blob: 3f6b72526f71926ed1fcd1509ea64e621b47f0ab (
plain)
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
|
/*
* simple-card-core.c
*
* Copyright (c) 2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/of.h>
#include <sound/simple_card_utils.h>
int asoc_simple_card_parse_daifmt(struct device *dev,
struct device_node *node,
struct device_node *codec,
char *prefix,
unsigned int *retfmt)
{
struct device_node *bitclkmaster = NULL;
struct device_node *framemaster = NULL;
int prefix_len = prefix ? strlen(prefix) : 0;
unsigned int daifmt;
daifmt = snd_soc_of_parse_daifmt(node, prefix,
&bitclkmaster, &framemaster);
daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
if (prefix_len && !bitclkmaster && !framemaster) {
/*
* No dai-link level and master setting was not found from
* sound node level, revert back to legacy DT parsing and
* take the settings from codec node.
*/
dev_dbg(dev, "Revert to legacy daifmt parsing\n");
daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
(daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
} else {
if (codec == bitclkmaster)
daifmt |= (codec == framemaster) ?
SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
else
daifmt |= (codec == framemaster) ?
SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
}
of_node_put(bitclkmaster);
of_node_put(framemaster);
*retfmt = daifmt;
return 0;
}
EXPORT_SYMBOL_GPL(asoc_simple_card_parse_daifmt);
|
