iio: bmi270: suspend and resume triggering on relevant pm operations

Prevent triggers from stop working after the device has entered sleep:
use iio_device_suspend_triggering and iio_device_resume_triggering helpers.

Closes: https://lore.kernel.org/all/31d7f7aa-e834-4fd0-a66a-e0ff528425dc@gmail.com
Signed-off-by: Denis Benato <benato.denis96@gmail.com>
Tested-by: Justin Weiss <justin@justinweiss.com>
Link: https://patch.msgid.link/20250525142530.71955-2-benato.denis96@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/imu/bmi270/bmi270.h b/drivers/iio/imu/bmi270/bmi270.h
index d94525f6aee85f21cc9e9ae1bc9c1db0dc00b927..a6c4204032fccae8e40fa16fbc3bb971cd094ec8 100644 (file)
--- a/drivers/iio/imu/bmi270/bmi270.h
+++ b/drivers/iio/imu/bmi270/bmi270.h
@@ -20,4 +20,6 @@ struct device;
 int bmi270_core_probe(struct device *dev, struct regmap *regmap,
                      const struct bmi270_chip_info *chip_info);
 
+extern const struct dev_pm_ops bmi270_core_pm_ops;
+
 #endif  /* BMI270_H_ */

diff --git a/drivers/iio/imu/bmi270/bmi270_core.c b/drivers/iio/imu/bmi270/bmi270_core.c
index 2e4469f30d538ca3e9eb9ef8bbc6eaa8b6a144b8..b54658f972ad2bd673de1acd19b7132926ec8640 100644 (file)
--- a/drivers/iio/imu/bmi270/bmi270_core.c
+++ b/drivers/iio/imu/bmi270/bmi270_core.c
@@ -982,6 +982,7 @@ int bmi270_core_probe(struct device *dev, struct regmap *regmap,
        indio_dev->available_scan_masks = bmi270_avail_scan_masks;
        indio_dev->modes = INDIO_DIRECT_MODE;
        indio_dev->info = &bmi270_info;
+       dev_set_drvdata(data->dev, indio_dev);
 
        ret = bmi270_trigger_probe(data, indio_dev);
        if (ret)
@@ -997,6 +998,25 @@ int bmi270_core_probe(struct device *dev, struct regmap *regmap,
 }
 EXPORT_SYMBOL_NS_GPL(bmi270_core_probe, "IIO_BMI270");
 
+static int bmi270_core_runtime_suspend(struct device *dev)
+{
+       struct iio_dev *indio_dev = dev_get_drvdata(dev);
+
+       return iio_device_suspend_triggering(indio_dev);
+}
+
+static int bmi270_core_runtime_resume(struct device *dev)
+{
+       struct iio_dev *indio_dev = dev_get_drvdata(dev);
+
+       return iio_device_resume_triggering(indio_dev);
+}
+
+const struct dev_pm_ops bmi270_core_pm_ops = {
+       RUNTIME_PM_OPS(bmi270_core_runtime_suspend, bmi270_core_runtime_resume, NULL)
+};
+EXPORT_SYMBOL_NS_GPL(bmi270_core_pm_ops, "IIO_BMI270");
+
 MODULE_AUTHOR("Alex Lanzano");
 MODULE_DESCRIPTION("BMI270 driver");
 MODULE_LICENSE("GPL");

diff --git a/drivers/iio/imu/bmi270/bmi270_i2c.c b/drivers/iio/imu/bmi270/bmi270_i2c.c
index 44699ab589097eaa0eec5f2172245496ed031185..c77839b03a969f6f149c025a0305c4b9b8ac6571 100644 (file)
--- a/drivers/iio/imu/bmi270/bmi270_i2c.c
+++ b/drivers/iio/imu/bmi270/bmi270_i2c.c
@@ -4,6 +4,7 @@
 #include <linux/iio/iio.h>
 #include <linux/module.h>
 #include <linux/mod_devicetable.h>
+#include <linux/pm.h>
 #include <linux/regmap.h>
 
 #include "bmi270.h"
@@ -52,6 +53,7 @@ static const struct of_device_id bmi270_of_match[] = {
 static struct i2c_driver bmi270_i2c_driver = {
        .driver = {
                .name = "bmi270_i2c",
+               .pm = pm_ptr(&bmi270_core_pm_ops),
                .acpi_match_table = bmi270_acpi_match,
                .of_match_table = bmi270_of_match,
        },

diff --git a/drivers/iio/imu/bmi270/bmi270_spi.c b/drivers/iio/imu/bmi270/bmi270_spi.c
index 88a77aba5e4f7d6f36d508a6490ff79ffcf2d5df..19dd7734f9d07c4d62ed2f7144a801aa85439059 100644 (file)
--- a/drivers/iio/imu/bmi270/bmi270_spi.c
+++ b/drivers/iio/imu/bmi270/bmi270_spi.c
@@ -3,6 +3,7 @@
 #include <linux/iio/iio.h>
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
+#include <linux/pm.h>
 #include <linux/regmap.h>
 #include <linux/spi/spi.h>
 
@@ -79,6 +80,7 @@ static const struct of_device_id bmi270_of_match[] = {
 static struct spi_driver bmi270_spi_driver = {
        .driver = {
                .name = "bmi270",
+               .pm = pm_ptr(&bmi270_core_pm_ops),
                .of_match_table = bmi270_of_match,
        },
        .probe = bmi270_spi_probe,