DPTX_WRITE_DPCD 258 drivers/gpu/drm/rockchip/cdn-dp-reg.c ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_WRITE_DPCD, DPTX_WRITE_DPCD 264 drivers/gpu/drm/rockchip/cdn-dp-reg.c DPTX_WRITE_DPCD, sizeof(reg));