diff options
Diffstat (limited to 'drivers/hwmon/pmbus/acbel-fsg032.c')
-rw-r--r-- | drivers/hwmon/pmbus/acbel-fsg032.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/drivers/hwmon/pmbus/acbel-fsg032.c b/drivers/hwmon/pmbus/acbel-fsg032.c new file mode 100644 index 000000000000..28a25f30e2cf --- /dev/null +++ b/drivers/hwmon/pmbus/acbel-fsg032.c @@ -0,0 +1,85 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2023 IBM Corp. + */ + +#include <linux/device.h> +#include <linux/fs.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/pmbus.h> +#include <linux/hwmon-sysfs.h> +#include "pmbus.h" + +static const struct i2c_device_id acbel_fsg032_id[] = { + { "acbel_fsg032" }, + {} +}; + +static struct pmbus_driver_info acbel_fsg032_info = { + .pages = 1, + .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN | PMBUS_HAVE_PIN | + PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | PMBUS_HAVE_POUT | + PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_TEMP3 | + PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_VOUT | + PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_TEMP | + PMBUS_HAVE_STATUS_INPUT | PMBUS_HAVE_STATUS_FAN12, +}; + +static int acbel_fsg032_probe(struct i2c_client *client) +{ + u8 buf[I2C_SMBUS_BLOCK_MAX + 1]; + struct device *dev = &client->dev; + int rc; + + rc = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, buf); + if (rc < 0) { + dev_err(dev, "Failed to read PMBUS_MFR_ID\n"); + return rc; + } + if (strncmp(buf, "ACBEL", 5)) { + buf[rc] = '\0'; + dev_err(dev, "Manufacturer '%s' not supported\n", buf); + return -ENODEV; + } + + rc = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf); + if (rc < 0) { + dev_err(dev, "Failed to read PMBUS_MFR_MODEL\n"); + return rc; + } + + if (strncmp(buf, "FSG032", 6)) { + buf[rc] = '\0'; + dev_err(dev, "Model '%s' not supported\n", buf); + return -ENODEV; + } + + rc = pmbus_do_probe(client, &acbel_fsg032_info); + if (rc) + return rc; + + return 0; +} + +static const struct of_device_id acbel_fsg032_of_match[] = { + { .compatible = "acbel,fsg032" }, + {} +}; +MODULE_DEVICE_TABLE(of, acbel_fsg032_of_match); + +static struct i2c_driver acbel_fsg032_driver = { + .driver = { + .name = "acbel-fsg032", + .of_match_table = acbel_fsg032_of_match, + }, + .probe_new = acbel_fsg032_probe, + .id_table = acbel_fsg032_id, +}; + +module_i2c_driver(acbel_fsg032_driver); + +MODULE_AUTHOR("Lakshmi Yadlapati"); +MODULE_DESCRIPTION("PMBus driver for AcBel Power System power supplies"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS(PMBUS); |