Some Asus laptops like UX550GE has hotkey (Fn+F7) for keyboard
backlight toggle. In this UX550GE, the hotkey incremet the level
of brightness for each keypress from 1 to 3, and then switch it
off when the brightness has been the max. This commit interprets
the code 0xc7 generated from hotkey to KEY_KBDILLUMUP to increment
the brightness, then pass KEY_KBDILLUMTOGGLE to user space after
the brightness max been reached for switching the led off.
Signed-off-by: Chris Chiu <c...@endlessm.com>
Signed-off-by: Jian-Hong Pan <jian-h...@endlessm.com>
Tested-by: Jian-Hong Pan <jian-h...@endlessm.com>
---
Notes:
v2:
- Remove redundant 'else' branch logic
drivers/platform/x86/asus-nb-wmi.c | 1 +
drivers/platform/x86/asus-wmi.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/drivers/platform/x86/asus-nb-wmi.c
b/drivers/platform/x86/asus-nb-wmi.c
index 136ff2b4cce5..14c502e18579 100644
--- a/drivers/platform/x86/asus-nb-wmi.c
+++ b/drivers/platform/x86/asus-nb-wmi.c
@@ -496,6 +496,7 @@ static const struct key_entry asus_nb_wmi_keymap[] = {
{ KE_KEY, 0xC4, { KEY_KBDILLUMUP } },
{ KE_KEY, 0xC5, { KEY_KBDILLUMDOWN } },
{ KE_IGNORE, 0xC6, }, /* Ambient Light Sensor notification */
+ { KE_KEY, 0xC7, { KEY_KBDILLUMTOGGLE } },
{ KE_END, 0},
};
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 1f6e68f0b646..4a3ba575c9ce 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -67,6 +67,7 @@ MODULE_LICENSE("GPL");
#define NOTIFY_BRNDOWN_MAX 0x2e
#define NOTIFY_KBD_BRTUP 0xc4
#define NOTIFY_KBD_BRTDWN 0xc5
+#define NOTIFY_KBD_BRTTOGGLE 0xc7
/* WMI Methods */
#define ASUS_WMI_METHODID_SPEC 0x43455053 /* BIOS SPECification */
@@ -1745,6 +1746,10 @@ static void asus_wmi_notify(u32 value, void *context)
}
}
+ if (code == NOTIFY_KBD_BRTTOGGLE)
+ if (asus->kbd_led_wk < asus->kbd_led.max_brightness)
+ code = NOTIFY_KBD_BRTUP;
+
if (is_display_toggle(code) &&
asus->driver->quirks->no_display_toggle)
goto exit;
--
2.14.1
