1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* AMD ACP PCI driver callback routines for ACP7.x
* platforms.
*
* Copyright 2026 Advanced Micro Devices, Inc.
*/
#include <linux/device.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/types.h>
#include "acp7x.h"
static int acp7x_power_on(void __iomem *acp_base)
{
u32 val = 0;
val = readl(acp_base + ACP_PGFSM_STATUS);
if (!(val & ACP7X_PGFSM_STATUS_MASK))
return 0;
writel(ACP7X_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL);
val = readl(acp_base + ACP_PGFSM_CONTROL);
return readl_poll_timeout(acp_base + ACP_PGFSM_STATUS, val,
((val & ACP7X_PGFSM_STATUS_MASK) == 0), DELAY_US, ACP7X_TIMEOUT);
}
static int acp7x_reset(void __iomem *acp_base)
{
u32 val;
int ret;
writel(1, acp_base + ACP_SOFT_RESET);
ret = readl_poll_timeout(acp_base + ACP_SOFT_RESET, val,
val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK,
DELAY_US, ACP7X_TIMEOUT);
if (ret)
return ret;
writel(0, acp_base + ACP_SOFT_RESET);
return readl_poll_timeout(acp_base + ACP_SOFT_RESET, val, !val, DELAY_US, ACP7X_TIMEOUT);
}
static int acp7x_init(void __iomem *acp_base, struct device *dev)
{
int ret;
ret = acp7x_power_on(acp_base);
if (ret) {
dev_err(dev, "ACP power on failed\n");
return ret;
}
writel(0x01, acp_base + ACP_CONTROL);
ret = acp7x_reset(acp_base);
if (ret) {
dev_err(dev, "ACP reset failed\n");
return ret;
}
writel(0, acp_base + ACP_ZSC_DSP_CTRL);
return 0;
}
static int acp7x_deinit(void __iomem *acp_base, struct device *dev)
{
int ret;
ret = acp7x_reset(acp_base);
if (ret) {
dev_err(dev, "ACP reset failed\n");
return ret;
}
writel(0x01, acp_base + ACP_ZSC_DSP_CTRL);
return 0;
}
static int __maybe_unused snd_acp7x_suspend(struct device *dev)
{
struct acp7x_dev_data *adata;
int ret;
adata = dev_get_drvdata(dev);
ret = acp_hw_deinit(adata, dev);
if (ret)
dev_err(dev, "ACP de-init failed\n");
return ret;
}
static int __maybe_unused snd_acp7x_runtime_resume(struct device *dev)
{
struct acp7x_dev_data *adata;
int ret;
adata = dev_get_drvdata(dev);
ret = acp_hw_init(adata, dev);
if (ret) {
dev_err(dev, "ACP init failed\n");
return ret;
}
return 0;
}
static int __maybe_unused snd_acp7x_resume(struct device *dev)
{
struct acp7x_dev_data *adata;
int ret;
adata = dev_get_drvdata(dev);
ret = acp_hw_init(adata, dev);
if (ret)
dev_err(dev, "ACP init failed\n");
return ret;
}
void acp7x_hw_init_ops(struct acp_hw_ops *hw_ops)
{
hw_ops->acp_init = acp7x_init;
hw_ops->acp_deinit = acp7x_deinit;
hw_ops->acp_suspend = snd_acp7x_suspend;
hw_ops->acp_resume = snd_acp7x_resume;
hw_ops->acp_suspend_runtime = snd_acp7x_suspend;
hw_ops->acp_resume_runtime = snd_acp7x_runtime_resume;
}
|
