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V4L/DVB (6460): v4l2-i2c-drv: add legacy_probe function pointer 

Some devices do complicated tests whether the device can be probed or not.
Add a legacy_probe function pointer to support that.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Hans Verkuil 2007-09-14 04:49:16 -03:00 committed by Mauro Carvalho Chehab
parent 1a39275a3f
commit 88307eb3c6
2 changed files with 7 additions and 0 deletions
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6
include/media/v4l2-i2c-drv-legacy.h
View File

@ -29,6 +29,7 @@ struct v4l2_i2c_driver_data {
int (*remove)(struct i2c_client *client); int (*remove)(struct i2c_client *client);
int (*suspend)(struct i2c_client *client, pm_message_t state); int (*suspend)(struct i2c_client *client, pm_message_t state);
int (*resume)(struct i2c_client *client); int (*resume)(struct i2c_client *client);
int (*legacy_probe)(struct i2c_adapter *adapter);
int legacy_class; int legacy_class;
}; };
@ -45,6 +46,11 @@ static int v4l2_i2c_drv_attach_legacy(struct i2c_adapter *adapter, int address,
static int v4l2_i2c_drv_probe_legacy(struct i2c_adapter *adapter) static int v4l2_i2c_drv_probe_legacy(struct i2c_adapter *adapter)
{ {
if (v4l2_i2c_data.legacy_probe) {
if (v4l2_i2c_data.legacy_probe(adapter))
return i2c_probe(adapter, &addr_data, v4l2_i2c_drv_attach_legacy);
return 0;
}
if (adapter->class & v4l2_i2c_data.legacy_class) if (adapter->class & v4l2_i2c_data.legacy_class)
return i2c_probe(adapter, &addr_data, v4l2_i2c_drv_attach_legacy); return i2c_probe(adapter, &addr_data, v4l2_i2c_drv_attach_legacy);
return 0; return 0;

1
include/media/v4l2-i2c-drv.h
View File

@ -29,6 +29,7 @@ struct v4l2_i2c_driver_data {
int (*remove)(struct i2c_client *client); int (*remove)(struct i2c_client *client);
int (*suspend)(struct i2c_client *client, pm_message_t state); int (*suspend)(struct i2c_client *client, pm_message_t state);
int (*resume)(struct i2c_client *client); int (*resume)(struct i2c_client *client);
int (*legacy_probe)(struct i2c_adapter *adapter);
int legacy_class; int legacy_class;
}; };