diff options
Diffstat (limited to 'target/linux/sunxi/patches-4.1/122-mtd-nand-sunxi-add-partition-support.patch')
| -rw-r--r-- | target/linux/sunxi/patches-4.1/122-mtd-nand-sunxi-add-partition-support.patch | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/target/linux/sunxi/patches-4.1/122-mtd-nand-sunxi-add-partition-support.patch b/target/linux/sunxi/patches-4.1/122-mtd-nand-sunxi-add-partition-support.patch new file mode 100644 index 0000000000..d993c9db6c --- /dev/null +++ b/target/linux/sunxi/patches-4.1/122-mtd-nand-sunxi-add-partition-support.patch @@ -0,0 +1,164 @@ +From 5cb31780791d0f6b68e3712f1b35f1a28c47add0 Mon Sep 17 00:00:00 2001 +From: Boris Brezillon <boris.brezillon@free-electrons.com> +Date: Tue, 21 Oct 2014 14:37:15 +0200 +Subject: [PATCH] mtd: nand: sunxi: Add NAND partition support + +Add NAND partition support to the sunxi_nand driver. + +Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> +Signed-off-by: Hans de Goede <hdegoede@redhat.com> +--- + drivers/mtd/nand/Kconfig | 1 + + drivers/mtd/nand/sunxi_nand.c | 73 +++++++++++++++++++++++++++++++++++++------ + 2 files changed, 65 insertions(+), 9 deletions(-) + +diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig +index 8242470..7df88c6 100644 +--- a/drivers/mtd/nand/Kconfig ++++ b/drivers/mtd/nand/Kconfig +@@ -525,6 +525,7 @@ config MTD_NAND_XWAY + config MTD_NAND_SUNXI + tristate "Support for NAND on Allwinner SoCs" + depends on ARCH_SUNXI ++ select MTD_OF_NAND_PARTS + help + Enables support for NAND Flash chips on Allwinner SoCs. + +diff --git a/drivers/mtd/nand/sunxi_nand.c b/drivers/mtd/nand/sunxi_nand.c +index 6f93b29..c3e0473 100644 +--- a/drivers/mtd/nand/sunxi_nand.c ++++ b/drivers/mtd/nand/sunxi_nand.c +@@ -202,6 +202,23 @@ struct sunxi_nand_hw_ecc { + }; + + /* ++ * sunxi NAND partition structure: stores NAND partitions information ++ * ++ * @part: base paritition structure ++ * @ecc: per-partition ECC info ++ */ ++struct sunxi_nand_part { ++ struct nand_part part; ++ struct nand_ecc_ctrl ecc; ++}; ++ ++static inline struct sunxi_nand_part * ++to_sunxi_nand_part(struct nand_part *part) ++{ ++ return container_of(part, struct sunxi_nand_part, part); ++} ++ ++/* + * NAND chip structure: stores NAND chip device related information + * + * @node: used to store NAND chips into a list +@@ -521,7 +538,7 @@ static int sunxi_nfc_hw_ecc_read_page(struct mtd_info *mtd, + int oob_required, int page) + { + struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller); +- struct nand_ecc_ctrl *ecc = &chip->ecc; ++ struct nand_ecc_ctrl *ecc = chip->cur_ecc; + struct nand_ecclayout *layout = ecc->layout; + struct sunxi_nand_hw_ecc *data = ecc->priv; + unsigned int max_bitflips = 0; +@@ -607,7 +624,7 @@ static int sunxi_nfc_hw_ecc_write_page(struct mtd_info *mtd, + const uint8_t *buf, int oob_required) + { + struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller); +- struct nand_ecc_ctrl *ecc = &chip->ecc; ++ struct nand_ecc_ctrl *ecc = chip->cur_ecc; + struct nand_ecclayout *layout = ecc->layout; + struct sunxi_nand_hw_ecc *data = ecc->priv; + int offset; +@@ -681,7 +698,7 @@ static int sunxi_nfc_hw_syndrome_ecc_read_page(struct mtd_info *mtd, + int page) + { + struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller); +- struct nand_ecc_ctrl *ecc = &chip->ecc; ++ struct nand_ecc_ctrl *ecc = chip->cur_ecc; + struct sunxi_nand_hw_ecc *data = ecc->priv; + unsigned int max_bitflips = 0; + uint8_t *oob = chip->oob_poi; +@@ -749,7 +766,7 @@ static int sunxi_nfc_hw_syndrome_ecc_write_page(struct mtd_info *mtd, + int oob_required) + { + struct sunxi_nfc *nfc = to_sunxi_nfc(chip->controller); +- struct nand_ecc_ctrl *ecc = &chip->ecc; ++ struct nand_ecc_ctrl *ecc = chip->cur_ecc; + struct sunxi_nand_hw_ecc *data = ecc->priv; + uint8_t *oob = chip->oob_poi; + int offset = 0; +@@ -1099,8 +1116,13 @@ static int sunxi_nand_ecc_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc, + ecc->strength = nand->ecc_strength_ds; + } + +- if (!ecc->size || !ecc->strength) +- return -EINVAL; ++ if (!ecc->size || !ecc->strength) { ++ if (ecc == &nand->ecc) ++ return -EINVAL; ++ ++ ecc->size = nand->ecc.size; ++ ecc->strength = nand->ecc.strength; ++ } + + ecc->mode = NAND_ECC_HW; + +@@ -1135,12 +1157,39 @@ static int sunxi_nand_ecc_init(struct mtd_info *mtd, struct nand_ecc_ctrl *ecc, + return 0; + } + ++static void sunxi_nand_part_release(struct nand_part *part) ++{ ++ kfree(to_sunxi_nand_part(part)); ++} ++ ++struct nand_part *sunxi_ofnandpart_parse(void *priv, struct mtd_info *master, ++ struct device_node *pp) ++{ ++ struct sunxi_nand_part *part; ++ int ret; ++ ++ part = kzalloc(sizeof(*part), GFP_KERNEL); ++ part->part.release = sunxi_nand_part_release; ++ ++ ret = sunxi_nand_ecc_init(master, &part->ecc, pp); ++ if (ret) ++ goto err; ++ ++ part->part.ecc = &part->ecc; ++ ++ return &part->part; ++ ++err: ++ kfree(part); ++ return ERR_PTR(ret); ++} ++ + static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc, + struct device_node *np) + { + const struct nand_sdr_timings *timings; + struct sunxi_nand_chip *chip; +- struct mtd_part_parser_data ppdata; ++ struct ofnandpart_data ppdata; + struct mtd_info *mtd; + struct nand_chip *nand; + int nsels; +@@ -1269,8 +1318,14 @@ static int sunxi_nand_chip_init(struct device *dev, struct sunxi_nfc *nfc, + return ret; + } + +- ppdata.of_node = np; +- ret = mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0); ++ ppdata.node = np; ++ ppdata.parse = sunxi_ofnandpart_parse; ++ ret = ofnandpart_parse(mtd, &ppdata); ++ if (!ret) ++ ret = mtd_device_register(mtd, NULL, 0); ++ else if (ret > 0) ++ ret = 0; ++ + if (ret) { + dev_err(dev, "failed to register mtd device: %d\n", ret); + nand_release(mtd); |