blob: b1d732255c0275fd06039efe36988b1a8ba3e8d2 [file] [log] [blame]
Mark Browna0b03a62013-09-04 20:37:34 +01001/*
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>
15
16static void devm_component_release(struct device *dev, void *res)
17{
18 snd_soc_unregister_component(*(struct device **)res);
19}
20
21/**
22 * devm_snd_soc_register_component - resource managed component registration
23 * @dev: Device used to manage component
24 * @cmpnt_drv: Component driver
25 * @dai_drv: DAI driver
26 * @num_dai: Number of DAIs to register
27 *
28 * Register a component with automatic unregistration when the device is
29 * unregistered.
30 */
31int devm_snd_soc_register_component(struct device *dev,
32 const struct snd_soc_component_driver *cmpnt_drv,
33 struct snd_soc_dai_driver *dai_drv, int num_dai)
34{
35 struct device **ptr;
36 int ret;
37
38 ptr = devres_alloc(devm_component_release, sizeof(*ptr), GFP_KERNEL);
39 if (!ptr)
40 return -ENOMEM;
41
42 ret = snd_soc_register_component(dev, cmpnt_drv, dai_drv, num_dai);
43 if (ret == 0) {
44 *ptr = dev;
45 devres_add(dev, ptr);
46 } else {
47 devres_free(ptr);
48 }
49
50 return ret;
51}
52EXPORT_SYMBOL_GPL(devm_snd_soc_register_component);
Mark Brown0e4ff5c2013-09-16 18:02:05 +010053
54static void devm_card_release(struct device *dev, void *res)
55{
56 snd_soc_unregister_card(*(struct snd_soc_card **)res);
57}
58
59/**
60 * devm_snd_soc_register_card - resource managed card registration
61 * @dev: Device used to manage card
62 * @card: Card to register
63 *
64 * Register a card with automatic unregistration when the device is
65 * unregistered.
66 */
67int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card)
68{
69 struct device **ptr;
70 int ret;
71
72 ptr = devres_alloc(devm_card_release, sizeof(*ptr), GFP_KERNEL);
73 if (!ptr)
74 return -ENOMEM;
75
76 ret = snd_soc_register_card(card);
77 if (ret == 0) {
78 *ptr = dev;
79 devres_add(dev, ptr);
80 } else {
81 devres_free(ptr);
82 }
83
84 return ret;
85}
86EXPORT_SYMBOL_GPL(devm_snd_soc_register_card);