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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>
This commit is contained in:
Xu Yang 2022-10-13 23:14:37 +08:00 committed by Greg Kroah-Hartman
parent 450857c605
commit 2f64d6a6cd
1 changed files with 16 additions and 0 deletions
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16
drivers/usb/chipidea/host.c
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@ -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;