ramips: clean up the mt7621 nand flash driver hacks, add support for the xiaomi mir3g flash chip

Signed-off-by: Felix Fietkau <nbd@nbd.name>

target/linux/ramips/patches-4.14/0039-mtd-add-mt7621-nand-support.patch

@@ -1299,7 +1299,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +
 --- /dev/null
 +++ b/drivers/mtd/nand/mtk_nand2.c
-@@ -0,0 +1,2363 @@
+@@ -0,0 +1,2365 @@
 +/******************************************************************************
 +* mtk_nand2.c - MTK NAND Flash Device Driver
 + *
@@ -2748,7 +2748,8 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +{
 +	struct nand_chip *chip = (struct nand_chip *)mtd->priv;
 +
-+	chip->erase(mtd, page);
++	chip->cmdfunc(mtd, NAND_CMD_ERASE1, -1, page);
++	chip->cmdfunc(mtd, NAND_CMD_ERASE2, -1, -1);
 +
 +	return chip->waitfunc(mtd, chip);
 +}
@@ -3431,7 +3432,6 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +	nand_chip->write_page = mtk_nand_write_page;
 +	nand_chip->ecc.write_oob = mtk_nand_write_oob;
 +	nand_chip->block_markbad = mtk_nand_block_markbad;   // need to add nand_get_device()/nand_release_device().
-+	nand_chip->erase_mtk = mtk_nand_erase;
 +	nand_chip->read_page = mtk_nand_read_page;
 +	nand_chip->ecc.read_oob = mtk_nand_read_oob;
 +	nand_chip->block_bad = mtk_nand_block_bad;
@@ -3562,6 +3562,8 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +		goto out;
 +	}
 +
++	nand_chip->erase = mtk_nand_erase;
++
 +	g_page_size = mtd->writesize;
 +	platform_set_drvdata(pdev, host);
 +	if (hw->nfi_bus_width == 16) {
@@ -4303,7 +4305,7 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +#endif /* __NAND_DEF_H__ */
 --- /dev/null
 +++ b/drivers/mtd/nand/nand_device_list.h
-@@ -0,0 +1,56 @@
+@@ -0,0 +1,59 @@
 +/* Copyright Statement:
 + *
 + * This software/firmware and related documentation ("MediaTek Software") are
@@ -4350,6 +4352,9 @@ Signed-off-by: John Crispin <blogic@openwrt.org>
 +	{0xADBC, 0x905554, 5, 16, 512, 128, 2048, 64, 0x10801011, "H9DA4GH4JJAMC", 0},
 +    {0x01F1, 0x801D01, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "S34ML01G100TF", 0},
 +    {0x92F1, 0x8095FF, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "F59L1G81A", 0},
++	{0xC8D1, 0x809540, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "F59L1G81MA", 0},
++	{0xC8DA, 0x909544, 5, 8, 256, 128, 2048, 64, 0x30C77fff, "F59L2G81A", 0},
++	{0xC8DC, 0x909554, 5, 8, 512, 128, 2048, 64, 0x30C77fff, "F59L4G81A", 0},
 +	{0xECD3, 0x519558, 5, 8, 1024, 128, 2048, 64, 0x44333, "K9K8G8000", 0},
 +    {0xC2F1, 0x801DC2, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "MX30LF1G08AA", 0},
 +    {0x98D3, 0x902676, 5, 8, 1024, 256, 4096, 224, 0x00C25332, "TC58NVG3S0F", 0},

target/linux/ramips/patches-4.14/0040-nand-hack-restore-write_page.patch

@@ -1,42 +0,0 @@
---- a/include/linux/mtd/rawnand.h
-+++ b/include/linux/mtd/rawnand.h
-@@ -885,6 +885,9 @@ struct nand_chip {
- 	int(*waitfunc)(struct mtd_info *mtd, struct nand_chip *this);
- 	int (*erase)(struct mtd_info *mtd, int page);
- 	int (*scan_bbt)(struct mtd_info *mtd);
-+	int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
-+			uint32_t offset, int data_len, const uint8_t *buf,
-+			int oob_required, int page, int raw);
- 	int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip,
- 			int feature_addr, uint8_t *subfeature_para);
- 	int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,
---- a/drivers/mtd/nand/nand_base.c
-+++ b/drivers/mtd/nand/nand_base.c
-@@ -2761,9 +2761,14 @@ static int nand_do_write_ops(struct mtd_
- 			memset(chip->oob_poi, 0xff, mtd->oobsize);
- 		}
- 
--		ret = nand_write_page(mtd, chip, column, bytes, wbuf,
--				      oob_required, page,
--				      (ops->mode == MTD_OPS_RAW));
-+//		if (chip->write_page)
-+			ret = chip->write_page(mtd, chip, column, bytes, wbuf,
-+					       oob_required, page,
-+					       (ops->mode == MTD_OPS_RAW));
-+//		else
-+//			ret = nand_write_page(mtd, chip, column, bytes, wbuf,
-+//					      oob_required, page,
-+//					      (ops->mode == MTD_OPS_RAW));
- 		if (ret)
- 			break;
- 
-@@ -4719,6 +4724,9 @@ int nand_scan_tail(struct mtd_info *mtd)
- 		}
- 	}
- 
-+//	if (!chip->write_page)
-+//		chip->write_page = nand_write_page;
-+
- 	/*
- 	 * Check ECC mode, default to software if 3byte/512byte hardware ECC is
- 	 * selected and we have 256 byte pagesize fallback to software ECC

target/linux/ramips/patches-4.14/0040-nand-hack.patch

@@ -18,47 +18,42 @@
  			if (ret < 0) {
  				if (use_bufpoi)
  					/* Invalidate page cache */
-@@ -3084,8 +3088,11 @@ int nand_erase_nand(struct mtd_info *mtd
+@@ -2761,9 +2765,14 @@ static int nand_do_write_ops(struct mtd_
- 		    (page + pages_per_block))
+ 			memset(chip->oob_poi, 0xff, mtd->oobsize);
- 			chip->pagebuf = -1;
+ 		}
+ 
+-		ret = nand_write_page(mtd, chip, column, bytes, wbuf,
+-				      oob_required, page,
+-				      (ops->mode == MTD_OPS_RAW));
++		if (chip->write_page)
++			ret = chip->write_page(mtd, chip, column, bytes, wbuf,
++					       oob_required, page,
++					       (ops->mode == MTD_OPS_RAW));
++		else
++			ret = nand_write_page(mtd, chip, column, bytes, wbuf,
++					      oob_required, page,
++					      (ops->mode == MTD_OPS_RAW));
+ 		if (ret)
+ 			break;
  
-+#ifdef CONFIG_MTK_MTD_NAND
-+		status = chip->erase_mtk(mtd, page & chip->pagemask);
-+#else
- 		status = chip->erase(mtd, page & chip->pagemask);
--
-+#endif
- 		/* See if block erase succeeded */
- 		if (status & NAND_STATUS_FAIL) {
- 			pr_debug("%s: failed erase, page 0x%08x\n",
-@@ -4215,6 +4222,7 @@ int nand_scan_ident(struct mtd_info *mtd
- 		 * cmdfunc() both expect cmd_ctrl() to be populated,
- 		 * so we need to check that that's the case
- 		 */
-+		printk("%s:%s[%d]%p %p %p\n", __FILE__, __func__, __LINE__, chip->cmdfunc, chip->select_chip, chip->cmd_ctrl);
- 		pr_err("chip.cmd_ctrl() callback is not provided");
- 		return -EINVAL;
- 	}
---- a/drivers/mtd/nand/nand_device_list.h
-+++ b/drivers/mtd/nand/nand_device_list.h
-@@ -44,6 +44,8 @@ static const flashdev_info gen_FlashTabl
- 	{0xADBC, 0x905554, 5, 16, 512, 128, 2048, 64, 0x10801011, "H9DA4GH4JJAMC", 0},
-     {0x01F1, 0x801D01, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "S34ML01G100TF", 0},
-     {0x92F1, 0x8095FF, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "F59L1G81A", 0},
-+	{0xC8DA, 0x909544, 5, 8, 256, 128, 2048, 64, 0x30C77fff, "F59L2G81A", 0},
-+	{0xC8DC, 0x909554, 5, 8, 512, 128, 2048, 64, 0x30C77fff, "F59L4G81A", 0},
- 	{0xECD3, 0x519558, 5, 8, 1024, 128, 2048, 64, 0x44333, "K9K8G8000", 0},
-     {0xC2F1, 0x801DC2, 4, 8, 128, 128, 2048, 64, 0x30C77fff, "MX30LF1G08AA", 0},
-     {0x98D3, 0x902676, 5, 8, 1024, 256, 4096, 224, 0x00C25332, "TC58NVG3S0F", 0},
 --- a/include/linux/mtd/rawnand.h
 +++ b/include/linux/mtd/rawnand.h
-@@ -896,6 +896,10 @@ struct nand_chip {
+@@ -885,6 +885,9 @@ struct nand_chip {
+ 	int(*waitfunc)(struct mtd_info *mtd, struct nand_chip *this);
+ 	int (*erase)(struct mtd_info *mtd, int page);
+ 	int (*scan_bbt)(struct mtd_info *mtd);
++	int (*write_page)(struct mtd_info *mtd, struct nand_chip *chip,
++			uint32_t offset, int data_len, const uint8_t *buf,
++			int oob_required, int page, int raw);
+ 	int (*onfi_set_features)(struct mtd_info *mtd, struct nand_chip *chip,
+ 			int feature_addr, uint8_t *subfeature_para);
+ 	int (*onfi_get_features)(struct mtd_info *mtd, struct nand_chip *chip,
+@@ -893,6 +896,9 @@ struct nand_chip {
  	int (*setup_data_interface)(struct mtd_info *mtd, int chipnr,
  				    const struct nand_data_interface *conf);
  
 +#ifdef CONFIG_MTK_MTD_NAND
 +	int (*read_page)(struct mtd_info *mtd, struct nand_chip *chip, u8 *buf, int page);
-+	int (*erase_mtk)(struct mtd_info *mtd, int page);
 +#endif /* CONFIG_MTK_MTD_NAND */
  
  	int chip_delay;