Add callback and code changes to enable ACP I2S controller in TDM mode. Add new fields in acp_stream and acp_dev_data struct to configure tdm related registers for ACP i2s controllers.

Signed-off-by: Venkata Prasad Potturu venkataprasad.potturu@amd.com ---

Depends on:- -- https://patchwork.kernel.org/project/alsa-devel/patch/20220804072556.601396-... -- https://patchwork.kernel.org/project/alsa-devel/patch/20220801063501.51439-1...

Changes since v1: -- Add spin lock where linked list is referring.

sound/soc/amd/acp/acp-i2s.c | 80 ++++++++++++++++++++++++++++++++++++- sound/soc/amd/acp/amd.h | 12 ++++++ 2 files changed, 91 insertions(+), 1 deletion(-)

diff --git a/sound/soc/amd/acp/acp-i2s.c b/sound/soc/amd/acp/acp-i2s.c index 393f729ef561..ac416572db0d 100644 --- a/sound/soc/amd/acp/acp-i2s.c +++ b/sound/soc/amd/acp/acp-i2s.c @@ -25,6 +25,65 @@

#define DRV_NAME "acp_i2s_playcap"

+static int acp_i2s_set_fmt(struct snd_soc_dai *cpu_dai, + unsigned int fmt) +{ + struct acp_dev_data *adata = snd_soc_dai_get_drvdata(cpu_dai); + int mode; + + mode = fmt & SND_SOC_DAIFMT_FORMAT_MASK; + switch (mode) { + case SND_SOC_DAIFMT_I2S: + adata->tdm_mode = TDM_DISABLE; + break; + case SND_SOC_DAIFMT_DSP_A: + adata->tdm_mode = TDM_ENABLE; + break; + default: + return -EINVAL; + } + return 0; +} + +static int acp_i2s_set_tdm_slot(struct snd_soc_dai *dai, u32 tx_mask, u32 rx_mask, + int slots, int slot_width) +{ + struct device *dev = dai->component->dev; + struct acp_dev_data *adata = snd_soc_dai_get_drvdata(dai); + struct acp_stream *stream; + int slot_len; + + 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: + dev_err(dev, "Unsupported bitdepth %d\n", slot_width); + return -EINVAL; + } + + spin_lock_irq(&adata->acp_lock); + list_for_each_entry(stream, &adata->stream_list, list) { + if (tx_mask && stream->dir == SNDRV_PCM_STREAM_PLAYBACK) + adata->tdm_tx_fmt[stream->dai_id - 1] = + FRM_LEN | (slots << 15) | (slot_len << 18); + else if (rx_mask && stream->dir == SNDRV_PCM_STREAM_CAPTURE) + adata->tdm_rx_fmt[stream->dai_id - 1] = + FRM_LEN | (slots << 15) | (slot_len << 18); + } + spin_unlock_irq(&adata->acp_lock); + return 0; +} + static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { @@ -33,7 +92,7 @@ static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_ struct acp_resource *rsrc; u32 val; u32 xfer_resolution; - u32 reg_val; + u32 reg_val, fmt_reg, tdm_fmt; u32 lrclk_div_val, bclk_div_val;

adata = snd_soc_dai_get_drvdata(dai); @@ -62,12 +121,15 @@ static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_ switch (dai->driver->id) { case I2S_BT_INSTANCE: reg_val = ACP_BTTDM_ITER; + fmt_reg = ACP_BTTDM_TXFRMT; break; case I2S_SP_INSTANCE: reg_val = ACP_I2STDM_ITER; + fmt_reg = ACP_I2STDM_TXFRMT; break; case I2S_HS_INSTANCE: reg_val = ACP_HSTDM_ITER; + fmt_reg = ACP_HSTDM_TXFRMT; break; default: dev_err(dev, "Invalid dai id %x\n", dai->driver->id); @@ -77,12 +139,15 @@ static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_ switch (dai->driver->id) { case I2S_BT_INSTANCE: reg_val = ACP_BTTDM_IRER; + fmt_reg = ACP_BTTDM_RXFRMT; break; case I2S_SP_INSTANCE: reg_val = ACP_I2STDM_IRER; + fmt_reg = ACP_I2STDM_RXFRMT; break; case I2S_HS_INSTANCE: reg_val = ACP_HSTDM_IRER; + fmt_reg = ACP_HSTDM_RXFRMT; break; default: dev_err(dev, "Invalid dai id %x\n", dai->driver->id); @@ -95,6 +160,16 @@ static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_ val = val | (xfer_resolution << 3); writel(val, adata->acp_base + reg_val);

+ if (adata->tdm_mode) { + val = readl(adata->acp_base + reg_val); + writel(val | BIT(1), adata->acp_base + reg_val); + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + tdm_fmt = adata->tdm_tx_fmt[dai->driver->id - 1]; + else + tdm_fmt = adata->tdm_rx_fmt[dai->driver->id - 1]; + writel(tdm_fmt, adata->acp_base + fmt_reg); + } + if (rsrc->soc_mclk) { switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: @@ -443,6 +518,7 @@ static int acp_i2s_startup(struct snd_pcm_substream *substream, struct snd_soc_d stream->id = dai->driver->id + dir; stream->dai_id = dai->driver->id; stream->irq_bit = irq_bit; + stream->dir = substream->stream;

return 0; } @@ -452,6 +528,8 @@ const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops = { .hw_params = acp_i2s_hwparams, .prepare = acp_i2s_prepare, .trigger = acp_i2s_trigger, + .set_fmt = acp_i2s_set_fmt, + .set_tdm_slot = acp_i2s_set_tdm_slot, }; EXPORT_SYMBOL_NS_GPL(asoc_acp_cpu_dai_ops, SND_SOC_ACP_COMMON);

diff --git a/sound/soc/amd/acp/amd.h b/sound/soc/amd/acp/amd.h index be8bb8247c4e..5f2119f42271 100644 --- a/sound/soc/amd/acp/amd.h +++ b/sound/soc/amd/acp/amd.h @@ -84,6 +84,14 @@

#define ACP_MAX_STREAM 8

+#define TDM_ENABLE 1 +#define TDM_DISABLE 0 + +#define SLOT_WIDTH_8 0x8 +#define SLOT_WIDTH_16 0x10 +#define SLOT_WIDTH_24 0x18 +#define SLOT_WIDTH_32 0x20 + struct acp_chip_info { char *name; /* Platform name */ unsigned int acp_rev; /* ACP Revision id */ @@ -96,6 +104,7 @@ struct acp_stream { int irq_bit; int dai_id; int id; + int dir; u64 bytescount; u32 reg_offset; u32 pte_offset; @@ -120,6 +129,7 @@ struct acp_dev_data { void __iomem *acp_base; unsigned int i2s_irq;

+ bool tdm_mode; /* SOC specific dais */ struct snd_soc_dai_driver *dai_driver; int num_dai; @@ -134,6 +144,8 @@ struct acp_dev_data { u32 lrclk_div;

struct acp_resource *rsrc; + u32 tdm_tx_fmt[3]; + u32 tdm_rx_fmt[3]; };

union acp_i2stdm_mstrclkgen {