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
|
/*
* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/regmap.h>
#include <linux/soundwire/soundwire.h>
#include <linux/module.h>
#include <linux/init.h>
#include "internal.h"
static int regmap_swr_gather_write(void *context,
const void *reg, size_t reg_size,
const void *val, size_t val_size)
{
struct device *dev = context;
struct swr_device *swr = to_swr_device(dev);
struct regmap *map = dev_get_regmap(dev, NULL);
size_t addr_bytes = map->format.reg_bytes;
int ret = 0;
int i;
u32 reg_addr = 0;
if (swr == NULL) {
dev_err(dev, "%s: swr device is NULL\n", __func__);
return -EINVAL;
}
if (reg_size != addr_bytes) {
dev_err(dev, "%s: reg size %zd bytes not supported\n",
__func__, reg_size);
return -EINVAL;
}
reg_addr = *(u16 *)reg;
for (i = 0; i < val_size; i++) {
ret = swr_write(swr, swr->dev_num, (reg_addr+i),
(u32 *)(val+i));
if (ret < 0) {
dev_err(dev, "%s: write reg 0x%x failed, err %d\n",
__func__, (reg_addr+i), ret);
break;
}
}
return ret;
}
static int regmap_swr_write(void *context, const void *data, size_t count)
{
struct device *dev = context;
struct regmap *map = dev_get_regmap(dev, NULL);
size_t addr_bytes = map->format.reg_bytes;
WARN_ON(count < addr_bytes);
return regmap_swr_gather_write(context, data, addr_bytes,
(data + addr_bytes),
(count - addr_bytes));
}
static int regmap_swr_read(void *context,
const void *reg, size_t reg_size,
void *val, size_t val_size)
{
struct device *dev = context;
struct swr_device *swr = to_swr_device(dev);
struct regmap *map = dev_get_regmap(dev, NULL);
size_t addr_bytes = map->format.reg_bytes;
int ret = 0;
u32 reg_addr = 0;
if (swr == NULL) {
dev_err(dev, "%s: swr is NULL\n", __func__);
return -EINVAL;
}
if (reg_size != addr_bytes) {
dev_err(dev, "%s: register size %zd bytes not supported\n",
__func__, reg_size);
return -EINVAL;
}
reg_addr = *(u32 *)reg;
ret = swr_read(swr, swr->dev_num, reg_addr, val, val_size);
if (ret < 0)
dev_err(dev, "%s: codec reg 0x%x read failed %d\n",
__func__, reg_addr, ret);
return ret;
}
static struct regmap_bus regmap_swr = {
.write = regmap_swr_write,
.gather_write = regmap_swr_gather_write,
.read = regmap_swr_read,
.reg_format_endian_default = REGMAP_ENDIAN_NATIVE,
.val_format_endian_default = REGMAP_ENDIAN_NATIVE,
};
struct regmap *__regmap_init_swr(struct swr_device *swr,
const struct regmap_config *config,
struct lock_class_key *lock_key,
const char *lock_name)
{
return __regmap_init(&swr->dev, ®map_swr, &swr->dev, config,
lock_key, lock_name);
}
EXPORT_SYMBOL(__regmap_init_swr);
struct regmap *__devm_regmap_init_swr(struct swr_device *swr,
const struct regmap_config *config,
struct lock_class_key *lock_key,
const char *lock_name)
{
return __devm_regmap_init(&swr->dev, ®map_swr, &swr->dev, config,
lock_key, lock_name);
}
EXPORT_SYMBOL(__devm_regmap_init_swr);
MODULE_LICENSE("GPL v2");
|
