mtd: rawnand: davinci: Stop using nand_chip.legacy.IO_ADDR_{R, W}

We can use info->current_cs directly instead of doing this weird
IO_ADDR_{R,W} re-assignment dance.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Tested-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200513172248.141402-2-boris.brezillon@collabora.com

drivers/mtd/nand/raw/davinci_nand.c

@@ -91,18 +91,13 @@ static void nand_davinci_hwcontrol(struct nand_chip *nand, int cmd,
 	struct davinci_nand_info *info = to_davinci_nand(nand_to_mtd(nand));
 	void __iomem			*addr = info->current_cs;
 
-	/* Did the control lines change? */
-	if (ctrl & NAND_CTRL_CHANGE) {
-		if ((ctrl & NAND_CTRL_CLE) == NAND_CTRL_CLE)
+	if (ctrl & NAND_CTRL_CLE)
 		addr += info->mask_cle;
-		else if ((ctrl & NAND_CTRL_ALE) == NAND_CTRL_ALE)
+	else if (ctrl & NAND_CTRL_ALE)
 		addr += info->mask_ale;
 
-		nand->legacy.IO_ADDR_W = addr;
-	}
-
 	if (cmd != NAND_CMD_NONE)
-		iowrite8(cmd, nand->legacy.IO_ADDR_W);
+		iowrite8(cmd, addr);
 }
 
 static void nand_davinci_select_chip(struct nand_chip *nand, int chip)
@@ -114,9 +109,6 @@ static void nand_davinci_select_chip(struct nand_chip *nand, int chip)
 	/* maybe kick in a second chipselect */
 	if (chip > 0)
 		info->current_cs += info->mask_chipsel;
-
-	info->chip.legacy.IO_ADDR_W = info->current_cs;
-	info->chip.legacy.IO_ADDR_R = info->chip.legacy.IO_ADDR_W;
 }
 
 /*----------------------------------------------------------------------*/
@@ -425,23 +417,27 @@ static int nand_davinci_correct_4bit(struct nand_chip *chip, u_char *data,
 static void nand_davinci_read_buf(struct nand_chip *chip, uint8_t *buf,
 				  int len)
 {
+	struct davinci_nand_info *info = to_davinci_nand(nand_to_mtd(chip));
+
 	if ((0x03 & ((uintptr_t)buf)) == 0 && (0x03 & len) == 0)
-		ioread32_rep(chip->legacy.IO_ADDR_R, buf, len >> 2);
+		ioread32_rep(info->current_cs, buf, len >> 2);
 	else if ((0x01 & ((uintptr_t)buf)) == 0 && (0x01 & len) == 0)
-		ioread16_rep(chip->legacy.IO_ADDR_R, buf, len >> 1);
+		ioread16_rep(info->current_cs, buf, len >> 1);
 	else
-		ioread8_rep(chip->legacy.IO_ADDR_R, buf, len);
+		ioread8_rep(info->current_cs, buf, len);
 }
 
 static void nand_davinci_write_buf(struct nand_chip *chip, const uint8_t *buf,
 				   int len)
 {
+	struct davinci_nand_info *info = to_davinci_nand(nand_to_mtd(chip));
+
 	if ((0x03 & ((uintptr_t)buf)) == 0 && (0x03 & len) == 0)
-		iowrite32_rep(chip->legacy.IO_ADDR_R, buf, len >> 2);
+		iowrite32_rep(info->current_cs, buf, len >> 2);
 	else if ((0x01 & ((uintptr_t)buf)) == 0 && (0x01 & len) == 0)
-		iowrite16_rep(chip->legacy.IO_ADDR_R, buf, len >> 1);
+		iowrite16_rep(info->current_cs, buf, len >> 1);
 	else
-		iowrite8_rep(chip->legacy.IO_ADDR_R, buf, len);
+		iowrite8_rep(info->current_cs, buf, len);
 }
 
 /*
@@ -747,8 +743,6 @@ static int nand_davinci_probe(struct platform_device *pdev)
 	mtd->dev.parent		= &pdev->dev;
 	nand_set_flash_node(&info->chip, pdev->dev.of_node);
 
-	info->chip.legacy.IO_ADDR_R	= vaddr;
-	info->chip.legacy.IO_ADDR_W	= vaddr;
 	info->chip.legacy.chip_delay	= 0;
 	info->chip.legacy.select_chip	= nand_davinci_select_chip;