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crypto: omap-aes - Add useful debug macros

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When DEBUG is enabled, these macros can be used to print variables in integer
and hex format, and clearly display which registers, offsets and values are
being read/written , including printing the names of the offsets and their values.

Using statement expression macros in read path as,
Suggested-by: Joe Perches <joe@perches.com>

Signed-off-by: Joel Fernandes <joelf@ti.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Joel Fernandes 2013-08-18 00:56:11 -05:00 committed by Herbert Xu
parent 257aff5154
commit 016af9b5c5
1 changed files with 23 additions and 1 deletions
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24
drivers/crypto/omap-aes.c
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@ -13,7 +13,9 @@
*
*/
#define pr_fmt(fmt) "%s: " fmt, __func__
#define pr_fmt(fmt) "%20s: " fmt, __func__
#define prn(num) pr_debug(#num "=%d\n", num)
#define prx(num) pr_debug(#num "=%x\n", num)
#include <linux/err.h>
#include <linux/module.h>
@ -172,16 +174,36 @@ struct omap_aes_dev {
static LIST_HEAD(dev_list);
static DEFINE_SPINLOCK(list_lock);
#ifdef DEBUG
#define omap_aes_read(dd, offset) \
({ \
int _read_ret; \
_read_ret = __raw_readl(dd->io_base + offset); \
pr_debug("omap_aes_read(" #offset "=%#x)= %#x\n", \
offset, _read_ret); \
_read_ret; \
})
#else
static inline u32 omap_aes_read(struct omap_aes_dev *dd, u32 offset)
{
return __raw_readl(dd->io_base + offset);
}
#endif
#ifdef DEBUG
#define omap_aes_write(dd, offset, value) \
do { \
pr_debug("omap_aes_write(" #offset "=%#x) value=%#x\n", \
offset, value); \
__raw_writel(value, dd->io_base + offset); \
} while (0)
#else
static inline void omap_aes_write(struct omap_aes_dev *dd, u32 offset,
u32 value)
{
__raw_writel(value, dd->io_base + offset);
}
#endif
static inline void omap_aes_write_mask(struct omap_aes_dev *dd, u32 offset,
u32 value, u32 mask)