linux-kernel - [PATCH v3] iio: light: tsl2563 change of_property_read to device_property

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Message-ID: <20201018144338.GA218707@ubuntu>
Date:   Sun, 18 Oct 2020 20:13:38 +0530
From:   Vaishnav M A <vaishnav@...gleboard.org>
To:     jic23@...nel.org, knaack.h@....de, lars@...afoo.de,
        nish.malpani25@...il.com, alexandru.ardelean@...log.com,
        matt.ranostay@...sulko.com, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     jkridner@...gleboard.org, drew@...gleboard.org,
        robertcnelson@...gleboard.org, rajkovic@...roe.com,
        vaishnav@...gleboard.org
Subject: [PATCH v3] iio: light: tsl2563 change of_property_read to
 device_property_read

Replace of_property_read_u32() with device_property_read_u32,
when reading the amstaos,cover-comp-gain.This opens up the
possibility of passing the properties during platform instantiation
of the device by a suitable populated struct property_entry.
Additionally a minor change to logic is added to remove the
of_node present check.

Signed-off-by: Vaishnav M A <vaishnav@...gleboard.org>
---
 v3:
        -modify commit message for readability, mention minor logic change
        -include  mod_devicetable.h and property.h headers
 v2:
        -fix commit message
 drivers/iio/light/tsl2563.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/iio/light/tsl2563.c b/drivers/iio/light/tsl2563.c
index abc8d7db8dc1..5bf2bfbc5379 100644
--- a/drivers/iio/light/tsl2563.c
+++ b/drivers/iio/light/tsl2563.c
@@ -12,6 +12,8 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
@@ -703,7 +705,6 @@ static int tsl2563_probe(struct i2c_client *client,
 	struct iio_dev *indio_dev;
 	struct tsl2563_chip *chip;
 	struct tsl2563_platform_data *pdata = client->dev.platform_data;
-	struct device_node *np = client->dev.of_node;
 	int err = 0;
 	u8 id = 0;
 
@@ -738,13 +739,14 @@ static int tsl2563_probe(struct i2c_client *client,
 	chip->calib0 = tsl2563_calib_from_sysfs(CALIB_BASE_SYSFS);
 	chip->calib1 = tsl2563_calib_from_sysfs(CALIB_BASE_SYSFS);
 
-	if (pdata)
+	if (pdata) {
 		chip->cover_comp_gain = pdata->cover_comp_gain;
-	else if (np)
-		of_property_read_u32(np, "amstaos,cover-comp-gain",
-				     &chip->cover_comp_gain);
-	else
-		chip->cover_comp_gain = 1;
+	} else {
+		err = device_property_read_u32(&client->dev, "amstaos,cover-comp-gain",
+					       &chip->cover_comp_gain);
+		if (err)
+			chip->cover_comp_gain = 1;
+	}
 
 	dev_info(&client->dev, "model %d, rev. %d\n", id >> 4, id & 0x0f);
 	indio_dev->name = client->name;
-- 
2.25.1