diff options
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index ac72a6daf50..908db3eb060 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -210,6 +210,7 @@ struct ufs_dev_cmd { * @name: clock name * @max_freq: maximum frequency supported by the clock * @min_freq: min frequency that can be used for clock scaling + * @curr_freq: indicates the current frequency that it is set to * @enabled: variable to check against multiple enable/disable */ struct ufs_clk_info { @@ -218,6 +219,7 @@ struct ufs_clk_info { const char *name; u32 max_freq; u32 min_freq; + u32 curr_freq; bool enabled; }; @@ -244,6 +246,7 @@ struct ufs_pwr_mode_info { * @name: variant name * @init: called when the driver is initialized * @exit: called to cleanup everything done in init + * @clk_scale_notify: notifies that clks are scaled up/down * @setup_clocks: called before touching any of the controller registers * @setup_regulators: called before accessing the host controller * @hce_enable_notify: called before and after HCE enable bit is set to allow @@ -260,6 +263,7 @@ struct ufs_hba_variant_ops { const char *name; int (*init)(struct ufs_hba *); void (*exit)(struct ufs_hba *); + void (*clk_scale_notify)(struct ufs_hba *); int (*setup_clocks)(struct ufs_hba *, bool); int (*setup_regulators)(struct ufs_hba *, bool); int (*hce_enable_notify)(struct ufs_hba *, bool); @@ -303,6 +307,13 @@ struct ufs_clk_gating { int active_reqs; }; +struct ufs_clk_scaling { + ktime_t busy_start_t; + bool is_busy_started; + unsigned long tot_busy_t; + unsigned long window_start_t; +}; + /** * struct ufs_init_prefetch - contains data that is pre-fetched once during * initialization @@ -456,6 +467,11 @@ struct ufs_hba { #define UFSHCD_CAP_CLK_GATING (1 << 0) /* Allow hiberb8 with clk gating */ #define UFSHCD_CAP_HIBERN8_WITH_CLK_GATING (1 << 1) + /* Allow dynamic clk scaling */ +#define UFSHCD_CAP_CLK_SCALING (1 << 2) + + struct devfreq *devfreq; + struct ufs_clk_scaling clk_scaling; }; /* Returns true if clocks can be gated. Otherwise false */ @@ -467,6 +483,10 @@ static inline bool ufshcd_can_hibern8_during_gating(struct ufs_hba *hba) { return hba->caps & UFSHCD_CAP_HIBERN8_WITH_CLK_GATING; } +static inline int ufshcd_is_clkscaling_enabled(struct ufs_hba *hba) +{ + return hba->caps & UFSHCD_CAP_CLK_SCALING; +} #define ufshcd_writel(hba, val, reg) \ writel((val), (hba)->mmio_base + (reg)) #define ufshcd_readl(hba, reg) \ |