From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- drivers/hwmon/pmbus/max16064.c | 127 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 drivers/hwmon/pmbus/max16064.c (limited to 'drivers/hwmon/pmbus/max16064.c') diff --git a/drivers/hwmon/pmbus/max16064.c b/drivers/hwmon/pmbus/max16064.c new file mode 100644 index 000000000..fa237a3c3 --- /dev/null +++ b/drivers/hwmon/pmbus/max16064.c @@ -0,0 +1,127 @@ +/* + * Hardware monitoring driver for Maxim MAX16064 + * + * Copyright (c) 2011 Ericsson AB. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include +#include +#include +#include +#include +#include "pmbus.h" + +#define MAX16064_MFR_VOUT_PEAK 0xd4 +#define MAX16064_MFR_TEMPERATURE_PEAK 0xd6 + +static int max16064_read_word_data(struct i2c_client *client, int page, int reg) +{ + int ret; + + switch (reg) { + case PMBUS_VIRT_READ_VOUT_MAX: + ret = pmbus_read_word_data(client, page, + MAX16064_MFR_VOUT_PEAK); + break; + case PMBUS_VIRT_READ_TEMP_MAX: + ret = pmbus_read_word_data(client, page, + MAX16064_MFR_TEMPERATURE_PEAK); + break; + case PMBUS_VIRT_RESET_VOUT_HISTORY: + case PMBUS_VIRT_RESET_TEMP_HISTORY: + ret = 0; + break; + default: + ret = -ENODATA; + break; + } + return ret; +} + +static int max16064_write_word_data(struct i2c_client *client, int page, + int reg, u16 word) +{ + int ret; + + switch (reg) { + case PMBUS_VIRT_RESET_VOUT_HISTORY: + ret = pmbus_write_word_data(client, page, + MAX16064_MFR_VOUT_PEAK, 0); + break; + case PMBUS_VIRT_RESET_TEMP_HISTORY: + ret = pmbus_write_word_data(client, page, + MAX16064_MFR_TEMPERATURE_PEAK, + 0xffff); + break; + default: + ret = -ENODATA; + break; + } + return ret; +} + +static struct pmbus_driver_info max16064_info = { + .pages = 4, + .format[PSC_VOLTAGE_IN] = direct, + .format[PSC_VOLTAGE_OUT] = direct, + .format[PSC_TEMPERATURE] = direct, + .m[PSC_VOLTAGE_IN] = 19995, + .b[PSC_VOLTAGE_IN] = 0, + .R[PSC_VOLTAGE_IN] = -1, + .m[PSC_VOLTAGE_OUT] = 19995, + .b[PSC_VOLTAGE_OUT] = 0, + .R[PSC_VOLTAGE_OUT] = -1, + .m[PSC_TEMPERATURE] = -7612, + .b[PSC_TEMPERATURE] = 335, + .R[PSC_TEMPERATURE] = -3, + .func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP + | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP, + .func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, + .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, + .func[3] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT, + .read_word_data = max16064_read_word_data, + .write_word_data = max16064_write_word_data, +}; + +static int max16064_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + return pmbus_do_probe(client, id, &max16064_info); +} + +static const struct i2c_device_id max16064_id[] = { + {"max16064", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, max16064_id); + +/* This is the driver that will be inserted */ +static struct i2c_driver max16064_driver = { + .driver = { + .name = "max16064", + }, + .probe = max16064_probe, + .remove = pmbus_do_remove, + .id_table = max16064_id, +}; + +module_i2c_driver(max16064_driver); + +MODULE_AUTHOR("Guenter Roeck"); +MODULE_DESCRIPTION("PMBus driver for Maxim MAX16064"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3-54-g00ecf