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

From: Ritesh Harjani
Date: Sun Jan 15 2017 - 21:16:04 EST


Hi Jeremy,

Thanks for the review.

On 1/14/2017 3:51 AM, Jeremy McNicoll wrote:
On Fri, Dec 30, 2016 at 05:02:09PM +0530, Ritesh Harjani wrote:
From: Sahitya Tummala <stummala@xxxxxxxxxxxxxx>

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


This change and 2/3 look like they can be squished together into
one patch. At least that is how I did it,

I felt it is better this way to keep sdhci and sdhci-msm patches separate. This patch provides mechanism and patch 3/3 provides
implementation of ->platform_dumpregs in sdhci-msm.

Regards
Ritesh



https://patchwork.kernel.org/patch/9442449/

-jeremy


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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--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project