From 55100cfa339db9c391f8c4667af02a6f7160125b Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Mon, 30 Oct 2017 14:48:31 -0400 Subject: 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 Acked-by: Boris Brezillon Tested-by: Chris Brandt [rw: fixed build] Signed-off-by: Richard Weinberger --- drivers/mtd/chips/map_rom.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'drivers/mtd') 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; -- cgit v1.2.3