diff options
Diffstat (limited to 'drivers/scsi/ufs')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 3036f606545d..9c16e08c3742 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -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); |