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Message-ID: <CAPDyKFq=z8QQ3BLHd=sdJUcP+ZuekUzaBEt5PLARgJWD=PBMpA@mail.gmail.com> Date: Fri, 6 Sep 2024 11:01:13 +0200 From: Ulf Hansson <ulf.hansson@...aro.org> To: Kevin Hilman <khilman@...libre.com> Cc: linux-pm@...r.kernel.org, Nishanth Menon <nm@...com>, Vibhore Vardhan <vibhore@...com>, Dhruva Gole <d-gole@...com>, Akashdeep Kaur <a-kaur@...com>, Sebin Francis <sebin.francis@...com>, Markus Schneider-Pargmann <msp@...libre.com>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v3 2/3] pmdomain: ti_sci: add wakeup constraint management On Fri, 6 Sept 2024 at 00:03, Kevin Hilman <khilman@...libre.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@...com> > Signed-off-by: Vibhore Vardhan <vibhore@...com> > Signed-off-by: Kevin Hilman <khilman@...libre.com> > Signed-off-by: Dhruva Gole <d-gole@...com> Reviewed-by: Ulf Hansson <ulf.hansson@...aro.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 >
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