Provide support for F1-F12, Insert, Delete, Home, End, Page Up, Page Down.
As this leads to a size increase provide a customizing setting CONFIG_USB_KEYBOARD_FN_KEYS.
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- v4: reduce code size by avoiding string constants v3: no change v2: no change --- common/usb_kbd.c | 42 ++++++++++++++++++++++++++++++++++++++++++ drivers/usb/Kconfig | 6 ++++++ 2 files changed, 48 insertions(+)
diff --git a/common/usb_kbd.c b/common/usb_kbd.c index d177b97d67..d6b340bbe7 100644 --- a/common/usb_kbd.c +++ b/common/usb_kbd.c @@ -76,7 +76,11 @@ static const unsigned char usb_kbd_num_keypad[] = { };
static const u8 usb_special_keys[] = { +#ifdef CONFIG_USB_KEYBOARD_FN_KEYS + '2', 'H', '5', '3', 'F', '6', 'C', 'D', 'B', 'A' +#else 'C', 'D', 'B', 'A' +#endif };
/* @@ -233,6 +237,43 @@ static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode, return 0; }
+#ifdef CONFIG_USB_KEYBOARD_FN_KEYS + if (scancode < 0x3a || scancode > 0x52 || + scancode == 0x46 || scancode == 0x47) + return 1; + + usb_kbd_put_queue(data, 0x1b); + if (scancode < 0x3e) { + /* F1 - F4 */ + usb_kbd_put_queue(data, 0x4f); + usb_kbd_put_queue(data, scancode - 0x3a + 'P'); + return 0; + } + usb_kbd_put_queue(data, '['); + if (scancode < 0x42) { + /* F5 - F8 */ + usb_kbd_put_queue(data, '1'); + if (scancode == 0x3e) + --scancode; + keycode = scancode - 0x3f + '7'; + } else if (scancode < 0x49) { + /* F9 - F12 */ + usb_kbd_put_queue(data, '2'); + if (scancode > 0x43) + ++scancode; + keycode = scancode - 0x42 + '0'; + } else { + /* + * INSERT, HOME, PAGE UP, DELETE, END, PAGE DOWN, + * RIGHT, LEFT, DOWN, UP + */ + keycode = usb_special_keys[scancode - 0x49]; + } + usb_kbd_put_queue(data, keycode); + if (scancode < 0x4f && scancode != 0x4a && scancode != 0x4d) + usb_kbd_put_queue(data, '~'); + return 0; +#else /* Left, Right, Up, Down */ if (scancode > 0x4e && scancode < 0x53) { usb_kbd_put_queue(data, 0x1b); @@ -241,6 +282,7 @@ static int usb_kbd_translate(struct usb_kbd_pdata *data, unsigned char scancode, return 0; } return 1; +#endif /* CONFIG_USB_KEYBOARD_FN_KEYS */ }
static uint32_t usb_kbd_service_key(struct usb_device *dev, int i, int up) diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 9af78e8822..bea4a92b61 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -100,6 +100,12 @@ config USB_KEYBOARD
if USB_KEYBOARD
+config USB_KEYBOARD_FN_KEYS + bool "USB keyboard function key support" + help + Say Y here if you want support for keys F1 - F12, INS, HOME, DELETE, + END, PAGE UP, and PAGE DOWN. + choice prompt "USB keyboard polling" default SYS_USB_EVENT_POLL -- 2.24.0