@@ -17,6 +17,344 @@
#define DRV_NAME "acp5x_i2s_playcap"
+static int acp5x_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
+ unsigned int fmt)
+{
+ struct i2s_dev_data *adata;
+ int mode;
+
+ adata = snd_soc_dai_get_drvdata(cpu_dai);
+ 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;
+ }
+ mode = fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
+ switch (mode) {
+ case SND_SOC_DAIFMT_CBC_CFC:
+ adata->master_mode = I2S_MASTER_MODE_ENABLE;
+ break;
+ case SND_SOC_DAIFMT_CBP_CFP:
+ adata->master_mode = I2S_MASTER_MODE_DISABLE;
+ break;
+ }
+ return 0;
+}
+
+static int acp5x_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 frm_len;
+ u16 slot_len;
+
+ adata = snd_soc_dai_get_drvdata(cpu_dai);
+
+ /* These values are as per Hardware Spec */
+ 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;
+ }
+ frm_len = FRM_LEN | (slots << 15) | (slot_len << 18);
+ adata->tdm_fmt = frm_len;
+ return 0;
+}
+
+static int acp5x_i2s_hwparams(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct i2s_stream_instance *rtd;
+ struct snd_soc_pcm_runtime *prtd;
+ struct snd_soc_card *card;
+ struct acp5x_platform_info *pinfo;
+ struct i2s_dev_data *adata;
+ union acp_i2stdm_mstrclkgen mclkgen;
+
+ u32 val;
+ u32 reg_val, frmt_reg, master_reg;
+ u32 lrclk_div_val, bclk_div_val;
+
+ lrclk_div_val = 0;
+ bclk_div_val = 0;
+ prtd = asoc_substream_to_rtd(substream);
+ rtd = substream->runtime->private_data;
+ card = prtd->card;
+ adata = snd_soc_dai_get_drvdata(dai);
+ pinfo = snd_soc_card_get_drvdata(card);
+ if (pinfo) {
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ rtd->i2s_instance = pinfo->play_i2s_instance;
+ else
+ rtd->i2s_instance = pinfo->cap_i2s_instance;
+ }
+
+ /* These values are as per Hardware Spec */
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_U8:
+ case SNDRV_PCM_FORMAT_S8:
+ rtd->xfer_resolution = 0x0;
+ break;
+ case SNDRV_PCM_FORMAT_S16_LE:
+ rtd->xfer_resolution = 0x02;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ rtd->xfer_resolution = 0x04;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ rtd->xfer_resolution = 0x05;
+ break;
+ default:
+ return -EINVAL;
+ }
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ switch (rtd->i2s_instance) {
+ case I2S_HS_INSTANCE:
+ reg_val = ACP_HSTDM_ITER;
+ frmt_reg = ACP_HSTDM_TXFRMT;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ reg_val = ACP_I2STDM_ITER;
+ frmt_reg = ACP_I2STDM_TXFRMT;
+ }
+ } else {
+ switch (rtd->i2s_instance) {
+ case I2S_HS_INSTANCE:
+ reg_val = ACP_HSTDM_IRER;
+ frmt_reg = ACP_HSTDM_RXFRMT;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ reg_val = ACP_I2STDM_IRER;
+ frmt_reg = ACP_I2STDM_RXFRMT;
+ }
+ }
+ if (adata->tdm_mode) {
+ val = acp_readl(rtd->acp5x_base + reg_val);
+ acp_writel(val | 0x2, rtd->acp5x_base + reg_val);
+ acp_writel(adata->tdm_fmt, rtd->acp5x_base + frmt_reg);
+ }
+ val = acp_readl(rtd->acp5x_base + reg_val);
+ val &= ~ACP5x_ITER_IRER_SAMP_LEN_MASK;
+ val = val | (rtd->xfer_resolution << 3);
+ acp_writel(val, rtd->acp5x_base + reg_val);
+
+ if (adata->master_mode) {
+ switch (rtd->i2s_instance) {
+ case I2S_HS_INSTANCE:
+ master_reg = ACP_I2STDM2_MSTRCLKGEN;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ master_reg = ACP_I2STDM0_MSTRCLKGEN;
+ break;
+ }
+ mclkgen.bits.i2stdm_master_mode = 0x1;
+ if (adata->tdm_mode)
+ mclkgen.bits.i2stdm_format_mode = 0x01;
+ else
+ mclkgen.bits.i2stdm_format_mode = 0x0;
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ switch (params_rate(params)) {
+ case 8000:
+ bclk_div_val = 768;
+ break;
+ case 16000:
+ bclk_div_val = 384;
+ break;
+ case 24000:
+ bclk_div_val = 256;
+ break;
+ case 32000:
+ bclk_div_val = 192;
+ break;
+ case 44100:
+ case 48000:
+ bclk_div_val = 128;
+ break;
+ case 88200:
+ case 96000:
+ bclk_div_val = 64;
+ break;
+ case 192000:
+ bclk_div_val = 32;
+ break;
+ default:
+ return -EINVAL;
+ }
+ lrclk_div_val = 32;
+ break;
+ case SNDRV_PCM_FORMAT_S32_LE:
+ switch (params_rate(params)) {
+ case 8000:
+ bclk_div_val = 384;
+ break;
+ case 16000:
+ bclk_div_val = 192;
+ break;
+ case 24000:
+ bclk_div_val = 128;
+ break;
+ case 32000:
+ bclk_div_val = 96;
+ break;
+ case 44100:
+ case 48000:
+ bclk_div_val = 64;
+ break;
+ case 88200:
+ case 96000:
+ bclk_div_val = 32;
+ break;
+ case 192000:
+ bclk_div_val = 16;
+ break;
+ default:
+ return -EINVAL;
+ }
+ lrclk_div_val = 64;
+ break;
+ default:
+ return -EINVAL;
+ }
+ mclkgen.bits.i2stdm_bclk_div_val = bclk_div_val;
+ mclkgen.bits.i2stdm_lrclk_div_val = lrclk_div_val;
+ acp_writel(mclkgen.u32_all, rtd->acp5x_base + master_reg);
+ }
+ return 0;
+}
+
+static int acp5x_i2s_trigger(struct snd_pcm_substream *substream,
+ int cmd, struct snd_soc_dai *dai)
+{
+ struct i2s_stream_instance *rtd;
+ u32 ret, val, period_bytes, reg_val, ier_val, water_val;
+ u32 buf_size, buf_reg;
+
+ rtd = substream->runtime->private_data;
+ period_bytes = frames_to_bytes(substream->runtime,
+ substream->runtime->period_size);
+ buf_size = frames_to_bytes(substream->runtime,
+ substream->runtime->buffer_size);
+ switch (cmd) {
+ case SNDRV_PCM_TRIGGER_START:
+ case SNDRV_PCM_TRIGGER_RESUME:
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+ rtd->bytescount = acp_get_byte_count(rtd,
+ substream->stream);
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ switch (rtd->i2s_instance) {
+ case I2S_HS_INSTANCE:
+ water_val =
+ ACP_HS_TX_INTR_WATERMARK_SIZE;
+ reg_val = ACP_HSTDM_ITER;
+ ier_val = ACP_HSTDM_IER;
+ buf_reg = ACP_HS_TX_RINGBUFSIZE;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ water_val =
+ ACP_I2S_TX_INTR_WATERMARK_SIZE;
+ reg_val = ACP_I2STDM_ITER;
+ ier_val = ACP_I2STDM_IER;
+ buf_reg = ACP_I2S_TX_RINGBUFSIZE;
+ }
+ } else {
+ switch (rtd->i2s_instance) {
+ case I2S_HS_INSTANCE:
+ water_val =
+ ACP_HS_RX_INTR_WATERMARK_SIZE;
+ reg_val = ACP_HSTDM_IRER;
+ ier_val = ACP_HSTDM_IER;
+ buf_reg = ACP_HS_RX_RINGBUFSIZE;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ water_val =
+ ACP_I2S_RX_INTR_WATERMARK_SIZE;
+ reg_val = ACP_I2STDM_IRER;
+ ier_val = ACP_I2STDM_IER;
+ buf_reg = ACP_I2S_RX_RINGBUFSIZE;
+ }
+ }
+ acp_writel(period_bytes, rtd->acp5x_base + water_val);
+ acp_writel(buf_size, rtd->acp5x_base + buf_reg);
+ val = acp_readl(rtd->acp5x_base + reg_val);
+ val = val | BIT(0);
+ acp_writel(val, rtd->acp5x_base + reg_val);
+ acp_writel(1, rtd->acp5x_base + ier_val);
+ ret = 0;
+ break;
+ case SNDRV_PCM_TRIGGER_STOP:
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ switch (rtd->i2s_instance) {
+ case I2S_HS_INSTANCE:
+ reg_val = ACP_HSTDM_ITER;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ reg_val = ACP_I2STDM_ITER;
+ }
+
+ } else {
+ switch (rtd->i2s_instance) {
+ case I2S_HS_INSTANCE:
+ reg_val = ACP_HSTDM_IRER;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ reg_val = ACP_I2STDM_IRER;
+ }
+ }
+ val = acp_readl(rtd->acp5x_base + reg_val);
+ val = val & ~BIT(0);
+ acp_writel(val, rtd->acp5x_base + reg_val);
+
+ if (!(acp_readl(rtd->acp5x_base + ACP_HSTDM_ITER) & BIT(0)) &&
+ !(acp_readl(rtd->acp5x_base + ACP_HSTDM_IRER) & BIT(0)))
+ acp_writel(0, rtd->acp5x_base + ACP_HSTDM_IER);
+ if (!(acp_readl(rtd->acp5x_base + ACP_I2STDM_ITER) & BIT(0)) &&
+ !(acp_readl(rtd->acp5x_base + ACP_I2STDM_IRER) & BIT(0)))
+ acp_writel(0, rtd->acp5x_base + ACP_I2STDM_IER);
+ ret = 0;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static struct snd_soc_dai_ops acp5x_i2s_dai_ops = {
+ .hw_params = acp5x_i2s_hwparams,
+ .trigger = acp5x_i2s_trigger,
+ .set_fmt = acp5x_i2s_set_fmt,
+ .set_tdm_slot = acp5x_i2s_set_tdm_slot,
+};
+
static const struct snd_soc_component_driver acp5x_dai_component = {
.name = "acp5x-i2s",
};
@@ -40,6 +378,7 @@ static struct snd_soc_dai_driver acp5x_i2s_dai = {
.rate_min = 8000,
.rate_max = 96000,
},
+ .ops = &acp5x_i2s_dai_ops,
};
static int acp5x_dai_probe(struct platform_device *pdev)
@@ -73,9 +73,20 @@
#define I2S_MASTER_MODE_ENABLE 0x01
#define I2S_MASTER_MODE_DISABLE 0x00
+#define SLOT_WIDTH_8 0x08
+#define SLOT_WIDTH_16 0x10
+#define SLOT_WIDTH_24 0x18
+#define SLOT_WIDTH_32 0x20
+#define TDM_ENABLE 1
+#define TDM_DISABLE 0
+#define ACP5x_ITER_IRER_SAMP_LEN_MASK 0x38
+
struct i2s_dev_data {
+ bool tdm_mode;
bool master_mode;
unsigned int i2s_irq;
+ u16 i2s_instance;
+ u32 tdm_fmt;
void __iomem *acp5x_base;
struct snd_pcm_substream *play_stream;
struct snd_pcm_substream *capture_stream;
@@ -108,6 +119,17 @@ struct acp5x_platform_info {
u16 cap_i2s_instance;
};
+union acp_i2stdm_mstrclkgen {
+ struct {
+ u32 i2stdm_master_mode : 1;
+ u32 i2stdm_format_mode : 1;
+ u32 i2stdm_lrclk_div_val : 9;
+ u32 i2stdm_bclk_div_val : 11;
+ u32:10;
+ } bitfields, bits;
+ u32 u32_all;
+};
+
/* common header file uses exact offset rather than relative
* offset which requires substraction logic from base_addr
* for accessing ACP5x MMIO space registers