diff options
| author |   Stanley Chu <stanley.chu@mediatek.com> | 2019-12-30 13:32:28 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2020-01-02 21:57:45 -0500 |
| commit | ba7af5ec5126dca17cdc8cfdb6740cdfb4bad70c (patch) | |
| tree | f7b352291dfeacce84464151210fa9d6fd5ccc80 /drivers | |
| parent | scsi: ufs-mediatek: introduce reference clock control (diff) | |
| download | linux-dev-ba7af5ec5126dca17cdc8cfdb6740cdfb4bad70c.tar.xz linux-dev-ba7af5ec5126dca17cdc8cfdb6740cdfb4bad70c.zip | |
scsi: ufs: export ufshcd_auto_hibern8_update for vendor usage
Export ufshcd_auto_hibern8_update to allow vendors to use common interface
to customize auto-hibernate timer.
Cc: Alim Akhtar <alim.akhtar@samsung.com>
Cc: Avri Altman <avri.altman@wdc.com>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: Bean Huo <beanhuo@micron.com>
Cc: Can Guo <cang@codeaurora.org>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Link: https://lore.kernel.org/r/1577683950-1702-5-git-send-email-stanley.chu@mediatek.com
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/ufs/ufs-sysfs.c | 20 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.c | 18 | ||||
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 1 |
3 files changed, 19 insertions, 20 deletions
diff --git a/drivers/scsi/ufs/ufs-sysfs.c b/drivers/scsi/ufs/ufs-sysfs.c index ad2abc96c0f1..720be3f64be7 100644 --- a/drivers/scsi/ufs/ufs-sysfs.c +++ b/drivers/scsi/ufs/ufs-sysfs.c @@ -118,26 +118,6 @@ static ssize_t spm_target_link_state_show(struct device *dev, ufs_pm_lvl_states[hba->spm_lvl].link_state)); } -static void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit) -{ - unsigned long flags; - - if (!ufshcd_is_auto_hibern8_supported(hba)) - return; - - spin_lock_irqsave(hba->host->host_lock, flags); - if (hba->ahit != ahit) - hba->ahit = ahit; - spin_unlock_irqrestore(hba->host->host_lock, flags); - if (!pm_runtime_suspended(hba->dev)) { - pm_runtime_get_sync(hba->dev); - ufshcd_hold(hba, false); - ufshcd_auto_hibern8_enable(hba); - ufshcd_release(hba); - pm_runtime_put(hba->dev); - } -} - /* Convert Auto-Hibernate Idle Timer register value to microseconds */ static int ufshcd_ahit_to_us(u32 ahit) { diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index b01c58ff8e8f..1b97f2dc0b63 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -3892,6 +3892,24 @@ static int ufshcd_uic_hibern8_exit(struct ufs_hba *hba) return ret; } +void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit) +{ + unsigned long flags; + + if (!(hba->capabilities & MASK_AUTO_HIBERN8_SUPPORT)) + return; + + spin_lock_irqsave(hba->host->host_lock, flags); + if (hba->ahit == ahit) + goto out_unlock; + hba->ahit = ahit; + if (!pm_runtime_suspended(hba->dev)) + ufshcd_writel(hba, hba->ahit, REG_AUTO_HIBERNATE_IDLE_TIMER); +out_unlock: + spin_unlock_irqrestore(hba->host->host_lock, flags); +} +EXPORT_SYMBOL_GPL(ufshcd_auto_hibern8_update); + void ufshcd_auto_hibern8_enable(struct ufs_hba *hba) { unsigned long flags; diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index b536a26d665e..e05cafddc87b 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -923,6 +923,7 @@ int ufshcd_query_flag(struct ufs_hba *hba, enum query_opcode opcode, enum flag_idn idn, bool *flag_res); void ufshcd_auto_hibern8_enable(struct ufs_hba *hba); +void ufshcd_auto_hibern8_update(struct ufs_hba *hba, u32 ahit); #define SD_ASCII_STD true #define SD_RAW false |