linux-kernel - [PATCH v2 01/10] usb: phy: Add APIs for runtime power management

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Date:	Sat, 02 Mar 2013 18:53:02 +0530
From:	Vivek Gautam <gautam.vivek@...sung.com>
To:	linux-usb@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, gregkh@...uxfoundation.org,
	balbi@...com, sarah.a.sharp@...ux.intel.com, kgene.kim@...sung.com,
	kishon@...com
Subject: [PATCH v2 01/10] usb: phy: Add APIs for runtime power management

Adding  APIs to handle runtime power management on PHY
devices. PHY consumers may need to wake-up/suspend PHYs
when they work across autosuspend.

Signed-off-by: Vivek Gautam <gautam.vivek@...sung.com>
---
 include/linux/usb/phy.h |   26 ++++++++++++++++++++++++++
 1 files changed, 26 insertions(+), 0 deletions(-)

diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
index 15847cb..0fe7cac 100644
--- a/include/linux/usb/phy.h
+++ b/include/linux/usb/phy.h
@@ -276,4 +276,30 @@ static inline const char *usb_phy_type_string(enum usb_phy_type type)
 		return "UNKNOWN PHY TYPE";
 	}
 }
+
+#define USB_PHY_AUTOPM(function)					    \
+static inline int usb_phy_autopm_##function(struct usb_phy *x)		    \
+{									    \
+	if (!x || !x->dev) {						    \
+		dev_err(x->dev, "no PHY or attached device available\n");   \
+		return -ENODEV;						    \
+	}								    \
+									    \
+	pm_runtime_##function(x->dev);					    \
+									    \
+	return 0;							    \
+}
+USB_PHY_AUTOPM(enable)
+USB_PHY_AUTOPM(disable)
+USB_PHY_AUTOPM(get)
+USB_PHY_AUTOPM(get_sync)
+USB_PHY_AUTOPM(put)
+USB_PHY_AUTOPM(put_sync)
+USB_PHY_AUTOPM(allow)
+USB_PHY_AUTOPM(forbid)
+USB_PHY_AUTOPM(suspend)
+USB_PHY_AUTOPM(autosuspend)
+USB_PHY_AUTOPM(resume)
+USB_PHY_AUTOPM(set_active)
+
 #endif /* __LINUX_USB_PHY_H */
-- 
1.7.6.5

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