This adds a device_node member to struct cdev and a function to find a cdev by device_node. This also removes the setting of cdev->dev->device_node in the of partition parser. We must not set the device since it may not refer to a partition but to a whole device with partitions. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
88 lines
2 KiB
C
88 lines
2 KiB
C
/*
|
|
* partition.c - devicetree partition parsing
|
|
*
|
|
* Copyright (c) 2012 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
|
|
*
|
|
* based on Linux devicetree support
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
#include <common.h>
|
|
#include <of.h>
|
|
#include <malloc.h>
|
|
#include <linux/mtd/mtd.h>
|
|
#include <linux/err.h>
|
|
#include <nand.h>
|
|
|
|
struct cdev *of_parse_partition(struct cdev *cdev, struct device_node *node)
|
|
{
|
|
const char *partname;
|
|
char *filename;
|
|
struct cdev *new;
|
|
const __be32 *reg;
|
|
unsigned long offset, size;
|
|
const char *name;
|
|
int len;
|
|
unsigned long flags = 0;
|
|
|
|
if (!node)
|
|
return NULL;
|
|
|
|
reg = of_get_property(node, "reg", &len);
|
|
if (!reg)
|
|
return NULL;
|
|
|
|
offset = be32_to_cpu(reg[0]);
|
|
size = be32_to_cpu(reg[1]);
|
|
|
|
partname = of_get_property(node, "label", &len);
|
|
if (!partname)
|
|
partname = of_get_property(node, "name", &len);
|
|
if (!partname)
|
|
return NULL;
|
|
|
|
name = (char *)partname;
|
|
|
|
debug("add partition: %s.%s 0x%08lx 0x%08lx\n", cdev->name, partname, offset, size);
|
|
|
|
if (of_get_property(node, "read-only", &len))
|
|
flags = DEVFS_PARTITION_READONLY;
|
|
|
|
filename = asprintf("%s.%s", cdev->name, partname);
|
|
|
|
new = devfs_add_partition(cdev->name, offset, size, flags, filename);
|
|
if (IS_ERR(new))
|
|
new = NULL;
|
|
|
|
if (new)
|
|
new->device_node = node;;
|
|
|
|
free(filename);
|
|
|
|
return new;
|
|
}
|
|
|
|
int of_parse_partitions(struct cdev *cdev, struct device_node *node)
|
|
{
|
|
struct device_node *n;
|
|
|
|
if (!node)
|
|
return -EINVAL;
|
|
|
|
for_each_child_of_node(node, n) {
|
|
of_parse_partition(cdev, n);
|
|
}
|
|
|
|
return 0;
|
|
}
|