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/* 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.h>
#include <sound/soc-acpi.h>
#include <sound/soc-dai.h>
#include "chip_offset_byte.h"
#define ACP3X_DEV 3
#define ACP6X_DEV 6
#define DMIC_INSTANCE 0x00
#define I2S_SP_INSTANCE 0x01
#define I2S_BT_INSTANCE 0x02
#define I2S_HS_INSTANCE 0x03
#define MEM_WINDOW_START 0x4080000
#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 THRESHOLD(bit, base) ((bit) + (base))
#define I2S_RX_THRESHOLD(base) THRESHOLD(7, base)
#define I2S_TX_THRESHOLD(base) THRESHOLD(8, base)
#define BT_TX_THRESHOLD(base) THRESHOLD(6, base)
#define BT_RX_THRESHOLD(base) THRESHOLD(5, base)
#define HS_TX_THRESHOLD(base) THRESHOLD(4, base)
#define HS_RX_THRESHOLD(base) THRESHOLD(3, base)
#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 ACP_SRAM_PDM_PTE_OFFSET 0x400
#define ACP_SRAM_HS_PB_PTE_OFFSET 0x500
#define ACP_SRAM_HS_CP_PTE_OFFSET 0x600
#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 I2S_HS_TX_MEM_WINDOW_START 0x40A0000
#define I2S_HS_RX_MEM_WINDOW_START 0x40C0000
#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 HS_PB_FIFO_ADDR_OFFSET 0xD00
#define HS_CAPT_FIFO_ADDR_OFFSET 0xF00
#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 8
#define TDM_ENABLE 1
#define TDM_DISABLE 0
#define SLOT_WIDTH_8 0x8
#define SLOT_WIDTH_16 0x10
#define SLOT_WIDTH_24 0x18
#define SLOT_WIDTH_32 0x20
#define ACP6X_PGFSM_CONTROL 0x1024
#define ACP6X_PGFSM_STATUS 0x1028
#define ACP_SOFT_RST_DONE_MASK 0x00010001
#define ACP_PGFSM_CNTL_POWER_ON_MASK 0x01
#define ACP_PGFSM_CNTL_POWER_OFF_MASK 0x00
#define ACP_PGFSM_STATUS_MASK 0x03
#define ACP_POWERED_ON 0x00
#define ACP_POWER_ON_IN_PROGRESS 0x01
#define ACP_POWERED_OFF 0x02
#define ACP_POWER_OFF_IN_PROGRESS 0x03
#define ACP_ERROR_MASK 0x20000000
#define ACP_EXT_INTR_STAT_CLEAR_MASK 0xffffffff
#define ACP_TIMEOUT 500
#define DELAY_US 5
#define ACP_SUSPEND_DELAY_MS 2000
#define PDM_DMA_STAT 0x10
#define PDM_DMA_INTR_MASK 0x10000
#define PDM_DEC_64 0x2
#define PDM_CLK_FREQ_MASK 0x07
#define PDM_MISC_CTRL_MASK 0x10
#define PDM_ENABLE 0x01
#define PDM_DISABLE 0x00
#define DMA_EN_MASK 0x02
#define DELAY_US 5
#define PDM_TIMEOUT 1000
#define ACP_REGION2_OFFSET 0x02000000
struct acp_chip_info {
char *name; /* Platform name */
unsigned int acp_rev; /* ACP Revision id */
void __iomem *base; /* ACP memory PCI base */
struct platform_device *chip_pdev;
};
struct acp_stream {
struct list_head list;
struct snd_pcm_substream *substream;
int irq_bit;
int dai_id;
int id;
int dir;
u64 bytescount;
u32 reg_offset;
u32 pte_offset;
u32 fifo_offset;
};
struct acp_resource {
int offset;
int no_of_ctrls;
int irqp_used;
bool soc_mclk;
u32 irq_reg_offset;
u32 i2s_pin_cfg_offset;
int i2s_mode;
u64 scratch_reg_offset;
u64 sram_pte_offset;
};
struct acp_dev_data {
char *name;
struct device *dev;
void __iomem *acp_base;
unsigned int i2s_irq;
bool tdm_mode;
/* SOC specific dais */
struct snd_soc_dai_driver *dai_driver;
int num_dai;
struct list_head stream_list;
spinlock_t acp_lock;
struct snd_soc_acpi_mach *machines;
struct platform_device *mach_dev;
u32 bclk_div;
u32 lrclk_div;
struct acp_resource *rsrc;
u32 ch_mask;
u32 tdm_tx_fmt[3];
u32 tdm_rx_fmt[3];
u32 xfer_tx_resolution[3];
u32 xfer_rx_resolution[3];
};
union acp_i2stdm_mstrclkgen {
struct {
u32 i2stdm_master_mode : 1;
u32 i2stdm_format_mode : 1;
u32 i2stdm_lrclk_div_val : 9;
u32 i2stdm_bclk_div_val : 11;
u32:10;
} bitfields, bits;
u32 u32_all;
};
extern const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops;
extern const struct snd_soc_dai_ops acp_dmic_dai_ops;
int acp_platform_register(struct device *dev);
int acp_platform_unregister(struct device *dev);
int acp_machine_select(struct acp_dev_data *adata);
int smn_read(struct pci_dev *dev, u32 smn_addr);
int smn_write(struct pci_dev *dev, u32 smn_addr, u32 data);
int acp_init(struct acp_chip_info *chip);
int acp_deinit(void __iomem *base);
void acp_enable_interrupts(struct acp_dev_data *adata);
void acp_disable_interrupts(struct acp_dev_data *adata);
/* Machine configuration */
int snd_amd_acp_find_config(struct pci_dev *pci);
void config_pte_for_stream(struct acp_dev_data *adata, struct acp_stream *stream);
void config_acp_dma(struct acp_dev_data *adata, struct acp_stream *stream, int size);
void restore_acp_pdm_params(struct snd_pcm_substream *substream,
struct acp_dev_data *adata);
int restore_acp_i2s_params(struct snd_pcm_substream *substream,
struct acp_dev_data *adata, struct acp_stream *stream);
static inline u64 acp_get_byte_count(struct acp_dev_data *adata, int dai_id, int direction)
{
u64 byte_count = 0, 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;
case I2S_HS_INSTANCE:
high = readl(adata->acp_base + ACP_HS_TX_LINEARPOSITIONCNTR_HIGH);
low = readl(adata->acp_base + ACP_HS_TX_LINEARPOSITIONCNTR_LOW);
break;
default:
dev_err(adata->dev, "Invalid dai id %x\n", dai_id);
goto POINTER_RETURN_BYTES;
}
} 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;
case I2S_HS_INSTANCE:
high = readl(adata->acp_base + ACP_HS_RX_LINEARPOSITIONCNTR_HIGH);
low = readl(adata->acp_base + ACP_HS_RX_LINEARPOSITIONCNTR_LOW);
break;
case DMIC_INSTANCE:
high = readl(adata->acp_base + ACP_WOV_RX_LINEARPOSITIONCNTR_HIGH);
low = readl(adata->acp_base + ACP_WOV_RX_LINEARPOSITIONCNTR_LOW);
break;
default:
dev_err(adata->dev, "Invalid dai id %x\n", dai_id);
goto POINTER_RETURN_BYTES;
}
}
/* Get 64 bit value from two 32 bit registers */
byte_count = (high << 32) | low;
POINTER_RETURN_BYTES:
return byte_count;
}
static inline void acp_set_i2s_clk(struct acp_dev_data *adata, int dai_id)
{
union acp_i2stdm_mstrclkgen mclkgen;
u32 master_reg;
switch (dai_id) {
case I2S_SP_INSTANCE:
master_reg = ACP_I2STDM0_MSTRCLKGEN;
break;
case I2S_BT_INSTANCE:
master_reg = ACP_I2STDM1_MSTRCLKGEN;
break;
case I2S_HS_INSTANCE:
master_reg = ACP_I2STDM2_MSTRCLKGEN;
break;
default:
master_reg = ACP_I2STDM0_MSTRCLKGEN;
break;
}
mclkgen.bits.i2stdm_master_mode = 0x1;
mclkgen.bits.i2stdm_format_mode = 0x00;
mclkgen.bits.i2stdm_bclk_div_val = adata->bclk_div;
mclkgen.bits.i2stdm_lrclk_div_val = adata->lrclk_div;
writel(mclkgen.u32_all, adata->acp_base + master_reg);
}
#endif
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