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Ignore keyboard errors and track numlock status

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This commit is contained in:
Vladimir 'phcoder' Serbinenko 2010-08-22 00:01:21 +02:00
parent 524c2712ad
commit ab247a453f
1 changed files with 33 additions and 7 deletions
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40
term/usb_keyboard.c
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@ -99,8 +99,21 @@ static grub_uint8_t usb_to_at_map[128] =
/* 0x7e */ 0x00, 0x00,
};
#define CAPS_LOCK 0x39
#define CAPS_LOCK_LED 0x02
enum
{
KEY_NO_KEY = 0x00,
KEY_ERR_BUFFER = 0x01,
KEY_ERR_POST = 0x02,
KEY_ERR_UNDEF = 0x03,
KEY_CAPS_LOCK = 0x39,
KEY_NUM_LOCK = 0x53,
};
enum
{
LED_NUM_LOCK = 0x01,
LED_CAPS_LOCK = 0x02
};
/* Valid values for bRequest. See HID definition version 1.11 section 7.2. */
#define USB_HID_GET_REPORT 0x01
@ -328,7 +341,9 @@ send_leds (struct grub_usb_keyboard_data *termdata)
char report[1];
report[0] = 0;
if (termdata->mods & GRUB_TERM_STATUS_CAPS)
report[0] |= CAPS_LOCK_LED;
report[0] |= LED_CAPS_LOCK;
if (termdata->mods & GRUB_TERM_STATUS_NUM)
report[0] |= LED_NUM_LOCK;
grub_usb_control_msg (termdata->usbdev, GRUB_USB_REQTYPE_CLASS_INTERFACE_OUT,
USB_HID_SET_REPORT, 0x0200, termdata->interfno,
sizeof (report), (char *) report);
@ -380,18 +395,29 @@ grub_usb_keyboard_checkkey (struct grub_term_input *term)
termdata->status = data[0];
if (actual < 3 || !data[2])
if (actual < 3)
return -1;
if (data[2] == CAPS_LOCK)
if (data[2] == KEY_NO_KEY || data[2] == KEY_ERR_BUFFER
|| data[2] == KEY_ERR_POST || data[2] == KEY_ERR_UNDEF)
return -1;
if (data[2] == KEY_CAPS_LOCK)
{
termdata->mods ^= GRUB_TERM_STATUS_CAPS;
send_leds (termdata);
return -1;
}
if (usb_to_at_map[data[2]] == 0)
grub_printf ("Unknown key 0x%x detected\n", data[2]);
if (data[2] == KEY_NUM_LOCK)
{
termdata->mods ^= GRUB_TERM_STATUS_NUM;
send_leds (termdata);
return -1;
}
if (data[2] > ARRAY_SIZE (usb_to_at_map) || usb_to_at_map[data[2]] == 0)
grub_printf ("Unknown key 0x%02x detected\n", data[2]);
else
termdata->key = grub_term_map_key (usb_to_at_map[data[2]],
interpret_status (data[0])