Exemplo n.º 1
0
static void
vrkiu_scan(struct vrkiu_chip* chip)
{
	int i, j, modified, mask;
	unsigned short scandata[KIU_NSCANLINE/2];

	if (!chip->kc_enabled)
		return;

	for (i = 0; i < KIU_NSCANLINE / 2; i++) {
		scandata[i] = vrkiu_read(chip, KIUDATP + i * 2);
	}
	eliminate_phantom_keys(chip, scandata);

	for (i = 0; i < KIU_NSCANLINE / 2; i++) {
		modified = scandata[i] ^ chip->kc_scandata[i];
		chip->kc_scandata[i] = scandata[i];
		mask = 1;
		for (j = 0; j < 16; j++, mask <<= 1) {
			/*
			 * Simultaneous keypresses are resolved by registering
			 * the one with the lowest bit index first.
			 */
			if (modified & mask) {
				int key = i * 16 + j;
				DPRINTF(("vrkiu_scan: %s(%d,%d)\n",
				    (scandata[i] & mask) ? "down" : "up",
				    i, j));
				hpckbd_input(chip->kc_hpckbd,
				    (scandata[i] & mask), key);
			}
		}
	}
}
Exemplo n.º 2
0
void
tc5165buf_soft(void *arg)
{
	struct tc5165buf_chip *scc = arg;
	bus_space_tag_t t = scc->scc_cst;
	bus_space_handle_t h = scc->scc_csh;
	u_int16_t mask, rpat, edge;
	int i, j, type, val;
	int s;

	hpckbd_input_hook(scc->scc_hpckbd);

	/* clear scanlines */
	(void)bus_space_read_2(t, h, 0);
	delay(3);

	for (i = 0; i < TC5165_COLUMN_MAX; i++) {
		rpat = bus_space_read_2(t, h, 2 << i);
		delay(3);
		(void)bus_space_read_2(t, h, 0);
		delay(3);
		if ((edge = (rpat ^ scc->scc_buf[i]))) {
			scc->scc_buf[i] = rpat;
			for (j = 0, mask = 1; j < TC5165_ROW_MAX; 
			    j++, mask <<= 1) {
				if (mask & edge) {
					type = mask & rpat ? 1 : 0;
					val = j * TC5165_COLUMN_MAX + i;
					DPRINTF(("%d %d\n", j, i));
					hpckbd_input(scc->scc_hpckbd,
					    type, val);
				}
			}
		}
	}

	s = spltty();
	scc->scc_queued = 0;
	splx(s);
}