147 				       struct spi_transfer *xfer)  in mtk_spi_slave_fifo_transfer()  argument
155 	if (xfer->rx_buf)  in mtk_spi_slave_fifo_transfer()
157 	if (xfer->tx_buf)  in mtk_spi_slave_fifo_transfer()
161 	cnt = xfer->len / 4;  in mtk_spi_slave_fifo_transfer()
162 	if (xfer->tx_buf)  in mtk_spi_slave_fifo_transfer()
164 			      xfer->tx_buf, cnt);  in mtk_spi_slave_fifo_transfer()
166 	remainder = xfer->len % 4;  in mtk_spi_slave_fifo_transfer()
167 	if (xfer->tx_buf && remainder > 0) {  in mtk_spi_slave_fifo_transfer()
169 		memcpy(&reg_val, xfer->tx_buf + cnt * 4, remainder);  in mtk_spi_slave_fifo_transfer()
184 				      struct spi_transfer *xfer)  in mtk_spi_slave_dma_transfer()  argument
192 	if (xfer->tx_buf) {  in mtk_spi_slave_dma_transfer()
196 		void *nonconst_tx = (void *)xfer->tx_buf;  in mtk_spi_slave_dma_transfer()
198 		xfer->tx_dma = dma_map_single(dev, nonconst_tx,  in mtk_spi_slave_dma_transfer()
199 					      xfer->len, DMA_TO_DEVICE);  in mtk_spi_slave_dma_transfer()
200 		if (dma_mapping_error(dev, xfer->tx_dma)) {  in mtk_spi_slave_dma_transfer()
206 	if (xfer->rx_buf) {  in mtk_spi_slave_dma_transfer()
207 		xfer->rx_dma = dma_map_single(dev, xfer->rx_buf,  in mtk_spi_slave_dma_transfer()
208 					      xfer->len, DMA_FROM_DEVICE);  in mtk_spi_slave_dma_transfer()
209 		if (dma_mapping_error(dev, xfer->rx_dma)) {  in mtk_spi_slave_dma_transfer()
215 	writel(xfer->tx_dma, mdata->base + SPIS_TX_SRC_REG);  in mtk_spi_slave_dma_transfer()
216 	writel(xfer->rx_dma, mdata->base + SPIS_RX_DST_REG);  in mtk_spi_slave_dma_transfer()
222 	if (xfer->tx_buf)  in mtk_spi_slave_dma_transfer()
224 	if (xfer->rx_buf)  in mtk_spi_slave_dma_transfer()
230 	reg_val |= (xfer->len - 1) & TX_DMA_LEN;  in mtk_spi_slave_dma_transfer()
234 	if (xfer->tx_buf)  in mtk_spi_slave_dma_transfer()
236 	if (xfer->rx_buf)  in mtk_spi_slave_dma_transfer()
248 	if (xfer->rx_buf)  in mtk_spi_slave_dma_transfer()
249 		dma_unmap_single(dev, xfer->rx_dma,  in mtk_spi_slave_dma_transfer()
250 				 xfer->len, DMA_FROM_DEVICE);  in mtk_spi_slave_dma_transfer()
253 	if (xfer->tx_buf)  in mtk_spi_slave_dma_transfer()
254 		dma_unmap_single(dev, xfer->tx_dma,  in mtk_spi_slave_dma_transfer()
255 				 xfer->len, DMA_TO_DEVICE);  in mtk_spi_slave_dma_transfer()
267 				      struct spi_transfer *xfer)  in mtk_spi_slave_transfer_one()  argument
273 	mdata->cur_transfer = xfer;  in mtk_spi_slave_transfer_one()
275 	if (xfer->len > MTK_SPI_SLAVE_MAX_FIFO_SIZE)  in mtk_spi_slave_transfer_one()
276 		return mtk_spi_slave_dma_transfer(ctlr, spi, xfer);  in mtk_spi_slave_transfer_one()
278 		return mtk_spi_slave_fifo_transfer(ctlr, spi, xfer);  in mtk_spi_slave_transfer_one()