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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: Maruthi Bayyavarapu <maruthi.bayyavarapu@amd.com>
Tested-by: Ravulapati Vishnu vardhan Rao <Vishnuvardhanrao.Ravulapati@amd.com>
Signed-off-by: Vijendar Mukunda <vijendar.mukunda@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vijendar Mukunda 2018-11-12 11:04:59 +05:30 committed by Mark Brown
parent 2b5f290e10
commit 67aa06aef5
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 69 additions and 0 deletions
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62
sound/soc/amd/raven/acp3x-pcm-dma.c
View File

@ -27,7 +27,9 @@
#define DRV_NAME "acp3x-i2s-audio"
struct i2s_dev_data {
bool tdm_mode;
unsigned int i2s_irq;
u32 tdm_fmt;
void __iomem *acp3x_base;
struct snd_pcm_substream *play_stream;
struct snd_pcm_substream *capture_stream;
@ -423,6 +425,64 @@ static struct snd_pcm_ops acp3x_dma_ops = {
.mmap = acp3x_dma_mmap,
};
static int acp3x_dai_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
{
struct i2s_dev_data *adata = snd_soc_dai_get_drvdata(cpu_dai);
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
adata->tdm_mode = false;
break;
case SND_SOC_DAIFMT_DSP_A:
adata->tdm_mode = true;
break;
default:
return -EINVAL;
}
return 0;
}
static int acp3x_dai_set_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask,
u32 rx_mask, int slots, int slot_width)
{
u32 val = 0;
u16 slot_len;
struct i2s_dev_data *adata = snd_soc_dai_get_drvdata(cpu_dai);
switch (slot_width) {
case SLOT_WIDTH_8:
slot_len = 8;
break;
case SLOT_WIDTH_16:
slot_len = 16;
break;
case SLOT_WIDTH_24:
slot_len = 24;
break;
case SLOT_WIDTH_32:
slot_len = 0;
break;
default:
return -EINVAL;
}
val = rv_readl(adata->acp3x_base + mmACP_BTTDM_ITER);
rv_writel((val | 0x2), adata->acp3x_base + mmACP_BTTDM_ITER);
val = rv_readl(adata->acp3x_base + mmACP_BTTDM_IRER);
rv_writel((val | 0x2), adata->acp3x_base + mmACP_BTTDM_IRER);
val = (FRM_LEN | (slots << 15) | (slot_len << 18));
rv_writel(val, adata->acp3x_base + mmACP_BTTDM_TXFRMT);
rv_writel(val, adata->acp3x_base + mmACP_BTTDM_RXFRMT);
adata->tdm_fmt = val;
return 0;
}
static int acp3x_dai_i2s_hwparams(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
@ -510,6 +570,8 @@ static int acp3x_dai_i2s_trigger(struct snd_pcm_substream *substream,
struct snd_soc_dai_ops acp3x_dai_i2s_ops = {
.hw_params = acp3x_dai_i2s_hwparams,
.trigger = acp3x_dai_i2s_trigger,
.set_fmt = acp3x_dai_i2s_set_fmt,
.set_tdm_slot = acp3x_dai_set_tdm_slot,
};
static struct snd_soc_dai_driver acp3x_i2s_dai_driver = {

7
sound/soc/amd/raven/acp3x.h
View File

@ -32,6 +32,13 @@
#define MIN_BUFFER MAX_BUFFER
#define FIFO_SIZE 0x100
#define DMA_SIZE 0x40
#define FRM_LEN 0x100
#define SLOT_WIDTH_8 0x08
#define SLOT_WIDTH_16 0x10
#define SLOT_WIDTH_24 0x18
#define SLOT_WIDTH_32 0x20
static inline u32 rv_readl(void __iomem *base_addr)
{