Commit 9d8aa0dd authored by Kevin Hilman's avatar Kevin Hilman Committed by Ulf Hansson
Browse files

pmdomain: ti_sci: add wakeup constraint management 



During system-wide suspend, check all devices connected to PM domain
to see if they are wakeup-enabled.  If so, set a TI SCI device
constraint.

Note: DM firmware clears all constraints on resume.

Co-developed-by: default avatarVibhore Vardhan <vibhore@ti.com>
Signed-off-by: default avatarVibhore Vardhan <vibhore@ti.com>
Reviewed-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Tested-by: default avatarDhruva Gole <d-gole@ti.com>
Signed-off-by: default avatarKevin Hilman <khilman@baylibre.com>
Reviewed-by: default avatarDhruva Gole <d-gole@ti.com>
Message-ID: <20241206-lpm-v6-10-constraints-pmdomain-v6-2-833980158c68@baylibre.com>
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent b5fc9453

drivers/pmdomain/ti/ti_sci_pm_domains.c

+17 −0
Original line number Diff line number Diff line
@@ -79,6 +79,21 @@ static void ti_sci_pd_set_lat_constraint(struct device *dev, s32 val) 
}

#endif



static inline void ti_sci_pd_set_wkup_constraint(struct device *dev)

{

	struct generic_pm_domain *genpd = pd_to_genpd(dev->pm_domain);

	struct ti_sci_pm_domain *pd = genpd_to_ti_sci_pd(genpd);

	const struct ti_sci_handle *ti_sci = pd->parent->ti_sci;

	int ret;



	if (device_may_wakeup(dev)) {

		ret = ti_sci->ops.pm_ops.set_device_constraint(ti_sci, pd->idx,

							       TISCI_MSG_CONSTRAINT_SET);

		if (!ret)

			dev_dbg(dev, "ti_sci_pd: ID:%d set device constraint.\n", pd->idx);

	}

}



/*

 * ti_sci_pd_power_off(): genpd power down hook

 * @domain: pointer to the powerdomain to power off
@@ -121,6 +136,8 @@ static int ti_sci_pd_suspend(struct device *dev) 
	if (ti_sci_pd_is_valid_constraint(val))

		ti_sci_pd_set_lat_constraint(dev, val);



	ti_sci_pd_set_wkup_constraint(dev);



	return 0;

}

#else