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To: alsa-devel@alsa-project.org Cc: Andy Liu , Derek Simkowiak , Mark Brown , Daniel Beer , linux-kernel@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 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: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" There's some setup we need to do in order to get the DSP initialized, and this can't be done until a bit-clock is ready. In an earlier version of this driver, this work was done in a DAPM callback. The DAPM callback doesn't guarantee that the bit-clock is running, so the work was moved instead to the trigger callback. Unfortunately this callback runs in atomic context, and the setup code needs to do I2C transactions. Here we use a work_struct to kick off the setup in a thread instead. Fixes: ec45268467f4 ("ASoC: add support for TAS5805M digital amplifier") Signed-off-by: Daniel Beer --- sound/soc/codecs/tas5805m.c | 126 ++++++++++++++++++++++++------------ 1 file changed, 86 insertions(+), 40 deletions(-) diff --git a/sound/soc/codecs/tas5805m.c b/sound/soc/codecs/tas5805m.c index beb4ec629a03..d720c67b9675 100644 --- a/sound/soc/codecs/tas5805m.c +++ b/sound/soc/codecs/tas5805m.c @@ -154,6 +154,7 @@ static const uint32_t tas5805m_volume[] = { #define TAS5805M_VOLUME_MIN 0 struct tas5805m_priv { + struct i2c_client *i2c; struct regulator *pvdd; struct gpio_desc *gpio_pdn_n; @@ -165,6 +166,9 @@ struct tas5805m_priv { int vol[2]; bool is_powered; bool is_muted; + + struct work_struct work; + struct mutex lock; }; static void set_dsp_scale(struct regmap *rm, int offset, int vol) @@ -181,13 +185,11 @@ static void set_dsp_scale(struct regmap *rm, int offset, int vol) regmap_bulk_write(rm, offset, v, ARRAY_SIZE(v)); } -static void tas5805m_refresh(struct snd_soc_component *component) +static void tas5805m_refresh(struct tas5805m_priv *tas5805m) { - struct tas5805m_priv *tas5805m = - snd_soc_component_get_drvdata(component); struct regmap *rm = tas5805m->regmap; - dev_dbg(component->dev, "refresh: is_muted=%d, vol=%d/%d\n", + dev_dbg(&tas5805m->i2c->dev, "refresh: is_muted=%d, vol=%d/%d\n", tas5805m->is_muted, tas5805m->vol[0], tas5805m->vol[1]); regmap_write(rm, REG_PAGE, 0x00); @@ -226,8 +228,11 @@ static int tas5805m_vol_get(struct snd_kcontrol *kcontrol, struct tas5805m_priv *tas5805m = snd_soc_component_get_drvdata(component); + mutex_lock(&tas5805m->lock); ucontrol->value.integer.value[0] = tas5805m->vol[0]; ucontrol->value.integer.value[1] = tas5805m->vol[1]; + mutex_unlock(&tas5805m->lock); + return 0; } @@ -243,11 +248,13 @@ static int tas5805m_vol_put(struct snd_kcontrol *kcontrol, snd_soc_kcontrol_component(kcontrol); struct tas5805m_priv *tas5805m = snd_soc_component_get_drvdata(component); + int ret = 0; if (!(volume_is_valid(ucontrol->value.integer.value[0]) && volume_is_valid(ucontrol->value.integer.value[1]))) return -EINVAL; + mutex_lock(&tas5805m->lock); if (tas5805m->vol[0] != ucontrol->value.integer.value[0] || tas5805m->vol[1] != ucontrol->value.integer.value[1]) { tas5805m->vol[0] = ucontrol->value.integer.value[0]; @@ -256,9 +263,10 @@ static int tas5805m_vol_put(struct snd_kcontrol *kcontrol, tas5805m->vol[0], tas5805m->vol[1], tas5805m->is_powered); if (tas5805m->is_powered) - tas5805m_refresh(component); - return 1; + tas5805m_refresh(tas5805m); + ret = 1; } + mutex_unlock(&tas5805m->lock); return 0; } @@ -294,54 +302,83 @@ static int tas5805m_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_component *component = dai->component; struct tas5805m_priv *tas5805m = snd_soc_component_get_drvdata(component); - struct regmap *rm = tas5805m->regmap; - unsigned int chan, global1, global2; switch (cmd) { case SNDRV_PCM_TRIGGER_START: case SNDRV_PCM_TRIGGER_RESUME: case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - dev_dbg(component->dev, "DSP startup\n"); - - /* We mustn't issue any I2C transactions until the I2S - * clock is stable. Furthermore, we must allow a 5ms - * delay after the first set of register writes to - * allow the DSP to boot before configuring it. - */ - usleep_range(5000, 10000); - send_cfg(rm, dsp_cfg_preboot, - ARRAY_SIZE(dsp_cfg_preboot)); - usleep_range(5000, 15000); - send_cfg(rm, tas5805m->dsp_cfg_data, - tas5805m->dsp_cfg_len); - - tas5805m->is_powered = true; - tas5805m_refresh(component); + dev_dbg(component->dev, "clock start\n"); + schedule_work(&tas5805m->work); break; case SNDRV_PCM_TRIGGER_STOP: case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - dev_dbg(component->dev, "DSP shutdown\n"); + break; - tas5805m->is_powered = false; + default: + return -EINVAL; + } - regmap_write(rm, REG_PAGE, 0x00); - regmap_write(rm, REG_BOOK, 0x00); + return 0; +} - regmap_read(rm, REG_CHAN_FAULT, &chan); - regmap_read(rm, REG_GLOBAL_FAULT1, &global1); - regmap_read(rm, REG_GLOBAL_FAULT2, &global2); +static void do_work(struct work_struct *work) +{ + struct tas5805m_priv *tas5805m = + container_of(work, struct tas5805m_priv, work); + struct regmap *rm = tas5805m->regmap; - dev_dbg(component->dev, - "fault regs: CHAN=%02x, GLOBAL1=%02x, GLOBAL2=%02x\n", - chan, global1, global2); + dev_dbg(&tas5805m->i2c->dev, "DSP startup\n"); - regmap_write(rm, REG_DEVICE_CTRL_2, DCTRL2_MODE_HIZ); - break; + mutex_lock(&tas5805m->lock); + /* We mustn't issue any I2C transactions until the I2S + * clock is stable. Furthermore, we must allow a 5ms + * delay after the first set of register writes to + * allow the DSP to boot before configuring it. + */ + usleep_range(5000, 10000); + send_cfg(rm, dsp_cfg_preboot, ARRAY_SIZE(dsp_cfg_preboot)); + usleep_range(5000, 15000); + send_cfg(rm, tas5805m->dsp_cfg_data, tas5805m->dsp_cfg_len); + + tas5805m->is_powered = true; + tas5805m_refresh(tas5805m); + mutex_unlock(&tas5805m->lock); +} - default: - return -EINVAL; +static int tas5805m_dac_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct tas5805m_priv *tas5805m = + snd_soc_component_get_drvdata(component); + struct regmap *rm = tas5805m->regmap; + + if (event & SND_SOC_DAPM_PRE_PMD) { + unsigned int chan, global1, global2; + + dev_dbg(component->dev, "DSP shutdown\n"); + cancel_work_sync(&tas5805m->work); + + mutex_lock(&tas5805m->lock); + if (tas5805m->is_powered) { + tas5805m->is_powered = false; + + regmap_write(rm, REG_PAGE, 0x00); + regmap_write(rm, REG_BOOK, 0x00); + + regmap_read(rm, REG_CHAN_FAULT, &chan); + regmap_read(rm, REG_GLOBAL_FAULT1, &global1); + regmap_read(rm, REG_GLOBAL_FAULT2, &global2); + + dev_dbg(component->dev, "fault regs: CHAN=%02x, " + "GLOBAL1=%02x, GLOBAL2=%02x\n", + chan, global1, global2); + + regmap_write(rm, REG_DEVICE_CTRL_2, DCTRL2_MODE_HIZ); + } + mutex_unlock(&tas5805m->lock); } return 0; @@ -354,7 +391,8 @@ static const struct snd_soc_dapm_route tas5805m_audio_map[] = { static const struct snd_soc_dapm_widget tas5805m_dapm_widgets[] = { SND_SOC_DAPM_AIF_IN("DAC IN", "Playback", 0, SND_SOC_NOPM, 0, 0), - SND_SOC_DAPM_DAC("DAC", NULL, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_DAC_E("DAC", NULL, SND_SOC_NOPM, 0, 0, + tas5805m_dac_event, SND_SOC_DAPM_PRE_PMD), SND_SOC_DAPM_OUTPUT("OUT") }; @@ -375,11 +413,14 @@ static int tas5805m_mute(struct snd_soc_dai *dai, int mute, int direction) struct tas5805m_priv *tas5805m = snd_soc_component_get_drvdata(component); + mutex_lock(&tas5805m->lock); dev_dbg(component->dev, "set mute=%d (is_powered=%d)\n", mute, tas5805m->is_powered); + tas5805m->is_muted = mute; if (tas5805m->is_powered) - tas5805m_refresh(component); + tas5805m_refresh(tas5805m); + mutex_unlock(&tas5805m->lock); return 0; } @@ -434,6 +475,7 @@ static int tas5805m_i2c_probe(struct i2c_client *i2c) if (!tas5805m) return -ENOMEM; + tas5805m->i2c = i2c; tas5805m->pvdd = devm_regulator_get(dev, "pvdd"); if (IS_ERR(tas5805m->pvdd)) { dev_err(dev, "failed to get pvdd supply: %ld\n", @@ -507,6 +549,9 @@ static int tas5805m_i2c_probe(struct i2c_client *i2c) gpiod_set_value(tas5805m->gpio_pdn_n, 1); usleep_range(10000, 15000); + INIT_WORK(&tas5805m->work, do_work); + mutex_init(&tas5805m->lock); + /* Don't register through devm. We need to be able to unregister * the component prior to deasserting PDN# */ @@ -527,6 +572,7 @@ static void tas5805m_i2c_remove(struct i2c_client *i2c) struct device *dev = &i2c->dev; struct tas5805m_priv *tas5805m = dev_get_drvdata(dev); + cancel_work_sync(&tas5805m->work); snd_soc_unregister_component(dev); gpiod_set_value(tas5805m->gpio_pdn_n, 0); usleep_range(10000, 15000); From patchwork Thu Oct 27 08:38:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Beer X-Patchwork-Id: 13056624 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 AD942C43217 for ; Sun, 27 Nov 2022 07:30:35 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 290A31701; Sun, 27 Nov 2022 08:29:43 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 290A31701 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1669534233; bh=zOw/SAsOe50brgKzhx5SOBKKAdL94DgcV0DtnfvPKgE=; h=From:Date:Subject:To:Cc:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=mdRJUAwTJugTxpFdyYkUu5yy2cN5Ke8V3hTUsfo8yLUBXVQOM9qZAJkgEgU6XV3cW 2MYArwMIUmbVTrUDq5g3W5ZRhy2Bi+YdnGxLNIvHqvHIWDDTJGL+6KdCx97BWj7pfo 6kTEnBRmtRtDbtyB0dLsLy9x9+n4dDzSngf4eyKo= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 8A69AF802BE; Sun, 27 Nov 2022 08:29:23 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id C410FF802BE; Sun, 27 Nov 2022 08:29:21 +0100 (CET) Received: from mail-pl1-x634.google.com (mail-pl1-x634.google.com [IPv6:2607:f8b0:4864:20::634]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id ED036F8021D for ; Sun, 27 Nov 2022 08:29:14 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz ED036F8021D Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=igorinstitute-com.20210112.gappssmtp.com header.i=@igorinstitute-com.20210112.gappssmtp.com header.b="R+W/2Kk0" Received: by mail-pl1-x634.google.com with SMTP id p12so7460117plq.4 for ; Sat, 26 Nov 2022 23:29:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=igorinstitute-com.20210112.gappssmtp.com; s=20210112; h=cc:to:subject:date:from:message-id:from:to:cc:subject:date :message-id:reply-to; bh=A+15f3T3+S3cU3nRipNryZJ4svWYzk/FzguyIiKQo5Y=; b=R+W/2Kk0/vwErqgTCVnwyJdA+49fCvdEw5R4Q3NlZCWvbQpbNIZWfbGScngPYJ6Eub Qkku9e2Vc6FV7h1ctudVvvNrEYrC6amRep79WGs311zLkdsynZP0QPGHEf4ND0mmzpFj C25yztKS7BnZWheWndZBqvYVDNmuC5NalsYophyEaY3KTnIbBKIwtWKRLFqtHFpP0Xk8 yjBlszs/AQ60Wiv86BNIFnwm02bc0/U9U1IIww4LXexFiJw5HVb2ZsZyx5nghOWcO0DA Vq1T5ZZ5Hey9UlsTVw+K70nak6h95uM1Z2pxqLcp4J/zU4oBwhFj8ykn6kIUTUOQPdxJ bADA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:date:from:message-id:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=A+15f3T3+S3cU3nRipNryZJ4svWYzk/FzguyIiKQo5Y=; b=OOVnLXp6qxBiQHbMWafopTXYqrF/hRqRJSYJLJDa//jrHe5iqeu5hEfigl4kOvQQz5 XDWCVtzwmpjo5K2DlHv6qx+0/ZwYEvU2KE50p62fQ7nKhgMScLE38uxYxHN9QoCiSDSv 75VWnJp+13JhvvbSeVk731mcJQKOKMZvl14zUzoVFPUl0JKXcIoybD5DQdg2ZgBqYPDX DYi1XfbO6hwzJeQIQrvGeCSKvrYuQolwS5BpLim5m4YB5kx4qMwu91bqJMIvZ7dLOj0R +FOJX0C6RvgUEai2iPWwwShQGnonlOzMfEUjwyj6LB+Pxv1eiGvo474FhiH1w3dwAunI joWw== X-Gm-Message-State: ANoB5plDNMADYEVN8FUOx4baWq5LogySM9DWa02Su2+mtTY2ZUJxKu68 h29jdrL7/MTwfMk7puFFgv0FGelfoPYAAg== X-Google-Smtp-Source: AA0mqf6InhROC4XL8bT1IanMdMMMCSjQhLQ2R8kuioKvNmGLuRhHLl78r8THfEvxaQYvDKhb1R4iyg== X-Received: by 2002:a17:902:a718:b0:189:7722:99d7 with SMTP id w24-20020a170902a71800b00189772299d7mr5479382plq.96.1669534151792; Sat, 26 Nov 2022 23:29:11 -0800 (PST) Received: from localhost ([121.99.145.49]) by smtp.gmail.com with ESMTPSA id b23-20020aa79517000000b00574d7111c99sm2794396pfp.195.2022.11.26.23.29.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 26 Nov 2022 23:29:11 -0800 (PST) Message-ID: <638311c7.a70a0220.4e021.3abe@mx.google.com> From: Daniel Beer Date: Thu, 27 Oct 2022 21:38:38 +1300 Subject: [PATCH 2/2] ASoC: tas5805m: add missing page switch. To: alsa-devel@alsa-project.org Cc: Andy Liu , Derek Simkowiak , Mark Brown , Daniel Beer , linux-kernel@vger.kernel.org X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 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: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" In tas5805m_refresh, we switch pages to update the DSP volume control, but we need to switch back to page 0 before trying to alter the soft-mute control. This latter page-switch was missing. Fixes: ec45268467f4 ("ASoC: add support for TAS5805M digital amplifier") Signed-off-by: Daniel Beer --- sound/soc/codecs/tas5805m.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/soc/codecs/tas5805m.c b/sound/soc/codecs/tas5805m.c index d720c67b9675..5cf7726904c2 100644 --- a/sound/soc/codecs/tas5805m.c +++ b/sound/soc/codecs/tas5805m.c @@ -203,6 +203,9 @@ static void tas5805m_refresh(struct tas5805m_priv *tas5805m) set_dsp_scale(rm, 0x24, tas5805m->vol[0]); set_dsp_scale(rm, 0x28, tas5805m->vol[1]); + regmap_write(rm, REG_PAGE, 0x00); + regmap_write(rm, REG_BOOK, 0x00); + /* Set/clear digital soft-mute */ regmap_write(rm, REG_DEVICE_CTRL_2, (tas5805m->is_muted ? DCTRL2_MUTE : 0) |