hwmon: (pmbus) Add tps40422 front-end driver
For TI power management chip TPS40422, READ_TEMPERATURE_2 command is supported on page 1 of the chip, but the original driver(pmbus.c) only tried to detect this command on page 0, this will lead to a result that the temperature sensor in page 1 couldn't be detected. This change is to isolate the tps40422 driver from pmbus.c into a solo front-end driver. Signed-off-by: Zhu Laiwen <richard.zhu@nsn.com> [Guenter Roeck: Dropped unnecessary license text (fixes checkpatch warning)] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Zhu, Richard \(NSN - CN/Beijing\)
Guenter Roeck
parent
012cb5e257
commit
a8bfeceb0c
|
|
@ -23,12 +23,11 @@ Supported chips:
|
|||
http://www.lineagepower.com/oem/pdf/PDT012A0X.pdf
|
||||
http://www.lineagepower.com/oem/pdf/UDT020A0X.pdf
|
||||
http://www.lineagepower.com/oem/pdf/MDT040A0X.pdf
|
||||
* Texas Instruments TPS40400, TPS40422
|
||||
Prefixes: 'tps40400', 'tps40422'
|
||||
* Texas Instruments TPS40400
|
||||
Prefixes: 'tps40400'
|
||||
Addresses scanned: -
|
||||
Datasheets:
|
||||
http://www.ti.com/lit/gpn/tps40400
|
||||
http://www.ti.com/lit/gpn/tps40422
|
||||
* Generic PMBus devices
|
||||
Prefix: 'pmbus'
|
||||
Addresses scanned: -
|
||||
|
|
|
|||
|
|
@ -0,0 +1,64 @@
|
|||
Kernel driver tps40422
|
||||
======================
|
||||
|
||||
Supported chips:
|
||||
* TI TPS40422
|
||||
Prefix: 'tps40422'
|
||||
Addresses scanned: -
|
||||
Datasheet: http://www.ti.com/lit/gpn/tps40422
|
||||
|
||||
Author: Zhu Laiwen <richard.zhu@nsn.com>
|
||||
|
||||
|
||||
Description
|
||||
-----------
|
||||
|
||||
This driver supports TI TPS40422 Dual-Output or Two-Phase Synchronous Buck
|
||||
Controller with PMBus
|
||||
|
||||
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.
|
||||
|
||||
in[1-2]_label "vout[1-2]"
|
||||
in[1-2]_input Measured voltage. From READ_VOUT register.
|
||||
in[1-2]_alarm voltage alarm.
|
||||
|
||||
curr[1-2]_input Measured current. From READ_IOUT register.
|
||||
curr[1-2]_label "iout[1-2]"
|
||||
curr1_max Maximum current. From IOUT_OC_WARN_LIMIT register.
|
||||
curr1_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
|
||||
curr1_max_alarm Current high alarm. From IOUT_OC_WARN_LIMIT status.
|
||||
curr1_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
|
||||
curr2_alarm Current high alarm. From IOUT_OC_WARNING status.
|
||||
|
||||
temp1_input Measured temperature. From READ_TEMPERATURE_2 register on page 0.
|
||||
temp1_max Maximum temperature. From OT_WARN_LIMIT register.
|
||||
temp1_crit Critical high temperature. From OT_FAULT_LIMIT register.
|
||||
temp1_max_alarm Chip temperature high alarm. Set by comparing
|
||||
READ_TEMPERATURE_2 on page 0 with OT_WARN_LIMIT if TEMP_OT_WARNING
|
||||
status is set.
|
||||
temp1_crit_alarm Chip temperature critical high alarm. Set by comparing
|
||||
READ_TEMPERATURE_2 on page 0 with OT_FAULT_LIMIT if TEMP_OT_FAULT
|
||||
status is set.
|
||||
temp2_input Measured temperature. From READ_TEMPERATURE_2 register on page 1.
|
||||
temp2_alarm Chip temperature alarm on page 1.
|
||||
|
|
@ -20,8 +20,7 @@ config SENSORS_PMBUS
|
|||
help
|
||||
If you say yes here you get hardware monitoring support for generic
|
||||
PMBus devices, including but not limited to ADP4000, BMR453, BMR454,
|
||||
MDT040, NCP4200, NCP4208, PDT003, PDT006, PDT012, UDT020, TPS40400,
|
||||
and TPS40422.
|
||||
MDT040, NCP4200, NCP4208, PDT003, PDT006, PDT012, UDT020, and TPS40400.
|
||||
|
||||
This driver can also be built as a module. If so, the module will
|
||||
be called pmbus.
|
||||
|
|
@ -87,6 +86,16 @@ config SENSORS_MAX8688
|
|||
This driver can also be built as a module. If so, the module will
|
||||
be called max8688.
|
||||
|
||||
config SENSORS_TPS40422
|
||||
tristate "TI TPS40422"
|
||||
default n
|
||||
help
|
||||
If you say yes here you get hardware monitoring support for TI
|
||||
TPS40422.
|
||||
|
||||
This driver can also be built as a module. If so, the module will
|
||||
be called tps40422.
|
||||
|
||||
config SENSORS_UCD9000
|
||||
tristate "TI UCD90120, UCD90124, UCD9090, UCD90910"
|
||||
default n
|
||||
|
|
|
|||
|
|
@ -10,6 +10,7 @@ obj-$(CONFIG_SENSORS_LTC2978) += ltc2978.o
|
|||
obj-$(CONFIG_SENSORS_MAX16064) += max16064.o
|
||||
obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
|
||||
obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
|
||||
obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o
|
||||
obj-$(CONFIG_SENSORS_UCD9000) += ucd9000.o
|
||||
obj-$(CONFIG_SENSORS_UCD9200) += ucd9200.o
|
||||
obj-$(CONFIG_SENSORS_ZL6100) += zl6100.o
|
||||
|
|
|
|||
|
|
@ -193,7 +193,6 @@ static const struct i2c_device_id pmbus_id[] = {
|
|||
{"pdt012", 1},
|
||||
{"pmbus", 0},
|
||||
{"tps40400", 1},
|
||||
{"tps40422", 2},
|
||||
{"udt020", 1},
|
||||
{}
|
||||
};
|
||||
|
|
|
|||
|
|
@ -0,0 +1,64 @@
|
|||
/*
|
||||
* Hardware monitoring driver for TI TPS40422
|
||||
*
|
||||
* Copyright (c) 2014 Nokia Solutions and Networks.
|
||||
*
|
||||
* 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 tps40422_info = {
|
||||
.pages = 2,
|
||||
.format[PSC_VOLTAGE_IN] = linear,
|
||||
.format[PSC_VOLTAGE_OUT] = linear,
|
||||
.format[PSC_TEMPERATURE] = linear,
|
||||
.func[0] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP2
|
||||
| PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP
|
||||
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
|
||||
.func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_TEMP2
|
||||
| PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_STATUS_TEMP
|
||||
| PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
|
||||
};
|
||||
|
||||
static int tps40422_probe(struct i2c_client *client,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
return pmbus_do_probe(client, id, &tps40422_info);
|
||||
}
|
||||
|
||||
static const struct i2c_device_id tps40422_id[] = {
|
||||
{"tps40422", 0},
|
||||
{}
|
||||
};
|
||||
|
||||
MODULE_DEVICE_TABLE(i2c, tps40422_id);
|
||||
|
||||
/* This is the driver that will be inserted */
|
||||
static struct i2c_driver tps40422_driver = {
|
||||
.driver = {
|
||||
.name = "tps40422",
|
||||
},
|
||||
.probe = tps40422_probe,
|
||||
.remove = pmbus_do_remove,
|
||||
.id_table = tps40422_id,
|
||||
};
|
||||
|
||||
module_i2c_driver(tps40422_driver);
|
||||
|
||||
MODULE_AUTHOR("Zhu Laiwen <richard.zhu@nsn.com>");
|
||||
MODULE_DESCRIPTION("PMBus driver for TI TPS40422");
|
||||
MODULE_LICENSE("GPL");
|
||||
Loading…
Reference in New Issue