From patchwork Wed Dec 23 00:09:00 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 105079 Delivered-To: patch@linaro.org Received: by 10.112.89.199 with SMTP id bq7csp3552448lbb; Tue, 22 Dec 2015 16:13:16 -0800 (PST) X-Received: by 10.194.175.194 with SMTP id cc2mr30404840wjc.121.1450829596606; Tue, 22 Dec 2015 16:13:16 -0800 (PST) Return-Path: Received: from alsa0.perex.cz (alsa0.perex.cz. [77.48.224.243]) by mx.google.com with ESMTP id c83si46600999wmf.21.2015.12.22.16.13.16; Tue, 22 Dec 2015 16:13:16 -0800 (PST) Received-SPF: neutral (google.com: 77.48.224.243 is neither permitted nor denied by best guess record for domain of alsa-devel-bounces@alsa-project.org) client-ip=77.48.224.243; Authentication-Results: mx.google.com; spf=neutral (google.com: 77.48.224.243 is neither permitted nor denied by best guess record for domain of alsa-devel-bounces@alsa-project.org) smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 8D2C226608F; Wed, 23 Dec 2015 01:13:15 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.2.4 (2008-01-01) on mail1.perex.cz X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=disabled version=3.2.4 Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id EEA92266094; Wed, 23 Dec 2015 01:09:23 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 00573265E24; Wed, 23 Dec 2015 01:09:18 +0100 (CET) Received: from mezzanine.sirena.org.uk (mezzanine.sirena.org.uk [106.187.55.193]) by alsa0.perex.cz (Postfix) with ESMTP id EF609265DDF for ; Wed, 23 Dec 2015 01:09:06 +0100 (CET) Received: from cl-2057.lon-02.gb.sixxs.net ([2a01:348:6:808::2] helo=debutante) by mezzanine.sirena.org.uk with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1aBWzH-0000da-3n; Wed, 23 Dec 2015 00:09:03 +0000 Received: from broonie by debutante with local (Exim 4.86) (envelope-from ) id 1aBWzE-0007MM-CL; Wed, 23 Dec 2015 00:09:00 +0000 From: Mark Brown To: Adam Thomson , Mark Brown In-Reply-To: Message-Id: Date: Wed, 23 Dec 2015 00:09:00 +0000 X-SA-Exim-Connect-IP: 2a01:348:6:808::2 X-SA-Exim-Mail-From: broonie@sirena.org.uk X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on mezzanine.sirena.org.uk) Cc: alsa-devel@alsa-project.org Subject: [alsa-devel] Applied "ASoC: da7218: Enable mic level detection reporting to user-space" to the asoc tree X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org The patch ASoC: da7218: Enable mic level detection reporting to user-space has been applied to the asoc tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From e05c25a1af29d65260ed1458f2cc4a959030ebd2 Mon Sep 17 00:00:00 2001 From: Adam Thomson Date: Thu, 3 Dec 2015 17:10:07 +0000 Subject: [PATCH] ASoC: da7218: Enable mic level detection reporting to user-space This patch adds support to the codec driver to handle mic level detect related IRQs, and report these to user-space using a uevent variable. The uevent variable string "EVENT=MIC_LEVEL_DETECT" is sent to user-space, if the mic level detect feature is enabled, and the audio captured at the chosen mic(s) is above a certain threshold. User-space can then handle the event accordingly (e.g. process audio capture stream). This method was chosen over ALSA control notification for a couple of reasons: 1) There's no requirement here for a control to read state from. The event is the only thing that's required and of interest. 2) tinyalsa support for control notifications does not exist so on platforms using this over alsa-lib there is a need to add code to support this event handling. Another possible option would be to use the standard Jack reporting framework but this really does not fit for this kind of event. Finally, use of the input device framework is not being encouraged, due to difficulties in enabling apps to access input devices, so this has also been avoided. Signed-off-by: Adam Thomson Signed-off-by: Mark Brown --- sound/soc/codecs/da7218.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) -- 2.6.2 _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel diff --git a/sound/soc/codecs/da7218.c b/sound/soc/codecs/da7218.c index eacde128c4d6..72686517ff54 100644 --- a/sound/soc/codecs/da7218.c +++ b/sound/soc/codecs/da7218.c @@ -2202,6 +2202,16 @@ int da7218_hpldet(struct snd_soc_codec *codec, struct snd_soc_jack *jack) } EXPORT_SYMBOL_GPL(da7218_hpldet); +static void da7218_micldet_irq(struct snd_soc_codec *codec) +{ + char *envp[] = { + "EVENT=MIC_LEVEL_DETECT", + NULL, + }; + + kobject_uevent_env(&codec->dev->kobj, KOBJ_CHANGE, envp); +} + static void da7218_hpldet_irq(struct snd_soc_codec *codec) { struct da7218_priv *da7218 = snd_soc_codec_get_drvdata(codec); @@ -2232,6 +2242,10 @@ static irqreturn_t da7218_irq_thread(int irq, void *data) if (!status) return IRQ_NONE; + /* Mic level detect */ + if (status & DA7218_LVL_DET_EVENT_MASK) + da7218_micldet_irq(codec); + /* HP detect */ if (status & DA7218_HPLDET_JACK_EVENT_MASK) da7218_hpldet_irq(codec); @@ -2936,11 +2950,6 @@ static int da7218_probe(struct snd_soc_codec *codec) } if (da7218->irq) { - /* Mask off mic level events, currently not handled */ - snd_soc_update_bits(codec, DA7218_EVENT_MASK, - DA7218_LVL_DET_EVENT_MSK_MASK, - DA7218_LVL_DET_EVENT_MSK_MASK); - ret = devm_request_threaded_irq(codec->dev, da7218->irq, NULL, da7218_irq_thread, IRQF_TRIGGER_LOW | IRQF_ONESHOT,