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charset="utf-8" From: Peng Fan Support System suspend notification. Using a work struct to call pm_suspend. There is no way to pass suspend level to pm_suspend, so use MEM as of now. Signed-off-by: Peng Fan --- .../firmware/arm_scmi/scmi_power_control.c | 20 ++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/arm_scmi/scmi_power_control.c b/drivers/firmw= are/arm_scmi/scmi_power_control.c index 6eb7d2a4b6b1..beafca9957c7 100644 --- a/drivers/firmware/arm_scmi/scmi_power_control.c +++ b/drivers/firmware/arm_scmi/scmi_power_control.c @@ -50,6 +50,7 @@ #include #include #include +#include #include #include #include @@ -90,6 +91,7 @@ struct scmi_syspower_conf { struct notifier_block reboot_nb; =20 struct delayed_work forceful_work; + struct work_struct suspend_work; }; =20 #define userspace_nb_to_sconf(x) \ @@ -249,6 +251,9 @@ static void scmi_request_graceful_transition(struct scm= i_syspower_conf *sc, case SCMI_SYSTEM_WARMRESET: orderly_reboot(); break; + case SCMI_SYSTEM_SUSPEND: + schedule_work(&sc->suspend_work); + break; default: break; } @@ -277,7 +282,8 @@ static int scmi_userspace_notifier(struct notifier_bloc= k *nb, struct scmi_system_power_state_notifier_report *er =3D data; struct scmi_syspower_conf *sc =3D userspace_nb_to_sconf(nb); =20 - if (er->system_state >=3D SCMI_SYSTEM_POWERUP) { + if (er->system_state >=3D SCMI_SYSTEM_MAX || + er->system_state =3D=3D SCMI_SYSTEM_POWERUP) { dev_err(sc->dev, "Ignoring unsupported system_state: 0x%X\n", er->system_state); return NOTIFY_DONE; @@ -315,6 +321,16 @@ static int scmi_userspace_notifier(struct notifier_blo= ck *nb, return NOTIFY_OK; } =20 +static void scmi_suspend_work_func(struct work_struct *work) +{ + struct scmi_syspower_conf *sc =3D + container_of(work, struct scmi_syspower_conf, suspend_work); + + pm_suspend(PM_SUSPEND_MEM); + + sc->state =3D SCMI_SYSPOWER_IDLE; +} + static int scmi_syspower_probe(struct scmi_device *sdev) { int ret; @@ -338,6 +354,8 @@ static int scmi_syspower_probe(struct scmi_device *sdev) sc->userspace_nb.notifier_call =3D &scmi_userspace_notifier; sc->dev =3D &sdev->dev; =20 + INIT_WORK(&sc->suspend_work, scmi_suspend_work_func); + return handle->notify_ops->devm_event_notifier_register(sdev, SCMI_PROTOCOL_SYSTEM, SCMI_EVENT_SYSTEM_POWER_STATE_NOTIFIER, --=20 2.37.1