/*
* Load a subset of the current (new) colormap into the Brooktree DAC.
*/
static void
cgeightloadcmap(struct cgeight_softc *sc, int start, int ncolors)
{
volatile struct bt_regs *bt;
u_int *ip;
int count;
ip = &sc->sc_cmap.cm_chip[BT_D4M3(start)]; /* start/4 * 3 */
count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
bt = &sc->sc_fbc->fbc_dac;
bt->bt_addr = BT_D4M4(start);
while (--count >= 0)
bt->bt_cmap = *ip++;
}
void
cgthree_loadcmap(struct cgthree_softc *sc, u_int start, u_int ncolors)
{
u_int cstart;
int count;
cstart = BT_D4M3(start);
count = BT_D4M3(start + ncolors - 1) - BT_D4M3(start) + 3;
BT_WRITE(sc, BT_ADDR, BT_D4M4(start));
while (--count >= 0) {
BT_WRITE(sc, BT_CMAP, sc->sc_cmap.cm_chip[cstart]);
cstart++;
}
}