226 	struct spi_transfer *xfer; /* Store xfer temporarily */  member
420 				    struct spi_transfer *xfer)  in rockchip_spi_prepare_irq()  argument
422 	rs->tx_left = rs->tx ? xfer->len / rs->n_bytes : 0;  in rockchip_spi_prepare_irq()
423 	rs->rx_left = xfer->len / rs->n_bytes;  in rockchip_spi_prepare_irq()
491 		struct spi_controller *ctlr, struct spi_transfer *xfer)  in rockchip_spi_prepare_dma()  argument
498 	if (xfer->rx_buf) {  in rockchip_spi_prepare_dma()
503 			.src_maxburst = rockchip_spi_calc_burst_size(xfer->len / rs->n_bytes),  in rockchip_spi_prepare_dma()
510 				xfer->rx_sg.sgl, xfer->rx_sg.nents,  in rockchip_spi_prepare_dma()
520 	if (xfer->tx_buf) {  in rockchip_spi_prepare_dma()
532 				xfer->tx_sg.sgl, xfer->tx_sg.nents,  in rockchip_spi_prepare_dma()
567 		struct spi_controller *ctlr, struct spi_transfer *xfer)  in rockchip_spi_pio_transfer()  argument
570 	u32 speed_hz = xfer->speed_hz;  in rockchip_spi_pio_transfer()
577 	ms = 8LL * 1000LL * xfer->len;  in rockchip_spi_pio_transfer()
586 	rs->tx_left = rs->tx ? xfer->len / rs->n_bytes : 0;  in rockchip_spi_pio_transfer()
587 	rs->rx_left = rs->rx ? xfer->len / rs->n_bytes : 0;  in rockchip_spi_pio_transfer()
617 		struct spi_device *spi, struct spi_transfer *xfer,  in rockchip_spi_config()  argument
639 	if (xfer->rx_buf && xfer->tx_buf) {  in rockchip_spi_config()
641 	} else if (xfer->rx_buf) {  in rockchip_spi_config()
643 	} else if (xfer->tx_buf) {  in rockchip_spi_config()
657 	switch (xfer->bits_per_word) {  in rockchip_spi_config()
660 		cr1 = xfer->len - 1;  in rockchip_spi_config()
664 		cr1 = xfer->len - 1;  in rockchip_spi_config()
668 		cr1 = xfer->len / 2 - 1;  in rockchip_spi_config()
676 			xfer->bits_per_word);  in rockchip_spi_config()
681 		if (xfer->tx_buf)  in rockchip_spi_config()
683 		if (xfer->rx_buf)  in rockchip_spi_config()
707 	if ((xfer->len / rs->n_bytes) < rs->fifo_len)  in rockchip_spi_config()
708 		writel_relaxed(xfer->len / rs->n_bytes - 1, rs->regs + ROCKCHIP_SPI_RXFTLR);  in rockchip_spi_config()
713 	writel_relaxed(rockchip_spi_calc_burst_size(xfer->len / rs->n_bytes) - 1,  in rockchip_spi_config()
717 	if (rs->max_baud_div_in_cpha && xfer->speed_hz != rs->speed_hz) {  in rockchip_spi_config()
719 		if (rs->freq < 2 * xfer->speed_hz) {  in rockchip_spi_config()
720 			clk_set_rate(rs->spiclk, 2 * xfer->speed_hz);  in rockchip_spi_config()
724 …if ((spi->mode & SPI_CPHA) && (DIV_ROUND_UP(rs->freq, xfer->speed_hz) > rs->max_baud_div_in_cpha))…  in rockchip_spi_config()
725 			clk_set_rate(rs->spiclk, rs->max_baud_div_in_cpha * xfer->speed_hz);  in rockchip_spi_config()
734 	writel_relaxed(2 * DIV_ROUND_UP(rs->freq, 2 * xfer->speed_hz),  in rockchip_spi_config()
736 	rs->speed_hz = xfer->speed_hz;  in rockchip_spi_config()
763 				      struct spi_transfer *xfer)  in rockchip_spi_transfer_wait()  argument
766 	u32 speed_hz = xfer->speed_hz;  in rockchip_spi_transfer_wait()
783 		ms = 8LL * 1000LL * xfer->len;  in rockchip_spi_transfer_wait()
805 		struct spi_transfer *xfer)  in rockchip_spi_transfer_one()  argument
813 	if (!xfer->len) {  in rockchip_spi_transfer_one()
821 	if (!xfer->tx_buf && !xfer->rx_buf) {  in rockchip_spi_transfer_one()
826 	if (xfer->len > ROCKCHIP_SPI_MAX_TRANLEN) {  in rockchip_spi_transfer_one()
827 		dev_err(rs->dev, "Transfer is too long (%d)\n", xfer->len);  in rockchip_spi_transfer_one()
831 	rs->n_bytes = xfer->bits_per_word <= 8 ? 1 : 2;  in rockchip_spi_transfer_one()
832 	rs->xfer = xfer;  in rockchip_spi_transfer_one()
836 		use_dma = ctlr->can_dma ? ctlr->can_dma(ctlr, spi, xfer) : false;  in rockchip_spi_transfer_one()
843 	ret = rockchip_spi_config(rs, spi, xfer, xfer_mode, ctlr->slave);  in rockchip_spi_transfer_one()
847 	rs->tx = xfer->tx_buf;  in rockchip_spi_transfer_one()
848 	rs->rx = xfer->rx_buf;  in rockchip_spi_transfer_one()
854 		ret = rockchip_spi_pio_transfer(rs, ctlr, xfer);  in rockchip_spi_transfer_one()
857 		ret = rockchip_spi_prepare_dma(rs, ctlr, xfer);  in rockchip_spi_transfer_one()
860 		ret = rockchip_spi_prepare_irq(rs, ctlr, xfer);  in rockchip_spi_transfer_one()
870 		ret = rockchip_spi_transfer_wait(ctlr, xfer);  in rockchip_spi_transfer_one()
880 				 struct spi_transfer *xfer)  in rockchip_spi_can_dma()  argument
883 	unsigned int bytes_per_word = xfer->bits_per_word <= 8 ? 1 : 2;  in rockchip_spi_can_dma()
889 	return xfer->len / bytes_per_word >= rs->fifo_len;  in rockchip_spi_can_dma()