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hwmon: pmbus: mpq8785: Prepare driver for multiple device support

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Refactor the driver to support multiple Monolithic Power Systems devices.
Introduce chip ID handling based on device tree matching.

No functional changes intended.

Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
Link: https://lore.kernel.org/r/20250511035701.2607947-3-paweldembicki@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Pawel Dembicki 2025-05-11 05:55:45 +02:00 committed by Guenter Roeck
parent e00fe40065
commit 1bc6020dc4
1 changed files with 30 additions and 8 deletions
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38
drivers/hwmon/pmbus/mpq8785.c
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@ -8,6 +8,8 @@
#include <linux/of_device.h>
#include "pmbus.h"
enum chips { mpq8785 };
static int mpq8785_identify(struct i2c_client *client,
struct pmbus_driver_info *info)
{
@ -53,26 +55,46 @@ static struct pmbus_driver_info mpq8785_info = {
PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
.identify = mpq8785_identify,
};
static int mpq8785_probe(struct i2c_client *client)
{
return pmbus_do_probe(client, &mpq8785_info);
};
static const struct i2c_device_id mpq8785_id[] = {
{ "mpq8785" },
{ "mpq8785", mpq8785 },
{ },
};
MODULE_DEVICE_TABLE(i2c, mpq8785_id);
static const struct of_device_id __maybe_unused mpq8785_of_match[] = {
{ .compatible = "mps,mpq8785" },
{ .compatible = "mps,mpq8785", .data = (void *)mpq8785 },
{}
};
MODULE_DEVICE_TABLE(of, mpq8785_of_match);
static int mpq8785_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct pmbus_driver_info *info;
enum chips chip_id;
info = devm_kmemdup(dev, &mpq8785_info, sizeof(*info), GFP_KERNEL);
if (!info)
return -ENOMEM;
if (dev->of_node)
chip_id = (kernel_ulong_t)of_device_get_match_data(dev);
else
chip_id = (kernel_ulong_t)i2c_get_match_data(client);
switch (chip_id) {
case mpq8785:
info->identify = mpq8785_identify;
break;
default:
return -ENODEV;
}
return pmbus_do_probe(client, info);
};
static struct i2c_driver mpq8785_driver = {
.driver = {
.name = "mpq8785",