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Commit cc561245 authored by Asutosh Das's avatar Asutosh Das
Browse files

sysfs: ufs-qcom: Add sysfs entries for flashpvl 



Added entries are bus_speed_mode, clk_status and
err_count.

Change-Id: I459c75048d737651d977f5a5c6aa5dd84553156c
Signed-off-by: default avatarAsutosh Das <asutoshd@codeaurora.org>
parent 19a5a7fa

drivers/scsi/ufs/ufs-qcom.c

+74 −0
Original line number Diff line number Diff line
@@ -1689,6 +1689,8 @@ static int ufs_qcom_setup_clocks(struct ufs_hba *hba, bool on, 
		} else {

			err = ufs_qcom_set_bus_vote(hba, false);

		}

		if (!err)

			atomic_set(&host->clks_on, on);

		break;

	}
@@ -2526,6 +2528,8 @@ static int ufs_qcom_clk_scale_notify(struct ufs_hba *hba, 
		ufshcd_uic_hibern8_exit(hba);

	}



	if (!err)

		atomic_set(&host->scale_up, scale_up);

out:

	return err;

}
@@ -2943,9 +2947,79 @@ static ssize_t power_mode_show(struct device *dev, 


static DEVICE_ATTR_RO(power_mode);



static ssize_t bus_speed_mode_show(struct device *dev,

			struct device_attribute *attr, char *buf)

{

	struct ufs_hba *hba = dev_get_drvdata(dev);

	struct ufs_qcom_host *host = ufshcd_get_variant(hba);



	return scnprintf(buf, PAGE_SIZE, "%d\n",

			 !!atomic_read(&host->scale_up));

}



static DEVICE_ATTR_RO(bus_speed_mode);



static ssize_t clk_status_show(struct device *dev,

			struct device_attribute *attr, char *buf)

{

	struct ufs_hba *hba = dev_get_drvdata(dev);

	struct ufs_qcom_host *host = ufshcd_get_variant(hba);



	return scnprintf(buf, PAGE_SIZE, "%d\n",

			 !!atomic_read(&host->clks_on));

}



static DEVICE_ATTR_RO(clk_status);



static unsigned int ufs_qcom_gec(struct ufs_hba *hba,

				 struct ufs_err_reg_hist *err_hist,

				 char *err_name)

{

	unsigned long flags;

	int i, cnt_err = 0;



	spin_lock_irqsave(hba->host->host_lock, flags);

	for (i = 0; i < UFS_ERR_REG_HIST_LENGTH; i++) {

		int p = (i + err_hist->pos) % UFS_ERR_REG_HIST_LENGTH;



		if (err_hist->tstamp[p] == 0)

			continue;

		dev_err(hba->dev, "%s[%d] = 0x%x at %lld us\n", err_name, p,

			err_hist->reg[p], ktime_to_us(err_hist->tstamp[p]));



		++cnt_err;

	}



	spin_unlock_irqrestore(hba->host->host_lock, flags);

	return cnt_err;

}



static ssize_t err_count_show(struct device *dev,

			struct device_attribute *attr, char *buf)

{

	struct ufs_hba *hba = dev_get_drvdata(dev);



	return scnprintf(buf, PAGE_SIZE,

			 "%s: %d\n%s: %d\n%s: %d\n",

			 "pa_err_cnt_total",

			 ufs_qcom_gec(hba, &hba->ufs_stats.pa_err,

				      "pa_err_cnt_total"),

			 "dl_err_cnt_total",

			 ufs_qcom_gec(hba, &hba->ufs_stats.dl_err,

				      "dl_err_cnt_total"),

			 "dme_err_cnt",

			 ufs_qcom_gec(hba, &hba->ufs_stats.dme_err,

				      "dme_err_cnt"));

}



static DEVICE_ATTR_RO(err_count);



static struct attribute *ufs_qcom_sysfs_attrs[] = {

	&dev_attr_err_state.attr,

	&dev_attr_power_mode.attr,

	&dev_attr_bus_speed_mode.attr,

	&dev_attr_clk_status.attr,

	&dev_attr_err_count.attr,

	NULL

};

drivers/scsi/ufs/ufs-qcom.h

+3 −0
Original line number Diff line number Diff line
@@ -337,6 +337,9 @@ struct ufs_qcom_host { 
	/* Protect the usage of is_phy_pwr_on against racing */

	struct mutex phy_mutex;

	bool err_occurred;

	/* FlashPVL entries */

	atomic_t scale_up;

	atomic_t clks_on;

};



static inline u32