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mtd: spi-nor: add a helper to find the spi_device_id

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Add the spi_nor_match_id() to find the proper spi_device_id with the
NOR flash's name in the spi_nor_ids table.

Signed-off-by: Huang Shijie <b32955@freescale.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Huang Shijie 2014-02-24 18:37:40 +08:00 committed by Brian Norris
parent 03e296f613
commit 0d8c11c012
2 changed files with 24 additions and 0 deletions
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12
drivers/mtd/spi-nor/spi-nor.c
View File

@ -1082,6 +1082,18 @@ int spi_nor_scan(struct spi_nor *nor, const struct spi_device_id *id,
return 0;
}
const struct spi_device_id *spi_nor_match_id(char *name)
{
const struct spi_device_id *id = spi_nor_ids;
while (id->name[0]) {
if (!strcmp(name, id->name))
return id;
id++;
}
return NULL;
}
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Huang Shijie <shijie8@gmail.com>");
MODULE_AUTHOR("Mike Lavender");

12
include/linux/mtd/spi-nor.h
View File

@ -182,4 +182,16 @@ int spi_nor_scan(struct spi_nor *nor, const struct spi_device_id *id,
enum read_mode mode);
extern const struct spi_device_id spi_nor_ids[];
/**
* spi_nor_match_id() - find the spi_device_id by the name
* @name: the name of the spi_device_id
*
* The drivers use this function to find the spi_device_id
* specified by the @name.
*
* Return: returns the right spi_device_id pointer on success,
* and returns NULL on failure.
*/
const struct spi_device_id *spi_nor_match_id(char *name);
#endif