diff options
| author |   Zhuohao Lee <zhuohao@chromium.org> | 2019-08-28 09:08:02 +0300 |
|---|---|---|
| committer |   Tudor Ambarus <tudor.ambarus@microchip.com> | 2019-08-29 10:36:54 +0300 |
| commit | dcc935b06f1f29aa9f93008df3d13ab84ab0bbbb (patch) | |
| tree | 4926eb694a2d0b9ffd39bafb38aee8b02ccff808 /drivers/mtd | |
| parent | mtd: mtdcore: add debugfs nodes for querying the flash name and id (diff) | |
| download | linux-dev-dcc935b06f1f29aa9f93008df3d13ab84ab0bbbb.tar.xz linux-dev-dcc935b06f1f29aa9f93008df3d13ab84ab0bbbb.zip | |
mtd: spi-nor: enable the debugfs for the partname and partid
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>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/spi-nor.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 79c8f1dd8c6b..6a2fff0598af 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -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); /* |