573 lines
17 KiB
C
573 lines
17 KiB
C
|
/*
|
||
|
|
* Routines for control of the CS8427 via i2c bus
|
||
|
|
* IEC958 (S/PDIF) receiver & transmitter by Cirrus Logic
|
||
|
|
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <sound/driver.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/delay.h>
|
||
|
|
#include <linux/init.h>
|
||
|
|
#include <sound/core.h>
|
||
|
|
#include <sound/control.h>
|
||
|
|
#include <sound/pcm.h>
|
||
|
|
#include <sound/cs8427.h>
|
||
|
|
#include <sound/asoundef.h>
|
||
|
|
|
||
|
|
static void snd_cs8427_reset(snd_i2c_device_t *cs8427);
|
||
|
|
|
||
|
|
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
|
||
|
|
MODULE_DESCRIPTION("IEC958 (S/PDIF) receiver & transmitter by Cirrus Logic");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
|
||
|
|
#define CS8427_ADDR (0x20>>1) /* fixed address */
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
snd_pcm_substream_t *substream;
|
||
|
|
char hw_status[24]; /* hardware status */
|
||
|
|
char def_status[24]; /* default status */
|
||
|
|
char pcm_status[24]; /* PCM private status */
|
||
|
|
char hw_udata[32];
|
||
|
|
snd_kcontrol_t *pcm_ctl;
|
||
|
|
} cs8427_stream_t;
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
unsigned char regmap[0x14]; /* map of first 1 + 13 registers */
|
||
|
|
unsigned int rate;
|
||
|
|
unsigned int reset_timeout;
|
||
|
|
cs8427_stream_t playback;
|
||
|
|
cs8427_stream_t capture;
|
||
|
|
} cs8427_t;
|
||
|
|
|
||
|
|
static unsigned char swapbits(unsigned char val)
|
||
|
|
{
|
||
|
|
int bit;
|
||
|
|
unsigned char res = 0;
|
||
|
|
for (bit = 0; bit < 8; bit++) {
|
||
|
|
res <<= 1;
|
||
|
|
res |= val & 1;
|
||
|
|
val >>= 1;
|
||
|
|
}
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_cs8427_reg_write(snd_i2c_device_t *device, unsigned char reg, unsigned char val)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
unsigned char buf[2];
|
||
|
|
|
||
|
|
buf[0] = reg & 0x7f;
|
||
|
|
buf[1] = val;
|
||
|
|
if ((err = snd_i2c_sendbytes(device, buf, 2)) != 2) {
|
||
|
|
snd_printk("unable to send bytes 0x%02x:0x%02x to CS8427 (%i)\n", buf[0], buf[1], err);
|
||
|
|
return err < 0 ? err : -EIO;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_reg_read(snd_i2c_device_t *device, unsigned char reg)
|
||
|
|
{
|
||
|
|
int err;
|
||
|
|
unsigned char buf;
|
||
|
|
|
||
|
|
if ((err = snd_i2c_sendbytes(device, ®, 1)) != 1) {
|
||
|
|
snd_printk("unable to send register 0x%x byte to CS8427\n", reg);
|
||
|
|
return err < 0 ? err : -EIO;
|
||
|
|
}
|
||
|
|
if ((err = snd_i2c_readbytes(device, &buf, 1)) != 1) {
|
||
|
|
snd_printk("unable to read register 0x%x byte from CS8427\n", reg);
|
||
|
|
return err < 0 ? err : -EIO;
|
||
|
|
}
|
||
|
|
return buf;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_select_corudata(snd_i2c_device_t *device, int udata)
|
||
|
|
{
|
||
|
|
cs8427_t *chip = device->private_data;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
udata = udata ? CS8427_BSEL : 0;
|
||
|
|
if (udata != (chip->regmap[CS8427_REG_CSDATABUF] & udata)) {
|
||
|
|
chip->regmap[CS8427_REG_CSDATABUF] &= ~CS8427_BSEL;
|
||
|
|
chip->regmap[CS8427_REG_CSDATABUF] |= udata;
|
||
|
|
err = snd_cs8427_reg_write(device, CS8427_REG_CSDATABUF, chip->regmap[CS8427_REG_CSDATABUF]);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_send_corudata(snd_i2c_device_t *device,
|
||
|
|
int udata,
|
||
|
|
unsigned char *ndata,
|
||
|
|
int count)
|
||
|
|
{
|
||
|
|
cs8427_t *chip = device->private_data;
|
||
|
|
char *hw_data = udata ? chip->playback.hw_udata : chip->playback.hw_status;
|
||
|
|
char data[32];
|
||
|
|
int err, idx;
|
||
|
|
|
||
|
|
if (!memcmp(hw_data, ndata, count))
|
||
|
|
return 0;
|
||
|
|
if ((err = snd_cs8427_select_corudata(device, udata)) < 0)
|
||
|
|
return err;
|
||
|
|
memcpy(hw_data, ndata, count);
|
||
|
|
if (udata) {
|
||
|
|
memset(data, 0, sizeof(data));
|
||
|
|
if (memcmp(hw_data, data, count) == 0) {
|
||
|
|
chip->regmap[CS8427_REG_UDATABUF] &= ~CS8427_UBMMASK;
|
||
|
|
chip->regmap[CS8427_REG_UDATABUF] |= CS8427_UBMZEROS | CS8427_EFTUI;
|
||
|
|
if ((err = snd_cs8427_reg_write(device, CS8427_REG_UDATABUF, chip->regmap[CS8427_REG_UDATABUF])) < 0)
|
||
|
|
return err;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
data[0] = CS8427_REG_AUTOINC | CS8427_REG_CORU_DATABUF;
|
||
|
|
for (idx = 0; idx < count; idx++)
|
||
|
|
data[idx + 1] = swapbits(ndata[idx]);
|
||
|
|
if (snd_i2c_sendbytes(device, data, count + 1) != count + 1)
|
||
|
|
return -EIO;
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void snd_cs8427_free(snd_i2c_device_t *device)
|
||
|
|
{
|
||
|
|
kfree(device->private_data);
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_cs8427_create(snd_i2c_bus_t *bus,
|
||
|
|
unsigned char addr,
|
||
|
|
unsigned int reset_timeout,
|
||
|
|
snd_i2c_device_t **r_cs8427)
|
||
|
|
{
|
||
|
|
static unsigned char initvals1[] = {
|
||
|
|
CS8427_REG_CONTROL1 | CS8427_REG_AUTOINC,
|
||
|
|
/* CS8427_REG_CONTROL1: RMCK to OMCK, valid PCM audio, disable mutes, TCBL=output */
|
||
|
|
CS8427_SWCLK | CS8427_TCBLDIR,
|
||
|
|
/* CS8427_REG_CONTROL2: hold last valid audio sample, RMCK=256*Fs, normal stereo operation */
|
||
|
|
0x00,
|
||
|
|
/* CS8427_REG_DATAFLOW: output drivers normal operation, Tx<=serial, Rx=>serial */
|
||
|
|
CS8427_TXDSERIAL | CS8427_SPDAES3RECEIVER,
|
||
|
|
/* CS8427_REG_CLOCKSOURCE: Run off, CMCK=256*Fs, output time base = OMCK, input time base =
|
||
|
|
recovered input clock, recovered input clock source is ILRCK changed to AES3INPUT (workaround, see snd_cs8427_reset) */
|
||
|
|
CS8427_RXDILRCK,
|
||
|
|
/* CS8427_REG_SERIALINPUT: Serial audio input port data format = I2S, 24-bit, 64*Fsi */
|
||
|
|
CS8427_SIDEL | CS8427_SILRPOL,
|
||
|
|
/* CS8427_REG_SERIALOUTPUT: Serial audio output port data format = I2S, 24-bit, 64*Fsi */
|
||
|
|
CS8427_SODEL | CS8427_SOLRPOL,
|
||
|
|
};
|
||
|
|
static unsigned char initvals2[] = {
|
||
|
|
CS8427_REG_RECVERRMASK | CS8427_REG_AUTOINC,
|
||
|
|
/* CS8427_REG_RECVERRMASK: unmask the input PLL clock, V, confidence, biphase, parity status bits */
|
||
|
|
/* CS8427_UNLOCK | CS8427_V | CS8427_CONF | CS8427_BIP | CS8427_PAR, */
|
||
|
|
0xff, /* set everything */
|
||
|
|
/* CS8427_REG_CSDATABUF:
|
||
|
|
Registers 32-55 window to CS buffer
|
||
|
|
Inhibit D->E transfers from overwriting first 5 bytes of CS data.
|
||
|
|
Inhibit D->E transfers (all) of CS data.
|
||
|
|
Allow E->F transfer of CS data.
|
||
|
|
One byte mode; both A/B channels get same written CB data.
|
||
|
|
A channel info is output to chip's EMPH* pin. */
|
||
|
|
CS8427_CBMR | CS8427_DETCI,
|
||
|
|
/* CS8427_REG_UDATABUF:
|
||
|
|
Use internal buffer to transmit User (U) data.
|
||
|
|
Chip's U pin is an output.
|
||
|
|
Transmit all O's for user data.
|
||
|
|
Inhibit D->E transfers.
|
||
|
|
Inhibit E->F transfers. */
|
||
|
|
CS8427_UD | CS8427_EFTUI | CS8427_DETUI,
|
||
|
|
};
|
||
|
|
int err;
|
||
|
|
cs8427_t *chip;
|
||
|
|
snd_i2c_device_t *device;
|
||
|
|
unsigned char buf[24];
|
||
|
|
|
||
|
|
if ((err = snd_i2c_device_create(bus, "CS8427", CS8427_ADDR | (addr & 7), &device)) < 0)
|
||
|
|
return err;
|
||
|
|
chip = device->private_data = kcalloc(1, sizeof(*chip), GFP_KERNEL);
|
||
|
|
if (chip == NULL) {
|
||
|
|
snd_i2c_device_free(device);
|
||
|
|
return -ENOMEM;
|
||
|
|
}
|
||
|
|
device->private_free = snd_cs8427_free;
|
||
|
|
|
||
|
|
snd_i2c_lock(bus);
|
||
|
|
if ((err = snd_cs8427_reg_read(device, CS8427_REG_ID_AND_VER)) != CS8427_VER8427A) {
|
||
|
|
snd_i2c_unlock(bus);
|
||
|
|
snd_printk("unable to find CS8427 signature (expected 0x%x, read 0x%x), initialization is not completed\n", CS8427_VER8427A, err);
|
||
|
|
return -EFAULT;
|
||
|
|
}
|
||
|
|
/* turn off run bit while making changes to configuration */
|
||
|
|
if ((err = snd_cs8427_reg_write(device, CS8427_REG_CLOCKSOURCE, 0x00)) < 0)
|
||
|
|
goto __fail;
|
||
|
|
/* send initial values */
|
||
|
|
memcpy(chip->regmap + (initvals1[0] & 0x7f), initvals1 + 1, 6);
|
||
|
|
if ((err = snd_i2c_sendbytes(device, initvals1, 7)) != 7) {
|
||
|
|
err = err < 0 ? err : -EIO;
|
||
|
|
goto __fail;
|
||
|
|
}
|
||
|
|
/* Turn off CS8427 interrupt stuff that is not used in hardware */
|
||
|
|
memset(buf, 0, 7);
|
||
|
|
/* from address 9 to 15 */
|
||
|
|
buf[0] = 9; /* register */
|
||
|
|
if ((err = snd_i2c_sendbytes(device, buf, 7)) != 7)
|
||
|
|
goto __fail;
|
||
|
|
/* send transfer initialization sequence */
|
||
|
|
memcpy(chip->regmap + (initvals2[0] & 0x7f), initvals2 + 1, 3);
|
||
|
|
if ((err = snd_i2c_sendbytes(device, initvals2, 4)) != 4) {
|
||
|
|
err = err < 0 ? err : -EIO;
|
||
|
|
goto __fail;
|
||
|
|
}
|
||
|
|
/* write default channel status bytes */
|
||
|
|
buf[0] = ((unsigned char)(SNDRV_PCM_DEFAULT_CON_SPDIF >> 0));
|
||
|
|
buf[1] = ((unsigned char)(SNDRV_PCM_DEFAULT_CON_SPDIF >> 8));
|
||
|
|
buf[2] = ((unsigned char)(SNDRV_PCM_DEFAULT_CON_SPDIF >> 16));
|
||
|
|
buf[3] = ((unsigned char)(SNDRV_PCM_DEFAULT_CON_SPDIF >> 24));
|
||
|
|
memset(buf + 4, 0, 24 - 4);
|
||
|
|
if (snd_cs8427_send_corudata(device, 0, buf, 24) < 0)
|
||
|
|
goto __fail;
|
||
|
|
memcpy(chip->playback.def_status, buf, 24);
|
||
|
|
memcpy(chip->playback.pcm_status, buf, 24);
|
||
|
|
snd_i2c_unlock(bus);
|
||
|
|
|
||
|
|
/* turn on run bit and rock'n'roll */
|
||
|
|
if (reset_timeout < 1)
|
||
|
|
reset_timeout = 1;
|
||
|
|
chip->reset_timeout = reset_timeout;
|
||
|
|
snd_cs8427_reset(device);
|
||
|
|
|
||
|
|
#if 0 // it's nice for read tests
|
||
|
|
{
|
||
|
|
char buf[128];
|
||
|
|
int xx;
|
||
|
|
buf[0] = 0x81;
|
||
|
|
snd_i2c_sendbytes(device, buf, 1);
|
||
|
|
snd_i2c_readbytes(device, buf, 127);
|
||
|
|
for (xx = 0; xx < 127; xx++)
|
||
|
|
printk("reg[0x%x] = 0x%x\n", xx+1, buf[xx]);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
if (r_cs8427)
|
||
|
|
*r_cs8427 = device;
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
__fail:
|
||
|
|
snd_i2c_unlock(bus);
|
||
|
|
snd_i2c_device_free(device);
|
||
|
|
return err < 0 ? err : -EIO;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Reset the chip using run bit, also lock PLL using ILRCK and
|
||
|
|
* put back AES3INPUT. This workaround is described in latest
|
||
|
|
* CS8427 datasheet, otherwise TXDSERIAL will not work.
|
||
|
|
*/
|
||
|
|
static void snd_cs8427_reset(snd_i2c_device_t *cs8427)
|
||
|
|
{
|
||
|
|
cs8427_t *chip;
|
||
|
|
unsigned long end_time;
|
||
|
|
int data;
|
||
|
|
|
||
|
|
snd_assert(cs8427, return);
|
||
|
|
chip = cs8427->private_data;
|
||
|
|
snd_i2c_lock(cs8427->bus);
|
||
|
|
chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~(CS8427_RUN | CS8427_RXDMASK);
|
||
|
|
snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, chip->regmap[CS8427_REG_CLOCKSOURCE]);
|
||
|
|
udelay(200);
|
||
|
|
chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RUN | CS8427_RXDILRCK;
|
||
|
|
snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, chip->regmap[CS8427_REG_CLOCKSOURCE]);
|
||
|
|
udelay(200);
|
||
|
|
snd_i2c_unlock(cs8427->bus);
|
||
|
|
end_time = jiffies + chip->reset_timeout;
|
||
|
|
while (time_after_eq(end_time, jiffies)) {
|
||
|
|
snd_i2c_lock(cs8427->bus);
|
||
|
|
data = snd_cs8427_reg_read(cs8427, CS8427_REG_RECVERRORS);
|
||
|
|
snd_i2c_unlock(cs8427->bus);
|
||
|
|
if (!(data & CS8427_UNLOCK))
|
||
|
|
break;
|
||
|
|
set_current_state(TASK_UNINTERRUPTIBLE);
|
||
|
|
schedule_timeout(1);
|
||
|
|
}
|
||
|
|
snd_i2c_lock(cs8427->bus);
|
||
|
|
chip->regmap[CS8427_REG_CLOCKSOURCE] &= ~CS8427_RXDMASK;
|
||
|
|
chip->regmap[CS8427_REG_CLOCKSOURCE] |= CS8427_RXDAES3INPUT;
|
||
|
|
snd_cs8427_reg_write(cs8427, CS8427_REG_CLOCKSOURCE, chip->regmap[CS8427_REG_CLOCKSOURCE]);
|
||
|
|
snd_i2c_unlock(cs8427->bus);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_in_status_info(snd_kcontrol_t *kcontrol,
|
||
|
|
snd_ctl_elem_info_t *uinfo)
|
||
|
|
{
|
||
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
|
||
|
|
uinfo->count = 1;
|
||
|
|
uinfo->value.integer.min = 0;
|
||
|
|
uinfo->value.integer.max = 255;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_in_status_get(snd_kcontrol_t *kcontrol,
|
||
|
|
snd_ctl_elem_value_t *ucontrol)
|
||
|
|
{
|
||
|
|
snd_i2c_device_t *device = snd_kcontrol_chip(kcontrol);
|
||
|
|
int data;
|
||
|
|
|
||
|
|
snd_i2c_lock(device->bus);
|
||
|
|
data = snd_cs8427_reg_read(device, kcontrol->private_value);
|
||
|
|
snd_i2c_unlock(device->bus);
|
||
|
|
if (data < 0)
|
||
|
|
return data;
|
||
|
|
ucontrol->value.integer.value[0] = data;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_qsubcode_info(snd_kcontrol_t *kcontrol,
|
||
|
|
snd_ctl_elem_info_t *uinfo)
|
||
|
|
{
|
||
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
|
||
|
|
uinfo->count = 10;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_qsubcode_get(snd_kcontrol_t *kcontrol,
|
||
|
|
snd_ctl_elem_value_t *ucontrol)
|
||
|
|
{
|
||
|
|
snd_i2c_device_t *device = snd_kcontrol_chip(kcontrol);
|
||
|
|
unsigned char reg = CS8427_REG_QSUBCODE;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
snd_i2c_lock(device->bus);
|
||
|
|
if ((err = snd_i2c_sendbytes(device, ®, 1)) != 1) {
|
||
|
|
snd_printk("unable to send register 0x%x byte to CS8427\n", reg);
|
||
|
|
snd_i2c_unlock(device->bus);
|
||
|
|
return err < 0 ? err : -EIO;
|
||
|
|
}
|
||
|
|
if ((err = snd_i2c_readbytes(device, ucontrol->value.bytes.data, 10)) != 10) {
|
||
|
|
snd_printk("unable to read Q-subcode bytes from CS8427\n");
|
||
|
|
snd_i2c_unlock(device->bus);
|
||
|
|
return err < 0 ? err : -EIO;
|
||
|
|
}
|
||
|
|
snd_i2c_unlock(device->bus);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_spdif_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
|
||
|
|
{
|
||
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
|
||
|
|
uinfo->count = 1;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_spdif_get(snd_kcontrol_t * kcontrol,
|
||
|
|
snd_ctl_elem_value_t * ucontrol)
|
||
|
|
{
|
||
|
|
snd_i2c_device_t *device = snd_kcontrol_chip(kcontrol);
|
||
|
|
cs8427_t *chip = device->private_data;
|
||
|
|
|
||
|
|
snd_i2c_lock(device->bus);
|
||
|
|
memcpy(ucontrol->value.iec958.status, chip->playback.def_status, 24);
|
||
|
|
snd_i2c_unlock(device->bus);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_spdif_put(snd_kcontrol_t * kcontrol,
|
||
|
|
snd_ctl_elem_value_t * ucontrol)
|
||
|
|
{
|
||
|
|
snd_i2c_device_t *device = snd_kcontrol_chip(kcontrol);
|
||
|
|
cs8427_t *chip = device->private_data;
|
||
|
|
unsigned char *status = kcontrol->private_value ? chip->playback.pcm_status : chip->playback.def_status;
|
||
|
|
snd_pcm_runtime_t *runtime = chip->playback.substream ? chip->playback.substream->runtime : NULL;
|
||
|
|
int err, change;
|
||
|
|
|
||
|
|
snd_i2c_lock(device->bus);
|
||
|
|
change = memcmp(ucontrol->value.iec958.status, status, 24) != 0;
|
||
|
|
memcpy(status, ucontrol->value.iec958.status, 24);
|
||
|
|
if (change && (kcontrol->private_value ? runtime != NULL : runtime == NULL)) {
|
||
|
|
err = snd_cs8427_send_corudata(device, 0, status, 24);
|
||
|
|
if (err < 0)
|
||
|
|
change = err;
|
||
|
|
}
|
||
|
|
snd_i2c_unlock(device->bus);
|
||
|
|
return change;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_spdif_mask_info(snd_kcontrol_t *kcontrol, snd_ctl_elem_info_t * uinfo)
|
||
|
|
{
|
||
|
|
uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
|
||
|
|
uinfo->count = 1;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int snd_cs8427_spdif_mask_get(snd_kcontrol_t * kcontrol,
|
||
|
|
snd_ctl_elem_value_t * ucontrol)
|
||
|
|
{
|
||
|
|
memset(ucontrol->value.iec958.status, 0xff, 24);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static snd_kcontrol_new_t snd_cs8427_iec958_controls[] = {
|
||
|
|
{
|
||
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||
|
|
.info = snd_cs8427_in_status_info,
|
||
|
|
.name = "IEC958 CS8427 Input Status",
|
||
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
|
||
|
|
.get = snd_cs8427_in_status_get,
|
||
|
|
.private_value = 15,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||
|
|
.info = snd_cs8427_in_status_info,
|
||
|
|
.name = "IEC958 CS8427 Error Status",
|
||
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
|
||
|
|
.get = snd_cs8427_in_status_get,
|
||
|
|
.private_value = 16,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READ,
|
||
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||
|
|
.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
|
||
|
|
.info = snd_cs8427_spdif_mask_info,
|
||
|
|
.get = snd_cs8427_spdif_mask_get,
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||
|
|
.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
|
||
|
|
.info = snd_cs8427_spdif_info,
|
||
|
|
.get = snd_cs8427_spdif_get,
|
||
|
|
.put = snd_cs8427_spdif_put,
|
||
|
|
.private_value = 0
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE,
|
||
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||
|
|
.name = SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM),
|
||
|
|
.info = snd_cs8427_spdif_info,
|
||
|
|
.get = snd_cs8427_spdif_get,
|
||
|
|
.put = snd_cs8427_spdif_put,
|
||
|
|
.private_value = 1
|
||
|
|
},
|
||
|
|
{
|
||
|
|
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
|
||
|
|
.info = snd_cs8427_qsubcode_info,
|
||
|
|
.name = "IEC958 Q-subcode Capture Default",
|
||
|
|
.access = SNDRV_CTL_ELEM_ACCESS_READ | SNDRV_CTL_ELEM_ACCESS_VOLATILE,
|
||
|
|
.get = snd_cs8427_qsubcode_get
|
||
|
|
}};
|
||
|
|
|
||
|
|
int snd_cs8427_iec958_build(snd_i2c_device_t *cs8427,
|
||
|
|
snd_pcm_substream_t *play_substream,
|
||
|
|
snd_pcm_substream_t *cap_substream)
|
||
|
|
{
|
||
|
|
cs8427_t *chip = cs8427->private_data;
|
||
|
|
snd_kcontrol_t *kctl;
|
||
|
|
unsigned int idx;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
snd_assert(play_substream && cap_substream, return -EINVAL);
|
||
|
|
for (idx = 0; idx < ARRAY_SIZE(snd_cs8427_iec958_controls); idx++) {
|
||
|
|
kctl = snd_ctl_new1(&snd_cs8427_iec958_controls[idx], cs8427);
|
||
|
|
if (kctl == NULL)
|
||
|
|
return -ENOMEM;
|
||
|
|
kctl->id.device = play_substream->pcm->device;
|
||
|
|
kctl->id.subdevice = play_substream->number;
|
||
|
|
err = snd_ctl_add(cs8427->bus->card, kctl);
|
||
|
|
if (err < 0)
|
||
|
|
return err;
|
||
|
|
if (!strcmp(kctl->id.name, SNDRV_CTL_NAME_IEC958("",PLAYBACK,PCM_STREAM)))
|
||
|
|
chip->playback.pcm_ctl = kctl;
|
||
|
|
}
|
||
|
|
|
||
|
|
chip->playback.substream = play_substream;
|
||
|
|
chip->capture.substream = cap_substream;
|
||
|
|
snd_assert(chip->playback.pcm_ctl, return -EIO);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_cs8427_iec958_active(snd_i2c_device_t *cs8427, int active)
|
||
|
|
{
|
||
|
|
cs8427_t *chip;
|
||
|
|
|
||
|
|
snd_assert(cs8427, return -ENXIO);
|
||
|
|
chip = cs8427->private_data;
|
||
|
|
if (active)
|
||
|
|
memcpy(chip->playback.pcm_status, chip->playback.def_status, 24);
|
||
|
|
chip->playback.pcm_ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
|
||
|
|
snd_ctl_notify(cs8427->bus->card, SNDRV_CTL_EVENT_MASK_VALUE |
|
||
|
|
SNDRV_CTL_EVENT_MASK_INFO, &chip->playback.pcm_ctl->id);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
int snd_cs8427_iec958_pcm(snd_i2c_device_t *cs8427, unsigned int rate)
|
||
|
|
{
|
||
|
|
cs8427_t *chip;
|
||
|
|
char *status;
|
||
|
|
int err, reset;
|
||
|
|
|
||
|
|
snd_assert(cs8427, return -ENXIO);
|
||
|
|
chip = cs8427->private_data;
|
||
|
|
status = chip->playback.pcm_status;
|
||
|
|
snd_i2c_lock(cs8427->bus);
|
||
|
|
if (status[0] & IEC958_AES0_PROFESSIONAL) {
|
||
|
|
status[0] &= ~IEC958_AES0_PRO_FS;
|
||
|
|
switch (rate) {
|
||
|
|
case 32000: status[0] |= IEC958_AES0_PRO_FS_32000; break;
|
||
|
|
case 44100: status[0] |= IEC958_AES0_PRO_FS_44100; break;
|
||
|
|
case 48000: status[0] |= IEC958_AES0_PRO_FS_48000; break;
|
||
|
|
default: status[0] |= IEC958_AES0_PRO_FS_NOTID; break;
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
status[3] &= ~IEC958_AES3_CON_FS;
|
||
|
|
switch (rate) {
|
||
|
|
case 32000: status[3] |= IEC958_AES3_CON_FS_32000; break;
|
||
|
|
case 44100: status[3] |= IEC958_AES3_CON_FS_44100; break;
|
||
|
|
case 48000: status[3] |= IEC958_AES3_CON_FS_48000; break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
err = snd_cs8427_send_corudata(cs8427, 0, status, 24);
|
||
|
|
if (err > 0)
|
||
|
|
snd_ctl_notify(cs8427->bus->card,
|
||
|
|
SNDRV_CTL_EVENT_MASK_VALUE,
|
||
|
|
&chip->playback.pcm_ctl->id);
|
||
|
|
reset = chip->rate != rate;
|
||
|
|
chip->rate = rate;
|
||
|
|
snd_i2c_unlock(cs8427->bus);
|
||
|
|
if (reset)
|
||
|
|
snd_cs8427_reset(cs8427);
|
||
|
|
return err < 0 ? err : 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int __init alsa_cs8427_module_init(void)
|
||
|
|
{
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void __exit alsa_cs8427_module_exit(void)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
module_init(alsa_cs8427_module_init)
|
||
|
|
module_exit(alsa_cs8427_module_exit)
|
||
|
|
|
||
|
|
EXPORT_SYMBOL(snd_cs8427_create);
|
||
|
|
EXPORT_SYMBOL(snd_cs8427_reset);
|
||
|
|
EXPORT_SYMBOL(snd_cs8427_reg_write);
|
||
|
|
EXPORT_SYMBOL(snd_cs8427_iec958_build);
|
||
|
|
EXPORT_SYMBOL(snd_cs8427_iec958_active);
|
||
|
|
EXPORT_SYMBOL(snd_cs8427_iec958_pcm);
|