static int snd_ad1816a_capture_prepare(struct snd_pcm_substream *substream)
{
struct snd_ad1816a *chip = snd_pcm_substream_chip(substream);
unsigned long flags;
struct snd_pcm_runtime *runtime = substream->runtime;
unsigned int size, rate;
spin_lock_irqsave(&chip->lock, flags);
chip->c_dma_size = size = snd_pcm_lib_buffer_bytes(substream);
snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
AD1816A_CAPTURE_ENABLE | AD1816A_CAPTURE_PIO, 0x00);
snd_dma_program(chip->dma2, runtime->dma_addr, size,
DMA_MODE_READ | DMA_AUTOINIT);
rate = runtime->rate;
if (chip->clock_freq)
rate = (rate * 33000) / chip->clock_freq;
snd_ad1816a_write(chip, AD1816A_CAPTURE_SAMPLE_RATE, rate);
snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
snd_ad1816a_get_format(chip, runtime->format,
runtime->channels));
snd_ad1816a_write(chip, AD1816A_CAPTURE_BASE_COUNT,
snd_pcm_lib_period_bytes(substream) / 4 - 1);
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static int snd_ad1816a_playback_prepare(snd_pcm_substream_t *substream)
{
ad1816a_t *chip = snd_pcm_substream_chip(substream);
unsigned long flags;
snd_pcm_runtime_t *runtime = substream->runtime;
unsigned int size;
spin_lock_irqsave(&chip->lock, flags);
chip->p_dma_size = size = snd_pcm_lib_buffer_bytes(substream);
snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
AD1816A_PLAYBACK_ENABLE | AD1816A_PLAYBACK_PIO, 0x00);
snd_dma_program(chip->dma1, runtime->dma_addr, size,
DMA_MODE_WRITE | DMA_AUTOINIT);
snd_ad1816a_write(chip, AD1816A_PLAYBACK_SAMPLE_RATE, runtime->rate);
snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
AD1816A_FMT_ALL | AD1816A_FMT_STEREO,
snd_ad1816a_get_format(chip, runtime->format,
runtime->channels));
snd_ad1816a_write(chip, AD1816A_PLAYBACK_BASE_COUNT,
snd_pcm_lib_period_bytes(substream) / 4 - 1);
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static int snd_ad1816a_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
int reg = kcontrol->private_value & 0xff;
int shift_left = (kcontrol->private_value >> 8) & 0x0f;
int shift_right = (kcontrol->private_value >> 12) & 0x0f;
int mask = (kcontrol->private_value >> 16) & 0xff;
int invert = (kcontrol->private_value >> 24) & 0xff;
int change;
unsigned short old_val, 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->lock, flags);
old_val = snd_ad1816a_read(chip, reg);
val1 = (old_val & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
change = val1 != old_val;
snd_ad1816a_write(chip, reg, val1);
spin_unlock_irqrestore(&chip->lock, flags);
return change;
}
static void __devinit snd_ad1816a_init(struct snd_ad1816a *chip)
{
unsigned long flags;
spin_lock_irqsave(&chip->lock, flags);
snd_ad1816a_out(chip, AD1816A_INTERRUPT_STATUS, 0x00);
snd_ad1816a_out_mask(chip, AD1816A_PLAYBACK_CONFIG,
AD1816A_PLAYBACK_ENABLE | AD1816A_PLAYBACK_PIO, 0x00);
snd_ad1816a_out_mask(chip, AD1816A_CAPTURE_CONFIG,
AD1816A_CAPTURE_ENABLE | AD1816A_CAPTURE_PIO, 0x00);
snd_ad1816a_write(chip, AD1816A_INTERRUPT_ENABLE, 0x0000);
snd_ad1816a_write_mask(chip, AD1816A_CHIP_CONFIG,
AD1816A_CAPTURE_NOT_EQUAL | AD1816A_WSS_ENABLE, 0xffff);
snd_ad1816a_write(chip, AD1816A_DSP_CONFIG, 0x0000);
snd_ad1816a_write(chip, AD1816A_POWERDOWN_CTRL, 0x0000);
spin_unlock_irqrestore(&chip->lock, flags);
}
void snd_ad1816a_resume(struct snd_ad1816a *chip)
{
int reg;
unsigned long flags;
snd_ad1816a_init(chip);
spin_lock_irqsave(&chip->lock, flags);
for (reg = 0; reg < 48; reg++)
snd_ad1816a_write(chip, reg, chip->image[reg]);
spin_unlock_irqrestore(&chip->lock, flags);
}
static int snd_ad1816a_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1816a *chip = snd_kcontrol_chip(kcontrol);
unsigned long flags;
unsigned short val;
int change;
if (ucontrol->value.enumerated.item[0] > 6 ||
ucontrol->value.enumerated.item[1] > 6)
return -EINVAL;
val = (ucontrol->value.enumerated.item[0] << 12) |
(ucontrol->value.enumerated.item[1] << 4);
spin_lock_irqsave(&chip->lock, flags);
change = snd_ad1816a_read(chip, AD1816A_ADC_SOURCE_SEL) != val;
snd_ad1816a_write(chip, AD1816A_ADC_SOURCE_SEL, val);
spin_unlock_irqrestore(&chip->lock, flags);
return change;
}
static int snd_ad1816a_timer_start(struct snd_timer *timer)
{
unsigned short bits;
unsigned long flags;
struct snd_ad1816a *chip = snd_timer_chip(timer);
spin_lock_irqsave(&chip->lock, flags);
bits = snd_ad1816a_read(chip, AD1816A_INTERRUPT_ENABLE);
if (!(bits & AD1816A_TIMER_ENABLE)) {
snd_ad1816a_write(chip, AD1816A_TIMER_BASE_COUNT,
timer->sticks & 0xffff);
snd_ad1816a_write_mask(chip, AD1816A_INTERRUPT_ENABLE,
AD1816A_TIMER_ENABLE, 0xffff);
}
spin_unlock_irqrestore(&chip->lock, flags);
return 0;
}
static int snd_ad1816a_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_ad1816a *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 old_val, val;
val = (ucontrol->value.integer.value[0] & mask);
if (invert)
val = mask - val;
val <<= shift;
spin_lock_irqsave(&chip->lock, flags);
old_val = snd_ad1816a_read(chip, reg);
val = (old_val & ~(mask << shift)) | val;
change = val != old_val;
snd_ad1816a_write(chip, reg, val);
spin_unlock_irqrestore(&chip->lock, flags);
return change;
}
static void snd_ad1816a_write_mask(struct snd_ad1816a *chip, unsigned char reg,
unsigned short mask, unsigned short value)
{
snd_ad1816a_write(chip, reg,
(value & mask) | (snd_ad1816a_read(chip, reg) & ~mask));
}
