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Commit 6e9a4ebd authored by Subhash Jadavani's avatar Subhash Jadavani Committed by Sujit Reddy Thumma
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scsi: ufs: add power management support for pci driver 



ufshcd-pci driver is currently don't have runtime and system PM
callbacks implemented. This patch adds the support for the same which
would call the common ufshcd runtime/system PM callbacks.

Change-Id: I4aeaa41e681d0b6118eaa02054e6a44b5e7c303e
Signed-off-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
parent 3f4c1ace

drivers/scsi/ufs/ufshcd-pci.c

+9 −34
Original line number Diff line number Diff line
@@ -43,34 +43,24 @@ 
 * @pdev: pointer to PCI device handle

 * @state: power state

 *

 * Returns -ENOSYS

 * Returns 0 if successful

 * Returns non-zero otherwise

 */

static int ufshcd_pci_suspend(struct device *dev)

{

	/*

	 * TODO:

	 * 1. Call ufshcd_suspend

	 * 2. Do bus specific power management

	 */



	return -ENOSYS;

	return ufshcd_system_suspend(dev_get_drvdata(dev));

}



/**

 * ufshcd_pci_resume - resume power management function

 * @pdev: pointer to PCI device handle

 *

 * Returns -ENOSYS

 * Returns 0 if successful

 * Returns non-zero otherwise

 */

static int ufshcd_pci_resume(struct device *dev)

{

	/*

	 * TODO:

	 * 1. Call ufshcd_resume.

	 * 2. Do bus specific wake up

	 */



	return -ENOSYS;

	return ufshcd_system_resume(dev_get_drvdata(dev));

}

#else

#define ufshcd_pci_suspend	NULL
@@ -80,30 +70,15 @@ static int ufshcd_pci_resume(struct device *dev) 
#ifdef CONFIG_PM_RUNTIME

static int ufshcd_pci_runtime_suspend(struct device *dev)

{

	struct ufs_hba *hba = dev_get_drvdata(dev);



	if (!hba)

		return 0;



	return ufshcd_runtime_suspend(hba);

	return ufshcd_runtime_suspend(dev_get_drvdata(dev));

}

static int ufshcd_pci_runtime_resume(struct device *dev)

{

	struct ufs_hba *hba = dev_get_drvdata(dev);



	if (!hba)

		return 0;



	return ufshcd_runtime_resume(hba);

	return ufshcd_runtime_resume(dev_get_drvdata(dev));

}

static int ufshcd_pci_runtime_idle(struct device *dev)

{

	struct ufs_hba *hba = dev_get_drvdata(dev);



	if (!hba)

		return 0;



	return ufshcd_runtime_idle(hba);

	return ufshcd_runtime_idle(dev_get_drvdata(dev));

}

#else /* !CONFIG_PM_RUNTIME */

#define ufshcd_pci_runtime_suspend	NULL