iio:pressure:zpa2326: Move exports into IIO_ZPA2326 namespace

In order to avoid unnecessary pollution of the global symbol namespace
move the common/library functions into a specific namespace and import
that into the bus specific device drivers that use them.

For more information see https://lwn.net/Articles/760045/Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220130205701.334592-10-jic23@kernel.org

drivers/iio/pressure/zpa2326.c

@@ -162,7 +162,7 @@ bool zpa2326_isreg_writeable(struct device *dev, unsigned int reg)
 		return false;
 	}
 }
-EXPORT_SYMBOL_GPL(zpa2326_isreg_writeable);
+EXPORT_SYMBOL_NS_GPL(zpa2326_isreg_writeable, IIO_ZPA2326);
 
 bool zpa2326_isreg_readable(struct device *dev, unsigned int reg)
 {
@@ -191,7 +191,7 @@ bool zpa2326_isreg_readable(struct device *dev, unsigned int reg)
 		return false;
 	}
 }
-EXPORT_SYMBOL_GPL(zpa2326_isreg_readable);
+EXPORT_SYMBOL_NS_GPL(zpa2326_isreg_readable, IIO_ZPA2326);
 
 bool zpa2326_isreg_precious(struct device *dev, unsigned int reg)
 {
@@ -204,7 +204,7 @@ bool zpa2326_isreg_precious(struct device *dev, unsigned int reg)
 		return false;
 	}
 }
-EXPORT_SYMBOL_GPL(zpa2326_isreg_precious);
+EXPORT_SYMBOL_NS_GPL(zpa2326_isreg_precious, IIO_ZPA2326);
 
 /**
  * zpa2326_enable_device() - Enable device, i.e. get out of low power mode.
@@ -649,7 +649,7 @@ const struct dev_pm_ops zpa2326_pm_ops = {
 	SET_RUNTIME_PM_OPS(zpa2326_runtime_suspend, zpa2326_runtime_resume,
 			   NULL)
 };
-EXPORT_SYMBOL_GPL(zpa2326_pm_ops);
+EXPORT_SYMBOL_NS_GPL(zpa2326_pm_ops, IIO_ZPA2326);
 
 /**
  * zpa2326_resume() - Request the PM layer to power supply the device.
@@ -1698,7 +1698,7 @@ int zpa2326_probe(struct device *parent,
 
 	return err;
 }
-EXPORT_SYMBOL_GPL(zpa2326_probe);
+EXPORT_SYMBOL_NS_GPL(zpa2326_probe, IIO_ZPA2326);
 
 void zpa2326_remove(const struct device *parent)
 {
@@ -1709,7 +1709,7 @@ void zpa2326_remove(const struct device *parent)
 	zpa2326_sleep(indio_dev);
 	zpa2326_power_off(indio_dev, iio_priv(indio_dev));
 }
-EXPORT_SYMBOL_GPL(zpa2326_remove);
+EXPORT_SYMBOL_NS_GPL(zpa2326_remove, IIO_ZPA2326);
 
 MODULE_AUTHOR("Gregor Boirie <gregor.boirie@parrot.com>");
 MODULE_DESCRIPTION("Core driver for Murata ZPA2326 pressure sensor");

drivers/iio/pressure/zpa2326_i2c.c

@@ -87,3 +87,4 @@ module_i2c_driver(zpa2326_i2c_driver);
 MODULE_AUTHOR("Gregor Boirie <gregor.boirie@parrot.com>");
 MODULE_DESCRIPTION("I2C driver for Murata ZPA2326 pressure sensor");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ZPA2326);

drivers/iio/pressure/zpa2326_spi.c

@@ -91,3 +91,4 @@ module_spi_driver(zpa2326_spi_driver);
 MODULE_AUTHOR("Gregor Boirie <gregor.boirie@parrot.com>");
 MODULE_DESCRIPTION("SPI driver for Murata ZPA2326 pressure sensor");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ZPA2326);