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    Subject[PATCH V5 10/26] mmc: sdhci-uhs2: dump UHS-II registers
    Date
    From: AKASHI Takahiro <takahiro.akashi@linaro.org>

    Dump UHS-II specific registers, if available, in sdhci_dumpregs()
    for informative/debugging use.

    Signed-off-by: Ben Chuang <ben.chuang@genesyslogic.com.tw>
    Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
    ---
    drivers/mmc/host/sdhci-uhs2.c | 30 ++++++++++++++++++++++++++++++
    drivers/mmc/host/sdhci-uhs2.h | 4 ++++
    drivers/mmc/host/sdhci.c | 3 +++
    3 files changed, 37 insertions(+)

    diff --git a/drivers/mmc/host/sdhci-uhs2.c b/drivers/mmc/host/sdhci-uhs2.c
    index f29d3a4ed43c..08905ed081fb 100644
    --- a/drivers/mmc/host/sdhci-uhs2.c
    +++ b/drivers/mmc/host/sdhci-uhs2.c
    @@ -18,6 +18,36 @@
    #define DRIVER_NAME "sdhci_uhs2"
    #define DBG(f, x...) \
    pr_debug(DRIVER_NAME " [%s()]: " f, __func__, ## x)
    +#define SDHCI_UHS2_DUMP(f, x...) \
    + pr_err("%s: " DRIVER_NAME ": " f, mmc_hostname(host->mmc), ## x)
    +
    +void sdhci_uhs2_dump_regs(struct sdhci_host *host)
    +{
    + if (!host->mmc || !(host->mmc->flags & MMC_UHS2_SUPPORT))
    + return;
    +
    + SDHCI_UHS2_DUMP("==================== UHS2 ==================\n");
    + SDHCI_UHS2_DUMP("Blk Size: 0x%08x | Blk Cnt: 0x%08x\n",
    + sdhci_readw(host, SDHCI_UHS2_BLOCK_SIZE),
    + sdhci_readl(host, SDHCI_UHS2_BLOCK_COUNT));
    + SDHCI_UHS2_DUMP("Cmd: 0x%08x | Trn mode: 0x%08x\n",
    + sdhci_readw(host, SDHCI_UHS2_COMMAND),
    + sdhci_readw(host, SDHCI_UHS2_TRANS_MODE));
    + SDHCI_UHS2_DUMP("Int Stat: 0x%08x | Dev Sel : 0x%08x\n",
    + sdhci_readw(host, SDHCI_UHS2_DEV_INT_STATUS),
    + sdhci_readb(host, SDHCI_UHS2_DEV_SELECT));
    + SDHCI_UHS2_DUMP("Dev Int Code: 0x%08x\n",
    + sdhci_readb(host, SDHCI_UHS2_DEV_INT_CODE));
    + SDHCI_UHS2_DUMP("Reset: 0x%08x | Timer: 0x%08x\n",
    + sdhci_readw(host, SDHCI_UHS2_SW_RESET),
    + sdhci_readw(host, SDHCI_UHS2_TIMER_CTRL));
    + SDHCI_UHS2_DUMP("ErrInt: 0x%08x | ErrIntEn: 0x%08x\n",
    + sdhci_readl(host, SDHCI_UHS2_ERR_INT_STATUS),
    + sdhci_readl(host, SDHCI_UHS2_ERR_INT_STATUS_EN));
    + SDHCI_UHS2_DUMP("ErrSigEn: 0x%08x\n",
    + sdhci_readl(host, SDHCI_UHS2_ERR_INT_SIG_EN));
    +}
    +EXPORT_SYMBOL_GPL(sdhci_uhs2_dump_regs);

    /*****************************************************************************\
    * *
    diff --git a/drivers/mmc/host/sdhci-uhs2.h b/drivers/mmc/host/sdhci-uhs2.h
    index 5610affebdf3..afdb05d6056b 100644
    --- a/drivers/mmc/host/sdhci-uhs2.h
    +++ b/drivers/mmc/host/sdhci-uhs2.h
    @@ -207,4 +207,8 @@
    #define SDHCI_UHS2_EMBED_CTRL 0xE6
    #define SDHCI_UHS2_VENDOR 0xE8

    +struct sdhci_host;
    +
    +void sdhci_uhs2_dump_regs(struct sdhci_host *host);
    +
    #endif /* __SDHCI_UHS2_H */
    diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
    index fef03de85b99..2cdd183c8ada 100644
    --- a/drivers/mmc/host/sdhci.c
    +++ b/drivers/mmc/host/sdhci.c
    @@ -110,6 +110,9 @@ void sdhci_dumpregs(struct sdhci_host *host)
    }
    }

    + if (host->ops->dump_uhs2_regs)
    + host->ops->dump_uhs2_regs(host);
    +
    if (host->ops->dump_vendor_regs)
    host->ops->dump_vendor_regs(host);

    --
    2.25.1
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