diff options
| author | Badhri Jagan Sridharan <badhri@google.com> | 2014-10-25 23:34:12 -0700 |
|---|---|---|
| committer | Badhri Jagan Sridharan <badhri@google.com> | 2014-10-27 11:01:50 -0700 |
| commit | 07fc5e68183d42ce7f1ba7b4f9a870183bc28383 (patch) | |
| tree | fa6cc8b7b918309264cfb86496e5a55c1addf198 | |
| parent | f270c21d420aeb61838c1be96756e2e169d4c329 (diff) | |
| download | tegra-07fc5e68183d42ce7f1ba7b4f9a870183bc28383.tar.gz | |
usb: gadget: tegra_udc: power on/off phy during suspendandroid-5.0.0_r0.3
phy seems to be left in a inconsistent state if device
suspends while connected to DCP. Turn off phy and turn
it back on when system resumes
Bug: 17888454
Change-Id: I04d404c26b791522b21551074b04e42c97816dcd
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
| -rw-r--r-- | drivers/usb/gadget/tegra_udc.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/usb/gadget/tegra_udc.c b/drivers/usb/gadget/tegra_udc.c index 6f91a8f2324d..48a9587eea2d 100644 --- a/drivers/usb/gadget/tegra_udc.c +++ b/drivers/usb/gadget/tegra_udc.c @@ -3160,8 +3160,11 @@ static int tegra_udc_suspend(struct platform_device *pdev, pm_message_t state) udc->connect_type_lp0 = udc->connect_type; /* If the controller is in otg mode, return */ - if (udc->transceiver) + if (udc->transceiver) { + if (udc->vbus_active) + tegra_usb_phy_power_off(udc->phy); return 0; + } if (udc->irq) { err = enable_irq_wake(udc->irq); @@ -3220,8 +3223,11 @@ static int tegra_udc_resume(struct platform_device *pdev) } } - if (udc->transceiver) + if (udc->transceiver) { + if (udc->vbus_active) + tegra_usb_phy_power_on(udc->phy); return 0; + } if (udc->irq) { err = disable_irq_wake(udc->irq); |