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Add Ctrl combo key support to usb keyboard driver. 

Ctrl combo key support is added, which is very useful to input Ctrl-C
for interrupt current job.
Also add usb_event_poll() calling to usb_kbd_testc(), which can get
key input when tstc() is called.

Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
This commit is contained in:
Zhang Wei 2008-01-03 10:51:15 +08:00 committed by Wolfgang Denk
parent 10c7382bc5
commit 4785a694c0
1 changed files with 19 additions and 0 deletions
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19
common/usb_kbd.c
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@ -84,6 +84,7 @@ int repeat_delay;
static unsigned char num_lock = 0;
static unsigned char caps_lock = 0;
static unsigned char scroll_lock = 0;
static unsigned char ctrl = 0;
static unsigned char leds __attribute__ ((aligned (0x4)));
@ -120,6 +121,9 @@ static void usb_kbd_put_queue(char data)
/* test if a character is in the queue */
static int usb_kbd_testc(void)
{
#ifdef CFG_USB_EVENT_POLL
usb_event_poll();
#endif
if(usb_in_pointer==usb_out_pointer)
return(0); /* no data */
else
@ -274,6 +278,10 @@ static int usb_kbd_translate(unsigned char scancode,unsigned char modifier,int p
else /* non shifted */
keycode=usb_kbd_numkey[scancode-0x1e];
}
if (ctrl)
keycode = scancode - 0x3;
if(pressed==1) {
if(scancode==NUM_LOCK) {
num_lock=~num_lock;
@ -306,6 +314,17 @@ static int usb_kbd_irq(struct usb_device *dev)
return 1;
}
res=0;
switch (new[0]) {
case 0x0: /* No combo key pressed */
ctrl = 0;
break;
case 0x01: /* Left Ctrl pressed */
case 0x10: /* Right Ctrl pressed */
ctrl = 1;
break;
}
for (i = 2; i < 8; i++) {
if (old[i] > 3 && memscan(&new[2], old[i], 6) == &new[8]) {
res|=usb_kbd_translate(old[i],new[0],0);