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hwmon: (ina2xx) Add support for INA220 and INA230 

INA220 is register compatible to INA219, and INA230 is register compatible to
INA226, so all we need to do is to add name aliases for those two chips.

Cc: Lothar Felten <l-felten@ti.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2012-05-12 11:33:11 -07:00
parent 6106db25c2
commit dc92cd0c13
3 changed files with 31 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
Documentation/hwmon/ina2xx
View File

@ -8,12 +8,24 @@ Supported chips:
Datasheet: Publicly available at the Texas Instruments website
http://www.ti.com/
* Texas Instruments INA220
Prefix: 'ina220'
Addresses: I2C 0x40 - 0x4f
Datasheet: Publicly available at the Texas Instruments website
http://www.ti.com/
* Texas Instruments INA226
Prefix: 'ina226'
Addresses: I2C 0x40 - 0x4f
Datasheet: Publicly available at the Texas Instruments website
http://www.ti.com/
* Texas Instruments INA230
Prefix: 'ina230'
Addresses: I2C 0x40 - 0x4f
Datasheet: Publicly available at the Texas Instruments website
http://www.ti.com/
Author: Lothar Felten <l-felten@ti.com>
Description
@ -23,7 +35,13 @@ The INA219 is a high-side current shunt and power monitor with an I2C
interface. The INA219 monitors both shunt drop and supply voltage, with
programmable conversion times and filtering.
The INA220 is a high or low side current shunt and power monitor with an I2C
interface. The INA220 monitors both shunt drop and supply voltage.
The INA226 is a current shunt and power monitor with an I2C interface.
The INA226 monitors both a shunt voltage drop and bus supply voltage.
The INA230 is a high or low side current shunt and power monitor with an I2C
interface. The INA230 monitors both a shunt voltage drop and bus supply voltage.
The shunt value in micro-ohms can be set via platform data.

6
drivers/hwmon/Kconfig
View File

@ -1145,11 +1145,11 @@ config SENSORS_AMC6821
will be called amc6821.
config SENSORS_INA2XX
tristate "Texas Instruments INA219, INA226"
tristate "Texas Instruments INA219 and compatibles"
depends on I2C && EXPERIMENTAL
help
If you say yes here you get support for INA219 and INA226 power
monitor chips.
If you say yes here you get support for INA219, INA220, INA226, and
INA230 power monitor chips.
The INA2xx driver is configured for the default configuration of
the part as described in the datasheet.

10
drivers/hwmon/ina2xx.c
View File

@ -5,10 +5,18 @@
* Zero Drift Bi-Directional Current/Power Monitor with I2C Interface
* Datasheet: http://www.ti.com/product/ina219
*
* INA220:
* Bi-Directional Current/Power Monitor with I2C Interface
* Datasheet: http://www.ti.com/product/ina220
*
* INA226:
* Bi-Directional Current/Power Monitor with I2C Interface
* Datasheet: http://www.ti.com/product/ina226
*
* INA230:
* Bi-directional Current/Power Monitor with I2C Interface
* Datasheet: http://www.ti.com/product/ina230
*
* Copyright (C) 2012 Lothar Felten <l-felten@ti.com>
* Thanks to Jan Volkering
*
@ -277,7 +285,9 @@ static int ina2xx_remove(struct i2c_client *client)
static const struct i2c_device_id ina2xx_id[] = {
{ "ina219", ina219 },
{ "ina220", ina219 },
{ "ina226", ina226 },
{ "ina230", ina226 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ina2xx_id);