1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ 2 /* 3 * This file is provided under a dual BSD/GPLv2 license. When using or 4 * redistributing this file, you may do so under either license. 5 * 6 * Copyright(c) 2021 Advanced Micro Devices, Inc. All rights reserved. 7 * 8 * Author: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com> 9 */ 10 11 #ifndef __AMD_ACP_H 12 #define __AMD_ACP_H 13 14 #include <sound/pcm.h> 15 #include <sound/soc-acpi.h> 16 #include "chip_offset_byte.h" 17 18 #define I2S_SP_INSTANCE 0x00 19 #define I2S_BT_INSTANCE 0x01 20 21 #define MEM_WINDOW_START 0x4000000 22 23 #define ACP_I2S_REG_START 0x1242400 24 #define ACP_I2S_REG_END 0x1242810 25 #define ACP3x_I2STDM_REG_START 0x1242400 26 #define ACP3x_I2STDM_REG_END 0x1242410 27 #define ACP3x_BT_TDM_REG_START 0x1242800 28 #define ACP3x_BT_TDM_REG_END 0x1242810 29 #define I2S_MODE 0x04 30 #define I2S_RX_THRESHOLD 27 31 #define I2S_TX_THRESHOLD 28 32 #define BT_TX_THRESHOLD 26 33 #define BT_RX_THRESHOLD 25 34 35 #define ACP_SRAM_PTE_OFFSET 0x02052800 36 37 #define ACP_SRAM_SP_PB_PTE_OFFSET 0x0 38 #define ACP_SRAM_SP_CP_PTE_OFFSET 0x100 39 #define ACP_SRAM_BT_PB_PTE_OFFSET 0x200 40 #define ACP_SRAM_BT_CP_PTE_OFFSET 0x300 41 #define PAGE_SIZE_4K_ENABLE 0x2 42 43 #define I2S_SP_TX_MEM_WINDOW_START 0x4000000 44 #define I2S_SP_RX_MEM_WINDOW_START 0x4020000 45 #define I2S_BT_TX_MEM_WINDOW_START 0x4040000 46 #define I2S_BT_RX_MEM_WINDOW_START 0x4060000 47 48 #define SP_PB_FIFO_ADDR_OFFSET 0x500 49 #define SP_CAPT_FIFO_ADDR_OFFSET 0x700 50 #define BT_PB_FIFO_ADDR_OFFSET 0x900 51 #define BT_CAPT_FIFO_ADDR_OFFSET 0xB00 52 #define PLAYBACK_MIN_NUM_PERIODS 2 53 #define PLAYBACK_MAX_NUM_PERIODS 8 54 #define PLAYBACK_MAX_PERIOD_SIZE 8192 55 #define PLAYBACK_MIN_PERIOD_SIZE 1024 56 #define CAPTURE_MIN_NUM_PERIODS 2 57 #define CAPTURE_MAX_NUM_PERIODS 8 58 #define CAPTURE_MAX_PERIOD_SIZE 8192 59 #define CAPTURE_MIN_PERIOD_SIZE 1024 60 61 #define MAX_BUFFER 65536 62 #define MIN_BUFFER MAX_BUFFER 63 #define FIFO_SIZE 0x100 64 #define DMA_SIZE 0x40 65 #define FRM_LEN 0x100 66 67 #define ACP3x_ITER_IRER_SAMP_LEN_MASK 0x38 68 69 #define ACP_MAX_STREAM 6 70 71 struct acp_stream { 72 struct snd_pcm_substream *substream; 73 int irq_bit; 74 int dai_id; 75 int id; 76 u64 bytescount; 77 u32 reg_offset; 78 u32 pte_offset; 79 u32 fifo_offset; 80 }; 81 82 struct acp_dev_data { 83 char *name; 84 struct device *dev; 85 void __iomem *acp_base; 86 unsigned int i2s_irq; 87 88 /* SOC specific dais */ 89 struct snd_soc_dai_driver *dai_driver; 90 int num_dai; 91 92 struct acp_stream *stream[ACP_MAX_STREAM]; 93 94 struct snd_soc_acpi_mach *machines; 95 struct platform_device *mach_dev; 96 }; 97 98 extern const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops; 99 100 int asoc_acp_i2s_probe(struct snd_soc_dai *dai); 101 int acp_platform_register(struct device *dev); 102 int acp_platform_unregister(struct device *dev); 103 104 int acp_machine_select(struct acp_dev_data *adata); 105 106 static inline u64 acp_get_byte_count(struct acp_dev_data *adata, int dai_id, int direction) 107 { 108 u64 byte_count, low = 0, high = 0; 109 110 if (direction == SNDRV_PCM_STREAM_PLAYBACK) { 111 switch (dai_id) { 112 case I2S_BT_INSTANCE: 113 high = readl(adata->acp_base + ACP_BT_TX_LINEARPOSITIONCNTR_HIGH); 114 low = readl(adata->acp_base + ACP_BT_TX_LINEARPOSITIONCNTR_LOW); 115 break; 116 case I2S_SP_INSTANCE: 117 high = readl(adata->acp_base + ACP_I2S_TX_LINEARPOSITIONCNTR_HIGH); 118 low = readl(adata->acp_base + ACP_I2S_TX_LINEARPOSITIONCNTR_LOW); 119 break; 120 default: 121 dev_err(adata->dev, "Invalid dai id %x\n", dai_id); 122 return -EINVAL; 123 } 124 } else { 125 switch (dai_id) { 126 case I2S_BT_INSTANCE: 127 high = readl(adata->acp_base + ACP_BT_RX_LINEARPOSITIONCNTR_HIGH); 128 low = readl(adata->acp_base + ACP_BT_RX_LINEARPOSITIONCNTR_LOW); 129 break; 130 case I2S_SP_INSTANCE: 131 high = readl(adata->acp_base + ACP_I2S_RX_LINEARPOSITIONCNTR_HIGH); 132 low = readl(adata->acp_base + ACP_I2S_RX_LINEARPOSITIONCNTR_LOW); 133 break; 134 default: 135 dev_err(adata->dev, "Invalid dai id %x\n", dai_id); 136 return -EINVAL; 137 } 138 } 139 /* Get 64 bit value from two 32 bit registers */ 140 byte_count = (high << 32) | low; 141 142 return byte_count; 143 } 144 145 #endif 146