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Mon, 19 Aug 2024 17:00:28 -0700 (PDT) From: Kevin Hilman Date: Mon, 19 Aug 2024 17:00:12 -0700 Subject: [PATCH v2 2/3] pmdomain: ti_sci: add wakeup constraint management Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240819-lpm-v6-10-constraints-pmdomain-v2-2-461325a6008f@baylibre.com> References: <20240819-lpm-v6-10-constraints-pmdomain-v2-0-461325a6008f@baylibre.com> In-Reply-To: <20240819-lpm-v6-10-constraints-pmdomain-v2-0-461325a6008f@baylibre.com> To: Ulf Hansson , linux-pm@vger.kernel.org Cc: Nishanth Menon , Vibhore Vardhan , Dhruva Gole , Akashdeep Kaur , Sebin Francis , Markus Schneider-Pargmann , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1735; i=khilman@baylibre.com; h=from:subject:message-id; bh=tUlhhvUzqEYQ9xxjHzkEQgHRjJRMt3U1MS2Dj9MMzKs=; b=owEBbQKS/ZANAwAKAVk3GJrT+8ZlAcsmYgBmw9yaw4z8Tn2b14jGRvuZX85gZ7ivnQCQWDNjy eJOyqKt2oqJAjMEAAEKAB0WIQR7h0YOFpJ/qfW/8QxZNxia0/vGZQUCZsPcmgAKCRBZNxia0/vG Zaa9D/0T7h6tsTpPWJ/ttDQEwpzwuZgC0zUMUYapMHQMP+3gx1wS03bIEiCPiWYukJKn6Zu5G4j TwPRwPah8RJeC7muQk3sJNH2SCaI8pJb+QsYuVyTWKJ7x0Rl1XhZFpJzDze//8o0oAoPF1jGTrB O+8PMibGcfTv8rmiljFBwTyx52J8JGXdYXVPV9gw6G66TIpiiQW/dnGXqXEwhtAMH+3cAaKeusD 87bQ7zYcLtu++AgSIFmdU8G+UNxc8BoDcnEpnk1ToBVXCgZoXaWwztIW8Mow8Yl8EwAIi8TdZm7 CSXZhfkQbwYNBJWOQ6nE3rDaQNyaTRbfT0D+6sXeFaunQNqUrIN9M8rznM/aCzEUd+7lcHBM1eJ pRbEuKLjhHj+g+qzfHlPJ31F1RQ7eh5U9/Fu+C1pGcfzz4nawTx4/ViuPNP1KTN6ZbYPanIcrLF 3/F8/V6ZWZPH5DcciGWnTtR6N1R2R1+o68EXROklT1sq/pq+DN8l4z6vzMN+a5I8YoyzmiRRIBy w38cEq8seTPnFvlMx8e4PuqKRgHjhIcqxHXg3t+qwXjAJpmkVPFy+J/YO4m6sS9LCeLABn5gG/i luhEZyvX98OTmDRoK69HGHI7QDZR0fZszgX93Hhy/ILwfxO8ztS6xP6Cq/aTZcp2nHrnPe9HNFM gepXr4pmMzQgkZg== X-Developer-Key: i=khilman@baylibre.com; a=openpgp; fpr=7B87460E16927FA9F5BFF10C5937189AD3FBC665 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 Signed-off-by: Vibhore Vardhan Signed-off-by: Kevin Hilman Signed-off-by: Dhruva Gole --- drivers/pmdomain/ti/ti_sci_pm_domains.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/pmdomain/ti/ti_sci_pm_domains.c b/drivers/pmdomain/ti/ti_sci_pm_domains.c index 963272fa387b..8af907579152 100644 --- a/drivers/pmdomain/ti/ti_sci_pm_domains.c +++ b/drivers/pmdomain/ti/ti_sci_pm_domains.c @@ -76,6 +76,23 @@ static int ti_sci_pd_set_lat_constraint(struct device *dev, s32 val) return ret; } +static inline bool 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); + } + + return true; +} + /* * ti_sci_pd_power_off(): genpd power down hook * @domain: pointer to the powerdomain to power off @@ -117,6 +134,8 @@ 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; }