1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _VIDEOBUF2_DVB_H_
3 #define	_VIDEOBUF2_DVB_H_
4 
5 #include <media/dvbdev.h>
6 #include <media/dmxdev.h>
7 #include <media/dvb_demux.h>
8 #include <media/dvb_net.h>
9 #include <media/dvb_frontend.h>
10 #include <media/videobuf2-v4l2.h>
11 
12 /* We don't actually need to include media-device.h here */
13 struct media_device;
14 
15 /*
16  * TODO: This header file should be replaced with videobuf2-core.h
17  * Currently, vb2_thread is not a stuff of videobuf2-core,
18  * since vb2_thread has many dependencies on videobuf2-v4l2.
19  */
20 
21 struct vb2_dvb {
22 	/* filling that the job of the driver */
23 	char			*name;
24 	struct dvb_frontend	*frontend;
25 	struct vb2_queue	dvbq;
26 
27 	/* vb2-dvb state info */
28 	struct mutex		lock;
29 	int			nfeeds;
30 
31 	/* vb2_dvb_(un)register manages this */
32 	struct dvb_demux	demux;
33 	struct dmxdev		dmxdev;
34 	struct dmx_frontend	fe_hw;
35 	struct dmx_frontend	fe_mem;
36 	struct dvb_net		net;
37 };
38 
39 struct vb2_dvb_frontend {
40 	struct list_head felist;
41 	int id;
42 	struct vb2_dvb dvb;
43 };
44 
45 struct vb2_dvb_frontends {
46 	struct list_head felist;
47 	struct mutex lock;
48 	struct dvb_adapter adapter;
49 	int active_fe_id; /* Indicates which frontend in the felist is in use */
50 	int gate; /* Frontend with gate control 0=!MFE,1=fe0,2=fe1 etc */
51 };
52 
53 int vb2_dvb_register_bus(struct vb2_dvb_frontends *f,
54 			 struct module *module,
55 			 void *adapter_priv,
56 			 struct device *device,
57 			 struct media_device *mdev,
58 			 short *adapter_nr,
59 			 int mfe_shared);
60 
61 void vb2_dvb_unregister_bus(struct vb2_dvb_frontends *f);
62 
63 struct vb2_dvb_frontend *vb2_dvb_alloc_frontend(struct vb2_dvb_frontends *f, int id);
64 void vb2_dvb_dealloc_frontends(struct vb2_dvb_frontends *f);
65 
66 struct vb2_dvb_frontend *vb2_dvb_get_frontend(struct vb2_dvb_frontends *f, int id);
67 int vb2_dvb_find_frontend(struct vb2_dvb_frontends *f, struct dvb_frontend *p);
68 
69 #endif			/* _VIDEOBUF2_DVB_H_ */
70