1// SPDX-License-Identifier: GPL-2.0+
2//
3// soc-devres.c  --  ALSA SoC Audio Layer devres functions
4//
5// Copyright (C) 2013 Linaro Ltd
6
7#include <linux/module.h>
8#include <linux/moduleparam.h>
9#include <sound/soc.h>
10#include <sound/dmaengine_pcm.h>
11
12static void devm_dai_release(struct device *dev, void *res)
13{
14	snd_soc_unregister_dai(*(struct snd_soc_dai **)res);
15}
16
17/**
18 * devm_snd_soc_register_dai - resource-managed dai registration
19 * @dev: Device used to manage component
20 * @component: The component the DAIs are registered for
21 * @dai_drv: DAI driver to use for the DAI
22 * @legacy_dai_naming: if %true, use legacy single-name format;
23 *	if %false, use multiple-name format;
24 */
25struct snd_soc_dai *devm_snd_soc_register_dai(struct device *dev,
26					      struct snd_soc_component *component,
27					      struct snd_soc_dai_driver *dai_drv,
28					      bool legacy_dai_naming)
29{
30	struct snd_soc_dai **ptr;
31	struct snd_soc_dai *dai;
32
33	ptr = devres_alloc(devm_dai_release, sizeof(*ptr), GFP_KERNEL);
34	if (!ptr)
35		return NULL;
36
37	dai = snd_soc_register_dai(component, dai_drv, legacy_dai_naming);
38	if (dai) {
39		*ptr = dai;
40		devres_add(dev, ptr);
41	} else {
42		devres_free(ptr);
43	}
44
45	return dai;
46}
47EXPORT_SYMBOL_GPL(devm_snd_soc_register_dai);
48
49static void devm_component_release(struct device *dev, void *res)
50{
51	const struct snd_soc_component_driver **cmpnt_drv = res;
52
53	snd_soc_unregister_component_by_driver(dev, *cmpnt_drv);
54}
55
56/**
57 * devm_snd_soc_register_component - resource managed component registration
58 * @dev: Device used to manage component
59 * @cmpnt_drv: Component driver
60 * @dai_drv: DAI driver
61 * @num_dai: Number of DAIs to register
62 *
63 * Register a component with automatic unregistration when the device is
64 * unregistered.
65 */
66int devm_snd_soc_register_component(struct device *dev,
67			 const struct snd_soc_component_driver *cmpnt_drv,
68			 struct snd_soc_dai_driver *dai_drv, int num_dai)
69{
70	const struct snd_soc_component_driver **ptr;
71	int ret;
72
73	ptr = devres_alloc(devm_component_release, sizeof(*ptr), GFP_KERNEL);
74	if (!ptr)
75		return -ENOMEM;
76
77	ret = snd_soc_register_component(dev, cmpnt_drv, dai_drv, num_dai);
78	if (ret == 0) {
79		*ptr = cmpnt_drv;
80		devres_add(dev, ptr);
81	} else {
82		devres_free(ptr);
83	}
84
85	return ret;
86}
87EXPORT_SYMBOL_GPL(devm_snd_soc_register_component);
88
89static void devm_card_release(struct device *dev, void *res)
90{
91	snd_soc_unregister_card(*(struct snd_soc_card **)res);
92}
93
94/**
95 * devm_snd_soc_register_card - resource managed card registration
96 * @dev: Device used to manage card
97 * @card: Card to register
98 *
99 * Register a card with automatic unregistration when the device is
100 * unregistered.
101 */
102int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card)
103{
104	struct snd_soc_card **ptr;
105	int ret;
106
107	ptr = devres_alloc(devm_card_release, sizeof(*ptr), GFP_KERNEL);
108	if (!ptr)
109		return -ENOMEM;
110
111	ret = snd_soc_register_card(card);
112	if (ret == 0) {
113		*ptr = card;
114		devres_add(dev, ptr);
115	} else {
116		devres_free(ptr);
117	}
118
119	return ret;
120}
121EXPORT_SYMBOL_GPL(devm_snd_soc_register_card);
122
123#ifdef CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM
124
125static void devm_dmaengine_pcm_release(struct device *dev, void *res)
126{
127	snd_dmaengine_pcm_unregister(*(struct device **)res);
128}
129
130/**
131 * devm_snd_dmaengine_pcm_register - resource managed dmaengine PCM registration
132 * @dev: The parent device for the PCM device
133 * @config: Platform specific PCM configuration
134 * @flags: Platform specific quirks
135 *
136 * Register a dmaengine based PCM device with automatic unregistration when the
137 * device is unregistered.
138 */
139int devm_snd_dmaengine_pcm_register(struct device *dev,
140	const struct snd_dmaengine_pcm_config *config, unsigned int flags)
141{
142	struct device **ptr;
143	int ret;
144
145	ptr = devres_alloc(devm_dmaengine_pcm_release, sizeof(*ptr), GFP_KERNEL);
146	if (!ptr)
147		return -ENOMEM;
148
149	ret = snd_dmaengine_pcm_register(dev, config, flags);
150	if (ret == 0) {
151		*ptr = dev;
152		devres_add(dev, ptr);
153	} else {
154		devres_free(ptr);
155	}
156
157	return ret;
158}
159EXPORT_SYMBOL_GPL(devm_snd_dmaengine_pcm_register);
160
161#endif
162