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
|
// SPDX-License-Identifier: GPL-2.0
//
// Register map access API - AC'97 support
//
// Copyright 2013 Linaro Ltd. All rights reserved.
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/ac97_codec.h>
bool regmap_ac97_default_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case AC97_RESET:
case AC97_POWERDOWN:
case AC97_INT_PAGING:
case AC97_EXTENDED_ID:
case AC97_EXTENDED_STATUS:
case AC97_EXTENDED_MID:
case AC97_EXTENDED_MSTATUS:
case AC97_GPIO_STATUS:
case AC97_MISC_AFE:
case AC97_VENDOR_ID1:
case AC97_VENDOR_ID2:
case AC97_CODEC_CLASS_REV:
case AC97_PCI_SVID:
case AC97_PCI_SID:
case AC97_FUNC_SELECT:
case AC97_FUNC_INFO:
case AC97_SENSE_INFO:
return true;
default:
return false;
}
}
EXPORT_SYMBOL_GPL(regmap_ac97_default_volatile);
static int regmap_ac97_reg_read(void *context, unsigned int reg,
unsigned int *val)
{
struct snd_ac97 *ac97 = context;
*val = ac97->bus->ops->read(ac97, reg);
return 0;
}
static int regmap_ac97_reg_write(void *context, unsigned int reg,
unsigned int val)
{
struct snd_ac97 *ac97 = context;
ac97->bus->ops->write(ac97, reg, val);
return 0;
}
static const struct regmap_bus ac97_regmap_bus = {
.reg_write = regmap_ac97_reg_write,
.reg_read = regmap_ac97_reg_read,
};
struct regmap *__regmap_init_ac97(struct snd_ac97 *ac97,
const struct regmap_config *config,
struct lock_class_key *lock_key,
const char *lock_name)
{
return __regmap_init(&ac97->dev, &ac97_regmap_bus, ac97, config,
lock_key, lock_name);
}
EXPORT_SYMBOL_GPL(__regmap_init_ac97);
struct regmap *__devm_regmap_init_ac97(struct snd_ac97 *ac97,
const struct regmap_config *config,
struct lock_class_key *lock_key,
const char *lock_name)
{
return __devm_regmap_init(&ac97->dev, &ac97_regmap_bus, ac97, config,
lock_key, lock_name);
}
EXPORT_SYMBOL_GPL(__devm_regmap_init_ac97);
MODULE_LICENSE("GPL v2");
|
