C++ (Cpp) spi_imx_pio_transfer Beispiele

Beispiel #1

Datei: spi-imx.c Projekt: acton393/linux

static int spi_imx_transfer(struct spi_device *spi,
				struct spi_transfer *transfer)
{
	struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master);

	if (spi_imx->usedma)
		return spi_imx_dma_transfer(spi_imx, transfer);
	else
		return spi_imx_pio_transfer(spi, transfer);
}

Beispiel #2

Datei: spi-imx.c Projekt: GAXUSXX/G935FGaXusKernel2

static int spi_imx_transfer(struct spi_device *spi,
				struct spi_transfer *transfer)
{
	int ret;
	struct spi_imx_data *spi_imx = spi_master_get_devdata(spi->master);

	if (spi_imx->bitbang.master->can_dma &&
	    spi_imx_can_dma(spi_imx->bitbang.master, spi, transfer)) {
		spi_imx->usedma = true;
		ret = spi_imx_dma_transfer(spi_imx, transfer);
		if (ret != -EAGAIN)
			return ret;
	}
	spi_imx->usedma = false;

	return spi_imx_pio_transfer(spi, transfer);
}