diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/scsi/ufs/ufshcd.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/scsi/ufs/ufshcd.h b/include/linux/scsi/ufs/ufshcd.h index 7109f59f9e80..a80130c959eb 100644 --- a/include/linux/scsi/ufs/ufshcd.h +++ b/include/linux/scsi/ufs/ufshcd.h @@ -343,6 +343,35 @@ struct ufs_clk_gating { int active_reqs; }; +/* Hibern8 state */ +enum ufshcd_hibern8_on_idle_state { + HIBERN8_ENTERED, + HIBERN8_EXITED, + REQ_HIBERN8_ENTER, + REQ_HIBERN8_EXIT, +}; + +/** + * struct ufs_hibern8_on_idle - UFS Hibern8 on idle related data + * @enter_work: worker to put UFS link in hibern8 after some delay as + * specified in delay_ms + * @exit_work: worker to bring UFS link out of hibern8 + * @state: the current hibern8 state + * @delay_ms: hibern8 enter delay in ms + * @is_suspended: hibern8 enter is suspended when set to 1 which can be used + * during suspend/resume + * @active_reqs: number of requests that are pending and should be waited for + * completion before scheduling delayed "enter_work". + */ +struct ufs_hibern8_on_idle { + struct delayed_work enter_work; + struct work_struct exit_work; + enum ufshcd_hibern8_on_idle_state state; + unsigned long delay_ms; + bool is_suspended; + int active_reqs; +}; + struct ufs_clk_scaling { ktime_t busy_start_t; bool is_busy_started; @@ -450,6 +479,7 @@ enum ts_types { * @clk_list_head: UFS host controller clocks list node head * @pwr_info: holds current power mode * @max_pwr_info: keeps the device max valid pwm + * @hibern8_on_idle: UFS Hibern8 on idle related data */ struct ufs_hba { void __iomem *mmio_base; @@ -591,6 +621,8 @@ struct ufs_hba { struct ufs_pwr_mode_info max_pwr_info; struct ufs_clk_gating clk_gating; + struct ufs_hibern8_on_idle hibern8_on_idle; + /* Control to enable/disable host capabilities */ u32 caps; /* Allow dynamic clk gating */ @@ -607,6 +639,8 @@ struct ufs_hba { * CAUTION: Enabling this might reduce overall UFS throughput. */ #define UFSHCD_CAP_INTR_AGGR (1 << 4) + /* Allow standalone Hibern8 enter on idle */ +#define UFSHCD_CAP_HIBERN8_ENTER_ON_IDLE (1 << 5) struct devfreq *devfreq; struct ufs_clk_scaling clk_scaling; @@ -630,6 +664,10 @@ static inline bool ufshcd_can_autobkops_during_suspend(struct ufs_hba *hba) { return hba->caps & UFSHCD_CAP_AUTO_BKOPS_SUSPEND; } +static inline bool ufshcd_is_hibern8_on_idle_allowed(struct ufs_hba *hba) +{ + return hba->caps & UFSHCD_CAP_HIBERN8_ENTER_ON_IDLE; +} static inline bool ufshcd_is_intr_aggr_allowed(struct ufs_hba *hba) { |