Lines Matching refs:rx_prologue
137 int rx_prologue; member
481 bs->rx_prologue = 0; in bcm2835_spi_transfer_prologue()
488 bs->rx_prologue = sg_dma_len(&tfr->rx_sg.sgl[0]) & 3; in bcm2835_spi_transfer_prologue()
490 if (bs->rx_prologue > bs->tx_prologue) { in bcm2835_spi_transfer_prologue()
492 bs->tx_prologue = bs->rx_prologue; in bcm2835_spi_transfer_prologue()
506 if (bs->rx_prologue) { in bcm2835_spi_transfer_prologue()
507 bcm2835_wr(bs, BCM2835_SPI_DLEN, bs->rx_prologue); in bcm2835_spi_transfer_prologue()
510 bcm2835_wr_fifo_count(bs, bs->rx_prologue); in bcm2835_spi_transfer_prologue()
512 bcm2835_rd_fifo_count(bs, bs->rx_prologue); in bcm2835_spi_transfer_prologue()
519 bs->rx_prologue, DMA_FROM_DEVICE); in bcm2835_spi_transfer_prologue()
521 sg_dma_address(&tfr->rx_sg.sgl[0]) += bs->rx_prologue; in bcm2835_spi_transfer_prologue()
522 sg_dma_len(&tfr->rx_sg.sgl[0]) -= bs->rx_prologue; in bcm2835_spi_transfer_prologue()
532 tx_remaining = bs->tx_prologue - bs->rx_prologue; in bcm2835_spi_transfer_prologue()
568 if (bs->rx_prologue) { in bcm2835_spi_undo_prologue()
569 sg_dma_address(&tfr->rx_sg.sgl[0]) -= bs->rx_prologue; in bcm2835_spi_undo_prologue()
570 sg_dma_len(&tfr->rx_sg.sgl[0]) += bs->rx_prologue; in bcm2835_spi_undo_prologue()