| Message ID | 20240905-lpm-v6-10-constraints-pmdomain-v3-2-e359cbb39654@baylibre.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | pmdomain: ti_sci: collect and send low-power mode constraints | expand |
On Fri, 6 Sept 2024 at 00:03, Kevin Hilman <khilman@baylibre.com> wrote: > > 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: Vibhore Vardhan <vibhore@ti.com> > Signed-off-by: Vibhore Vardhan <vibhore@ti.com> > Signed-off-by: Kevin Hilman <khilman@baylibre.com> > Signed-off-by: Dhruva Gole <d-gole@ti.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Kind regards Uffe > --- > drivers/pmdomain/ti/ti_sci_pm_domains.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > > diff --git a/drivers/pmdomain/ti/ti_sci_pm_domains.c b/drivers/pmdomain/ti/ti_sci_pm_domains.c > index bb95c40ab3ea..1ab1e46924ab 100644 > --- a/drivers/pmdomain/ti/ti_sci_pm_domains.c > +++ b/drivers/pmdomain/ti/ti_sci_pm_domains.c > @@ -74,6 +74,21 @@ static void ti_sci_pd_set_lat_constraint(struct device *dev, s32 val) > pd->idx, val); > } > > +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 > @@ -115,6 +130,8 @@ 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; > } > > > -- > 2.46.0 >
diff --git a/drivers/pmdomain/ti/ti_sci_pm_domains.c b/drivers/pmdomain/ti/ti_sci_pm_domains.c index bb95c40ab3ea..1ab1e46924ab 100644 --- a/drivers/pmdomain/ti/ti_sci_pm_domains.c +++ b/drivers/pmdomain/ti/ti_sci_pm_domains.c @@ -74,6 +74,21 @@ static void ti_sci_pd_set_lat_constraint(struct device *dev, s32 val) pd->idx, val); } +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 @@ -115,6 +130,8 @@ 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; }