linux-kernel - [PATCH/RFC v2 06/12] PM / Domains: Retrieve PM QoS device latencies from DT

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Date:	Tue, 16 Sep 2014 20:48:53 +0200
From:	Geert Uytterhoeven <geert+renesas@...der.be>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
	Simon Horman <horms@...ge.net.au>,
	Magnus Damm <magnus.damm@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>
Cc:	Ulf Hansson <ulf.hansson@...aro.org>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Philipp Zabel <philipp.zabel@...il.com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Kevin Hilman <khilman@...aro.org>, linux-pm@...r.kernel.org,
	devicetree@...r.kernel.org, linux-sh@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH/RFC v2 06/12] PM / Domains: Retrieve PM QoS device latencies from DT

Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.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

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