diff options
| author | Colin Percival <cperciva@FreeBSD.org> | 2024-10-22 18:53:55 +0000 |
|---|---|---|
| committer | Colin Percival <cperciva@FreeBSD.org> | 2024-11-03 16:15:39 +0000 |
| commit | 1db6ffb2a482dee109bbb596f31e9d8d035153c4 (patch) | |
| tree | a69c22ade48dd82ac171979eb9748aeb00060fd6 /sys/modules | |
| parent | 4b4c7b1924004e53f501612c7ad97b860644e583 (diff) | |
GPIO: Add ACPI _AEI support
Changes to acpi_gpiobus.c handle discovering and parsing the _AEI
objects and storing necessary data in device ivars. A new gpioaei.c
file implements the device, which simply requests an interrupt when
the pin is triggered and invokes the appropriate _Exx or _Lxx ACPI
method.
This makes the GPIO "power button" work on arm64 Graviton systems,
allowing EC2 "Stop"/"Reboot" instance calls to be handled cleanly.
(Prior to this change, those requests would time out after 4 minutes
and the instance would be forcibly killed.)
Reviewed by: imp, andrew, Ahmad Khalifa
Approved by: re (kib)
MFC after: 3 days
Sponsored by: Amazon
Differential Revision: https://reviews.freebsd.org/D47253
Co-authored-by: Andrew Turner <andrew@FreeBSD.org>
(cherry picked from commit 9709bda03cd0f20eba0ba4276fc3c2e06354a54f)
(cherry picked from commit c2cd78d9446ebe79accf6c1862230dfbe7276525)
Diffstat (limited to 'sys/modules')
| -rw-r--r-- | sys/modules/gpio/Makefile | 2 | ||||
| -rw-r--r-- | sys/modules/gpio/gpioaei/Makefile | 14 |
2 files changed, 15 insertions, 1 deletions
diff --git a/sys/modules/gpio/Makefile b/sys/modules/gpio/Makefile index ffb3581d1f01..1d7f69f1836d 100644 --- a/sys/modules/gpio/Makefile +++ b/sys/modules/gpio/Makefile @@ -24,7 +24,7 @@ # SUCH DAMAGE. # -SUBDIR = gpiobus gpioiic gpioled gpiospi gpioths +SUBDIR = gpioaei gpiobus gpioiic gpioled gpiospi gpioths .if !empty(OPT_FDT) SUBDIR += gpiokeys gpiopps diff --git a/sys/modules/gpio/gpioaei/Makefile b/sys/modules/gpio/gpioaei/Makefile new file mode 100644 index 000000000000..514dcd80a35e --- /dev/null +++ b/sys/modules/gpio/gpioaei/Makefile @@ -0,0 +1,14 @@ +.PATH: ${SRCTOP}/sys/dev/gpio/ + +KMOD= gpioaei +SRCS= gpioaei.c + +SRCS+= \ + bus_if.h \ + device_if.h \ + gpio_if.h \ + gpiobus_if.h + +CFLAGS+= -I. -I${SRCTOP}/sys/dev/gpio/ + +.include <bsd.kmod.mk> |