From patchwork Fri Aug 2 10:57:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Charles Keepax X-Patchwork-Id: 13751449 Received: from mx0b-001ae601.pphosted.com (mx0a-001ae601.pphosted.com [67.231.149.25]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7B9711DE874 for ; Fri, 2 Aug 2024 10:58:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=67.231.149.25 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722596285; cv=none; b=SYfs8iS7VsqpEv3gcps2yoinFUkbgy+KMn6SV5ncMJdlBJafpmXIZ9xw8YmA2qanAaSsHWqaEeGQcfGPoj2ApKqh7lmvVqwYteIUG2f8LDKMK2WmAVuaJESFYwPDVqlRRDerJM9PjQX6tGqK1yEvTdtNRRD8bxF2CwekChAJQRU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722596285; c=relaxed/simple; bh=o/K/+gF9gXNZhvvqnBJOoBo6h47aosxXA3Pp2HVnTpI=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=iWUvUyMh9kik0T/V09XStvWdefdIwLNrQCbRIrdz0NT4A1RJmqSGtVVjZFR1v8WTX02OIayt22y3OOwKVLIou/NWquqfPXeo9wBVt59yXh7yG9vdDefYghla8Pq/M+RuIYneAE1f3Wat3lapIBDLEmODNO8Mfs/snRR7QQguFgE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=opensource.cirrus.com; spf=pass smtp.mailfrom=opensource.cirrus.com; dkim=pass (2048-bit key) header.d=cirrus.com header.i=@cirrus.com header.b=ATi0GU6O; arc=none smtp.client-ip=67.231.149.25 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=opensource.cirrus.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=opensource.cirrus.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=cirrus.com header.i=@cirrus.com header.b="ATi0GU6O" Received: from pps.filterd (m0077473.ppops.net [127.0.0.1]) by mx0a-001ae601.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4726i5as032551; Fri, 2 Aug 2024 05:57:41 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cirrus.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s= PODMain02222019; bh=lSRNN22vyo9fsrtxJPuMLG9lCiDsRsJSQ8TVpGoLz3M=; b= ATi0GU6OntiPOpmIJc1fG8R0ZUdOON/iEj5taGBHzfZDkLWVJcy2yQ2A2bjH6KOy izvAJ0W2qEobe+hKMHA4c0x9BiWtgZsG7jxc3rih+2AIkrzSiWYxVDRtMrzyc2oh RMawBpKcqQLJPkvimQODtbWNjZ+F7qIcF6dawaFy34oyJxisxONfoOAu7rw9hiYS NB4F3dwc97VCVMYn2kUGRZc3BfZCt/dBgnVSvrvxBapLtwcpethSJbgjT+WhhFtU J5sPkkT/icxTWvOVWZqL3/RAFaYR7L1YoDdnOgNJt6+5mDyLf7w52lMXGa2urehN s1D0hLbR3h1Qt6Pya3dFVQ== Received: from ediex01.ad.cirrus.com ([84.19.233.68]) by mx0a-001ae601.pphosted.com (PPS) with ESMTPS id 40rjdxrj1y-3 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 02 Aug 2024 05:57:41 -0500 (CDT) Received: from ediex02.ad.cirrus.com (198.61.84.81) by ediex01.ad.cirrus.com (198.61.84.80) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Fri, 2 Aug 2024 11:57:34 +0100 Received: from ediswmail9.ad.cirrus.com (198.61.86.93) by anon-ediex02.ad.cirrus.com (198.61.84.81) with Microsoft SMTP Server id 15.2.1544.9 via Frontend Transport; Fri, 2 Aug 2024 11:57:34 +0100 Received: from ediswws07.ad.cirrus.com (ediswws07.ad.cirrus.com [198.90.208.14]) by ediswmail9.ad.cirrus.com (Postfix) with ESMTP id 6E341820259; Fri, 2 Aug 2024 10:57:34 +0000 (UTC) From: Charles Keepax To: , , CC: , , Subject: [PATCH v4 4/4] ASoC: cs42l43: Cache shutter IRQ control pointers Date: Fri, 2 Aug 2024 11:57:34 +0100 Message-ID: <20240802105734.2309788-5-ckeepax@opensource.cirrus.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240802105734.2309788-1-ckeepax@opensource.cirrus.com> References: <20240802105734.2309788-1-ckeepax@opensource.cirrus.com> Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-GUID: x1wgLcwhe4laSvzqInXs2zjPus29v92Y X-Proofpoint-ORIG-GUID: x1wgLcwhe4laSvzqInXs2zjPus29v92Y X-Proofpoint-Spam-Reason: safe The microphone/speaker privacy shutter ALSA control handlers need to call pm_runtime_resume, since the hardware needs to be powered up to check the hardware state of the shutter. The IRQ handler for the shutters also needs to notify the ALSA control to inform user-space the shutters updated. However this leads to a mutex inversion, between the sdw_dev_lock and the controls_rwsem. To avoid this mutex inversion cache the kctl pointers before the IRQ handler, which avoids the need to lookup the control and take the controls_rwsem. Suggested-by: Jaroslav Kysela Signed-off-by: Charles Keepax --- No changes since v3. Thanks, Charles sound/soc/codecs/cs42l43.c | 73 +++++++++++++++++++++++++++++--------- sound/soc/codecs/cs42l43.h | 2 ++ 2 files changed, 58 insertions(+), 17 deletions(-) diff --git a/sound/soc/codecs/cs42l43.c b/sound/soc/codecs/cs42l43.c index 80825777048a6..5183b45864243 100644 --- a/sound/soc/codecs/cs42l43.c +++ b/sound/soc/codecs/cs42l43.c @@ -7,6 +7,7 @@ #include #include +#include #include #include #include @@ -252,24 +253,20 @@ CS42L43_IRQ_COMPLETE(load_detect) static irqreturn_t cs42l43_mic_shutter(int irq, void *data) { struct cs42l43_codec *priv = data; - static const char * const controls[] = { - "Decimator 1 Switch", - "Decimator 2 Switch", - "Decimator 3 Switch", - "Decimator 4 Switch", - }; - int i, ret; + struct snd_soc_component *component = priv->component; + int i; dev_dbg(priv->dev, "Microphone shutter changed\n"); - if (!priv->component) + if (!component) return IRQ_NONE; - for (i = 0; i < ARRAY_SIZE(controls); i++) { - ret = snd_soc_component_notify_control(priv->component, - controls[i]); - if (ret) + for (i = 1; i < ARRAY_SIZE(priv->kctl); i++) { + if (!priv->kctl[i]) return IRQ_NONE; + + snd_ctl_notify(component->card->snd_card, + SNDRV_CTL_EVENT_MASK_VALUE, &priv->kctl[i]->id); } return IRQ_HANDLED; @@ -278,18 +275,19 @@ static irqreturn_t cs42l43_mic_shutter(int irq, void *data) static irqreturn_t cs42l43_spk_shutter(int irq, void *data) { struct cs42l43_codec *priv = data; - int ret; + struct snd_soc_component *component = priv->component; dev_dbg(priv->dev, "Speaker shutter changed\n"); - if (!priv->component) + if (!component) return IRQ_NONE; - ret = snd_soc_component_notify_control(priv->component, - "Speaker Digital Switch"); - if (ret) + if (!priv->kctl[0]) return IRQ_NONE; + snd_ctl_notify(component->card->snd_card, + SNDRV_CTL_EVENT_MASK_VALUE, &priv->kctl[0]->id); + return IRQ_HANDLED; } @@ -590,7 +588,46 @@ static int cs42l43_asp_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mas return 0; } +static int cs42l43_dai_probe(struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component); + static const char * const controls[] = { + "Speaker Digital Switch", + "Decimator 1 Switch", + "Decimator 2 Switch", + "Decimator 3 Switch", + "Decimator 4 Switch", + }; + int i; + + static_assert(ARRAY_SIZE(controls) == ARRAY_SIZE(priv->kctl)); + + for (i = 0; i < ARRAY_SIZE(controls); i++) { + if (priv->kctl[i]) + continue; + + priv->kctl[i] = snd_soc_component_get_kcontrol(component, controls[i]); + } + + return 0; +} + +static int cs42l43_dai_remove(struct snd_soc_dai *dai) +{ + struct snd_soc_component *component = dai->component; + struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component); + int i; + + for (i = 0; i < ARRAY_SIZE(priv->kctl); i++) + priv->kctl[i] = NULL; + + return 0; +} + static const struct snd_soc_dai_ops cs42l43_asp_ops = { + .probe = cs42l43_dai_probe, + .remove = cs42l43_dai_remove, .startup = cs42l43_startup, .hw_params = cs42l43_asp_hw_params, .set_fmt = cs42l43_asp_set_fmt, @@ -611,6 +648,8 @@ static int cs42l43_sdw_hw_params(struct snd_pcm_substream *substream, } static const struct snd_soc_dai_ops cs42l43_sdw_ops = { + .probe = cs42l43_dai_probe, + .remove = cs42l43_dai_remove, .startup = cs42l43_startup, .set_stream = cs42l43_sdw_set_stream, .hw_params = cs42l43_sdw_hw_params, diff --git a/sound/soc/codecs/cs42l43.h b/sound/soc/codecs/cs42l43.h index 9924c13e1eb53..9c144e129535f 100644 --- a/sound/soc/codecs/cs42l43.h +++ b/sound/soc/codecs/cs42l43.h @@ -100,6 +100,8 @@ struct cs42l43_codec { struct delayed_work hp_ilimit_clear_work; bool hp_ilimited; int hp_ilimit_count; + + struct snd_kcontrol *kctl[5]; }; #if IS_REACHABLE(CONFIG_SND_SOC_CS42L43_SDW)