diff options
| author | Xu Yang <xu.yang_2@nxp.com> | 2022-10-13 23:14:37 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-23 14:34:53 +0200 |
| commit | 2f64d6a6cdfbd992e8a8c481ebf79bfa9a71325b (patch) | |
| tree | 210d11e9026b54c9fbadebf8af0b9c30ba18a92b /drivers/usb/chipidea | |
| parent | 450857c6058f092167f17bad97a2cc9c2a39b9a0 (diff) | |
| download | linux-stable-2f64d6a6cdfbd992e8a8c481ebf79bfa9a71325b.tar.gz linux-stable-2f64d6a6cdfbd992e8a8c481ebf79bfa9a71325b.tar.bz2 linux-stable-2f64d6a6cdfbd992e8a8c481ebf79bfa9a71325b.zip | |
usb: chipidea: host: add suspend/resume support for host controller
The controller's power may be powered off during system suspend. This
will add suspend/resume support when the controller suffers power lost.
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://lore.kernel.org/r/20221013151442.3262951-4-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea')
| -rw-r--r-- | drivers/usb/chipidea/host.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index bc3634a54c6b..ebe7400243b1 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -459,6 +459,18 @@ static void ci_hdrc_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) ci_hdrc_free_dma_aligned_buffer(urb); } +#ifdef CONFIG_PM_SLEEP +static void ci_hdrc_host_suspend(struct ci_hdrc *ci) +{ + ehci_suspend(ci->hcd, device_may_wakeup(ci->dev)); +} + +static void ci_hdrc_host_resume(struct ci_hdrc *ci, bool power_lost) +{ + ehci_resume(ci->hcd, power_lost); +} +#endif + int ci_hdrc_host_init(struct ci_hdrc *ci) { struct ci_role_driver *rdrv; @@ -472,6 +484,10 @@ int ci_hdrc_host_init(struct ci_hdrc *ci) rdrv->start = host_start; rdrv->stop = host_stop; +#ifdef CONFIG_PM_SLEEP + rdrv->suspend = ci_hdrc_host_suspend; + rdrv->resume = ci_hdrc_host_resume; +#endif rdrv->irq = host_irq; rdrv->name = "host"; ci->roles[CI_ROLE_HOST] = rdrv; |