2018-05-02 14:02 GMT+08:00 Chris Chiu <chiu@xxxxxxxxxxxx>: > 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 > Tested-by: Jian-Hong Pan <jian-hong@xxxxxxxxxxxx> > 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 >
