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linux/sound/isa/ad1848/ad1848_lib.c

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/*
* Copyright (c) by Jaroslav Kysela <perex@suse.cz>
* Routines for control of AD1848/AD1847/CS4248
*
*
* 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
*
*/
#define SNDRV_MAIN_OBJECT_FILE
#include <sound/driver.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <sound/core.h>
#include <sound/ad1848.h>
#include <sound/control.h>
#include <sound/tlv.h>
#include <sound/pcm_params.h>
#include <asm/io.h>
#include <asm/dma.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Routines for control of AD1848/AD1847/CS4248");
MODULE_LICENSE("GPL");
#if 0
#define SNDRV_DEBUG_MCE
#endif
/*
* Some variables
*/
static unsigned char freq_bits[14] = {
/* 5510 */ 0x00 | AD1848_XTAL2,
/* 6620 */ 0x0E | AD1848_XTAL2,
/* 8000 */ 0x00 | AD1848_XTAL1,
/* 9600 */ 0x0E | AD1848_XTAL1,
/* 11025 */ 0x02 | AD1848_XTAL2,
/* 16000 */ 0x02 | AD1848_XTAL1,
/* 18900 */ 0x04 | AD1848_XTAL2,
/* 22050 */ 0x06 | AD1848_XTAL2,
/* 27042 */ 0x04 | AD1848_XTAL1,
/* 32000 */ 0x06 | AD1848_XTAL1,
/* 33075 */ 0x0C | AD1848_XTAL2,
/* 37800 */ 0x08 | AD1848_XTAL2,
/* 44100 */ 0x0A | AD1848_XTAL2,
/* 48000 */ 0x0C | AD1848_XTAL1
};
static unsigned int rates[14] = {
5510, 6620, 8000, 9600, 11025, 16000, 18900, 22050,
27042, 32000, 33075, 37800, 44100, 48000
};
static struct snd_pcm_hw_constraint_list hw_constraints_rates = {
.count = 14,
.list = rates,
.mask = 0,
};
static unsigned char snd_ad1848_original_image[16] =
{
0x00, /* 00 - lic */
0x00, /* 01 - ric */
0x9f, /* 02 - la1ic */
0x9f, /* 03 - ra1ic */
0x9f, /* 04 - la2ic */
0x9f, /* 05 - ra2ic */
0xbf, /* 06 - loc */
0xbf, /* 07 - roc */
0x20, /* 08 - dfr */
AD1848_AUTOCALIB, /* 09 - ic */
0x00, /* 0a - pc */
0x00, /* 0b - ti */
0x00, /* 0c - mi */
0x00, /* 0d - lbc */
0x00, /* 0e - dru */
0x00, /* 0f - drl */
};
/*
* Basic I/O functions
*/
void snd_ad1848_out(struct snd_ad1848 *chip,
unsigned char reg,
unsigned char value)
{
int timeout;
for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
snd_printk(KERN_WARNING "auto calibration time out - reg = 0x%x, value = 0x%x\n", reg, value);
#endif
outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
outb(chip->image[reg] = value, AD1848P(chip, REG));
mb();
#if 0
printk("codec out - reg 0x%x = 0x%x\n", chip->mce_bit | reg, value);
#endif
}
EXPORT_SYMBOL(snd_ad1848_out);
static void snd_ad1848_dout(struct snd_ad1848 *chip,
unsigned char reg, unsigned char value)
{
int timeout;
for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
udelay(100);
outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
outb(value, AD1848P(chip, REG));
mb();
}
static unsigned char snd_ad1848_in(struct snd_ad1848 *chip, unsigned char reg)
{
int timeout;
for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
snd_printk(KERN_WARNING "auto calibration time out - reg = 0x%x\n", reg);
#endif
outb(chip->mce_bit | reg, AD1848P(chip, REGSEL));
mb();
return inb(AD1848P(chip, REG));
}
#if 0
static void snd_ad1848_debug(struct snd_ad1848 *chip)
{
printk("AD1848 REGS: INDEX = 0x%02x ", inb(AD1848P(chip, REGSEL)));
printk(" STATUS = 0x%02x\n", inb(AD1848P(chip, STATUS)));
printk(" 0x00: left input = 0x%02x ", snd_ad1848_in(chip, 0x00));
printk(" 0x08: playback format = 0x%02x\n", snd_ad1848_in(chip, 0x08));
printk(" 0x01: right input = 0x%02x ", snd_ad1848_in(chip, 0x01));
printk(" 0x09: iface (CFIG 1) = 0x%02x\n", snd_ad1848_in(chip, 0x09));
printk(" 0x02: AUXA left = 0x%02x ", snd_ad1848_in(chip, 0x02));
printk(" 0x0a: pin control = 0x%02x\n", snd_ad1848_in(chip, 0x0a));
printk(" 0x03: AUXA right = 0x%02x ", snd_ad1848_in(chip, 0x03));
printk(" 0x0b: init & status = 0x%02x\n", snd_ad1848_in(chip, 0x0b));
printk(" 0x04: AUXB left = 0x%02x ", snd_ad1848_in(chip, 0x04));
printk(" 0x0c: revision & mode = 0x%02x\n", snd_ad1848_in(chip, 0x0c));
printk(" 0x05: AUXB right = 0x%02x ", snd_ad1848_in(chip, 0x05));
printk(" 0x0d: loopback = 0x%02x\n", snd_ad1848_in(chip, 0x0d));
printk(" 0x06: left output = 0x%02x ", snd_ad1848_in(chip, 0x06));
printk(" 0x0e: data upr count = 0x%02x\n", snd_ad1848_in(chip, 0x0e));
printk(" 0x07: right output = 0x%02x ", snd_ad1848_in(chip, 0x07));
printk(" 0x0f: data lwr count = 0x%02x\n", snd_ad1848_in(chip, 0x0f));
}
#endif
/*
* AD1848 detection / MCE routines
*/
static void snd_ad1848_mce_up(struct snd_ad1848 *chip)
{
unsigned long flags;
int timeout;
for (timeout = 250; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
udelay(100);
#ifdef CONFIG_SND_DEBUG
if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
snd_printk(KERN_WARNING "mce_up - auto calibration time out (0)\n");
#endif
spin_lock_irqsave(&chip->reg_lock, flags);
chip->mce_bit |= AD1848_MCE;
timeout = inb(AD1848P(chip, REGSEL));
if (timeout == 0x80)
snd_printk(KERN_WARNING "mce_up [0x%lx]: serious init problem - codec still busy\n", chip->port);
if (!(timeout & AD1848_MCE))
outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static void snd_ad1848_mce_down(struct snd_ad1848 *chip)
{
unsigned long flags;
int timeout;
signed long time;
spin_lock_irqsave(&chip->reg_lock, flags);
for (timeout = 5; timeout > 0; timeout--)
inb(AD1848P(chip, REGSEL));
/* end of cleanup sequence */
for (timeout = 12000; timeout > 0 && (inb(AD1848P(chip, REGSEL)) & AD1848_INIT); timeout--)
udelay(100);
#if 0
printk("(1) timeout = %i\n", timeout);
#endif
#ifdef CONFIG_SND_DEBUG
if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
snd_printk(KERN_WARNING "mce_down [0x%lx] - auto calibration time out (0)\n", AD1848P(chip, REGSEL));
#endif
chip->mce_bit &= ~AD1848_MCE;
timeout = inb(AD1848P(chip, REGSEL));
outb(chip->mce_bit | (timeout & 0x1f), AD1848P(chip, REGSEL));
if (timeout == 0x80)
snd_printk(KERN_WARNING "mce_down [0x%lx]: serious init problem - codec still busy\n", chip->port);
if ((timeout & AD1848_MCE) == 0) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
return;
}
/* calibration process */
for (timeout = 500; timeout > 0 && (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0; timeout--);
if ((snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) == 0) {
snd_printd("mce_down - auto calibration time out (1)\n");
spin_unlock_irqrestore(&chip->reg_lock, flags);
return;
}
#if 0
printk("(2) timeout = %i, jiffies = %li\n", timeout, jiffies);
#endif
time = HZ / 4;
while (snd_ad1848_in(chip, AD1848_TEST_INIT) & AD1848_CALIB_IN_PROGRESS) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (time <= 0) {
snd_printk(KERN_ERR "mce_down - auto calibration time out (2)\n");
return;
}
time = schedule_timeout_interruptible(time);
spin_lock_irqsave(&chip->reg_lock, flags);
}
#if 0
printk("(3) jiffies = %li\n", jiffies);
#endif
time = HZ / 10;
while (inb(AD1848P(chip, REGSEL)) & AD1848_INIT) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (time <= 0) {
snd_printk(KERN_ERR "mce_down - auto calibration time out (3)\n");
return;
}
time = schedule_timeout_interruptible(time);
spin_lock_irqsave(&chip->reg_lock, flags);
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
#if 0
printk("(4) jiffies = %li\n", jiffies);
snd_printk("mce_down - exit = 0x%x\n", inb(AD1848P(chip, REGSEL)));
#endif
}
static unsigned int snd_ad1848_get_count(unsigned char format,
unsigned int size)
{
switch (format & 0xe0) {
case AD1848_LINEAR_16:
size >>= 1;
break;
}
if (format & AD1848_STEREO)
size >>= 1;
return size;
}
static int snd_ad1848_trigger(struct snd_ad1848 *chip, unsigned char what,
int channel, int cmd)
{
int result = 0;
#if 0
printk("codec trigger!!! - what = %i, enable = %i, status = 0x%x\n", what, enable, inb(AD1848P(card, STATUS)));
#endif
spin_lock(&chip->reg_lock);
if (cmd == SNDRV_PCM_TRIGGER_START) {
if (chip->image[AD1848_IFACE_CTRL] & what) {
spin_unlock(&chip->reg_lock);
return 0;
}
snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] |= what);
chip->mode |= AD1848_MODE_RUNNING;
} else if (cmd == SNDRV_PCM_TRIGGER_STOP) {
if (!(chip->image[AD1848_IFACE_CTRL] & what)) {
spin_unlock(&chip->reg_lock);
return 0;
}
snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL] &= ~what);
chip->mode &= ~AD1848_MODE_RUNNING;
} else {
result = -EINVAL;
}
spin_unlock(&chip->reg_lock);
return result;
}
/*
* CODEC I/O
*/
static unsigned char snd_ad1848_get_rate(unsigned int rate)
{
int i;
for (i = 0; i < 14; i++)
if (rate == rates[i])
return freq_bits[i];
snd_BUG();
return freq_bits[13];
}
static int snd_ad1848_ioctl(struct snd_pcm_substream *substream,
unsigned int cmd, void *arg)
{
return snd_pcm_lib_ioctl(substream, cmd, arg);
}
static unsigned char snd_ad1848_get_format(int format, int channels)
{
unsigned char rformat;
rformat = AD1848_LINEAR_8;
switch (format) {
case SNDRV_PCM_FORMAT_A_LAW: rformat = AD1848_ALAW_8; break;
case SNDRV_PCM_FORMAT_MU_LAW: rformat = AD1848_ULAW_8; break;
case SNDRV_PCM_FORMAT_S16_LE: rformat = AD1848_LINEAR_16; break;
}
if (channels > 1)
rformat |= AD1848_STEREO;
#if 0
snd_printk("get_format: 0x%x (mode=0x%x)\n", format, mode);
#endif
return rformat;
}
static void snd_ad1848_calibrate_mute(struct snd_ad1848 *chip, int mute)
{
unsigned long flags;
mute = mute ? 1 : 0;
spin_lock_irqsave(&chip->reg_lock, flags);
if (chip->calibrate_mute == mute) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
return;
}
if (!mute) {
snd_ad1848_dout(chip, AD1848_LEFT_INPUT, chip->image[AD1848_LEFT_INPUT]);
snd_ad1848_dout(chip, AD1848_RIGHT_INPUT, chip->image[AD1848_RIGHT_INPUT]);
}
snd_ad1848_dout(chip, AD1848_AUX1_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_LEFT_INPUT]);
snd_ad1848_dout(chip, AD1848_AUX1_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX1_RIGHT_INPUT]);
snd_ad1848_dout(chip, AD1848_AUX2_LEFT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_LEFT_INPUT]);
snd_ad1848_dout(chip, AD1848_AUX2_RIGHT_INPUT, mute ? 0x80 : chip->image[AD1848_AUX2_RIGHT_INPUT]);
snd_ad1848_dout(chip, AD1848_LEFT_OUTPUT, mute ? 0x80 : chip->image[AD1848_LEFT_OUTPUT]);
snd_ad1848_dout(chip, AD1848_RIGHT_OUTPUT, mute ? 0x80 : chip->image[AD1848_RIGHT_OUTPUT]);
chip->calibrate_mute = mute;
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
static void snd_ad1848_set_data_format(struct snd_ad1848 *chip, struct snd_pcm_hw_params *hw_params)
{
if (hw_params == NULL) {
chip->image[AD1848_DATA_FORMAT] = 0x20;
} else {
chip->image[AD1848_DATA_FORMAT] =
snd_ad1848_get_format(params_format(hw_params), params_channels(hw_params)) |
snd_ad1848_get_rate(params_rate(hw_params));
}
// snd_printk(">>> pmode = 0x%x, dfr = 0x%x\n", pstr->mode, chip->image[AD1848_DATA_FORMAT]);
}
static int snd_ad1848_open(struct snd_ad1848 *chip, unsigned int mode)
{
unsigned long flags;
mutex_lock(&chip->open_mutex);
if (chip->mode & AD1848_MODE_OPEN) {
mutex_unlock(&chip->open_mutex);
return -EAGAIN;
}
snd_ad1848_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printk("open: (1)\n");
#endif
snd_ad1848_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO |
AD1848_CALIB_MODE);
chip->image[AD1848_IFACE_CTRL] |= AD1848_AUTOCALIB;
snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printk("open: (2)\n");
#endif
snd_ad1848_set_data_format(chip, NULL);
snd_ad1848_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_down(chip);
#ifdef SNDRV_DEBUG_MCE
snd_printk("open: (3)\n");
#endif
/* ok. now enable and ack CODEC IRQ */
spin_lock_irqsave(&chip->reg_lock, flags);
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
chip->image[AD1848_PIN_CTRL] |= AD1848_IRQ_ENABLE;
snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
chip->mode = mode;
mutex_unlock(&chip->open_mutex);
return 0;
}
static void snd_ad1848_close(struct snd_ad1848 *chip)
{
unsigned long flags;
mutex_lock(&chip->open_mutex);
if (!chip->mode) {
mutex_unlock(&chip->open_mutex);
return;
}
/* disable IRQ */
spin_lock_irqsave(&chip->reg_lock, flags);
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
chip->image[AD1848_PIN_CTRL] &= ~AD1848_IRQ_ENABLE;
snd_ad1848_out(chip, AD1848_PIN_CTRL, chip->image[AD1848_PIN_CTRL]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
/* now disable capture & playback */
snd_ad1848_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO |
AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
snd_ad1848_out(chip, AD1848_IFACE_CTRL, chip->image[AD1848_IFACE_CTRL]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_down(chip);
/* clear IRQ again */
spin_lock_irqsave(&chip->reg_lock, flags);
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
outb(0, AD1848P(chip, STATUS)); /* clear IRQ */
spin_unlock_irqrestore(&chip->reg_lock, flags);
chip->mode = 0;
mutex_unlock(&chip->open_mutex);
}
/*
* ok.. exported functions..
*/
static int snd_ad1848_playback_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
return snd_ad1848_trigger(chip, AD1848_PLAYBACK_ENABLE, SNDRV_PCM_STREAM_PLAYBACK, cmd);
}
static int snd_ad1848_capture_trigger(struct snd_pcm_substream *substream,
int cmd)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
return snd_ad1848_trigger(chip, AD1848_CAPTURE_ENABLE, SNDRV_PCM_STREAM_CAPTURE, cmd);
}
static int snd_ad1848_playback_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
unsigned long flags;
int err;
if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
return err;
snd_ad1848_calibrate_mute(chip, 1);
snd_ad1848_set_data_format(chip, hw_params);
snd_ad1848_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_down(chip);
snd_ad1848_calibrate_mute(chip, 0);
return 0;
}
static int snd_ad1848_playback_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
static int snd_ad1848_playback_prepare(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long flags;
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
unsigned int count = snd_pcm_lib_period_bytes(substream);
chip->dma_size = size;
chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_PLAYBACK_ENABLE | AD1848_PLAYBACK_PIO);
snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static int snd_ad1848_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
unsigned long flags;
int err;
if ((err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params))) < 0)
return err;
snd_ad1848_calibrate_mute(chip, 1);
snd_ad1848_set_data_format(chip, hw_params);
snd_ad1848_mce_up(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_DATA_FORMAT, chip->image[AD1848_DATA_FORMAT]);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_down(chip);
snd_ad1848_calibrate_mute(chip, 0);
return 0;
}
static int snd_ad1848_capture_hw_free(struct snd_pcm_substream *substream)
{
return snd_pcm_lib_free_pages(substream);
}
static int snd_ad1848_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned long flags;
unsigned int size = snd_pcm_lib_buffer_bytes(substream);
unsigned int count = snd_pcm_lib_period_bytes(substream);
chip->dma_size = size;
chip->image[AD1848_IFACE_CTRL] &= ~(AD1848_CAPTURE_ENABLE | AD1848_CAPTURE_PIO);
snd_dma_program(chip->dma, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
count = snd_ad1848_get_count(chip->image[AD1848_DATA_FORMAT], count) - 1;
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_DATA_LWR_CNT, (unsigned char) count);
snd_ad1848_out(chip, AD1848_DATA_UPR_CNT, (unsigned char) (count >> 8));
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static irqreturn_t snd_ad1848_interrupt(int irq, void *dev_id)
{
struct snd_ad1848 *chip = dev_id;
if ((chip->mode & AD1848_MODE_PLAY) && chip->playback_substream &&
(chip->mode & AD1848_MODE_RUNNING))
snd_pcm_period_elapsed(chip->playback_substream);
if ((chip->mode & AD1848_MODE_CAPTURE) && chip->capture_substream &&
(chip->mode & AD1848_MODE_RUNNING))
snd_pcm_period_elapsed(chip->capture_substream);
outb(0, AD1848P(chip, STATUS)); /* clear global interrupt bit */
return IRQ_HANDLED;
}
static snd_pcm_uframes_t snd_ad1848_playback_pointer(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
size_t ptr;
if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_PLAYBACK_ENABLE))
return 0;
ptr = snd_dma_pointer(chip->dma, chip->dma_size);
return bytes_to_frames(substream->runtime, ptr);
}
static snd_pcm_uframes_t snd_ad1848_capture_pointer(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
size_t ptr;
if (!(chip->image[AD1848_IFACE_CTRL] & AD1848_CAPTURE_ENABLE))
return 0;
ptr = snd_dma_pointer(chip->dma, chip->dma_size);
return bytes_to_frames(substream->runtime, ptr);
}
/*
*/
static void snd_ad1848_thinkpad_twiddle(struct snd_ad1848 *chip, int on) {
int tmp;
if (!chip->thinkpad_flag) return;
outb(0x1c, AD1848_THINKPAD_CTL_PORT1);
tmp = inb(AD1848_THINKPAD_CTL_PORT2);
if (on)
/* turn it on */
tmp |= AD1848_THINKPAD_CS4248_ENABLE_BIT;
else
/* turn it off */
tmp &= ~AD1848_THINKPAD_CS4248_ENABLE_BIT;
outb(tmp, AD1848_THINKPAD_CTL_PORT2);
}
#ifdef CONFIG_PM
static void snd_ad1848_suspend(struct snd_ad1848 *chip)
{
snd_pcm_suspend_all(chip->pcm);
if (chip->thinkpad_flag)
snd_ad1848_thinkpad_twiddle(chip, 0);
}
static void snd_ad1848_resume(struct snd_ad1848 *chip)
{
int i;
if (chip->thinkpad_flag)
snd_ad1848_thinkpad_twiddle(chip, 1);
/* clear any pendings IRQ */
inb(AD1848P(chip, STATUS));
outb(0, AD1848P(chip, STATUS));
mb();
snd_ad1848_mce_down(chip);
for (i = 0; i < 16; i++)
snd_ad1848_out(chip, i, chip->image[i]);
snd_ad1848_mce_up(chip);
snd_ad1848_mce_down(chip);
}
#endif /* CONFIG_PM */
static int snd_ad1848_probe(struct snd_ad1848 * chip)
{
unsigned long flags;
int i, id, rev, ad1847;
unsigned char *ptr;
#if 0
snd_ad1848_debug(chip);
#endif
id = ad1847 = 0;
for (i = 0; i < 1000; i++) {
mb();
if (inb(AD1848P(chip, REGSEL)) & AD1848_INIT)
udelay(500);
else {
spin_lock_irqsave(&chip->reg_lock, flags);
snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
snd_ad1848_out(chip, AD1848_LEFT_INPUT, 0xaa);
snd_ad1848_out(chip, AD1848_RIGHT_INPUT, 0x45);
rev = snd_ad1848_in(chip, AD1848_RIGHT_INPUT);
if (rev == 0x65) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
id = 1;
ad1847 = 1;
break;
}
if (snd_ad1848_in(chip, AD1848_LEFT_INPUT) == 0xaa && rev == 0x45) {
spin_unlock_irqrestore(&chip->reg_lock, flags);
id = 1;
break;
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
}
}
if (id != 1)
return -ENODEV; /* no valid device found */
if (chip->hardware == AD1848_HW_DETECT) {
if (ad1847) {
chip->hardware = AD1848_HW_AD1847;
} else {
chip->hardware = AD1848_HW_AD1848;
rev = snd_ad1848_in(chip, AD1848_MISC_INFO);
if (rev & 0x80) {
chip->hardware = AD1848_HW_CS4248;
} else if ((rev & 0x0f) == 0x0a) {
snd_ad1848_out(chip, AD1848_MISC_INFO, 0x40);
for (i = 0; i < 16; ++i) {
if (snd_ad1848_in(chip, i) != snd_ad1848_in(chip, i + 16)) {
chip->hardware = AD1848_HW_CMI8330;
break;
}
}
snd_ad1848_out(chip, AD1848_MISC_INFO, 0x00);
}
}
}
spin_lock_irqsave(&chip->reg_lock, flags);
inb(AD1848P(chip, STATUS)); /* clear any pendings IRQ */
outb(0, AD1848P(chip, STATUS));
mb();
spin_unlock_irqrestore(&chip->reg_lock, flags);
chip->image[AD1848_MISC_INFO] = 0x00;
chip->image[AD1848_IFACE_CTRL] =
(chip->image[AD1848_IFACE_CTRL] & ~AD1848_SINGLE_DMA) | AD1848_SINGLE_DMA;
ptr = (unsigned char *) &chip->image;
snd_ad1848_mce_down(chip);
spin_lock_irqsave(&chip->reg_lock, flags);
for (i = 0; i < 16; i++) /* ok.. fill all AD1848 registers */
snd_ad1848_out(chip, i, *ptr++);
spin_unlock_irqrestore(&chip->reg_lock, flags);
snd_ad1848_mce_up(chip);
snd_ad1848_mce_down(chip);
return 0; /* all things are ok.. */
}
/*
*/
static struct snd_pcm_hardware snd_ad1848_playback =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
.rates = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
.rate_min = 5510,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = (128*1024),
.period_bytes_min = 64,
.period_bytes_max = (128*1024),
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
static struct snd_pcm_hardware snd_ad1848_capture =
{
.info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_MMAP_VALID),
.formats = (SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW |
SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE),
.rates = SNDRV_PCM_RATE_KNOT | SNDRV_PCM_RATE_8000_48000,
.rate_min = 5510,
.rate_max = 48000,
.channels_min = 1,
.channels_max = 2,
.buffer_bytes_max = (128*1024),
.period_bytes_min = 64,
.period_bytes_max = (128*1024),
.periods_min = 1,
.periods_max = 1024,
.fifo_size = 0,
};
/*
*/
static int snd_ad1848_playback_open(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
if ((err = snd_ad1848_open(chip, AD1848_MODE_PLAY)) < 0)
return err;
chip->playback_substream = substream;
runtime->hw = snd_ad1848_playback;
snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
return 0;
}
static int snd_ad1848_capture_open(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
int err;
if ((err = snd_ad1848_open(chip, AD1848_MODE_CAPTURE)) < 0)
return err;
chip->capture_substream = substream;
runtime->hw = snd_ad1848_capture;
snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.buffer_bytes_max);
snd_pcm_limit_isa_dma_size(chip->dma, &runtime->hw.period_bytes_max);
snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
return 0;
}
static int snd_ad1848_playback_close(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
chip->mode &= ~AD1848_MODE_PLAY;
chip->playback_substream = NULL;
snd_ad1848_close(chip);
return 0;
}
static int snd_ad1848_capture_close(struct snd_pcm_substream *substream)
{
struct snd_ad1848 *chip = snd_pcm_substream_chip(substream);
chip->mode &= ~AD1848_MODE_CAPTURE;
chip->capture_substream = NULL;
snd_ad1848_close(chip);
return 0;
}
static int snd_ad1848_free(struct snd_ad1848 *chip)
{
release_and_free_resource(chip->res_port);
if (chip->irq >= 0)
free_irq(chip->irq, (void *) chip);
if (chip->dma >= 0) {
snd_dma_disable(chip->dma);
free_dma(chip->dma);
}
kfree(chip);
return 0;
}
static int snd_ad1848_dev_free(struct snd_device *device)
{
struct snd_ad1848 *chip = device->device_data;
return snd_ad1848_free(chip);
}
static const char *snd_ad1848_chip_id(struct snd_ad1848 *chip)
{
switch (chip->hardware) {
case AD1848_HW_AD1847: return "AD1847";
case AD1848_HW_AD1848: return "AD1848";
case AD1848_HW_CS4248: return "CS4248";
case AD1848_HW_CMI8330: return "CMI8330/C3D";
default: return "???";
}
}
int snd_ad1848_create(struct snd_card *card,
unsigned long port,
int irq, int dma,
unsigned short hardware,
struct snd_ad1848 ** rchip)
{
static struct snd_device_ops ops = {
.dev_free = snd_ad1848_dev_free,
};
struct snd_ad1848 *chip;
int err;
*rchip = NULL;
chip = kzalloc(sizeof(*chip), GFP_KERNEL);
if (chip == NULL)
return -ENOMEM;
spin_lock_init(&chip->reg_lock);
mutex_init(&chip->open_mutex);
chip->card = card;
chip->port = port;
chip->irq = -1;
chip->dma = -1;
chip->hardware = hardware;
memcpy(&chip->image, &snd_ad1848_original_image, sizeof(snd_ad1848_original_image));
if ((chip->res_port = request_region(port, 4, "AD1848")) == NULL) {
snd_printk(KERN_ERR "ad1848: can't grab port 0x%lx\n", port);
snd_ad1848_free(chip);
return -EBUSY;
}
if (request_irq(irq, snd_ad1848_interrupt, IRQF_DISABLED, "AD1848", (void *) chip)) {
snd_printk(KERN_ERR "ad1848: can't grab IRQ %d\n", irq);
snd_ad1848_free(chip);
return -EBUSY;
}
chip->irq = irq;
if (request_dma(dma, "AD1848")) {
snd_printk(KERN_ERR "ad1848: can't grab DMA %d\n", dma);
snd_ad1848_free(chip);
return -EBUSY;
}
chip->dma = dma;
if (hardware == AD1848_HW_THINKPAD) {
chip->thinkpad_flag = 1;
chip->hardware = AD1848_HW_DETECT; /* reset */
snd_ad1848_thinkpad_twiddle(chip, 1);
}
if (snd_ad1848_probe(chip) < 0) {
snd_ad1848_free(chip);
return -ENODEV;
}
/* Register device */
if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
snd_ad1848_free(chip);
return err;
}
#ifdef CONFIG_PM
chip->suspend = snd_ad1848_suspend;
chip->resume = snd_ad1848_resume;
#endif
*rchip = chip;
return 0;
}
EXPORT_SYMBOL(snd_ad1848_create);
static struct snd_pcm_ops snd_ad1848_playback_ops = {
.open = snd_ad1848_playback_open,
.close = snd_ad1848_playback_close,
.ioctl = snd_ad1848_ioctl,
.hw_params = snd_ad1848_playback_hw_params,
.hw_free = snd_ad1848_playback_hw_free,
.prepare = snd_ad1848_playback_prepare,
.trigger = snd_ad1848_playback_trigger,
.pointer = snd_ad1848_playback_pointer,
};
static struct snd_pcm_ops snd_ad1848_capture_ops = {
.open = snd_ad1848_capture_open,
.close = snd_ad1848_capture_close,
.ioctl = snd_ad1848_ioctl,
.hw_params = snd_ad1848_capture_hw_params,
.hw_free = snd_ad1848_capture_hw_free,
.prepare = snd_ad1848_capture_prepare,
.trigger = snd_ad1848_capture_trigger,
.pointer = snd_ad1848_capture_pointer,
};
int snd_ad1848_pcm(struct snd_ad1848 *chip, int device, struct snd_pcm **rpcm)
{
struct snd_pcm *pcm;
int err;
if ((err = snd_pcm_new(chip->card, "AD1848", device, 1, 1, &pcm)) < 0)
return err;
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ad1848_playback_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ad1848_capture_ops);
pcm->private_data = chip;
pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
strcpy(pcm->name, snd_ad1848_chip_id(chip));
snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
snd_dma_isa_data(),
64*1024, chip->dma > 3 ? 128*1024 : 64*1024);
chip->pcm = pcm;
if (rpcm)
*rpcm = pcm;
return 0;
}
EXPORT_SYMBOL(snd_ad1848_pcm);
const struct snd_pcm_ops *snd_ad1848_get_pcm_ops(int direction)
{
return direction == SNDRV_PCM_STREAM_PLAYBACK ?
&snd_ad1848_playback_ops : &snd_ad1848_capture_ops;
}
EXPORT_SYMBOL(snd_ad1848_get_pcm_ops);
/*
* MIXER part
*/
static int snd_ad1848_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
static char *texts[4] = {
"Line", "Aux", "Mic", "Mix"
};
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 2;
uinfo->value.enumerated.items = 4;
if (uinfo->value.enumerated.item > 3)
uinfo->value.enumerated.item = 3;
strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
return 0;
}
static int snd_ad1848_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
spin_lock_irqsave(&chip->reg_lock, flags);
ucontrol->value.enumerated.item[0] = (chip->image[AD1848_LEFT_INPUT] & AD1848_MIXS_ALL) >> 6;
ucontrol->value.enumerated.item[1] = (chip->image[AD1848_RIGHT_INPUT] & AD1848_MIXS_ALL) >> 6;
spin_unlock_irqrestore(&chip->reg_lock, flags);
return 0;
}
static int snd_ad1848_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
unsigned short left, right;
int change;
if (ucontrol->value.enumerated.item[0] > 3 ||
ucontrol->value.enumerated.item[1] > 3)
return -EINVAL;
left = ucontrol->value.enumerated.item[0] << 6;
right = ucontrol->value.enumerated.item[1] << 6;
spin_lock_irqsave(&chip->reg_lock, flags);
left = (chip->image[AD1848_LEFT_INPUT] & ~AD1848_MIXS_ALL) | left;
right = (chip->image[AD1848_RIGHT_INPUT] & ~AD1848_MIXS_ALL) | right;
change = left != chip->image[AD1848_LEFT_INPUT] ||
right != chip->image[AD1848_RIGHT_INPUT];
snd_ad1848_out(chip, AD1848_LEFT_INPUT, left);
snd_ad1848_out(chip, AD1848_RIGHT_INPUT, right);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
static int snd_ad1848_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
int mask = (kcontrol->private_value >> 16) & 0xff;
uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 1;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = mask;
return 0;
}
static int snd_ad1848_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int reg = kcontrol->private_value & 0xff;
int shift = (kcontrol->private_value >> 8) & 0xff;
int mask = (kcontrol->private_value >> 16) & 0xff;
int invert = (kcontrol->private_value >> 24) & 0xff;
spin_lock_irqsave(&chip->reg_lock, flags);
ucontrol->value.integer.value[0] = (chip->image[reg] >> shift) & mask;
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (invert)
ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
return 0;
}
static int snd_ad1848_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int reg = kcontrol->private_value & 0xff;
int shift = (kcontrol->private_value >> 8) & 0xff;
int mask = (kcontrol->private_value >> 16) & 0xff;
int invert = (kcontrol->private_value >> 24) & 0xff;
int change;
unsigned short val;
val = (ucontrol->value.integer.value[0] & mask);
if (invert)
val = mask - val;
val <<= shift;
spin_lock_irqsave(&chip->reg_lock, flags);
val = (chip->image[reg] & ~(mask << shift)) | val;
change = val != chip->image[reg];
snd_ad1848_out(chip, reg, val);
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
static int snd_ad1848_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
int mask = (kcontrol->private_value >> 24) & 0xff;
uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
uinfo->count = 2;
uinfo->value.integer.min = 0;
uinfo->value.integer.max = mask;
return 0;
}
static int snd_ad1848_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int left_reg = kcontrol->private_value & 0xff;
int right_reg = (kcontrol->private_value >> 8) & 0xff;
int shift_left = (kcontrol->private_value >> 16) & 0x07;
int shift_right = (kcontrol->private_value >> 19) & 0x07;
int mask = (kcontrol->private_value >> 24) & 0xff;
int invert = (kcontrol->private_value >> 22) & 1;
spin_lock_irqsave(&chip->reg_lock, flags);
ucontrol->value.integer.value[0] = (chip->image[left_reg] >> shift_left) & mask;
ucontrol->value.integer.value[1] = (chip->image[right_reg] >> shift_right) & mask;
spin_unlock_irqrestore(&chip->reg_lock, flags);
if (invert) {
ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
}
return 0;
}
static int snd_ad1848_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1848 *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int left_reg = kcontrol->private_value & 0xff;
int right_reg = (kcontrol->private_value >> 8) & 0xff;
int shift_left = (kcontrol->private_value >> 16) & 0x07;
int shift_right = (kcontrol->private_value >> 19) & 0x07;
int mask = (kcontrol->private_value >> 24) & 0xff;
int invert = (kcontrol->private_value >> 22) & 1;
int change;
unsigned short val1, val2;
val1 = ucontrol->value.integer.value[0] & mask;
val2 = ucontrol->value.integer.value[1] & mask;
if (invert) {
val1 = mask - val1;
val2 = mask - val2;
}
val1 <<= shift_left;
val2 <<= shift_right;
spin_lock_irqsave(&chip->reg_lock, flags);
if (left_reg != right_reg) {
val1 = (chip->image[left_reg] & ~(mask << shift_left)) | val1;
val2 = (chip->image[right_reg] & ~(mask << shift_right)) | val2;
change = val1 != chip->image[left_reg] || val2 != chip->image[right_reg];
snd_ad1848_out(chip, left_reg, val1);
snd_ad1848_out(chip, right_reg, val2);
} else {
val1 = (chip->image[left_reg] & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
change = val1 != chip->image[left_reg];
snd_ad1848_out(chip, left_reg, val1);
}
spin_unlock_irqrestore(&chip->reg_lock, flags);
return change;
}
/*
*/
int snd_ad1848_add_ctl_elem(struct snd_ad1848 *chip,
const struct ad1848_mix_elem *c)
{
static struct snd_kcontrol_new newctls[] = {
[AD1848_MIX_SINGLE] = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.info = snd_ad1848_info_single,
.get = snd_ad1848_get_single,
.put = snd_ad1848_put_single,
},
[AD1848_MIX_DOUBLE] = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.info = snd_ad1848_info_double,
.get = snd_ad1848_get_double,
.put = snd_ad1848_put_double,
},
[AD1848_MIX_CAPTURE] = {
.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
.info = snd_ad1848_info_mux,
.get = snd_ad1848_get_mux,
.put = snd_ad1848_put_mux,
},
};
struct snd_kcontrol *ctl;
int err;
ctl = snd_ctl_new1(&newctls[c->type], chip);
if (! ctl)
return -ENOMEM;
strlcpy(ctl->id.name, c->name, sizeof(ctl->id.name));
ctl->id.index = c->index;
ctl->private_value = c->private_value;
if (c->tlv) {
ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_TLV_READ;
ctl->tlv.p = c->tlv;
}
if ((err = snd_ctl_add(chip->card, ctl)) < 0)
return err;
return 0;
}
EXPORT_SYMBOL(snd_ad1848_add_ctl_elem);
static const DECLARE_TLV_DB_SCALE(db_scale_6bit, -9450, 150, 0);
static const DECLARE_TLV_DB_SCALE(db_scale_5bit_12db_max, -3450, 150, 0);
static const DECLARE_TLV_DB_SCALE(db_scale_rec_gain, 0, 150, 0);
static struct ad1848_mix_elem snd_ad1848_controls[] = {
AD1848_DOUBLE("PCM Playback Switch", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 7, 7, 1, 1),
AD1848_DOUBLE_TLV("PCM Playback Volume", 0, AD1848_LEFT_OUTPUT, AD1848_RIGHT_OUTPUT, 0, 0, 63, 1,
db_scale_6bit),
AD1848_DOUBLE("Aux Playback Switch", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 7, 7, 1, 1),
AD1848_DOUBLE_TLV("Aux Playback Volume", 0, AD1848_AUX1_LEFT_INPUT, AD1848_AUX1_RIGHT_INPUT, 0, 0, 31, 1,
db_scale_5bit_12db_max),
AD1848_DOUBLE("Aux Playback Switch", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 7, 7, 1, 1),
AD1848_DOUBLE_TLV("Aux Playback Volume", 1, AD1848_AUX2_LEFT_INPUT, AD1848_AUX2_RIGHT_INPUT, 0, 0, 31, 1,
db_scale_5bit_12db_max),
AD1848_DOUBLE_TLV("Capture Volume", 0, AD1848_LEFT_INPUT, AD1848_RIGHT_INPUT, 0, 0, 15, 0,
db_scale_rec_gain),
{
.name = "Capture Source",
.type = AD1848_MIX_CAPTURE,
},
AD1848_SINGLE("Loopback Capture Switch", 0, AD1848_LOOPBACK, 0, 1, 0),
AD1848_SINGLE_TLV("Loopback Capture Volume", 0, AD1848_LOOPBACK, 1, 63, 0,
db_scale_6bit),
};
int snd_ad1848_mixer(struct snd_ad1848 *chip)
{
struct snd_card *card;
struct snd_pcm *pcm;
unsigned int idx;
int err;
snd_assert(chip != NULL && chip->pcm != NULL, return -EINVAL);
pcm = chip->pcm;
card = chip->card;
strcpy(card->mixername, pcm->name);
for (idx = 0; idx < ARRAY_SIZE(snd_ad1848_controls); idx++)
if ((err = snd_ad1848_add_ctl_elem(chip, &snd_ad1848_controls[idx])) < 0)
return err;
return 0;
}
EXPORT_SYMBOL(snd_ad1848_mixer);
/*
* INIT part
*/
static int __init alsa_ad1848_init(void)
{
return 0;
}
static void __exit alsa_ad1848_exit(void)
{
}
module_init(alsa_ad1848_init)
module_exit(alsa_ad1848_exit)
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