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authorNicolas Pitre <nicolas.pitre@linaro.org>2017-10-30 14:48:31 -0400
committerRichard Weinberger <richard@nod.at>2017-11-13 21:39:18 +0100
commit55100cfa339db9c391f8c4667af02a6f7160125b (patch)
tree92ab06525792d163d0776578ba4c6e37a8489b18
parent2caaf2d83a76bc35b4694f48d62ff2cab2d1105d (diff)
downloadlinux-55100cfa339db9c391f8c4667af02a6f7160125b.tar.bz2
mtd: chips/map_rom.c: implement point and unpoint methods
This will allow for the removal of the get_unmapped_area method later. Signed-off-by: Nicolas Pitre <nico@linaro.org> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Tested-by: Chris Brandt <chris.brandt@renesas.com> [rw: fixed build] Signed-off-by: Richard Weinberger <richard@nod.at>
-rw-r--r--drivers/mtd/chips/map_rom.c25
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/mtd/chips/map_rom.c b/drivers/mtd/chips/map_rom.c
index e67f73ab44c9..72934c1fbbe0 100644
--- a/drivers/mtd/chips/map_rom.c
+++ b/drivers/mtd/chips/map_rom.c
@@ -22,6 +22,10 @@ static struct mtd_info *map_rom_probe(struct map_info *map);
static int maprom_erase (struct mtd_info *mtd, struct erase_info *info);
static unsigned long maprom_unmapped_area(struct mtd_info *, unsigned long,
unsigned long, unsigned long);
+static int maprom_point (struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, void **virt, resource_size_t *phys);
+static int maprom_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
+
static struct mtd_chip_driver maprom_chipdrv = {
.probe = map_rom_probe,
@@ -52,6 +56,8 @@ static struct mtd_info *map_rom_probe(struct map_info *map)
mtd->type = MTD_ROM;
mtd->size = map->size;
mtd->_get_unmapped_area = maprom_unmapped_area;
+ mtd->_point = maprom_point;
+ mtd->_unpoint = maprom_unpoint;
mtd->_read = maprom_read;
mtd->_write = maprom_write;
mtd->_sync = maprom_nop;
@@ -80,6 +86,25 @@ static unsigned long maprom_unmapped_area(struct mtd_info *mtd,
return (unsigned long) map->virt + offset;
}
+static int maprom_point(struct mtd_info *mtd, loff_t from, size_t len,
+ size_t *retlen, void **virt, resource_size_t *phys)
+{
+ struct map_info *map = mtd->priv;
+
+ if (!map->virt)
+ return -EINVAL;
+ *virt = map->virt + from;
+ if (phys)
+ *phys = map->phys + from;
+ *retlen = len;
+ return 0;
+}
+
+static int maprom_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
+{
+ return 0;
+}
+
static int maprom_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf)
{
struct map_info *map = mtd->priv;