From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f177.google.com (mail-pl1-f177.google.com [209.85.214.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 63F2423278D for ; Mon, 3 Mar 2025 22:06:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.177 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741039617; cv=none; b=jI7QdwO/wahfu2Xq4pJviq8/RZ9XQzhu6nc2N+Ja4q5kknt/pRFAzzqqweiaE6B6NhZtMFK+575VihCuf5guv+WER2uBhBDhE2XT6qSegCqDGKY0kHHACVEDyC3gZNr4eeMfPOi71yzO+Re3TMnxxG4SUN55hTm6fRN//9Vqf5k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1741039617; c=relaxed/simple; bh=JqxhaPx/4PkOgVkCLHhMzASh2FO9a3L/0EsE1pIt20Q=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=tYVLgVm8QK4vgwoOuG5htMCUWzodexoNgOxtwiutaPGLyFuvuYLBta4mFsupfv9LcZEy2wy/+kmC2q5h5PznvMzPQHliKyd6H7YW5z4evJyyMJfY2a99IGtWR488A/1IWUkIyDAyqWstLijInE+Ue+RwObwFDte769/MQ32XcvM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=jvV8fElf; arc=none smtp.client-ip=209.85.214.177 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="jvV8fElf" Received: by mail-pl1-f177.google.com with SMTP id d9443c01a7336-22349dc31bcso86680965ad.3 for ; Mon, 03 Mar 2025 14:06:56 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1741039616; x=1741644416; darn=lists.linux.dev; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=nyrPi5HAkeHZcWwEBF6xTNbTlSUohW8oencgE4qGFYo=; b=jvV8fElf9uoqLVjK+bQOp4lVH/g6W+NXI+vSWh2GCky/MH0Ngb0+4EglbzCxkHCg9A WOF8jDn/YEfS34l1o9xjTs0nQ9YDVM2QTy1UysT3ERWAH4h7JAkQIOadDSqlL7pqUJM6 AP/1LCISpMnwHVkHt2PF1uvKRSwHlH9oQ6deyhVcDq3q40Z1kEkjLXD34icBRCMU/Q61 Y1Y5cIkRo170+i/FdasSR92k/kaICJC5kHsQ842T6FHQf8iYOGP4smO9g0kriaebtdR3 NQsgWnB3eJunz7XQGsDgyJUxOWzEGyS4igYqig57Bv4tASTfUf9Op0eK5A4Rq7AZcc7E LanQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1741039616; x=1741644416; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=nyrPi5HAkeHZcWwEBF6xTNbTlSUohW8oencgE4qGFYo=; b=phTgme8q5y/7Sc400vNILZtvK7bOYQJPJmPcGylfBE4clCOnEpgkxHi3VKXYJY0U5Q /FxZ1jKMg31JKbL+s0+I3fxHLxPv3MdF5Ie3QiD7r05YYYLPfoajYXs9D1mun2nhZnya NWCZgb9wG92yH06nmdlwIzmJQhgnUE+4HLIodhBtKoDMQ8qPVKbA88ZCAs/D06vV7wmO 7JWdBP/EMZoOhHiAzu5AfAPvoQ7Yr5ltmu5lJo+LQFL+S6PAFLIkObFn5WDbZ+80DfpI qk5WUKtsjv/i1Frc9Gk7YFSgBC1ZShTEZuXfAvEba+QJ+QHFl+Fe3VJxR29fu9qV/I3l Cm5A== X-Forwarded-Encrypted: i=1; AJvYcCXxAfJBtJlNC+k1bIa65fgSbdZJE7gAqi1g4LHSp5lAVojhrb7SR/BnQSsg2/uzMfbe2ZGoY1iwvGgtDu/V@lists.linux.dev X-Gm-Message-State: AOJu0YyM1/Ts9xK2/pSLxqMlzbb/AlRHMNVYZG/9HZR+M4lV9LkIHtJO WnyP2g8EL05TXFfhZYemHeJ6x1R2KP+qooACqJa/0bCMhrJwR3sG X-Gm-Gg: ASbGncsZYrLsBYow7l9bRy62FwVKR4nr8svUq4bPdCfk7U0vVGriGNIRJx7MB7sKw2T pFUcfmaeh3ArbpQ4TkRdWBqaxK2Mtj9A1sghDRjvbR3L2RdkO7L6o+QxMZ/wreMGVZSRuCYm6CG 9Zm/qPwzXdieU7Lsey44pRIYemrJ4XIN1AxMFz96VJOc0D56E+2cN80+T/oqT8VBd4ym0Ikv+Sa K916Oh6aMW0piGv1xLlI2iJaueRAih5ZOD+W31OjdwEdwg/welwhUez9mgTULTAq4QR+2QyeZOx 3C2QHMGLziZ9Lyet6MAANrBfHM+yq0hl1GfTR//XUhVp8crKHjtvJ10= X-Google-Smtp-Source: AGHT+IF210btO6rb30eQ+sEDHAyP6Jb2nAg1Js5HWY+VJpxXxEm3Ip9l6khqtgq0M00D4C6JjlL1cA== X-Received: by 2002:a62:f20c:0:b0:736:3184:7fe8 with SMTP id d2e1a72fcca58-73631848087mr13036440b3a.2.1741039615593; Mon, 03 Mar 2025 14:06:55 -0800 (PST) Received: from localhost ([2804:30c:1f21:4300:1cf6:c485:6555:b1c5]) by smtp.gmail.com with UTF8SMTPSA id 41be03b00d2f7-aee7ddf230dsm8757673a12.8.2025.03.03.14.06.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Mar 2025 14:06:54 -0800 (PST) Date: Mon, 3 Mar 2025 19:07:47 -0300 From: Marcelo Schmitt To: Saalim Quadri Cc: jic23@kernel.org, lars@metafoo.de, Michael.Hennerich@analog.com, gregkh@linuxfoundation.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev Subject: Re: [RFC] staging: iio: ad9832: Use devm_regulator_get_enable_read_voltage() Message-ID: References: <20250303200347.23354-1-danascape@gmail.com> Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250303200347.23354-1-danascape@gmail.com> Hello Saalim, On 03/04, Saalim Quadri wrote: > Use devm_regulator_get_enable_read_voltage() to reduce boiler plate > code. > > * Here I am particularly confused about regulator_enable(), part where I should > use devm_regulator_get_enable() to enable avdd supply? I misread the driver yesterday and thought avdd and dvdd regulator voltages were being read, but that is not true. devm_regulator_get_enable() is enough for the cases where the voltage is not read. > * I can resend this as a patch if everything is alright, specifically with > devm_regulator_get_enable() for dvdd > If I'm not missing anything else, you'll probably be using devm_regulator_get_enable() for both avdd and dvdd. And probably ok to update both in a single patch. Regards, Marcelo > Signed-off-by: Saalim Quadri > --- > drivers/staging/iio/frequency/ad9832.c | 37 +++----------------------- > 1 file changed, 4 insertions(+), 33 deletions(-) > > diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c > index 140ee4f9c137..9e7975265454 100644 > --- a/drivers/staging/iio/frequency/ad9832.c > +++ b/drivers/staging/iio/frequency/ad9832.c > @@ -74,8 +74,6 @@ > /** > * struct ad9832_state - driver instance specific data > * @spi: spi_device > - * @avdd: supply regulator for the analog section > - * @dvdd: supply regulator for the digital section > * @mclk: external master clock > * @ctrl_fp: cached frequency/phase control word > * @ctrl_ss: cached sync/selsrc control word > @@ -94,8 +92,6 @@ > > struct ad9832_state { > struct spi_device *spi; > - struct regulator *avdd; > - struct regulator *dvdd; > struct clk *mclk; > unsigned short ctrl_fp; > unsigned short ctrl_ss; > @@ -297,11 +293,6 @@ static const struct iio_info ad9832_info = { > .attrs = &ad9832_attribute_group, > }; > > -static void ad9832_reg_disable(void *reg) > -{ > - regulator_disable(reg); > -} > - > static int ad9832_probe(struct spi_device *spi) > { > struct ad9832_platform_data *pdata = dev_get_platdata(&spi->dev); > @@ -320,33 +311,13 @@ static int ad9832_probe(struct spi_device *spi) > > st = iio_priv(indio_dev); > > - st->avdd = devm_regulator_get(&spi->dev, "avdd"); > - if (IS_ERR(st->avdd)) > - return PTR_ERR(st->avdd); > - > - ret = regulator_enable(st->avdd); > - if (ret) { > - dev_err(&spi->dev, "Failed to enable specified AVDD supply\n"); > - return ret; > - } > - > - ret = devm_add_action_or_reset(&spi->dev, ad9832_reg_disable, st->avdd); > + ret = devm_regulator_get_enable_read_voltage(&spi->dev, "avdd"); > if (ret) > - return ret; > - > - st->dvdd = devm_regulator_get(&spi->dev, "dvdd"); > - if (IS_ERR(st->dvdd)) > - return PTR_ERR(st->dvdd); > + return dev_err_probe(&spi->dev, ret, "failed to get AVDD voltage\n"); > > - ret = regulator_enable(st->dvdd); > - if (ret) { > - dev_err(&spi->dev, "Failed to enable specified DVDD supply\n"); > - return ret; > - } > - > - ret = devm_add_action_or_reset(&spi->dev, ad9832_reg_disable, st->dvdd); > + ret = devm_regulator_get_enable(&spi->dev, "dvdd"); > if (ret) > - return ret; > + return dev_err_probe(&spi->dev, ret, "Failed to enable specified DVDD supply\n"); > > st->mclk = devm_clk_get_enabled(&spi->dev, "mclk"); > if (IS_ERR(st->mclk)) > -- > 2.34.1 > >