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hwmon: (adt7475) Add OF device ID table

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The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.

But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Javier Martinez Canillas 2017-02-24 10:12:58 -03:00 committed by Guenter Roeck
parent 2d688f1413
commit 4e2496e419
1 changed files with 30 additions and 1 deletions
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31
drivers/hwmon/adt7475.c
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@ -13,6 +13,7 @@
*/
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/i2c.h>
@ -161,6 +162,27 @@ static const struct i2c_device_id adt7475_id[] = {
};
MODULE_DEVICE_TABLE(i2c, adt7475_id);
static const struct of_device_id adt7475_of_match[] = {
{
.compatible = "adi,adt7473",
.data = (void *)adt7473
},
{
.compatible = "adi,adt7475",
.data = (void *)adt7475
},
{
.compatible = "adi,adt7476",
.data = (void *)adt7476
},
{
.compatible = "adi,adt7490",
.data = (void *)adt7490
},
{ },
};
MODULE_DEVICE_TABLE(of, adt7475_of_match);
struct adt7475_data {
struct device *hwmon_dev;
struct mutex lock;
@ -1250,6 +1272,7 @@ static void adt7475_remove_files(struct i2c_client *client,
static int adt7475_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
enum chips chip;
static const char * const names[] = {
[adt7473] = "ADT7473",
[adt7475] = "ADT7475",
@ -1268,8 +1291,13 @@ static int adt7475_probe(struct i2c_client *client,
mutex_init(&data->lock);
i2c_set_clientdata(client, data);
if (client->dev.of_node)
chip = (enum chips)of_device_get_match_data(&client->dev);
else
chip = id->driver_data;
/* Initialize device-specific values */
switch (id->driver_data) {
switch (chip) {
case adt7476:
data->has_voltage = 0x0e; /* in1 to in3 */
revision = adt7475_read(REG_DEVID2) & 0x07;
@ -1428,6 +1456,7 @@ static struct i2c_driver adt7475_driver = {
.class = I2C_CLASS_HWMON,
.driver = {
.name = "adt7475",
.of_match_table = of_match_ptr(adt7475_of_match),
},
.probe = adt7475_probe,
.remove = adt7475_remove,