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path: root/drivers/media/usb/dvb-usb/dvb-usb.h
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Diffstat (limited to 'drivers/media/usb/dvb-usb/dvb-usb.h')
-rw-r--r--drivers/media/usb/dvb-usb/dvb-usb.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/media/usb/dvb-usb/dvb-usb.h b/drivers/media/usb/dvb-usb/dvb-usb.h
index 32829bdd5f22..2eb0e24e8943 100644
--- a/drivers/media/usb/dvb-usb/dvb-usb.h
+++ b/drivers/media/usb/dvb-usb/dvb-usb.h
@@ -129,6 +129,9 @@ struct usb_data_stream_properties {
* @frontend_ctrl: called to power on/off active frontend.
* @streaming_ctrl: called to start and stop the MPEG2-TS streaming of the
* device (not URB submitting/killing).
+ * This callback will be called without data URBs being active - data URBs
+ * will be submitted only after streaming_ctrl(1) returns successfully and
+ * they will be killed before streaming_ctrl(0) gets called.
* @pid_filter_ctrl: called to en/disable the PID filter, if any.
* @pid_filter: called to set/unset a PID for filtering.
* @frontend_attach: called to attach the possible frontends (fill fe-field
@@ -234,6 +237,11 @@ enum dvb_usb_mode {
*
* @size_of_priv: how many bytes shall be allocated for the private field
* of struct dvb_usb_device.
+ * @priv_init: optional callback to initialize the variable that private field
+ * of struct dvb_usb_device has pointer to just after it had been allocated and
+ * zeroed.
+ * @priv_destroy: just like priv_init, only called before deallocating
+ * the memory pointed by private field of struct dvb_usb_device.
*
* @power_ctrl: called to enable/disable power of the device.
* @read_mac_address: called to read the MAC address of the device.
@@ -275,6 +283,8 @@ struct dvb_usb_device_properties {
int no_reconnect;
int size_of_priv;
+ int (*priv_init)(struct dvb_usb_device *);
+ void (*priv_destroy)(struct dvb_usb_device *);
int num_adapters;
struct dvb_usb_adapter_properties adapter[MAX_NO_OF_ADAPTER_PER_DEVICE];