[U-Boot] [PATCH 1/3] at91: atmel_nand: extract HWECC initialization code into one function: atmel_hw_nand_init_param().

[Josh Wu]

Extract the hwecc initialization code into one function. It is a preparation for adding atmel PMECC support.

Signed-off-by: Josh Wu <josh.wu at atmel.com>
---
 drivers/mtd/nand/atmel_nand.c |  108 ++++++++++++++++++++++-------------------
 1 file changed, 57 insertions(+), 51 deletions(-)

diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index de66382..113da93 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -232,68 +232,19 @@ static int atmel_nand_correct(struct mtd_info *mtd, u_char *dat,
 static void atmel_nand_hwctl(struct mtd_info *mtd, int mode)
 {
 }
-#endif
-
-static void at91_nand_hwcontrol(struct mtd_info *mtd,
-					 int cmd, unsigned int ctrl)
-{
-	struct nand_chip *this = mtd->priv;
-
-	if (ctrl & NAND_CTRL_CHANGE) {
-		ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
-		IO_ADDR_W &= ~(CONFIG_SYS_NAND_MASK_ALE
-			     | CONFIG_SYS_NAND_MASK_CLE);
-
-		if (ctrl & NAND_CLE)
-			IO_ADDR_W |= CONFIG_SYS_NAND_MASK_CLE;
-		if (ctrl & NAND_ALE)
-			IO_ADDR_W |= CONFIG_SYS_NAND_MASK_ALE;
-
-#ifdef CONFIG_SYS_NAND_ENABLE_PIN
-		at91_set_gpio_value(CONFIG_SYS_NAND_ENABLE_PIN,
-				    !(ctrl & NAND_NCE));
-#endif
-		this->IO_ADDR_W = (void *) IO_ADDR_W;
-	}
-
-	if (cmd != NAND_CMD_NONE)
-		writeb(cmd, this->IO_ADDR_W);
-}
 
-#ifdef CONFIG_SYS_NAND_READY_PIN
-static int at91_nand_ready(struct mtd_info *mtd)
+int atmel_hw_nand_init_param(struct nand_chip *nand)
 {
-	return at91_get_gpio_value(CONFIG_SYS_NAND_READY_PIN);
-}
-#endif
-
-int board_nand_init(struct nand_chip *nand)
-{
-#ifdef CONFIG_ATMEL_NAND_HWECC
 	static int chip_nr = 0;
 	struct mtd_info *mtd;
-#endif
-
-	nand->ecc.mode = NAND_ECC_SOFT;
-#ifdef CONFIG_SYS_NAND_DBW_16
-	nand->options = NAND_BUSWIDTH_16;
-#endif
-	nand->cmd_ctrl = at91_nand_hwcontrol;
-#ifdef CONFIG_SYS_NAND_READY_PIN
-	nand->dev_ready = at91_nand_ready;
-#endif
-	nand->chip_delay = 20;
 
-#ifdef CONFIG_ATMEL_NAND_HWECC
 	nand->ecc.mode = NAND_ECC_HW;
 	nand->ecc.calculate = atmel_nand_calculate;
 	nand->ecc.correct = atmel_nand_correct;
 	nand->ecc.hwctl = atmel_nand_hwctl;
 	nand->ecc.read_page = atmel_nand_read_page;
 	nand->ecc.bytes = 4;
-#endif
 
-#ifdef CONFIG_ATMEL_NAND_HWECC
 	mtd = &nand_info[chip_nr++];
 	mtd->priv = nand;
 
@@ -339,7 +290,62 @@ int board_nand_init(struct nand_chip *nand)
 			break;
 		}
 	}
-#endif
 
 	return 0;
 }
+
+#endif
+
+static void at91_nand_hwcontrol(struct mtd_info *mtd,
+					 int cmd, unsigned int ctrl)
+{
+	struct nand_chip *this = mtd->priv;
+
+	if (ctrl & NAND_CTRL_CHANGE) {
+		ulong IO_ADDR_W = (ulong) this->IO_ADDR_W;
+		IO_ADDR_W &= ~(CONFIG_SYS_NAND_MASK_ALE
+			     | CONFIG_SYS_NAND_MASK_CLE);
+
+		if (ctrl & NAND_CLE)
+			IO_ADDR_W |= CONFIG_SYS_NAND_MASK_CLE;
+		if (ctrl & NAND_ALE)
+			IO_ADDR_W |= CONFIG_SYS_NAND_MASK_ALE;
+
+#ifdef CONFIG_SYS_NAND_ENABLE_PIN
+		at91_set_gpio_value(CONFIG_SYS_NAND_ENABLE_PIN,
+				    !(ctrl & NAND_NCE));
+#endif
+		this->IO_ADDR_W = (void *) IO_ADDR_W;
+	}
+
+	if (cmd != NAND_CMD_NONE)
+		writeb(cmd, this->IO_ADDR_W);
+}
+
+#ifdef CONFIG_SYS_NAND_READY_PIN
+static int at91_nand_ready(struct mtd_info *mtd)
+{
+	return at91_get_gpio_value(CONFIG_SYS_NAND_READY_PIN);
+}
+#endif
+
+int board_nand_init(struct nand_chip *nand)
+{
+	int res = 0;
+
+	nand->ecc.mode = NAND_ECC_SOFT;
+#ifdef CONFIG_SYS_NAND_DBW_16
+	nand->options = NAND_BUSWIDTH_16;
+#endif
+	nand->cmd_ctrl = at91_nand_hwcontrol;
+#ifdef CONFIG_SYS_NAND_READY_PIN
+	nand->dev_ready = at91_nand_ready;
+#endif
+	nand->chip_delay = 20;
+
+#ifdef CONFIG_ATMEL_NAND_HWECC
+	res = atmel_hw_nand_init_param(nand);
+#endif
+
+	return res;
+}
-- 
1.7.9.5