/* * soc-cache.c -- ASoC register cache helpers * * Copyright 2009 Wolfson Microelectronics PLC. * * Author: Mark Brown * * 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 #include #include int snd_soc_cache_init(struct snd_soc_codec *codec) { const struct snd_soc_codec_driver *codec_drv = codec->driver; size_t reg_size; reg_size = codec_drv->reg_cache_size * codec_drv->reg_word_size; if (!reg_size) return 0; dev_dbg(codec->dev, "ASoC: Initializing cache for %s codec\n", codec->component.name); if (codec_drv->reg_cache_default) codec->reg_cache = kmemdup(codec_drv->reg_cache_default, reg_size, GFP_KERNEL); else codec->reg_cache = kzalloc(reg_size, GFP_KERNEL); if (!codec->reg_cache) return -ENOMEM; return 0; } /* * NOTE: keep in mind that this function might be called * multiple times. */ int snd_soc_cache_exit(struct snd_soc_codec *codec) { dev_dbg(codec->dev, "ASoC: Destroying cache for %s codec\n", codec->component.name); kfree(codec->reg_cache); codec->reg_cache = NULL; return 0; } ingsTobias Klauser

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