mtd/devices/docg3.c

17 #include <linux/mtd/mtd.h>
18 #include <linux/mtd/partitions.h>
56 static int docg3_ooblayout_ecc(struct mtd_info *mtd, int section,
69 static int docg3_ooblayout_free(struct mtd_info *mtd, int section,
856  * @mtd: the device
859  * @ops: the mtd oob structure
865 static int doc_read_oob(struct mtd_info *mtd, loff_t from,
868 	struct docg3 *docg3 = mtd->priv;
899 	old_stats = mtd->ecc_stats;
949 				mtd->ecc_stats.failed++;
953 				mtd->ecc_stats.corrected += ret;
973 			mtd->ecc_stats.failed - old_stats.failed;
975 			mtd->ecc_stats.corrected - old_stats.corrected;
1008  * @mtd: the device
1013 static int doc_block_isbad(struct mtd_info *mtd, loff_t from)
1015 	struct docg3 *docg3 = mtd->priv;
1175  * @mtd: the device
1178  * Erase a bunch of contiguous blocks, by pairs, as a "mtd" page of 1024 is
1184 static int doc_erase(struct mtd_info *mtd, struct erase_info *info)
1186 	struct docg3 *docg3 = mtd->priv;
1194 	if (info->addr + info->len > mtd->size || page || ofs)
1202 	for (len = info->len; !ret && len > 0; len -= mtd->erasesize) {
1369  * @mtd: the device
1372  * @ops: the mtd oob structure
1382 static int doc_write_oob(struct mtd_info *mtd, loff_t ofs,
1385 	struct docg3 *docg3 = mtd->priv;
1409 		oobdelta = mtd->oobsize;
1412 		oobdelta = mtd->oobavail;
1751  * @mtd: The structure to fill
1753 static int __init doc_set_driver_info(int chip_id, struct mtd_info *mtd)
1755 	struct docg3 *docg3 = mtd->priv;
1764 		mtd->name = devm_kasprintf(docg3->dev, GFP_KERNEL, "docg3.%d",
1766 		if (!mtd->name)
1771 	mtd->type = MTD_NANDFLASH;
1772 	mtd->flags = MTD_CAP_NANDFLASH;
1773 	mtd->size = (docg3->max_block + 1) * DOC_LAYOUT_BLOCK_SIZE;
1775 		mtd->size /= 2;
1776 	mtd->erasesize = DOC_LAYOUT_BLOCK_SIZE * DOC_LAYOUT_NBPLANES;
1778 		mtd->erasesize /= 2;
1779 	mtd->writebufsize = mtd->writesize = DOC_LAYOUT_PAGE_SIZE;
1780 	mtd->oobsize = DOC_LAYOUT_OOB_SIZE;
1781 	mtd->_erase = doc_erase;
1782 	mtd->_read_oob = doc_read_oob;
1783 	mtd->_write_oob = doc_write_oob;
1784 	mtd->_block_isbad = doc_block_isbad;
1785 	mtd_set_ooblayout(mtd, &nand_ooblayout_docg3_ops);
1786 	mtd->oobavail = 8;
1787 	mtd->ecc_strength = DOC_ECC_BCH_T;
1810 	struct mtd_info *mtd;
1816 	mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL);
1817 	if (!mtd)
1819 	mtd->priv = docg3;
1820 	mtd->dev.parent = dev;
1853 	ret = doc_set_driver_info(chip_id, mtd);
1859 	return mtd;
1864 	kfree(mtd);
1873  * @mtd: the device
1875 static void doc_release_device(struct mtd_info *mtd)
1877 	struct docg3 *docg3 = mtd->priv;
1879 	mtd_device_unregister(mtd);
1882 	kfree(mtd);
1895 	struct mtd_info **docg3_floors, *mtd;
1900 	mtd = docg3_floors[0];
1901 	docg3 = mtd->priv;
1922 	struct mtd_info **docg3_floors, *mtd;
1929 		mtd = docg3_floors[floor];
1930 		if (!mtd)
1932 		docg3 = mtd->priv;
1955 	mtd = docg3_floors[0];
1956 	docg3 = mtd->priv;
1973 	struct mtd_info *mtd;
2005 		mtd = doc_probe_device(cascade, floor, dev);
2006 		if (IS_ERR(mtd)) {
2007 			ret = PTR_ERR(mtd);
2010 		if (!mtd) {
2016 		cascade->floors[floor] = mtd;
2017 		ret = mtd_device_parse_register(mtd, part_probes, NULL, NULL,