diff options
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 4da2bbd617e8..7630600217a2 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -357,14 +357,37 @@ struct ufs_saved_pwr_info { bool is_valid; }; +/** + * struct ufs_clk_scaling - UFS clock scaling related data + * @active_reqs: number of requests that are pending. If this is zero when + * devfreq ->target() function is called then schedule "suspend_work" to + * suspend devfreq. + * @tot_busy_t: Total busy time in current polling window + * @window_start_t: Start time (in jiffies) of the current polling window + * @busy_start_t: Start time of current busy period + * @enable_attr: sysfs attribute to enable/disable clock scaling + * @saved_pwr_info: UFS power mode may also be changed during scaling and this + * one keeps track of previous power mode. + * @workq: workqueue to schedule devfreq suspend/resume work + * @suspend_work: worker to suspend devfreq + * @resume_work: worker to resume devfreq + * @is_allowed: tracks if scaling is currently allowed or not + * @is_busy_started: tracks if busy period has started or not + * @is_suspended: tracks if devfreq is suspended or not + */ struct ufs_clk_scaling { - ktime_t busy_start_t; - bool is_busy_started; - unsigned long tot_busy_t; + int active_reqs; + unsigned long tot_busy_t; unsigned long window_start_t; + ktime_t busy_start_t; struct device_attribute enable_attr; - bool is_allowed; struct ufs_saved_pwr_info saved_pwr_info; + struct workqueue_struct *workq; + struct work_struct suspend_work; + struct work_struct resume_work; + bool is_allowed; + bool is_busy_started; + bool is_suspended; }; /** |