Lines Matching refs:controller
175 static bool fsl_lpspi_can_dma(struct spi_controller *controller, in fsl_lpspi_can_dma() argument
181 if (!controller->dma_rx) in fsl_lpspi_can_dma()
198 static int lpspi_prepare_xfer_hardware(struct spi_controller *controller) in lpspi_prepare_xfer_hardware() argument
201 spi_controller_get_devdata(controller); in lpspi_prepare_xfer_hardware()
213 static int lpspi_unprepare_xfer_hardware(struct spi_controller *controller) in lpspi_unprepare_xfer_hardware() argument
216 spi_controller_get_devdata(controller); in lpspi_unprepare_xfer_hardware()
332 static int fsl_lpspi_dma_configure(struct spi_controller *controller) in fsl_lpspi_dma_configure() argument
338 spi_controller_get_devdata(controller); in fsl_lpspi_dma_configure()
358 ret = dmaengine_slave_config(controller->dma_tx, &tx); in fsl_lpspi_dma_configure()
369 ret = dmaengine_slave_config(controller->dma_rx, &rx); in fsl_lpspi_dma_configure()
412 static int fsl_lpspi_setup_transfer(struct spi_controller *controller, in fsl_lpspi_setup_transfer() argument
417 spi_controller_get_devdata(spi->controller); in fsl_lpspi_setup_transfer()
452 if (fsl_lpspi_can_dma(controller, spi, t)) in fsl_lpspi_setup_transfer()
460 static int fsl_lpspi_slave_abort(struct spi_controller *controller) in fsl_lpspi_slave_abort() argument
463 spi_controller_get_devdata(controller); in fsl_lpspi_slave_abort()
476 static int fsl_lpspi_wait_for_completion(struct spi_controller *controller) in fsl_lpspi_wait_for_completion() argument
479 spi_controller_get_devdata(controller); in fsl_lpspi_wait_for_completion()
546 static int fsl_lpspi_dma_transfer(struct spi_controller *controller, in fsl_lpspi_dma_transfer() argument
556 ret = fsl_lpspi_dma_configure(controller); in fsl_lpspi_dma_transfer()
560 desc_rx = dmaengine_prep_slave_sg(controller->dma_rx, in fsl_lpspi_dma_transfer()
570 dma_async_issue_pending(controller->dma_rx); in fsl_lpspi_dma_transfer()
572 desc_tx = dmaengine_prep_slave_sg(controller->dma_tx, in fsl_lpspi_dma_transfer()
576 dmaengine_terminate_all(controller->dma_tx); in fsl_lpspi_dma_transfer()
584 dma_async_issue_pending(controller->dma_tx); in fsl_lpspi_dma_transfer()
597 dmaengine_terminate_all(controller->dma_tx); in fsl_lpspi_dma_transfer()
598 dmaengine_terminate_all(controller->dma_rx); in fsl_lpspi_dma_transfer()
607 dmaengine_terminate_all(controller->dma_tx); in fsl_lpspi_dma_transfer()
608 dmaengine_terminate_all(controller->dma_rx); in fsl_lpspi_dma_transfer()
617 dmaengine_terminate_all(controller->dma_tx); in fsl_lpspi_dma_transfer()
618 dmaengine_terminate_all(controller->dma_rx); in fsl_lpspi_dma_transfer()
627 dmaengine_terminate_all(controller->dma_tx); in fsl_lpspi_dma_transfer()
628 dmaengine_terminate_all(controller->dma_rx); in fsl_lpspi_dma_transfer()
639 static void fsl_lpspi_dma_exit(struct spi_controller *controller) in fsl_lpspi_dma_exit() argument
641 if (controller->dma_rx) { in fsl_lpspi_dma_exit()
642 dma_release_channel(controller->dma_rx); in fsl_lpspi_dma_exit()
643 controller->dma_rx = NULL; in fsl_lpspi_dma_exit()
646 if (controller->dma_tx) { in fsl_lpspi_dma_exit()
647 dma_release_channel(controller->dma_tx); in fsl_lpspi_dma_exit()
648 controller->dma_tx = NULL; in fsl_lpspi_dma_exit()
654 struct spi_controller *controller) in fsl_lpspi_dma_init() argument
659 controller->dma_tx = dma_request_chan(dev, "tx"); in fsl_lpspi_dma_init()
660 if (IS_ERR(controller->dma_tx)) { in fsl_lpspi_dma_init()
661 ret = PTR_ERR(controller->dma_tx); in fsl_lpspi_dma_init()
663 controller->dma_tx = NULL; in fsl_lpspi_dma_init()
668 controller->dma_rx = dma_request_chan(dev, "rx"); in fsl_lpspi_dma_init()
669 if (IS_ERR(controller->dma_rx)) { in fsl_lpspi_dma_init()
670 ret = PTR_ERR(controller->dma_rx); in fsl_lpspi_dma_init()
672 controller->dma_rx = NULL; in fsl_lpspi_dma_init()
678 controller->can_dma = fsl_lpspi_can_dma; in fsl_lpspi_dma_init()
679 controller->max_dma_len = FSL_LPSPI_MAX_EDMA_BYTES; in fsl_lpspi_dma_init()
683 fsl_lpspi_dma_exit(controller); in fsl_lpspi_dma_init()
687 static int fsl_lpspi_pio_transfer(struct spi_controller *controller, in fsl_lpspi_pio_transfer() argument
691 spi_controller_get_devdata(controller); in fsl_lpspi_pio_transfer()
703 ret = fsl_lpspi_wait_for_completion(controller); in fsl_lpspi_pio_transfer()
712 static int fsl_lpspi_transfer_one(struct spi_controller *controller, in fsl_lpspi_transfer_one() argument
717 spi_controller_get_devdata(controller); in fsl_lpspi_transfer_one()
721 ret = fsl_lpspi_setup_transfer(controller, spi, t); in fsl_lpspi_transfer_one()
729 ret = fsl_lpspi_dma_transfer(controller, fsl_lpspi, t); in fsl_lpspi_transfer_one()
731 ret = fsl_lpspi_pio_transfer(controller, t); in fsl_lpspi_transfer_one()
773 struct spi_controller *controller = dev_get_drvdata(dev); in fsl_lpspi_runtime_resume() local
777 fsl_lpspi = spi_controller_get_devdata(controller); in fsl_lpspi_runtime_resume()
794 struct spi_controller *controller = dev_get_drvdata(dev); in fsl_lpspi_runtime_suspend() local
797 fsl_lpspi = spi_controller_get_devdata(controller); in fsl_lpspi_runtime_suspend()
820 struct spi_controller *controller; in fsl_lpspi_probe() local
828 controller = spi_alloc_slave(&pdev->dev, in fsl_lpspi_probe()
831 controller = spi_alloc_master(&pdev->dev, in fsl_lpspi_probe()
834 if (!controller) in fsl_lpspi_probe()
837 platform_set_drvdata(pdev, controller); in fsl_lpspi_probe()
839 fsl_lpspi = spi_controller_get_devdata(controller); in fsl_lpspi_probe()
848 controller->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 32); in fsl_lpspi_probe()
849 controller->transfer_one = fsl_lpspi_transfer_one; in fsl_lpspi_probe()
850 controller->prepare_transfer_hardware = lpspi_prepare_xfer_hardware; in fsl_lpspi_probe()
851 controller->unprepare_transfer_hardware = lpspi_unprepare_xfer_hardware; in fsl_lpspi_probe()
852 controller->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; in fsl_lpspi_probe()
853 controller->flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX; in fsl_lpspi_probe()
854 controller->dev.of_node = pdev->dev.of_node; in fsl_lpspi_probe()
855 controller->bus_num = pdev->id; in fsl_lpspi_probe()
856 controller->num_chipselect = fsl_lpspi->num_cs; in fsl_lpspi_probe()
857 controller->slave_abort = fsl_lpspi_slave_abort; in fsl_lpspi_probe()
859 controller->use_gpio_descriptors = true; in fsl_lpspi_probe()
910 ret = fsl_lpspi_dma_init(&pdev->dev, fsl_lpspi, controller); in fsl_lpspi_probe()
917 ret = devm_spi_register_controller(&pdev->dev, controller); in fsl_lpspi_probe()
929 fsl_lpspi_dma_exit(controller); in fsl_lpspi_probe()
935 spi_controller_put(controller); in fsl_lpspi_probe()
942 struct spi_controller *controller = platform_get_drvdata(pdev); in fsl_lpspi_remove() local
944 spi_controller_get_devdata(controller); in fsl_lpspi_remove()
946 fsl_lpspi_dma_exit(controller); in fsl_lpspi_remove()