iio: gyro: fxas210002c: Move exports to IIO_FXAS210002C namespace.

Includes using EXPORT_NS_GPL_DEV_PM_OPS() and the simplifications that
brings by allowing the compiler to remove unused struct dev_pm_ops
and callbacks without needing explicit __maybe_unused markings.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: Rui Miguel Silva <rui.silva@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

--
Dropped Rui's tag on basis this is rather different from v1 due to
the different macro implementation.

v2: Switch to Paul's more flexible approach to EXPORT_NS_GPL_DEV_PM_OPS()
Acked-by: Rui Miguel Silva <rui.silva@linaro.org>
Link: https://lore.kernel.org/r/20220925155719.3316280-4-jic23@kernel.orgSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

drivers/iio/gyro/fxas21002c_core.c

@@ -998,7 +998,7 @@ int fxas21002c_core_probe(struct device *dev, struct regmap *regmap, int irq,
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(fxas21002c_core_probe);
+EXPORT_SYMBOL_NS_GPL(fxas21002c_core_probe, IIO_FXAS21002C);
 
 void fxas21002c_core_remove(struct device *dev)
 {
@@ -1009,9 +1009,9 @@ void fxas21002c_core_remove(struct device *dev)
 	pm_runtime_disable(dev);
 	pm_runtime_set_suspended(dev);
 }
-EXPORT_SYMBOL_GPL(fxas21002c_core_remove);
+EXPORT_SYMBOL_NS_GPL(fxas21002c_core_remove, IIO_FXAS21002C);
 
-static int __maybe_unused fxas21002c_suspend(struct device *dev)
+static int fxas21002c_suspend(struct device *dev)
 {
 	struct fxas21002c_data *data = iio_priv(dev_get_drvdata(dev));
 
@@ -1021,7 +1021,7 @@ static int __maybe_unused fxas21002c_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused fxas21002c_resume(struct device *dev)
+static int fxas21002c_resume(struct device *dev)
 {
 	struct fxas21002c_data *data = iio_priv(dev_get_drvdata(dev));
 	int ret;
@@ -1033,26 +1033,25 @@ static int __maybe_unused fxas21002c_resume(struct device *dev)
 	return fxas21002c_mode_set(data, data->prev_mode);
 }
 
-static int __maybe_unused fxas21002c_runtime_suspend(struct device *dev)
+static int fxas21002c_runtime_suspend(struct device *dev)
 {
 	struct fxas21002c_data *data = iio_priv(dev_get_drvdata(dev));
 
 	return fxas21002c_mode_set(data, FXAS21002C_MODE_READY);
 }
 
-static int __maybe_unused fxas21002c_runtime_resume(struct device *dev)
+static int fxas21002c_runtime_resume(struct device *dev)
 {
 	struct fxas21002c_data *data = iio_priv(dev_get_drvdata(dev));
 
 	return fxas21002c_mode_set(data, FXAS21002C_MODE_ACTIVE);
 }
 
-const struct dev_pm_ops fxas21002c_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(fxas21002c_suspend, fxas21002c_resume)
-	SET_RUNTIME_PM_OPS(fxas21002c_runtime_suspend,
-			   fxas21002c_runtime_resume, NULL)
+EXPORT_NS_GPL_DEV_PM_OPS(fxas21002c_pm_ops, IIO_FXAS21002C) = {
+	SYSTEM_SLEEP_PM_OPS(fxas21002c_suspend, fxas21002c_resume)
+	RUNTIME_PM_OPS(fxas21002c_runtime_suspend, fxas21002c_runtime_resume,
+		       NULL)
 };
-EXPORT_SYMBOL_GPL(fxas21002c_pm_ops);
 
 MODULE_AUTHOR("Rui Miguel Silva <rui.silva@linaro.org>");
 MODULE_LICENSE("GPL v2");

drivers/iio/gyro/fxas21002c_i2c.c

@@ -53,7 +53,7 @@ MODULE_DEVICE_TABLE(of, fxas21002c_i2c_of_match);
 static struct i2c_driver fxas21002c_i2c_driver = {
 	.driver = {
 		.name = "fxas21002c_i2c",
-		.pm = &fxas21002c_pm_ops,
+		.pm = pm_ptr(&fxas21002c_pm_ops),
 		.of_match_table = fxas21002c_i2c_of_match,
 	},
 	.probe_new	= fxas21002c_i2c_probe,
@@ -65,3 +65,4 @@ module_i2c_driver(fxas21002c_i2c_driver);
 MODULE_AUTHOR("Rui Miguel Silva <rui.silva@linaro.org>");
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("FXAS21002C I2C Gyro driver");
+MODULE_IMPORT_NS(IIO_FXAS21002C);

drivers/iio/gyro/fxas21002c_spi.c

@@ -54,7 +54,7 @@ MODULE_DEVICE_TABLE(of, fxas21002c_spi_of_match);
 static struct spi_driver fxas21002c_spi_driver = {
 	.driver = {
 		.name = "fxas21002c_spi",
-		.pm = &fxas21002c_pm_ops,
+		.pm = pm_ptr(&fxas21002c_pm_ops),
 		.of_match_table = fxas21002c_spi_of_match,
 	},
 	.probe		= fxas21002c_spi_probe,
@@ -66,3 +66,4 @@ module_spi_driver(fxas21002c_spi_driver);
 MODULE_AUTHOR("Rui Miguel Silva <rui.silva@linaro.org>");
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("FXAS21002C SPI Gyro driver");
+MODULE_IMPORT_NS(IIO_FXAS21002C);