mirror of https://github.com/hak5/openwrt.git
95 lines
2.5 KiB
Diff
95 lines
2.5 KiB
Diff
--- a/drivers/mtd/maps/physmap.c
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+++ b/drivers/mtd/maps/physmap.c
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@@ -31,6 +31,66 @@ struct physmap_flash_info {
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int vpp_refcnt;
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};
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+static struct platform_device *physmap_map2pdev(struct map_info *map)
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+{
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+ return (struct platform_device *) map->map_priv_1;
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+}
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+
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+static void physmap_lock(struct map_info *map)
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+{
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+ struct platform_device *pdev;
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+ struct physmap_flash_data *physmap_data;
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+
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+ pdev = physmap_map2pdev(map);
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+ physmap_data = pdev->dev.platform_data;
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+ physmap_data->lock(pdev);
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+}
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+
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+static void physmap_unlock(struct map_info *map)
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+{
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+ struct platform_device *pdev;
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+ struct physmap_flash_data *physmap_data;
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+
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+ pdev = physmap_map2pdev(map);
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+ physmap_data = pdev->dev.platform_data;
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+ physmap_data->unlock(pdev);
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+}
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+
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+static map_word physmap_flash_read_lock(struct map_info *map, unsigned long ofs)
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+{
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+ map_word ret;
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+
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+ physmap_lock(map);
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+ ret = inline_map_read(map, ofs);
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+ physmap_unlock(map);
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+
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+ return ret;
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+}
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+
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+static void physmap_flash_write_lock(struct map_info *map, map_word d,
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+ unsigned long ofs)
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+{
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+ physmap_lock(map);
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+ inline_map_write(map, d, ofs);
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+ physmap_unlock(map);
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+}
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+
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+static void physmap_flash_copy_from_lock(struct map_info *map, void *to,
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+ unsigned long from, ssize_t len)
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+{
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+ physmap_lock(map);
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+ inline_map_copy_from(map, to, from, len);
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+ physmap_unlock(map);
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+}
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+
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+static void physmap_flash_copy_to_lock(struct map_info *map, unsigned long to,
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+ const void *from, ssize_t len)
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+{
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+ physmap_lock(map);
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+ inline_map_copy_to(map, to, from, len);
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+ physmap_unlock(map);
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+}
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+
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static int physmap_flash_remove(struct platform_device *dev)
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{
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struct physmap_flash_info *info;
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@@ -157,6 +217,13 @@ static int physmap_flash_probe(struct pl
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simple_map_init(&info->map[i]);
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+ if (physmap_data->lock && physmap_data->unlock) {
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+ info->map[i].read = physmap_flash_read_lock;
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+ info->map[i].write = physmap_flash_write_lock;
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+ info->map[i].copy_from = physmap_flash_copy_from_lock;
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+ info->map[i].copy_to = physmap_flash_copy_to_lock;
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+ }
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+
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probe_type = rom_probe_types;
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if (physmap_data->probe_type == NULL) {
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for (; info->mtd[i] == NULL && *probe_type != NULL; probe_type++)
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--- a/include/linux/mtd/physmap.h
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+++ b/include/linux/mtd/physmap.h
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@@ -26,6 +26,8 @@ struct physmap_flash_data {
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unsigned int width;
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int (*init)(struct platform_device *);
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void (*exit)(struct platform_device *);
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+ void (*lock)(struct platform_device *);
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+ void (*unlock)(struct platform_device *);
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void (*set_vpp)(struct platform_device *, int);
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unsigned int nr_parts;
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unsigned int pfow_base;
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