Merge "sysfs: ufs-qcom: Add sysfs entries for flashpvl" (719aee50) · Commits · e / devices / android_kernel_fairphone_FP5

drivers/scsi/ufs/ufs-qcom.c

+74 −0

Original line number	Diff line number	Diff line
		@@ -1724,6 +1724,8 @@ 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;
		}

		@@ -2561,6 +2563,8 @@ 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;
		}
		@@ -2997,9 +3001,79 @@ 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
		@@ -338,6 +338,9 @@ 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