HID: Add suport for the brightness control keys on HP keyboards

The keys are found on the keyboards bundled with HP All-In-One machines
with USB VID/PID of 04ca:004d and 04f2:1061.

Signed-off-by: Keng-Yu Lin <kengyu@canonical.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index 132b0019365e..879443bf410f 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -834,6 +834,15 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
                 }
                 break;
 
+        case HID_UP_HPVENDOR2:
+                set_bit(EV_REP, input->evbit);
+                switch (usage->hid & HID_USAGE) {
+                case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN);  break;
+                case 0x004: map_key_clear(KEY_BRIGHTNESSUP);    break;
+                default:    goto ignore;
+                }
+                break;
+
         case HID_UP_MSVENDOR:
                 goto ignore;