static int atmel_abdac_hw_free(struct snd_pcm_substream *substream)
{
struct atmel_abdac *dac = snd_pcm_substream_chip(substream);
if (test_and_clear_bit(DMA_READY, &dac->flags))
dw_dma_cyclic_free(dac->dma.chan);
return snd_pcm_lib_free_pages(substream);
}
static int atmel_ac97c_capture_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
int retval;
retval = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
if (cpu_is_at32ap7000()) {
if (retval < 0)
return retval;
/* snd_pcm_lib_malloc_pages returns 1 if buffer is changed. */
if (retval == 1)
if (test_and_clear_bit(DMA_RX_READY, &chip->flags))
dw_dma_cyclic_free(chip->dma.rx_chan);
}
/* Set restrictions to params. */
mutex_lock(&opened_mutex);
chip->cur_rate = params_rate(hw_params);
chip->cur_format = params_format(hw_params);
mutex_unlock(&opened_mutex);
return retval;
}
static int atmel_ac97c_capture_hw_free(struct snd_pcm_substream *substream)
{
struct atmel_ac97c *chip = snd_pcm_substream_chip(substream);
if (cpu_is_at32ap7000()) {
if (test_and_clear_bit(DMA_RX_READY, &chip->flags))
dw_dma_cyclic_free(chip->dma.rx_chan);
}
return snd_pcm_lib_free_pages(substream);
}
static int atmel_abdac_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *hw_params)
{
struct atmel_abdac *dac = snd_pcm_substream_chip(substream);
int retval;
retval = snd_pcm_lib_malloc_pages(substream,
params_buffer_bytes(hw_params));
if (retval < 0)
return retval;
/* snd_pcm_lib_malloc_pages returns 1 if buffer is changed. */
if (retval == 1)
if (test_and_clear_bit(DMA_READY, &dac->flags))
dw_dma_cyclic_free(dac->dma.chan);
return retval;
}
