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Commit 2abd9f06 authored by Ram Prakash Gupta's avatar Ram Prakash Gupta
Browse files

mmc: sdhci-msm: Add sysfs support for mask and match 



Add sysfs support for mask and match.

Change-Id: If4581087e9479f3cff2f23121eae1153bd9c5ccf
Signed-off-by: default avatarRam Prakash Gupta <rampraka@codeaurora.org>
parent 9cc9e2d0

drivers/mmc/host/sdhci-msm.c

+53 −0
Original line number Diff line number Diff line
@@ -1281,6 +1281,45 @@ void sdhci_msm_mm_dbg_configure(struct sdhci_host *host, u32 mask, 
	readl_relaxed(host->ioaddr + SDCC_DEBUG_FEATURE_CFG_REG);

}



static ssize_t store_mask_and_match(struct device *dev,

		struct device_attribute *attr, const char *buf, size_t count)

{

	struct sdhci_host *host = dev_get_drvdata(dev);

	unsigned long value;

	char *token;

	int i = 0;

	u32 mask, match, bit_shift, testbus;



	char *temp = (char *)buf;



	if (!host)

		return -EINVAL;



	while ((token = strsep(&temp, " "))) {

		kstrtoul(token, 0, &value);

		if (i == 0)

			mask = value;

		else if (i == 1)

			match = value;

		else if (i == 2)

			bit_shift = value;

		else if (i == 3) {

			testbus = value;

			break;

		}

		i++;

	}



	pr_info("%s: M&M parameter passed are: %d %d %d %d\n",

		mmc_hostname(host->mmc), mask, match, bit_shift, testbus);

	pm_runtime_get_sync(dev);

	sdhci_msm_mm_dbg_configure(host, mask, match, bit_shift, testbus);

	pm_runtime_put_sync(dev);



	pr_debug("%s: M&M debug enabled.\n", mmc_hostname(host->mmc));

	return count;

}



/* Enter sdcc debug mode */

void sdhci_msm_enter_dbg_mode(struct sdhci_host *host)

{
@@ -5691,6 +5730,20 @@ static int sdhci_msm_probe(struct platform_device *pdev) 
		device_remove_file(&pdev->dev, &msm_host->auto_cmd21_attr);

	}



	if (IPCAT_MINOR_MASK(readl_relaxed(host->ioaddr +

				SDCC_IP_CATALOG)) >= 2) {

		msm_host->mask_and_match.store = store_mask_and_match;

		sysfs_attr_init(&msm_host->mask_and_match.attr);

		msm_host->mask_and_match.attr.name = "mask_and_match";

		msm_host->mask_and_match.attr.mode = 0644;

		ret = device_create_file(&pdev->dev,

					&msm_host->mask_and_match);

		if (ret) {

			pr_err("%s: %s: failed creating M&M attr: %d\n",

					mmc_hostname(host->mmc), __func__, ret);

		}

	}



	if (sdhci_msm_is_bootdevice(&pdev->dev))

		mmc_flush_detect_work(host->mmc);

	/* Successful initialization */

drivers/mmc/host/sdhci-msm.h

+1 −0
Original line number Diff line number Diff line
@@ -288,6 +288,7 @@ struct sdhci_msm_host { 
	struct completion pwr_irq_completion;

	struct sdhci_msm_bus_vote msm_bus_vote;

	struct device_attribute	polling;

	struct device_attribute mask_and_match;

	u32 clk_rate; /* Keeps track of current clock rate that is set */

	bool tuning_done;

	bool calibration_done;