iio: chemical: atlas-ezo-sensor: Make use of device properties

Convert the module to be property provider agnostic and allow
it to be used on non-OF platforms.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220207124204.11658-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/chemical/atlas-ezo-sensor.c b/drivers/iio/chemical/atlas-ezo-sensor.c
index b1bacfe..bbcf5a5 100644 (file)
--- a/drivers/iio/chemical/atlas-ezo-sensor.c
+++ b/drivers/iio/chemical/atlas-ezo-sensor.c
@@ -6,13 +6,15 @@
  * Author: Matt Ranostay <matt.ranostay@konsulko.com>
  */
 
-#include <linux/module.h>
 #include <linux/init.h>
 #include <linux/delay.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/property.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
-#include <linux/of_device.h>
+
 #include <linux/iio/iio.h>
 
 #define ATLAS_EZO_DRV_NAME             "atlas-ezo-sensor"
@@ -33,7 +35,7 @@ struct atlas_ezo_device {
 
 struct atlas_ezo_data {
        struct i2c_client *client;
-       struct atlas_ezo_device *chip;
+       const struct atlas_ezo_device *chip;
 
        /* lock to avoid multiple concurrent read calls */
        struct mutex lock;
@@ -184,17 +186,17 @@ static const struct iio_info atlas_info = {
 };
 
 static const struct i2c_device_id atlas_ezo_id[] = {
-       { "atlas-co2-ezo", ATLAS_CO2_EZO },
-       { "atlas-o2-ezo", ATLAS_O2_EZO },
-       { "atlas-hum-ezo", ATLAS_HUM_EZO },
+       { "atlas-co2-ezo", (kernel_ulong_t)&atlas_ezo_devices[ATLAS_CO2_EZO] },
+       { "atlas-o2-ezo", (kernel_ulong_t)&atlas_ezo_devices[ATLAS_O2_EZO] },
+       { "atlas-hum-ezo", (kernel_ulong_t)&atlas_ezo_devices[ATLAS_HUM_EZO] },
        {}
 };
 MODULE_DEVICE_TABLE(i2c, atlas_ezo_id);
 
 static const struct of_device_id atlas_ezo_dt_ids[] = {
-       { .compatible = "atlas,co2-ezo", .data = (void *)ATLAS_CO2_EZO, },
-       { .compatible = "atlas,o2-ezo", .data = (void *)ATLAS_O2_EZO, },
-       { .compatible = "atlas,hum-ezo", .data = (void *)ATLAS_HUM_EZO, },
+       { .compatible = "atlas,co2-ezo", .data = &atlas_ezo_devices[ATLAS_CO2_EZO], },
+       { .compatible = "atlas,o2-ezo", .data = &atlas_ezo_devices[ATLAS_O2_EZO], },
+       { .compatible = "atlas,hum-ezo", .data = &atlas_ezo_devices[ATLAS_HUM_EZO], },
        {}
 };
 MODULE_DEVICE_TABLE(of, atlas_ezo_dt_ids);
@@ -202,20 +204,20 @@ MODULE_DEVICE_TABLE(of, atlas_ezo_dt_ids);
 static int atlas_ezo_probe(struct i2c_client *client,
                       const struct i2c_device_id *id)
 {
+       const struct atlas_ezo_device *chip;
        struct atlas_ezo_data *data;
-       struct atlas_ezo_device *chip;
-       const struct of_device_id *of_id;
        struct iio_dev *indio_dev;
 
        indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
        if (!indio_dev)
                return -ENOMEM;
 
-       of_id = of_match_device(atlas_ezo_dt_ids, &client->dev);
-       if (!of_id)
-               chip = &atlas_ezo_devices[id->driver_data];
+       if (dev_fwnode(&client->dev))
+               chip = device_get_match_data(&client->dev);
        else
-               chip = &atlas_ezo_devices[(unsigned long)of_id->data];
+               chip = (const struct atlas_ezo_device *)id->driver_data;
+       if (!chip)
+               return -EINVAL;
 
        indio_dev->info = &atlas_info;
        indio_dev->name = ATLAS_EZO_DRV_NAME;