mtd: nand: omap_gpmc: rename struct nand_bch_priv to struct omap_nand_info

This patch renames 'struct nand_bch_priv' which currently holds private data only
for BCH ECC schemes, into 'struct omap_nand_info' so that same can be used for
all ECC schemes

Signed-off-by: Pekon Gupta <pekon@ti.com>
Reviewed-by: Stefan Roese <sr@denx.de>

1 files changed, 26 insertions, 32 deletions

diff --git a/drivers/mtd/nand/omap_gpmc.c b/drivers/mtd/nand/omap_gpmc.c
index 1972b0e..391a268 100644
--- a/drivers/mtd/nand/omap_gpmc.c
+++ b/drivers/mtd/nand/omap_gpmc.c
@@ -148,9 +148,9 @@ static int __maybe_unused omap_correct_data(struct mtd_info *mtd, uint8_t *dat,
 }
 
 /*
- * Generic BCH interface
+ * Driver configurations
  */
-struct nand_bch_priv {
+struct omap_nand_info {
 	struct bch_control *control;
 	enum omap_ecc ecc_scheme;
 };
@@ -161,7 +161,7 @@ struct nand_bch_priv {
  * library).
  * When some users with other BCH strength will exists this have to change!
  */
-static __maybe_unused struct nand_bch_priv bch_priv = {
+static __maybe_unused struct omap_nand_info omap_nand_info = {
 	.control = NULL
 };
 
@@ -191,7 +191,7 @@ __maybe_unused
 static void omap_enable_hwecc(struct mtd_info *mtd, int32_t mode)
 {
 	struct nand_chip	*nand	= mtd->priv;
-	struct nand_bch_priv	*bch	= nand->priv;
+	struct omap_nand_info	*info	= nand->priv;
 	unsigned int dev_width = (nand->options & NAND_BUSWIDTH_16) ? 1 : 0;
 	unsigned int ecc_algo = 0;
 	unsigned int bch_type = 0;
@@ -200,7 +200,7 @@ static void omap_enable_hwecc(struct mtd_info *mtd, int32_t mode)
 	u32 ecc_config_val = 0;
 
 	/* configure GPMC for specific ecc-scheme */
-	switch (bch->ecc_scheme) {
+	switch (info->ecc_scheme) {
 	case OMAP_ECC_HAM1_CODE_SW:
 		return;
 	case OMAP_ECC_HAM1_CODE_HW:
@@ -262,11 +262,11 @@ static int omap_calculate_ecc(struct mtd_info *mtd, const uint8_t *dat,
 				uint8_t *ecc_code)
 {
 	struct nand_chip *chip = mtd->priv;
-	struct nand_bch_priv *bch = chip->priv;
+	struct omap_nand_info *info = chip->priv;
 	uint32_t *ptr, val = 0;
 	int8_t i = 0, j;
 
-	switch (bch->ecc_scheme) {
+	switch (info->ecc_scheme) {
 	case OMAP_ECC_HAM1_CODE_HW:
 		val = readl(&gpmc_cfg->ecc1_result);
 		ecc_code[0] = val & 0xFF;
@@ -294,7 +294,7 @@ static int omap_calculate_ecc(struct mtd_info *mtd, const uint8_t *dat,
 		return -EINVAL;
 	}
 	/* ECC scheme specific syndrome customizations */
-	switch (bch->ecc_scheme) {
+	switch (info->ecc_scheme) {
 	case OMAP_ECC_HAM1_CODE_HW:
 		break;
 #ifdef CONFIG_BCH
@@ -330,7 +330,7 @@ static int omap_correct_data_bch(struct mtd_info *mtd, uint8_t *dat,
 				uint8_t *read_ecc, uint8_t *calc_ecc)
 {
 	struct nand_chip *chip = mtd->priv;
-	struct nand_bch_priv *bch = chip->priv;
+	struct omap_nand_info *info = chip->priv;
 	uint32_t eccbytes = chip->ecc.bytes;
 	uint32_t error_count = 0, error_max;
 	uint32_t error_loc[8];
@@ -360,7 +360,7 @@ static int omap_correct_data_bch(struct mtd_info *mtd, uint8_t *dat,
 	 * while reading ECC result we read it in big endian.
 	 * Hence while loading to ELM we have rotate to get the right endian.
 	 */
-	switch (bch->ecc_scheme) {
+	switch (info->ecc_scheme) {
 	case OMAP_ECC_BCH8_CODE_HW:
 		bch_type = BCH_8_BIT;
 		omap_reverse_list(calc_ecc, eccbytes - 1);
@@ -376,7 +376,7 @@ static int omap_correct_data_bch(struct mtd_info *mtd, uint8_t *dat,
 	}
 	/* correct bch error */
 	for (count = 0; count < error_count; count++) {
-		switch (bch->ecc_scheme) {
+		switch (info->ecc_scheme) {
 		case OMAP_ECC_BCH8_CODE_HW:
 			/* 14th byte in ECC is reserved to match ROM layout */
 			error_max = SECTOR_BYTES + (eccbytes - 1);
@@ -483,10 +483,10 @@ static int omap_correct_data_bch_sw(struct mtd_info *mtd, u_char *data,
 	/* cannot correct more than 8 errors */
 	unsigned int errloc[8];
 	struct nand_chip *chip = mtd->priv;
-	struct nand_bch_priv *chip_priv = chip->priv;
-	struct bch_control *bch = chip_priv->control;
+	struct omap_nand_info *info = chip->priv;
 
-	count = decode_bch(bch, NULL, 512, read_ecc, calc_ecc, NULL, errloc);
+	count = decode_bch(info->control, NULL, 512, read_ecc, calc_ecc,
+							NULL, errloc);
 	if (count > 0) {
 		/* correct errors */
 		for (i = 0; i < count; i++) {
@@ -522,15 +522,11 @@ static int omap_correct_data_bch_sw(struct mtd_info *mtd, u_char *data,
 static void __maybe_unused omap_free_bch(struct mtd_info *mtd)
 {
 	struct nand_chip *chip = mtd->priv;
-	struct nand_bch_priv *chip_priv = chip->priv;
-	struct bch_control *bch = NULL;
+	struct omap_nand_info *info = chip->priv;
 
-	if (chip_priv)
-		bch = chip_priv->control;
-
-	if (bch) {
-		free_bch(bch);
-		chip_priv->control = NULL;
+	if (info->control) {
+		free_bch(info->control);
+		info->control = NULL;
 	}
 }
 #endif /* CONFIG_BCH */
@@ -544,7 +540,7 @@ static void __maybe_unused omap_free_bch(struct mtd_info *mtd)
  */
 static int omap_select_ecc_scheme(struct nand_chip *nand,
 	enum omap_ecc ecc_scheme, unsigned int pagesize, unsigned int oobsize) {
-	struct nand_bch_priv	*bch		= nand->priv;
+	struct omap_nand_info	*info		= nand->priv;
 	struct nand_ecclayout	*ecclayout	= &omap_ecclayout;
 	int eccsteps = pagesize / SECTOR_BYTES;
 	int i;
@@ -554,11 +550,10 @@ static int omap_select_ecc_scheme(struct nand_chip *nand,
 		debug("nand: selected OMAP_ECC_HAM1_CODE_SW\n");
 		/* For this ecc-scheme, ecc.bytes, ecc.layout, ... are
 		 * initialized in nand_scan_tail(), so just set ecc.mode */
-		bch_priv.control	= NULL;
+		info->control		= NULL;
 		nand->ecc.mode		= NAND_ECC_SOFT;
 		nand->ecc.layout	= NULL;
 		nand->ecc.size		= 0;
-		bch->ecc_scheme		= OMAP_ECC_HAM1_CODE_SW;
 		break;
 
 	case OMAP_ECC_HAM1_CODE_HW:
@@ -569,7 +564,7 @@ static int omap_select_ecc_scheme(struct nand_chip *nand,
 				(3 * eccsteps) + BADBLOCK_MARKER_LENGTH));
 			return -EINVAL;
 		}
-		bch_priv.control	= NULL;
+		info->control		= NULL;
 		/* populate ecc specific fields */
 		memset(&nand->ecc, 0, sizeof(struct nand_ecc_ctrl));
 		nand->ecc.mode		= NAND_ECC_HW;
@@ -590,7 +585,6 @@ static int omap_select_ecc_scheme(struct nand_chip *nand,
 		ecclayout->oobfree[0].offset = i + BADBLOCK_MARKER_LENGTH;
 		ecclayout->oobfree[0].length = oobsize - ecclayout->eccbytes -
 						BADBLOCK_MARKER_LENGTH;
-		bch->ecc_scheme		= OMAP_ECC_HAM1_CODE_HW;
 		break;
 
 	case OMAP_ECC_BCH8_CODE_HW_DETECTION_SW:
@@ -603,8 +597,8 @@ static int omap_select_ecc_scheme(struct nand_chip *nand,
 			return -EINVAL;
 		}
 		/* check if BCH S/W library can be used for error detection */
-		bch_priv.control = init_bch(13, 8, 0x201b);
-		if (!bch_priv.control) {
+		info->control = init_bch(13, 8, 0x201b);
+		if (!info->control) {
 			printf("nand: error: could not init_bch()\n");
 			return -ENODEV;
 		}
@@ -631,7 +625,6 @@ static int omap_select_ecc_scheme(struct nand_chip *nand,
 		ecclayout->oobfree[0].offset = i + BADBLOCK_MARKER_LENGTH;
 		ecclayout->oobfree[0].length = oobsize - ecclayout->eccbytes -
 						BADBLOCK_MARKER_LENGTH;
-		bch->ecc_scheme		= OMAP_ECC_BCH8_CODE_HW_DETECTION_SW;
 		break;
 #else
 		printf("nand: error: CONFIG_BCH required for ECC\n");
@@ -649,6 +642,7 @@ static int omap_select_ecc_scheme(struct nand_chip *nand,
 		}
 		/* intialize ELM for ECC error detection */
 		elm_init();
+		info->control		= NULL;
 		/* populate ecc specific fields */
 		memset(&nand->ecc, 0, sizeof(struct nand_ecc_ctrl));
 		nand->ecc.mode		= NAND_ECC_HW;
@@ -666,7 +660,6 @@ static int omap_select_ecc_scheme(struct nand_chip *nand,
 		ecclayout->oobfree[0].offset = i + BADBLOCK_MARKER_LENGTH;
 		ecclayout->oobfree[0].length = oobsize - ecclayout->eccbytes -
 						BADBLOCK_MARKER_LENGTH;
-		bch->ecc_scheme		= OMAP_ECC_BCH8_CODE_HW;
 		break;
 #else
 		printf("nand: error: CONFIG_NAND_OMAP_ELM required for ECC\n");
@@ -682,6 +675,7 @@ static int omap_select_ecc_scheme(struct nand_chip *nand,
 	if (ecc_scheme != OMAP_ECC_HAM1_CODE_SW)
 		nand->ecc.layout = ecclayout;
 
+	info->ecc_scheme = ecc_scheme;
 	return 0;
 }
 
@@ -785,7 +779,7 @@ int board_nand_init(struct nand_chip *nand)
 
 	nand->IO_ADDR_R = (void __iomem *)&gpmc_cfg->cs[cs].nand_dat;
 	nand->IO_ADDR_W = (void __iomem *)&gpmc_cfg->cs[cs].nand_cmd;
-	nand->priv	= &bch_priv;
+	nand->priv	= &omap_nand_info;
 	nand->cmd_ctrl	= omap_nand_hwcontrol;
 	nand->options	|= NAND_NO_PADDING | NAND_CACHEPRG;
 	/* If we are 16 bit dev, our gpmc config tells us that */