drivers: spi_mcux_lpspi: Create DMA dev helpers (5d081c98) · Commits · Wenxi XU / zephyr

drivers/spi/spi_mcux_lpspi.c

+35 −17

Original line number	Diff line number	Diff line
		@@ -272,7 +272,10 @@ static int spi_mcux_configure(const struct device *dev, const struct spi_config
		}

		#ifdef CONFIG_SPI_MCUX_LPSPI_DMA
		static int spi_mcux_dma_rxtx_load(const struct device dev, size_t dma_size);
		static bool lpspi_inst_has_dma(const struct spi_mcux_data *data)
		{
		return (data->dma_tx.dma_dev && data->dma_rx.dma_dev);
		}

		/* This function is executed in the interrupt context */
		static void spi_mcux_dma_callback(const struct device dev, void arg, uint32_t channel, int status)
		@@ -550,7 +553,9 @@ out:

		return ret;
		}
		#endif
		#else
		#define lpspi_inst_has_dma(arg) arg != arg
		#endif /* CONFIG_SPI_MCUX_LPSPI_DMA */

		#ifdef CONFIG_SPI_RTIO

		@@ -613,7 +618,7 @@ static int spi_mcux_transceive(const struct device *dev, const struct spi_config
		#ifdef CONFIG_SPI_MCUX_LPSPI_DMA
		const struct spi_mcux_data *data = dev->data;

		if (data->dma_rx.dma_dev && data->dma_tx.dma_dev) {
		if (lpspi_inst_has_dma(data)) {
		return transceive_dma(dev, spi_cfg, tx_bufs, rx_bufs, false, NULL, NULL);
		}
		#endif /* CONFIG_SPI_MCUX_LPSPI_DMA */
		@@ -630,7 +635,7 @@ static int spi_mcux_transceive_async(const struct device *dev, const struct spi_
		#ifdef CONFIG_SPI_MCUX_LPSPI_DMA
		struct spi_mcux_data *data = dev->data;

		if (data->dma_rx.dma_dev && data->dma_tx.dma_dev) {
		if (lpspi_inst_has_dma(data)) {
		spi_context_buffers_setup(&data->ctx, tx_bufs, rx_bufs, 1);
		}

		@@ -749,29 +754,42 @@ static void spi_mcux_iodev_complete(const struct device *dev, int status)

		#endif

		#if defined(CONFIG_SPI_MCUX_LPSPI_DMA)
		static int lpspi_dma_dev_ready(const struct device *dma_dev)
		{
		if (!device_is_ready(dma_dev)) {
		LOG_ERR("%s device is not ready", dma_dev->name);
		return -ENODEV;
		}

		return 0;
		}

		static int lpspi_dma_devs_ready(struct spi_mcux_data *data)
		{
		return lpspi_dma_dev_ready(data->dma_tx.dma_dev) \|
		lpspi_dma_dev_ready(data->dma_rx.dma_dev);
		}
		#else
		#define lpspi_dma_devs_ready(...) 0
		#endif /* CONFIG_SPI_MCUX_LPSPI_DMA */

		static int spi_mcux_init(const struct device *dev)
		{
		const struct spi_mcux_config *config = dev->config;
		struct spi_mcux_data *data = dev->data;
		int err;
		int err = 0;

		DEVICE_MMIO_NAMED_MAP(dev, reg_base, K_MEM_CACHE_NONE \| K_MEM_DIRECT_MAP);

		data->dev = dev;

		#ifdef CONFIG_SPI_MCUX_LPSPI_DMA
		if (data->dma_tx.dma_dev && data->dma_rx.dma_dev) {
		if (!device_is_ready(data->dma_tx.dma_dev)) {
		LOG_ERR("%s device is not ready", data->dma_tx.dma_dev->name);
		return -ENODEV;
		}

		if (!device_is_ready(data->dma_rx.dma_dev)) {
		LOG_ERR("%s device is not ready", data->dma_rx.dma_dev->name);
		return -ENODEV;
		if (IS_ENABLED(CONFIG_SPI_MCUX_LPSPI_DMA) && lpspi_inst_has_dma(data)) {
		err = lpspi_dma_devs_ready(data);
		}
		if (err < 0) {
		return err;
		}
		#endif /* CONFIG_SPI_MCUX_LPSPI_DMA */

		err = spi_context_cs_configure_all(&data->ctx);
		if (err < 0) {

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