From 74d1e007915fab590f8be9dc647b19511260210c Mon Sep 17 00:00:00 2001 From: Stefan Wahren Date: Fri, 25 May 2018 21:24:35 +0200 Subject: hwmon: Add support for RPi voltage sensor MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Currently there is no easy way to detect undervoltage conditions on a remote Raspberry Pi. This hwmon driver retrieves the state of the undervoltage sensor via mailbox interface. The handling based on Noralf's modifications to the downstream firmware driver. In case of an undervoltage condition only an entry is written to the kernel log. CC: "Noralf Trønnes" Signed-off-by: Stefan Wahren Signed-off-by: Eric Anholt Acked-by: Guenter Roeck --- drivers/hwmon/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/hwmon/Kconfig') diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig index f10840ad465c..195154178aff 100644 --- a/drivers/hwmon/Kconfig +++ b/drivers/hwmon/Kconfig @@ -1298,6 +1298,16 @@ config SENSORS_PWM_FAN This driver can also be built as a module. If so, the module will be called pwm-fan. +config SENSORS_RASPBERRYPI_HWMON + tristate "Raspberry Pi voltage monitor" + depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE) + help + If you say yes here you get support for voltage sensor on the + Raspberry Pi. + + This driver can also be built as a module. If so, the module + will be called raspberrypi-hwmon. + config SENSORS_SHT15 tristate "Sensiron humidity and temperature sensors. SHT15 and compat." depends on GPIOLIB || COMPILE_TEST -- cgit v1.2.3