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mtd: nand: pxa3xx_nand: add register access debug

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Add verbose debug for register accesses. This enables easier debugging
by following where and how hardware is stimulated, and how it answers.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
This commit is contained in:
Robert Jarzmik 2016-01-25 21:29:45 +01:00 committed by Brian Norris
parent 02c3b0bd69
commit 26d072e36c
1 changed files with 16 additions and 4 deletions
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20
drivers/mtd/nand/pxa3xx_nand.c
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@ -131,11 +131,23 @@
#define READ_ID_BYTES 7
/* macros for registers read/write */
#define nand_writel(info, off, val) \
writel_relaxed((val), (info)->mmio_base + (off))
#define nand_writel(info, off, val) \
do { \
dev_vdbg(&info->pdev->dev, \
"%s():%d nand_writel(0x%x, 0x%04x)\n", \
__func__, __LINE__, (val), (off)); \
writel_relaxed((val), (info)->mmio_base + (off)); \
} while (0)
#define nand_readl(info, off) \
readl_relaxed((info)->mmio_base + (off))
#define nand_readl(info, off) \
({ \
unsigned int _v; \
_v = readl_relaxed((info)->mmio_base + (off)); \
dev_vdbg(&info->pdev->dev, \
"%s():%d nand_readl(0x%04x) = 0x%x\n", \
__func__, __LINE__, (off), _v); \
_v; \
})
/* error code and state */
enum {