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authorPeter Chen <peter.chen@nxp.com>2016-10-31 10:18:20 +0800
committerFelipe Balbi <felipe.balbi@linux.intel.com>2016-11-18 13:54:42 +0200
commita0fe0415e0b2a1d87b54db1a0451e05f59675f0c (patch)
tree666f5c7c2cec2595456ce256ef2069387e8deee4 /drivers/usb/phy
parenta22f884b266514e3657e65f2a63141f70d3644c0 (diff)
downloadlinux-a0fe0415e0b2a1d87b54db1a0451e05f59675f0c.tar.bz2
usb: phy: phy-generic: add the implementation of .set_suspend
Add clock operation at .set_suspend if the PHY has suspend requirement, it can be benefit of power saving for phy and the whole system (parent clock may also be disabled). Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/phy')
-rw-r--r--drivers/usb/phy/phy-generic.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c
index 8311ba2968cd..89d6e7a5fdb7 100644
--- a/drivers/usb/phy/phy-generic.c
+++ b/drivers/usb/phy/phy-generic.c
@@ -59,6 +59,15 @@ EXPORT_SYMBOL_GPL(usb_phy_generic_unregister);
static int nop_set_suspend(struct usb_phy *x, int suspend)
{
+ struct usb_phy_generic *nop = dev_get_drvdata(x->dev);
+
+ if (!IS_ERR(nop->clk)) {
+ if (suspend)
+ clk_disable_unprepare(nop->clk);
+ else
+ clk_prepare_enable(nop->clk);
+ }
+
return 0;
}