static int ufshcd_wb_ctrl(struct ufs_hba *hba, bool enable);
static int ufshcd_wb_toggle_flush_during_h8(struct ufs_hba *hba, bool set);
static inline void ufshcd_wb_toggle_flush(struct ufs_hba *hba, bool enable);
+static void ufshcd_hba_vreg_set_lpm(struct ufs_hba *hba);
+static void ufshcd_hba_vreg_set_hpm(struct ufs_hba *hba);
static inline bool ufshcd_valid_tag(struct ufs_hba *hba, int tag)
{
}
spin_unlock_irqrestore(hba->host->host_lock, flags);
+ ufshcd_hba_vreg_set_hpm(hba);
ufshcd_setup_clocks(hba, true);
ufshcd_enable_irq(hba);
/* If link is active, device ref_clk can't be switched off */
__ufshcd_setup_clocks(hba, false, true);
+ /* Put the host controller in low power mode if possible */
+ ufshcd_hba_vreg_set_lpm(hba);
/*
* In case you are here to cancel this work the gating state
* would be marked as REQ_CLKS_ON. In this case keep the state
static void ufshcd_hba_vreg_set_lpm(struct ufs_hba *hba)
{
- if (ufshcd_is_link_off(hba))
+ if (ufshcd_is_link_off(hba) || ufshcd_can_aggressive_pc(hba))
ufshcd_setup_hba_vreg(hba, false);
}
static void ufshcd_hba_vreg_set_hpm(struct ufs_hba *hba)
{
- if (ufshcd_is_link_off(hba))
+ if (ufshcd_is_link_off(hba) || ufshcd_can_aggressive_pc(hba))
ufshcd_setup_hba_vreg(hba, true);
}
* inline crypto engine, if it is present
*/
UFSHCD_CAP_CRYPTO = 1 << 8,
+
+ /*
+ * This capability allows the controller regulators to be put into
+ * lpm mode aggressively during clock gating.
+ * This would increase power savings.
+ */
+ UFSHCD_CAP_AGGR_POWER_COLLAPSE = 1 << 9,
};
struct ufs_hba_variant_params {
#endif
}
+static inline bool ufshcd_can_aggressive_pc(struct ufs_hba *hba)
+{
+ return !!(ufshcd_is_link_hibern8(hba) &&
+ (hba->caps & UFSHCD_CAP_AGGR_POWER_COLLAPSE));
+}
+
static inline bool ufshcd_is_auto_hibern8_supported(struct ufs_hba *hba)
{
return (hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT) &&