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ASoC: amd: add ACP3x TDM mode support

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ACP3x I2S (CPU DAI) can act in normal I2S and TDM modes. Added support
for TDM mode. Desired mode can be selected from ASoC machine driver.

Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati@amd.com>
Link: https://lore.kernel.org/r/1577540460-21438-4-git-send-email-Vishnuvardhanrao.Ravulapati@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Ravulapati Vishnu vardhan rao 2019-12-28 19:10:57 +05:30 committed by Mark Brown
parent 703a6e2288
commit a43ea44ddd
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
2 changed files with 23 additions and 6 deletions
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28
sound/soc/amd/raven/acp3x-i2s.c
View file

@ -42,7 +42,7 @@ static int acp3x_i2s_set_tdm_slot(struct snd_soc_dai *cpu_dai,
u32 tx_mask, u32 rx_mask, int slots, int slot_width)
{
struct i2s_dev_data *adata;
u32 val, reg_val, frmt_val, frm_len;
u32 val, reg_val, frmt_reg, frm_len;
u16 slot_len;
adata = snd_soc_dai_get_drvdata(cpu_dai);
@ -69,15 +69,31 @@ static int acp3x_i2s_set_tdm_slot(struct snd_soc_dai *cpu_dai,
frm_len = FRM_LEN | (slots << 15) | (slot_len << 18);
if (adata->substream_type == SNDRV_PCM_STREAM_PLAYBACK) {
reg_val = mmACP_BTTDM_ITER;
frmt_val = mmACP_BTTDM_TXFRMT;
switch (adata->i2s_instance) {
case I2S_BT_INSTANCE:
reg_val = mmACP_BTTDM_ITER;
frmt_reg = mmACP_BTTDM_TXFRMT;
break;
case I2S_SP_INSTANCE:
default:
reg_val = mmACP_I2STDM_ITER;
frmt_reg = mmACP_I2STDM_TXFRMT;
}
} else {
reg_val = mmACP_BTTDM_IRER;
frmt_val = mmACP_BTTDM_RXFRMT;
switch (adata->i2s_instance) {
case I2S_BT_INSTANCE:
reg_val = mmACP_BTTDM_IRER;
frmt_reg = mmACP_BTTDM_RXFRMT;
break;
case I2S_SP_INSTANCE:
default:
reg_val = mmACP_I2STDM_IRER;
frmt_reg = mmACP_I2STDM_RXFRMT;
}
}
val = rv_readl(adata->acp3x_base + reg_val);
rv_writel(val | 0x2, adata->acp3x_base + reg_val);
rv_writel(frm_len, adata->acp3x_base + frmt_val);
rv_writel(frm_len, adata->acp3x_base + frmt_reg);
adata->tdm_fmt = frm_len;
return 0;
}

1
sound/soc/amd/raven/acp3x.h
View file

@ -78,6 +78,7 @@ struct acp3x_platform_info {
struct i2s_dev_data {
bool tdm_mode;
unsigned int i2s_irq;
u16 i2s_instance;
u32 tdm_fmt;
u32 substream_type;
void __iomem *acp3x_base;