diff options
| author | Frank Li <frank.li@nxp.com> | 2021-02-18 16:51:08 -0600 |
|---|---|---|
| committer | Peter Chen <peter.chen@kernel.org> | 2021-04-12 20:19:20 +0800 |
| commit | 2cf2581cd2290ccef674f1be5f7977d66702eedb (patch) | |
| tree | fa20b3bab591e194ba2eb4e372b03cf3145d6568 /drivers/usb/cdns3/cdns3-plat.c | |
| parent | 14d34d2dbbe2d9144a65bae1549202d1717062e2 (diff) | |
| download | linux-2cf2581cd2290ccef674f1be5f7977d66702eedb.tar.bz2 | |
usb: cdns3: add power lost support for system resume
If the controller lost its power during the system suspend, we need
to do all initialiation operations.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Frank Li <frank.li@nxp.com>
Signed-off-by: Peter Chen <peter.chen@kernel.org>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-plat.c')
| -rw-r--r-- | drivers/usb/cdns3/cdns3-plat.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/usb/cdns3/cdns3-plat.c b/drivers/usb/cdns3/cdns3-plat.c index 4b18e1c6a4bb..e1deeada425c 100644 --- a/drivers/usb/cdns3/cdns3-plat.c +++ b/drivers/usb/cdns3/cdns3-plat.c @@ -19,6 +19,7 @@ #include "core.h" #include "gadget-export.h" +#include "drd.h" static int set_phy_power_on(struct cdns *cdns) { @@ -236,6 +237,18 @@ static int cdns3_controller_resume(struct device *dev, pm_message_t msg) if (!cdns->in_lpm) return 0; + if (cdns_power_is_lost(cdns)) { + phy_exit(cdns->usb2_phy); + ret = phy_init(cdns->usb2_phy); + if (ret) + return ret; + + phy_exit(cdns->usb3_phy); + ret = phy_init(cdns->usb3_phy); + if (ret) + return ret; + } + ret = set_phy_power_on(cdns); if (ret) return ret; @@ -270,10 +283,18 @@ static int cdns3_plat_runtime_resume(struct device *dev) static int cdns3_plat_suspend(struct device *dev) { struct cdns *cdns = dev_get_drvdata(dev); + int ret; cdns_suspend(cdns); - return cdns3_controller_suspend(dev, PMSG_SUSPEND); + ret = cdns3_controller_suspend(dev, PMSG_SUSPEND); + if (ret) + return ret; + + if (device_may_wakeup(dev) && cdns->wakeup_irq) + enable_irq_wake(cdns->wakeup_irq); + + return ret; } static int cdns3_plat_resume(struct device *dev) |