diff options
| author | Li Jun <b47624@freescale.com> | 2015-01-20 16:03:38 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@freescale.com> | 2015-01-26 13:18:06 +0800 |
| commit | 4b54bd6b46f586832e908a6152e395b7809b083a (patch) | |
| tree | 5c22778c2a8dfdc2fac10c40ea545f3684f79fc2 | |
| parent | 40ab0b2bd830d5b96b8a4a205fb8210eecf35354 (diff) | |
MLK-10086-3 usb: phy-nop: add the implementation of .set_suspend
Add clock enable/disable 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@freescale.com>
| -rw-r--r-- | drivers/usb/phy/phy-generic.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/usb/phy/phy-generic.c b/drivers/usb/phy/phy-generic.c index 67572cc0dd3e..f0e458b1d9bc 100644 --- a/drivers/usb/phy/phy-generic.c +++ b/drivers/usb/phy/phy-generic.c @@ -65,6 +65,16 @@ EXPORT_SYMBOL(usb_nop_xceiv_unregister); static int nop_set_suspend(struct usb_phy *x, int suspend) { + struct usb_phy_gen_xceiv *nop = dev_get_drvdata(x->dev); + + if (IS_ERR(nop->clk)) + return 0; + + if (suspend) + clk_disable_unprepare(nop->clk); + else + clk_prepare_enable(nop->clk); + return 0; } |