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usb: chipidea: core: handle suspend/resume for each role

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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@nxp.com>
Acked-by: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20221013151442.3262951-3-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xu Yang 2022-10-13 23:14:36 +08:00 committed by Greg Kroah-Hartman
parent 74494b3321
commit 450857c605
2 changed files with 12 additions and 0 deletions
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4
drivers/usb/chipidea/ci.h
View file

@ -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;
};

8
drivers/usb/chipidea/core.c
View file

@ -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);