scsi: ufs: set default UFS power management level (0c8f7586) · Commits · 戴 / test

drivers/scsi/ufs/ufshcd.c

+28 −0

Original line number	Diff line number	Diff line
		@@ -191,6 +191,22 @@ ufs_get_pm_lvl_to_link_pwr_state(enum ufs_pm_level lvl)
		return ufs_pm_lvl_states[lvl].link_state;
		}

		static inline enum ufs_pm_level
		ufs_get_desired_pm_lvl_for_dev_link_state(enum ufs_dev_pwr_mode dev_state,
		enum uic_link_state link_state)
		{
		enum ufs_pm_level lvl;

		for (lvl = UFS_PM_LVL_0; lvl < UFS_PM_LVL_MAX; lvl++) {
		if ((ufs_pm_lvl_states[lvl].dev_state == dev_state) &&
		(ufs_pm_lvl_states[lvl].link_state == link_state))
		return lvl;
		}

		/* if no match found, return the level 0 */
		return UFS_PM_LVL_0;
		}

		static struct ufs_dev_fix ufs_fixups[] = {
		/* UFS cards deviations table */
		UFS_FIX(UFS_VENDOR_SAMSUNG, UFS_ANY_MODEL,
		@@ -7264,6 +7280,18 @@ int ufshcd_init(struct ufs_hba hba, void __iomem mmio_base, unsigned int irq)
		ufshcd_clkscaling_init_sysfs(hba);
		}

		/*
		* Set the default power management level for runtime and system PM.
		* Default power saving mode is to keep UFS link in Hibern8 state
		* and UFS device in sleep state.
		*/
		hba->rpm_lvl = ufs_get_desired_pm_lvl_for_dev_link_state(
		UFS_SLEEP_PWR_MODE,
		UIC_LINK_HIBERN8_STATE);
		hba->spm_lvl = ufs_get_desired_pm_lvl_for_dev_link_state(
		UFS_SLEEP_PWR_MODE,
		UIC_LINK_HIBERN8_STATE);

		/* Hold auto suspend until async scan completes */
		pm_runtime_get_sync(dev);