On 22-10-13 23:14:36, Xu Yang wrote:
> There may be a need to handle suspend/resume per role. This patch
> will add this support.
>
> Signed-off-by: Xu Yang <xu.yang_2@xxxxxxx>
>
Acked-by: Peter Chen <peter.chen@xxxxxxxxxx>
Peter
> ---
> Changes since v1:
> - No changes.
> ---
> drivers/usb/chipidea/ci.h | 4 ++++
> drivers/usb/chipidea/core.c | 8 ++++++++
> 2 files changed, 12 insertions(+)
>
> diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h
> index a4a3be049910..005c67cb3afb 100644
> --- a/drivers/usb/chipidea/ci.h
> +++ b/drivers/usb/chipidea/ci.h
> @@ -127,12 +127,16 @@ enum ci_revision {
> * struct ci_role_driver - host/gadget role driver
> * @start: start this role
> * @stop: stop this role
> + * @suspend: system suspend handler for this role
> + * @resume: system resume handler for this role
> * @irq: irq handler for this role
> * @name: role name string (host/gadget)
> */
> struct ci_role_driver {
> int (*start)(struct ci_hdrc *);
> void (*stop)(struct ci_hdrc *);
> + void (*suspend)(struct ci_hdrc *ci);
> + void (*resume)(struct ci_hdrc *ci, bool power_lost);
> irqreturn_t (*irq)(struct ci_hdrc *);
> const char *name;
> };
> diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
> index 80267b973c26..2b170b434d01 100644
> --- a/drivers/usb/chipidea/core.c
> +++ b/drivers/usb/chipidea/core.c
> @@ -1383,6 +1383,10 @@ static int ci_suspend(struct device *dev)
> return 0;
> }
>
> + /* Extra routine per role before system suspend */
> + if (ci->role != CI_ROLE_END && ci_role(ci)->suspend)
> + ci_role(ci)->suspend(ci);
> +
> if (device_may_wakeup(dev)) {
> if (ci_otg_is_fsm_mode(ci))
> ci_otg_fsm_suspend_for_srp(ci);
> @@ -1422,6 +1426,10 @@ static int ci_resume(struct device *dev)
> ci_usb_phy_init(ci);
> }
>
> + /* Extra routine per role after system resume */
> + if (ci->role != CI_ROLE_END && ci_role(ci)->resume)
> + ci_role(ci)->resume(ci, power_lost);
> +
> if (power_lost)
> ci_handle_power_lost(ci);
>
> --
> 2.34.1
>
--
Thanks,
Peter Chen
