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drivers: spi_mcux_lpspi: Create DMA dev helpers

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Create helper functions for duplicated code related to
checking for DMA devices, with readable names.

Also remove unneeded function prototype.

Signed-off-by: Declan Snyder <declan.snyder@nxp.com>
This commit is contained in:
Declan Snyder 2024-09-20 15:42:21 -05:00 • committed by Anas Nashif
commit 5d081c98fb
1 changed files with 35 additions and 17 deletions
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52
drivers/spi/spi_mcux_lpspi.c
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@ -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) {