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authorHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2008-07-24 14:18:57 +0200
committerPierre Ossman <drzeus@drzeus.cx>2008-07-27 01:26:16 +0200
commit6edd8ee60ac9b974bd6ec3b1bcb2aab02762fa8c (patch)
tree0f24dc879d9645935974489d152dd83815fcff68 /include/linux/mmc
parentc5d5e9c40fc6cabedd5fdc7441e6e9d37f5c9bba (diff)
mmc: Export internal host state through debugfs
When CONFIG_DEBUG_FS is set, create a few files under /sys/kernel/debug containing information about an mmc host's internal state. Currently, just a single file is created, "ios", which contains information about the current operating parameters for the bus (clock speed, bus width, etc.) Host drivers can add additional files and directories under the host's root directory by passing the debugfs_root field in struct mmc_host as the 'parent' parameter to debugfs_create_*. Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
Diffstat (limited to 'include/linux/mmc')
-rw-r--r--include/linux/mmc/host.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index 10a2080086c..9c288c90987 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -157,6 +157,8 @@ struct mmc_host {
struct led_trigger *led; /* activity led */
#endif
+ struct dentry *debugfs_root;
+
unsigned long private[0] ____cacheline_aligned;
};