iio:potentiometer:mcp4018: Drop of_match_ptr and CONFIG_OF protections.

These prevent use of this driver with ACPI via PRP0001 and are
an example of an anti pattern I'm trying to remove from IIO.
Also use device_get_match_data() rather than devicetree only version.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: Peter Rosin <peda@axentia.se>
Link: https://lore.kernel.org/r/20200910173242.621168-7-jic23@kernel.org

diff --git a/drivers/iio/potentiometer/mcp4018.c b/drivers/iio/potentiometer/mcp4018.c
index fd0579a..c0e171f 100644 (file)
--- a/drivers/iio/potentiometer/mcp4018.c
+++ b/drivers/iio/potentiometer/mcp4018.c
@@ -16,8 +16,8 @@
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 #define MCP4018_WIPER_MAX 127
 
@@ -116,8 +116,6 @@ static const struct i2c_device_id mcp4018_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, mcp4018_id);
 
-#ifdef CONFIG_OF
-
 #define MCP4018_COMPATIBLE(of_compatible, cfg) {       \
        .compatible = of_compatible,                    \
        .data = &mcp4018_cfg[cfg],                      \
@@ -140,8 +138,6 @@ static const struct of_device_id mcp4018_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, mcp4018_of_match);
 
-#endif
-
 static int mcp4018_probe(struct i2c_client *client)
 {
        struct device *dev = &client->dev;
@@ -161,7 +157,7 @@ static int mcp4018_probe(struct i2c_client *client)
        i2c_set_clientdata(client, indio_dev);
        data->client = client;
 
-       data->cfg = of_device_get_match_data(dev);
+       data->cfg = device_get_match_data(dev);
        if (!data->cfg)
                data->cfg = &mcp4018_cfg[i2c_match_id(mcp4018_id, client)->driver_data];
 
@@ -176,7 +172,7 @@ static int mcp4018_probe(struct i2c_client *client)
 static struct i2c_driver mcp4018_driver = {
        .driver = {
                .name   = "mcp4018",
-               .of_match_table = of_match_ptr(mcp4018_of_match),
+               .of_match_table = mcp4018_of_match,
        },
        .probe_new      = mcp4018_probe,
        .id_table       = mcp4018_id,