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hwmon: (pmbus/mp2975) Prepare for MP2973 and MP2971 

Add support for differntiating between the chips.
The following commits will make use of this mechanism.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Signed-off-by: Naresh Solanki <Naresh.Solanki@9elements.com>
Link: https://lore.kernel.org/r/20230714135124.2645339-3-Naresh.Solanki@9elements.com
[groeck: double-cast of_device_get_match_data() to make gcc happy]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Patrick Rudolph 2023-07-14 15:51:11 +02:00 committed by Guenter Roeck
parent 99a368cfab
commit 1f6f34d08a
1 changed files with 19 additions and 8 deletions
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27
drivers/hwmon/pmbus/mp2975.c
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@ -10,6 +10,7 @@
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include "pmbus.h"
/* Vendor specific registers. */
@ -56,8 +57,13 @@
PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT | \
PMBUS_HAVE_POUT | PMBUS_PHASE_VIRTUAL)
enum chips {
mp2975
};
struct mp2975_data {
struct pmbus_driver_info info;
enum chips chip_id;
int vout_scale;
int vid_step[MP2975_PAGE_NUM];
int vref[MP2975_PAGE_NUM];
@ -68,6 +74,13 @@ struct mp2975_data {
int curr_sense_gain[MP2975_PAGE_NUM];
};
static const struct i2c_device_id mp2975_id[] = {
{"mp2975", mp2975},
{}
};
MODULE_DEVICE_TABLE(i2c, mp2975_id);
#define to_mp2975_data(x) container_of(x, struct mp2975_data, info)
static int mp2975_read_byte_data(struct i2c_client *client, int page, int reg)
@ -691,6 +704,11 @@ static int mp2975_probe(struct i2c_client *client)
if (!data)
return -ENOMEM;
if (client->dev.of_node)
data->chip_id = (enum chips)(unsigned long)of_device_get_match_data(&client->dev);
else
data->chip_id = i2c_match_id(mp2975_id, client)->driver_data;
memcpy(&data->info, &mp2975_info, sizeof(*info));
info = &data->info;
@ -739,15 +757,8 @@ static int mp2975_probe(struct i2c_client *client)
return pmbus_do_probe(client, info);
}
static const struct i2c_device_id mp2975_id[] = {
{"mp2975", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, mp2975_id);
static const struct of_device_id __maybe_unused mp2975_of_match[] = {
{.compatible = "mps,mp2975"},
{.compatible = "mps,mp2975", .data = (void *)mp2975},
{}
};
MODULE_DEVICE_TABLE(of, mp2975_of_match);