[PATCH/RFC v2 06/12] PM / Domains: Retrieve PM QoS device latencies from DT
From: geert+renesas@glider.be (Geert Uytterhoeven)
Date: 2014-09-16 18:52:41
Also in:
linux-devicetree, linux-pm, linux-sh, lkml
Subsystem:
driver core, kobjects, debugfs and sysfs, hibernation (aka software suspend, aka swsusp), power management core, suspend to ram, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Linus Torvalds
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> --- v2: - New --- drivers/base/power/domain.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
index e1cbde985d4de606..7b166911be541229 100644
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c@@ -2133,6 +2133,8 @@ int genpd_dev_pm_attach(struct device *dev) struct device_node *np = dev->of_node; struct of_phandle_args pd_args; struct generic_pm_domain *pd; + struct gpd_timing_data td; + u32 latency; int ret; if (!np)
@@ -2165,10 +2167,20 @@ int genpd_dev_pm_attach(struct device *dev) return PTR_ERR(pd); } + memset(&td, 0, sizeof(td)); + if (!of_property_read_u32(np, "stop-latency", &latency)) + td.stop_latency_ns = latency; + if (!of_property_read_u32(np, "start-latency", &latency)) + td.start_latency_ns = latency; + if (!of_property_read_u32(np, "save-state-latency", &latency)) + td.save_state_latency_ns = latency; + if (!of_property_read_u32(np, "restore-state-latency", &latency)) + td.restore_state_latency_ns = latency; + dev_dbg(dev, "adding to PM domain %s\n", pd->name); while (1) { - ret = pm_genpd_add_device(pd, dev); + ret = __pm_genpd_add_device(pd, dev, &td); if (ret != -EAGAIN) break; cond_resched();
--
1.9.1