From patchwork Mon Mar 20 20:35:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marian Postevca X-Patchwork-Id: 13181831 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E53C3C6FD1C for ; Mon, 20 Mar 2023 20:38:25 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 94B981F0; Mon, 20 Mar 2023 21:37:33 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 94B981F0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1679344703; bh=WSkN0ZZK6/27eS+cWv7kIvWxbi85TDSr0hkiRngacrI=; h=From:To:Subject:Date:In-Reply-To:References:CC:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=ke+X/SVHGcjzggVcKAMR1ErgEMj7toA+TtjXbxQ5xqfyYQEkOTt2v9Jv/FWxnUEfl S4D1f/GphRnmLrR5T+qpymvqwVm1LBkISFfZxjbJmz6+eWU4RgVuWgTnPP7evot/sM dv/ZZ44obfnSFo/Ef2WYkzeBDbYP0hABSYYVFYMA= Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 5B4B6F8055A; Mon, 20 Mar 2023 21:36:28 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id D69D6F80482; Mon, 20 Mar 2023 21:36:21 +0100 (CET) Received: from mail.mutex.one (mail.mutex.one [62.77.152.124]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 246FEF80482 for ; Mon, 20 Mar 2023 21:35:31 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 246FEF80482 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=mutex.one header.i=@mutex.one header.a=rsa-sha256 header.s=default header.b=i4J1qBnH Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.mutex.one (Postfix) with ESMTP id B9F6516C0057; Mon, 20 Mar 2023 22:35:30 +0200 (EET) X-Virus-Scanned: Debian amavisd-new at mail.mutex.one Received: from mail.mutex.one ([127.0.0.1]) by localhost (mail.mutex.one [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id tLxfaqPRw7I4; Mon, 20 Mar 2023 22:35:28 +0200 (EET) From: Marian Postevca DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=mutex.one; s=default; t=1679344528; bh=WSkN0ZZK6/27eS+cWv7kIvWxbi85TDSr0hkiRngacrI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i4J1qBnHV/8QMhVVNv+tnfYDl4MISC2dq6Jk1H6YB38pe/Ub5qsvS5QyK12mG7Qt6 eoGRRObhCCkyee/8nsXkutuOQtUkTi1YPcEWZOzm2V07LNERW4iTDUSdZFXZ42q4Kc NiIbGkVnbKHTNsUUegv38VN1fK1BvE7JKIwMwo6o= To: Takashi Iwai , Mark Brown , Liam Girdwood , Jaroslav Kysela Subject: [PATCH 4/4] ASoC: amd: acp: Improve support for speaker power events Date: Mon, 20 Mar 2023 22:35:19 +0200 Message-Id: <20230320203519.20137-5-posteuca@mutex.one> In-Reply-To: <20230320203519.20137-1-posteuca@mutex.one> References: <20230320203519.20137-1-posteuca@mutex.one> MIME-Version: 1.0 Message-ID-Hash: UAMYEESWG3DDOLDO6INSTIE4CXX53VAS X-Message-ID-Hash: UAMYEESWG3DDOLDO6INSTIE4CXX53VAS X-MailFrom: posteuca@mutex.one X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org, Marian Postevca X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: In order to reduce the audible pops when speaker or headphones are activated or disabled we need to delay the switching of the GPIOs. We need to also disable/enable the speaker/headphones GPIOs when the audio stream is stopped/started. To avoid race conditions between the speaker power event callback and the trigger callback we use a ring buffer to save the events that we need to process in the delayed work callback. Signed-off-by: Marian Postevca --- sound/soc/amd/acp/acp3x-es83xx/acp3x-es83xx.c | 154 +++++++++++++++++- 1 file changed, 149 insertions(+), 5 deletions(-) diff --git a/sound/soc/amd/acp/acp3x-es83xx/acp3x-es83xx.c b/sound/soc/amd/acp/acp3x-es83xx/acp3x-es83xx.c index 138a7c12669b..033c94e91928 100644 --- a/sound/soc/amd/acp/acp3x-es83xx/acp3x-es83xx.c +++ b/sound/soc/amd/acp/acp3x-es83xx/acp3x-es83xx.c @@ -20,8 +20,18 @@ #include #include #include +#include + #include "../acp-mach.h" +#define RB_SIZE 32 + +#define circ_count(circ) \ + (CIRC_CNT((circ)->head, (circ)->tail, RB_SIZE)) + +#define circ_space(circ) \ + (CIRC_SPACE((circ)->head, (circ)->tail, RB_SIZE)) + #define get_mach_priv(card) ((struct acp3x_es83xx_private *)((acp_get_drvdata(card))->mach_priv)) /* mclk-div-by-2 + terminating entry */ @@ -32,14 +42,35 @@ #define ES83XX_ENABLE_DMIC BIT(4) #define ES83XX_48_MHZ_MCLK BIT(5) +enum { + SPEAKER_ON = 0, + SPEAKER_OFF, + SPEAKER_SUSPEND, + SPEAKER_RESUME, + SPEAKER_MAX +}; + +const char *msg[SPEAKER_MAX] = { + "SPEAKER_ON", + "SPEAKER_OFF", + "SPEAKER_SUSPEND", + "SPEAKER_RESUME" +}; + struct acp3x_es83xx_private { unsigned long quirk; + bool speaker_on; + bool stream_suspended; struct snd_soc_component *codec; struct device *codec_dev; struct gpio_desc *gpio_speakers, *gpio_headphone; struct acpi_gpio_params enable_spk_gpio, enable_hp_gpio; struct acpi_gpio_mapping gpio_mapping[3]; struct snd_soc_dapm_route mic_map[2]; + struct delayed_work jack_work; + struct mutex rb_lock; + struct circ_buf gpio_rb; + u8 gpio_events_buf[RB_SIZE]; }; static const unsigned int rates[] = { @@ -86,6 +117,107 @@ static void acp3x_es83xx_set_gpios_values(struct acp3x_es83xx_private *priv, gpiod_set_value_cansleep(priv->gpio_headphone, headphone); } +static void acp3x_es83xx_rb_insert_evt(struct circ_buf *rb, u8 val) +{ + u8 *buf = rb->buf; + + if (circ_space(rb) == 0) { + /* make some space by dropping the oldest entry, we are more + * interested in the last event + */ + rb->tail = (rb->tail + 1) & (RB_SIZE - 1); + } + buf[rb->head] = val; + rb->head = (rb->head + 1) & (RB_SIZE - 1); +} + +static int acp3x_es83xx_rb_remove_evt(struct circ_buf *rb) +{ + u8 *buf = rb->buf; + int rc = -1; + + if (circ_count(rb)) { + rc = buf[rb->tail]; + rb->tail = (rb->tail + 1) & (RB_SIZE - 1); + } + return rc; +} + +static void acp3x_es83xx_jack_events(struct work_struct *work) +{ + struct acp3x_es83xx_private *priv = + container_of(work, struct acp3x_es83xx_private, jack_work.work); + int evt; + + mutex_lock(&priv->rb_lock); + do { + evt = acp3x_es83xx_rb_remove_evt(&priv->gpio_rb); + dev_dbg(priv->codec_dev, "jack event, %s\n", msg[evt]); + switch (evt) { + case SPEAKER_SUSPEND: + acp3x_es83xx_set_gpios_values(priv, 0, 0); + break; + case SPEAKER_RESUME: + acp3x_es83xx_set_gpios_values(priv, priv->speaker_on, !priv->speaker_on); + break; + case SPEAKER_ON: + priv->speaker_on = true; + acp3x_es83xx_set_gpios_values(priv, 1, 0); + break; + case SPEAKER_OFF: + priv->speaker_on = false; + acp3x_es83xx_set_gpios_values(priv, 0, 1); + break; + } + } while (evt != -1); + mutex_unlock(&priv->rb_lock); +} + +static int acp3x_es83xx_trigger(struct snd_pcm_substream *substream, int cmd) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + struct snd_soc_card *card = rtd->card; + struct acp3x_es83xx_private *priv = get_mach_priv(card); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + case SNDRV_PCM_TRIGGER_RESUME: + if (substream->stream == 0) { + dev_dbg(priv->codec_dev, "trigger start/release/resume, activating GPIOs\n"); + mutex_lock(&priv->rb_lock); + if (priv->stream_suspended) { + priv->stream_suspended = false; + acp3x_es83xx_rb_insert_evt(&priv->gpio_rb, SPEAKER_RESUME); + mutex_unlock(&priv->rb_lock); + queue_delayed_work(system_wq, &priv->jack_work, + msecs_to_jiffies(1)); + } else { + mutex_unlock(&priv->rb_lock); + } + } + + break; + + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_STOP: + if (substream->stream == 0) { + dev_dbg(priv->codec_dev, "trigger pause/suspend/stop deactivating GPIOs\n"); + mutex_lock(&priv->rb_lock); + priv->stream_suspended = true; + acp3x_es83xx_rb_insert_evt(&priv->gpio_rb, SPEAKER_SUSPEND); + mutex_unlock(&priv->rb_lock); + queue_delayed_work(system_wq, &priv->jack_work, msecs_to_jiffies(1)); + } + break; + default: + return -EINVAL; + } + + return 0; +} + static int acp3x_es83xx_create_swnode(struct device *codec_dev) { struct property_entry props[MAX_NO_PROPS] = {}; @@ -212,12 +344,17 @@ static int acp3x_es83xx_speaker_power_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct acp3x_es83xx_private *priv = get_mach_priv(w->dapm->card); + u8 val; + + val = SND_SOC_DAPM_EVENT_ON(event) ? SPEAKER_ON : SPEAKER_OFF; - dev_dbg(priv->codec_dev, "speaker power event: %d\n", event); - if (SND_SOC_DAPM_EVENT_ON(event)) - acp3x_es83xx_set_gpios_values(priv, 1, 0); - else - acp3x_es83xx_set_gpios_values(priv, 0, 1); + dev_dbg(priv->codec_dev, "speaker power event = %s\n", msg[val]); + + mutex_lock(&priv->rb_lock); + acp3x_es83xx_rb_insert_evt(&priv->gpio_rb, val); + mutex_unlock(&priv->rb_lock); + + queue_delayed_work(system_wq, &priv->jack_work, msecs_to_jiffies(70)); return 0; } @@ -353,6 +490,7 @@ static int acp3x_es83xx_init(struct snd_soc_pcm_runtime *runtime) static const struct snd_soc_ops acp3x_es83xx_ops = { .startup = acp3x_es83xx_codec_startup, + .trigger = acp3x_es83xx_trigger, }; @@ -452,6 +590,12 @@ static int acp3x_es83xx_probe(struct snd_soc_card *card) priv->codec_dev = codec_dev; priv->quirk = (unsigned long)dmi_id->driver_data; acp_drvdata->mach_priv = priv; + + priv->gpio_rb.buf = priv->gpio_events_buf; + priv->gpio_rb.head = priv->gpio_rb.tail = 0; + mutex_init(&priv->rb_lock); + + INIT_DELAYED_WORK(&priv->jack_work, acp3x_es83xx_jack_events); dev_info(dev, "successfully probed the sound card\n"); } else { ret = -ENODEV;