Commit | Line | Data |
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abd3147e KM |
1 | /* |
2 | * simple-card-core.c | |
3 | * | |
4 | * Copyright (c) 2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
1f85e118 | 10 | #include <linux/module.h> |
abd3147e KM |
11 | #include <linux/of.h> |
12 | #include <sound/simple_card_utils.h> | |
13 | ||
14 | int asoc_simple_card_parse_daifmt(struct device *dev, | |
15 | struct device_node *node, | |
16 | struct device_node *codec, | |
17 | char *prefix, | |
18 | unsigned int *retfmt) | |
19 | { | |
20 | struct device_node *bitclkmaster = NULL; | |
21 | struct device_node *framemaster = NULL; | |
22 | int prefix_len = prefix ? strlen(prefix) : 0; | |
23 | unsigned int daifmt; | |
24 | ||
25 | daifmt = snd_soc_of_parse_daifmt(node, prefix, | |
26 | &bitclkmaster, &framemaster); | |
27 | daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK; | |
28 | ||
29 | if (prefix_len && !bitclkmaster && !framemaster) { | |
30 | /* | |
31 | * No dai-link level and master setting was not found from | |
32 | * sound node level, revert back to legacy DT parsing and | |
33 | * take the settings from codec node. | |
34 | */ | |
35 | dev_dbg(dev, "Revert to legacy daifmt parsing\n"); | |
36 | ||
37 | daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) | | |
38 | (daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK); | |
39 | } else { | |
40 | if (codec == bitclkmaster) | |
41 | daifmt |= (codec == framemaster) ? | |
42 | SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS; | |
43 | else | |
44 | daifmt |= (codec == framemaster) ? | |
45 | SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS; | |
46 | } | |
47 | ||
48 | of_node_put(bitclkmaster); | |
49 | of_node_put(framemaster); | |
50 | ||
51 | *retfmt = daifmt; | |
52 | ||
53 | return 0; | |
54 | } | |
55 | EXPORT_SYMBOL_GPL(asoc_simple_card_parse_daifmt); | |
1db3312e KM |
56 | |
57 | int asoc_simple_card_set_dailink_name(struct device *dev, | |
58 | struct snd_soc_dai_link *dai_link, | |
59 | const char *fmt, ...) | |
60 | { | |
61 | va_list ap; | |
62 | char *name = NULL; | |
63 | int ret = -ENOMEM; | |
64 | ||
65 | va_start(ap, fmt); | |
66 | name = devm_kvasprintf(dev, GFP_KERNEL, fmt, ap); | |
67 | va_end(ap); | |
68 | ||
69 | if (name) { | |
70 | ret = 0; | |
71 | ||
72 | dai_link->name = name; | |
73 | dai_link->stream_name = name; | |
74 | } | |
75 | ||
76 | return ret; | |
77 | } | |
78 | EXPORT_SYMBOL_GPL(asoc_simple_card_set_dailink_name); | |
fc55c9b5 KM |
79 | |
80 | int asoc_simple_card_parse_card_name(struct snd_soc_card *card, | |
81 | char *prefix) | |
82 | { | |
83 | char prop[128]; | |
84 | int ret; | |
85 | ||
86 | snprintf(prop, sizeof(prop), "%sname", prefix); | |
87 | ||
88 | /* Parse the card name from DT */ | |
89 | ret = snd_soc_of_parse_card_name(card, prop); | |
90 | if (ret < 0) | |
91 | return ret; | |
92 | ||
93 | if (!card->name && card->dai_link) | |
94 | card->name = card->dai_link->name; | |
95 | ||
96 | return 0; | |
97 | } | |
98 | EXPORT_SYMBOL_GPL(asoc_simple_card_parse_card_name); | |
1f85e118 KM |
99 | |
100 | /* Module information */ | |
101 | MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); | |
102 | MODULE_DESCRIPTION("ALSA SoC Simple Card Utils"); | |
103 | MODULE_LICENSE("GPL v2"); |