PLT_VOL_UP         26 drivers/hid/hid-plantronics.c #define PLT1_VOL_UP		(PLT_HID_1_0_PAGE | PLT_VOL_UP)
PLT_VOL_UP         28 drivers/hid/hid-plantronics.c #define PLT2_VOL_UP		(PLT_HID_2_0_PAGE | PLT_VOL_UP)