[PATCH v3 02/18] scsi: ufs: Reduce power management code duplication

[Bart Van Assche <bvanassche@acm.org>]

Move the dev_get_drvdata() calls into the ufshcd_{system,runtime}_*()
functions. Remove ufshcd_runtime_idle() since it is empty. This patch
does not change any functionality.

Reviewed-by: Avri Altman <avri.altman@wdc.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Stanley Chu <stanley.chu@mediatek.com>
Cc: Can Guo <cang@codeaurora.org>
Cc: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
---
 drivers/scsi/ufs/cdns-pltfrm.c        |  7 ++--
 drivers/scsi/ufs/tc-dwc-g210-pci.c    | 32 ++----------------
 drivers/scsi/ufs/tc-dwc-g210-pltfrm.c |  7 ++--
 drivers/scsi/ufs/ufs-exynos.c         |  7 ++--
 drivers/scsi/ufs/ufs-hisi.c           |  7 ++--
 drivers/scsi/ufs/ufs-mediatek.c       |  7 ++--
 drivers/scsi/ufs/ufs-qcom.c           |  7 ++--
 drivers/scsi/ufs/ufshcd-pci.c         | 48 ++-------------------------
 drivers/scsi/ufs/ufshcd-pltfrm.c      | 47 --------------------------
 drivers/scsi/ufs/ufshcd-pltfrm.h      | 18 ----------
 drivers/scsi/ufs/ufshcd.c             | 41 ++++++++++++-----------
 drivers/scsi/ufs/ufshcd.h             |  9 +++--
 12 files changed, 41 insertions(+), 196 deletions(-)

diff --git a/drivers/scsi/ufs/cdns-pltfrm.c b/drivers/scsi/ufs/cdns-pltfrm.c
index 908ff39c4856..7da8be2f35c4 100644
--- a/drivers/scsi/ufs/cdns-pltfrm.c
+++ b/drivers/scsi/ufs/cdns-pltfrm.c
@@ -318,11 +318,8 @@ static int cdns_ufs_pltfrm_remove(struct platform_device *pdev)
 }
 
 static const struct dev_pm_ops cdns_ufs_dev_pm_ops = {
-	.suspend         = ufshcd_pltfrm_suspend,
-	.resume          = ufshcd_pltfrm_resume,
-	.runtime_suspend = ufshcd_pltfrm_runtime_suspend,
-	.runtime_resume  = ufshcd_pltfrm_runtime_resume,
-	.runtime_idle    = ufshcd_pltfrm_runtime_idle,
+	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
+	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
 	.prepare	 = ufshcd_suspend_prepare,
 	.complete	 = ufshcd_resume_complete,
 };
diff --git a/drivers/scsi/ufs/tc-dwc-g210-pci.c b/drivers/scsi/ufs/tc-dwc-g210-pci.c
index ec4589afbc13..679289e1a78e 100644
--- a/drivers/scsi/ufs/tc-dwc-g210-pci.c
+++ b/drivers/scsi/ufs/tc-dwc-g210-pci.c
@@ -23,31 +23,6 @@ static int tc_type = TC_G210_INV;
 module_param(tc_type, int, 0);
 MODULE_PARM_DESC(tc_type, "Test Chip Type (20 = 20-bit, 40 = 40-bit)");
 
-static int tc_dwc_g210_pci_suspend(struct device *dev)
-{
-	return ufshcd_system_suspend(dev_get_drvdata(dev));
-}
-
-static int tc_dwc_g210_pci_resume(struct device *dev)
-{
-	return ufshcd_system_resume(dev_get_drvdata(dev));
-}
-
-static int tc_dwc_g210_pci_runtime_suspend(struct device *dev)
-{
-	return ufshcd_runtime_suspend(dev_get_drvdata(dev));
-}
-
-static int tc_dwc_g210_pci_runtime_resume(struct device *dev)
-{
-	return ufshcd_runtime_resume(dev_get_drvdata(dev));
-}
-
-static int tc_dwc_g210_pci_runtime_idle(struct device *dev)
-{
-	return ufshcd_runtime_idle(dev_get_drvdata(dev));
-}
-
 /*
  * struct ufs_hba_dwc_vops - UFS DWC specific variant operations
  */
@@ -143,11 +118,8 @@ tc_dwc_g210_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 }
 
 static const struct dev_pm_ops tc_dwc_g210_pci_pm_ops = {
-	.suspend	= tc_dwc_g210_pci_suspend,
-	.resume		= tc_dwc_g210_pci_resume,
-	.runtime_suspend = tc_dwc_g210_pci_runtime_suspend,
-	.runtime_resume  = tc_dwc_g210_pci_runtime_resume,
-	.runtime_idle    = tc_dwc_g210_pci_runtime_idle,
+	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
+	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
 	.prepare	 = ufshcd_suspend_prepare,
 	.complete	 = ufshcd_resume_complete,
 };
diff --git a/drivers/scsi/ufs/tc-dwc-g210-pltfrm.c b/drivers/scsi/ufs/tc-dwc-g210-pltfrm.c
index a1268e4f44d6..783ec43efa78 100644
--- a/drivers/scsi/ufs/tc-dwc-g210-pltfrm.c
+++ b/drivers/scsi/ufs/tc-dwc-g210-pltfrm.c
@@ -84,11 +84,8 @@ static int tc_dwc_g210_pltfm_remove(struct platform_device *pdev)
 }
 
 static const struct dev_pm_ops tc_dwc_g210_pltfm_pm_ops = {
-	.suspend	= ufshcd_pltfrm_suspend,
-	.resume		= ufshcd_pltfrm_resume,
-	.runtime_suspend = ufshcd_pltfrm_runtime_suspend,
-	.runtime_resume  = ufshcd_pltfrm_runtime_resume,
-	.runtime_idle    = ufshcd_pltfrm_runtime_idle,
+	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
+	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
 };
 
 static struct platform_driver tc_dwc_g210_pltfm_driver = {
diff --git a/drivers/scsi/ufs/ufs-exynos.c b/drivers/scsi/ufs/ufs-exynos.c
index cf46d6f86e0e..5aa096e5b6cc 100644
--- a/drivers/scsi/ufs/ufs-exynos.c
+++ b/drivers/scsi/ufs/ufs-exynos.c
@@ -1287,11 +1287,8 @@ static const struct of_device_id exynos_ufs_of_match[] = {
 };
 
 static const struct dev_pm_ops exynos_ufs_pm_ops = {
-	.suspend	= ufshcd_pltfrm_suspend,
-	.resume		= ufshcd_pltfrm_resume,
-	.runtime_suspend = ufshcd_pltfrm_runtime_suspend,
-	.runtime_resume  = ufshcd_pltfrm_runtime_resume,
-	.runtime_idle    = ufshcd_pltfrm_runtime_idle,
+	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
+	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
 	.prepare	 = ufshcd_suspend_prepare,
 	.complete	 = ufshcd_resume_complete,
 };
diff --git a/drivers/scsi/ufs/ufs-hisi.c b/drivers/scsi/ufs/ufs-hisi.c
index 5b147a48161b..6b706de8354b 100644
--- a/drivers/scsi/ufs/ufs-hisi.c
+++ b/drivers/scsi/ufs/ufs-hisi.c
@@ -572,11 +572,8 @@ static int ufs_hisi_remove(struct platform_device *pdev)
 }
 
 static const struct dev_pm_ops ufs_hisi_pm_ops = {
-	.suspend	= ufshcd_pltfrm_suspend,
-	.resume		= ufshcd_pltfrm_resume,
-	.runtime_suspend = ufshcd_pltfrm_runtime_suspend,
-	.runtime_resume  = ufshcd_pltfrm_runtime_resume,
-	.runtime_idle    = ufshcd_pltfrm_runtime_idle,
+	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
+	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
 	.prepare	 = ufshcd_suspend_prepare,
 	.complete	 = ufshcd_resume_complete,
 };
diff --git a/drivers/scsi/ufs/ufs-mediatek.c b/drivers/scsi/ufs/ufs-mediatek.c
index d2c251628a05..80b3545dd17d 100644
--- a/drivers/scsi/ufs/ufs-mediatek.c
+++ b/drivers/scsi/ufs/ufs-mediatek.c
@@ -1140,11 +1140,8 @@ static int ufs_mtk_remove(struct platform_device *pdev)
 }
 
 static const struct dev_pm_ops ufs_mtk_pm_ops = {
-	.suspend         = ufshcd_pltfrm_suspend,
-	.resume          = ufshcd_pltfrm_resume,
-	.runtime_suspend = ufshcd_pltfrm_runtime_suspend,
-	.runtime_resume  = ufshcd_pltfrm_runtime_resume,
-	.runtime_idle    = ufshcd_pltfrm_runtime_idle,
+	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
+	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
 	.prepare	 = ufshcd_suspend_prepare,
 	.complete	 = ufshcd_resume_complete,
 };
diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
index 9b1d18d7c9bb..9d9770f1db4f 100644
--- a/drivers/scsi/ufs/ufs-qcom.c
+++ b/drivers/scsi/ufs/ufs-qcom.c
@@ -1546,11 +1546,8 @@ MODULE_DEVICE_TABLE(acpi, ufs_qcom_acpi_match);
 #endif
 
 static const struct dev_pm_ops ufs_qcom_pm_ops = {
-	.suspend	= ufshcd_pltfrm_suspend,
-	.resume		= ufshcd_pltfrm_resume,
-	.runtime_suspend = ufshcd_pltfrm_runtime_suspend,
-	.runtime_resume  = ufshcd_pltfrm_runtime_resume,
-	.runtime_idle    = ufshcd_pltfrm_runtime_idle,
+	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
+	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
 	.prepare	 = ufshcd_suspend_prepare,
 	.complete	 = ufshcd_resume_complete,
 };
diff --git a/drivers/scsi/ufs/ufshcd-pci.c b/drivers/scsi/ufs/ufshcd-pci.c
index e6c334bfb4c2..b3bcc5c882da 100644
--- a/drivers/scsi/ufs/ufshcd-pci.c
+++ b/drivers/scsi/ufs/ufshcd-pci.c
@@ -385,48 +385,6 @@ static struct ufs_hba_variant_ops ufs_intel_lkf_hba_vops = {
 	.device_reset		= ufs_intel_device_reset,
 };
 
-#ifdef CONFIG_PM_SLEEP
-/**
- * ufshcd_pci_suspend - suspend power management function
- * @dev: pointer to PCI device handle
- *
- * Returns 0 if successful
- * Returns non-zero otherwise
- */
-static int ufshcd_pci_suspend(struct device *dev)
-{
-	return ufshcd_system_suspend(dev_get_drvdata(dev));
-}
-
-/**
- * ufshcd_pci_resume - resume power management function
- * @dev: pointer to PCI device handle
- *
- * Returns 0 if successful
- * Returns non-zero otherwise
- */
-static int ufshcd_pci_resume(struct device *dev)
-{
-	return ufshcd_system_resume(dev_get_drvdata(dev));
-}
-
-#endif /* !CONFIG_PM_SLEEP */
-
-#ifdef CONFIG_PM
-static int ufshcd_pci_runtime_suspend(struct device *dev)
-{
-	return ufshcd_runtime_suspend(dev_get_drvdata(dev));
-}
-static int ufshcd_pci_runtime_resume(struct device *dev)
-{
-	return ufshcd_runtime_resume(dev_get_drvdata(dev));
-}
-static int ufshcd_pci_runtime_idle(struct device *dev)
-{
-	return ufshcd_runtime_idle(dev_get_drvdata(dev));
-}
-#endif /* !CONFIG_PM */
-
 /**
  * ufshcd_pci_shutdown - main function to put the controller in reset state
  * @pdev: pointer to PCI device handle
@@ -510,10 +468,8 @@ ufshcd_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 }
 
 static const struct dev_pm_ops ufshcd_pci_pm_ops = {
-	SET_RUNTIME_PM_OPS(ufshcd_pci_runtime_suspend,
-			   ufshcd_pci_runtime_resume,
-			   ufshcd_pci_runtime_idle)
-	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_pci_suspend, ufshcd_pci_resume)
+	SET_SYSTEM_SLEEP_PM_OPS(ufshcd_system_suspend, ufshcd_system_resume)
+	SET_RUNTIME_PM_OPS(ufshcd_runtime_suspend, ufshcd_runtime_resume, NULL)
 #ifdef CONFIG_PM_SLEEP
 	.prepare	= ufshcd_suspend_prepare,
 	.complete	= ufshcd_resume_complete,
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.c b/drivers/scsi/ufs/ufshcd-pltfrm.c
index 298e22ef907e..8859c13f4e09 100644
--- a/drivers/scsi/ufs/ufshcd-pltfrm.c
+++ b/drivers/scsi/ufs/ufshcd-pltfrm.c
@@ -170,53 +170,6 @@ static int ufshcd_parse_regulator_info(struct ufs_hba *hba)
 	return err;
 }
 
-#ifdef CONFIG_PM
-/**
- * ufshcd_pltfrm_suspend - suspend power management function
- * @dev: pointer to device handle
- *
- * Returns 0 if successful
- * Returns non-zero otherwise
- */
-int ufshcd_pltfrm_suspend(struct device *dev)
-{
-	return ufshcd_system_suspend(dev_get_drvdata(dev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_suspend);
-
-/**
- * ufshcd_pltfrm_resume - resume power management function
- * @dev: pointer to device handle
- *
- * Returns 0 if successful
- * Returns non-zero otherwise
- */
-int ufshcd_pltfrm_resume(struct device *dev)
-{
-	return ufshcd_system_resume(dev_get_drvdata(dev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_resume);
-
-int ufshcd_pltfrm_runtime_suspend(struct device *dev)
-{
-	return ufshcd_runtime_suspend(dev_get_drvdata(dev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_runtime_suspend);
-
-int ufshcd_pltfrm_runtime_resume(struct device *dev)
-{
-	return ufshcd_runtime_resume(dev_get_drvdata(dev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_runtime_resume);
-
-int ufshcd_pltfrm_runtime_idle(struct device *dev)
-{
-	return ufshcd_runtime_idle(dev_get_drvdata(dev));
-}
-EXPORT_SYMBOL_GPL(ufshcd_pltfrm_runtime_idle);
-
-#endif /* CONFIG_PM */
-
 void ufshcd_pltfrm_shutdown(struct platform_device *pdev)
 {
 	ufshcd_shutdown((struct ufs_hba *)platform_get_drvdata(pdev));
diff --git a/drivers/scsi/ufs/ufshcd-pltfrm.h b/drivers/scsi/ufs/ufshcd-pltfrm.h
index 772a8e848098..c33e28ac6ef6 100644
--- a/drivers/scsi/ufs/ufshcd-pltfrm.h
+++ b/drivers/scsi/ufs/ufshcd-pltfrm.h
@@ -33,22 +33,4 @@ int ufshcd_pltfrm_init(struct platform_device *pdev,
 		       const struct ufs_hba_variant_ops *vops);
 void ufshcd_pltfrm_shutdown(struct platform_device *pdev);
 
-#ifdef CONFIG_PM
-
-int ufshcd_pltfrm_suspend(struct device *dev);
-int ufshcd_pltfrm_resume(struct device *dev);
-int ufshcd_pltfrm_runtime_suspend(struct device *dev);
-int ufshcd_pltfrm_runtime_resume(struct device *dev);
-int ufshcd_pltfrm_runtime_idle(struct device *dev);
-
-#else /* !CONFIG_PM */
-
-#define ufshcd_pltfrm_suspend	NULL
-#define ufshcd_pltfrm_resume	NULL
-#define ufshcd_pltfrm_runtime_suspend	NULL
-#define ufshcd_pltfrm_runtime_resume	NULL
-#define ufshcd_pltfrm_runtime_idle	NULL
-
-#endif /* CONFIG_PM */
-
 #endif /* UFSHCD_PLTFRM_H_ */
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index 6c251afe65f9..58b1742ec9b9 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -9208,15 +9208,17 @@ static int ufshcd_resume(struct ufs_hba *hba)
 }
 
 /**
- * ufshcd_system_suspend - system suspend routine
- * @hba: per adapter instance
+ * ufshcd_system_suspend - system suspend callback
+ * @dev: Device associated with the UFS controller.
  *
- * Check the description of ufshcd_suspend() function for more details.
+ * Executed before putting the system into a sleep state in which the contents
+ * of main memory are preserved.
  *
  * Returns 0 for success and non-zero for failure
  */
-int ufshcd_system_suspend(struct ufs_hba *hba)
+int ufshcd_system_suspend(struct device *dev)
 {
+	struct ufs_hba *hba = dev_get_drvdata(dev);
 	int ret = 0;
 	ktime_t start = ktime_get();
 
@@ -9233,16 +9235,19 @@ int ufshcd_system_suspend(struct ufs_hba *hba)
 EXPORT_SYMBOL(ufshcd_system_suspend);
 
 /**
- * ufshcd_system_resume - system resume routine
- * @hba: per adapter instance
+ * ufshcd_system_resume - system resume callback
+ * @dev: Device associated with the UFS controller.
+ *
+ * Executed after waking the system up from a sleep state in which the contents
+ * of main memory were preserved.
  *
  * Returns 0 for success and non-zero for failure
  */
-
-int ufshcd_system_resume(struct ufs_hba *hba)
+int ufshcd_system_resume(struct device *dev)
 {
-	int ret = 0;
+	struct ufs_hba *hba = dev_get_drvdata(dev);
 	ktime_t start = ktime_get();
+	int ret = 0;
 
 	if (pm_runtime_suspended(hba->dev))
 		goto out;
@@ -9259,15 +9264,16 @@ int ufshcd_system_resume(struct ufs_hba *hba)
 EXPORT_SYMBOL(ufshcd_system_resume);
 
 /**
- * ufshcd_runtime_suspend - runtime suspend routine
- * @hba: per adapter instance
+ * ufshcd_runtime_suspend - runtime suspend callback
+ * @dev: Device associated with the UFS controller.
  *
  * Check the description of ufshcd_suspend() function for more details.
  *
  * Returns 0 for success and non-zero for failure
  */
-int ufshcd_runtime_suspend(struct ufs_hba *hba)
+int ufshcd_runtime_suspend(struct device *dev)
 {
+	struct ufs_hba *hba = dev_get_drvdata(dev);
 	int ret;
 	ktime_t start = ktime_get();
 
@@ -9282,7 +9288,7 @@ EXPORT_SYMBOL(ufshcd_runtime_suspend);
 
 /**
  * ufshcd_runtime_resume - runtime resume routine
- * @hba: per adapter instance
+ * @dev: Device associated with the UFS controller.
  *
  * This function basically brings controller
  * to active state. Following operations are done in this function:
@@ -9290,8 +9296,9 @@ EXPORT_SYMBOL(ufshcd_runtime_suspend);
  * 1. Turn on all the controller related clocks
  * 2. Turn ON VCC rail
  */
-int ufshcd_runtime_resume(struct ufs_hba *hba)
+int ufshcd_runtime_resume(struct device *dev)
 {
+	struct ufs_hba *hba = dev_get_drvdata(dev);
 	int ret;
 	ktime_t start = ktime_get();
 
@@ -9304,12 +9311,6 @@ int ufshcd_runtime_resume(struct ufs_hba *hba)
 }
 EXPORT_SYMBOL(ufshcd_runtime_resume);
 
-int ufshcd_runtime_idle(struct ufs_hba *hba)
-{
-	return 0;
-}
-EXPORT_SYMBOL(ufshcd_runtime_idle);
-
 /**
  * ufshcd_shutdown - shutdown routine
  * @hba: per adapter instance
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 971cfabc4a1e..cc971aebb9da 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -1001,11 +1001,10 @@ static inline u8 ufshcd_wb_get_query_index(struct ufs_hba *hba)
 	return 0;
 }
 
-extern int ufshcd_runtime_suspend(struct ufs_hba *hba);
-extern int ufshcd_runtime_resume(struct ufs_hba *hba);
-extern int ufshcd_runtime_idle(struct ufs_hba *hba);
-extern int ufshcd_system_suspend(struct ufs_hba *hba);
-extern int ufshcd_system_resume(struct ufs_hba *hba);
+extern int ufshcd_runtime_suspend(struct device *dev);
+extern int ufshcd_runtime_resume(struct device *dev);
+extern int ufshcd_system_suspend(struct device *dev);
+extern int ufshcd_system_resume(struct device *dev);
 extern int ufshcd_shutdown(struct ufs_hba *hba);
 extern int ufshcd_dme_configure_adapt(struct ufs_hba *hba,
 				      int agreed_gear,