xref: /openbmc/linux/sound/soc/amd/yc/acp6x.h (revision bddcfb08)
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * AMD ALSA SoC PDM Driver
4  *
5  * Copyright (C) 2021 Advanced Micro Devices, Inc. All rights reserved.
6  */
7 
8 #include "acp6x_chip_offset_byte.h"
9 
10 #define ACP_DEVICE_ID 0x15E2
11 #define ACP6x_PHY_BASE_ADDRESS 0x1240000
12 #define ACP6x_REG_START		0x1240000
13 #define ACP6x_REG_END		0x1250200
14 #define ACP6x_DEVS		3
15 #define ACP6x_PDM_MODE		1
16 
17 #define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK	0x00010001
18 #define ACP_PGFSM_CNTL_POWER_ON_MASK	1
19 #define ACP_PGFSM_CNTL_POWER_OFF_MASK	0
20 #define ACP_PGFSM_STATUS_MASK		3
21 #define ACP_POWERED_ON			0
22 #define ACP_POWER_ON_IN_PROGRESS	1
23 #define ACP_POWERED_OFF			2
24 #define ACP_POWER_OFF_IN_PROGRESS	3
25 
26 #define ACP_ERROR_MASK 0x20000000
27 #define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
28 #define PDM_DMA_STAT 0x10
29 
30 #define PDM_DMA_INTR_MASK	0x10000
31 #define ACP_ERROR_STAT	29
32 #define PDM_DECIMATION_FACTOR	2
33 #define ACP_PDM_CLK_FREQ_MASK	7
34 #define ACP_WOV_GAIN_CONTROL	GENMASK(4, 3)
35 #define ACP_PDM_ENABLE		1
36 #define ACP_PDM_DISABLE		0
37 #define ACP_PDM_DMA_EN_STATUS	2
38 #define TWO_CH		2
39 #define DELAY_US	5
40 #define ACP_COUNTER	20000
41 
42 #define ACP_SRAM_PTE_OFFSET	0x03800000
43 #define PAGE_SIZE_4K_ENABLE	2
44 #define PDM_PTE_OFFSET		0
45 #define PDM_MEM_WINDOW_START	0x4000000
46 
47 #define CAPTURE_MIN_NUM_PERIODS     4
48 #define CAPTURE_MAX_NUM_PERIODS     4
49 #define CAPTURE_MAX_PERIOD_SIZE     8192
50 #define CAPTURE_MIN_PERIOD_SIZE     4096
51 
52 #define MAX_BUFFER (CAPTURE_MAX_PERIOD_SIZE * CAPTURE_MAX_NUM_PERIODS)
53 #define MIN_BUFFER MAX_BUFFER
54 
55 /* time in ms for runtime suspend delay */
56 #define ACP_SUSPEND_DELAY_MS	2000
57 
58 enum acp_config {
59 	ACP_CONFIG_0 = 0,
60 	ACP_CONFIG_1,
61 	ACP_CONFIG_2,
62 	ACP_CONFIG_3,
63 	ACP_CONFIG_4,
64 	ACP_CONFIG_5,
65 	ACP_CONFIG_6,
66 	ACP_CONFIG_7,
67 	ACP_CONFIG_8,
68 	ACP_CONFIG_9,
69 	ACP_CONFIG_10,
70 	ACP_CONFIG_11,
71 	ACP_CONFIG_12,
72 	ACP_CONFIG_13,
73 	ACP_CONFIG_14,
74 	ACP_CONFIG_15,
75 };
76 
77 struct pdm_dev_data {
78 	u32 pdm_irq;
79 	void __iomem *acp6x_base;
80 	struct snd_pcm_substream *capture_stream;
81 };
82 
83 struct pdm_stream_instance {
84 	u16 num_pages;
85 	u16 channels;
86 	dma_addr_t dma_addr;
87 	u64 bytescount;
88 	void __iomem *acp6x_base;
89 };
90 
91 union acp_pdm_dma_count {
92 	struct {
93 	u32 low;
94 	u32 high;
95 	} bcount;
96 	u64 bytescount;
97 };
98 
acp6x_readl(void __iomem * base_addr)99 static inline u32 acp6x_readl(void __iomem *base_addr)
100 {
101 	return readl(base_addr - ACP6x_PHY_BASE_ADDRESS);
102 }
103 
acp6x_writel(u32 val,void __iomem * base_addr)104 static inline void acp6x_writel(u32 val, void __iomem *base_addr)
105 {
106 	writel(val, base_addr - ACP6x_PHY_BASE_ADDRESS);
107 }
108 
109 int snd_amd_acp_find_config(struct pci_dev *pci);
110 
111