linux-kernel - [PATCH] thermal: imx: fix for dependency on cpu-freq

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Message-ID: <1540362909-32481-1-git-send-email-Anson.Huang@nxp.com>
Date:   Wed, 24 Oct 2018 06:39:53 +0000
From:   Anson Huang <anson.huang@....com>
To:     "rui.zhang@...el.com" <rui.zhang@...el.com>,
        "edubezval@...il.com" <edubezval@...il.com>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     dl-linux-imx <linux-imx@....com>
Subject: [PATCH] thermal: imx: fix for dependency on cpu-freq

The thermal driver is a standalone driver for monitoring SoC temperature
by enabling thermal sensor, so it can be enabled even when CONFIG_CPU_FREQ
is NOT set. So remove the dependency with CPU_THERMAL.

Add CONFIG_CPU_FREQ check for cpu-freq related operation in thermal
driver to make thermal driver probe successfully when CONFIG_CPU_FREQ
is NOT set.

Signed-off-by: Anson Huang <Anson.Huang@....com>
---
 drivers/thermal/Kconfig       | 2 +-
 drivers/thermal/imx_thermal.c | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 1775d44..c8a6352 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -212,7 +212,7 @@ config HISI_THERMAL
 
 config IMX_THERMAL
 	tristate "Temperature sensor driver for Freescale i.MX SoCs"
-	depends on (ARCH_MXC && CPU_THERMAL) || COMPILE_TEST
+	depends on ARCH_MXC || COMPILE_TEST
 	depends on NVMEM || !NVMEM
 	depends on MFD_SYSCON
 	depends on OF
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index 1566154..87386d1 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -648,6 +648,7 @@ static const struct of_device_id of_imx_thermal_match[] = {
 };
 MODULE_DEVICE_TABLE(of, of_imx_thermal_match);
 
+#ifdef CONFIG_CPU_FREQ
 /*
  * Create cooling device in case no #cooling-cells property is available in
  * CPU node
@@ -668,6 +669,7 @@ static int imx_thermal_register_legacy_cooling(struct imx_thermal_data *data)
 
 	return 0;
 }
+#endif
 
 static int imx_thermal_probe(struct platform_device *pdev)
 {
@@ -743,6 +745,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
 	regmap_write(map, data->socdata->sensor_ctrl + REG_SET,
 		     data->socdata->power_down_mask);
 
+#ifdef CONFIG_CPU_FREQ
 	data->policy = cpufreq_cpu_get(0);
 	if (!data->policy) {
 		pr_debug("%s: CPUFreq policy not found\n", __func__);
@@ -755,6 +758,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
 			"failed to register cpufreq cooling device: %d\n", ret);
 		return ret;
 	}
+#endif
 
 	data->thermal_clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(data->thermal_clk)) {
-- 
2.7.4