Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
hwmon: (ina238) Add support for INA700
INA700 is register compatible to INA780 but has different current, power,
and energy LSB values.
While the chip does not directly report the shunt voltage, report
it anyway by calculating its value from the current register.
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # INA780
Cc: Christian Kahr <christian.kahr@sie.at>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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-6
+7
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Documentation/hwmon/ina238.rst
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-2
Documentation/hwmon/ina238.rst
···
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Datasheet:
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https://www.ti.com/lit/gpn/ina238
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* Texas Instruments INA700
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+
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Datasheet:
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https://www.ti.com/product/ina700
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+
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* Texas Instruments INA780
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Datasheet:
···
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different accuracy. INA228 is another variant of INA238 with higher ADC
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resolution. This chip also reports the energy.
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-
INA780 is a variant of the chip series with built-in shunt resistor.
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-
It also reports the energy.
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INA700 and INA780 are variants of the chip series with built-in shunt resistor.
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They also report the energy.
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SQ52206 is a mostly compatible chip from Sylergy. It reports the energy
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as well as the peak power consumption.
+3
-3
drivers/hwmon/Kconfig
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drivers/hwmon/Kconfig
···
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select REGMAP_I2C
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help
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If you say yes here you get support for INA228, INA237, INA238,
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INA780, and SQ52206 power monitor chips. This driver supports voltage,
2261
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current, power, energy, and temperature measurements as well as alarm
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configuration.
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INA700, INA780, and SQ52206 power monitor chips. This driver supports
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voltage, current, power, energy, and temperature measurements as well
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as alarm configuration.
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This driver can also be built as a module. If so, the module
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will be called ina238.
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-1
drivers/hwmon/ina238.c
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-1
drivers/hwmon/ina238.c
···
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.val_bits = 16,
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};
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-
enum ina238_ids { ina228, ina237, ina238, ina780, sq52206 };
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enum ina238_ids { ina228, ina237, ina238, ina700, ina780, sq52206 };
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struct ina238_config {
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bool has_20bit_voltage_current; /* vshunt, vbus and current are 20-bit fields */
···
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.config_default = INA238_CONFIG_DEFAULT,
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.bus_voltage_lsb = INA238_BUS_VOLTAGE_LSB,
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.temp_resolution = 12,
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+
},
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[ina700] = {
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.has_20bit_voltage_current = false,
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.has_energy = true,
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.has_power_highest = false,
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.power_calculate_factor = 20,
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.config_default = INA238_CONFIG_DEFAULT,
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.bus_voltage_lsb = INA238_BUS_VOLTAGE_LSB,
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.temp_resolution = 12,
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.current_lsb = 480,
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},
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[ina780] = {
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.has_20bit_voltage_current = false,
···
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{ "ina228", ina228 },
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{ "ina237", ina237 },
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{ "ina238", ina238 },
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{ "ina700", ina700 },
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{ "ina780", ina780 },
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{ "sq52206", sq52206 },
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{ }
···
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{
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.compatible = "ti,ina238",
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.data = (void *)ina238
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},
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{
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.compatible = "ti,ina700",
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.data = (void *)ina700
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},
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{
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.compatible = "ti,ina780",