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linux/Documentation/hwmon/ina2xx.rst

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hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
Kernel driver ina2xx
====================
Supported chips:
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
* Texas Instruments INA219
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
Prefix: 'ina219'
Addresses: I2C 0x40 - 0x4f
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
Datasheet: Publicly available at the Texas Instruments website
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: (ina2xx) Replace HTTP links with HTTPS ones Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200719181530.60878-1-grandmaster@al2klimov.de Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-07-19 18:15:30 +00:00
https://www.ti.com/
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
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>
2012-05-12 18:33:11 +00:00
* Texas Instruments INA220
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
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>
2012-05-12 18:33:11 +00:00
Prefix: 'ina220'
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
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>
2012-05-12 18:33:11 +00:00
Addresses: I2C 0x40 - 0x4f
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
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>
2012-05-12 18:33:11 +00:00
Datasheet: Publicly available at the Texas Instruments website
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: (ina2xx) Replace HTTP links with HTTPS ones Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200719181530.60878-1-grandmaster@al2klimov.de Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-07-19 18:15:30 +00:00
https://www.ti.com/
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>
2012-05-12 18:33:11 +00:00
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
* Texas Instruments INA226
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
Prefix: 'ina226'
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
Addresses: I2C 0x40 - 0x4f
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
Datasheet: Publicly available at the Texas Instruments website
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: (ina2xx) Replace HTTP links with HTTPS ones Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200719181530.60878-1-grandmaster@al2klimov.de Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-07-19 18:15:30 +00:00
https://www.ti.com/
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
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>
2012-05-12 18:33:11 +00:00
* Texas Instruments INA230
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
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>
2012-05-12 18:33:11 +00:00
Prefix: 'ina230'
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
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>
2012-05-12 18:33:11 +00:00
Addresses: I2C 0x40 - 0x4f
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
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>
2012-05-12 18:33:11 +00:00
Datasheet: Publicly available at the Texas Instruments website
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: (ina2xx) Replace HTTP links with HTTPS ones Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200719181530.60878-1-grandmaster@al2klimov.de Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-07-19 18:15:30 +00:00
https://www.ti.com/
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>
2012-05-12 18:33:11 +00:00
hwmon: (ina2xx) Add ina231 compatible string 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>
2015-01-15 01:34:58 +00:00
* Texas Instruments INA231
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: (ina2xx) Add ina231 compatible string 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>
2015-01-15 01:34:58 +00:00
Prefix: 'ina231'
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: (ina2xx) Add ina231 compatible string 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>
2015-01-15 01:34:58 +00:00
Addresses: I2C 0x40 - 0x4f
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: (ina2xx) Add ina231 compatible string 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>
2015-01-15 01:34:58 +00:00
Datasheet: Publicly available at the Texas Instruments website
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
hwmon: (ina2xx) Replace HTTP links with HTTPS ones Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: If not .svg: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200719181530.60878-1-grandmaster@al2klimov.de Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-07-19 18:15:30 +00:00
https://www.ti.com/
hwmon: (ina2xx) Add ina231 compatible string 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>
2015-01-15 01:34:58 +00:00
hwmon: (ina2xx) fix sysfs shunt resistor read access fix the sysfs shunt resistor read access: return the shunt resistor value, not the calibration register contents. update email address Signed-off-by: Lothar Felten <lothar.felten@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-08-14 07:09:37 +00:00
Author: Lothar Felten <lothar.felten@gmail.com>
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
Description
-----------
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.
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>
2012-05-12 18:33:11 +00:00
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.
hwmon: INA219 and INA226 support 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>
2012-05-12 08:36:38 +00:00
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.
hwmon: (ina2xx) Add ina231 compatible string 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>
2015-01-15 01:34:58 +00:00
INA230 and INA231 are high or low side current shunt and power monitors
with an I2C interface. The chips monitor both a shunt voltage drop and
bus supply voltage.
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>
2012-05-12 18:33:11 +00:00
hwmon: (ina2xx) make shunt resistance configurable at run-time 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>
2015-01-05 14:20:55 +00:00
The shunt value in micro-ohms can be set via platform data or device tree at
compile-time or via the shunt_resistor attribute in sysfs at run-time. Please
hwmon: (ina2) update ti,ina2xx.yaml reference in documentation Changeset 94f1ab944565 ("dt-bindings: hwmon: convert TI INA2xx bindings to dt-schema") renamed: Documentation/devicetree/bindings/hwmon/ina2xx.txt to: Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml. Update its cross-reference accordingly. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/886bd248721b146d844d46e26ddd4cd277f51446.1610535350.git.mchehab+huawei@kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2021-01-13 10:59:17 +00:00
refer to the Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml for bindings
hwmon: (ina2xx) Add device tree support to pass the shunt resistor 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>
2013-06-19 06:50:20 +00:00
if the device tree is used.
hwmon: (ina2xx) implement update_interval attribute for ina226 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>
2015-01-09 16:03:42 +00:00
Additionally ina226 supports update_interval attribute as described in
docs: hwmon: Add an index file and rename docs to *.rst Now that all files were converted to ReST format, rename them and add an index. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:29 +00:00
Documentation/hwmon/sysfs-interface.rst. Internally the interval is the sum of
hwmon: (ina2xx) implement update_interval attribute for ina226 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>
2015-01-09 16:03:42 +00:00
bus and shunt voltage conversion times multiplied by the averaging rate. We
don't touch the conversion times and only modify the number of averages. The
lower limit of the update_interval is 2 ms, the upper limit is 2253 ms.
The actual programmed interval may vary from the desired value.
Documentation: hwmon: Add descriptions for ina2xx sysfs entries There are a few sysfs entries being exposed to user space by the ina2xx hwmon driver while not getting explicitly documented. So this patch just adds a description section for them. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-11-19 20:31:16 +00:00
General sysfs entries
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
---------------------
Documentation: hwmon: Add descriptions for ina2xx sysfs entries There are a few sysfs entries being exposed to user space by the ina2xx hwmon driver while not getting explicitly documented. So this patch just adds a description section for them. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-11-19 20:31:16 +00:00
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
======================= ===============================
Documentation: hwmon: Add descriptions for ina2xx sysfs entries There are a few sysfs entries being exposed to user space by the ina2xx hwmon driver while not getting explicitly documented. So this patch just adds a description section for them. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-11-19 20:31:16 +00:00
in0_input Shunt voltage(mV) channel
in1_input Bus voltage(mV) channel
curr1_input Current(mA) measurement channel
power1_input Power(uW) measurement channel
shunt_resistor Shunt resistance(uOhm) channel
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
======================= ===============================
Documentation: hwmon: Add descriptions for ina2xx sysfs entries There are a few sysfs entries being exposed to user space by the ina2xx hwmon driver while not getting explicitly documented. So this patch just adds a description section for them. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-11-19 20:31:16 +00:00
Sysfs entries for ina226, ina230 and ina231 only
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
------------------------------------------------
Documentation: hwmon: Add descriptions for ina2xx sysfs entries There are a few sysfs entries being exposed to user space by the ina2xx hwmon driver while not getting explicitly documented. So this patch just adds a description section for them. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-11-19 20:31:16 +00:00
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
======================= ====================================================
hwmon: (ina2xx) Add support for current limits While the chips supported by this driver do not directly support current limits, they do support setting shunt voltage limits. The shunt voltage divided by the shunt resistor value is the current. On top of that, calibration values are set such that in the shunt voltage register and the current register report the same values. That means we can report and configure current limits based on shunt voltage limits, and we can do so with much better accuracy than by setting shunt voltage limits. Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2024-08-28 22:23:53 +00:00
curr1_lcrit Critical low current
curr1_crit Critical high current
curr1_lcrit_alarm Current critical low alarm
curr1_crit_alarm Current critical high alarm
hwmon: (ina2xx) Implement alert functions Implement alert functions for INA226, INA230 and INA231. Expose 06h Mask/Enable and 07h Alert Limit registers via alert setting and alarm files. Signed-off-by: Alex Qiu <xqiu@google.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-05-05 00:59:45 +00:00
in0_lcrit Critical low shunt voltage
in0_crit Critical high shunt voltage
in0_lcrit_alarm Shunt voltage critical low alarm
in0_crit_alarm Shunt voltage critical high alarm
in1_lcrit Critical low bus voltage
in1_crit Critical high bus voltage
in1_lcrit_alarm Bus voltage critical low alarm
in1_crit_alarm Bus voltage critical high alarm
power1_crit Critical high power
power1_crit_alarm Power critical high alarm
Documentation: hwmon: Add descriptions for ina2xx sysfs entries There are a few sysfs entries being exposed to user space by the ina2xx hwmon driver while not getting explicitly documented. So this patch just adds a description section for them. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-11-19 20:31:16 +00:00
update_interval data conversion time; affects number of samples used
to average results for shunt and bus voltages.
docs: hwmon: misc files: convert to ReST format Convert other files maintained by Guenter to ReST format, in order to allow them to be parsed by Sphinx. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2019-04-17 09:46:27 +00:00
======================= ====================================================
hwmon: (ina2xx) Implement alert functions Implement alert functions for INA226, INA230 and INA231. Expose 06h Mask/Enable and 07h Alert Limit registers via alert setting and alarm files. Signed-off-by: Alex Qiu <xqiu@google.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-05-05 00:59:45 +00:00
.. note::
- Configure `shunt_resistor` before configure `power1_crit`, because power
value is calculated based on `shunt_resistor` set.
- Because of the underlying register implementation, only one `*crit` setting
and its `alarm` can be active. Writing to one `*crit` setting clears other
`*crit` settings and alarms. Writing 0 to any `*crit` setting clears all
`*crit` settings and alarms.
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