From patchwork Thu Aug 31 08:00:45 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Peter Ujfalusi X-Patchwork-Id: 9931443 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4B8176022E for ; Thu, 31 Aug 2017 08:00:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2DDE526E78 for ; Thu, 31 Aug 2017 08:00:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 22EE028887; Thu, 31 Aug 2017 08:00:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_NONE,T_DKIM_INVALID autolearn=no version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3B2F126E78 for ; Thu, 31 Aug 2017 08:00:34 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 92859267269; Thu, 31 Aug 2017 10:00:32 +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 BE36126726A; Thu, 31 Aug 2017 10:00:31 +0200 (CEST) Received: from lelnx194.ext.ti.com (lelnx194.ext.ti.com [198.47.27.80]) by alsa0.perex.cz (Postfix) with ESMTP id 01530267256 for ; Thu, 31 Aug 2017 10:00:25 +0200 (CEST) Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by lelnx194.ext.ti.com (8.15.1/8.15.1) with ESMTP id v7V80NuH017968; Thu, 31 Aug 2017 03:00:23 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ti.com; s=ti-com-17Q1; t=1504166423; bh=IpWocb0wyKnAq7Yrj1A0lAYT/qeItil6eb2olgJHQdA=; h=From:To:CC:Subject:Date; b=Htb1u+hp2v331EVnzxrBwxYnofzuXYHq7jNNFuHYsgO1j6E4gHDV4NC29GIAL9SqW 2344aSo2v7IuTRriTGCZsSEFnKoqVX8AUfVavhB0fl4g3YJ0qQUyBWLhlX7Qxqi4yk Bub2xE++L6noTopdHUtZNaHw8wOilA8tgdBRMxBo= Received: from DFLE100.ent.ti.com (dfle100.ent.ti.com [10.64.6.21]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id v7V80Ncr013056; Thu, 31 Aug 2017 03:00:23 -0500 Received: from DFLE108.ent.ti.com (10.64.6.29) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.1.845.34; Thu, 31 Aug 2017 03:00:23 -0500 Received: from dflp33.itg.ti.com (10.64.6.16) by DFLE108.ent.ti.com (10.64.6.29) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.845.34 via Frontend Transport; Thu, 31 Aug 2017 03:00:23 -0500 Received: from feketebors.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id v7V80Lhw002646; Thu, 31 Aug 2017 03:00:21 -0500 From: Peter Ujfalusi To: , , Date: Thu, 31 Aug 2017 11:00:45 +0300 Message-ID: <20170831080045.28999-1-peter.ujfalusi@ti.com> X-Mailer: git-send-email 2.14.1 MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Cc: devicetree@vger.kernel.org, alsa-devel@alsa-project.org Subject: [alsa-devel] [PATCH] ASoC: tlv320aic3x: Support for OCMV configuration 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: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP In aic3x class of devices Output Common-Mode Voltage can be configured for better analog performance. The OCMV value depends on the Analog and digital domain power supply voltage configuration. The default OCMV of 1.35V gives best performance when AVDD is around 2.7V and DVDD is 1.525V, but for higher AVDD/DVDD higher OCMV setting is recommended. The patch gives an automatic way of guessing the best OCMV which can be overwritten by a DT parameter if needed. Signed-off-by: Peter Ujfalusi --- .../devicetree/bindings/sound/tlv320aic3x.txt | 5 +++ sound/soc/codecs/tlv320aic3x.c | 45 ++++++++++++++++++++++ sound/soc/codecs/tlv320aic3x.h | 8 ++++ 3 files changed, 58 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt index 47a213c411ce..ba5b45c483f5 100644 --- a/Documentation/devicetree/bindings/sound/tlv320aic3x.txt +++ b/Documentation/devicetree/bindings/sound/tlv320aic3x.txt @@ -26,6 +26,11 @@ Optional properties: 3 - MICBIAS output is connected to AVDD, If this node is not mentioned or if the value is incorrect, then MicBias is powered down. +- ai3x-ocmv - Output Common-Mode Voltage selection: + 0 - 1.35V, + 1 - 1.5V, + 2 - 1.65V, + 3 - 1.8V - AVDD-supply, IOVDD-supply, DRVDD-supply, DVDD-supply : power supplies for the device as covered in Documentation/devicetree/bindings/regulator/regulator.txt diff --git a/sound/soc/codecs/tlv320aic3x.c b/sound/soc/codecs/tlv320aic3x.c index 405f4602888a..4f24d7552968 100644 --- a/sound/soc/codecs/tlv320aic3x.c +++ b/sound/soc/codecs/tlv320aic3x.c @@ -93,6 +93,8 @@ struct aic3x_priv { /* Selects the micbias voltage */ enum aic3x_micbias_voltage micbias_vg; + /* Output Common-Mode Voltage */ + u8 ocmv; }; static const struct reg_default aic3x_reg[] = { @@ -1572,6 +1574,10 @@ static int aic3x_init(struct snd_soc_codec *codec) break; } + /* Output common-mode voltage = 1.5 V */ + snd_soc_update_bits(codec, HPOUT_SC, HPOUT_SC_OCMV_MASK, + aic3x->ocmv << HPOUT_SC_OCMV_SHIFT); + return 0; } @@ -1699,6 +1705,43 @@ static const struct snd_soc_codec_driver soc_codec_dev_aic3x = { }, }; +static void aic3x_configure_ocmv(struct i2c_client *client) +{ + struct device_node *np = client->dev.of_node; + struct aic3x_priv *aic3x = i2c_get_clientdata(client); + u32 value; + int dvdd, avdd; + + if (np && !of_property_read_u32(np, "ai3x-ocmv", &value)) { + /* OCMV setting is forced by DT */ + if (value <= 3) { + aic3x->ocmv = value; + return; + } + } + + dvdd = regulator_get_voltage(aic3x->supplies[1].consumer); + avdd = regulator_get_voltage(aic3x->supplies[2].consumer); + + if (avdd > 3600000 || dvdd > 1950000) { + dev_warn(&client->dev, + "Too high supply voltage(s) AVDD: %d, DVDD: %d\n", + avdd, dvdd); + } else if (avdd == 3600000 && dvdd == 1950000) { + aic3x->ocmv = HPOUT_SC_OCMV_1_8V; + } else if (avdd > 3300000 && dvdd > 1800000) { + aic3x->ocmv = HPOUT_SC_OCMV_1_65V; + } else if (avdd > 3000000 && dvdd > 1650000) { + aic3x->ocmv = HPOUT_SC_OCMV_1_5V; + } else if (avdd > 2700000 && dvdd > 1525000) { + aic3x->ocmv = HPOUT_SC_OCMV_1_35V; + } else { + dev_warn(&client->dev, + "Invalid supply voltage(s) AVDD: %d, DVDD: %d\n", + avdd, dvdd); + } +} + /* * AIC3X 2 wire address can be up to 4 devices with device addresses * 0x18, 0x19, 0x1A, 0x1B @@ -1816,6 +1859,8 @@ static int aic3x_i2c_probe(struct i2c_client *i2c, goto err_gpio; } + aic3x_configure_ocmv(i2c); + if (aic3x->model == AIC3X_MODEL_3007) { ret = regmap_register_patch(aic3x->regmap, aic3007_class_d, ARRAY_SIZE(aic3007_class_d)); diff --git a/sound/soc/codecs/tlv320aic3x.h b/sound/soc/codecs/tlv320aic3x.h index 89fa692df206..34c35196aa0d 100644 --- a/sound/soc/codecs/tlv320aic3x.h +++ b/sound/soc/codecs/tlv320aic3x.h @@ -243,6 +243,14 @@ #define MICBIAS_LEVEL_SHIFT (6) #define MICBIAS_LEVEL_MASK (3 << 6) +/* HPOUT_SC */ +#define HPOUT_SC_OCMV_MASK (3 << 6) +#define HPOUT_SC_OCMV_SHIFT (6) +#define HPOUT_SC_OCMV_1_35V 0 +#define HPOUT_SC_OCMV_1_5V 1 +#define HPOUT_SC_OCMV_1_65V 2 +#define HPOUT_SC_OCMV_1_8V 3 + /* headset detection / button API */ /* The AIC3x supports detection of stereo headsets (GND + left + right signal)