Commit 47821186 authored by Piotr Wojtaszczyk's avatar Piotr Wojtaszczyk Committed by Miquel Raynal
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mtd: rawnand: lpx32xx: Request DMA channels using DT entries 



Move away from pl08x platform data towards device tree.

Signed-off-by: default avatarPiotr Wojtaszczyk <piotr.wojtaszczyk@timesys.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20240627150046.258795-11-piotr.wojtaszczyk@timesys.com
parent 14427d4b

drivers/mtd/nand/raw/lpc32xx_mlc.c

+15 −11
Original line number Diff line number Diff line
@@ -574,6 +574,9 @@ static int lpc32xx_dma_setup(struct lpc32xx_nand_host *host) 
	struct mtd_info *mtd = nand_to_mtd(&host->nand_chip);

	dma_cap_mask_t mask;



	host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx");

	if (!host->dma_chan) {

		/* fallback to request using platform data */

		if (!host->pdata || !host->pdata->dma_filter) {

			dev_err(mtd->dev.parent, "no DMA platform data\n");

			return -ENOENT;
@@ -581,12 +584,13 @@ static int lpc32xx_dma_setup(struct lpc32xx_nand_host *host) 


		dma_cap_zero(mask);

		dma_cap_set(DMA_SLAVE, mask);

	host->dma_chan = dma_request_channel(mask, host->pdata->dma_filter,

					     "nand-mlc");

		host->dma_chan = dma_request_channel(mask, host->pdata->dma_filter, "nand-mlc");



		if (!host->dma_chan) {

			dev_err(mtd->dev.parent, "Failed to request DMA channel\n");

			return -EBUSY;

		}

	}



	/*

	 * Set direction to a sensible value even if the dmaengine driver

drivers/mtd/nand/raw/lpc32xx_slc.c

+15 −11
Original line number Diff line number Diff line
@@ -721,6 +721,9 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) 
	struct mtd_info *mtd = nand_to_mtd(&host->nand_chip);

	dma_cap_mask_t mask;



	host->dma_chan = dma_request_chan(mtd->dev.parent, "rx-tx");

	if (!host->dma_chan) {

		/* fallback to request using platform data */

		if (!host->pdata || !host->pdata->dma_filter) {

			dev_err(mtd->dev.parent, "no DMA platform data\n");

			return -ENOENT;
@@ -728,12 +731,13 @@ static int lpc32xx_nand_dma_setup(struct lpc32xx_nand_host *host) 


		dma_cap_zero(mask);

		dma_cap_set(DMA_SLAVE, mask);

	host->dma_chan = dma_request_channel(mask, host->pdata->dma_filter,

					     "nand-slc");

		host->dma_chan = dma_request_channel(mask, host->pdata->dma_filter, "nand-slc");



		if (!host->dma_chan) {

			dev_err(mtd->dev.parent, "Failed to request DMA channel\n");

			return -EBUSY;

		}

	}



	return 0;

}