Messages in this thread Patch in this message | | | From | Robert Jarzmik <> | Subject | [PATCH v2] mtd: nand: pxa3xx_nand: add register access debug | Date | Mon, 25 Jan 2016 21:29:45 +0100 |
| |
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> --- drivers/mtd/nand/pxa3xx_nand.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-)
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c index e453ae9a17fa..0845d09e14c1 100644 --- a/drivers/mtd/nand/pxa3xx_nand.c +++ b/drivers/mtd/nand/pxa3xx_nand.c @@ -136,11 +136,23 @@ #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 { -- 2.1.4
| |