DC_READ
const uint32_t status = DC_READ(tegra_crtc, DC_CMD_INT_STATUS_REG);
opt = DC_READ(tegra_crtc, DC_DISP_DISP_WIN_OPTIONS_REG);
DC_READ(tegra_crtc, DC_DISP_CURSOR_START_ADDR_REG);
cfg = DC_READ(tegra_crtc, DC_DISP_BLEND_CURSOR_CONTROL_REG);
opt = DC_READ(tegra_crtc, DC_DISP_DISP_WIN_OPTIONS_REG);
while (DC_READ(tegra_crtc, DC_CMD_STATE_CONTROL_REG) &