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author | Guenter Roeck <linux@roeck-us.net> | 2015-06-08 11:15:23 -0700 |
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committer | Guenter Roeck <linux@roeck-us.net> | 2015-08-09 13:44:27 -0700 |
commit | 1f61cab8a729e00af77b51b44c3a8dc8ef3b3eb9 (patch) | |
tree | e50a28f26f95e50c4f50fdfbe81d69be9bce6886 /drivers/hwmon/pmbus | |
parent | 068c227056b9223fea1a759e08db2558d5cbb5ad (diff) | |
download | linux-stable-1f61cab8a729e00af77b51b44c3a8dc8ef3b3eb9.tar.gz linux-stable-1f61cab8a729e00af77b51b44c3a8dc8ef3b3eb9.tar.bz2 linux-stable-1f61cab8a729e00af77b51b44c3a8dc8ef3b3eb9.zip |
hwmon: (pmbus) Add support for MAX20751
MAX20751 is a multiphase power controller with internal buck converter.
It uses VR12.0 to report the output voltage. This requires an explicit
driver, since the VR version can not be auto-detected.
The chip supports a manufacturer specific command to fine-tune the output
voltage. This command is not currently supported.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/pmbus')
-rw-r--r-- | drivers/hwmon/pmbus/Kconfig | 10 | ||||
-rw-r--r-- | drivers/hwmon/pmbus/Makefile | 1 | ||||
-rw-r--r-- | drivers/hwmon/pmbus/max20751.c | 64 |
3 files changed, 75 insertions, 0 deletions
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"); |