diff options
author | Ajit Kumar Pandey <AjitKumar.Pandey@amd.com> | 2021-10-19 10:09:31 +0300 |
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committer | Mark Brown <broonie@kernel.org> | 2021-10-20 13:12:49 +0300 |
commit | 623621a9f9e1a2f4bf1c69d066b7de3de2b12df6 (patch) | |
tree | ffb23b16cff33e1c371a10672ddfe130b58efc57 /sound/soc/amd/acp/amd.h | |
parent | bfceb9c2160109ef8c9305e0a726c7fe6cd9cd9e (diff) | |
download | linux-623621a9f9e1a2f4bf1c69d066b7de3de2b12df6.tar.xz |
ASoC: amd: Add common framework to support I2S on ACP SOC
We are using legacy way of exposing dais and DMA configuration that
requires separate driver modules for various ACP SOC with almost
similar hw configuration. Moreover the legacy approach requires
separate I2S and DMA module platform devices registration and need
machine specific quirk to control various I2S endpoints. Add generic
dai driver and platform driver for I2S controller on ACP hw block.
This common framework can be used by various ACP platform devices
that shares common specs.
Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
Link: https://lore.kernel.org/r/20211019070938.5076-2-AjitKumar.Pandey@amd.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/amd/acp/amd.h')
-rw-r--r-- | sound/soc/amd/acp/amd.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/sound/soc/amd/acp/amd.h b/sound/soc/amd/acp/amd.h new file mode 100644 index 000000000000..ecb53285526c --- /dev/null +++ b/sound/soc/amd/acp/amd.h @@ -0,0 +1,140 @@ +/* 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. All rights reserved. + * + * Author: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com> + */ + +#ifndef __AMD_ACP_H +#define __AMD_ACP_H + +#include <sound/pcm.h> +#include <sound/soc-acpi.h> +#include "chip_offset_byte.h" + +#define I2S_SP_INSTANCE 0x00 +#define I2S_BT_INSTANCE 0x01 + +#define MEM_WINDOW_START 0x4000000 + +#define ACP_I2S_REG_START 0x1242400 +#define ACP_I2S_REG_END 0x1242810 +#define ACP3x_I2STDM_REG_START 0x1242400 +#define ACP3x_I2STDM_REG_END 0x1242410 +#define ACP3x_BT_TDM_REG_START 0x1242800 +#define ACP3x_BT_TDM_REG_END 0x1242810 +#define I2S_MODE 0x04 +#define I2S_RX_THRESHOLD 27 +#define I2S_TX_THRESHOLD 28 +#define BT_TX_THRESHOLD 26 +#define BT_RX_THRESHOLD 25 + +#define ACP_SRAM_PTE_OFFSET 0x02052800 + +#define ACP_SRAM_SP_PB_PTE_OFFSET 0x0 +#define ACP_SRAM_SP_CP_PTE_OFFSET 0x100 +#define ACP_SRAM_BT_PB_PTE_OFFSET 0x200 +#define ACP_SRAM_BT_CP_PTE_OFFSET 0x300 +#define PAGE_SIZE_4K_ENABLE 0x2 + +#define I2S_SP_TX_MEM_WINDOW_START 0x4000000 +#define I2S_SP_RX_MEM_WINDOW_START 0x4020000 +#define I2S_BT_TX_MEM_WINDOW_START 0x4040000 +#define I2S_BT_RX_MEM_WINDOW_START 0x4060000 + +#define SP_PB_FIFO_ADDR_OFFSET 0x500 +#define SP_CAPT_FIFO_ADDR_OFFSET 0x700 +#define BT_PB_FIFO_ADDR_OFFSET 0x900 +#define BT_CAPT_FIFO_ADDR_OFFSET 0xB00 +#define PLAYBACK_MIN_NUM_PERIODS 2 +#define PLAYBACK_MAX_NUM_PERIODS 8 +#define PLAYBACK_MAX_PERIOD_SIZE 8192 +#define PLAYBACK_MIN_PERIOD_SIZE 1024 +#define CAPTURE_MIN_NUM_PERIODS 2 +#define CAPTURE_MAX_NUM_PERIODS 8 +#define CAPTURE_MAX_PERIOD_SIZE 8192 +#define CAPTURE_MIN_PERIOD_SIZE 1024 + +#define MAX_BUFFER 65536 +#define MIN_BUFFER MAX_BUFFER +#define FIFO_SIZE 0x100 +#define DMA_SIZE 0x40 +#define FRM_LEN 0x100 + +#define ACP3x_ITER_IRER_SAMP_LEN_MASK 0x38 + +#define ACP_MAX_STREAM 6 + +struct acp_stream { + struct snd_pcm_substream *substream; + int irq_bit; + int dai_id; + int id; + u64 bytescount; + u32 reg_offset; + u32 pte_offset; + u32 fifo_offset; +}; + +struct acp_dev_data { + char *name; + struct device *dev; + void __iomem *acp_base; + unsigned int i2s_irq; + + /* SOC specific dais */ + struct snd_soc_dai_driver *dai_driver; + int num_dai; + + struct acp_stream *stream[ACP_MAX_STREAM]; +}; + +extern const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops; + +int asoc_acp_i2s_probe(struct snd_soc_dai *dai); +int acp_platform_register(struct device *dev); +int acp_platform_unregister(struct device *dev); + +static inline u64 acp_get_byte_count(struct acp_dev_data *adata, int dai_id, int direction) +{ + u64 byte_count, low = 0, high = 0; + + if (direction == SNDRV_PCM_STREAM_PLAYBACK) { + switch (dai_id) { + case I2S_BT_INSTANCE: + high = readl(adata->acp_base + ACP_BT_TX_LINEARPOSITIONCNTR_HIGH); + low = readl(adata->acp_base + ACP_BT_TX_LINEARPOSITIONCNTR_LOW); + break; + case I2S_SP_INSTANCE: + high = readl(adata->acp_base + ACP_I2S_TX_LINEARPOSITIONCNTR_HIGH); + low = readl(adata->acp_base + ACP_I2S_TX_LINEARPOSITIONCNTR_LOW); + break; + default: + dev_err(adata->dev, "Invalid dai id %x\n", dai_id); + return -EINVAL; + } + } else { + switch (dai_id) { + case I2S_BT_INSTANCE: + high = readl(adata->acp_base + ACP_BT_RX_LINEARPOSITIONCNTR_HIGH); + low = readl(adata->acp_base + ACP_BT_RX_LINEARPOSITIONCNTR_LOW); + break; + case I2S_SP_INSTANCE: + high = readl(adata->acp_base + ACP_I2S_RX_LINEARPOSITIONCNTR_HIGH); + low = readl(adata->acp_base + ACP_I2S_RX_LINEARPOSITIONCNTR_LOW); + break; + default: + dev_err(adata->dev, "Invalid dai id %x\n", dai_id); + return -EINVAL; + } + } + /* Get 64 bit value from two 32 bit registers */ + byte_count = (high << 32) | low; + + return byte_count; +} + +#endif |