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1 | /* |
2 | * soc-devres.c -- ALSA SoC Audio Layer devres functions | |
3 | * | |
4 | * Copyright (C) 2013 Linaro Ltd | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2 of the License, or (at your | |
9 | * option) any later version. | |
10 | */ | |
11 | ||
12 | #include <linux/module.h> | |
13 | #include <linux/moduleparam.h> | |
14 | #include <sound/soc.h> | |
21585ee8 | 15 | #include <sound/dmaengine_pcm.h> |
a0b03a61 MB |
16 | |
17 | static void devm_component_release(struct device *dev, void *res) | |
18 | { | |
19 | snd_soc_unregister_component(*(struct device **)res); | |
20 | } | |
21 | ||
22 | /** | |
23 | * devm_snd_soc_register_component - resource managed component registration | |
24 | * @dev: Device used to manage component | |
25 | * @cmpnt_drv: Component driver | |
26 | * @dai_drv: DAI driver | |
27 | * @num_dai: Number of DAIs to register | |
28 | * | |
29 | * Register a component with automatic unregistration when the device is | |
30 | * unregistered. | |
31 | */ | |
32 | int devm_snd_soc_register_component(struct device *dev, | |
33 | const struct snd_soc_component_driver *cmpnt_drv, | |
34 | struct snd_soc_dai_driver *dai_drv, int num_dai) | |
35 | { | |
36 | struct device **ptr; | |
37 | int ret; | |
38 | ||
39 | ptr = devres_alloc(devm_component_release, sizeof(*ptr), GFP_KERNEL); | |
40 | if (!ptr) | |
41 | return -ENOMEM; | |
42 | ||
43 | ret = snd_soc_register_component(dev, cmpnt_drv, dai_drv, num_dai); | |
44 | if (ret == 0) { | |
45 | *ptr = dev; | |
46 | devres_add(dev, ptr); | |
47 | } else { | |
48 | devres_free(ptr); | |
49 | } | |
50 | ||
51 | return ret; | |
52 | } | |
53 | EXPORT_SYMBOL_GPL(devm_snd_soc_register_component); | |
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54 | |
55 | static void devm_card_release(struct device *dev, void *res) | |
56 | { | |
57 | snd_soc_unregister_card(*(struct snd_soc_card **)res); | |
58 | } | |
59 | ||
60 | /** | |
61 | * devm_snd_soc_register_card - resource managed card registration | |
62 | * @dev: Device used to manage card | |
63 | * @card: Card to register | |
64 | * | |
65 | * Register a card with automatic unregistration when the device is | |
66 | * unregistered. | |
67 | */ | |
68 | int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card) | |
69 | { | |
ebff6547 | 70 | struct snd_soc_card **ptr; |
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71 | int ret; |
72 | ||
73 | ptr = devres_alloc(devm_card_release, sizeof(*ptr), GFP_KERNEL); | |
74 | if (!ptr) | |
75 | return -ENOMEM; | |
76 | ||
77 | ret = snd_soc_register_card(card); | |
78 | if (ret == 0) { | |
ebff6547 | 79 | *ptr = card; |
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80 | devres_add(dev, ptr); |
81 | } else { | |
82 | devres_free(ptr); | |
83 | } | |
84 | ||
85 | return ret; | |
86 | } | |
87 | EXPORT_SYMBOL_GPL(devm_snd_soc_register_card); | |
21585ee8 LPC |
88 | |
89 | #ifdef CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM | |
90 | ||
91 | static void devm_dmaengine_pcm_release(struct device *dev, void *res) | |
92 | { | |
93 | snd_dmaengine_pcm_unregister(*(struct device **)res); | |
94 | } | |
95 | ||
96 | /** | |
97 | * devm_snd_dmaengine_pcm_register - resource managed dmaengine PCM registration | |
98 | * @dev: The parent device for the PCM device | |
99 | * @config: Platform specific PCM configuration | |
100 | * @flags: Platform specific quirks | |
101 | * | |
102 | * Register a dmaengine based PCM device with automatic unregistration when the | |
103 | * device is unregistered. | |
104 | */ | |
105 | int devm_snd_dmaengine_pcm_register(struct device *dev, | |
106 | const struct snd_dmaengine_pcm_config *config, unsigned int flags) | |
107 | { | |
108 | struct device **ptr; | |
109 | int ret; | |
110 | ||
111 | ptr = devres_alloc(devm_dmaengine_pcm_release, sizeof(*ptr), GFP_KERNEL); | |
112 | if (!ptr) | |
113 | return -ENOMEM; | |
114 | ||
115 | ret = snd_dmaengine_pcm_register(dev, config, flags); | |
116 | if (ret == 0) { | |
117 | *ptr = dev; | |
118 | devres_add(dev, ptr); | |
119 | } else { | |
120 | devres_free(ptr); | |
121 | } | |
122 | ||
123 | return ret; | |
124 | } | |
125 | EXPORT_SYMBOL_GPL(devm_snd_dmaengine_pcm_register); | |
126 | ||
127 | #endif |