GRUB uses function keys. So we should support these with an USB keyboard. Provide support for F1-F12, Insert, Delete, Home, End, Page Up, Page Down. Simplify the code beforehand.
Enhance the keyboard unit test.
In total I could not see any increase of u-boot.img on the TBS2910 but as the special keys are only needed in the context of the UEFI subsystem it makes sense to save several hundred bytes on other boards.
size of u-boot.bin for tbs2910_defconfig 390080 with patch usb: kbd: implement special keys 389968 with all my patches 389968 tbs_defconfig, function keys enabled 390080
v4: reduce code size by avoiding string constants and introducing a configuration switch CONFIG_USB_KEYBOARD_FN_KEYS v3: rebase on current git HEAD v2: enhance the keyboard unit test
Heinrich Schuchardt (7): usb: kbd: fix typo usb: kbd: signature of usb_kbd_put_queue() usb: kbd: simplify coding for arrow keys usb: kbd: implement special keys usb: kbd: move USB_KBD_BOOT_REPORT_SIZE to usb.h dm: test: usb: rework keyboard test sandbox: enable USB_KEYBOARD_FN_KEYS
common/usb_kbd.c | 97 +++++----- configs/sandbox64_defconfig | 1 + configs/sandbox_defconfig | 1 + configs/sandbox_flattree_defconfig | 1 + configs/sandbox_spl_defconfig | 1 + drivers/usb/Kconfig | 6 + drivers/usb/emul/sandbox_keyb.c | 27 ++- include/usb.h | 6 + test/dm/usb.c | 284 ++++++++++++++++++++++++++++- 9 files changed, 364 insertions(+), 60 deletions(-)
-- 2.24.0