From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rohit kumar Subject: [PATCH 1/2] ASoC: soc-core: add snd_soc_of_lookup_component() Date: Mon, 24 Dec 2018 14:32:12 +0530 Message-ID: <1545642133-16120-2-git-send-email-rohitkr@codeaurora.org> References: <1545642133-16120-1-git-send-email-rohitkr@codeaurora.org> Return-path: In-Reply-To: <1545642133-16120-1-git-send-email-rohitkr@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org To: plai@codeaurora.org, bgoswami@codeaurora.org, asishb@codeaurora.org, lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, rohkumar@qti.qualcomm.com, srinivas.kandagatla@linaro.org Cc: Ajit Pandey , Rohit kumar List-Id: alsa-devel@alsa-project.org From: Ajit Pandey Soundcard should be registered after all components are registered. Add snd_soc_of_lookup_component() to get component info from device_node. This can be used by machine driver to make sure that card components are registered before calling snd_soc_register_card(). Signed-off-by: Ajit Pandey Signed-off-by: Rohit kumar --- include/sound/soc.h | 1 + sound/soc/soc-core.c | 28 ++++++++++++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/include/sound/soc.h b/include/sound/soc.h index 8ec1de8..dc251fc 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1502,6 +1502,7 @@ int snd_soc_get_dai_name(struct of_phandle_args *args, const char **dai_name); int snd_soc_of_get_dai_name(struct device_node *of_node, const char **dai_name); +struct snd_soc_component *snd_soc_of_lookup_component(struct device_node *np); int snd_soc_of_get_dai_link_codecs(struct device *dev, struct device_node *of_node, struct snd_soc_dai_link *dai_link); diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 0462b3e..ab27bc5 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3797,6 +3797,34 @@ int snd_soc_of_get_dai_name(struct device_node *of_node, EXPORT_SYMBOL_GPL(snd_soc_of_get_dai_name); /* + * snd_soc_of_lookup_component - Lookup component with device node + * @np: device node pointer + * + * This function looks up component based on given of_node + * + * Returns valid component pointer on success and NULL on failure to find one. + */ +struct snd_soc_component *snd_soc_of_lookup_component(struct device_node *np) +{ + struct snd_soc_component *component = NULL; + bool found = false; + + if (!np) + return NULL; + + mutex_lock(&client_mutex); + for_each_component(component) + if (component->dev->of_node == np) { + found = true; + break; + } + mutex_unlock(&client_mutex); + + return found ? component : NULL; +} +EXPORT_SYMBOL_GPL(snd_soc_of_lookup_component); + +/* * snd_soc_of_put_dai_link_codecs - Dereference device nodes in the codecs array * @dai_link: DAI link * -- Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc., is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.