diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/video_detect.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index fd7cbce8076e..f7c218dd8742 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -782,7 +782,7 @@ static bool prefer_native_over_acpi_video(void) * Determine which type of backlight interface to use on this system, * First check cmdline, then dmi quirks, then do autodetect. */ -static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native) +enum acpi_backlight_type __acpi_video_get_backlight_type(bool native, bool *auto_detect) { static DEFINE_MUTEX(init_mutex); static bool nvidia_wmi_ec_present; @@ -807,6 +807,9 @@ static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native) native_available = true; mutex_unlock(&init_mutex); + if (auto_detect) + *auto_detect = false; + /* * The below heuristics / detection steps are in order of descending * presedence. The commandline takes presedence over anything else. @@ -818,6 +821,9 @@ static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native) if (acpi_backlight_dmi != acpi_backlight_undef) return acpi_backlight_dmi; + if (auto_detect) + *auto_detect = true; + /* Special cases such as nvidia_wmi_ec and apple gmux. */ if (nvidia_wmi_ec_present) return acpi_backlight_nvidia_wmi_ec; @@ -837,15 +843,4 @@ static enum acpi_backlight_type __acpi_video_get_backlight_type(bool native) /* No ACPI video/native (old hw), use vendor specific fw methods. */ return acpi_backlight_vendor; } - -enum acpi_backlight_type acpi_video_get_backlight_type(void) -{ - return __acpi_video_get_backlight_type(false); -} -EXPORT_SYMBOL(acpi_video_get_backlight_type); - -bool acpi_video_backlight_use_native(void) -{ - return __acpi_video_get_backlight_type(true) == acpi_backlight_native; -} -EXPORT_SYMBOL(acpi_video_backlight_use_native); +EXPORT_SYMBOL(__acpi_video_get_backlight_type); |