iio:potentiometer:mcp4531: 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.
Hence drop them from this driver.

Also switch to device_get_match_data() from of_ variant and adjust
headers to reflect the change.

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/20200910173242.621168-9-jic23@kernel.org

diff --git a/drivers/iio/potentiometer/mcp4531.c b/drivers/iio/potentiometer/mcp4531.c
index 95efc4b40514ab9153c9504c9056fe018e4a21e1..c25f84b4a270b14b482aa9916d6cdc8a90b5eac9 100644 (file)
--- a/drivers/iio/potentiometer/mcp4531.c
+++ b/drivers/iio/potentiometer/mcp4531.c
@@ -28,8 +28,8 @@
 #include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/err.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 #include <linux/iio/iio.h>
 
@@ -275,8 +275,6 @@ static const struct i2c_device_id mcp4531_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, mcp4531_id);
 
-#ifdef CONFIG_OF
-
 #define MCP4531_COMPATIBLE(of_compatible, cfg) {       \
                        .compatible = of_compatible,    \
                        .data = &mcp4531_cfg[cfg],      \
@@ -350,7 +348,6 @@ static const struct of_device_id mcp4531_of_match[] = {
        { /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, mcp4531_of_match);
-#endif
 
 static int mcp4531_probe(struct i2c_client *client)
 {
@@ -371,7 +368,7 @@ static int mcp4531_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 = &mcp4531_cfg[i2c_match_id(mcp4531_id, client)->driver_data];
 
@@ -386,7 +383,7 @@ static int mcp4531_probe(struct i2c_client *client)
 static struct i2c_driver mcp4531_driver = {
        .driver = {
                .name   = "mcp4531",
-               .of_match_table = of_match_ptr(mcp4531_of_match),
+               .of_match_table = mcp4531_of_match,
        },
        .probe_new      = mcp4531_probe,
        .id_table       = mcp4531_id,