From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CFEB2C06510 for ; Tue, 2 Jul 2019 12:33:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A4350208C4 for ; Tue, 2 Jul 2019 12:33:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562070789; bh=PHhEskV48bPJWKtOyFpocp2DsM4e4kNx7urF/A6wstk=; h=Subject:To:From:Date:List-ID:From; b=f6FCy0bcepnMkZtXJhlNZ5Jj5iIsprXXQlIiBLaFQdgW7ivo1ty39/xoX8ds8Tz6q b0IftmAiaqZB8tlcUvgVmD4mmbZhtre/PgHrTydNKh4EuF5uqBN+L/wimcrfDwQtGd l9COBdfePyuMM5f34TrAHF8zStSluo3ZxOzq3tfA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726591AbfGBMdJ (ORCPT ); Tue, 2 Jul 2019 08:33:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:52422 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726455AbfGBMdJ (ORCPT ); Tue, 2 Jul 2019 08:33:09 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C2EBC205F4; Tue, 2 Jul 2019 12:33:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1562070788; bh=PHhEskV48bPJWKtOyFpocp2DsM4e4kNx7urF/A6wstk=; h=Subject:To:From:Date:From; b=bujt7uo5ZelCmff3U4EUcp6LppTBQg9cjJHIIASzQuH2g3Iu44bSSbNEOYT8MKx96 d+/LaFP+k7fLF0SufAvmxpFopadqLgBvXXLhf8556xTKQYdifeKxynMwxbaCyAX0kU KxaeFT7MaH17xHthq4uJpb/HIpM6rMU7949O6Ypk= Subject: patch "iio: adc: stm32-adc: add missing vdda-supply" added to staging-next To: fabrice.gasnier@st.com, Jonathan.Cameron@huawei.com, Stable@vger.kernel.org From: Date: Tue, 02 Jul 2019 14:29:31 +0200 Message-ID: <1562070571200101@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org This is a note to let you know that I've just added the patch titled iio: adc: stm32-adc: add missing vdda-supply to my staging git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git in the staging-next branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will also be merged in the next major kernel release during the merge window. If you have any questions about this process, please let me know. >From 7685010fca2ba0284f31fd1380df3cffc96d847e Mon Sep 17 00:00:00 2001 From: Fabrice Gasnier Date: Wed, 19 Jun 2019 14:29:55 +0200 Subject: iio: adc: stm32-adc: add missing vdda-supply Add missing vdda-supply, analog power supply, to STM32 ADC. When vdda is an independent supply, it needs to be properly turned on or off to supply the ADC. Signed-off-by: Fabrice Gasnier Fixes: 1add69880240 ("iio: adc: Add support for STM32 ADC core"). Cc: Signed-off-by: Jonathan Cameron --- drivers/iio/adc/stm32-adc-core.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c index 2327ec18b40c..1f7ce5186dfc 100644 --- a/drivers/iio/adc/stm32-adc-core.c +++ b/drivers/iio/adc/stm32-adc-core.c @@ -87,6 +87,7 @@ struct stm32_adc_priv_cfg { * @domain: irq domain reference * @aclk: clock reference for the analog circuitry * @bclk: bus clock common for all ADCs, depends on part used + * @vdda: vdda analog supply reference * @vref: regulator reference * @cfg: compatible configuration data * @common: common data for all ADC instances @@ -97,6 +98,7 @@ struct stm32_adc_priv { struct irq_domain *domain; struct clk *aclk; struct clk *bclk; + struct regulator *vdda; struct regulator *vref; const struct stm32_adc_priv_cfg *cfg; struct stm32_adc_common common; @@ -394,10 +396,16 @@ static int stm32_adc_core_hw_start(struct device *dev) struct stm32_adc_priv *priv = to_stm32_adc_priv(common); int ret; + ret = regulator_enable(priv->vdda); + if (ret < 0) { + dev_err(dev, "vdda enable failed %d\n", ret); + return ret; + } + ret = regulator_enable(priv->vref); if (ret < 0) { dev_err(dev, "vref enable failed\n"); - return ret; + goto err_vdda_disable; } if (priv->bclk) { @@ -425,6 +433,8 @@ static int stm32_adc_core_hw_start(struct device *dev) clk_disable_unprepare(priv->bclk); err_regulator_disable: regulator_disable(priv->vref); +err_vdda_disable: + regulator_disable(priv->vdda); return ret; } @@ -441,6 +451,7 @@ static void stm32_adc_core_hw_stop(struct device *dev) if (priv->bclk) clk_disable_unprepare(priv->bclk); regulator_disable(priv->vref); + regulator_disable(priv->vdda); } static int stm32_adc_probe(struct platform_device *pdev) @@ -468,6 +479,14 @@ static int stm32_adc_probe(struct platform_device *pdev) return PTR_ERR(priv->common.base); priv->common.phys_base = res->start; + priv->vdda = devm_regulator_get(&pdev->dev, "vdda"); + if (IS_ERR(priv->vdda)) { + ret = PTR_ERR(priv->vdda); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "vdda get failed, %d\n", ret); + return ret; + } + priv->vref = devm_regulator_get(&pdev->dev, "vref"); if (IS_ERR(priv->vref)) { ret = PTR_ERR(priv->vref); -- 2.22.0