drivers: spi: mcux_flexcomm: wait for specific dma tx status. (ff5afd8a) · Commits · Wenxi XU / zephyr

drivers/spi/spi_mcux_flexcomm.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -54,6 +54,7 @@ struct stream {
		uint32_t channel; /* stores the channel for dma */
		struct dma_config dma_cfg;
		struct dma_block_config dma_blk_cfg[2];
		int wait_for_dma_status;
		};
		#endif

		@@ -314,6 +315,9 @@ static void spi_mcux_dma_callback(const struct device dev, void arg,
		} else {
		/* identify the origin of this callback */
		if (channel == data->dma_tx.channel) {
		if (status != data->dma_tx.wait_for_dma_status) {
		return;
		}
		/* this part of the transfer ends */
		data->status_flags \|= SPI_MCUX_FLEXCOMM_DMA_TX_DONE_FLAG;
		} else if (channel == data->dma_rx.channel) {
		@@ -418,12 +422,14 @@ static int spi_mcux_dma_tx_load(const struct device dev, const uint8_t buf,
		blk_cfg->block_size = sizeof(uint32_t);
		blk_cfg->source_addr_adj = DMA_ADDR_ADJ_NO_CHANGE;
		blk_cfg->dest_addr_adj = DMA_ADDR_ADJ_NO_CHANGE;
		data->dma_tx.wait_for_dma_status = DMA_STATUS_COMPLETE;
		} else {
		blk_cfg->source_address = (uint32_t)&data->dummy_tx_buffer;
		blk_cfg->dest_address = (uint32_t)&base->FIFOWR;
		blk_cfg->block_size = len;
		blk_cfg->source_addr_adj = DMA_ADDR_ADJ_NO_CHANGE;
		blk_cfg->dest_addr_adj = DMA_ADDR_ADJ_NO_CHANGE;
		data->dma_tx.wait_for_dma_status = DMA_STATUS_BLOCK;
		}
		} else {
		if (last_packet) {
		@@ -449,10 +455,12 @@ static int spi_mcux_dma_tx_load(const struct device dev, const uint8_t buf,
		blk_cfg->block_size = sizeof(uint32_t);
		blk_cfg->source_addr_adj = DMA_ADDR_ADJ_NO_CHANGE;
		blk_cfg->dest_addr_adj = DMA_ADDR_ADJ_NO_CHANGE;
		data->dma_tx.wait_for_dma_status = DMA_STATUS_COMPLETE;
		} else {
		blk_cfg->source_address = (uint32_t)buf;
		blk_cfg->dest_address = (uint32_t)&base->FIFOWR;
		blk_cfg->block_size = len;
		data->dma_tx.wait_for_dma_status = DMA_STATUS_BLOCK;
		}
		}

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