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s3cmci: add debugfs support for examining driver and hardware state

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Export driver state and hardware register state via debugfs entries
created under a directory formed from dev_name() on the probed device when
CONFIG_DEBUG_FS is set.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ben Dooks
2009-10-01 15:44:17 -07:00
committed by Linus Torvalds
parent e6130aeffd
commit 9bdd203b4d
2 changed files with 132 additions and 0 deletions
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6
drivers/mmc/host/s3cmci.h
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@@ -68,6 +68,12 @@ struct s3cmci_host {
unsigned int ccnt, dcnt;
struct tasklet_struct pio_tasklet;
#ifdef CONFIG_DEBUG_FS
struct dentry *debug_root;
struct dentry *debug_state;
struct dentry *debug_regs;
#endif
#ifdef CONFIG_CPU_FREQ
struct notifier_block freq_transition;
#endif