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Message-Id: <20190729083915.4855-4-Anson.Huang@nxp.com>
Date: Mon, 29 Jul 2019 16:39:15 +0800
From: Anson.Huang@....com
To: rui.zhang@...el.com, edubezval@...il.com,
daniel.lezcano@...aro.org, robh+dt@...nel.org,
mark.rutland@....com, linux-pm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Linux-imx@....com
Subject: [PATCH V2 4/4] thermal: qoriq: Add clock operations
From: Anson Huang <Anson.Huang@....com>
Some platforms like i.MX8MQ has clock control for this module,
need to add clock operations to make sure the driver is working
properly.
Signed-off-by: Anson Huang <Anson.Huang@....com>
Reviewed-by: Guido Günther <agx@...xcpu.org>
---
Changes since V1:
- use devm_clk_get_optional() instead of devm_clk_get().
---
drivers/thermal/qoriq_thermal.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
index 2b2f79b..0ae45c0 100644
--- a/drivers/thermal/qoriq_thermal.c
+++ b/drivers/thermal/qoriq_thermal.c
@@ -2,6 +2,7 @@
//
// Copyright 2016 Freescale Semiconductor, Inc.
+#include <linux/clk.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/err.h>
@@ -72,6 +73,7 @@ struct qoriq_sensor {
struct qoriq_tmu_data {
struct qoriq_tmu_regs __iomem *regs;
+ struct clk *clk;
bool little_endian;
struct qoriq_sensor *sensor[SITES_MAX];
};
@@ -208,6 +210,16 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
return PTR_ERR(data->regs);
}
+ data->clk = devm_clk_get_optional(&pdev->dev, NULL);
+ if (IS_ERR(data->clk))
+ return PTR_ERR(data->clk);
+
+ ret = clk_prepare_enable(data->clk);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to enable clock\n");
+ return ret;
+ }
+
qoriq_tmu_init_device(data); /* TMU initialization */
ret = qoriq_tmu_calibration(pdev); /* TMU calibration */
@@ -235,6 +247,8 @@ static int qoriq_tmu_remove(struct platform_device *pdev)
/* Disable monitoring */
tmu_write(data, TMR_DISABLE, &data->regs->tmr);
+ clk_disable_unprepare(data->clk);
+
platform_set_drvdata(pdev, NULL);
return 0;
@@ -250,14 +264,21 @@ static int __maybe_unused qoriq_tmu_suspend(struct device *dev)
tmr &= ~TMR_ME;
tmu_write(data, tmr, &data->regs->tmr);
+ clk_disable_unprepare(data->clk);
+
return 0;
}
static int __maybe_unused qoriq_tmu_resume(struct device *dev)
{
u32 tmr;
+ int ret;
struct qoriq_tmu_data *data = dev_get_drvdata(dev);
+ ret = clk_prepare_enable(data->clk);
+ if (ret)
+ return ret;
+
/* Enable monitoring */
tmr = tmu_read(data, &data->regs->tmr);
tmr |= TMR_ME;
--
2.7.4
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