linux-kernel - [PATCH] staging: iio: adt7316: Switch to the gpio descriptor interface

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Message-ID: <20181022171418.GA2612@nishad>
Date:   Mon, 22 Oct 2018 22:44:22 +0530
From:   Nishad Kamdar <nishadkamdar@...il.com>
To:     Lars-Peter Clausen <lars@...afoo.de>
Cc:     Slawomir Stepien <sst@...zta.fm>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-iio@...r.kernel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] staging: iio: adt7316: Switch to the gpio descriptor
 interface

Use the gpiod interface instead of the deprecated old non-descriptor
interface for ldac_pin.

Signed-off-by: Nishad Kamdar <nishadkamdar@...il.com>
---
 drivers/staging/iio/addac/adt7316.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c
index 3f22d1088713..94f945ba0097 100644
--- a/drivers/staging/iio/addac/adt7316.c
+++ b/drivers/staging/iio/addac/adt7316.c
@@ -8,7 +8,7 @@
  */
 
 #include <linux/interrupt.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/workqueue.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
@@ -177,7 +177,7 @@
 
 struct adt7316_chip_info {
 	struct adt7316_bus	bus;
-	u16			ldac_pin;
+	struct gpio_desc	*ldac_pin;
 	u16			int_mask;	/* 0x2f */
 	u8			config1;
 	u8			config2;
@@ -950,8 +950,8 @@ static ssize_t adt7316_store_update_DAC(struct device *dev,
 		if (ret)
 			return -EIO;
 	} else {
-		gpio_set_value(chip->ldac_pin, 0);
-		gpio_set_value(chip->ldac_pin, 1);
+		gpiod_set_value(chip->ldac_pin, 0);
+		gpiod_set_value(chip->ldac_pin, 1);
 	}
 
 	return len;
@@ -2120,7 +2120,14 @@ int adt7316_probe(struct device *dev, struct adt7316_bus *bus,
 	else
 		return -ENODEV;
 
-	chip->ldac_pin = adt7316_platform_data[1];
+	chip->ldac_pin = devm_gpiod_get(dev, "ldac", GPIOD_OUT_HIGH);
+	if (IS_ERR(chip->ldac_pin)) {
+		ret = PTR_ERR(chip->ldac_pin);
+		dev_err(dev, "Failed to request ldac GPIO: %d\n",
+			ret);
+		return ret;
+	}
+
 	if (chip->ldac_pin) {
 		chip->config3 |= ADT7316_DA_EN_VIA_DAC_LDCA;
 		if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
-- 
2.17.1