linux-kernel - [Patch v4 08/10] mtd: rawnand: lpx32xx: Request DMA channels using DT entries

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Message-Id: <20240620175657.358273-9-piotr.wojtaszczyk@timesys.com>
Date: Thu, 20 Jun 2024 19:56:39 +0200
From: Piotr Wojtaszczyk <piotr.wojtaszczyk@...esys.com>
To: Vinod Koul <vkoul@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	"J.M.B. Downing" <jonathan.downing@...tel.com>,
	Piotr Wojtaszczyk <piotr.wojtaszczyk@...esys.com>,
	Vladimir Zapolskiy <vz@...ia.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Russell King <linux@...linux.org.uk>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Andi Shyti <andi.shyti@...nel.org>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Arnd Bergmann <arnd@...db.de>,
	Yangtao Li <frank.li@...o.com>,
	Li Zetao <lizetao1@...wei.com>,
	Chancel Liu <chancel.liu@....com>,
	Michael Ellerman <mpe@...erman.id.au>,
	dmaengine@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	alsa-devel@...a-project.org,
	linuxppc-dev@...ts.ozlabs.org,
	linux-sound@...r.kernel.org,
	linux-clk@...r.kernel.org,
	linux-i2c@...r.kernel.org,
	linux-mtd@...ts.infradead.org
Cc: Markus Elfring <Markus.Elfring@....de>
Subject: [Patch v4 08/10] mtd: rawnand: lpx32xx: Request DMA channels using DT entries

Move away from pl08x platform data towards device tree.

Signed-off-by: Piotr Wojtaszczyk <piotr.wojtaszczyk@...esys.com>
---
Changes for v4:
- This patch is new in v4

 drivers/mtd/nand/raw/lpc32xx_mlc.c | 10 +---------
 drivers/mtd/nand/raw/lpc32xx_slc.c | 10 +---------
 2 files changed, 2 insertions(+), 18 deletions(-)

diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c
index 677fcb03f9be..e504e3c5af11 100644
--- a/drivers/mtd/nand/raw/lpc32xx_mlc.c
+++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c
@@ -574,15 +574,7 @@ 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;
 
-	if (!host->pdata || !host->pdata->dma_filter) {
-		dev_err(mtd->dev.parent, "no DMA platform data\n");
-		return -ENOENT;
-	}
-
-	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_chan(mtd->dev.parent, "rx-tx");
 	if (!host->dma_chan) {
 		dev_err(mtd->dev.parent, "Failed to request DMA channel\n");
 		return -EBUSY;
diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c
index 1c5fa855b9f2..f83a31411bde 100644
--- a/drivers/mtd/nand/raw/lpc32xx_slc.c
+++ b/drivers/mtd/nand/raw/lpc32xx_slc.c
@@ -721,15 +721,7 @@ 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;
 
-	if (!host->pdata || !host->pdata->dma_filter) {
-		dev_err(mtd->dev.parent, "no DMA platform data\n");
-		return -ENOENT;
-	}
-
-	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_chan(mtd->dev.parent, "rx-tx");
 	if (!host->dma_chan) {
 		dev_err(mtd->dev.parent, "Failed to request DMA channel\n");
 		return -EBUSY;
-- 
2.25.1