Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
hwmon: (ina238) Add support for INA780
INA780 is similar to the other chips in the series, but does not
support the shunt voltage register. Shunt voltage limit registers
have been renamed to current limit registers, but are otherwise
identical.
While the chip does not directly report the shunt voltage, report
it anyway by calculating its value from the current register.
Cc: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Chris Packham <chris.packham@alliedtelesis.co.nz> # INA780
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
+28
-5
+9
-1
Documentation/hwmon/ina238.rst
+9
-1
Documentation/hwmon/ina238.rst
···
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32
Datasheet:
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https://www.ti.com/lit/gpn/ina238
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+
* Texas Instruments INA780
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+
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+
Datasheet:
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+
https://www.ti.com/product/ina780a
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+
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* Silergy SQ52206
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Prefix: 'SQ52206'
···
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55
INA237 is a functionally equivalent variant of INA238 with slightly
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56
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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+
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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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SQ52206 is a mostly compatible chip from Sylergy. It reports the energy
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as well as the peak power consumption.
···
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curr1_max_alarm Maximum current alarm
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energy1_input Energy measurement (uJ)
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-
(SQ52206 and INA237 only)
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+
(SQ52206, INA237, and INA780 only)
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temp1_input Die temperature measurement (mC)
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temp1_max Maximum die temperature threshold (mC)
+3
-3
drivers/hwmon/Kconfig
+3
-3
drivers/hwmon/Kconfig
···
2256
2256
depends on I2C
2257
2257
select REGMAP_I2C
2258
2258
help
2259
-
If you say yes here you get support for INA228, INA237, INA238, and
2260
-
SQ52206 power monitor chips. This driver supports voltage, current,
2261
-
power, energy, and temperature measurements as well as alarm
2259
+
If you say yes here you get support for INA228, INA237, INA238,
2260
+
INA780, and SQ52206 power monitor chips. This driver supports voltage,
2261
+
current, power, energy, and temperature measurements as well as alarm
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configuration.
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2263
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This driver can also be built as a module. If so, the module
+16
-1
drivers/hwmon/ina238.c
+16
-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, sq52206 };
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+
enum ina238_ids { ina228, ina237, ina238, 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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+
[ina780] = {
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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 = 2400,
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},
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[sq52206] = {
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.has_20bit_voltage_current = false,
···
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836
{ "ina228", ina228 },
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837
{ "ina237", ina237 },
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{ "ina238", ina238 },
839
+
{ "ina780", ina780 },
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{ "sq52206", sq52206 },
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{ }
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};
···
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853
{
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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,ina780",
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+
.data = (void *)ina780
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},
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{
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.compatible = "silergy,sq52206",