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Fri, 01 Nov 2024 08:36:46 -0700 (PDT) From: Kevin Hilman Date: Fri, 01 Nov 2024 08:36:21 -0700 Subject: [PATCH v5 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: <20241101-lpm-v6-10-constraints-pmdomain-v5-2-3011aa04622f@baylibre.com> References: <20241101-lpm-v6-10-constraints-pmdomain-v5-0-3011aa04622f@baylibre.com> In-Reply-To: <20241101-lpm-v6-10-constraints-pmdomain-v5-0-3011aa04622f@baylibre.com> To: Ulf Hansson , linux-pm@vger.kernel.org Cc: Nishanth Menon , Dhruva Gole , Akashdeep Kaur , Sebin Francis , Markus Schneider-Pargmann , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org X-Mailer: b4 0.15-dev-cb14d X-Developer-Signature: v=1; a=openpgp-sha256; l=1828; i=khilman@baylibre.com; h=from:subject:message-id; bh=j2mcJH9DFAs4uPVxByFXW0cY1Bip8MTsLuwf/lpgjjg=; b=owEBbQKS/ZANAwAIAVk3GJrT+8ZlAcsmYgBnJPWMwEgrEwQIThMQCDH53Co+Dy+UFgtBlPq02 yv5jNKxjgmJAjMEAAEIAB0WIQR7h0YOFpJ/qfW/8QxZNxia0/vGZQUCZyT1jAAKCRBZNxia0/vG ZVatD/9PIphhgrCdu4GvT0ZcoFVEWMYN/GveHyxQaVTgA7X8q9UnYzf4iDUabsgz2qdYYSriQJ4 LY9xLT5hNSDxrWndcYZWxPKlUY8LuFEnObdQgxSkF5ZIPQmZJDN67Aod2KvBS3eAE5R8oy5mg5m ztXHqiCZQLWsDmDrcIDn/tjPKJsbKsW6DJInNMWJE9lZxA1LUKU+zTttiVgdV98s+Ru/PniTjj4 heSjrtcAhLdbIE9g9V6beNrAoZef121yLyLGP9AqvtLz8DviR8uzHCxlSBuLdynS6WIzanAyNlt ijhsBPK/VaS2MM4IKHuNEI7ANMn8KFRG5ei6zCecMhtFKB0YUemewj6a+TvytfAosgoJmsa17xH 1dE387VUYyG/uxpPRRCLe3xEwAKx6O5N0ns9PM5eXngnq012v5Y9n+HlI5v8yQ4/rGMCaBbyCHj SPznTY2WdHrxB3FdhZPRz24njIsujGuZAFTaFzTfW/cHe7BABPQ2K+pAgMWWpeO1WCFsxWebf/9 EFm6sla20f+w/sUAQEV6FYK8HKTWD+iQxOqfo7ba4fhgAv2zLQoVXkc+4uBjgcxJ1P7tsK+pM3z B9Il7J3Kkv6vQniLQ59Uvq7ko8/Zy9c5R/0NZXOb+JS/Wu/MBxK5FipqemkpKR37ROfqBqyCPXS 3VBbw8YpsedLQTg== 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 Reviewed-by: Ulf Hansson Tested-by: Dhruva Gole Signed-off-by: Kevin Hilman --- 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 c976a382d64c807daea72fa1ea9d6c11c8773762..ff529fa2d6135cc2fb32ae8a3ca26ac055f66cf5 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 @@ -116,6 +131,8 @@ 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