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
devm_component_release(struct device * dev,void * res)12 static void devm_component_release(struct device *dev, void *res)
13 {
14 const struct snd_soc_component_driver **cmpnt_drv = res;
15
16 snd_soc_unregister_component_by_driver(dev, *cmpnt_drv);
17 }
18
19 /**
20 * devm_snd_soc_register_component - resource managed component registration
21 * @dev: Device used to manage component
22 * @cmpnt_drv: Component driver
23 * @dai_drv: DAI driver
24 * @num_dai: Number of DAIs to register
25 *
26 * Register a component with automatic unregistration when the device is
27 * unregistered.
28 */
devm_snd_soc_register_component(struct device * dev,const struct snd_soc_component_driver * cmpnt_drv,struct snd_soc_dai_driver * dai_drv,int num_dai)29 int devm_snd_soc_register_component(struct device *dev,
30 const struct snd_soc_component_driver *cmpnt_drv,
31 struct snd_soc_dai_driver *dai_drv, int num_dai)
32 {
33 const struct snd_soc_component_driver **ptr;
34 int ret;
35
36 ptr = devres_alloc(devm_component_release, sizeof(*ptr), GFP_KERNEL);
37 if (!ptr)
38 return -ENOMEM;
39
40 ret = snd_soc_register_component(dev, cmpnt_drv, dai_drv, num_dai);
41 if (ret == 0) {
42 *ptr = cmpnt_drv;
43 devres_add(dev, ptr);
44 } else {
45 devres_free(ptr);
46 }
47
48 return ret;
49 }
50 EXPORT_SYMBOL_GPL(devm_snd_soc_register_component);
51
devm_card_release(struct device * dev,void * res)52 static void devm_card_release(struct device *dev, void *res)
53 {
54 snd_soc_unregister_card(*(struct snd_soc_card **)res);
55 }
56
57 /**
58 * devm_snd_soc_register_card - resource managed card registration
59 * @dev: Device used to manage card
60 * @card: Card to register
61 *
62 * Register a card with automatic unregistration when the device is
63 * unregistered.
64 */
devm_snd_soc_register_card(struct device * dev,struct snd_soc_card * card)65 int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card)
66 {
67 struct snd_soc_card **ptr;
68 int ret;
69
70 ptr = devres_alloc(devm_card_release, sizeof(*ptr), GFP_KERNEL);
71 if (!ptr)
72 return -ENOMEM;
73
74 ret = snd_soc_register_card(card);
75 if (ret == 0) {
76 *ptr = card;
77 devres_add(dev, ptr);
78 } else {
79 devres_free(ptr);
80 }
81
82 return ret;
83 }
84 EXPORT_SYMBOL_GPL(devm_snd_soc_register_card);
85
devm_snd_soc_register_deferrable_card(struct device * dev,struct snd_soc_card * card)86 int devm_snd_soc_register_deferrable_card(struct device *dev, struct snd_soc_card *card)
87 {
88 card->devres_dev = dev;
89 return snd_soc_register_card(card);
90 }
91 EXPORT_SYMBOL_GPL(devm_snd_soc_register_deferrable_card);
92
93 #ifdef CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM
94
devm_dmaengine_pcm_release(struct device * dev,void * res)95 static void devm_dmaengine_pcm_release(struct device *dev, void *res)
96 {
97 snd_dmaengine_pcm_unregister(*(struct device **)res);
98 }
99
100 /**
101 * devm_snd_dmaengine_pcm_register - resource managed dmaengine PCM registration
102 * @dev: The parent device for the PCM device
103 * @config: Platform specific PCM configuration
104 * @flags: Platform specific quirks
105 *
106 * Register a dmaengine based PCM device with automatic unregistration when the
107 * device is unregistered.
108 */
devm_snd_dmaengine_pcm_register(struct device * dev,const struct snd_dmaengine_pcm_config * config,unsigned int flags)109 int devm_snd_dmaengine_pcm_register(struct device *dev,
110 const struct snd_dmaengine_pcm_config *config, unsigned int flags)
111 {
112 struct device **ptr;
113 int ret;
114
115 ptr = devres_alloc(devm_dmaengine_pcm_release, sizeof(*ptr), GFP_KERNEL);
116 if (!ptr)
117 return -ENOMEM;
118
119 ret = snd_dmaengine_pcm_register(dev, config, flags);
120 if (ret == 0) {
121 *ptr = dev;
122 devres_add(dev, ptr);
123 } else {
124 devres_free(ptr);
125 }
126
127 return ret;
128 }
129 EXPORT_SYMBOL_GPL(devm_snd_dmaengine_pcm_register);
130
131 #endif
132