = reg_read(chip, AK4117_REG_RCS1);
chip->rcs2 = reg_read(chip, AK4117_REG_RCS2);
if ((err = snd_device_new(card, SNDRV_DEV_CODEC, chip, &ops)) < 0)
goto __fail;
if (r_ak4117)
*r_ak4117 = chip;
return 0;
__fail:
snd_ak4117_free(chip);
return err;
}
void snd_ak4117_reg_write(struct ak4117 *chip, unsigned char reg, unsigned char mask, unsigned char val)
{
if (reg >= 5)
return;
reg_write(chip, reg, (chip->regmap[reg] & ~mask) | val);
}
void snd_ak4117_reinit(struct ak4117 *chip)
{
unsigned char old = chip->regmap[AK4117_REG_PWRDN], reg;
del_timer(&chip->timer);
chip->init = 1;
/* bring the chip to reset state and powerdown state */
reg_write(chip, AK4117_REG_PWRDN, 0);
udelay(200);
/* release reset, but leave powerdown */
reg_write(chip, AK4117_REG_PWRDN, (old | AK4117_RST) & ~AK4117_PWN);
udelay(200);
for (reg = 1; reg < 5; reg++)
reg_write(chip, reg, chip->regmap[reg]);
/* release powerdown, everything is initialized now */
reg_write(chip, AK4117_REG_PWRDN, old | AK4117_RST | AK4117_PWN);
chip->init = 0;
mod_timer(&chip->timer, 1 + jiffies);
}
static unsigned int external_rate(unsigned char rcs1)
{
switch (rcs1 & (AK4117_FS0|AK4117_FS1|AK4117_FS2|AK4117_FS3)) {
case AK4117_FS_32000HZ: return 32000;
case AK4117_FS_44100HZ: return 44100;
case AK4117_FS_48000HZ: return 48000;
case AK4117_FS_88200HZ: return 88200;
case AK4117_FS_96000HZ: return 96000;
case AK4117_FS_176400HZ: return 176400;
case AK4117_FS_192000HZ: return 192000;
default: return 0;
}
}
static int snd_ak4117_in_error_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = LONG_MAX;
return 0;
}
static int snd_ak4117_in_error_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
spin_lock_irq(&chip->lock);
ucontrol->value.integer.value[0] =
chip->errors[kcontrol->private_value];
chip->errors[kcontrol->private_value] = 0;
spin_unlock_irq(&chip->lock);
return 0;
}
#define snd_ak4117_in_bit_info snd_ctl_boolean_mono_info
static int snd_ak4117_in_bit_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
unsigned char reg = kcontrol->private_value & 0xff;
unsigned char bit = (kcontrol->private_value >> 8) & 0xff;
unsigned char inv = (kcontrol->private_value >> 31) & 1;
ucontrol->value.integer.value[0] = ((reg_read(chip, reg) & (1 << bit)) ? 1 : 0) ^ inv;
return 0;
}
static int snd_ak4117_rx_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 1;
return 0;
}
static int snd_ak4117_rx_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0] = (chip->regmap[AK4117_REG_IO] & AK4117_IPS) ? 1 : 0;
return 0;
}
static int snd_ak4117_rx_put(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
int change;
u8 old_val;
spin_lock_irq(&chip->lock);
old_val = chip->regmap[AK4117_REG_IO];
change = !!ucontrol->value.integer.value[0] != ((old_val & AK4117_IPS) ? 1 : 0);
if (change)
reg_write(chip, AK4117_REG_IO, (old_val & ~AK4117_IPS) | (ucontrol->value.integer.value[0] ? AK4117_IPS : 0));
spin_unlock_irq(&chip->lock);
return change;
}
static int snd_ak4117_rate_info(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 192000;
return 0;
}
static int snd_ak4117_rate_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
ucontrol->value.integer.value[0] = external_rate(reg_read(chip, AK4117_REG_RCS1));
return 0;
}
static int snd_ak4117_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
uinfo->count = 1;
return 0;
}
static int snd_ak4117_spdif_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
unsigned i;
for (i = 0; i < AK4117_REG_RXCSB_SIZE; i++)
ucontrol->value.iec958.status[i] = reg_read(chip, AK4117_REG_RXCSB0 + i);
return 0;
}
static int snd_ak4117_spdif_mask_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
uinfo->count = 1;
return 0;
}
static int snd_ak4117_spdif_mask_get(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
memset(ucontrol->value.iec958.status, 0xff, AK4117_REG_RXCSB_SIZE);
return 0;
}
static int snd_ak4117_spdif_pinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = 0xffff;
uinfo->count = 4;
return 0;
}
static int snd_ak4117_spdif_pget(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
unsigned short tmp;
ucontrol->value.integer.value[0] = 0xf8f2;
ucontrol->value.integer.value[1] = 0x4e1f;
tmp = reg_read(chip, AK4117_REG_Pc0) | (reg_read(chip, AK4117_REG_Pc1) << 8);
ucontrol->value.integer.value[2] = tmp;
tmp = reg_read(chip, AK4117_REG_Pd0) | (reg_read(chip, AK4117_REG_Pd1) << 8);
ucontrol->value.integer.value[3] = tmp;
return 0;
}
static int snd_ak4117_spdif_qinfo(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
uinfo->count = AK4117_REG_QSUB_SIZE;
return 0;
}
static int snd_ak4117_spdif_qget(struct snd_kcontrol *kcontrol,
struct snd_ctl_elem_value *ucontrol)
{
struct ak4117 *chip = snd_kcontrol_chip(kcontrol);
unsigned i;
for (i = 0; i < AK4117_REG_QSUB_SIZE; i++)
ucontrol->value.bytes.data[i] = reg_read(chip, AK4117_REG_QSUB_ADDR + i);
return 0;
}
/* Don't forget to change AK4117_CONTROLS define!!! */
static struct snd_kcontrol_new snd_ak4117_iec958_controls[] = {
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 Parity Errors",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_error_info,
.get = snd_ak4117_in_error_get,
.private_value = AK4117_PARITY_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 V-Bit Errors",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_error_info,
.get = snd_ak4117_in_error_get,
.private_value = AK4117_V_BIT_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 C-CRC Errors",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_error_info,
.get = snd_ak4117_in_error_get,
.private_value = AK4117_CCRC_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 Q-CRC Errors",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_error_info,
.get = snd_ak4117_in_error_get,
.private_value = AK4117_QCRC_ERRORS,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 External Rate",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_rate_info,
.get = snd_ak4117_rate_get,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = SNDRV_CTL_NAME_IEC958("",CAPTURE,MASK),
.access = SNDRV_CTL_ELEM_ACCESS_READ,
.info = snd_ak4117_spdif_mask_info,
.get = snd_ak4117_spdif_mask_get,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = SNDRV_CTL_NAME_IEC958("",CAPTURE,DEFAULT),
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_spdif_info,
.get = snd_ak4117_spdif_get,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 Preamble Capture Default",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_spdif_pinfo,
.get = snd_ak4117_spdif_pget,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 Q-subcode Capture Default",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_spdif_qinfo,
.get = snd_ak4117_spdif_qget,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 Audio",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_bit_info,
.get = snd_ak4117_in_bit_get,
.private_value = (1<<31) | (3<<8) | AK4117_REG_RCS0,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 Non-PCM Bitstream",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_bit_info,
.get = snd_ak4117_in_bit_get,
.private_value = (5<<8) | AK4117_REG_RCS1,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "IEC958 DTS Bitstream",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = snd_ak4117_in_bit_info,
.get = snd_ak4117_in_bit_get,
.private_value = (6<<8) | AK4117_REG_RCS1,
},
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "AK4117 Input Select",
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_WRITE,
.info = snd_ak4117_rx_info,
.get = snd_ak4117_rx_get,
.put = snd_ak4117_rx_put,
}
};
int snd_ak4117_build(struct ak4117 *ak4117, struct snd_pcm_substream *cap_substream)
{
struct snd_kcontrol *kctl;
unsigned int idx;
int err;
if (snd_BUG_ON(!cap_substream))
return -EINVAL;
ak4117->substream = cap_substream;
for (idx = 0; idx < AK4117_CONTROLS; idx++) {
kctl = snd_ctl_new1(&snd_ak4117_iec958_controls[idx], ak4117);
if (kctl == NULL)
return -ENOMEM;
kctl->id.device = cap_substream->pcm->device;
kctl->id.subdevice = cap_substream->number;
err = snd_ctl_add(ak4117->card, kctl);
if (err < 0)
return err;
ak4117->kctls[idx] = kctl;
}
return 0;
}
int snd_ak4117_external_rate(struct ak4117 *ak4117)
{
unsigned char rcs1;
rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
return external_rate(rcs1);
}
int snd_ak4117_check_rate_and_errors(struct ak4117 *ak4117, unsigned int flags)
{
struct snd_pcm_runtime *runtime = ak4117->substream ? ak4117->substream->runtime : NULL;
unsigned long _flags;
int res = 0;
unsigned char rcs0, rcs1, rcs2;
unsigned char c0, c1;
rcs1 = reg_read(ak4117, AK4117_REG_RCS1);
if (flags & AK4117_CHECK_NO_STAT)
goto __rate;
rcs0 = reg_read(ak4117, AK4117_REG_RCS0);
rcs2 = reg_read(ak4117, AK4117_REG_RCS2);
// printk(KERN_DEBUG "AK IRQ: rcs0 = 0x%x, rcs1 = 0x%x, rcs2 = 0x%x\n", rcs0, rcs1, rcs2);
spin_lock_irqsave(&ak4117->lock, _flags);
if (rcs0 & AK4117_PAR)
ak4117->errors[AK4117_PARITY_ERRORS]++;
if (rcs0 & AK4117_V)
ak4117->errors[AK4117_V_BIT_ERRORS]++;
if (rcs2 & AK4117_CCRC)
ak4117->errors[AK4117_CCRC_ERRORS]++;
if (rcs2 & AK4117_QCRC)
ak4117->errors[AK4117_QCRC_ERRORS]++;
c0 = (ak4117->rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK)) ^
(rcs0 & (AK4117_QINT | AK4117_CINT | AK4117_STC | AK4117_AUDION | AK4117_AUTO | AK4117_UNLCK));
c1 = (ak4117->rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f)) ^
(rcs1 & (AK4117_DTSCD | AK4117_NPCM | AK4117_PEM | 0x0f));
ak4117->rcs0 = rcs0 & ~(AK4117_QINT | AK4117_CINT | AK4117_STC);
ak4117->rcs1 = rcs1;
ak4117->rcs2 = rcs2;
spin_unlock_irqrestore(&ak4117->lock, _flags);
if (rcs0 & AK4117_PAR)
snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[0]->id);
if (rcs0 & AK4117_V)
snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[1]->id);
if (rcs2 & AK4117_CCRC)
snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[2]->id);
if (rcs2 & AK4117_QCRC)
snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[3]->id);
/* rate change */
if (c1 & 0x0f)
snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[4]->id);
if ((c1 & AK4117_PEM) | (c0 & AK4117_CINT))
snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[6]->id);
if (c0 & AK4117_QINT)
snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[8]->id);
if (c0 & AK4117_AUDION)
snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[9]->id);
if (c1 & AK4117_NPCM)
snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[10]->id);
if (c1 & AK4117_DTSCD)
snd_ctl_notify(ak4117->card, SNDRV_CTL_EVENT_MASK_VALUE, &ak4117->kctls[11]->id);
if (ak4117->change_callback && (c0 | c1) != 0)
ak4117->change_callback(ak4117, c0, c1);
__rate:
/* compare rate */
res = external_rate(rcs1);
if (!(flags & AK4117_CHECK_NO_RATE) && runtime && runtime->rate != res) {
snd_pcm_stream_lock_irqsave(ak4117->substream, _flags);
if (snd_pcm_running(ak4117->substream)) {
// printk(KERN_DEBUG "rate changed (%i <- %i)\n", runtime->rate, res);
snd_pcm_stop(ak4117->substream, SNDRV_PCM_STATE_DRAINING);
wake_up(&runtime->sleep);
res = 1;
}
snd_pcm_stream_unlock_irqrestore(ak4117->substream, _flags);
}
return res;
}
static void snd_ak4117_timer(struct timer_list *t)
{
struct ak4117 *chip = from_timer(chip, t, timer);
if (chip->init)
return;
snd_ak4117_check_rate_and_errors(chip, 0);
mod_timer(&chip->timer, 1 + jiffies);
}
EXPORT_SYMBOL(snd_ak4117_create);
EXPORT_SYMBOL(snd_ak4117_reg_write);
EXPORT_SYMBOL(snd_ak4117_reinit);
EXPORT_SYMBOL(snd_ak4117_build);
EXPORT_SYMBOL(snd_ak4117_external_rate);
EXPORT_SYMBOL(snd_ak4117_check_rate_and_errors);
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