Adding upstream version 6.1.76.upstream/6.1.76

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

1 files changed, 559 insertions, 0 deletions

diff --git a/sound/soc/amd/acp/acp-i2s.c b/sound/soc/amd/acp/acp-i2s.c
new file mode 100644
index 000000000..ac416572d
--- /dev/null
+++ b/sound/soc/amd/acp/acp-i2s.c
@@ -0,0 +1,559 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license. When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2021 Advanced Micro Devices, Inc.
+//
+// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
+//
+
+/*
+ * Generic Hardware interface for ACP Audio I2S controller
+ */
+
+#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 "amd.h"
+
+#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)
+{
+	struct device *dev = dai->component->dev;
+	struct acp_dev_data *adata;
+	struct acp_resource *rsrc;
+	u32 val;
+	u32 xfer_resolution;
+	u32 reg_val, fmt_reg, tdm_fmt;
+	u32 lrclk_div_val, bclk_div_val;
+
+	adata = snd_soc_dai_get_drvdata(dai);
+	rsrc = adata->rsrc;
+
+	/* These values are as per Hardware Spec */
+	switch (params_format(params)) {
+	case SNDRV_PCM_FORMAT_U8:
+	case SNDRV_PCM_FORMAT_S8:
+		xfer_resolution = 0x0;
+		break;
+	case SNDRV_PCM_FORMAT_S16_LE:
+		xfer_resolution = 0x02;
+		break;
+	case SNDRV_PCM_FORMAT_S24_LE:
+		xfer_resolution = 0x04;
+		break;
+	case SNDRV_PCM_FORMAT_S32_LE:
+		xfer_resolution = 0x05;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		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);
+			return -EINVAL;
+		}
+	} else {
+		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);
+			return -EINVAL;
+		}
+	}
+
+	val = readl(adata->acp_base + reg_val);
+	val &= ~ACP3x_ITER_IRER_SAMP_LEN_MASK;
+	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:
+			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;
+		}
+		adata->lrclk_div = lrclk_div_val;
+		adata->bclk_div = bclk_div_val;
+	}
+	return 0;
+}
+
+static int acp_i2s_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai)
+{
+	struct acp_stream *stream = substream->runtime->private_data;
+	struct device *dev = dai->component->dev;
+	struct acp_dev_data *adata = dev_get_drvdata(dev);
+	struct acp_resource *rsrc = adata->rsrc;
+	u32 val, period_bytes, reg_val, ier_val, water_val, buf_size, buf_reg;
+
+	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:
+		stream->bytescount = acp_get_byte_count(adata, stream->dai_id, substream->stream);
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+			switch (dai->driver->id) {
+			case I2S_BT_INSTANCE:
+				water_val = ACP_BT_TX_INTR_WATERMARK_SIZE;
+				reg_val = ACP_BTTDM_ITER;
+				ier_val = ACP_BTTDM_IER;
+				buf_reg = ACP_BT_TX_RINGBUFSIZE;
+				break;
+			case I2S_SP_INSTANCE:
+				water_val = ACP_I2S_TX_INTR_WATERMARK_SIZE;
+				reg_val = ACP_I2STDM_ITER;
+				ier_val = ACP_I2STDM_IER;
+				buf_reg = ACP_I2S_TX_RINGBUFSIZE;
+				break;
+			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;
+			default:
+				dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
+				return -EINVAL;
+			}
+		} else {
+			switch (dai->driver->id) {
+			case I2S_BT_INSTANCE:
+				water_val = ACP_BT_RX_INTR_WATERMARK_SIZE;
+				reg_val = ACP_BTTDM_IRER;
+				ier_val = ACP_BTTDM_IER;
+				buf_reg = ACP_BT_RX_RINGBUFSIZE;
+				break;
+			case I2S_SP_INSTANCE:
+				water_val = ACP_I2S_RX_INTR_WATERMARK_SIZE;
+				reg_val = ACP_I2STDM_IRER;
+				ier_val = ACP_I2STDM_IER;
+				buf_reg = ACP_I2S_RX_RINGBUFSIZE;
+				break;
+			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;
+			default:
+				dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
+				return -EINVAL;
+			}
+		}
+		writel(period_bytes, adata->acp_base + water_val);
+		writel(buf_size, adata->acp_base + buf_reg);
+		val = readl(adata->acp_base + reg_val);
+		val = val | BIT(0);
+		writel(val, adata->acp_base + reg_val);
+		writel(1, adata->acp_base + ier_val);
+		if (rsrc->soc_mclk)
+			acp_set_i2s_clk(adata, dai->driver->id);
+		return 0;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+			switch (dai->driver->id) {
+			case I2S_BT_INSTANCE:
+				reg_val = ACP_BTTDM_ITER;
+				break;
+			case I2S_SP_INSTANCE:
+				reg_val = ACP_I2STDM_ITER;
+				break;
+			case I2S_HS_INSTANCE:
+				reg_val = ACP_HSTDM_ITER;
+				break;
+			default:
+				dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
+				return -EINVAL;
+			}
+
+		} else {
+			switch (dai->driver->id) {
+			case I2S_BT_INSTANCE:
+				reg_val = ACP_BTTDM_IRER;
+				break;
+			case I2S_SP_INSTANCE:
+				reg_val = ACP_I2STDM_IRER;
+				break;
+			case I2S_HS_INSTANCE:
+				reg_val = ACP_HSTDM_IRER;
+				break;
+			default:
+				dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
+				return -EINVAL;
+			}
+		}
+		val = readl(adata->acp_base + reg_val);
+		val = val & ~BIT(0);
+		writel(val, adata->acp_base + reg_val);
+
+		if (!(readl(adata->acp_base + ACP_BTTDM_ITER) & BIT(0)) &&
+		    !(readl(adata->acp_base + ACP_BTTDM_IRER) & BIT(0)))
+			writel(0, adata->acp_base + ACP_BTTDM_IER);
+		if (!(readl(adata->acp_base + ACP_I2STDM_ITER) & BIT(0)) &&
+		    !(readl(adata->acp_base + ACP_I2STDM_IRER) & BIT(0)))
+			writel(0, adata->acp_base + ACP_I2STDM_IER);
+		if (!(readl(adata->acp_base + ACP_HSTDM_ITER) & BIT(0)) &&
+		    !(readl(adata->acp_base + ACP_HSTDM_IRER) & BIT(0)))
+			writel(0, adata->acp_base + ACP_HSTDM_IER);
+		return 0;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int acp_i2s_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+{
+	struct device *dev = dai->component->dev;
+	struct acp_dev_data *adata = dev_get_drvdata(dev);
+	struct acp_resource *rsrc = adata->rsrc;
+	struct acp_stream *stream = substream->runtime->private_data;
+	u32 reg_dma_size = 0, reg_fifo_size = 0, reg_fifo_addr = 0;
+	u32 phy_addr = 0, acp_fifo_addr = 0, ext_int_ctrl;
+	unsigned int dir = substream->stream;
+
+	switch (dai->driver->id) {
+	case I2S_SP_INSTANCE:
+		if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
+			reg_dma_size = ACP_I2S_TX_DMA_SIZE;
+			acp_fifo_addr = rsrc->sram_pte_offset +
+						SP_PB_FIFO_ADDR_OFFSET;
+			reg_fifo_addr =	ACP_I2S_TX_FIFOADDR;
+			reg_fifo_size = ACP_I2S_TX_FIFOSIZE;
+
+			phy_addr = I2S_SP_TX_MEM_WINDOW_START + stream->reg_offset;
+			writel(phy_addr, adata->acp_base + ACP_I2S_TX_RINGBUFADDR);
+		} else {
+			reg_dma_size = ACP_I2S_RX_DMA_SIZE;
+			acp_fifo_addr = rsrc->sram_pte_offset +
+						SP_CAPT_FIFO_ADDR_OFFSET;
+			reg_fifo_addr = ACP_I2S_RX_FIFOADDR;
+			reg_fifo_size = ACP_I2S_RX_FIFOSIZE;
+			phy_addr = I2S_SP_RX_MEM_WINDOW_START + stream->reg_offset;
+			writel(phy_addr, adata->acp_base + ACP_I2S_RX_RINGBUFADDR);
+		}
+		break;
+	case I2S_BT_INSTANCE:
+		if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
+			reg_dma_size = ACP_BT_TX_DMA_SIZE;
+			acp_fifo_addr = rsrc->sram_pte_offset +
+						BT_PB_FIFO_ADDR_OFFSET;
+			reg_fifo_addr = ACP_BT_TX_FIFOADDR;
+			reg_fifo_size = ACP_BT_TX_FIFOSIZE;
+
+			phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
+			writel(phy_addr, adata->acp_base + ACP_BT_TX_RINGBUFADDR);
+		} else {
+			reg_dma_size = ACP_BT_RX_DMA_SIZE;
+			acp_fifo_addr = rsrc->sram_pte_offset +
+						BT_CAPT_FIFO_ADDR_OFFSET;
+			reg_fifo_addr = ACP_BT_RX_FIFOADDR;
+			reg_fifo_size = ACP_BT_RX_FIFOSIZE;
+
+			phy_addr = I2S_BT_TX_MEM_WINDOW_START + stream->reg_offset;
+			writel(phy_addr, adata->acp_base + ACP_BT_RX_RINGBUFADDR);
+		}
+		break;
+	case I2S_HS_INSTANCE:
+		if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
+			reg_dma_size = ACP_HS_TX_DMA_SIZE;
+			acp_fifo_addr = rsrc->sram_pte_offset +
+				HS_PB_FIFO_ADDR_OFFSET;
+			reg_fifo_addr = ACP_HS_TX_FIFOADDR;
+			reg_fifo_size = ACP_HS_TX_FIFOSIZE;
+
+			phy_addr = I2S_HS_TX_MEM_WINDOW_START + stream->reg_offset;
+			writel(phy_addr, adata->acp_base + ACP_HS_TX_RINGBUFADDR);
+		} else {
+			reg_dma_size = ACP_HS_RX_DMA_SIZE;
+			acp_fifo_addr = rsrc->sram_pte_offset +
+					HS_CAPT_FIFO_ADDR_OFFSET;
+			reg_fifo_addr = ACP_HS_RX_FIFOADDR;
+			reg_fifo_size = ACP_HS_RX_FIFOSIZE;
+
+			phy_addr = I2S_HS_RX_MEM_WINDOW_START + stream->reg_offset;
+			writel(phy_addr, adata->acp_base + ACP_HS_RX_RINGBUFADDR);
+		}
+		break;
+	default:
+		dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
+		return -EINVAL;
+	}
+
+	writel(DMA_SIZE, adata->acp_base + reg_dma_size);
+	writel(acp_fifo_addr, adata->acp_base + reg_fifo_addr);
+	writel(FIFO_SIZE, adata->acp_base + reg_fifo_size);
+
+	ext_int_ctrl = readl(ACP_EXTERNAL_INTR_CNTL(adata, rsrc->irqp_used));
+	ext_int_ctrl |= BIT(I2S_RX_THRESHOLD(rsrc->offset)) |
+			BIT(BT_RX_THRESHOLD(rsrc->offset)) |
+			BIT(I2S_TX_THRESHOLD(rsrc->offset)) |
+			BIT(BT_TX_THRESHOLD(rsrc->offset)) |
+			BIT(HS_RX_THRESHOLD(rsrc->offset)) |
+			BIT(HS_TX_THRESHOLD(rsrc->offset));
+
+	writel(ext_int_ctrl, ACP_EXTERNAL_INTR_CNTL(adata, rsrc->irqp_used));
+
+	return 0;
+}
+
+static int acp_i2s_startup(struct snd_pcm_substream *substream, struct snd_soc_dai *dai)
+{
+	struct acp_stream *stream = substream->runtime->private_data;
+	struct device *dev = dai->component->dev;
+	struct acp_dev_data *adata = dev_get_drvdata(dev);
+	struct acp_resource *rsrc = adata->rsrc;
+	unsigned int dir = substream->stream;
+	unsigned int irq_bit = 0;
+
+	switch (dai->driver->id) {
+	case I2S_SP_INSTANCE:
+		if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
+			irq_bit = BIT(I2S_TX_THRESHOLD(rsrc->offset));
+			stream->pte_offset = ACP_SRAM_SP_PB_PTE_OFFSET;
+			stream->fifo_offset = SP_PB_FIFO_ADDR_OFFSET;
+		} else {
+			irq_bit = BIT(I2S_RX_THRESHOLD(rsrc->offset));
+			stream->pte_offset = ACP_SRAM_SP_CP_PTE_OFFSET;
+			stream->fifo_offset = SP_CAPT_FIFO_ADDR_OFFSET;
+		}
+		break;
+	case I2S_BT_INSTANCE:
+		if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
+			irq_bit = BIT(BT_TX_THRESHOLD(rsrc->offset));
+			stream->pte_offset = ACP_SRAM_BT_PB_PTE_OFFSET;
+			stream->fifo_offset = BT_PB_FIFO_ADDR_OFFSET;
+		} else {
+			irq_bit = BIT(BT_RX_THRESHOLD(rsrc->offset));
+			stream->pte_offset = ACP_SRAM_BT_CP_PTE_OFFSET;
+			stream->fifo_offset = BT_CAPT_FIFO_ADDR_OFFSET;
+		}
+		break;
+	case I2S_HS_INSTANCE:
+		if (dir == SNDRV_PCM_STREAM_PLAYBACK) {
+			irq_bit = BIT(HS_TX_THRESHOLD(rsrc->offset));
+			stream->pte_offset = ACP_SRAM_HS_PB_PTE_OFFSET;
+			stream->fifo_offset = HS_PB_FIFO_ADDR_OFFSET;
+		} else {
+			irq_bit = BIT(HS_RX_THRESHOLD(rsrc->offset));
+			stream->pte_offset = ACP_SRAM_HS_CP_PTE_OFFSET;
+			stream->fifo_offset = HS_CAPT_FIFO_ADDR_OFFSET;
+		}
+		break;
+	default:
+		dev_err(dev, "Invalid dai id %x\n", dai->driver->id);
+		return -EINVAL;
+	}
+
+	/* Save runtime dai configuration in stream */
+	stream->id = dai->driver->id + dir;
+	stream->dai_id = dai->driver->id;
+	stream->irq_bit = irq_bit;
+	stream->dir = substream->stream;
+
+	return 0;
+}
+
+const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops = {
+	.startup = acp_i2s_startup,
+	.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);
+
+int asoc_acp_i2s_probe(struct snd_soc_dai *dai)
+{
+	struct device *dev = dai->component->dev;
+	struct acp_dev_data *adata = dev_get_drvdata(dev);
+	struct acp_resource *rsrc = adata->rsrc;
+	unsigned int val;
+
+	if (!adata->acp_base) {
+		dev_err(dev, "I2S base is NULL\n");
+		return -EINVAL;
+	}
+
+	val = readl(adata->acp_base + rsrc->i2s_pin_cfg_offset);
+	if (val != rsrc->i2s_mode) {
+		dev_err(dev, "I2S Mode not supported val %x\n", val);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(asoc_acp_i2s_probe, SND_SOC_ACP_COMMON);
+
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_ALIAS(DRV_NAME);