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path: root/drivers/media/video/v4l2-common.c
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Diffstat (limited to 'drivers/media/video/v4l2-common.c')
-rw-r--r--drivers/media/video/v4l2-common.c62
1 files changed, 22 insertions, 40 deletions
diff --git a/drivers/media/video/v4l2-common.c b/drivers/media/video/v4l2-common.c
index 1da8cb836cb6..f576ef66b807 100644
--- a/drivers/media/video/v4l2-common.c
+++ b/drivers/media/video/v4l2-common.c
@@ -739,33 +739,8 @@ EXPORT_SYMBOL(v4l2_chip_ident_i2c_client);
/* ----------------------------------------------------------------- */
-/* Helper function for I2C legacy drivers */
+/* I2C Helper functions */
-int v4l2_i2c_attach(struct i2c_adapter *adapter, int address, struct i2c_driver *driver,
- const char *name,
- int (*probe)(struct i2c_client *, const struct i2c_device_id *))
-{
- struct i2c_client *client;
- int err;
-
- client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
- if (!client)
- return -ENOMEM;
-
- client->addr = address;
- client->adapter = adapter;
- client->driver = driver;
- strlcpy(client->name, name, sizeof(client->name));
-
- err = probe(client, NULL);
- if (err == 0) {
- i2c_attach_client(client);
- } else {
- kfree(client);
- }
- return err != -ENOMEM ? 0 : err;
-}
-EXPORT_SYMBOL(v4l2_i2c_attach);
void v4l2_i2c_subdev_init(struct v4l2_subdev *sd, struct i2c_client *client,
const struct v4l2_subdev_ops *ops)
@@ -785,18 +760,16 @@ EXPORT_SYMBOL_GPL(v4l2_i2c_subdev_init);
-/* Load an i2c sub-device. It assumes that i2c_get_adapdata(adapter)
- returns the v4l2_device and that i2c_get_clientdata(client)
- returns the v4l2_subdev. */
-struct v4l2_subdev *v4l2_i2c_new_subdev(struct i2c_adapter *adapter,
+/* Load an i2c sub-device. */
+struct v4l2_subdev *v4l2_i2c_new_subdev(struct v4l2_device *v4l2_dev,
+ struct i2c_adapter *adapter,
const char *module_name, const char *client_type, u8 addr)
{
- struct v4l2_device *dev = i2c_get_adapdata(adapter);
struct v4l2_subdev *sd = NULL;
struct i2c_client *client;
struct i2c_board_info info;
- BUG_ON(!dev);
+ BUG_ON(!v4l2_dev);
if (module_name)
request_module(module_name);
@@ -823,7 +796,7 @@ struct v4l2_subdev *v4l2_i2c_new_subdev(struct i2c_adapter *adapter,
/* Register with the v4l2_device which increases the module's
use count as well. */
- if (v4l2_device_register_subdev(dev, sd))
+ if (v4l2_device_register_subdev(v4l2_dev, sd))
sd = NULL;
/* Decrease the module use count to match the first try_module_get. */
module_put(client->driver->driver.owner);
@@ -837,19 +810,17 @@ error:
}
EXPORT_SYMBOL_GPL(v4l2_i2c_new_subdev);
-/* Probe and load an i2c sub-device. It assumes that i2c_get_adapdata(adapter)
- returns the v4l2_device and that i2c_get_clientdata(client)
- returns the v4l2_subdev. */
-struct v4l2_subdev *v4l2_i2c_new_probed_subdev(struct i2c_adapter *adapter,
+/* Probe and load an i2c sub-device. */
+struct v4l2_subdev *v4l2_i2c_new_probed_subdev(struct v4l2_device *v4l2_dev,
+ struct i2c_adapter *adapter,
const char *module_name, const char *client_type,
const unsigned short *addrs)
{
- struct v4l2_device *dev = i2c_get_adapdata(adapter);
struct v4l2_subdev *sd = NULL;
struct i2c_client *client = NULL;
struct i2c_board_info info;
- BUG_ON(!dev);
+ BUG_ON(!v4l2_dev);
if (module_name)
request_module(module_name);
@@ -875,7 +846,7 @@ struct v4l2_subdev *v4l2_i2c_new_probed_subdev(struct i2c_adapter *adapter,
/* Register with the v4l2_device which increases the module's
use count as well. */
- if (v4l2_device_register_subdev(dev, sd))
+ if (v4l2_device_register_subdev(v4l2_dev, sd))
sd = NULL;
/* Decrease the module use count to match the first try_module_get. */
module_put(client->driver->driver.owner);
@@ -889,6 +860,17 @@ error:
}
EXPORT_SYMBOL_GPL(v4l2_i2c_new_probed_subdev);
+struct v4l2_subdev *v4l2_i2c_new_probed_subdev_addr(struct v4l2_device *v4l2_dev,
+ struct i2c_adapter *adapter,
+ const char *module_name, const char *client_type, u8 addr)
+{
+ unsigned short addrs[2] = { addr, I2C_CLIENT_END };
+
+ return v4l2_i2c_new_probed_subdev(v4l2_dev, adapter,
+ module_name, client_type, addrs);
+}
+EXPORT_SYMBOL_GPL(v4l2_i2c_new_probed_subdev_addr);
+
/* Return i2c client address of v4l2_subdev. */
unsigned short v4l2_i2c_subdev_addr(struct v4l2_subdev *sd)
{