linux-kernel - [PATCH 2/2] cpufreq: OMAP: Register an Energy Model

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Date:   Wed,  6 Feb 2019 23:35:50 -0500
From:   Yangtao Li <tiny.windzz@...il.com>
To:     khilman@...nel.org, rjw@...ysocki.net, viresh.kumar@...aro.org,
        quentin.perret@....com, linux-kernel@...r.kernel.org
Cc:     linux-omap@...r.kernel.org, linux-pm@...r.kernel.org,
        Yangtao Li <tiny.windzz@...il.com>
Subject: [PATCH 2/2] cpufreq: OMAP: Register an Energy Model

Try and register an Energy Model from omap-cpufreq.c to allow
interested subsystems like the task scheduler to use the provided
information.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
---
 drivers/cpufreq/omap-cpufreq.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c
index 71e81bbf031b..68052b74d28f 100644
--- a/drivers/cpufreq/omap-cpufreq.c
+++ b/drivers/cpufreq/omap-cpufreq.c
@@ -133,8 +133,10 @@ static int omap_cpu_init(struct cpufreq_policy *policy)
 
 	/* FIXME: what's the actual transition time? */
 	result = cpufreq_generic_init(policy, freq_table, 300 * 1000);
-	if (!result)
+	if (!result) {
+		dev_pm_opp_of_register_em(policy->cpus);
 		return 0;
+	}
 
 	freq_table_free();
 fail:
-- 
2.17.0