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Cezary RojewskiandMark Brown
42d99857d6
Commit a3375522bb ("ASoC: core: Complete support for card rebinding")
completed the feature and at the same time divided ASoC users into two
groups:
1) cards that fail to enumerate the moment one of the components is
not available
2) cards that succeed to enumerate even if some of their components
become available late
Given the component-based nature of ASoC, approach 2) is preferred and
can be used by all ASoC users. By dropping 1) the card binding code can
also be simplified.
Flatten code that is currently conditional based on ->devres_dev and
convert snd_soc_rebind_card() to call_soc_bind_card(). The latter is a
selector between managed and unmanaged card-binding behaviour to keep
non-devm users happy.
With rebinding being the default, devm_snd_soc_register_card() takes
form of its deferrable friend - all the devm job is already done by
devm_snd_soc_bind_card().
Suggested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://patch.msgid.link/20260430140752.766130-1-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
106 lines
2.6 KiB
C
106 lines
2.6 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_component_release(struct device *dev, void *res)
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{
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const struct snd_soc_component_driver **cmpnt_drv = res;
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snd_soc_unregister_component_by_driver(dev, *cmpnt_drv);
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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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const struct snd_soc_component_driver **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 = cmpnt_drv;
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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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/**
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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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card->devres_dev = dev;
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return snd_soc_register_card(card);
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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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