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