From patchwork Sun Mar 4 14:35:54 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 10257691 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B1A08602B5 for ; Sun, 4 Mar 2018 14:37:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9359828797 for ; Sun, 4 Mar 2018 14:37:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 332DC287FD; Sun, 4 Mar 2018 14:37:21 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 22EB528797 for ; Sun, 4 Mar 2018 14:37:20 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id CF8122673D2; Sun, 4 Mar 2018 15:36:33 +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 D83502673C4; Sun, 4 Mar 2018 15:36:25 +0100 (CET) Received: from mx1.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by alsa0.perex.cz (Postfix) with ESMTP id 541F9267338 for ; Sun, 4 Mar 2018 15:36:22 +0100 (CET) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C85264023141; Sun, 4 Mar 2018 14:36:21 +0000 (UTC) Received: from shalem.localdomain.com (ovpn-116-72.ams2.redhat.com [10.36.116.72]) by smtp.corp.redhat.com (Postfix) with ESMTP id A66EE111DCEE; Sun, 4 Mar 2018 14:36:20 +0000 (UTC) From: Hans de Goede To: Mark Brown , Bard Liao , Oder Chiou , Pierre-Louis Bossart Date: Sun, 4 Mar 2018 15:35:54 +0100 Message-Id: <20180304143610.21125-7-hdegoede@redhat.com> In-Reply-To: <20180304143610.21125-1-hdegoede@redhat.com> References: <20180304143610.21125-1-hdegoede@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Sun, 04 Mar 2018 14:36:21 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.6]); Sun, 04 Mar 2018 14:36:21 +0000 (UTC) for IP:'10.11.54.3' DOMAIN:'int-mx03.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'hdegoede@redhat.com' RCPT:'' Cc: Hans de Goede , alsa-devel@alsa-project.org, Carlo Caione , Takashi Iwai Subject: [alsa-devel] [PATCH v3 06/22] ASoC: rt5651: Enable sticky mode for OVCD 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 X-Virus-Scanned: ClamAV using ClamSMTP When the mic-gnd contacts are short-circuited by a headphones plug, the hardware periodically retries if it can apply the bias-current leading to the OVCD status flip-flopping 1-0-1 with it being 0 about 10% of the time. This commit enables the sticky bit for the OVCD status to deal with this. This commit also introduces 2 helper functions to deal with the OVCD status bit, this may seem a bit overkill now, but these will also be used in future patches. Tested-by: Carlo Caione Signed-off-by: Hans de Goede --- sound/soc/codecs/rt5651.c | 33 ++++++++++++++++++++++++++++++--- 1 file changed, 30 insertions(+), 3 deletions(-) diff --git a/sound/soc/codecs/rt5651.c b/sound/soc/codecs/rt5651.c index 4f78694adf70..3a439c121b0c 100644 --- a/sound/soc/codecs/rt5651.c +++ b/sound/soc/codecs/rt5651.c @@ -1578,6 +1578,22 @@ static void rt5651_disable_micbias1_for_ovcd(struct snd_soc_component *component snd_soc_dapm_mutex_unlock(dapm); } +static void rt5651_clear_micbias1_ovcd(struct snd_soc_component *component) +{ + snd_soc_component_update_bits(component, RT5651_IRQ_CTRL2, + RT5651_MB1_OC_CLR, 0); +} + +static bool rt5651_micbias1_ovcd(struct snd_soc_component *component) +{ + int val; + + val = snd_soc_component_read32(component, RT5651_IRQ_CTRL2); + dev_dbg(component->dev, "irq ctrl2 %#04x\n", val); + + return (val & RT5651_MB1_OC_CLR); +} + static irqreturn_t rt5651_irq(int irq, void *data) { struct rt5651_priv *rt5651 = data; @@ -1646,6 +1662,18 @@ static int rt5651_set_jack(struct snd_soc_component *component, RT5651_PWR_MB_PU | RT5651_PWR_CLK12M_PU); + /* + * The over-current-detect is only reliable in detecting the absence + * of over-current, when the mic-contact in the jack is short-circuited, + * the hardware periodically retries if it can apply the bias-current + * leading to the ovcd status flip-flopping 1-0-1 with it being 0 about + * 10% of the time, as we poll the ovcd status bit we might hit that + * 10%, so we enable sticky mode and when checking OVCD we clear the + * status, msleep() a bit and then check to get a reliable reading. + */ + snd_soc_component_update_bits(component, RT5651_IRQ_CTRL2, + RT5651_MB1_OC_STKY_MASK, RT5651_MB1_OC_STKY_EN); + rt5651->hp_jack = hp_jack; ret = devm_request_threaded_irq(component->dev, rt5651->irq, NULL, @@ -1879,13 +1907,12 @@ static int rt5651_jack_detect(struct snd_soc_component *component, int jack_inse if (jack_insert) { rt5651_enable_micbias1_for_ovcd(component); + rt5651_clear_micbias1_ovcd(component); msleep(100); - if (snd_soc_component_read32(component, RT5651_IRQ_CTRL2) & RT5651_MB1_OC_CLR) + if (rt5651_micbias1_ovcd(component)) jack_type = SND_JACK_HEADPHONE; else jack_type = SND_JACK_HEADSET; - snd_soc_component_update_bits(component, RT5651_IRQ_CTRL2, - RT5651_MB1_OC_CLR, 0); rt5651_disable_micbias1_for_ovcd(component); } else { /* jack out */ jack_type = 0;