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>
15#include <sound/dmaengine_pcm.h>
16
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);
54
55static void devm_platform_release(struct device *dev, void *res)
56{
57	snd_soc_unregister_platform(*(struct device **)res);
58}
59
60/**
61 * devm_snd_soc_register_platform - resource managed platform registration
62 * @dev: Device used to manage platform
63 * @platform_drv: platform to register
64 *
65 * Register a platform driver with automatic unregistration when the device is
66 * unregistered.
67 */
68int devm_snd_soc_register_platform(struct device *dev,
69			const struct snd_soc_platform_driver *platform_drv)
70{
71	struct device **ptr;
72	int ret;
73
74	ptr = devres_alloc(devm_platform_release, sizeof(*ptr), GFP_KERNEL);
75	if (!ptr)
76		return -ENOMEM;
77
78	ret = snd_soc_register_platform(dev, platform_drv);
79	if (ret == 0) {
80		*ptr = dev;
81		devres_add(dev, ptr);
82	} else {
83		devres_free(ptr);
84	}
85
86	return ret;
87}
88EXPORT_SYMBOL_GPL(devm_snd_soc_register_platform);
89
90static void devm_card_release(struct device *dev, void *res)
91{
92	snd_soc_unregister_card(*(struct snd_soc_card **)res);
93}
94
95/**
96 * devm_snd_soc_register_card - resource managed card registration
97 * @dev: Device used to manage card
98 * @card: Card to register
99 *
100 * Register a card with automatic unregistration when the device is
101 * unregistered.
102 */
103int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card)
104{
105	struct snd_soc_card **ptr;
106	int ret;
107
108	ptr = devres_alloc(devm_card_release, sizeof(*ptr), GFP_KERNEL);
109	if (!ptr)
110		return -ENOMEM;
111
112	ret = snd_soc_register_card(card);
113	if (ret == 0) {
114		*ptr = card;
115		devres_add(dev, ptr);
116	} else {
117		devres_free(ptr);
118	}
119
120	return ret;
121}
122EXPORT_SYMBOL_GPL(devm_snd_soc_register_card);
123
124#ifdef CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM
125
126static void devm_dmaengine_pcm_release(struct device *dev, void *res)
127{
128	snd_dmaengine_pcm_unregister(*(struct device **)res);
129}
130
131/**
132 * devm_snd_dmaengine_pcm_register - resource managed dmaengine PCM registration
133 * @dev: The parent device for the PCM device
134 * @config: Platform specific PCM configuration
135 * @flags: Platform specific quirks
136 *
137 * Register a dmaengine based PCM device with automatic unregistration when the
138 * device is unregistered.
139 */
140int devm_snd_dmaengine_pcm_register(struct device *dev,
141	const struct snd_dmaengine_pcm_config *config, unsigned int flags)
142{
143	struct device **ptr;
144	int ret;
145
146	ptr = devres_alloc(devm_dmaengine_pcm_release, sizeof(*ptr), GFP_KERNEL);
147	if (!ptr)
148		return -ENOMEM;
149
150	ret = snd_dmaengine_pcm_register(dev, config, flags);
151	if (ret == 0) {
152		*ptr = dev;
153		devres_add(dev, ptr);
154	} else {
155		devres_free(ptr);
156	}
157
158	return ret;
159}
160EXPORT_SYMBOL_GPL(devm_snd_dmaengine_pcm_register);
161
162#endif
163