blob: 7ac745df1412689c6adf0bf246399870b79e44e7 [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>
Lars-Peter Clausen21585ee2013-11-28 08:50:32 +010015#include <sound/dmaengine_pcm.h>
Mark Browna0b03a62013-09-04 20:37:34 +010016
17static 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 */
32int 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}
53EXPORT_SYMBOL_GPL(devm_snd_soc_register_component);
Mark Brown0e4ff5c2013-09-16 18:02:05 +010054
55static 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 */
68int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card)
69{
Shawn Guoebff6542013-12-02 13:26:50 +080070 struct snd_soc_card **ptr;
Mark Brown0e4ff5c2013-09-16 18:02:05 +010071 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) {
Shawn Guoebff6542013-12-02 13:26:50 +080079 *ptr = card;
Mark Brown0e4ff5c2013-09-16 18:02:05 +010080 devres_add(dev, ptr);
81 } else {
82 devres_free(ptr);
83 }
84
85 return ret;
86}
87EXPORT_SYMBOL_GPL(devm_snd_soc_register_card);
Lars-Peter Clausen21585ee2013-11-28 08:50:32 +010088
89#ifdef CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM
90
91static 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 */
105int 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}
125EXPORT_SYMBOL_GPL(devm_snd_dmaengine_pcm_register);
126
127#endif