diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/mtd/ofpart.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/mtd/ofpart.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/ANDROID_3.4.5/drivers/mtd/ofpart.c b/ANDROID_3.4.5/drivers/mtd/ofpart.c deleted file mode 100644 index 64be8f08..00000000 --- a/ANDROID_3.4.5/drivers/mtd/ofpart.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * Flash partitions described by the OF (or flattened) device tree - * - * Copyright © 2006 MontaVista Software Inc. - * Author: Vitaly Wool <vwool@ru.mvista.com> - * - * Revised to handle newer style flash binding by: - * Copyright © 2007 David Gibson, IBM Corporation. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/of.h> -#include <linux/mtd/mtd.h> -#include <linux/slab.h> -#include <linux/mtd/partitions.h> - -static int parse_ofpart_partitions(struct mtd_info *master, - struct mtd_partition **pparts, - struct mtd_part_parser_data *data) -{ - struct device_node *node; - const char *partname; - struct device_node *pp; - int nr_parts, i; - - - if (!data) - return 0; - - node = data->of_node; - if (!node) - return 0; - - /* First count the subnodes */ - pp = NULL; - nr_parts = 0; - while ((pp = of_get_next_child(node, pp))) - nr_parts++; - - if (nr_parts == 0) - return 0; - - *pparts = kzalloc(nr_parts * sizeof(**pparts), GFP_KERNEL); - if (!*pparts) - return -ENOMEM; - - pp = NULL; - i = 0; - while ((pp = of_get_next_child(node, pp))) { - const __be32 *reg; - int len; - - reg = of_get_property(pp, "reg", &len); - if (!reg) { - nr_parts--; - continue; - } - - (*pparts)[i].offset = be32_to_cpu(reg[0]); - (*pparts)[i].size = be32_to_cpu(reg[1]); - - partname = of_get_property(pp, "label", &len); - if (!partname) - partname = of_get_property(pp, "name", &len); - (*pparts)[i].name = (char *)partname; - - if (of_get_property(pp, "read-only", &len)) - (*pparts)[i].mask_flags = MTD_WRITEABLE; - - i++; - } - - if (!i) { - of_node_put(pp); - pr_err("No valid partition found on %s\n", node->full_name); - kfree(*pparts); - *pparts = NULL; - return -EINVAL; - } - - return nr_parts; -} - -static struct mtd_part_parser ofpart_parser = { - .owner = THIS_MODULE, - .parse_fn = parse_ofpart_partitions, - .name = "ofpart", -}; - -static int parse_ofoldpart_partitions(struct mtd_info *master, - struct mtd_partition **pparts, - struct mtd_part_parser_data *data) -{ - struct device_node *dp; - int i, plen, nr_parts; - const struct { - __be32 offset, len; - } *part; - const char *names; - - if (!data) - return 0; - - dp = data->of_node; - if (!dp) - return 0; - - part = of_get_property(dp, "partitions", &plen); - if (!part) - return 0; /* No partitions found */ - - pr_warning("Device tree uses obsolete partition map binding: %s\n", - dp->full_name); - - nr_parts = plen / sizeof(part[0]); - - *pparts = kzalloc(nr_parts * sizeof(*(*pparts)), GFP_KERNEL); - if (!pparts) - return -ENOMEM; - - names = of_get_property(dp, "partition-names", &plen); - - for (i = 0; i < nr_parts; i++) { - (*pparts)[i].offset = be32_to_cpu(part->offset); - (*pparts)[i].size = be32_to_cpu(part->len) & ~1; - /* bit 0 set signifies read only partition */ - if (be32_to_cpu(part->len) & 1) - (*pparts)[i].mask_flags = MTD_WRITEABLE; - - if (names && (plen > 0)) { - int len = strlen(names) + 1; - - (*pparts)[i].name = (char *)names; - plen -= len; - names += len; - } else { - (*pparts)[i].name = "unnamed"; - } - - part++; - } - - return nr_parts; -} - -static struct mtd_part_parser ofoldpart_parser = { - .owner = THIS_MODULE, - .parse_fn = parse_ofoldpart_partitions, - .name = "ofoldpart", -}; - -static int __init ofpart_parser_init(void) -{ - int rc; - rc = register_mtd_parser(&ofpart_parser); - if (rc) - goto out; - - rc = register_mtd_parser(&ofoldpart_parser); - if (!rc) - return 0; - - deregister_mtd_parser(&ofoldpart_parser); -out: - return rc; -} - -module_init(ofpart_parser_init); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Parser for MTD partitioning information in device tree"); -MODULE_AUTHOR("Vitaly Wool, David Gibson"); -/* - * When MTD core cannot find the requested parser, it tries to load the module - * with the same name. Since we provide the ofoldpart parser, we should have - * the corresponding alias. - */ -MODULE_ALIAS("ofoldpart"); |