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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 | 128 ++++++++++++++++++++++++------------ 1 file changed, 87 insertions(+), 41 deletions(-) diff --git a/sound/soc/codecs/tas5805m.c b/sound/soc/codecs/tas5805m.c index beb4ec629a03..6e2edf045446 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]; @@ -256,11 +263,12 @@ 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; + return ret; } static const struct snd_kcontrol_new tas5805m_snd_controls[] = { @@ -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: 630864 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 71CECC4321E for ; Sun, 4 Dec 2022 07:53:42 +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 6FB95173B; Sun, 4 Dec 2022 08:52:50 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 6FB95173B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1670140420; bh=NKKmhmP/FcB4EEQwBs0jwdjU+pvAZui6Goo7Bv8cheo=; h=From:Date:Subject:To:Cc:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=j3Bv2CBDo5azxig+CclevDReXsfNXHZPlUvDSob3cPElsykCwGNpkH1Cc7LYyRyo7 NqSdZPOKZTv62KixACPogKLYqNfbIKkJcJSs+Xhx0dHWx6nt4XySNyLHhbhaXq22an 7X4YYoBHCNqSzNf8WmthGCHM3bqeXjpw9J3d5TQo= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 47DEBF80155; Sun, 4 Dec 2022 08:52:29 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id A40CFF80155; Sun, 4 Dec 2022 08:52:28 +0100 (CET) Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) (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 5C45DF80155 for ; Sun, 4 Dec 2022 08:52:22 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 5C45DF80155 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="Jw4FnLuJ" Received: by mail-pj1-x1029.google.com with SMTP id t11-20020a17090a024b00b0021932afece4so12064659pje.5 for ; Sat, 03 Dec 2022 23:52:21 -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=Iy74VsRO4WDPI6duqo1jqOxf/w5vgZYHdL8GT2SYMKg=; b=Jw4FnLuJ+jHl0BSAyl3TtY86/dftI5rnmt/qMEW1qO5gY8ZDQk3b57YXQQRFj5oUCz eAgTSCgK4/tmZfi5MGIHXtTlWKXF2GaH/Oxg2FUUm2dAMhP1nvrZ6QP9F/QA2ZaeuvWT pJu/mnQ3o/JPwRqtovDvZXGkSEIIRHlHFVT+p+8skpKD+5tvNAwX+IN4aNU407LjJh4B t7phY5mX+5UIcKWzxtuUUVDMQ1T0dsOouuihhxjqvET5Ecp/4186JcNWijIxk87kyWiv oaLo+RZ2grrBm0K8JibwpwX4TflORxUCM+w/O7s66w3qNDEZhawqTSWypR4dhLdMQzck 5VKQ== 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=Iy74VsRO4WDPI6duqo1jqOxf/w5vgZYHdL8GT2SYMKg=; b=kIlqZT9oeF8ld84rsjzJE30N3VukisBu8bao+P1Ad2kHudkfL/G0ptdslbBj7W6wBe QnysybJdPWPcyMTzl/4EhyhQ1ctYJ6vZ06gks7g9zcBhrQ3DR6cdcmmfya2R3F1UtRkH BLs0BHcE+XKtnQii5RTW7tXy0BXcTPwgXcY3fgCONOs2nCuVDbBj1ftn36A1anKqD61K YBbp5akCTwuhZZ1tHSz62ATI5nHyX8rnGBNzOm3uR02+5f8PcVgx17LFgwB/C6JAyoYp 8Rawpk1UcmP+OH/vH+8V9rv3wQn8a5iS630+5u2kLL+msUPBH8C3UcVQiou8ECzNgT4Y 2grw== X-Gm-Message-State: ANoB5pl4jl29cXRr88cB9FsPbLs3ybs8OoRqS4Zuo2Eu2JNXokyhivOt vs5HXSEvwrWOcbBWM3tQGdM9Nw7fReHU6juK6as= X-Google-Smtp-Source: AA0mqf4zSRaazgQAKjeUr6basv8jmHb6EMNYytiMvHs1gkkIZuSqDhopNiFXwoNfP1YQ/VQOsZt1Tg== X-Received: by 2002:a17:902:9889:b0:186:5f82:3812 with SMTP id s9-20020a170902988900b001865f823812mr67403855plp.51.1670140339513; Sat, 03 Dec 2022 23:52:19 -0800 (PST) Received: from localhost ([121.99.145.49]) by smtp.gmail.com with ESMTPSA id fa13-20020a17090af0cd00b00218abadb6a8sm7160900pjb.49.2022.12.03.23.52.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Dec 2022 23:52:18 -0800 (PST) Message-ID: <638c51b2.170a0220.49853.d549@mx.google.com> From: Daniel Beer Date: Thu, 27 Oct 2022 21:38:38 +1300 Subject: [PATCH v2 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 6e2edf045446..4e38eb7acea1 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) |