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Message-Id: <20240905-lpm-v6-10-constraints-pmdomain-v3-2-e359cbb39654@baylibre.com> Date: Thu, 05 Sep 2024 15:02:50 -0700 From: Kevin Hilman <khilman@...libre.com> To: Ulf Hansson <ulf.hansson@...aro.org>, linux-pm@...r.kernel.org Cc: 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: [PATCH v3 2/3] 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: 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> --- 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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