linux-kernel - [PATCH v5 2/3] cpufreq: dt: Add register helper

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Message-Id: <20250702-tegra124-cpufreq-v5-2-66ab3640a570@gmail.com>
Date: Wed, 02 Jul 2025 02:46:25 -0500
From: Aaron Kling via B4 Relay <devnull+webgeek1234.gmail.com@...nel.org>
To: "Rafael J. Wysocki" <rafael@...nel.org>, 
 Viresh Kumar <viresh.kumar@...aro.org>, 
 Thierry Reding <thierry.reding@...il.com>, 
 Jonathan Hunter <jonathanh@...dia.com>
Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-tegra@...r.kernel.org, Aaron Kling <webgeek1234@...il.com>
Subject: [PATCH v5 2/3] cpufreq: dt: Add register helper

From: Aaron Kling <webgeek1234@...il.com>

Cpufreq-dt currently exports no functions. This means that drivers that
are based on cpufreq-dt have no way of establishing a depmod dependency
on it. This helper allows that link.

Signed-off-by: Aaron Kling <webgeek1234@...il.com>
---
 drivers/cpufreq/cpufreq-dt.c | 11 +++++++++++
 drivers/cpufreq/cpufreq-dt.h |  2 ++
 2 files changed, 13 insertions(+)

diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c
index e80dd982a3e23f6e678d691daba2d8bfda28d93c..506437489b4db241a7a6259274ae84e688772e66 100644
--- a/drivers/cpufreq/cpufreq-dt.c
+++ b/drivers/cpufreq/cpufreq-dt.c
@@ -329,6 +329,17 @@ static struct platform_driver dt_cpufreq_platdrv = {
 };
 module_platform_driver(dt_cpufreq_platdrv);

+struct platform_device *cpufreq_dt_pdev_register(struct device *dev)
+{
+	struct platform_device_info cpufreq_dt_devinfo = {};
+
+	cpufreq_dt_devinfo.name = "cpufreq-dt";
+	cpufreq_dt_devinfo.parent = dev;
+
+	return platform_device_register_full(&cpufreq_dt_devinfo);
+}
+EXPORT_SYMBOL_GPL(cpufreq_dt_pdev_register);
+
 MODULE_ALIAS("platform:cpufreq-dt");
 MODULE_AUTHOR("Viresh Kumar <viresh.kumar@...aro.org>");
 MODULE_AUTHOR("Shawn Guo <shawn.guo@...aro.org>");
diff --git a/drivers/cpufreq/cpufreq-dt.h b/drivers/cpufreq/cpufreq-dt.h
index 28c8af7ec5ef3ad0aa94f43ad9129600ca094329..fc1889aeb4f1f15fa7c46c2380021bbf40b62f11 100644
--- a/drivers/cpufreq/cpufreq-dt.h
+++ b/drivers/cpufreq/cpufreq-dt.h
@@ -22,4 +22,6 @@ struct cpufreq_dt_platform_data {
 	int (*resume)(struct cpufreq_policy *policy);
 };

+struct platform_device *cpufreq_dt_pdev_register(struct device *dev);
+
 #endif /* __CPUFREQ_DT_H__ */

-- 
2.50.0