diff options
Diffstat (limited to 'drivers/usb/mtu3/mtu3_core.c')
| -rw-r--r-- | drivers/usb/mtu3/mtu3_core.c | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index a800920d38b9..f90e5cdec614 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -9,7 +9,6 @@ */ #include <linux/dma-mapping.h> -#include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of_address.h> @@ -1008,12 +1007,25 @@ void ssusb_gadget_exit(struct ssusb_mtk *ssusb) mtu3_hw_exit(mtu); } +bool ssusb_gadget_ip_sleep_check(struct ssusb_mtk *ssusb) +{ + struct mtu3 *mtu = ssusb->u3d; + + /* host only, should wait for ip sleep */ + if (!mtu) + return true; + + /* device is started and pullup D+, ip can sleep */ + if (mtu->is_active && mtu->softconnect) + return true; + + /* ip can't sleep if not pullup D+ when support device mode */ + return false; +} + int ssusb_gadget_suspend(struct ssusb_mtk *ssusb, pm_message_t msg) { struct mtu3 *mtu = ssusb->u3d; - void __iomem *ibase = mtu->ippc_base; - u32 value; - int ret = 0; if (!mtu->gadget_driver) return 0; @@ -1024,17 +1036,7 @@ int ssusb_gadget_suspend(struct ssusb_mtk *ssusb, pm_message_t msg) mtu3_dev_suspend(mtu); synchronize_irq(mtu->irq); - /* wait for ip to sleep */ - if (mtu->is_active && mtu->softconnect) { - ret = readl_poll_timeout(ibase + U3D_SSUSB_IP_PW_STS1, - value, (value & SSUSB_IP_SLEEP_STS), 100, 100000); - if (ret) { - dev_err(mtu->dev, "ip sleep failed!!!\n"); - ret = -EBUSY; - } - } - - return ret; + return 0; } int ssusb_gadget_resume(struct ssusb_mtk *ssusb, pm_message_t msg) |