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);