mirror of https://gitee.com/openkylin/linux.git
160 lines
3.9 KiB
C
160 lines
3.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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//
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// soc-devres.c -- ALSA SoC Audio Layer devres functions
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//
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// Copyright (C) 2013 Linaro Ltd
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <sound/soc.h>
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#include <sound/dmaengine_pcm.h>
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static void devm_dai_release(struct device *dev, void *res)
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{
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snd_soc_unregister_dai(*(struct snd_soc_dai **)res);
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}
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/**
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* devm_snd_soc_register_dai - resource-managed dai registration
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* @dev: Device used to manage component
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* @component: The component the DAIs are registered for
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* @dai_drv: DAI driver to use for the DAI
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* @legacy_dai_naming: if %true, use legacy single-name format;
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* if %false, use multiple-name format;
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*/
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struct snd_soc_dai *devm_snd_soc_register_dai(struct device *dev,
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struct snd_soc_component *component,
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struct snd_soc_dai_driver *dai_drv,
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bool legacy_dai_naming)
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{
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struct snd_soc_dai **ptr;
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struct snd_soc_dai *dai;
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ptr = devres_alloc(devm_dai_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return NULL;
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dai = snd_soc_register_dai(component, dai_drv, legacy_dai_naming);
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if (dai) {
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*ptr = dai;
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devres_add(dev, ptr);
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} else {
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devres_free(ptr);
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}
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return dai;
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}
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EXPORT_SYMBOL_GPL(devm_snd_soc_register_dai);
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static void devm_component_release(struct device *dev, void *res)
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{
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snd_soc_unregister_component(*(struct device **)res);
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}
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/**
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* devm_snd_soc_register_component - resource managed component registration
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* @dev: Device used to manage component
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* @cmpnt_drv: Component driver
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* @dai_drv: DAI driver
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* @num_dai: Number of DAIs to register
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*
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* Register a component with automatic unregistration when the device is
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* unregistered.
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*/
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int devm_snd_soc_register_component(struct device *dev,
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const struct snd_soc_component_driver *cmpnt_drv,
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struct snd_soc_dai_driver *dai_drv, int num_dai)
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{
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struct device **ptr;
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int ret;
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ptr = devres_alloc(devm_component_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return -ENOMEM;
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ret = snd_soc_register_component(dev, cmpnt_drv, dai_drv, num_dai);
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if (ret == 0) {
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*ptr = dev;
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devres_add(dev, ptr);
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} else {
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devres_free(ptr);
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(devm_snd_soc_register_component);
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static void devm_card_release(struct device *dev, void *res)
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{
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snd_soc_unregister_card(*(struct snd_soc_card **)res);
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}
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/**
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* devm_snd_soc_register_card - resource managed card registration
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* @dev: Device used to manage card
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* @card: Card to register
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*
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* Register a card with automatic unregistration when the device is
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* unregistered.
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*/
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int devm_snd_soc_register_card(struct device *dev, struct snd_soc_card *card)
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{
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struct snd_soc_card **ptr;
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int ret;
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ptr = devres_alloc(devm_card_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return -ENOMEM;
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ret = snd_soc_register_card(card);
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if (ret == 0) {
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*ptr = card;
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devres_add(dev, ptr);
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} else {
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devres_free(ptr);
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(devm_snd_soc_register_card);
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#ifdef CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM
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static void devm_dmaengine_pcm_release(struct device *dev, void *res)
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{
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snd_dmaengine_pcm_unregister(*(struct device **)res);
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}
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/**
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* devm_snd_dmaengine_pcm_register - resource managed dmaengine PCM registration
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* @dev: The parent device for the PCM device
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* @config: Platform specific PCM configuration
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* @flags: Platform specific quirks
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*
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* Register a dmaengine based PCM device with automatic unregistration when the
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* device is unregistered.
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*/
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int devm_snd_dmaengine_pcm_register(struct device *dev,
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const struct snd_dmaengine_pcm_config *config, unsigned int flags)
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{
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struct device **ptr;
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int ret;
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ptr = devres_alloc(devm_dmaengine_pcm_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return -ENOMEM;
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ret = snd_dmaengine_pcm_register(dev, config, flags);
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if (ret == 0) {
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*ptr = dev;
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devres_add(dev, ptr);
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} else {
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devres_free(ptr);
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}
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return ret;
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}
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EXPORT_SYMBOL_GPL(devm_snd_dmaengine_pcm_register);
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#endif
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