This set creates a basic thermal zone, which reads the
SOC temp via a direct register read in AML. It also
adds an active cooling policy using a GPIO pin for fan
control that can optionally be enabled/disabled on either
GPIO18 (commercial fan shim board) or GPIO19 by the
user from the BDS.
it should now be possible when booted in ACPI mode to:
# sensors
acpitz-acpi-0
Adapter: ACPI interface
temp1: +57.6C (crit = +90.0C)
and the fan state, if enabled may be read with:
/sys/bus/acpi/devices/PNP0C06:00/PNP0C0B:00/physical_node/thermal_cooling/cur_state
while the kernel will automatically cycle the fan if the SoC
temp exceeds 60C.
v1->v2:
Add choice of GPIO pins to the BDS menu
Correct whitespace/etc issues from v1 review
Add an additional cleanup patch for contextual whitespace issues
Jeremy Linton (4):
Platform/RaspberryPi4: Add a basic thermal zone
Platform/RaspberryPi4: Create ACPI fan object
Platform/RaspberryPi: Add entry for user fan control
Platform/RaspberryPi: Trivial whitespace cleanup
Platform/RaspberryPi/AcpiTables/Dsdt.asl | 31 ++++++
Platform/RaspberryPi/Drivers/ConfigDxe/ConfigDxe.c | 104 ++++++++++++++++++---
.../RaspberryPi/Drivers/ConfigDxe/ConfigDxe.inf | 3 +
.../RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.uni | 6 ++
.../RaspberryPi/Drivers/ConfigDxe/ConfigDxeHii.vfr | 18 ++++
.../RaspberryPi/Drivers/ConfigDxe/SsdtThermal.asl | 76 +++++++++++++++
Platform/RaspberryPi/Include/ConfigVars.h | 4 +
Platform/RaspberryPi/RPi3/RPi3.dsc | 5 +
Platform/RaspberryPi/RPi4/RPi4.dsc | 8 ++
Platform/RaspberryPi/RaspberryPi.dec | 1 +
.../Bcm27xx/Include/IndustryStandard/Bcm2711.h | 2 +
11 files changed, 245 insertions(+), 13 deletions(-)
create mode 100644 Platform/RaspberryPi/Drivers/ConfigDxe/SsdtThermal.asl
--
2.13.7
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