1 // SPDX-License-Identifier: GPL-2.0
4  *		  2002-2006 Thomas Gleixner (tglx@linutronix.de)
26 	struct nand_device *base = &chip->base;  in nand_jedec_detect()
33 	char id[5];  in nand_jedec_detect()  local
37 	memorg = nanddev_get_memorg(&chip->base);  in nand_jedec_detect()
40 	ret = nand_readid_op(chip, 0x40, id, sizeof(id));  in nand_jedec_detect()
41 	if (ret || strncmp(id, "JEDEC", sizeof(id)))  in nand_jedec_detect()
47 		return -ENOMEM;  in nand_jedec_detect()
49 	if (!nand_has_exec_op(chip) || chip->controller->supported_op.data_only_read)  in nand_jedec_detect()
68 		if (crc == le16_to_cpu(p->crc))  in nand_jedec_detect()
78 	val = le16_to_cpu(p->revision);  in nand_jedec_detect()
89 	sanitize_string(p->manufacturer, sizeof(p->manufacturer));  in nand_jedec_detect()
90 	sanitize_string(p->model, sizeof(p->model));  in nand_jedec_detect()
91 	chip->parameters.model = kstrdup(p->model, GFP_KERNEL);  in nand_jedec_detect()
92 	if (!chip->parameters.model) {  in nand_jedec_detect()
93 		ret = -ENOMEM;  in nand_jedec_detect()
97 	if (p->opt_cmd[0] & JEDEC_OPT_CMD_READ_CACHE)  in nand_jedec_detect()
98 		chip->parameters.supports_read_cache = true;  in nand_jedec_detect()
100 	memorg->pagesize = le32_to_cpu(p->byte_per_page);  in nand_jedec_detect()
101 	mtd->writesize = memorg->pagesize;  in nand_jedec_detect()
104 	memorg->pages_per_eraseblock =  in nand_jedec_detect()
105 			1 << (fls(le32_to_cpu(p->pages_per_block)) - 1);  in nand_jedec_detect()
106 	mtd->erasesize = memorg->pages_per_eraseblock * memorg->pagesize;  in nand_jedec_detect()
108 	memorg->oobsize = le16_to_cpu(p->spare_bytes_per_page);  in nand_jedec_detect()
109 	mtd->oobsize = memorg->oobsize;  in nand_jedec_detect()
111 	memorg->luns_per_target = p->lun_count;  in nand_jedec_detect()
112 	memorg->planes_per_lun = 1 << p->multi_plane_addr;  in nand_jedec_detect()
115 	memorg->eraseblocks_per_lun =  in nand_jedec_detect()
116 		1 << (fls(le32_to_cpu(p->blocks_per_lun)) - 1);  in nand_jedec_detect()
117 	memorg->bits_per_cell = p->bits_per_cell;  in nand_jedec_detect()
119 	if (le16_to_cpu(p->features) & JEDEC_FEATURE_16_BIT_BUS)  in nand_jedec_detect()
120 		chip->options |= NAND_BUSWIDTH_16;  in nand_jedec_detect()
123 	ecc = &p->ecc_info[0];  in nand_jedec_detect()
125 	if (ecc->codeword_size >= 9) {  in nand_jedec_detect()
127 			.strength = ecc->ecc_bits,  in nand_jedec_detect()
128 			.step_size = 1 << ecc->codeword_size,  in nand_jedec_detect()