Lines Matching refs:master
100 struct spi_master *master;
184 struct sun6i_spi *sspi = spi_master_get_devdata(spi->master);
215 struct spi_master *master = sspi->master;
226 dmaengine_slave_config(master->dma_rx, &rxconf);
228 rxdesc = dmaengine_prep_slave_sg(master->dma_rx,
248 dmaengine_slave_config(master->dma_tx, &txconf);
250 txdesc = dmaengine_prep_slave_sg(master->dma_tx,
257 dmaengine_terminate_sync(master->dma_rx);
264 dma_async_issue_pending(master->dma_rx);
269 dma_async_issue_pending(master->dma_tx);
275 static int sun6i_spi_transfer_one(struct spi_master *master,
279 struct sun6i_spi *sspi = spi_master_get_devdata(master);
296 use_dma = master->can_dma ? master->can_dma(master, spi, tfr) : false;
466 dev_warn(&master->dev,
489 tx_time = spi_controller_xfer_timeout(master, tfr);
505 dev_warn(&master->dev, "RX DMA timeout\n");
511 dev_warn(&master->dev,
521 dmaengine_terminate_sync(master->dma_rx);
522 dmaengine_terminate_sync(master->dma_tx);
567 struct spi_master *master = dev_get_drvdata(dev);
568 struct sun6i_spi *sspi = spi_master_get_devdata(master);
604 struct spi_master *master = dev_get_drvdata(dev);
605 struct sun6i_spi *sspi = spi_master_get_devdata(master);
614 static bool sun6i_spi_can_dma(struct spi_master *master,
618 struct sun6i_spi *sspi = spi_master_get_devdata(master);
630 struct spi_master *master;
635 master = spi_alloc_master(&pdev->dev, sizeof(struct sun6i_spi));
636 if (!master) {
641 platform_set_drvdata(pdev, master);
642 sspi = spi_master_get_devdata(master);
663 sspi->master = master;
666 master->max_speed_hz = 100 * 1000 * 1000;
667 master->min_speed_hz = 3 * 1000;
668 master->use_gpio_descriptors = true;
669 master->set_cs = sun6i_spi_set_cs;
670 master->transfer_one = sun6i_spi_transfer_one;
671 master->num_chipselect = 4;
672 master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LSB_FIRST |
674 master->bits_per_word_mask = SPI_BPW_MASK(8);
675 master->dev.of_node = pdev->dev.of_node;
676 master->auto_runtime_pm = true;
677 master->max_transfer_size = sun6i_spi_max_transfer_size;
703 master->dma_tx = dma_request_chan(&pdev->dev, "tx");
704 if (IS_ERR(master->dma_tx)) {
706 if (PTR_ERR(master->dma_tx) == -EPROBE_DEFER) {
711 master->dma_tx = NULL;
714 master->dma_rx = dma_request_chan(&pdev->dev, "rx");
715 if (IS_ERR(master->dma_rx)) {
716 if (PTR_ERR(master->dma_rx) == -EPROBE_DEFER) {
721 master->dma_rx = NULL;
724 if (master->dma_tx && master->dma_rx) {
727 master->can_dma = sun6i_spi_can_dma;
745 ret = devm_spi_register_master(&pdev->dev, master);
747 dev_err(&pdev->dev, "cannot register SPI master\n");
757 if (master->dma_rx)
758 dma_release_channel(master->dma_rx);
760 if (master->dma_tx)
761 dma_release_channel(master->dma_tx);
763 spi_master_put(master);
769 struct spi_master *master = platform_get_drvdata(pdev);
773 if (master->dma_tx)
774 dma_release_channel(master->dma_tx);
775 if (master->dma_rx)
776 dma_release_channel(master->dma_rx);