From 4379ae3e6e25a1f3a2178032da296e305b3f11cd Mon Sep 17 00:00:00 2001 From: Stanley Chu Date: Mon, 30 Dec 2019 13:32:28 +0800 Subject: [PATCH] BACKPORT: 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. Bug: 149040610 Change-Id: Iaa95229f8741424aeaf691d12373a201aadb4446 (cherry picked from commit ba7af5ec5126dca17cdc8cfdb6740cdfb4bad70c) [ Resolved minor conflict in drivers/scsi/ufshcd.c ] Cc: Alim Akhtar Cc: Avri Altman Cc: Bart Van Assche Cc: Bean Huo Cc: Can Guo Cc: Florian Fainelli Cc: Matthias Brugger Link: https://lore.kernel.org/r/1577683950-1702-5-git-send-email-stanley.chu@mediatek.com Reviewed-by: Asutosh Das Reviewed-by: Alim Akhtar Signed-off-by: Stanley Chu Signed-off-by: Martin K. Petersen --- drivers/scsi/ufs/ufs-sysfs.c | 20 -------------------- drivers/scsi/ufs/ufshcd.c | 18 ++++++++++++++++++ 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 0ba0d105ee2f..8eb917a36a47 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -4047,6 +4047,24 @@ int ufshcd_uic_hibern8_exit(struct ufs_hba *hba) } EXPORT_SYMBOL_GPL(ufshcd_uic_hibern8_exit); +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 94311bb1dd2c..1e0c22ce43e4 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -976,6 +976,7 @@ 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