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* hwmon: (ina2xx) Add ina231 compatible stringKevin Hilman2015-01-251-2/+9
| | | | | | | | | | | Add support for "ina231" as compatible string, and update Documentation and Kconfig accordingly. Tested with the Exynos5422-based odroid-xu3 board which has on-board INA231 sensors. Signed-off-by: Kevin Hilman <khilman@linaro.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (ina2xx) implement update_interval attribute for ina226Bartosz Golaszewski2015-01-251-0/+7
| | | | | | | | | | | | | This attribute allows to configure the update interval of ina226. Although the bus and shunt voltage conversion times remain hardcoded to 1.1 ms, we can now modify said interval by changing the averaging rate. While we're at it - add an additional variable to ina2xx_data, which holds the current configuration settings - this way we'll be able to restore the configuration in case of an unexpected chip reset. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (ina2xx) make shunt resistance configurable at run-timeBartosz Golaszewski2015-01-251-2/+3
| | | | | | | | | | | The shunt resistance can only be set via platform_data or device tree. This isn't suitable for devices in which the shunt resistance can change/isn't known at boot-time. Add a sysfs attribute that allows to read and set the shunt resistance. Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (ina2xx) Add device tree support to pass the shunt resistorTang Yuantian2013-06-271-1/+3
| | | | | | | | | Adding another way that is device tree to pass the shunt resistor value to driver except for platform data. Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com> [Guenter Roeck: Added missing of.h include] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* hwmon: (ina2xx) Add support for INA220 and INA230Guenter Roeck2012-09-231-0/+18
| | | | | | | | | 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>
* hwmon: INA219 and INA226 supportFelten, Lothar2012-05-221-0/+29
Add support for the Texas Instruments INA219 and INA226 power monitors. Signed-off-by: Lothar Felten <l-felten@ti.com> [guenter.roeck@ericsson.com: formatting cleanup; check for smbus word data; select PGA=8 for INA219] Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
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