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authorZhuohao Lee <zhuohao@chromium.org>2019-08-28 09:08:02 +0300
committerTudor Ambarus <tudor.ambarus@microchip.com>2019-08-29 10:36:54 +0300
commitdcc935b06f1f29aa9f93008df3d13ab84ab0bbbb (patch)
tree4926eb694a2d0b9ffd39bafb38aee8b02ccff808 /drivers/mtd
parent1018c94be6ea073115f6bcf993d6492138d2b8e3 (diff)
downloadlinux-dcc935b06f1f29aa9f93008df3d13ab84ab0bbbb.tar.gz
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.c12
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);
/*