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 16 static void devm_component_release(struct device *dev, void *res) 17 { 18 snd_soc_unregister_component(*(struct device **)res); 19 } 20 21 /** 22 * devm_snd_soc_register_component - resource managed component registration 23 * @dev: Device used to manage component 24 * @cmpnt_drv: Component driver 25 * @dai_drv: DAI driver 26 * @num_dai: Number of DAIs to register 27 * 28 * Register a component with automatic unregistration when the device is 29 * unregistered. 30 */ 31 int devm_snd_soc_register_component(struct device *dev, 32 const struct snd_soc_component_driver *cmpnt_drv, 33 struct snd_soc_dai_driver *dai_drv, int num_dai) 34 { 35 struct device **ptr; 36 int ret; 37 38 ptr = devres_alloc(devm_component_release, sizeof(*ptr), GFP_KERNEL); 39 if (!ptr) 40 return -ENOMEM; 41 42 ret = snd_soc_register_component(dev, cmpnt_drv, dai_drv, num_dai); 43 if (ret == 0) { 44 *ptr = dev; 45 devres_add(dev, ptr); 46 } else { 47 devres_free(ptr); 48 } 49 50 return ret; 51 } 52 EXPORT_SYMBOL_GPL(devm_snd_soc_register_component); 53 54 static void devm_card_release(struct device *dev, void *res) 55 { 56 snd_soc_unregister_card(*(struct snd_soc_card **)res); 57 } 58 59 /** 60 * devm_snd_soc_register_card - resource managed card registration 61 * @dev: Device used to manage card 62 * @card: Card to register 63 * 64 * Register a card with automatic unregistration when the device is 65 * unregistered. 66 */ 67 int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card) 68 { 69 struct snd_soc_card **ptr; 70 int ret; 71 72 ptr = devres_alloc(devm_card_release, sizeof(*ptr), GFP_KERNEL); 73 if (!ptr) 74 return -ENOMEM; 75 76 ret = snd_soc_register_card(card); 77 if (ret == 0) { 78 *ptr = card; 79 devres_add(dev, ptr); 80 } else { 81 devres_free(ptr); 82 } 83 84 return ret; 85 } 86 EXPORT_SYMBOL_GPL(devm_snd_soc_register_card); 87