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| author | Xu Yang <xu.yang_2@nxp.com> | 2022-10-13 17:14:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-10-23 14:34:53 +0200 |
| commit | 450857c6058f092167f17bad97a2cc9c2a39b9a0 (patch) | |
| tree | 56da313c74b40b0af9ee4de784d1c1c8ed6d288b /drivers/usb/chipidea | |
| parent | usb: chipidea: core: add controller resume support when controller is powered... (diff) | |
| download | linux-450857c6058f092167f17bad97a2cc9c2a39b9a0.tar.xz linux-450857c6058f092167f17bad97a2cc9c2a39b9a0.zip | |
usb: chipidea: core: handle suspend/resume for each role
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>
Diffstat (limited to 'drivers/usb/chipidea')
| -rw-r--r-- | drivers/usb/chipidea/ci.h | 4 | ||||
| -rw-r--r-- | drivers/usb/chipidea/core.c | 8 |
2 files changed, 12 insertions, 0 deletions
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); |