usbkbd.diff

usbkbd.diff

From b190103978a60cca75ccf846cf082a00b1eb6f8c Mon Sep 17 00:00:00 2001
From: Yang Keao <keao.yang@yahoo.com>
Date: Wed, 27 Mar 2019 21:12:17 +0800
Subject: [PATCH] Modify USBKBD

---
 drivers/hid/usbhid/usbkbd.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/hid/usbhid/usbkbd.c b/drivers/hid/usbhid/usbkbd.c
index ed01dc42..049a8dff 100644
--- a/drivers/hid/usbhid/usbkbd.c
+++ b/drivers/hid/usbhid/usbkbd.c
@@ -126,6 +126,18 @@ static void usb_kbd_irq(struct urb *urb)
                goto resubmit;
        }
 
+       static const unsigned char hjkl_map[4] = {11, 13, 14, 15};
+       static const unsigned char arrow_key_map[4] = {80, 81, 82, 79};
+       if (kbd->new[0] == 4) {
+               for(i=0;i<4;i++) {
+                       unsigned char* key = memscan(kbd->new + 2, hjkl_map[i], 6);
+                       if(key != kbd->new + 8) {
+                               *key = arrow_key_map[i];
+                               kbd->new[0] = 0;
+                       }
+               }
+       }
+
        for (i = 0; i < 8; i++)
                input_report_key(kbd->dev, usb_kbd_keycode[i + 224], (kbd->new[0] >> i) & 1);
 
-- 
2.19.2