[PATCH v4] iio:light:tsl2563 use generic fw accessors

[Vaishnav M A]

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 in logic is added to remove the
of_node present check.

Signed-off-by: Vaishnav M A <vaish...@beagleboard.org>
---
 v4:
        -update commit message, fix punctuation.
        -update to a shorter commit title, used for similar changes
         within the subsystem, like in 00fa493b9989
         ("iio:proximity:as3935: Drop of_match_ptr and use generic fw 
accessors")
 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