From 273bfedc003c40bb0fb471841c62f4fc7063be83 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Sun, 31 Aug 2025 17:54:16 -0700 Subject: [PATCH] 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 Tested-by: Chris Packham # INA780 Cc: Christian Kahr Signed-off-by: Guenter Roeck --- Documentation/hwmon/ina238.rst | 9 +++++++-- drivers/hwmon/Kconfig | 6 +++--- drivers/hwmon/ina238.c | 17 ++++++++++++++++- 3 files changed, 26 insertions(+), 6 deletions(-) diff --git a/Documentation/hwmon/ina238.rst b/Documentation/hwmon/ina238.rst index 7227609618215..43950d1ec551f 100644 --- a/Documentation/hwmon/ina238.rst +++ b/Documentation/hwmon/ina238.rst @@ -32,6 +32,11 @@ Supported chips: Datasheet: https://www.ti.com/lit/gpn/ina238 + * Texas Instruments INA700 + + Datasheet: + https://www.ti.com/product/ina700 + * Texas Instruments INA780 Datasheet: @@ -61,8 +66,8 @@ INA237 is a functionally equivalent variant of INA238 with slightly different accuracy. INA228 is another variant of INA238 with higher ADC resolution. This chip also reports the energy. -INA780 is a variant of the chip series with built-in shunt resistor. -It also reports the energy. +INA700 and INA780 are variants of the chip series with built-in shunt resistor. +They also report the energy. SQ52206 is a mostly compatible chip from Sylergy. It reports the energy as well as the peak power consumption. diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index c044c26fbd114..8a41275ca518b 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -2257,9 +2257,9 @@ config SENSORS_INA238 select REGMAP_I2C help If you say yes here you get support for INA228, INA237, INA238, - INA780, and SQ52206 power monitor chips. This driver supports voltage, - current, power, energy, and temperature measurements as well as alarm - configuration. + INA700, INA780, and SQ52206 power monitor chips. This driver supports + voltage, current, power, energy, and temperature measurements as well + as alarm configuration. This driver can also be built as a module. If so, the module will be called ina238. diff --git a/drivers/hwmon/ina238.c b/drivers/hwmon/ina238.c index 98255619adeb7..356d19b7675ca 100644 --- a/drivers/hwmon/ina238.c +++ b/drivers/hwmon/ina238.c @@ -101,7 +101,7 @@ static const struct regmap_config ina238_regmap_config = { .val_bits = 16, }; -enum ina238_ids { ina228, ina237, ina238, ina780, sq52206 }; +enum ina238_ids { ina228, ina237, ina238, ina700, ina780, sq52206 }; struct ina238_config { bool has_20bit_voltage_current; /* vshunt, vbus and current are 20-bit fields */ @@ -155,6 +155,16 @@ static const struct ina238_config ina238_config[] = { .bus_voltage_lsb = INA238_BUS_VOLTAGE_LSB, .temp_resolution = 12, }, + [ina700] = { + .has_20bit_voltage_current = false, + .has_energy = true, + .has_power_highest = false, + .power_calculate_factor = 20, + .config_default = INA238_CONFIG_DEFAULT, + .bus_voltage_lsb = INA238_BUS_VOLTAGE_LSB, + .temp_resolution = 12, + .current_lsb = 480, + }, [ina780] = { .has_20bit_voltage_current = false, .has_energy = true, @@ -846,6 +856,7 @@ static const struct i2c_device_id ina238_id[] = { { "ina228", ina228 }, { "ina237", ina237 }, { "ina238", ina238 }, + { "ina700", ina700 }, { "ina780", ina780 }, { "sq52206", sq52206 }, { } @@ -865,6 +876,10 @@ static const struct of_device_id __maybe_unused ina238_of_match[] = { .compatible = "ti,ina238", .data = (void *)ina238 }, + { + .compatible = "ti,ina700", + .data = (void *)ina700 + }, { .compatible = "ti,ina780", .data = (void *)ina780 -- 2.47.3