From mboxrd@z Thu Jan 1 00:00:00 1970 From: mpa@pengutronix.de (Markus Pargmann) Date: Fri, 14 Aug 2015 16:11:03 +0200 Subject: [PATCH v3 6/9] gpiolib-sysfs: Show gpio-name in /sys/class/gpio/gpio*/name In-Reply-To: <1439561466-14350-1-git-send-email-mpa@pengutronix.de> References: <1439561466-14350-1-git-send-email-mpa@pengutronix.de> Message-ID: <1439561466-14350-7-git-send-email-mpa@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch adds a sysfs attribute 'name' to gpios that were exported. It exposes the newly added name property of gpio descriptors. Signed-off-by: Markus Pargmann --- drivers/gpio/gpiolib-sysfs.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpio/gpiolib-sysfs.c b/drivers/gpio/gpiolib-sysfs.c index 3e81f28e3aee..2022cfb00aeb 100644 --- a/drivers/gpio/gpiolib-sysfs.c +++ b/drivers/gpio/gpiolib-sysfs.c @@ -139,6 +139,17 @@ static ssize_t value_store(struct device *dev, } static DEVICE_ATTR_RW(value); +static ssize_t name_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct gpiod_data *data = dev_get_drvdata(dev); + struct gpio_desc *desc = data->desc; + + return sprintf(buf, "%s\n", desc->name ? : ""); +} + +static DEVICE_ATTR_RO(name); + static irqreturn_t gpio_sysfs_irq(int irq, void *priv) { struct gpiod_data *data = priv; @@ -377,6 +388,7 @@ static struct attribute *gpio_attrs[] = { &dev_attr_edge.attr, &dev_attr_value.attr, &dev_attr_active_low.attr, + &dev_attr_name.attr, NULL, }; -- 2.4.6