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mtd: spi-nor: enable the debugfs for the partname and partid

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This patch adds spi_nor_debugfs_init() for the debugfs initialization.
With this patch, we can read the partname and partid through the
debugfs.

The output of new debugfs nodes on my device are:
cat /sys/kernel/debug/mtd/mtd0/partid
spi-nor:ef6017
cat /sys/kernel/debug/mtd/mtd0/partname
w25q64dw

Signed-off-by: Zhuohao Lee <zhuohao@chromium.org>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
This commit is contained in:
Zhuohao Lee 2019-08-28 09:08:02 +03:00 committed by Tudor Ambarus
parent 1018c94be6
commit dcc935b06f
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GPG Key ID: 4B554F47A58D14E9
1 changed files with 12 additions and 0 deletions
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12
drivers/mtd/spi-nor/spi-nor.c
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@ -4767,6 +4767,16 @@ static int spi_nor_set_addr_width(struct spi_nor *nor)
return 0;
}
static void spi_nor_debugfs_init(struct spi_nor *nor,
const struct flash_info *info)
{
struct mtd_info *mtd = &nor->mtd;
mtd->dbg.partname = info->name;
mtd->dbg.partid = devm_kasprintf(nor->dev, GFP_KERNEL, "spi-nor:%*phN",
info->id_len, info->id);
}
static const struct flash_info *spi_nor_get_flash_info(struct spi_nor *nor,
const char *name)
{
@ -4847,6 +4857,8 @@ int spi_nor_scan(struct spi_nor *nor, const char *name,
nor->info = info;
spi_nor_debugfs_init(nor, info);
mutex_init(&nor->lock);
/*