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| author | Robert Jarzmik <robert.jarzmik@free.fr> | 2016-01-25 21:29:45 +0100 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2016-02-01 09:58:38 -0800 |
| commit | 26d072e36c732e6fe7eebdceb5e0497ddf256ded (patch) | |
| tree | e743cd25f4ff57117eec3521e54f503fe80d30b9 | |
| parent | 02c3b0bd69a537557484e46a5937874a2d2ad454 (diff) | |
| download | lwn-26d072e36c732e6fe7eebdceb5e0497ddf256ded.tar.gz lwn-26d072e36c732e6fe7eebdceb5e0497ddf256ded.zip | |
mtd: nand: pxa3xx_nand: add register access debug
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>
| -rw-r--r-- | drivers/mtd/nand/pxa3xx_nand.c | 22 |
1 files changed, 17 insertions, 5 deletions
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index 86fc245dc71a..e42496adda8d 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -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_readl(info, off) \ - readl_relaxed((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) \ + ({ \ + 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 { |