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[209.132.180.67]) by mx.google.com with ESMTP id i187-v6si7003432pfb.91.2018.11.11.04.32.21; Sun, 11 Nov 2018 04:32:36 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727805AbeKKWU1 (ORCPT + 99 others); Sun, 11 Nov 2018 17:20:27 -0500 Received: from saturn.retrosnub.co.uk ([46.235.226.198]:55324 "EHLO saturn.retrosnub.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727480AbeKKWU1 (ORCPT ); Sun, 11 Nov 2018 17:20:27 -0500 Received: from archlinux (cpc91196-cmbg18-2-0-cust659.5-4.cable.virginm.net [81.96.234.148]) by saturn.retrosnub.co.uk (Postfix; Retrosnub mail submission) with ESMTPSA id 4B6DD9E776F; Sun, 11 Nov 2018 12:31:55 +0000 (GMT) Date: Sun, 11 Nov 2018 12:31:54 +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: <20181111123154.176ac734@archlinux> In-Reply-To: <20181111122405.23970900@archlinux> References: <3f9ea18864230b2758f86899b9bd1acb020dd176.1541733949.git.nishadkamdar@gmail.com> <20181111122405.23970900@archlinux> 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 Sun, 11 Nov 2018 12:24:05 +0000 Jonathan Cameron wrote: > 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. Actually no it isn't, because I applied the previous version back in October. Please avoid resending patches that have already been applied. It gets very confusing! Jonathan > > 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; >