WHDR
WHDR(cinfo, 0x4a);
WHDR(cinfo, 0);
WHDR(cinfo, 0x4a);
WHDR(cinfo, 0);
WHDR(cinfo, cinfo->doubleVCLK ? 0xe1 : 0xc1);
WHDR(cinfo, 0xa0); /* hidden dac reg: nothing special */
WHDR(cinfo, 0xc5);
WHDR(cinfo, 0); /* Hidden DAC register: - */
static void WHDR(const struct cirrusfb_info *cinfo, unsigned char val);