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Diffstat (limited to 'sound/soc/amd/raven/acp3x-i2s.c')
-rw-r--r--sound/soc/amd/raven/acp3x-i2s.c339
1 files changed, 339 insertions, 0 deletions
diff --git a/sound/soc/amd/raven/acp3x-i2s.c b/sound/soc/amd/raven/acp3x-i2s.c
new file mode 100644
index 000000000..5bc028692
--- /dev/null
+++ b/sound/soc/amd/raven/acp3x-i2s.c
@@ -0,0 +1,339 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// AMD ALSA SoC PCM Driver
+//
+//Copyright 2016 Advanced Micro Devices, Inc.
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <linux/dma-mapping.h>
+
+#include "acp3x.h"
+
+#define DRV_NAME "acp3x_i2s_playcap"
+
+static int acp3x_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;
+ }
+ return 0;
+}
+
+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 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 acp3x_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 acp3x_platform_info *pinfo;
+ struct i2s_dev_data *adata;
+ u32 val;
+ u32 reg_val, frmt_reg;
+
+ 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_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 {
+ switch (rtd->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;
+ }
+ }
+ if (adata->tdm_mode) {
+ val = rv_readl(rtd->acp3x_base + reg_val);
+ rv_writel(val | 0x2, rtd->acp3x_base + reg_val);
+ rv_writel(adata->tdm_fmt, rtd->acp3x_base + frmt_reg);
+ }
+ val = rv_readl(rtd->acp3x_base + reg_val);
+ val &= ~ACP3x_ITER_IRER_SAMP_LEN_MASK;
+ val = val | (rtd->xfer_resolution << 3);
+ rv_writel(val, rtd->acp3x_base + reg_val);
+ return 0;
+}
+
+static int acp3x_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_BT_INSTANCE:
+ water_val =
+ mmACP_BT_TX_INTR_WATERMARK_SIZE;
+ reg_val = mmACP_BTTDM_ITER;
+ ier_val = mmACP_BTTDM_IER;
+ buf_reg = mmACP_BT_TX_RINGBUFSIZE;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ water_val =
+ mmACP_I2S_TX_INTR_WATERMARK_SIZE;
+ reg_val = mmACP_I2STDM_ITER;
+ ier_val = mmACP_I2STDM_IER;
+ buf_reg = mmACP_I2S_TX_RINGBUFSIZE;
+ }
+ } else {
+ switch (rtd->i2s_instance) {
+ case I2S_BT_INSTANCE:
+ water_val =
+ mmACP_BT_RX_INTR_WATERMARK_SIZE;
+ reg_val = mmACP_BTTDM_IRER;
+ ier_val = mmACP_BTTDM_IER;
+ buf_reg = mmACP_BT_RX_RINGBUFSIZE;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ water_val =
+ mmACP_I2S_RX_INTR_WATERMARK_SIZE;
+ reg_val = mmACP_I2STDM_IRER;
+ ier_val = mmACP_I2STDM_IER;
+ buf_reg = mmACP_I2S_RX_RINGBUFSIZE;
+ }
+ }
+ rv_writel(period_bytes, rtd->acp3x_base + water_val);
+ rv_writel(buf_size, rtd->acp3x_base + buf_reg);
+ val = rv_readl(rtd->acp3x_base + reg_val);
+ val = val | BIT(0);
+ rv_writel(val, rtd->acp3x_base + reg_val);
+ rv_writel(1, rtd->acp3x_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_BT_INSTANCE:
+ reg_val = mmACP_BTTDM_ITER;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ reg_val = mmACP_I2STDM_ITER;
+ }
+
+ } else {
+ switch (rtd->i2s_instance) {
+ case I2S_BT_INSTANCE:
+ reg_val = mmACP_BTTDM_IRER;
+ break;
+ case I2S_SP_INSTANCE:
+ default:
+ reg_val = mmACP_I2STDM_IRER;
+ }
+ }
+ val = rv_readl(rtd->acp3x_base + reg_val);
+ val = val & ~BIT(0);
+ rv_writel(val, rtd->acp3x_base + reg_val);
+
+ if (!(rv_readl(rtd->acp3x_base + mmACP_BTTDM_ITER) & BIT(0)) &&
+ !(rv_readl(rtd->acp3x_base + mmACP_BTTDM_IRER) & BIT(0)))
+ rv_writel(0, rtd->acp3x_base + mmACP_BTTDM_IER);
+ if (!(rv_readl(rtd->acp3x_base + mmACP_I2STDM_ITER) & BIT(0)) &&
+ !(rv_readl(rtd->acp3x_base + mmACP_I2STDM_IRER) & BIT(0)))
+ rv_writel(0, rtd->acp3x_base + mmACP_I2STDM_IER);
+ ret = 0;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static struct snd_soc_dai_ops acp3x_i2s_dai_ops = {
+ .hw_params = acp3x_i2s_hwparams,
+ .trigger = acp3x_i2s_trigger,
+ .set_fmt = acp3x_i2s_set_fmt,
+ .set_tdm_slot = acp3x_i2s_set_tdm_slot,
+};
+
+static const struct snd_soc_component_driver acp3x_dai_component = {
+ .name = DRV_NAME,
+};
+
+static struct snd_soc_dai_driver acp3x_i2s_dai = {
+ .playback = {
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 8,
+ .rate_min = 8000,
+ .rate_max = 96000,
+ },
+ .capture = {
+ .rates = SNDRV_PCM_RATE_8000_48000,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+ SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 2,
+ .rate_min = 8000,
+ .rate_max = 48000,
+ },
+ .ops = &acp3x_i2s_dai_ops,
+};
+
+static int acp3x_dai_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct i2s_dev_data *adata;
+ int ret;
+
+ adata = devm_kzalloc(&pdev->dev, sizeof(struct i2s_dev_data),
+ GFP_KERNEL);
+ if (!adata)
+ return -ENOMEM;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
+ return -ENOMEM;
+ }
+ adata->acp3x_base = devm_ioremap(&pdev->dev, res->start,
+ resource_size(res));
+ if (!adata->acp3x_base)
+ return -ENOMEM;
+
+ adata->i2s_irq = res->start;
+ dev_set_drvdata(&pdev->dev, adata);
+ ret = devm_snd_soc_register_component(&pdev->dev,
+ &acp3x_dai_component, &acp3x_i2s_dai, 1);
+ if (ret) {
+ dev_err(&pdev->dev, "Fail to register acp i2s dai\n");
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static int acp3x_dai_remove(struct platform_device *pdev)
+{
+ /* As we use devm_ memory alloc there is nothing TBD here */
+
+ return 0;
+}
+
+static struct platform_driver acp3x_dai_driver = {
+ .probe = acp3x_dai_probe,
+ .remove = acp3x_dai_remove,
+ .driver = {
+ .name = "acp3x_i2s_playcap",
+ },
+};
+
+module_platform_driver(acp3x_dai_driver);
+
+MODULE_AUTHOR("Vishnuvardhanrao.Ravulapati@amd.com");
+MODULE_DESCRIPTION("AMD ACP 3.x PCM Driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:"DRV_NAME);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-26 01:46:53 +0000