cust_keys.h
/mediatek/custom/xxx/factory/inc
#define CUST_KEY_UP KEY_UP
#define CUST_KEY_VOLUP KEY_VOLUMEUP#define CUST_KEY_DOWN KEY_DOWN
#define CUST_KEY_VOLDOWN KEY_VOLUMEDOWN
#define CUST_KEY_LEFT KEY_MENU
#define CUST_KEY_CENTER KEY_HOMEPAGE
#define CUST_KEY_RIGHT KEY_BACK
#define CUST_KEY_CONFIRM KEY_HOMEPAGE