[PATCH v3 2/3] mtd: rawnand: meson: refactor use of 'meson_nfc_cmd_access()'

[Arseniy Krasnov]

Move call 'meson_nfc_cmd_seed()' and check for 'NAND_NEED_SCRAMBLING'
to 'meson_nfc_cmd_access()', thus removing code duplication.

Signed-off-by: Arseniy Krasnov <avkrasnov at salutedevices.com>
Reviewed-by: Michael Trimarchi <michael at amarulasolutions.com>
---
 Changelog:                                                             
 v2 -> v3:                                                              
  * Declare 'scrambler' as 'unsigned int'.

 drivers/mtd/nand/raw/meson_nand.c | 30 ++++++++++++------------------
 1 file changed, 12 insertions(+), 18 deletions(-)

diff --git a/drivers/mtd/nand/raw/meson_nand.c b/drivers/mtd/nand/raw/meson_nand.c
index 12499a7947..2d77ee51ce 100644
--- a/drivers/mtd/nand/raw/meson_nand.c
+++ b/drivers/mtd/nand/raw/meson_nand.c
@@ -228,14 +228,19 @@ static void meson_nfc_cmd_seed(const struct meson_nfc *nfc, u32 seed)
 	       nfc->reg_base + NFC_REG_CMD);
 }
 
-static void meson_nfc_cmd_access(struct nand_chip *nand, bool raw, bool dir,
-				 int scrambler)
+static void meson_nfc_cmd_access(struct nand_chip *nand, bool raw, bool dir, int page)
 {
 	struct mtd_info *mtd = nand_to_mtd(nand);
 	const struct meson_nfc *nfc = nand_get_controller_data(mtd_to_nand(mtd));
 	const struct meson_nfc_nand_chip *meson_chip = to_meson_nand(nand);
 	u32 bch = meson_chip->bch_mode, cmd;
 	int len = mtd->writesize, pagesize, pages;
+	unsigned int scrambler;
+
+	if (nand->options & NAND_NEED_SCRAMBLING)
+		scrambler = NFC_CMD_SCRAMBLER_ENABLE;
+	else
+		scrambler = NFC_CMD_SCRAMBLER_DISABLE;
 
 	pagesize = nand->ecc.size;
 
@@ -251,6 +256,9 @@ static void meson_nfc_cmd_access(struct nand_chip *nand, bool raw, bool dir,
 	cmd = CMDRWGEN(DMA_DIR(dir), scrambler, bch,
 		       NFC_CMD_SHORTMODE_DISABLE, pagesize, pages);
 
+	if (scrambler == NFC_CMD_SCRAMBLER_ENABLE)
+		meson_nfc_cmd_seed(nfc, page);
+
 	writel(cmd, nfc->reg_base + NFC_REG_CMD);
 }
 
@@ -565,14 +573,7 @@ static int meson_nfc_write_page_sub(struct nand_chip *nand,
 		return ret;
 	}
 
-	if (nand->options & NAND_NEED_SCRAMBLING) {
-		meson_nfc_cmd_seed(nfc, page);
-		meson_nfc_cmd_access(nand, raw, DIRWRITE,
-				     NFC_CMD_SCRAMBLER_ENABLE);
-	} else {
-		meson_nfc_cmd_access(nand, raw, DIRWRITE,
-				     NFC_CMD_SCRAMBLER_DISABLE);
-	}
+	meson_nfc_cmd_access(nand, raw, DIRWRITE, page);
 
 	cmd = nfc->param.chip_select | NFC_CMD_CLE | NAND_CMD_PAGEPROG;
 	writel(cmd, nfc->reg_base + NFC_REG_CMD);
@@ -643,14 +644,7 @@ static int meson_nfc_read_page_sub(struct nand_chip *nand,
 	if (ret)
 		return ret;
 
-	if (nand->options & NAND_NEED_SCRAMBLING) {
-		meson_nfc_cmd_seed(nfc, page);
-		meson_nfc_cmd_access(nand, raw, DIRREAD,
-				     NFC_CMD_SCRAMBLER_ENABLE);
-	} else {
-		meson_nfc_cmd_access(nand, raw, DIRREAD,
-				     NFC_CMD_SCRAMBLER_DISABLE);
-	}
+	meson_nfc_cmd_access(nand, raw, DIRREAD, page);
 
 	meson_nfc_wait_dma_finish(nfc);
 	meson_nfc_check_ecc_pages_valid(nfc, nand, raw);
-- 
2.30.1