Introduce a new video4linux2 i2c helper, to unregister a subdev.
This allows to get rid of yet another ifdef.
Signed-off-by: Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx>
---
Changes v2:
* None.
---
drivers/media/v4l2-core/v4l2-device.c | 25 ++-----------------------
drivers/media/v4l2-core/v4l2-i2c.c | 20 ++++++++++++++++++++
include/media/v4l2-common.h | 10 ++++++++++
3 files changed, 32 insertions(+), 23 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-device.c b/drivers/media/v4l2-core/v4l2-device.c
index c2811238996f..63d6b147b21e 100644
--- a/drivers/media/v4l2-core/v4l2-device.c
+++ b/drivers/media/v4l2-core/v4l2-device.c
@@ -9,7 +9,6 @@
#include <linux/types.h>
#include <linux/ioctl.h>
#include <linux/module.h>
-#include <linux/i2c.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
@@ -99,28 +98,8 @@ void v4l2_device_unregister(struct v4l2_device *v4l2_dev)
/* Unregister subdevs */
list_for_each_entry_safe(sd, next, &v4l2_dev->subdevs, list) {
v4l2_device_unregister_subdev(sd);
-#if IS_ENABLED(CONFIG_I2C)
- if (sd->flags & V4L2_SUBDEV_FL_IS_I2C) {
- struct i2c_client *client = v4l2_get_subdevdata(sd);
-
- /*
- * We need to unregister the i2c client
- * explicitly. We cannot rely on
- * i2c_del_adapter to always unregister
- * clients for us, since if the i2c bus is a
- * platform bus, then it is never deleted.
- *
- * Device tree or ACPI based devices must not
- * be unregistered as they have not been
- * registered by us, and would not be
- * re-created by just probing the V4L2 driver.
- */
- if (client &&
- !client->dev.of_node && !client->dev.fwnode)
- i2c_unregister_device(client);
- continue;
- }
-#endif
+ if (sd->flags & V4L2_SUBDEV_FL_IS_I2C)
+ v4l2_i2c_subdev_unregister(sd);
else if (sd->flags & V4L2_SUBDEV_FL_IS_SPI)
v4l2_spi_subdev_unregister(sd);
}
diff --git a/drivers/media/v4l2-core/v4l2-i2c.c b/drivers/media/v4l2-core/v4l2-i2c.c
index f393dd4f1c00..3d7a3081ec0b 100644
--- a/drivers/media/v4l2-core/v4l2-i2c.c
+++ b/drivers/media/v4l2-core/v4l2-i2c.c
@@ -8,6 +8,26 @@
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
+void v4l2_i2c_subdev_unregister(struct v4l2_subdev *sd)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ /*
+ * We need to unregister the i2c client
+ * explicitly. We cannot rely on
+ * i2c_del_adapter to always unregister
+ * clients for us, since if the i2c bus is a
+ * platform bus, then it is never deleted.
+ *
+ * Device tree or ACPI based devices must not
+ * be unregistered as they have not been
+ * registered by us, and would not be
+ * re-created by just probing the V4L2 driver.
+ */
+ if (client && !client->dev.of_node && !client->dev.fwnode)
+ i2c_unregister_device(client);
+}
+
void v4l2_i2c_subdev_set_name(struct v4l2_subdev *sd, struct i2c_client *client,
const char *devname, const char *postfix)
{
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h
index e2878654d043..c070d8ae11e5 100644
--- a/include/media/v4l2-common.h
+++ b/include/media/v4l2-common.h
@@ -211,6 +211,13 @@ unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd);
*/
const unsigned short *v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type);
+/**
+ * v4l2_i2c_subdev_unregister - Unregister a v4l2_subdev
+ *
+ * @sd: pointer to &struct v4l2_subdev
+ */
+void v4l2_i2c_subdev_unregister(struct v4l2_subdev *sd);
+
#else
static inline struct v4l2_subdev *
@@ -250,6 +257,9 @@ v4l2_i2c_tuner_addrs(enum v4l2_i2c_tuner_type type)
return NULL;
}
+static inline void v4l2_i2c_subdev_unregister(struct v4l2_subdev *sd)
+{}
+
#endif
/* ------------------------------------------------------------------------- */
--
2.22.0
