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authorJavier Martinez Canillas <javier@osg.samsung.com>2017-02-24 10:13:08 -0300
committerGuenter Roeck <linux@roeck-us.net>2017-04-02 07:01:53 -0700
commit02331c3a1a8ddf8b47bb190294138d2a76e4b8d0 (patch)
tree86f6904efadb310fd7f18d8d748a22348508b6f5 /drivers/hwmon
parent8881a19187e452e72e8b1782342b2687e4c9b21d (diff)
downloadlinux-02331c3a1a8ddf8b47bb190294138d2a76e4b8d0.tar.bz2
hwmon: (ucd9200) Add OF device ID table
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>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/pmbus/ucd9200.c48
1 files changed, 47 insertions, 1 deletions
diff --git a/drivers/hwmon/pmbus/ucd9200.c b/drivers/hwmon/pmbus/ucd9200.c
index 033d6aca47d3..a8712c5ded4e 100644
--- a/drivers/hwmon/pmbus/ucd9200.c
+++ b/drivers/hwmon/pmbus/ucd9200.c
@@ -20,6 +20,7 @@
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/of_device.h>
#include <linux/init.h>
#include <linux/err.h>
#include <linux/slab.h>
@@ -46,12 +47,50 @@ static const struct i2c_device_id ucd9200_id[] = {
};
MODULE_DEVICE_TABLE(i2c, ucd9200_id);
+static const struct of_device_id ucd9200_of_match[] = {
+ {
+ .compatible = "ti,cd9200",
+ .data = (void *)ucd9200
+ },
+ {
+ .compatible = "ti,cd9220",
+ .data = (void *)ucd9220
+ },
+ {
+ .compatible = "ti,cd9222",
+ .data = (void *)ucd9222
+ },
+ {
+ .compatible = "ti,cd9224",
+ .data = (void *)ucd9224
+ },
+ {
+ .compatible = "ti,cd9240",
+ .data = (void *)ucd9240
+ },
+ {
+ .compatible = "ti,cd9244",
+ .data = (void *)ucd9244
+ },
+ {
+ .compatible = "ti,cd9246",
+ .data = (void *)ucd9246
+ },
+ {
+ .compatible = "ti,cd9248",
+ .data = (void *)ucd9248
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, ucd9200_of_match);
+
static int ucd9200_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
u8 block_buffer[I2C_SMBUS_BLOCK_MAX + 1];
struct pmbus_driver_info *info;
const struct i2c_device_id *mid;
+ enum chips chip;
int i, j, ret;
if (!i2c_check_functionality(client->adapter,
@@ -76,7 +115,13 @@ static int ucd9200_probe(struct i2c_client *client,
dev_err(&client->dev, "Unsupported device\n");
return -ENODEV;
}
- if (id->driver_data != ucd9200 && id->driver_data != mid->driver_data)
+
+ if (client->dev.of_node)
+ chip = (enum chips)of_device_get_match_data(&client->dev);
+ else
+ chip = id->driver_data;
+
+ if (chip != ucd9200 && chip != mid->driver_data)
dev_notice(&client->dev,
"Device mismatch: Configured %s, detected %s\n",
id->name, mid->name);
@@ -167,6 +212,7 @@ static int ucd9200_probe(struct i2c_client *client,
static struct i2c_driver ucd9200_driver = {
.driver = {
.name = "ucd9200",
+ .of_match_table = of_match_ptr(ucd9200_of_match),
},
.probe = ucd9200_probe,
.remove = pmbus_do_remove,