Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 416 insertions, 0 deletions

diff --git a/sound/soc/amd/vangogh/acp5x-i2s.c b/sound/soc/amd/vangogh/acp5x-i2s.c
new file mode 100644
index 0000000000..773e96f1b4
--- /dev/null
+++ b/sound/soc/amd/vangogh/acp5x-i2s.c
@@ -0,0 +1,416 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// AMD ALSA SoC PCM Driver
+//
+// Copyright (C) 2021 Advanced Micro Devices, Inc. All rights reserved.
+
+#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 "acp5x.h"
+
+#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_BP_FP:
+		adata->master_mode = I2S_MASTER_MODE_ENABLE;
+		break;
+	case SND_SOC_DAIFMT_BC_FC:
+		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;
+
+	u32 val;
+	u32 reg_val, frmt_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 (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;
+		}
+		rtd->lrclk_div = lrclk_div_val;
+		rtd->bclk_div = bclk_div_val;
+	}
+	return 0;
+}
+
+static int acp5x_i2s_trigger(struct snd_pcm_substream *substream,
+			     int cmd, struct snd_soc_dai *dai)
+{
+	struct i2s_stream_instance *rtd;
+	struct i2s_dev_data *adata;
+	u32 ret, val, period_bytes, reg_val, ier_val, water_val;
+	u32 buf_size, buf_reg;
+
+	adata = snd_soc_dai_get_drvdata(dai);
+	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);
+		if (adata->master_mode)
+			acp5x_set_i2s_clk(adata, rtd);
+		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 const 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",
+	.legacy_dai_naming = 1,
+};
+
+static struct snd_soc_dai_driver acp5x_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_S32_LE,
+		.channels_min = 2,
+		.channels_max = 2,
+		.rate_min = 8000,
+		.rate_max = 96000,
+	},
+	.capture = {
+		.rates = SNDRV_PCM_RATE_8000_96000,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
+			SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
+		.channels_min = 2,
+		.channels_max = 2,
+		.rate_min = 8000,
+		.rate_max = 96000,
+	},
+	.ops = &acp5x_i2s_dai_ops,
+};
+
+static int acp5x_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->acp5x_base = devm_ioremap(&pdev->dev, res->start,
+					 resource_size(res));
+	if (!adata->acp5x_base)
+		return -ENOMEM;
+
+	adata->master_mode = I2S_MASTER_MODE_ENABLE;
+	dev_set_drvdata(&pdev->dev, adata);
+	ret = devm_snd_soc_register_component(&pdev->dev,
+					      &acp5x_dai_component,
+					      &acp5x_i2s_dai, 1);
+	if (ret)
+		dev_err(&pdev->dev, "Fail to register acp i2s dai\n");
+	return ret;
+}
+
+static struct platform_driver acp5x_dai_driver = {
+	.probe = acp5x_dai_probe,
+	.driver = {
+		.name = "acp5x_i2s_playcap",
+	},
+};
+
+module_platform_driver(acp5x_dai_driver);
+
+MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
+MODULE_DESCRIPTION("AMD ACP5.x CPU DAI Driver");
+MODULE_ALIAS("platform:" DRV_NAME);
+MODULE_LICENSE("GPL v2");