/* * soc-devres.c -- ALSA SoC Audio Layer devres functions * * Copyright (C) 2013 Linaro Ltd * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ #include <linux/module.h> #include <linux/moduleparam.h> #include <sound/soc.h> #include <sound/dmaengine_pcm.h> static void devm_component_release(struct device *dev, void *res) { snd_soc_unregister_component(*(struct device **)res); } /** * devm_snd_soc_register_component - resource managed component registration * @dev: Device used to manage component * @cmpnt_drv: Component driver * @dai_drv: DAI driver * @num_dai: Number of DAIs to register * * Register a component with automatic unregistration when the device is * unregistered. */ int 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) { struct device **ptr; int ret; ptr = devres_alloc(devm_component_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return -ENOMEM; ret = snd_soc_register_component(dev, cmpnt_drv, dai_drv, num_dai); if (ret == 0) { *ptr = dev; devres_add(dev, ptr); } else { devres_free(ptr); } return ret; } EXPORT_SYMBOL_GPL(devm_snd_soc_register_component); static void devm_platform_release(struct device *dev, void *res) { snd_soc_unregister_platform(*(struct device **)res); } /** * devm_snd_soc_register_platform - resource managed platform registration * @dev: Device used to manage platform * @platform: platform to register * * Register a platform driver with automatic unregistration when the device is * unregistered. */ int devm_snd_soc_register_platform(struct device *dev, const struct snd_soc_platform_driver *platform_drv) { struct device **ptr; int ret; ptr = devres_alloc(devm_platform_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return -ENOMEM; ret = snd_soc_register_platform(dev, platform_drv); if (ret == 0) { *ptr = dev; devres_add(dev, ptr); } else { devres_free(ptr); } return ret; } EXPORT_SYMBOL_GPL(devm_snd_soc_register_platform); static void devm_card_release(struct device *dev, void *res) { snd_soc_unregister_card(*(struct snd_soc_card **)res); } /** * devm_snd_soc_register_card - resource managed card registration * @dev: Device used to manage card * @card: Card to register * * Register a card with automatic unregistration when the device is * unregistered. */ int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card) { struct snd_soc_card **ptr; int ret; ptr = devres_alloc(devm_card_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return -ENOMEM; ret = snd_soc_register_card(card); if (ret == 0) { *ptr = card; devres_add(dev, ptr); } else { devres_free(ptr); } return ret; } EXPORT_SYMBOL_GPL(devm_snd_soc_register_card); #ifdef CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM static void devm_dmaengine_pcm_release(struct device *dev, void *res) { snd_dmaengine_pcm_unregister(*(struct device **)res); } /** * devm_snd_dmaengine_pcm_register - resource managed dmaengine PCM registration * @dev: The parent device for the PCM device * @config: Platform specific PCM configuration * @flags: Platform specific quirks * * Register a dmaengine based PCM device with automatic unregistration when the * device is unregistered. */ int devm_snd_dmaengine_pcm_register(struct device *dev, const struct snd_dmaengine_pcm_config *config, unsigned int flags) { struct device **ptr; int ret; ptr = devres_alloc(devm_dmaengine_pcm_release, sizeof(*ptr), GFP_KERNEL); if (!ptr) return -ENOMEM; ret = snd_dmaengine_pcm_register(dev, config, flags); if (ret == 0) { *ptr = dev; devres_add(dev, ptr); } else { devres_free(ptr); } return ret; } EXPORT_SYMBOL_GPL(devm_snd_dmaengine_pcm_register); #endif