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authorBastien Nocera <hadess@hadess.net>2013-10-11 09:45:32 +0200
committerTom Gundersen <teg@jklm.no>2013-10-11 12:52:36 +0200
commit1a0464230c08506c3fd715ff7cc56660df3a85ca (patch)
treea3631f9b4ad6aa96cc7e9f743e82747ca708667e
parentf6f2ad9b9c2a2659256a2bce83016ecff0ca9451 (diff)
Add support for saving/restoring keyboard backlights
Piggy-backing on the display backlight code, this saves and restores keyboard backlights on supported devices. The detection code matches that of UPower: http://cgit.freedesktop.org/upower/tree/src/up-kbd-backlight.c#n173 https://bugs.freedesktop.org/show_bug.cgi?id=70367 [tomegun: also work for devices named "{smc,samsung,asus}::kbd_backlight"]
-rw-r--r--rules/99-systemd.rules.in4
-rw-r--r--src/backlight/backlight.c7
2 files changed, 8 insertions, 3 deletions
diff --git a/rules/99-systemd.rules.in b/rules/99-systemd.rules.in
index bbb7d0c2c3..20edffb290 100644
--- a/rules/99-systemd.rules.in
+++ b/rules/99-systemd.rules.in
@@ -51,9 +51,11 @@ SUBSYSTEM=="usb", ENV{DEVTYPE}=="usb_device", ENV{ID_USB_INTERFACES}=="*:0701??:
ACTION=="add", SUBSYSTEM=="net", KERNEL!="lo", RUN+="@rootlibexecdir@/systemd-sysctl --prefix=/proc/sys/net/ipv4/conf/$name --prefix=/proc/sys/net/ipv4/neigh/$name --prefix=/proc/sys/net/ipv6/conf/$name --prefix=/proc/sys/net/ipv6/neigh/$name"
-# Pull in backlight save/restore for all firmware backlight devices
+# Pull in backlight save/restore for all firmware backlight devices,
+# and keyboard backlights
ACTION=="add", SUBSYSTEM=="backlight", ATTR{type}=="firmware", TAG+="systemd", ENV{SYSTEMD_WANTS}+="systemd-backlight@$name.service"
+ACTION=="add", SUBSYSTEM=="leds", KERNEL=="*kbd_backlight", TAG+="systemd", ENV{SYSTEMD_WANTS}+="systemd-backlight@$name.service"
# Asynchronously mount file systems implemented by these modules as
# soon as they are loaded.
diff --git a/src/backlight/backlight.c b/src/backlight/backlight.c
index 9b2eada397..f22deed4e0 100644
--- a/src/backlight/backlight.c
+++ b/src/backlight/backlight.c
@@ -56,9 +56,11 @@ int main(int argc, char *argv[]) {
errno = 0;
device = udev_device_new_from_subsystem_sysname(udev, "backlight", argv[2]);
+ if (!device)
+ device = udev_device_new_from_subsystem_sysname(udev, "leds", argv[2]);
if (!device) {
if (errno != 0) {
- log_error("Failed to get backlight device: %m");
+ log_error("Failed to get backlight device '%s': %m", argv[2]);
r = -errno;
} else
r = log_oom();
@@ -66,7 +68,8 @@ int main(int argc, char *argv[]) {
goto finish;
}
- if (!streq_ptr(udev_device_get_subsystem(device), "backlight")) {
+ if (!streq_ptr(udev_device_get_subsystem(device), "backlight") &&
+ !streq_ptr(udev_device_get_subsystem(device), "leds")) {
log_error("Not a backlight device: %s", argv[2]);
r = -ENODEV;
goto finish;