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. https://phabricator.endlessm.com/T21390 Signed-off-by: Chris Chiu <chiu@xxxxxxxxxxxx> --- drivers/platform/x86/asus-nb-wmi.c | 1 + drivers/platform/x86/asus-wmi.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c index 136ff2b..14c502e 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 1f6e68f..b64ff90 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 +1746,13 @@ 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; + else + code = NOTIFY_KBD_BRTTOGGLE; + } + if (is_display_toggle(code) && asus->driver->quirks->no_display_toggle) goto exit; -- 2.7.4
