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The hwmon sysfs interface specifies that energy values should be
reported in microjoules. This is also what tools such as lmsensors
expect, reporting wrong values otherwise.
Adjust the driver to scale the output accordingly and adjust ina238
driver documentation.
Fixes: 6daaf15a1173 ("hwmon: (ina238) Add support for SQ52206")
Signed-off-by: Jonas Rebmann <jre@pengutronix.de>
Link: https://lore.kernel.org/r/20250715-hwmon-ina238-microjoules-v1-1-9df678568a41@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Modify the calculation formula to adapt to different chips.
Signed-off-by: Wenliang Yan <wenliang202407@163.com>
Link: https://lore.kernel.org/r/20250506053741.4837-4-wenliang202407@163.com
[groeck: Fixed checkpatch issue (space before and after arithmetic operators)]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add support for SQ52206 to the Ina238 driver. Add registers,
increase compatibility, add compatibility programs for
multiple chips.
Signed-off-by: Wenliang Yan <wenliang202407@163.com>
Link: https://lore.kernel.org/r/20250506053741.4837-3-wenliang202407@163.com
[groeck: Fixed checkpatch issues (alignment, {} placing)]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Add structure ina238_config to store proprietary properties for different
chips to meet different chip adaptations
Signed-off-by: Wenliang Yan <wenliang202407@163.com>
Link: https://lore.kernel.org/r/20250506053741.4837-2-wenliang202407@163.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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`ina238_regmap_config` is not modified and can be declared as const to
move its data to a read-only section.
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com>
Link: https://lore.kernel.org/r/20240702-hwmon-const-regmap-v1-1-63f6d4765fe0@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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These drivers don't use the driver_data member of struct i2c_device_id,
so don't explicitly initialize this member.
This prepares putting driver_data in an anonymous union which requires
either no initialization or named designators. But it's also a nice
cleanup on its own.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20240430085654.1028864-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Class-based I2C probing requires detect() and address_list to be
set in the I2C client driver, see checks in i2c_detect().
It's misleading to declare I2C_CLASS_HWMON support if this
precondition isn't met.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/75747c6a-d414-4b07-8f66-5a5cdddc3c36@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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The INA237 "85-V, 16-Bit, Precision Power Monitor With I2C Interface" is
basically the same as INA328. Therefore add a corresponding compatible
to the driver.
According to the datasheet the main difference is the current and power
monitoring accuracy:
+------------------------+---------------+---------------+
| | INA238 | INA237 |
+------------------------+---------------+---------------+
| Offset voltage | +/- 5µV | +/- 50µV |
| Offset drift | +/- 0.02µV/°C | +/- 0.02µV/°C |
| Gain error | +/- 0.1% | +/- 0.3% |
| Gain error drift | +/- 25ppm/°C | +/- 50ppm/°C |
| Common mode rejection | 140dB | 120dB |
| Power accuracy | 0.7% | 1.6% |
+------------------------+---------------+---------------+
As well as the missing DEVICE_ID register at 0x3F, which is currently
not in use by the driver.
Signed-off-by: Richard Leitner <richard.leitner@linux.dev>
Link: https://lore.kernel.org/r/20231026-ina237-v2-1-dec44811a3c9@linux.dev
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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After commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new()
call-back type"), all drivers being converted to .probe_new() and then
03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert
back to (the new) .probe() to be able to eventually drop .probe_new() from
struct i2c_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230505131718.1210071-1-u.kleine-koenig@pengutronix.de
[groeck: Added missing change in pmbus/acbel-fsg032.c]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Statically allocated array of pointed to hwmon_channel_info can be made
const for safety.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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The INA238 is a I2C power monitor similar to other INA2xx devices,
providing shunt voltage, bus voltage, current, power and temperature
measurements.
Signed-off-by: Nathan Rossi <nathan.rossi@digi.com>
Link: https://lore.kernel.org/r/20211102052754.817220-3-nathan@nathanrossi.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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