344 		struct spi_transfer *xfer)  in rockchip_spi_prepare_irq()  argument
346 	rs->tx = xfer->tx_buf;  in rockchip_spi_prepare_irq()
347 	rs->rx = xfer->rx_buf;  in rockchip_spi_prepare_irq()
348 	rs->tx_left = rs->tx ? xfer->len / rs->n_bytes : 0;  in rockchip_spi_prepare_irq()
349 	rs->rx_left = xfer->len / rs->n_bytes;  in rockchip_spi_prepare_irq()
404 		struct spi_controller *ctlr, struct spi_transfer *xfer)  in rockchip_spi_prepare_dma()  argument
411 	if (xfer->rx_buf) {  in rockchip_spi_prepare_dma()
416 			.src_maxburst = rockchip_spi_calc_burst_size(xfer->len /  in rockchip_spi_prepare_dma()
424 				xfer->rx_sg.sgl, xfer->rx_sg.nents,  in rockchip_spi_prepare_dma()
434 	if (xfer->tx_buf) {  in rockchip_spi_prepare_dma()
446 				xfer->tx_sg.sgl, xfer->tx_sg.nents,  in rockchip_spi_prepare_dma()
478 		struct spi_device *spi, struct spi_transfer *xfer,  in rockchip_spi_config()  argument
497 	if (xfer->rx_buf && xfer->tx_buf)  in rockchip_spi_config()
499 	else if (xfer->rx_buf)  in rockchip_spi_config()
504 	switch (xfer->bits_per_word) {  in rockchip_spi_config()
507 		cr1 = xfer->len - 1;  in rockchip_spi_config()
511 		cr1 = xfer->len - 1;  in rockchip_spi_config()
515 		cr1 = xfer->len / 2 - 1;  in rockchip_spi_config()
523 			xfer->bits_per_word);  in rockchip_spi_config()
528 		if (xfer->tx_buf)  in rockchip_spi_config()
530 		if (xfer->rx_buf)  in rockchip_spi_config()
541 	if (xfer->len < rs->fifo_len)  in rockchip_spi_config()
542 		writel_relaxed(xfer->len - 1, rs->regs + ROCKCHIP_SPI_RXFTLR);  in rockchip_spi_config()
547 	writel_relaxed(rockchip_spi_calc_burst_size(xfer->len / rs->n_bytes) - 1,  in rockchip_spi_config()
555 	writel_relaxed(2 * DIV_ROUND_UP(rs->freq, 2 * xfer->speed_hz),  in rockchip_spi_config()
585 		struct spi_transfer *xfer)  in rockchip_spi_transfer_one()  argument
592 	if (!xfer->len) {  in rockchip_spi_transfer_one()
600 	if (!xfer->tx_buf && !xfer->rx_buf) {  in rockchip_spi_transfer_one()
605 	if (xfer->len > ROCKCHIP_SPI_MAX_TRANLEN) {  in rockchip_spi_transfer_one()
606 		dev_err(rs->dev, "Transfer is too long (%d)\n", xfer->len);  in rockchip_spi_transfer_one()
610 	rs->n_bytes = xfer->bits_per_word <= 8 ? 1 : 2;  in rockchip_spi_transfer_one()
612 	use_dma = ctlr->can_dma ? ctlr->can_dma(ctlr, spi, xfer) : false;  in rockchip_spi_transfer_one()
614 	ret = rockchip_spi_config(rs, spi, xfer, use_dma, ctlr->slave);  in rockchip_spi_transfer_one()
619 		return rockchip_spi_prepare_dma(rs, ctlr, xfer);  in rockchip_spi_transfer_one()
621 	return rockchip_spi_prepare_irq(rs, xfer);  in rockchip_spi_transfer_one()
626 				 struct spi_transfer *xfer)  in rockchip_spi_can_dma()  argument
629 	unsigned int bytes_per_word = xfer->bits_per_word <= 8 ? 1 : 2;  in rockchip_spi_can_dma()
635 	return xfer->len / bytes_per_word >= rs->fifo_len;  in rockchip_spi_can_dma()