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-rw-r--r--Documentation/hwmon/max2075177
-rw-r--r--MAINTAINERS7
-rw-r--r--drivers/hwmon/pmbus/Kconfig10
-rw-r--r--drivers/hwmon/pmbus/Makefile1
-rw-r--r--drivers/hwmon/pmbus/max20751.c64
5 files changed, 159 insertions, 0 deletions
diff --git a/Documentation/hwmon/max20751 b/Documentation/hwmon/max20751
new file mode 100644
index 000000000000..f9fa25ebb521
--- /dev/null
+++ b/Documentation/hwmon/max20751
@@ -0,0 +1,77 @@
+Kernel driver max20751
+======================
+
+Supported chips:
+ * maxim MAX20751
+ Prefix: 'max20751'
+ Addresses scanned: -
+ Datasheet: http://datasheets.maximintegrated.com/en/ds/MAX20751.pdf
+ Application note: http://pdfserv.maximintegrated.com/en/an/AN5941.pdf
+
+Author: Guenter Roeck <linux@roeck-us.net>
+
+
+Description
+-----------
+
+This driver supports MAX20751 Multiphase Master with PMBus Interface
+and Internal Buck Converter.
+
+The driver is a client driver to the core PMBus driver.
+Please see Documentation/hwmon/pmbus for details on PMBus client drivers.
+
+
+Usage Notes
+-----------
+
+This driver does not auto-detect devices. You will have to instantiate the
+devices explicitly. Please see Documentation/i2c/instantiating-devices for
+details.
+
+
+Platform data support
+---------------------
+
+The driver supports standard PMBus driver platform data.
+
+
+Sysfs entries
+-------------
+
+The following attributes are supported.
+
+in1_label "vin1"
+in1_input Measured voltage.
+in1_min Minimum input voltage.
+in1_max Maximum input voltage.
+in1_lcrit Critical minimum input voltage.
+in1_crit Critical maximum input voltage.
+in1_min_alarm Input voltage low alarm.
+in1_lcrit_alarm Input voltage critical low alarm.
+in1_min_alarm Input voltage low alarm.
+in1_max_alarm Input voltage high alarm.
+
+in2_label "vout1"
+in2_input Measured voltage.
+in2_min Minimum output voltage.
+in2_max Maximum output voltage.
+in2_lcrit Critical minimum output voltage.
+in2_crit Critical maximum output voltage.
+in2_min_alarm Output voltage low alarm.
+in2_lcrit_alarm Output voltage critical low alarm.
+in2_min_alarm Output voltage low alarm.
+in2_max_alarm Output voltage high alarm.
+
+curr1_input Measured output current.
+curr1_label "iout1"
+curr1_max Maximum output current.
+curr1_alarm Current high alarm.
+
+temp1_input Measured temperature.
+temp1_max Maximum temperature.
+temp1_crit Critical high temperature.
+temp1_max_alarm Chip temperature high alarm.
+temp1_crit_alarm Chip temperature critical high alarm.
+
+power1_input Output power.
+power1_label "pout1"
diff --git a/MAINTAINERS b/MAINTAINERS
index a9ae6c105520..6a406b607eeb 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6539,6 +6539,13 @@ S: Maintained
F: Documentation/hwmon/max16065
F: drivers/hwmon/max16065.c
+MAX20751 HARDWARE MONITOR DRIVER
+M: Guenter Roeck <linux@roeck-us.net>
+L: lm-sensors@lm-sensors.org
+S: Maintained
+F: Documentation/hwmon/max20751
+F: drivers/hwmon/max20751.c
+
MAX6650 HARDWARE MONITOR AND FAN CONTROLLER DRIVER
M: "Hans J. Koch" <hjk@hansjkoch.de>
L: lm-sensors@lm-sensors.org
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 67901cb08f77..6e1e6fe434f7 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -73,6 +73,16 @@ config SENSORS_MAX16064
This driver can also be built as a module. If so, the module will
be called max16064.
+config SENSORS_MAX20751
+ tristate "Maxim MAX20751"
+ default n
+ help
+ If you say yes here you get hardware monitoring support for Maxim
+ MAX20751.
+
+ This driver can also be built as a module. If so, the module will
+ be called max20751.
+
config SENSORS_MAX34440
tristate "Maxim MAX34440 and compatibles"
default n
diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
index 1454293e985c..bce046d37f02 100644
--- a/drivers/hwmon/pmbus/Makefile
+++ b/drivers/hwmon/pmbus/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_SENSORS_ADM1275) += adm1275.o
obj-$(CONFIG_SENSORS_LM25066) += lm25066.o
obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o
obj-$(CONFIG_SENSORS_MAX16064) += max16064.o
+obj-$(CONFIG_SENSORS_MAX20751) += max20751.o
obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o
diff --git a/drivers/hwmon/pmbus/max20751.c b/drivers/hwmon/pmbus/max20751.c
new file mode 100644
index 000000000000..ab74aeae8cf2
--- /dev/null
+++ b/drivers/hwmon/pmbus/max20751.c
@@ -0,0 +1,64 @@
+/*
+ * Hardware monitoring driver for Maxim MAX20751
+ *
+ * Copyright (c) 2015 Guenter Roeck
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include "pmbus.h"
+
+static struct pmbus_driver_info max20751_info = {
+ .pages = 1,
+ .format[PSC_VOLTAGE_IN] = linear,
+ .format[PSC_VOLTAGE_OUT] = vid,
+ .vrm_version = vr12,
+ .format[PSC_TEMPERATURE] = linear,
+ .format[PSC_CURRENT_OUT] = linear,
+ .format[PSC_POWER] = linear,
+ .func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
+ PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
+ PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
+ PMBUS_HAVE_POUT,
+};
+
+static int max20751_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ return pmbus_do_probe(client, id, &max20751_info);
+}
+
+static const struct i2c_device_id max20751_id[] = {
+ {"max20751", 0},
+ {}
+};
+
+MODULE_DEVICE_TABLE(i2c, max20751_id);
+
+static struct i2c_driver max20751_driver = {
+ .driver = {
+ .name = "max20751",
+ },
+ .probe = max20751_probe,
+ .remove = pmbus_do_remove,
+ .id_table = max20751_id,
+};
+
+module_i2c_driver(max20751_driver);
+
+MODULE_AUTHOR("Guenter Roeck <linux@roeck-us.net>");
+MODULE_DESCRIPTION("PMBus driver for Maxim MAX20751");
+MODULE_LICENSE("GPL");