From patchwork Fri May 29 18:56:10 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: yang.a.fang@intel.com X-Patchwork-Id: 6510761 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 91DE9C0020 for ; Fri, 29 May 2015 18:57:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B417B2082A for ; Fri, 29 May 2015 18:57:22 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id 66DAC20822 for ; Fri, 29 May 2015 18:57:21 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id B9C2E266978; Fri, 29 May 2015 20:57:19 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [IPv6:::1]) by alsa0.perex.cz (Postfix) with ESMTP id 3C30426690B; Fri, 29 May 2015 20:57:13 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id 879BD2668BE; Fri, 29 May 2015 20:57:10 +0200 (CEST) Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by alsa0.perex.cz (Postfix) with ESMTP id E81AA2668BE for ; Fri, 29 May 2015 20:57:00 +0200 (CEST) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga101.jf.intel.com with ESMTP; 29 May 2015 11:56:58 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.13,518,1427785200"; d="scan'208";a="717689333" Received: from mocha.sc.intel.com ([143.183.245.87]) by fmsmga001.fm.intel.com with ESMTP; 29 May 2015 11:56:58 -0700 From: yang.a.fang@intel.com To: broonie@kernel.org, lgirdwood@gmail.com Date: Fri, 29 May 2015 11:56:10 -0700 Message-Id: <1432925772-117760-1-git-send-email-yang.a.fang@intel.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1432836048-102175-1-git-send-email-yang.a.fang@intel.com> References: <1432836048-102175-1-git-send-email-yang.a.fang@intel.com> Cc: alsa-devel@alsa-project.org, srinivas.sripathi@intel.com, vinod.koul@intel.com, praveen.k.jain@intel.com, denny.iriawan@intel.com, "Fang, Yang A" , sathyanarayana.nujella@intel.com, kevin.strasser@linux.intel.com, dgreid@chromium.org Subject: [alsa-devel] [PATCH v3 1/3] ASoC: max98090: read micbias from device property X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 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: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP From: "Fang, Yang A" This patch reads max98090 micbias from acpi or dt Signed-off-by: Fang, Yang A --- .../devicetree/bindings/sound/max98090.txt | 6 ++++++ sound/soc/codecs/max98090.c | 13 ++++++++++++- 2 files changed, 18 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/sound/max98090.txt b/Documentation/devicetree/bindings/sound/max98090.txt index aa802a2..4e3be66 100644 --- a/Documentation/devicetree/bindings/sound/max98090.txt +++ b/Documentation/devicetree/bindings/sound/max98090.txt @@ -18,6 +18,12 @@ Optional properties: - maxim,dmic-freq: Frequency at which to clock DMIC +- maxim,micbias: Micbias voltage applies to the analog mic, valid voltages value are: + 0 - 2.2v + 1 - 2.55v + 2 - 2.4v + 3 - 2.8v + Pins on the device (for linking into audio routes): * MIC1 diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c index c230626..679f0a0 100644 --- a/sound/soc/codecs/max98090.c +++ b/sound/soc/codecs/max98090.c @@ -2419,6 +2419,8 @@ static int max98090_probe(struct snd_soc_codec *codec) struct max98090_cdata *cdata; enum max98090_type devtype; int ret = 0; + int err; + unsigned int micbias; dev_dbg(codec->dev, "max98090_probe\n"); @@ -2503,8 +2505,17 @@ static int max98090_probe(struct snd_soc_codec *codec) snd_soc_write(codec, M98090_REG_BIAS_CONTROL, M98090_VCM_MODE_MASK); + err = device_property_read_u32(codec->dev, "maxim,micbias", &micbias); + if (err) { + micbias = M98090_MBVSEL_2V8; + dev_info(codec->dev, "use default 2.8v micbias\n"); + } else if (micbias < M98090_MBVSEL_2V2 || micbias > M98090_MBVSEL_2V8) { + dev_err(codec->dev, "micbias out of range 0x%x\n", micbias); + micbias = M98090_MBVSEL_2V8; + } + snd_soc_update_bits(codec, M98090_REG_MIC_BIAS_VOLTAGE, - M98090_MBVSEL_MASK, M98090_MBVSEL_2V8); + M98090_MBVSEL_MASK, micbias); max98090_add_widgets(codec);