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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* AMD ALSA SoC PDM Driver
*
* Copyright (C) 2021 Advanced Micro Devices, Inc. All rights reserved.
*/
#include "acp6x_chip_offset_byte.h"
#define ACP_DEVICE_ID 0x15E2
#define ACP6x_PHY_BASE_ADDRESS 0x1240000
#define ACP6x_REG_START 0x1240000
#define ACP6x_REG_END 0x1250200
#define ACP6x_DEVS 3
#define ACP6x_PDM_MODE 1
#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
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,
};
struct pdm_dev_data {
u32 pdm_irq;
void __iomem *acp6x_base;
struct snd_pcm_substream *capture_stream;
};
struct pdm_stream_instance {
u16 num_pages;
u16 channels;
dma_addr_t dma_addr;
u64 bytescount;
void __iomem *acp6x_base;
};
union acp_pdm_dma_count {
struct {
u32 low;
u32 high;
} bcount;
u64 bytescount;
};
static inline u32 acp6x_readl(void __iomem *base_addr)
{
return readl(base_addr - ACP6x_PHY_BASE_ADDRESS);
}
static inline void acp6x_writel(u32 val, void __iomem *base_addr)
{
writel(val, base_addr - ACP6x_PHY_BASE_ADDRESS);
}
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