[RFC PATCH 1/3] mmc: sdhci: Add platform_dumpregs callback support to sdhci_ops.

Ritesh Harjani
2016-12-30T11:32:09Z

From: Sahitya Tummala <stummala@codeaurora.org>

Add new host operation ->platform_dumpregs to provide a
mechanism through which host drivers can dump platform
specific registers in addition to SDHC registers
during error conditions.

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
---
drivers/mmc/host/sdhci.c | 3 +++
drivers/mmc/host/sdhci.h | 1 +
2 files changed, 4 insertions(+)

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 2390980..73a8918 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -101,6 +101,9 @@ static void sdhci_dumpregs(struct sdhci_host *host)
readl(host->ioaddr + SDHCI_ADMA_ADDRESS));
}

+ if (host->ops->platform_dumpregs)
+ host->ops->platform_dumpregs(host);
+
pr_err(DRIVER_NAME ": ===========================================\n");
}

diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 0b66f21..400f3a1 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -564,6 +564,7 @@ struct sdhci_ops {
struct mmc_card *card,
unsigned int max_dtr, int host_drv,
int card_drv, int *drv_type);
+ void (*platform_dumpregs)(struct sdhci_host *host);
};

#ifdef CONFIG_MMC_SDHCI_IO_ACCESSORS
--
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