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1 | /* |
2 | * v4l2-mc.h - Media Controller V4L2 types and prototypes | |
3 | * | |
4 | * Copyright (C) 2016 Mauro Carvalho Chehab <mchehab@osg.samsung.com> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | */ | |
16 | ||
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17 | #include <media/media-device.h> |
18 | ||
6aad127d MCC |
19 | /** |
20 | * enum tuner_pad_index - tuner pad index for MEDIA_ENT_F_TUNER | |
21 | * | |
22 | * @TUNER_PAD_RF_INPUT: Radiofrequency (RF) sink pad, usually linked to a | |
23 | * RF connector entity. | |
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24 | * @TUNER_PAD_OUTPUT: Tuner video output source pad. Contains the video |
25 | * chrominance and luminance or the hole bandwidth | |
26 | * of the signal converted to an Intermediate Frequency | |
27 | * (IF) or to baseband (on zero-IF tuners). | |
28 | * @TUNER_PAD_AUD_OUT: Tuner audio output source pad. Tuners used to decode | |
29 | * analog TV signals have an extra pad for audio output. | |
30 | * Old tuners use an analog stage with a saw filter for | |
31 | * the audio IF frequency. The output of the pad is, in | |
32 | * this case, the audio IF, with should be decoded either | |
33 | * by the bridge chipset (that's the case of cx2388x | |
34 | * chipsets) or may require an external IF sound | |
35 | * processor, like msp34xx. On modern silicon tuners, | |
36 | * the audio IF decoder is usually incorporated at the | |
37 | * tuner. On such case, the output of this pad is an | |
38 | * audio sampled data. | |
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39 | * @TUNER_NUM_PADS: Number of pads of the tuner. |
40 | */ | |
41 | enum tuner_pad_index { | |
42 | TUNER_PAD_RF_INPUT, | |
43 | TUNER_PAD_OUTPUT, | |
5c9077ea | 44 | TUNER_PAD_AUD_OUT, |
6aad127d | 45 | TUNER_NUM_PADS |
5c9077ea | 46 | }; |
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47 | |
48 | /** | |
49 | * enum if_vid_dec_index - video IF-PLL pad index for | |
50 | * MEDIA_ENT_F_IF_VID_DECODER | |
51 | * | |
52 | * @IF_VID_DEC_PAD_IF_INPUT: video Intermediate Frequency (IF) sink pad | |
53 | * @IF_VID_DEC_PAD_OUT: IF-PLL video output source pad. Contains the | |
54 | * video chrominance and luminance IF signals. | |
55 | * @IF_VID_DEC_PAD_NUM_PADS: Number of pads of the video IF-PLL. | |
56 | */ | |
57 | enum if_vid_dec_pad_index { | |
58 | IF_VID_DEC_PAD_IF_INPUT, | |
59 | IF_VID_DEC_PAD_OUT, | |
60 | IF_VID_DEC_PAD_NUM_PADS | |
61 | }; | |
62 | ||
63 | /** | |
64 | * enum if_aud_dec_index - audio/sound IF-PLL pad index for | |
65 | * MEDIA_ENT_F_IF_AUD_DECODER | |
66 | * | |
67 | * @IF_AUD_DEC_PAD_IF_INPUT: audio Intermediate Frequency (IF) sink pad | |
68 | * @IF_AUD_DEC_PAD_OUT: IF-PLL audio output source pad. Contains the | |
69 | * audio sampled stream data, usually connected | |
70 | * to the bridge bus via an Inter-IC Sound (I2S) | |
71 | * bus. | |
72 | * @IF_AUD_DEC_PAD_NUM_PADS: Number of pads of the audio IF-PLL. | |
73 | */ | |
74 | enum if_aud_dec_pad_index { | |
75 | IF_AUD_DEC_PAD_IF_INPUT, | |
76 | IF_AUD_DEC_PAD_OUT, | |
77 | IF_AUD_DEC_PAD_NUM_PADS | |
78 | }; | |
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79 | |
80 | /** | |
81 | * enum demod_pad_index - analog TV pad index for MEDIA_ENT_F_ATV_DECODER | |
82 | * | |
83 | * @DEMOD_PAD_IF_INPUT: IF input sink pad. | |
84 | * @DEMOD_PAD_VID_OUT: Video output source pad. | |
85 | * @DEMOD_PAD_VBI_OUT: Vertical Blank Interface (VBI) output source pad. | |
86 | * @DEMOD_NUM_PADS: Maximum number of output pads. | |
87 | */ | |
88 | enum demod_pad_index { | |
89 | DEMOD_PAD_IF_INPUT, | |
90 | DEMOD_PAD_VID_OUT, | |
91 | DEMOD_PAD_VBI_OUT, | |
92 | DEMOD_NUM_PADS | |
93 | }; | |
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94 | |
95 | /** | |
96 | * v4l2_mc_create_media_graph() - create Media Controller links at the graph. | |
97 | * | |
98 | * @mdev: pointer to the &media_device struct. | |
99 | * | |
100 | * Add links between the entities commonly found on PC customer's hardware at | |
101 | * the V4L2 side: camera sensors, audio and video PLL-IF decoders, tuners, | |
102 | * analog TV decoder and I/O entities (video, VBI and Software Defined Radio). | |
103 | * NOTE: webcams are modelled on a very simple way: the sensor is | |
104 | * connected directly to the I/O entity. All dirty details, like | |
105 | * scaler and crop HW are hidden. While such mapping is enough for v4l2 | |
106 | * interface centric PC-consumer's hardware, V4L2 subdev centric camera | |
107 | * hardware should not use this routine, as it will not build the right graph. | |
108 | */ | |
109 | #ifdef CONFIG_MEDIA_CONTROLLER | |
110 | int v4l2_mc_create_media_graph(struct media_device *mdev); | |
111 | #else | |
112 | static inline int v4l2_mc_create_media_graph(struct media_device *mdev) | |
113 | { | |
114 | return 0; | |
115 | } | |
116 | #endif |