diff options
| author | AceLan Kao <acelan.kao@canonical.com> | 2012-06-13 09:32:06 +0200 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2012-07-28 06:11:49 +0200 |
| commit | 272c77d55672ef92eda9d5e24a5a7ac62df9c431 (patch) | |
| tree | 8c960ccb629eb89e638810a96195573313d617d1 /drivers/platform/x86/asus-wmi.c | |
| parent | samsung-laptop: support R40/R41 (diff) | |
| download | linux-272c77d55672ef92eda9d5e24a5a7ac62df9c431.tar.xz linux-272c77d55672ef92eda9d5e24a5a7ac62df9c431.zip | |
asus-wmi: control backlight power through WMI, not ACPI
BugLink: https://bugs.launchpad.net/bugs/1000146
Some h/w that can adjust screen brightness through ACPI functions, but
can't turn on/off the backlight power correctly. So, we list those h/w in
quirks and try to turn on/off the backlight power through WMI.
Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
Signed-off-by: Corentin Chary <corentin.chary@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Diffstat (limited to 'drivers/platform/x86/asus-wmi.c')
| -rw-r--r-- | drivers/platform/x86/asus-wmi.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c index 556cbb455ed2..486f836b79df 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -47,6 +47,9 @@ #include <linux/thermal.h> #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> +#ifdef CONFIG_ACPI_VIDEO +#include <acpi/video.h> +#endif #include "asus-wmi.h" @@ -1676,7 +1679,13 @@ static int asus_wmi_add(struct platform_device *pdev) if (err) goto fail_rfkill; + if (asus->driver->quirks->wmi_backlight_power) + acpi_video_dmi_promote_vendor(); if (!acpi_video_backlight_support()) { +#ifdef CONFIG_ACPI_VIDEO + pr_info("Disabling ACPI video driver\n"); + acpi_video_unregister(); +#endif err = asus_wmi_backlight_init(asus); if (err && err != -ENODEV) goto fail_backlight; |