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=-7.7 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 7B4CAC43441 for ; Sun, 11 Nov 2018 12:24:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3619921104 for ; Sun, 11 Nov 2018 12:24:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="oiw8epLb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3619921104 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728004AbeKKWMh (ORCPT ); Sun, 11 Nov 2018 17:12:37 -0500 Received: from mail.kernel.org ([198.145.29.99]:53074 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727480AbeKKWMh (ORCPT ); Sun, 11 Nov 2018 17:12:37 -0500 Received: from archlinux (cpc91196-cmbg18-2-0-cust659.5-4.cable.virginm.net [81.96.234.148]) (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 8983F20866; Sun, 11 Nov 2018 12:24:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1541939050; bh=jtg8OiaCAuSJXkSKarwnQwOp8JasS74PDpqx7r9GUSk=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=oiw8epLbzPsBTbQhiNL3E8NbOn7/TMPaTo6NF4xMdGSwI98LtHOPx9EjV47c6ANks 3E3OfYcP8goAer2Q1h5qcJX+bfFMn2klgwMB5f1O9u8tUbUn7sXZD3mVrcIM72CD3j 2x+rK0GFZlr6xlD4xUe2wN+u5si7b0fl5oNU5iY8= Date: Sun, 11 Nov 2018 12:24:05 +0000 From: Jonathan Cameron To: Nishad Kamdar Cc: Lars-Peter Clausen , Michael Hennerich , Hartmut Knaack , Peter Meerwald-Stadler , Greg Kroah-Hartman , linux-iio@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 1/4] staging: iio: ad7816: Switch to the gpio descriptor interface Message-ID: <20181111122405.23970900@archlinux> In-Reply-To: <3f9ea18864230b2758f86899b9bd1acb020dd176.1541733949.git.nishadkamdar@gmail.com> References: <3f9ea18864230b2758f86899b9bd1acb020dd176.1541733949.git.nishadkamdar@gmail.com> X-Mailer: Claws Mail 3.17.1 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 9 Nov 2018 13:05:17 +0530 Nishad Kamdar wrote: > Use the gpiod interface for rdwr_pin, convert_pin and busy_pin > instead of the deprecated old non-descriptor interface. > > Signed-off-by: Nishad Kamdar Applied to the togreg branch of iio.git and pushed out as testing for the autobuilders to play with it. Thanks, Jonathan > --- > drivers/staging/iio/adc/ad7816.c | 80 ++++++++++++++------------------ > 1 file changed, 34 insertions(+), 46 deletions(-) > > diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c > index bf76a8620bdb..12c4e0ab4713 100644 > --- a/drivers/staging/iio/adc/ad7816.c > +++ b/drivers/staging/iio/adc/ad7816.c > @@ -7,7 +7,7 @@ > */ > > #include > -#include > +#include > #include > #include > #include > @@ -44,9 +44,9 @@ > > struct ad7816_chip_info { > struct spi_device *spi_dev; > - u16 rdwr_pin; > - u16 convert_pin; > - u16 busy_pin; > + struct gpio_desc *rdwr_pin; > + struct gpio_desc *convert_pin; > + struct gpio_desc *busy_pin; > u8 oti_data[AD7816_CS_MAX + 1]; > u8 channel_id; /* 0 always be temperature */ > u8 mode; > @@ -61,28 +61,28 @@ static int ad7816_spi_read(struct ad7816_chip_info *chip, u16 *data) > int ret = 0; > __be16 buf; > > - gpio_set_value(chip->rdwr_pin, 1); > - gpio_set_value(chip->rdwr_pin, 0); > + gpiod_set_value(chip->rdwr_pin, 1); > + gpiod_set_value(chip->rdwr_pin, 0); > ret = spi_write(spi_dev, &chip->channel_id, sizeof(chip->channel_id)); > if (ret < 0) { > dev_err(&spi_dev->dev, "SPI channel setting error\n"); > return ret; > } > - gpio_set_value(chip->rdwr_pin, 1); > + gpiod_set_value(chip->rdwr_pin, 1); > > if (chip->mode == AD7816_PD) { /* operating mode 2 */ > - gpio_set_value(chip->convert_pin, 1); > - gpio_set_value(chip->convert_pin, 0); > + gpiod_set_value(chip->convert_pin, 1); > + gpiod_set_value(chip->convert_pin, 0); > } else { /* operating mode 1 */ > - gpio_set_value(chip->convert_pin, 0); > - gpio_set_value(chip->convert_pin, 1); > + gpiod_set_value(chip->convert_pin, 0); > + gpiod_set_value(chip->convert_pin, 1); > } > > - while (gpio_get_value(chip->busy_pin)) > + while (gpiod_get_value(chip->busy_pin)) > cpu_relax(); > > - gpio_set_value(chip->rdwr_pin, 0); > - gpio_set_value(chip->rdwr_pin, 1); > + gpiod_set_value(chip->rdwr_pin, 0); > + gpiod_set_value(chip->rdwr_pin, 1); > ret = spi_read(spi_dev, &buf, sizeof(*data)); > if (ret < 0) { > dev_err(&spi_dev->dev, "SPI data read error\n"); > @@ -99,8 +99,8 @@ static int ad7816_spi_write(struct ad7816_chip_info *chip, u8 data) > struct spi_device *spi_dev = chip->spi_dev; > int ret = 0; > > - gpio_set_value(chip->rdwr_pin, 1); > - gpio_set_value(chip->rdwr_pin, 0); > + gpiod_set_value(chip->rdwr_pin, 1); > + gpiod_set_value(chip->rdwr_pin, 0); > ret = spi_write(spi_dev, &data, sizeof(data)); > if (ret < 0) > dev_err(&spi_dev->dev, "SPI oti data write error\n"); > @@ -129,10 +129,10 @@ static ssize_t ad7816_store_mode(struct device *dev, > struct ad7816_chip_info *chip = iio_priv(indio_dev); > > if (strcmp(buf, "full")) { > - gpio_set_value(chip->rdwr_pin, 1); > + gpiod_set_value(chip->rdwr_pin, 1); > chip->mode = AD7816_FULL; > } else { > - gpio_set_value(chip->rdwr_pin, 0); > + gpiod_set_value(chip->rdwr_pin, 0); > chip->mode = AD7816_PD; > } > > @@ -345,15 +345,9 @@ static int ad7816_probe(struct spi_device *spi_dev) > { > struct ad7816_chip_info *chip; > struct iio_dev *indio_dev; > - unsigned short *pins = dev_get_platdata(&spi_dev->dev); > int ret = 0; > int i; > > - if (!pins) { > - dev_err(&spi_dev->dev, "No necessary GPIO platform data.\n"); > - return -EINVAL; > - } > - > indio_dev = devm_iio_device_alloc(&spi_dev->dev, sizeof(*chip)); > if (!indio_dev) > return -ENOMEM; > @@ -364,34 +358,28 @@ static int ad7816_probe(struct spi_device *spi_dev) > chip->spi_dev = spi_dev; > for (i = 0; i <= AD7816_CS_MAX; i++) > chip->oti_data[i] = 203; > - chip->rdwr_pin = pins[0]; > - chip->convert_pin = pins[1]; > - chip->busy_pin = pins[2]; > - > - ret = devm_gpio_request(&spi_dev->dev, chip->rdwr_pin, > - spi_get_device_id(spi_dev)->name); > - if (ret) { > - dev_err(&spi_dev->dev, "Fail to request rdwr gpio PIN %d.\n", > - chip->rdwr_pin); > + > + chip->rdwr_pin = devm_gpiod_get(&spi_dev->dev, "rdwr", GPIOD_IN); > + if (IS_ERR(chip->rdwr_pin)) { > + ret = PTR_ERR(chip->rdwr_pin); > + dev_err(&spi_dev->dev, "Failed to request rdwr GPIO: %d\n", > + ret); > return ret; > } > - gpio_direction_input(chip->rdwr_pin); > - ret = devm_gpio_request(&spi_dev->dev, chip->convert_pin, > - spi_get_device_id(spi_dev)->name); > - if (ret) { > - dev_err(&spi_dev->dev, "Fail to request convert gpio PIN %d.\n", > - chip->convert_pin); > + chip->convert_pin = devm_gpiod_get(&spi_dev->dev, "convert", GPIOD_IN); > + if (IS_ERR(chip->convert_pin)) { > + ret = PTR_ERR(chip->convert_pin); > + dev_err(&spi_dev->dev, "Failed to request convert GPIO: %d\n", > + ret); > return ret; > } > - gpio_direction_input(chip->convert_pin); > - ret = devm_gpio_request(&spi_dev->dev, chip->busy_pin, > - spi_get_device_id(spi_dev)->name); > - if (ret) { > - dev_err(&spi_dev->dev, "Fail to request busy gpio PIN %d.\n", > - chip->busy_pin); > + chip->busy_pin = devm_gpiod_get(&spi_dev->dev, "busy", GPIOD_IN); > + if (IS_ERR(chip->busy_pin)) { > + ret = PTR_ERR(chip->busy_pin); > + dev_err(&spi_dev->dev, "Failed to request busy GPIO: %d\n", > + ret); > return ret; > } > - gpio_direction_input(chip->busy_pin); > > indio_dev->name = spi_get_device_id(spi_dev)->name; > indio_dev->dev.parent = &spi_dev->dev;