forked from Minki/linux
41b44e35ba
Those ancillary functions could be called even when compiled without V4L2 support, as warned by ktest build robot: All errors (new ones prefixed by >>): >> ERROR: "__v4l2_mc_usb_media_device_init" [drivers/media/usb/dvb-usb/dvb-usb.ko] undefined! >> ERROR: "__v4l2_mc_usb_media_device_init" [drivers/media/usb/dvb-usb-v2/dvb_usb_v2.ko] undefined! >> ERROR: "__v4l2_mc_usb_media_device_init" [drivers/media/usb/au0828/au0828.ko] undefined! Also, there's nothing there that are specific to V4L2. So, move those ancillary functions to MC core. No functional changes. Just function rename. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
127 lines
4.2 KiB
C
127 lines
4.2 KiB
C
/*
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* v4l2-mc.h - Media Controller V4L2 types and prototypes
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*
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* Copyright (C) 2016 Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef _V4L2_MC_H
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#define _V4L2_MC_H
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#include <media/media-device.h>
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/**
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* enum tuner_pad_index - tuner pad index for MEDIA_ENT_F_TUNER
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*
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* @TUNER_PAD_RF_INPUT: Radiofrequency (RF) sink pad, usually linked to a
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* RF connector entity.
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* @TUNER_PAD_OUTPUT: Tuner video output source pad. Contains the video
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* chrominance and luminance or the hole bandwidth
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* of the signal converted to an Intermediate Frequency
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* (IF) or to baseband (on zero-IF tuners).
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* @TUNER_PAD_AUD_OUT: Tuner audio output source pad. Tuners used to decode
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* analog TV signals have an extra pad for audio output.
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* Old tuners use an analog stage with a saw filter for
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* the audio IF frequency. The output of the pad is, in
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* this case, the audio IF, with should be decoded either
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* by the bridge chipset (that's the case of cx2388x
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* chipsets) or may require an external IF sound
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* processor, like msp34xx. On modern silicon tuners,
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* the audio IF decoder is usually incorporated at the
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* tuner. On such case, the output of this pad is an
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* audio sampled data.
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* @TUNER_NUM_PADS: Number of pads of the tuner.
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*/
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enum tuner_pad_index {
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TUNER_PAD_RF_INPUT,
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TUNER_PAD_OUTPUT,
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TUNER_PAD_AUD_OUT,
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TUNER_NUM_PADS
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};
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/**
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* enum if_vid_dec_index - video IF-PLL pad index for
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* MEDIA_ENT_F_IF_VID_DECODER
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*
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* @IF_VID_DEC_PAD_IF_INPUT: video Intermediate Frequency (IF) sink pad
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* @IF_VID_DEC_PAD_OUT: IF-PLL video output source pad. Contains the
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* video chrominance and luminance IF signals.
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* @IF_VID_DEC_PAD_NUM_PADS: Number of pads of the video IF-PLL.
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*/
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enum if_vid_dec_pad_index {
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IF_VID_DEC_PAD_IF_INPUT,
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IF_VID_DEC_PAD_OUT,
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IF_VID_DEC_PAD_NUM_PADS
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};
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/**
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* enum if_aud_dec_index - audio/sound IF-PLL pad index for
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* MEDIA_ENT_F_IF_AUD_DECODER
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*
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* @IF_AUD_DEC_PAD_IF_INPUT: audio Intermediate Frequency (IF) sink pad
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* @IF_AUD_DEC_PAD_OUT: IF-PLL audio output source pad. Contains the
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* audio sampled stream data, usually connected
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* to the bridge bus via an Inter-IC Sound (I2S)
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* bus.
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* @IF_AUD_DEC_PAD_NUM_PADS: Number of pads of the audio IF-PLL.
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*/
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enum if_aud_dec_pad_index {
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IF_AUD_DEC_PAD_IF_INPUT,
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IF_AUD_DEC_PAD_OUT,
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IF_AUD_DEC_PAD_NUM_PADS
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};
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/**
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* enum demod_pad_index - analog TV pad index for MEDIA_ENT_F_ATV_DECODER
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*
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* @DEMOD_PAD_IF_INPUT: IF input sink pad.
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* @DEMOD_PAD_VID_OUT: Video output source pad.
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* @DEMOD_PAD_VBI_OUT: Vertical Blank Interface (VBI) output source pad.
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* @DEMOD_NUM_PADS: Maximum number of output pads.
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*/
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enum demod_pad_index {
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DEMOD_PAD_IF_INPUT,
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DEMOD_PAD_VID_OUT,
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DEMOD_PAD_VBI_OUT,
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DEMOD_NUM_PADS
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};
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/* We don't need to include pci.h or usb.h here */
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struct pci_dev;
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struct usb_device;
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#ifdef CONFIG_MEDIA_CONTROLLER
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/**
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* v4l2_mc_create_media_graph() - create Media Controller links at the graph.
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*
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* @mdev: pointer to the &media_device struct.
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*
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* Add links between the entities commonly found on PC customer's hardware at
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* the V4L2 side: camera sensors, audio and video PLL-IF decoders, tuners,
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* analog TV decoder and I/O entities (video, VBI and Software Defined Radio).
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* NOTE: webcams are modelled on a very simple way: the sensor is
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* connected directly to the I/O entity. All dirty details, like
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* scaler and crop HW are hidden. While such mapping is enough for v4l2
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* interface centric PC-consumer's hardware, V4L2 subdev centric camera
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* hardware should not use this routine, as it will not build the right graph.
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*/
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int v4l2_mc_create_media_graph(struct media_device *mdev);
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#else
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static inline int v4l2_mc_create_media_graph(struct media_device *mdev)
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{
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return 0;
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}
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#endif
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#endif
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