linux-kernel - [PATCH v2 03/15] mtd: rawnand: sunxi: introduce reg_ecc_err_cnt in sunxi_nfc

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Message-ID: <20251013152645.1119308-4-richard.genoud@bootlin.com>
Date: Mon, 13 Oct 2025 17:26:33 +0200
From: Richard Genoud <richard.genoud@...tlin.com>
To: Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>
Cc: Uwe Kleine-König <u.kleine-koenig@...libre.com>,
	Wentao Liang <vulab@...as.ac.cn>,
	Johan Hovold <johan@...nel.org>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	linux-mtd@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Richard Genoud <richard.genoud@...tlin.com>
Subject: [PATCH v2 03/15] mtd: rawnand: sunxi: introduce reg_ecc_err_cnt in sunxi_nfc_caps

The H6/H616 ECC_ERR_CNT 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@...tlin.com>
---
 drivers/mtd/nand/raw/sunxi_nand.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/raw/sunxi_nand.c b/drivers/mtd/nand/raw/sunxi_nand.c
index d3b17d54f04c..0285e4d0ca7f 100644
--- a/drivers/mtd/nand/raw/sunxi_nand.c
+++ b/drivers/mtd/nand/raw/sunxi_nand.c
@@ -46,7 +46,8 @@
 #define NFC_REG_ECC_CTL		0x0034
 #define NFC_REG_ECC_ST		0x0038
 #define NFC_REG_DEBUG		0x003C
-#define NFC_REG_ECC_ERR_CNT(x)	((0x0040 + (x)) & ~0x3)
+#define NFC_REG_A10_ECC_ERR_CNT	0x0040
+#define NFC_REG_ECC_ERR_CNT(nfc, x)	((nfc->caps->reg_ecc_err_cnt + (x)) & ~0x3)
 #define NFC_REG_USER_DATA(x)	(0x0050 + ((x) * 4))
 #define NFC_REG_SPARE_AREA	0x00A0
 #define NFC_REG_PAT_ID		0x00A4
@@ -212,6 +213,7 @@ static inline struct sunxi_nand_chip *to_sunxi_nand(struct nand_chip *nand)
  * @has_mdma:		Use mbus dma mode, otherwise general dma
  *			through MBUS on A23/A33 needs extra configuration.
  * @reg_io_data:	I/O data register
+ * @reg_ecc_err_cnt:	ECC error counter register
  * @dma_maxburst:	DMA maxburst
  * @ecc_strengths:	Available ECC strengths array
  * @nstrengths:		Size of @ecc_strengths
@@ -219,6 +221,7 @@ static inline struct sunxi_nand_chip *to_sunxi_nand(struct nand_chip *nand)
 struct sunxi_nfc_caps {
 	bool has_mdma;
 	unsigned int reg_io_data;
+	unsigned int reg_ecc_err_cnt;
 	unsigned int dma_maxburst;
 	const u8 *ecc_strengths;
 	unsigned int nstrengths;
@@ -790,7 +793,7 @@ static int sunxi_nfc_hw_ecc_correct(struct nand_chip *nand, u8 *data, u8 *oob,
 		return 0;
 	}
 
-	tmp = readl(nfc->regs + NFC_REG_ECC_ERR_CNT(step));
+	tmp = readl(nfc->regs + NFC_REG_ECC_ERR_CNT(nfc, step));
 
 	return NFC_ECC_ERR_CNT(step, tmp);
 }
@@ -2177,6 +2180,7 @@ static const u8 sunxi_ecc_strengths_a10[] = {
 
 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,
 	.dma_maxburst = 4,
 	.ecc_strengths = sunxi_ecc_strengths_a10,
 	.nstrengths = ARRAY_SIZE(sunxi_ecc_strengths_a10),
@@ -2185,6 +2189,7 @@ static const struct sunxi_nfc_caps sunxi_nfc_a10_caps = {
 static const struct sunxi_nfc_caps sunxi_nfc_a23_caps = {
 	.has_mdma = true,
 	.reg_io_data = NFC_REG_A23_IO_DATA,
+	.reg_ecc_err_cnt = NFC_REG_A10_ECC_ERR_CNT,
 	.dma_maxburst = 8,
 	.ecc_strengths = sunxi_ecc_strengths_a10,
 	.nstrengths = ARRAY_SIZE(sunxi_ecc_strengths_a10),