From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lars-Peter Clausen Subject: [PATCH 05/11] ASoC: Add helper functions to cast from DAPM context to CODEC/platform Date: Sun, 18 May 2014 14:24:12 +0200 Message-ID: <1400415858-11025-6-git-send-email-lars@metafoo.de> References: <1400415858-11025-1-git-send-email-lars@metafoo.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp-out-145.synserver.de (smtp-out-151.synserver.de [212.40.185.151]) by alsa0.perex.cz (Postfix) with ESMTP id A8D85264F03 for ; Sun, 18 May 2014 14:24:28 +0200 (CEST) In-Reply-To: <1400415858-11025-1-git-send-email-lars@metafoo.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org To: Mark Brown , Liam Girdwood Cc: alsa-devel@alsa-project.org, Lars-Peter Clausen List-Id: alsa-devel@alsa-project.org This is useful if we have a pointer to a DAPM context and know that it is a CODEC or platform DAPM context and want to get a pointer to the CODEC or platform. Signed-off-by: Lars-Peter Clausen --- include/sound/soc.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/include/sound/soc.h b/include/sound/soc.h index 9b335d8..aa9acaf 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1142,6 +1142,33 @@ static inline struct snd_soc_platform *snd_soc_component_to_platform( return container_of(component, struct snd_soc_platform, component); } +/** + * snd_soc_dapm_to_codec() - Casts a DAPM context to the CODEC it is embedded in + * @dapm: The DAPM context to cast to the CODEC + * + * This function must only be used on DAPM contexts that are known to be part of + * a CODEC (e.g. in a CODEC driver). Otherwise the behavior is undefined. + */ +static inline struct snd_soc_codec *snd_soc_dapm_to_codec( + struct snd_soc_dapm_context *dapm) +{ + return container_of(dapm, struct snd_soc_codec, dapm); +} + +/** + * snd_soc_dapm_to_platform() - Casts a DAPM context to the platform it is + * embedded in + * @dapm: The DAPM context to cast to the platform. + * + * This function must only be used on DAPM contexts that are known to be part of + * a platform (e.g. in a platform driver). Otherwise the behavior is undefined. + */ +static inline struct snd_soc_platform *snd_soc_dapm_to_platform( + struct snd_soc_dapm_context *dapm) +{ + return container_of(dapm, struct snd_soc_platform, dapm); +} + /* codec IO */ unsigned int snd_soc_read(struct snd_soc_codec *codec, unsigned int reg); int snd_soc_write(struct snd_soc_codec *codec, unsigned int reg, -- 1.8.0