[PATCH v5 6/8] mtd: spi-nor: add a helper to find the spi_device_id
From: Huang Shijie <hidden>
Date: 2014-02-24 10:37:40
Also in:
linux-arm-kernel, linux-spi
Subsystem:
memory technology devices (mtd), spi nor subsystem, the rest · Maintainers:
Miquel Raynal, Richard Weinberger, Vignesh Raghavendra, Pratyush Yadav, Michael Walle, Linus Torvalds
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 <redacted> --- drivers/mtd/spi-nor/spi-nor.c | 12 ++++++++++++ include/linux/mtd/spi-nor.h | 12 ++++++++++++ 2 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index a840e88..6c8fd01 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c@@ -1081,6 +1081,18 @@ 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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>"); MODULE_AUTHOR("Mike Lavender");
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
index 16d8409..41dae78 100644
--- a/include/linux/mtd/spi-nor.h
+++ b/include/linux/mtd/spi-nor.h@@ -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
--
1.7.2.rc3
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