/* SPDX-License-Identifier: GPL-2.0+ */
/*
* AMD ALSA SoC PDM Driver
*
* Copyright (C) 2022, 2023 Advanced Micro Devices, Inc. All rights reserved.
*/
#include <linux/soundwire/sdw_amd.h>
#include <sound/acp63_chip_offset_byte.h>
#define ACP_DEVICE_ID 0x15E2
#define ACP63_REG_START 0x1240000
#define ACP63_REG_END 0x125C000
#define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK 0x00010001
#define ACP_PGFSM_CNTL_POWER_ON_MASK 1
#define ACP_PGFSM_CNTL_POWER_OFF_MASK 0
#define ACP_PGFSM_STATUS_MASK 3
#define ACP_POWERED_ON 0
#define ACP_POWER_ON_IN_PROGRESS 1
#define ACP_POWERED_OFF 2
#define ACP_POWER_OFF_IN_PROGRESS 3
#define ACP_ERROR_MASK 0x20000000
#define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
#define PDM_DMA_STAT 0x10
#define PDM_DMA_INTR_MASK 0x10000
#define ACP_ERROR_STAT 29
#define PDM_DECIMATION_FACTOR 2
#define ACP_PDM_CLK_FREQ_MASK 7
#define ACP_WOV_GAIN_CONTROL GENMASK(4, 3)
#define ACP_PDM_ENABLE 1
#define ACP_PDM_DISABLE 0
#define ACP_PDM_DMA_EN_STATUS 2
#define TWO_CH 2
#define DELAY_US 5
#define ACP_COUNTER 20000
#define ACP_SRAM_PTE_OFFSET 0x03800000
#define PAGE_SIZE_4K_ENABLE 2
#define PDM_PTE_OFFSET 0
#define PDM_MEM_WINDOW_START 0x4000000
#define CAPTURE_MIN_NUM_PERIODS 4
#define CAPTURE_MAX_NUM_PERIODS 4
#define CAPTURE_MAX_PERIOD_SIZE 8192
#define CAPTURE_MIN_PERIOD_SIZE 4096
#define MAX_BUFFER (CAPTURE_MAX_PERIOD_SIZE * CAPTURE_MAX_NUM_PERIODS)
#define MIN_BUFFER MAX_BUFFER
/* time in ms for runtime suspend delay */
#define ACP_SUSPEND_DELAY_MS 2000
#define ACP_DMIC_DEV 2
#define ACP63_DMIC_ADDR 2
#define ACP63_SDW_ADDR 5
#define AMD_SDW_MAX_MANAGERS 2
/* time in ms for acp timeout */
#define ACP_TIMEOUT 500
#define ACP_SDW0_STAT BIT(21)
#define ACP_SDW1_STAT BIT(2)
#define ACP_ERROR_IRQ BIT(29)
#define ACP_AUDIO0_TX_THRESHOLD 0x1c
#define ACP_AUDIO1_TX_THRESHOLD 0x1a
#define ACP_AUDIO2_TX_THRESHOLD 0x18
#define ACP_AUDIO0_RX_THRESHOLD 0x1b
#define ACP_AUDIO1_RX_THRESHOLD 0x19
#define ACP_AUDIO2_RX_THRESHOLD 0x17
#define ACP_P1_AUDIO1_TX_THRESHOLD BIT(6)
#define ACP_P1_AUDIO1_RX_THRESHOLD BIT(5)
#define ACP_SDW_DMA_IRQ_MASK 0x1F800000
#define ACP_P1_SDW_DMA_IRQ_MASK 0x60
#define ACP63_SDW0_DMA_MAX_STREAMS 6
#define ACP63_SDW1_DMA_MAX_STREAMS 2
#define ACP_P1_AUDIO_TX_THRESHOLD 6
/*
* Below entries describes SDW0 instance DMA stream id and DMA irq bit mapping
* in ACP_EXTENAL_INTR_CNTL register.
* Stream id IRQ Bit
* 0 (SDW0_AUDIO0_TX) 28
* 1 (SDW0_AUDIO1_TX) 26
* 2 (SDW0_AUDIO2_TX) 24
* 3 (SDW0_AUDIO0_RX) 27
* 4 (SDW0_AUDIO1_RX) 25
* 5 (SDW0_AUDIO2_RX) 23
*/
#define SDW0_DMA_TX_IRQ_MASK(i) (ACP_AUDIO0_TX_THRESHOLD - (2 * (i)))
#define SDW0_DMA_RX_IRQ_MASK(i) (ACP_AUDIO0_RX_THRESHOLD - (2 * ((i) - 3)))
/*
* Below entries describes SDW1 instance DMA stream id and DMA irq bit mapping
* in ACP_EXTENAL_INTR_CNTL1 register.
* Stream id IRQ Bit
* 0 (SDW1_AUDIO1_TX) 6
* 1 (SDW1_AUDIO1_RX) 5
*/
#define SDW1_DMA_IRQ_MASK(i) (ACP_P1_AUDIO_TX_THRESHOLD - (i))
#define ACP_DELAY_US 5
#define ACP_SDW_RING_BUFF_ADDR_OFFSET (128 * 1024)
#define SDW0_MEM_WINDOW_START 0x4800000
#define ACP_SDW_SRAM_PTE_OFFSET 0x03800400
#define SDW0_PTE_OFFSET 0x400
#define SDW_FIFO_SIZE 0x100
#define SDW_DMA_SIZE 0x40
#define ACP_SDW0_FIFO_OFFSET 0x100
#define ACP_SDW_PTE_OFFSET 0x100
#define SDW_FIFO_OFFSET 0x100
#define SDW_PTE_OFFSET(i) (SDW0_PTE_OFFSET + ((i) * 0x600))
#define ACP_SDW_FIFO_OFFSET(i) (ACP_SDW0_FIFO_OFFSET + ((i) * 0x500))
#define SDW_MEM_WINDOW_START(i) (SDW0_MEM_WINDOW_START + ((i) * 0xC0000))
#define SDW_PLAYBACK_MIN_NUM_PERIODS 2
#define SDW_PLAYBACK_MAX_NUM_PERIODS 8
#define SDW_PLAYBACK_MAX_PERIOD_SIZE 8192
#define SDW_PLAYBACK_MIN_PERIOD_SIZE 1024
#define SDW_CAPTURE_MIN_NUM_PERIODS 2
#define SDW_CAPTURE_MAX_NUM_PERIODS 8
#define SDW_CAPTURE_MAX_PERIOD_SIZE 8192
#define SDW_CAPTURE_MIN_PERIOD_SIZE 1024
#define SDW_MAX_BUFFER (SDW_PLAYBACK_MAX_PERIOD_SIZE * SDW_PLAYBACK_MAX_NUM_PERIODS)
#define SDW_MIN_BUFFER SDW_MAX_BUFFER
enum acp_config {
ACP_CONFIG_0 = 0,
ACP_CONFIG_1,
ACP_CONFIG_2,
ACP_CONFIG_3,
ACP_CONFIG_4,
ACP_CONFIG_5,
ACP_CONFIG_6,
ACP_CONFIG_7,
ACP_CONFIG_8,
ACP_CONFIG_9,
ACP_CONFIG_10,
ACP_CONFIG_11,
ACP_CONFIG_12,
ACP_CONFIG_13,
ACP_CONFIG_14,
ACP_CONFIG_15,
};
enum amd_sdw0_channel {
ACP_SDW0_AUDIO0_TX = 0,
ACP_SDW0_AUDIO1_TX,
ACP_SDW0_AUDIO2_TX,
ACP_SDW0_AUDIO0_RX,
ACP_SDW0_AUDIO1_RX,
ACP_SDW0_AUDIO2_RX,
};
enum amd_sdw1_channel {
ACP_SDW1_AUDIO1_TX,
ACP_SDW1_AUDIO1_RX,
};
struct pdm_stream_instance {
u16 num_pages;
u16 channels;
dma_addr_t dma_addr;
u64 bytescount;
void __iomem *acp63_base;
};
struct pdm_dev_data {
u32 pdm_irq;
void __iomem *acp63_base;
struct mutex *acp_lock;
struct snd_pcm_substream *capture_stream;
};
struct sdw_dma_dev_data {
void __iomem *acp_base;
struct mutex *acp_lock; /* used to protect acp common register access */
struct snd_pcm_substream *sdw0_dma_stream[ACP63_SDW0_DMA_MAX_STREAMS];
struct snd_pcm_substream *sdw1_dma_stream[ACP63_SDW1_DMA_MAX_STREAMS];
};
struct acp_sdw_dma_stream {
u16 num_pages;
u16 channels;
u32 stream_id;
u32 instance;
dma_addr_t dma_addr;
u64 bytescount;
};
union acp_sdw_dma_count {
struct {
u32 low;
u32 high;
} bcount;
u64 bytescount;
};
struct sdw_dma_ring_buf_reg {
u32 reg_dma_size;
u32 reg_fifo_addr;
u32 reg_fifo_size;
u32 reg_ring_buf_size;
u32 reg_ring_buf_addr;
u32 water_mark_size_reg;
u32 pos_low_reg;
u32 pos_high_reg;
};
/**
* struct acp63_dev_data - acp pci driver context
* @acp63_base: acp mmio base
* @res: resource
* @pdm_dev: ACP PDM controller platform device
* @dmic_codec: platform device for DMIC Codec
* sdw_dma_dev: platform device for SoundWire DMA controller
* @mach_dev: platform device for machine driver to support ACP PDM/SoundWire configuration
* @acp_lock: used to protect acp common registers
* @info: SoundWire AMD information found in ACPI tables
* @sdw: SoundWire context for all SoundWire manager instances
* @machine: ACPI machines for SoundWire interface
* @is_sdw_dev: flag set to true when any SoundWire manager instances are available
* @is_pdm_dev: flag set to true when ACP PDM controller exists
* @is_pdm_config: flat set to true when PDM configuration is selected from BIOS
* @is_sdw_config: flag set to true when SDW configuration is selected from BIOS
* @sdw_en_stat: flag set to true when any one of the SoundWire manager instance is enabled
* @addr: pci ioremap address
* @reg_range: ACP reigister range
* @sdw0-dma_intr_stat: DMA interrupt status array for SoundWire manager-SW0 instance
* @sdw_dma_intr_stat: DMA interrupt status array for SoundWire manager-SW1 instance
*/
struct acp63_dev_data {
void __iomem *acp63_base;
struct resource *res;
struct platform_device *pdm_dev;
struct platform_device *dmic_codec_dev;
struct platform_device *sdw_dma_dev;
struct platform_device *mach_dev;
struct mutex acp_lock; /* protect shared registers */
struct sdw_amd_acpi_info info;
/* sdw context allocated by SoundWire driver */
struct sdw_amd_ctx *sdw;
struct snd_soc_acpi_mach *machines;
bool is_sdw_dev;
bool is_pdm_dev;
bool is_pdm_config;
bool is_sdw_config;
bool sdw_en_stat;
u32 addr;
u32 reg_range;
u16 sdw0_dma_intr_stat[ACP63_SDW0_DMA_MAX_STREAMS];
u16 sdw1_dma_intr_stat[ACP63_SDW1_DMA_MAX_STREAMS];
};
int snd_amd_acp_find_config(struct pci_dev *pci);
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