843 static int mtk_i2c_do_transfer(struct mtk_i2c *i2c, struct i2c_msg *msgs,  in mtk_i2c_do_transfer()  argument
875 	addr_reg = i2c_8bit_addr_from_msg(msgs);  in mtk_i2c_do_transfer()
891 			mtk_i2c_writew(i2c, msgs->len, OFFSET_TRANSFER_LEN);  in mtk_i2c_do_transfer()
892 			mtk_i2c_writew(i2c, (msgs + 1)->len,  in mtk_i2c_do_transfer()
895 			mtk_i2c_writew(i2c, msgs->len | ((msgs + 1)->len) << 8,  in mtk_i2c_do_transfer()
900 		mtk_i2c_writew(i2c, msgs->len, OFFSET_TRANSFER_LEN);  in mtk_i2c_do_transfer()
915 		dma_rd_buf = i2c_get_dma_safe_msg_buf(msgs, 1);  in mtk_i2c_do_transfer()
920 					msgs->len, DMA_FROM_DEVICE);  in mtk_i2c_do_transfer()
922 			i2c_put_dma_safe_msg_buf(dma_rd_buf, msgs, false);  in mtk_i2c_do_transfer()
933 		writel(msgs->len, i2c->pdmabase + OFFSET_RX_LEN);  in mtk_i2c_do_transfer()
938 		dma_wr_buf = i2c_get_dma_safe_msg_buf(msgs, 1);  in mtk_i2c_do_transfer()
943 					msgs->len, DMA_TO_DEVICE);  in mtk_i2c_do_transfer()
945 			i2c_put_dma_safe_msg_buf(dma_wr_buf, msgs, false);  in mtk_i2c_do_transfer()
956 		writel(msgs->len, i2c->pdmabase + OFFSET_TX_LEN);  in mtk_i2c_do_transfer()
961 		dma_wr_buf = i2c_get_dma_safe_msg_buf(msgs, 1);  in mtk_i2c_do_transfer()
966 					msgs->len, DMA_TO_DEVICE);  in mtk_i2c_do_transfer()
968 			i2c_put_dma_safe_msg_buf(dma_wr_buf, msgs, false);  in mtk_i2c_do_transfer()
973 		dma_rd_buf = i2c_get_dma_safe_msg_buf((msgs + 1), 1);  in mtk_i2c_do_transfer()
976 					 msgs->len, DMA_TO_DEVICE);  in mtk_i2c_do_transfer()
978 			i2c_put_dma_safe_msg_buf(dma_wr_buf, msgs, false);  in mtk_i2c_do_transfer()
984 					(msgs + 1)->len,  in mtk_i2c_do_transfer()
988 					 msgs->len, DMA_TO_DEVICE);  in mtk_i2c_do_transfer()
990 			i2c_put_dma_safe_msg_buf(dma_wr_buf, msgs, false);  in mtk_i2c_do_transfer()
991 			i2c_put_dma_safe_msg_buf(dma_rd_buf, (msgs + 1), false);  in mtk_i2c_do_transfer()
1006 		writel(msgs->len, i2c->pdmabase + OFFSET_TX_LEN);  in mtk_i2c_do_transfer()
1007 		writel((msgs + 1)->len, i2c->pdmabase + OFFSET_RX_LEN);  in mtk_i2c_do_transfer()
1030 				 msgs->len, DMA_TO_DEVICE);  in mtk_i2c_do_transfer()
1032 		i2c_put_dma_safe_msg_buf(dma_wr_buf, msgs, true);  in mtk_i2c_do_transfer()
1035 				 msgs->len, DMA_FROM_DEVICE);  in mtk_i2c_do_transfer()
1037 		i2c_put_dma_safe_msg_buf(dma_rd_buf, msgs, true);  in mtk_i2c_do_transfer()
1039 		dma_unmap_single(i2c->dev, wpaddr, msgs->len,  in mtk_i2c_do_transfer()
1041 		dma_unmap_single(i2c->dev, rpaddr, (msgs + 1)->len,  in mtk_i2c_do_transfer()
1044 		i2c_put_dma_safe_msg_buf(dma_wr_buf, msgs, true);  in mtk_i2c_do_transfer()
1045 		i2c_put_dma_safe_msg_buf(dma_rd_buf, (msgs + 1), true);  in mtk_i2c_do_transfer()
1049 		dev_dbg(i2c->dev, "addr: %x, transfer timeout\n", msgs->addr);  in mtk_i2c_do_transfer()
1055 		dev_dbg(i2c->dev, "addr: %x, transfer ACK error\n", msgs->addr);  in mtk_i2c_do_transfer()
1064 			    struct i2c_msg msgs[], int num)  in mtk_i2c_transfer()  argument
1078 		if (!(msgs[0].flags & I2C_M_RD) && (msgs[1].flags & I2C_M_RD) &&  in mtk_i2c_transfer()
1079 		    msgs[0].addr == msgs[1].addr) {  in mtk_i2c_transfer()
1094 		if (!msgs->buf) {  in mtk_i2c_transfer()
1100 		if (msgs->flags & I2C_M_RD)  in mtk_i2c_transfer()
1114 		ret = mtk_i2c_do_transfer(i2c, msgs, num, left_num);  in mtk_i2c_transfer()
1118 		msgs++;  in mtk_i2c_transfer()