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drivers: spi_mcux_lpspi: add support dma per instance

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Currently, the driver imply understand that all instances
will use dma when CONFIG_SPI_MCUX_LPSPI_DMA is set. There
might be an instance doesn't need DMA, so instead of enforce
spi_transceive API to use DMA, add more flexible to enable
DMA only when required

Signed-off-by: Dat Nguyen Duy <dat.nguyenduy@nxp.com>
This commit is contained in:
Dat Nguyen Duy 2023-06-15 15:48:19 +07:00 • committed by Carles Cufí
commit 910d417a92
1 changed files with 50 additions and 39 deletions
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21
drivers/spi/spi_mcux_lpspi.c
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@ -472,7 +472,7 @@ out:
return ret;
}
#else
#endif
static int transceive(const struct device *dev,
const struct spi_config *spi_cfg,
@ -505,7 +505,6 @@ out:
return ret;
}
#endif /*CONFIG_SPI_MCUX_LPSPI_DMA */
static int spi_mcux_transceive(const struct device *dev,
const struct spi_config *spi_cfg,
@ -513,10 +512,14 @@ static int spi_mcux_transceive(const struct device *dev,
const struct spi_buf_set *rx_bufs)
{
#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) {
return transceive_dma(dev, spi_cfg, tx_bufs, rx_bufs, false, NULL, NULL);
#else
return transceive(dev, spi_cfg, tx_bufs, rx_bufs, false, NULL, NULL);
}
#endif /* CONFIG_SPI_MCUX_LPSPI_DMA */
return transceive(dev, spi_cfg, tx_bufs, rx_bufs, false, NULL, NULL);
}
#ifdef CONFIG_SPI_ASYNC
@ -559,6 +562,7 @@ static int spi_mcux_init(const struct device *dev)
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;
@ -568,6 +572,7 @@ static int spi_mcux_init(const struct device *dev)
LOG_ERR("%s device is not ready", data->dma_rx.dma_dev->name);
return -ENODEV;
}
}
#endif /* CONFIG_SPI_MCUX_LPSPI_DMA */
err = pinctrl_apply_state(config->pincfg, PINCTRL_STATE_DEFAULT);
@ -590,6 +595,8 @@ static const struct spi_driver_api spi_mcux_driver_api = {
#ifdef CONFIG_SPI_MCUX_LPSPI_DMA
#define SPI_DMA_CHANNELS(n) \
IF_ENABLED(DT_INST_DMAS_HAS_NAME(n, tx), \
( \
.dma_tx = { \
.dma_dev = DEVICE_DT_GET(DT_INST_DMAS_CTLR_BY_NAME(n, tx)), \
.channel = \
@ -603,6 +610,9 @@ static const struct spi_driver_api spi_mcux_driver_api = {
.dma_slot = DT_INST_DMAS_CELL_BY_NAME(n, tx, source) \
} \
}, \
)) \
IF_ENABLED(DT_INST_DMAS_HAS_NAME(n, rx), \
( \
.dma_rx = { \
.dma_dev = DEVICE_DT_GET(DT_INST_DMAS_CTLR_BY_NAME(n, rx)), \
.channel = \
@ -615,7 +625,8 @@ static const struct spi_driver_api spi_mcux_driver_api = {
.block_count = 1, \
.dma_slot = DT_INST_DMAS_CELL_BY_NAME(n, rx, source) \
} \
}
} \
))
#else
#define SPI_DMA_CHANNELS(n)
#endif /* CONFIG_SPI_MCUX_LPSPI_DMA */