From: Aleksey Nemcev <Nemcev_Aleksey@xxxxxxxx>
This quirk is for some Asus notebooks like FX705GE with
working ACPI backlight control, if asus-nb-wmi breaks it
Fixes display backlight control on FX705GE after asus-nb-wmi module load
Signed-off-by: Aleksey Nemcev <Nemcev_Aleksey@xxxxxxxx>
---
drivers/platform/x86/asus-nb-wmi.c | 1 +
drivers/platform/x86/asus-wmi.c | 3 ++-
drivers/platform/x86/asus-wmi.h | 1 +
3 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
index 5d98f5bdba14..94d1775c6934 100644
--- a/drivers/platform/x86/asus-nb-wmi.c
+++ b/drivers/platform/x86/asus-nb-wmi.c
@@ -88,6 +88,7 @@ static struct quirk_entry quirk_asus_x55u = {
static struct quirk_entry quirk_asus_fx705ge = {
.wmi_needs_3_args = true,
.wmi_uses_dsts2 = true,
+ .wmi_backlight_disable = true,
};
static struct quirk_entry quirk_asus_wapf4 = {
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 4c62425f99c8..75022e816042 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -2254,7 +2254,8 @@ static int asus_wmi_add(struct platform_device *pdev)
if (asus->driver->quirks->xusb2pr)
asus_wmi_set_xusb2pr(asus);
- if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
+ if (acpi_video_get_backlight_type() == acpi_backlight_vendor
+ && !asus->driver->quirks->wmi_backlight_disable) {
err = asus_wmi_backlight_init(asus);
if (err && err != -ENODEV)
goto fail_backlight;
diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h
index 3d39de76b01b..df2aac92860b 100644
--- a/drivers/platform/x86/asus-wmi.h
+++ b/drivers/platform/x86/asus-wmi.h
@@ -35,6 +35,7 @@ struct quirk_entry {
bool wmi_force_als_set;
bool wmi_needs_3_args;
bool wmi_uses_dsts2;
+ bool wmi_backlight_disable;
int wapf;
/*
* For machines with AMD graphic chips, it will send out WMI event
--
2.20.1
