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| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2017-10-30 14:48:31 -0400 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2017-11-13 21:39:18 +0100 |
| commit | 55100cfa339db9c391f8c4667af02a6f7160125b (patch) | |
| tree | 92ab06525792d163d0776578ba4c6e37a8489b18 /drivers/mtd | |
| parent | 2caaf2d83a76bc35b4694f48d62ff2cab2d1105d (diff) | |
| download | linux-55100cfa339db9c391f8c4667af02a6f7160125b.tar.gz linux-55100cfa339db9c391f8c4667af02a6f7160125b.tar.bz2 linux-55100cfa339db9c391f8c4667af02a6f7160125b.zip | |
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>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/chips/map_rom.c | 25 |
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; |