From patchwork Tue Oct 26 09:38:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Lin X-Patchwork-Id: 12584349 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2E67AC433F5 for ; Tue, 26 Oct 2021 09:41:09 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 51C9561040 for ; Tue, 26 Oct 2021 09:41:08 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 51C9561040 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=nuvoton.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-project.org 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 B387916CA; Tue, 26 Oct 2021 11:40:16 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz B387916CA DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1635241266; bh=6Cd2xQYJz5grk3fy2BrHSJcliiAA4o+gM8jwPwyfhUw=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=AP7yzLv7cGl9s5Kdb8wKzj2gViJq1Q1np3uwwpiMAXOPPcKxAs9tDq1rdAYFK8CB5 emygCR7b1u58NbExSuUYmTsnAnsXo5d6gzEXfoFtuWtQQlGDVbs+kJdTt1vor+qww9 sj9Kpaexa4k74H2MJ6dceNHzPsMUZxDiOc+ZzD6k= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 01DC8F804F3; Tue, 26 Oct 2021 11:39:06 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 145D7F804FA; Tue, 26 Oct 2021 11:39:03 +0200 (CEST) Received: from maillog.nuvoton.com (maillog.nuvoton.com [202.39.227.15]) by alsa1.perex.cz (Postfix) with ESMTP id 26DE9F80269 for ; Tue, 26 Oct 2021 11:38:49 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 26DE9F80269 Received: from NTHCCAS01.nuvoton.com (NTHCCAS01.nuvoton.com [10.1.8.28]) by maillog.nuvoton.com (Postfix) with ESMTP id 10DEC1C810D7; Tue, 26 Oct 2021 17:38:43 +0800 (CST) Received: from NTHCCAS01.nuvoton.com (10.1.8.28) by NTHCCAS01.nuvoton.com (10.1.8.28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Tue, 26 Oct 2021 17:38:42 +0800 Received: from localhost.localdomain (10.11.36.27) by NTHCCAS01.nuvoton.com (10.1.12.25) with Microsoft SMTP Server id 15.1.2176.2 via Frontend Transport; Tue, 26 Oct 2021 17:38:42 +0800 From: David Lin To: Subject: [PATCH 3/3] ASoC: nau8825: add clock management for power saving Date: Tue, 26 Oct 2021 17:38:28 +0800 Message-ID: <20211026093828.4188145-4-CTLIN0@nuvoton.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211026093828.4188145-1-CTLIN0@nuvoton.com> References: <20211026093828.4188145-1-CTLIN0@nuvoton.com> MIME-Version: 1.0 X-NotRedirectTo-PP: TRUE Cc: alsa-devel@alsa-project.org, WTLI@nuvoton.com, SJLIN0@nuvoton.com, KCHSU0@nuvoton.com, lgirdwood@gmail.com, YHCHuang@nuvoton.com, mac.chiang@intel.com, CTLIN0@nuvoton.com 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" Adjust dapm widget to manage clock from power event for power saving. Co-Developed-by: Mac Chiang Signed-off-by: David Lin --- sound/soc/codecs/nau8825.c | 35 +++++++++++++++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index a356f26735bd..eed017d5df4b 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -47,6 +47,7 @@ static int nau8825_configure_sysclk(struct nau8825 *nau8825, int clk_id, unsigned int freq); +static bool nau8825_is_jack_inserted(struct regmap *regmap); struct nau8825_fll { int mclk_src; @@ -981,6 +982,31 @@ static int nau8825_output_dac_event(struct snd_soc_dapm_widget *w, return 0; } +static int system_clock_control(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *k, int event) +{ + struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm); + struct nau8825 *nau8825 = snd_soc_component_get_drvdata(component); + struct regmap *regmap = nau8825->regmap; + + if (SND_SOC_DAPM_EVENT_OFF(event)) { + dev_dbg(nau8825->dev, "system clock control : POWER OFF\n"); + /* Set clock source to disable or internal clock before the + * playback or capture end. Codec needs clock for Jack + * detection and button press if jack inserted; otherwise, + * the clock should be closed. + */ + if (nau8825_is_jack_inserted(regmap)) { + nau8825_configure_sysclk(nau8825, + NAU8825_CLK_INTERNAL, 0); + } else { + nau8825_configure_sysclk(nau8825, NAU8825_CLK_DIS, 0); + } + } + + return 0; +} + static int nau8825_biq_coeff_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { @@ -1094,6 +1120,9 @@ static const struct snd_kcontrol_new nau8825_dacr_mux = static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = { SND_SOC_DAPM_AIF_OUT("AIFTX", "Capture", 0, NAU8825_REG_I2S_PCM_CTRL2, 15, 1), + SND_SOC_DAPM_AIF_IN("AIFRX", "Playback", 0, SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_SUPPLY("System Clock", SND_SOC_NOPM, 0, 0, + system_clock_control, SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_INPUT("MIC"), SND_SOC_DAPM_MICBIAS("MICBIAS", NAU8825_REG_MIC_BIAS, 8, 0), @@ -1182,9 +1211,11 @@ static const struct snd_soc_dapm_route nau8825_dapm_routes[] = { {"ADC", NULL, "ADC Clock"}, {"ADC", NULL, "ADC Power"}, {"AIFTX", NULL, "ADC"}, + {"AIFTX", NULL, "System Clock"}, - {"DDACL", NULL, "Playback"}, - {"DDACR", NULL, "Playback"}, + {"AIFRX", NULL, "System Clock"}, + {"DDACL", NULL, "AIFRX"}, + {"DDACR", NULL, "AIFRX"}, {"DDACL", NULL, "DDAC Clock"}, {"DDACR", NULL, "DDAC Clock"}, {"DACL Mux", "DACL", "DDACL"},