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Commit 55100cfa authored by Nicolas Pitre's avatar Nicolas Pitre Committed by Richard Weinberger
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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: default avatarNicolas Pitre <nico@linaro.org>
Acked-by: default avatarBoris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: default avatarChris Brandt <chris.brandt@renesas.com>
[rw: fixed build]
Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
parent 2caaf2d8

drivers/mtd/chips/map_rom.c

+25 −0
Original line number Original line Diff line number Diff line
@@ -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 int maprom_erase (struct mtd_info *mtd, struct erase_info *info);

static unsigned long maprom_unmapped_area(struct mtd_info *, unsigned long,

static unsigned long maprom_unmapped_area(struct mtd_info *, unsigned long,

					  unsigned long, 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 = {

static struct mtd_chip_driver maprom_chipdrv = {

	.probe	= map_rom_probe,

	.probe	= map_rom_probe,
@@ -52,6 +56,8 @@ static struct mtd_info *map_rom_probe(struct map_info *map) 
	mtd->type = MTD_ROM;

	mtd->type = MTD_ROM;

	mtd->size = map->size;

	mtd->size = map->size;

	mtd->_get_unmapped_area = maprom_unmapped_area;

	mtd->_get_unmapped_area = maprom_unmapped_area;

	mtd->_point = maprom_point;

	mtd->_unpoint = maprom_unpoint;

	mtd->_read = maprom_read;

	mtd->_read = maprom_read;

	mtd->_write = maprom_write;

	mtd->_write = maprom_write;

	mtd->_sync = maprom_nop;

	mtd->_sync = maprom_nop;
@@ -80,6 +86,25 @@ static unsigned long maprom_unmapped_area(struct mtd_info *mtd, 
	return (unsigned long) map->virt + offset;

	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)

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;

	struct map_info *map = mtd->priv;