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Diffstat (limited to 'sound/soc/dwc/designware_i2s.c')
-rw-r--r--sound/soc/dwc/designware_i2s.c14
1 files changed, 10 insertions, 4 deletions
diff --git a/sound/soc/dwc/designware_i2s.c b/sound/soc/dwc/designware_i2s.c
index bff258d7b..0db69b7e9 100644
--- a/sound/soc/dwc/designware_i2s.c
+++ b/sound/soc/dwc/designware_i2s.c
@@ -100,6 +100,7 @@ struct dw_i2s_dev {
struct device *dev;
u32 ccr;
u32 xfer_resolution;
+ u32 fifo_th;
/* data related to DMA transfers b/w i2s and DMAC */
union dw_i2s_snd_dma_data play_dma_data;
@@ -147,17 +148,18 @@ static inline void i2s_clear_irqs(struct dw_i2s_dev *dev, u32 stream)
static void i2s_start(struct dw_i2s_dev *dev,
struct snd_pcm_substream *substream)
{
+ struct i2s_clk_config_data *config = &dev->config;
u32 i, irq;
i2s_write_reg(dev->i2s_base, IER, 1);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < (config->chan_nr / 2); i++) {
irq = i2s_read_reg(dev->i2s_base, IMR(i));
i2s_write_reg(dev->i2s_base, IMR(i), irq & ~0x30);
}
i2s_write_reg(dev->i2s_base, ITER, 1);
} else {
- for (i = 0; i < 4; i++) {
+ for (i = 0; i < (config->chan_nr / 2); i++) {
irq = i2s_read_reg(dev->i2s_base, IMR(i));
i2s_write_reg(dev->i2s_base, IMR(i), irq & ~0x03);
}
@@ -231,14 +233,16 @@ static void dw_i2s_config(struct dw_i2s_dev *dev, int stream)
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
i2s_write_reg(dev->i2s_base, TCR(ch_reg),
dev->xfer_resolution);
- i2s_write_reg(dev->i2s_base, TFCR(ch_reg), 0x02);
+ i2s_write_reg(dev->i2s_base, TFCR(ch_reg),
+ dev->fifo_th - 1);
irq = i2s_read_reg(dev->i2s_base, IMR(ch_reg));
i2s_write_reg(dev->i2s_base, IMR(ch_reg), irq & ~0x30);
i2s_write_reg(dev->i2s_base, TER(ch_reg), 1);
} else {
i2s_write_reg(dev->i2s_base, RCR(ch_reg),
dev->xfer_resolution);
- i2s_write_reg(dev->i2s_base, RFCR(ch_reg), 0x07);
+ i2s_write_reg(dev->i2s_base, RFCR(ch_reg),
+ dev->fifo_th - 1);
irq = i2s_read_reg(dev->i2s_base, IMR(ch_reg));
i2s_write_reg(dev->i2s_base, IMR(ch_reg), irq & ~0x03);
i2s_write_reg(dev->i2s_base, RER(ch_reg), 1);
@@ -498,6 +502,7 @@ static int dw_configure_dai(struct dw_i2s_dev *dev,
*/
u32 comp1 = i2s_read_reg(dev->i2s_base, dev->i2s_reg_comp1);
u32 comp2 = i2s_read_reg(dev->i2s_base, dev->i2s_reg_comp2);
+ u32 fifo_depth = 1 << (1 + COMP1_FIFO_DEPTH_GLOBAL(comp1));
u32 idx;
if (dev->capability & DWC_I2S_RECORD &&
@@ -536,6 +541,7 @@ static int dw_configure_dai(struct dw_i2s_dev *dev,
dev->capability |= DW_I2S_SLAVE;
}
+ dev->fifo_th = fifo_depth / 2;
return 0;
}