[PATCH 1/2] mtd: rawnand: lpc32xx_slc: Remove platform data support

[Vladimir Zapolskiy]

Since NXP LPC32xx SoC support in the Linux kernel strictly depends on
device tree support, the unused platform data support can be removed
from the NAND SLC driver.

Signed-off-by: Vladimir Zapolskiy <vz at kernel.org>
---
 drivers/mtd/nand/raw/lpc32xx_slc.c | 21 ++-------------------
 include/linux/mtd/lpc32xx_slc.h    | 17 -----------------
 2 files changed, 2 insertions(+), 36 deletions(-)
 delete mode 100644 include/linux/mtd/lpc32xx_slc.h

diff --git a/drivers/mtd/nand/raw/lpc32xx_slc.c b/drivers/mtd/nand/raw/lpc32xx_slc.c
index 10c8080207f4..b4d90afa9267 100644
--- a/drivers/mtd/nand/raw/lpc32xx_slc.c
+++ b/drivers/mtd/nand/raw/lpc32xx_slc.c
@@ -25,7 +25,6 @@
 #include <linux/dmaengine.h>
 #include <linux/gpio/consumer.h>
 #include <linux/of.h>
-#include <linux/mtd/lpc32xx_slc.h>
 
 #define LPC32XX_MODNAME		"lpc32xx-nand"
 
@@ -213,7 +212,6 @@ struct lpc32xx_nand_cfg_slc {
 
 struct lpc32xx_nand_host {
 	struct nand_chip	nand_chip;
-	struct lpc32xx_slc_platform_data *pdata;
 	struct clk		*clk;
 	struct gpio_desc	*wp_gpio;
 	void __iomem		*io_base;
@@ -727,24 +725,11 @@ static int lpc32xx_nand_write_page_raw_syndrome(struct nand_chip *chip,
 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 (IS_ERR(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;
-		}
-
-		dma_cap_zero(mask);
-		dma_cap_set(DMA_SLAVE, mask);
-		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;
-		}
+		dev_err(mtd->dev.parent, "Failed to request DMA channel\n");
+		return PTR_ERR(host->dma_chan);
 	}
 
 	return 0;
@@ -873,8 +858,6 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
 
 	gpiod_set_consumer_name(host->wp_gpio, "NAND WP");
 
-	host->pdata = dev_get_platdata(&pdev->dev);
-
 	chip = &host->nand_chip;
 	mtd = nand_to_mtd(chip);
 	nand_set_controller_data(chip, host);
diff --git a/include/linux/mtd/lpc32xx_slc.h b/include/linux/mtd/lpc32xx_slc.h
deleted file mode 100644
index a044b806566b..000000000000
--- a/include/linux/mtd/lpc32xx_slc.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Platform data for LPC32xx SoC SLC NAND controller
- *
- * Copyright © 2012 Roland Stigge
- */
-
-#ifndef __LINUX_MTD_LPC32XX_SLC_H
-#define __LINUX_MTD_LPC32XX_SLC_H
-
-#include <linux/dmaengine.h>
-
-struct lpc32xx_slc_platform_data {
-	dma_filter_fn dma_filter;
-};
-
-#endif  /* __LINUX_MTD_LPC32XX_SLC_H */
-- 
2.51.0