linux-kernel - [PATCH v3 2/2] cpufreq: imx6q: add of_init_opp

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Message-Id: <1387512929-7304-2-git-send-email-john.tobias.ph@gmail.com>
Date:	Thu, 19 Dec 2013 20:15:29 -0800
From:	John Tobias <john.tobias.ph@...il.com>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org, cpufreq@...r.kernel.org,
	rjw@...ysocki.net, shawn.guo@...aro.org, festevam@...il.com,
	b20788@...escale.com, viresh.kumar@...aro.org
Cc:	John Tobias <john.tobias.ph@...il.com>
Subject: [PATCH v3 2/2] cpufreq: imx6q: add of_init_opp_table

Add a routine check to see if the platform supplied the OPP table.
Incase there's not OPP table exist, it will try to get it.

Signed-off-by: John Tobias <john.tobias.ph@...il.com>
---
 drivers/cpufreq/imx6q-cpufreq.c | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c
index 4b3f18e..f261a88 100644
--- a/drivers/cpufreq/imx6q-cpufreq.c
+++ b/drivers/cpufreq/imx6q-cpufreq.c
@@ -187,12 +187,25 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev)
 		goto put_node;
 	}
 
-	/* We expect an OPP table supplied by platform */
+	/* We expect an OPP table supplied by platform.
+	 * Just, incase the platform did not supply the OPP
+	 * table, it will try to get it.
+	 */
 	num = dev_pm_opp_get_opp_count(cpu_dev);
 	if (num < 0) {
-		ret = num;
-		dev_err(cpu_dev, "no OPP table is found: %d\n", ret);
-		goto put_node;
+		ret = of_init_opp_table(cpu_dev);
+		if (ret < 0) {
+			dev_err(cpu_dev, "failed to init OPP table\n");
+			ret = -ENODEV;
+			goto put_node;
+		}
+
+		num = dev_pm_opp_get_opp_count(cpu_dev);
+		if (num < 0) {
+			ret = num;
+			dev_err(cpu_dev, "no OPP table is found: %d\n", ret);
+			goto put_node;
+		}
 	}
 
 	ret = dev_pm_opp_init_cpufreq_table(cpu_dev, &freq_table);
-- 
1.8.3.2

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