793 					struct exynos_dsi_transfer *xfer)  in exynos_dsi_send_to_fifo()  argument
796 	const u8 *payload = xfer->tx_payload + xfer->tx_done;  in exynos_dsi_send_to_fifo()
797 	u16 length = xfer->tx_len - xfer->tx_done;  in exynos_dsi_send_to_fifo()
798 	bool first = !xfer->tx_done;  in exynos_dsi_send_to_fifo()
802 		xfer, xfer->tx_len, xfer->tx_done, xfer->rx_len, xfer->rx_done);  in exynos_dsi_send_to_fifo()
807 	xfer->tx_done += length;  in exynos_dsi_send_to_fifo()
839 	reg = (xfer->data[1] << 16) | (xfer->data[0] << 8) | xfer->data_id;  in exynos_dsi_send_to_fifo()
845 	if (NEQV(xfer->flags & MIPI_DSI_MSG_USE_LPM,  in exynos_dsi_send_to_fifo()
847 		exynos_dsi_set_cmd_lpm(dsi, xfer->flags & MIPI_DSI_MSG_USE_LPM);  in exynos_dsi_send_to_fifo()
853 	if (xfer->flags & MIPI_DSI_MSG_REQ_ACK)  in exynos_dsi_send_to_fifo()
858 					struct exynos_dsi_transfer *xfer)  in exynos_dsi_read_from_fifo()  argument
860 	u8 *payload = xfer->rx_payload + xfer->rx_done;  in exynos_dsi_read_from_fifo()
861 	bool first = !xfer->rx_done;  in exynos_dsi_read_from_fifo()
872 			if (xfer->rx_len >= 2) {  in exynos_dsi_read_from_fifo()
874 				++xfer->rx_done;  in exynos_dsi_read_from_fifo()
880 			++xfer->rx_done;  in exynos_dsi_read_from_fifo()
881 			xfer->rx_len = xfer->rx_done;  in exynos_dsi_read_from_fifo()
882 			xfer->result = 0;  in exynos_dsi_read_from_fifo()
887 			xfer->result = 0;  in exynos_dsi_read_from_fifo()
892 		if (length > xfer->rx_len) {  in exynos_dsi_read_from_fifo()
895 				xfer->rx_len, length);  in exynos_dsi_read_from_fifo()
896 			length = xfer->rx_len;  in exynos_dsi_read_from_fifo()
897 		} else if (length < xfer->rx_len)  in exynos_dsi_read_from_fifo()
898 			xfer->rx_len = length;  in exynos_dsi_read_from_fifo()
901 	length = xfer->rx_len - xfer->rx_done;  in exynos_dsi_read_from_fifo()
902 	xfer->rx_done += length;  in exynos_dsi_read_from_fifo()
929 	if (xfer->rx_done == xfer->rx_len)  in exynos_dsi_read_from_fifo()
930 		xfer->result = 0;  in exynos_dsi_read_from_fifo()
944 	struct exynos_dsi_transfer *xfer;  in exynos_dsi_transfer_start()  local
955 	xfer = list_first_entry(&dsi->transfer_list,  in exynos_dsi_transfer_start()
960 	if (xfer->tx_len && xfer->tx_done == xfer->tx_len)  in exynos_dsi_transfer_start()
964 	exynos_dsi_send_to_fifo(dsi, xfer);  in exynos_dsi_transfer_start()
966 	if (xfer->tx_len || xfer->rx_len)  in exynos_dsi_transfer_start()
969 	xfer->result = 0;  in exynos_dsi_transfer_start()
970 	complete(&xfer->completed);  in exynos_dsi_transfer_start()
974 	list_del_init(&xfer->list);  in exynos_dsi_transfer_start()
985 	struct exynos_dsi_transfer *xfer;  in exynos_dsi_transfer_finish()  local
996 	xfer = list_first_entry(&dsi->transfer_list,  in exynos_dsi_transfer_finish()
1003 		xfer, xfer->tx_len, xfer->tx_done, xfer->rx_len, xfer->rx_done);  in exynos_dsi_transfer_finish()
1005 	if (xfer->tx_done != xfer->tx_len)  in exynos_dsi_transfer_finish()
1008 	if (xfer->rx_done != xfer->rx_len)  in exynos_dsi_transfer_finish()
1009 		exynos_dsi_read_from_fifo(dsi, xfer);  in exynos_dsi_transfer_finish()
1011 	if (xfer->rx_done != xfer->rx_len)  in exynos_dsi_transfer_finish()
1016 	list_del_init(&xfer->list);  in exynos_dsi_transfer_finish()
1021 	if (!xfer->rx_len)  in exynos_dsi_transfer_finish()
1022 		xfer->result = 0;  in exynos_dsi_transfer_finish()
1023 	complete(&xfer->completed);  in exynos_dsi_transfer_finish()
1029 					struct exynos_dsi_transfer *xfer)  in exynos_dsi_remove_transfer()  argument
1037 	    xfer == list_first_entry(&dsi->transfer_list,  in exynos_dsi_remove_transfer()
1039 		list_del_init(&xfer->list);  in exynos_dsi_remove_transfer()
1047 	list_del_init(&xfer->list);  in exynos_dsi_remove_transfer()
1053 					struct exynos_dsi_transfer *xfer)  in exynos_dsi_transfer()  argument
1058 	xfer->tx_done = 0;  in exynos_dsi_transfer()
1059 	xfer->rx_done = 0;  in exynos_dsi_transfer()
1060 	xfer->result = -ETIMEDOUT;  in exynos_dsi_transfer()
1061 	init_completion(&xfer->completed);  in exynos_dsi_transfer()
1066 	list_add_tail(&xfer->list, &dsi->transfer_list);  in exynos_dsi_transfer()
1073 	wait_for_completion_timeout(&xfer->completed,  in exynos_dsi_transfer()
1075 	if (xfer->result == -ETIMEDOUT) {  in exynos_dsi_transfer()
1076 		exynos_dsi_remove_transfer(dsi, xfer);  in exynos_dsi_transfer()
1077 		dev_err(dsi->dev, "xfer timed out: %*ph %*ph\n", 2, xfer->data,  in exynos_dsi_transfer()
1078 			xfer->tx_len, xfer->tx_payload);  in exynos_dsi_transfer()
1083 	return xfer->result;  in exynos_dsi_transfer()
1251 	struct exynos_dsi_transfer xfer;  in exynos_dsi_host_transfer()  local
1264 	xfer.data_id = msg->type | (msg->channel << 6);  in exynos_dsi_host_transfer()
1271 		xfer.tx_len = 0;  in exynos_dsi_host_transfer()
1272 		xfer.data[0] = tx_buf[0];  in exynos_dsi_host_transfer()
1273 		xfer.data[1] = (msg->tx_len == 2) ? tx_buf[1] : 0;  in exynos_dsi_host_transfer()
1275 		xfer.tx_len = msg->tx_len;  in exynos_dsi_host_transfer()
1276 		xfer.data[0] = msg->tx_len & 0xff;  in exynos_dsi_host_transfer()
1277 		xfer.data[1] = msg->tx_len >> 8;  in exynos_dsi_host_transfer()
1278 		xfer.tx_payload = msg->tx_buf;  in exynos_dsi_host_transfer()
1281 	xfer.rx_len = msg->rx_len;  in exynos_dsi_host_transfer()
1282 	xfer.rx_payload = msg->rx_buf;  in exynos_dsi_host_transfer()
1283 	xfer.flags = msg->flags;  in exynos_dsi_host_transfer()
1285 	ret = exynos_dsi_transfer(dsi, &xfer);  in exynos_dsi_host_transfer()
1286 	return (ret < 0) ? ret : xfer.rx_done;  in exynos_dsi_host_transfer()