mmCRTC_TEST_PATTERN_CONTROL
addr = CRTC_REG(mmCRTC_TEST_PATTERN_CONTROL);
dm_write_reg(ctx, CRTC_REG(mmCRTC_TEST_PATTERN_CONTROL), value);
addr = CRTC_REG(mmCRTC_TEST_PATTERN_CONTROL);
addr = CRTC_REG(mmCRTC_TEST_PATTERN_CONTROL);