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de076198d1
Add the driver to monitor Intel common redundant power supply (crps185) with hwmon over pmbus. Signed-off-by: Ninad Palsule <ninad@linux.ibm.com> Link: https://lore.kernel.org/r/20241217173537.192331-3-ninad@linux.ibm.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright 2024 IBM Corp.
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*/
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#include <linux/i2c.h>
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#include <linux/of.h>
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#include <linux/pmbus.h>
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#include "pmbus.h"
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static const struct i2c_device_id crps_id[] = {
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{ "intel_crps185" },
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{}
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};
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MODULE_DEVICE_TABLE(i2c, crps_id);
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static struct pmbus_driver_info crps_info = {
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.pages = 1,
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/* PSU uses default linear data format. */
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.func[0] = PMBUS_HAVE_PIN | PMBUS_HAVE_IOUT |
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PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_IIN |
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PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT |
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PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
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PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 |
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PMBUS_HAVE_STATUS_TEMP |
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PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12,
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};
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static int crps_probe(struct i2c_client *client)
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{
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int rc;
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struct device *dev = &client->dev;
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char buf[I2C_SMBUS_BLOCK_MAX + 2] = { 0 };
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rc = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf);
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if (rc < 0)
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return dev_err_probe(dev, rc, "Failed to read PMBUS_MFR_MODEL\n");
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if (rc != 7 || strncmp(buf, "03NK260", 7)) {
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buf[rc] = '\0';
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return dev_err_probe(dev, -ENODEV, "Model '%s' not supported\n", buf);
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}
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rc = pmbus_do_probe(client, &crps_info);
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if (rc)
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return dev_err_probe(dev, rc, "Failed to probe\n");
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return 0;
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}
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static const struct of_device_id crps_of_match[] = {
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{
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.compatible = "intel,crps185",
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},
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{}
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};
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MODULE_DEVICE_TABLE(of, crps_of_match);
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static struct i2c_driver crps_driver = {
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.driver = {
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.name = "crps",
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.of_match_table = crps_of_match,
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},
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.probe = crps_probe,
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.id_table = crps_id,
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};
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module_i2c_driver(crps_driver);
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MODULE_AUTHOR("Ninad Palsule");
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MODULE_DESCRIPTION("PMBus driver for Intel Common Redundant power supplies");
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MODULE_LICENSE("GPL");
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MODULE_IMPORT_NS("PMBUS");
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