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
acp_get_byte_count(struct acp_dev_data * adata,int dai_id,int direction)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