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hwmon: (sht3x) Use per-client debugfs entry 

The I2C core now offers a debugfs-directory per client. Use it and
remove the custom handling.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20250131095148.11973-2-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Wolfram Sang 2025-01-31 10:38:33 +01:00 committed by Guenter Roeck
parent 84d867067b
commit bfbb730c42
1 changed files with 11 additions and 56 deletions
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67
drivers/hwmon/sht3x.c
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@ -44,8 +44,6 @@ static const unsigned char sht3x_cmd_read_status_reg[] = { 0xf3, 0x2d };
static const unsigned char sht3x_cmd_clear_status_reg[] = { 0x30, 0x41 };
static const unsigned char sht3x_cmd_read_serial_number[] = { 0x37, 0x80 };
static struct dentry *debugfs;
/* delays for single-shot mode i2c commands, both in us */
#define SHT3X_SINGLE_WAIT_TIME_HPM 15000
#define SHT3X_SINGLE_WAIT_TIME_MPM 6000
@ -167,7 +165,6 @@ struct sht3x_data {
enum sht3x_chips chip_id;
struct mutex i2c_lock; /* lock for sending i2c commands */
struct mutex data_lock; /* lock for updating driver data */
struct dentry *sensor_dir;
u8 mode;
const unsigned char *command;
@ -837,23 +834,7 @@ static int sht3x_write(struct device *dev, enum hwmon_sensor_types type,
}
}
static void sht3x_debugfs_init(struct sht3x_data *data)
{
char name[32];
snprintf(name, sizeof(name), "i2c%u-%02x",
data->client->adapter->nr, data->client->addr);
data->sensor_dir = debugfs_create_dir(name, debugfs);
debugfs_create_u32("serial_number", 0444,
data->sensor_dir, &data->serial_number);
}
static void sht3x_debugfs_remove(void *sensor_dir)
{
debugfs_remove_recursive(sensor_dir);
}
static int sht3x_serial_number_read(struct sht3x_data *data)
static void sht3x_serial_number_read(struct sht3x_data *data)
{
int ret;
char buffer[SHT3X_RESPONSE_LENGTH];
@ -864,11 +845,12 @@ static int sht3x_serial_number_read(struct sht3x_data *data)
buffer,
SHT3X_RESPONSE_LENGTH, 0);
if (ret)
return ret;
return;
data->serial_number = (buffer[0] << 24) | (buffer[1] << 16) |
(buffer[3] << 8) | buffer[4];
return ret;
debugfs_create_u32("serial_number", 0444, client->debugfs, &data->serial_number);
}
static const struct hwmon_ops sht3x_ops = {
@ -930,28 +912,14 @@ static int sht3x_probe(struct i2c_client *client)
if (ret)
return ret;
ret = sht3x_serial_number_read(data);
if (ret) {
dev_dbg(dev, "unable to read serial number\n");
} else {
sht3x_debugfs_init(data);
ret = devm_add_action_or_reset(dev,
sht3x_debugfs_remove,
data->sensor_dir);
if (ret)
return ret;
}
hwmon_dev = devm_hwmon_device_register_with_info(dev,
client->name,
data,
&sht3x_chip_info,
sht3x_groups);
hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, data,
&sht3x_chip_info, sht3x_groups);
if (IS_ERR(hwmon_dev))
dev_dbg(dev, "unable to register hwmon device\n");
return PTR_ERR(hwmon_dev);
return PTR_ERR_OR_ZERO(hwmon_dev);
sht3x_serial_number_read(data);
return 0;
}
/* device ID table */
@ -968,20 +936,7 @@ static struct i2c_driver sht3x_i2c_driver = {
.probe = sht3x_probe,
.id_table = sht3x_ids,
};
static int __init sht3x_init(void)
{
debugfs = debugfs_create_dir("sht3x", NULL);
return i2c_add_driver(&sht3x_i2c_driver);
}
module_init(sht3x_init);
static void __exit sht3x_cleanup(void)
{
debugfs_remove_recursive(debugfs);
i2c_del_driver(&sht3x_i2c_driver);
}
module_exit(sht3x_cleanup);
module_i2c_driver(sht3x_i2c_driver);
MODULE_AUTHOR("David Frey <david.frey@sensirion.com>");
MODULE_AUTHOR("Pascal Sachs <pascal.sachs@sensirion.com>");