mtd: rawnand: sunxi: introduce reg_pat_id in sunxi_nfc_caps

The H6/H616 pattern ID register is not at the same offset as the
A10/A23 one, so move its offset into sunxi_nfc_caps.

No functional change.

Signed-off-by: Richard Genoud <richard.genoud@bootlin.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>

Author: richard-bootlin

drivers/mtd/nand/raw/sunxi_nand.c

@@ -55,7 +55,8 @@
 #define NFC_REG_A10_USER_DATA	0x0050
 #define NFC_REG_USER_DATA(nfc, x)	(nfc->caps->reg_user_data + ((x) * 4))
 #define NFC_REG_SPARE_AREA	0x00A0
-#define NFC_REG_PAT_ID		0x00A4
+#define NFC_REG_PAT_ID(nfc) (nfc->caps->reg_pat_id)
+#define NFC_REG_A10_PAT_ID	0x00A4
 #define NFC_REG_MDMA_ADDR	0x00C0
 #define NFC_REG_MDMA_CNT	0x00C4
 #define NFC_RAM0_BASE		0x0400
@@ -238,6 +239,7 @@ static inline struct sunxi_nand_chip *to_sunxi_nand(struct nand_chip *nand)
  * @reg_io_data:	I/O data register
  * @reg_ecc_err_cnt:	ECC error counter register
  * @reg_user_data:	User data register
+ * @reg_pat_id:		Pattern ID Register
  * @reg_pat_found:	Data Pattern Status Register
  * @random_en_mask:	RANDOM_EN mask in NFC_ECC_CTL register
  * @random_dir_mask:	RANDOM_DIRECTION mask in NFC_ECC_CTL register
@@ -253,6 +255,7 @@ struct sunxi_nfc_caps {
 	unsigned int reg_io_data;
 	unsigned int reg_ecc_err_cnt;
 	unsigned int reg_user_data;
+	unsigned int reg_pat_id;
 	unsigned int reg_pat_found;
 	unsigned int random_en_mask;
 	unsigned int random_dir_mask;
@@ -813,7 +816,7 @@ static int sunxi_nfc_hw_ecc_correct(struct nand_chip *nand, u8 *data, u8 *oob,
 	if (pattern_found & BIT(step)) {
 		u8 pattern;
 
-		if (unlikely(!(readl(nfc->regs + NFC_REG_PAT_ID) & 0x1))) {
+		if (unlikely(!(readl(nfc->regs + NFC_REG_PAT_ID(nfc)) & 0x1))) {
 			pattern = 0x0;
 		} else {
 			pattern = 0xff;
@@ -2233,6 +2236,7 @@ static const struct sunxi_nfc_caps sunxi_nfc_a10_caps = {
 	.reg_io_data = NFC_REG_A10_IO_DATA,
 	.reg_ecc_err_cnt = NFC_REG_A10_ECC_ERR_CNT,
 	.reg_user_data = NFC_REG_A10_USER_DATA,
+	.reg_pat_id = NFC_REG_A10_PAT_ID,
 	.reg_pat_found = NFC_REG_ECC_ST,
 	.random_en_mask = BIT(9),
 	.random_dir_mask = BIT(10),
@@ -2249,6 +2253,7 @@ static const struct sunxi_nfc_caps sunxi_nfc_a23_caps = {
 	.reg_io_data = NFC_REG_A23_IO_DATA,
 	.reg_ecc_err_cnt = NFC_REG_A10_ECC_ERR_CNT,
 	.reg_user_data = NFC_REG_A10_USER_DATA,
+	.reg_pat_id = NFC_REG_A10_PAT_ID,
 	.reg_pat_found = NFC_REG_ECC_ST,
 	.random_en_mask = BIT(9),
 	.random_dir_mask = BIT(10),