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/linux/drivers/usb/gadget/function/
H A Duvc_video.c29 uvc_video_encode_header(struct uvc_video *video, struct uvc_buffer *buf, in uvc_video_encode_header() argument
32 struct uvc_device *uvc = container_of(video, struct uvc_device, video); in uvc_video_encode_header()
37 data[1] = UVC_STREAM_EOH | video->fid; in uvc_video_encode_header()
39 if (video->queue.flags & UVC_QUEUE_DROP_INCOMPLETE) in uvc_video_encode_header()
42 if (video->queue.buf_used == 0 && ts.tv_sec) { in uvc_video_encode_header()
66 if (buf->bytesused - video->queue.buf_used <= len - pos) in uvc_video_encode_header()
73 uvc_video_encode_data(struct uvc_video *video, struct uvc_buffer *buf, in uvc_video_encode_data() argument
76 struct uvc_video_queue *queue = &video->queue; in uvc_video_encode_data()
91 uvc_video_encode_bulk(struct usb_request *req, struct uvc_video *video, in uvc_video_encode_bulk() argument
96 int len = video->req_size; in uvc_video_encode_bulk()
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H A Duvc_v4l2.c149 struct uvc_video *video = &uvc->video; in find_closest_frame_by_size() local
184 uvcg_dbg(&video->uvc->func, "Unsupported size %ux%u\n", rw, rh); in find_closest_frame_by_size()
233 struct uvc_video *video = &uvc->video; in uvc_v4l2_get_format() local
235 fmt->fmt.pix.pixelformat = video->fcc; in uvc_v4l2_get_format()
236 fmt->fmt.pix.width = video->width; in uvc_v4l2_get_format()
237 fmt->fmt.pix.height = video->height; in uvc_v4l2_get_format()
239 fmt->fmt.pix.bytesperline = video->bpp * video->width / 8; in uvc_v4l2_get_format()
240 fmt->fmt.pix.sizeimage = video->imagesize; in uvc_v4l2_get_format()
252 struct uvc_video *video = &uvc->video; in uvc_v4l2_try_format() local
258 if (fmt->type != video->queue.queue.type) in uvc_v4l2_try_format()
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/linux/drivers/media/platform/nuvoton/
H A Dnpcm-video.c210 static unsigned int npcm_video_ece_get_ed_size(struct npcm_video *video, in npcm_video_ece_get_ed_size() argument
213 struct regmap *ece = video->ece.regmap; in npcm_video_ece_get_ed_size()
222 dev_warn(video->dev, "Wait for ECE_DDA_STS_CDREADY timeout\n"); in npcm_video_ece_get_ed_size()
230 dev_dbg(video->dev, "offset = %u, ed_size = %u, gap = %u\n", offset, in npcm_video_ece_get_ed_size()
236 static void npcm_video_ece_enc_rect(struct npcm_video *video, in npcm_video_ece_enc_rect() argument
240 struct regmap *ece = video->ece.regmap; in npcm_video_ece_enc_rect()
241 unsigned int rect_offset = (r_off_y * video->bytesperline) + (r_off_x * 2); in npcm_video_ece_enc_rect()
270 static unsigned int npcm_video_ece_read_rect_offset(struct npcm_video *video) in npcm_video_ece_read_rect_offset() argument
272 struct regmap *ece = video->ece.regmap; in npcm_video_ece_read_rect_offset()
283 static void npcm_video_ece_set_lp(struct npcm_video *video, unsigned int pitch) in npcm_video_ece_set_lp() argument
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/linux/drivers/media/platform/renesas/vsp1/
H A Dvsp1_video.c63 static int vsp1_video_verify_format(struct vsp1_video *video) in vsp1_video_verify_format() argument
71 subdev = vsp1_video_remote_subdev(&video->pad, &fmt.pad); in vsp1_video_verify_format()
79 if (video->rwpf->fmtinfo->mbus != fmt.format.code || in vsp1_video_verify_format()
80 video->rwpf->format.height != fmt.format.height || in vsp1_video_verify_format()
81 video->rwpf->format.width != fmt.format.width) { in vsp1_video_verify_format()
82 dev_dbg(video->vsp1->dev, in vsp1_video_verify_format()
84 video->rwpf->fmtinfo->mbus, video->rwpf->format.width, in vsp1_video_verify_format()
85 video->rwpf->format.height, fmt.format.code, in vsp1_video_verify_format()
93 static int __vsp1_video_try_format(struct vsp1_video *video, in __vsp1_video_try_format() argument
125 info = vsp1_get_format_info(video->vsp1, pix->pixelformat); in __vsp1_video_try_format()
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/linux/drivers/acpi/
H A Dacpi_video.c196 struct acpi_video_bus *video; member
204 static void acpi_video_device_rebind(struct acpi_video_bus *video);
205 static void acpi_video_device_bind(struct acpi_video_bus *video,
207 static int acpi_video_device_enumerate(struct acpi_video_bus *video);
252 struct acpi_video_device *video = cooling_dev->devdata; in video_get_max_state() local
254 *state = video->brightness->count - ACPI_VIDEO_FIRST_LEVEL - 1; in video_get_max_state()
261 struct acpi_video_device *video = cooling_dev->devdata; in video_get_cur_state() local
265 if (acpi_video_device_lcd_get_level_current(video, &level, false)) in video_get_cur_state()
267 for (offset = ACPI_VIDEO_FIRST_LEVEL; offset < video->brightness->count; in video_get_cur_state()
269 if (level == video->brightness->levels[offset]) { in video_get_cur_state()
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/linux/drivers/media/pci/mgb4/
H A Dmgb4_vin.c117 config = mgb4_read_reg(&voutdev->mgbdev->video, in loopback_dev()
147 struct mgb4_regs *video = &vindev->mgbdev->video; in set_loopback_padding() local
154 mgb4_write_reg(video, voutdev->config->regs.padding, in set_loopback_padding()
162 struct mgb4_regs *video = &vindev->mgbdev->video; in get_timings() local
165 u32 status = mgb4_read_reg(video, regs->status); in get_timings()
166 u32 pclk = mgb4_read_reg(video, regs->pclk); in get_timings()
167 u32 hsync = mgb4_read_reg(video, regs->hsync); in get_timings()
168 u32 vsync = mgb4_read_reg(video, regs->vsync); in get_timings()
169 u32 resolution = mgb4_read_reg(video, regs->resolution); in get_timings()
214 struct mgb4_regs *video = &vindev->mgbdev->video; in queue_setup() local
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H A Dmgb4_vout.c72 struct mgb4_regs *video = &voutdev->mgbdev->video; in get_timings() local
75 u32 hsync = mgb4_read_reg(video, regs->hsync); in get_timings()
76 u32 vsync = mgb4_read_reg(video, regs->vsync); in get_timings()
77 u32 resolution = mgb4_read_reg(video, regs->resolution); in get_timings()
115 struct mgb4_regs *video = &voutdev->mgbdev->video; in queue_setup() local
116 u32 config = mgb4_read_reg(video, voutdev->config->regs.config); in queue_setup()
151 struct mgb4_regs *video = &voutdev->mgbdev->video; in buffer_prepare() local
152 u32 config = mgb4_read_reg(video, voutdev->config->regs.config); in buffer_prepare()
189 mgb4_mask_reg(&mgbdev->video, voutdev->config->regs.config, 0x2, 0x0); in stop_streaming()
190 mgb4_write_reg(&mgbdev->video, voutdev->config->regs.padding, 0); in stop_streaming()
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H A Dmgb4_io.h34 static inline bool has_yuv_and_timeperframe(struct mgb4_regs *video) in has_yuv_and_timeperframe() argument
36 u32 status = mgb4_read_reg(video, 0xD0); in has_yuv_and_timeperframe()
41 #define has_yuv(video) has_yuv_and_timeperframe(video) argument
42 #define has_timeperframe(video) has_yuv_and_timeperframe(video) argument
/linux/Documentation/devicetree/bindings/media/xilinx/
H A Dvideo.txt1 DT bindings for Xilinx video IP cores
4 Xilinx video IP cores process video streams by acting as video sinks and/or
6 creating a video pipeline.
8 Each video IP core is represented by an AMBA bus child node in the device
10 cores are represented as defined in ../video-interfaces.txt.
13 tree using bindings documented in ./xlnx,video.txt.
18 The following properties are common to all Xilinx video IP cores.
20 - xlnx,video-format: This property represents a video format transmitted on an
21 AXI bus between video IP cores, using its VF code as defined in "AXI4-Stream
25 - xlnx,video-width: This property qualifies the video format with the sample
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H A Dxlnx,v-tpg.txt16 - clocks: Reference to the video core clock.
18 - xlnx,video-format, xlnx,video-width: Video format and width, as defined in
19 video.txt.
21 - port: Video port, using the DT bindings defined in ../video-interfaces.txt.
27 video timings for the TPG test patterns.
31 video timings.
53 xlnx,video-format = <XVIP_VF_YUV_422>;
54 xlnx,video-width = <8>;
63 xlnx,video-format = <XVIP_VF_YUV_422>;
64 xlnx,video-width = <8>;
H A Dxlnx,video.txt7 Xilinx video IP pipeline processes video streams through one or more Xilinx
8 video IP cores. Each video IP core is represented as documented in video.txt
11 mappings between DMAs and the video IP cores.
15 - compatible: Must be "xlnx,video".
22 - ports: Video port, using the DT bindings defined in ../video-interfaces.txt.
32 compatible = "xlnx,video";
/linux/Documentation/userspace-api/media/v4l/
H A Ddv-timings.rst10 The video standards discussed so far have been dealing with Analog TV
11 and the corresponding video timings. Today there are many more different
13 DVI connectors etc., that carry video signals and there is a need to
14 extend the API to select the video timings for these interfaces. Since
17 set/get video timings at the input and output.
19 These ioctls deal with the detailed digital video timings that define
20 each video format. This includes parameters such as the active video
34 the DV timings as seen by the video receiver applications use the
37 When the hardware detects a video source change (e.g. the video
38 signal appears or disappears, or the video resolution changes), then
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H A Dvidioc-g-output.rst13 VIDIOC_G_OUTPUT - VIDIOC_S_OUTPUT - Query or select the current video output
38 To query the current video output applications call the
42 fail only when there are no video outputs, returning the ``EINVAL`` error
45 To select a video output applications store the number of the desired
48 may support different video standards, so the driver may implicitly
53 Information about video outputs is available using the
64 The number of the video output is out of bounds, or there are no
65 video outputs at all.
H A Dstandard.rst10 Video devices typically support one or more different video standards or
11 variations of standards. Each video input and output may support another
18 V4L2 defines one bit for each analog video standard currently in use
20 hybrid standards to watch NTSC video tapes on PAL TVs and vice versa.
39 To query and select the standard used by the current video input or
49 index into the standard enumeration. Drivers must implement all video
50 standard ioctls when the device has one or more video inputs or outputs.
53 video standards makes little sense. More generally for any capture or
57 video standard, or
59 - that does not support the video standard formats at all.
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H A Ddev-capture.rst10 Video capture devices sample an analog video signal and store the
15 Conventionally V4L2 video capture devices are accessed through character
16 device special files named ``/dev/video`` and ``/dev/video0`` to
18 ``/dev/video`` is typically a symbolic link to the preferred video
21 .. note:: The same device file names are used for video output devices.
26 Devices supporting the video capture interface set the
31 functions they may also support the :ref:`video overlay <overlay>`
44 :ref:`video input <video>` ioctls must be supported by all video
51 format parameters. The former select an area of the video picture to
99 A video capture device may support the :ref:`read() function <func-read>`
H A Dvidioc-enumoutput.rst13 VIDIOC_ENUMOUTPUT - Enumerate video outputs
34 To query the attributes of a video outputs applications initialize the
56 - Name of the video output, a NUL-terminated ASCII string, for
64 - Drivers can enumerate up to 32 video and audio outputs. This field
66 this was the currently selected video output. It is a bit mask.
86 - Every video output supports one or more different video standards.
88 video standards and how to switch see :ref:`standard`.
113 - Any non-modulator video output, for example Composite Video,
118 - The video output will be copied to a :ref:`video overlay <overlay>`.
132 - This output supports setting video timings by using
H A Ddev-output.rst10 Video output devices encode stills or image sequences as analog video
14 Conventionally V4L2 video output devices are accessed through character
15 device special files named ``/dev/video`` and ``/dev/video0`` to
17 ``/dev/video`` is typically a symbolic link to the preferred video
20 .. note:: The same device file names are used also for video capture devices.
25 Devices supporting the video output interface set the
42 :ref:`video output <video>` ioctls must be supported by all video
49 former select an area of the video picture where the image will appear,
96 A video output device may support the :ref:`write() function <rw>`
H A Dvidioc-querystd.rst13 VIDIOC_QUERYSTD - VIDIOC_SUBDEV_QUERYSTD - Sense the video standard received by the current input
38 The hardware may be able to detect the current video standard
45 the set must contain all standards supported by the current video input
50 Drivers shall *not* switch the video standard
51 automatically if a new video standard is detected. Instead, drivers
54 :ref:`VIDIOC_QUERYSTD`. The reason is that a new video standard can mean
57 will have to call :ref:`VIDIOC_QUERYSTD`, and if the detected video
69 Standard video timings are not supported for this input or output.
/linux/drivers/media/pci/tw686x/
H A DKconfig3 tristate "Intersil/Techwell TW686x video capture cards"
13 - TW6864 (4 video channels),
14 - TW6865 (4 video channels, not tested, second generation chip),
15 - TW6868 (8 video channels but only 4 first channels using
16 built-in video decoder are supported, not tested),
17 - TW6869 (8 video channels, second generation chip).
/linux/Documentation/userspace-api/media/mediactl/
H A Dmedia-types.rst95 - Camera video sensor entity.
104 - Analog video decoder, the basic function of the video decoder is
105 to accept analogue video from a wide variety of sources such as
106 broadcast, DVD players, cameras and video cassette recorders, in
109 some digital video standard, with appropriate timing signals.
115 internally IF-PLL decoders for audio and video, but older models
119 - IF-PLL video decoder. It receives the IF from a PLL and decodes
120 the analog TV video signal. This is commonly found on some very
130 tuner PLL and should be controlled together with the IF-PLL video
143 - Video composer (blender). An entity capable of video
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/linux/drivers/video/fbdev/matrox/
H A Dmatroxfb_crtc2.c180 pos += m2info->video.offbase; in matroxfb_dh_pan_var()
205 vramlen = m2info->video.len_usable; in matroxfb_dh_decode_var()
304 fix->smem_start = m2info->video.base; in matroxfb_dh_init_fix()
305 fix->smem_len = m2info->video.len_usable; in matroxfb_dh_init_fix()
337 m2info->fbcon.screen_base = vaddr_va(m2info->video.vbase); in matroxfb_dh_set_par()
355 pos += m2info->video.offbase; in matroxfb_dh_set_par()
614 if (minfo->video.len_usable + mem <= minfo->video.len) in matroxfb_dh_regit()
615 m2info->video.offbase = minfo->video.len - mem; in matroxfb_dh_regit()
616 else if (minfo->video.len < mem) { in matroxfb_dh_regit()
619 m2info->video.borrowed = mem; in matroxfb_dh_regit()
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/linux/Documentation/admin-guide/media/
H A Dfimc.rst32 instance to any parallel video input or any MIPI-CSI front-end);
62 Memory-to-memory video node
65 V4L2 memory-to-memory interface at /dev/video? device node. This is standalone
66 video device, it has no media pads. However please note the mem-to-mem and
67 capture video node operation on same FIMC instance is not allowed. The driver
71 Capture video node
77 At the capture and mem-to-mem video nodes only the multi-planar API is
95 sensor subdev -> mipi-csi subdev -> fimc subdev -> video node
98 configuration flow must be from left to right, and the video node is
102 devices belonging to the pipeline is done at the video node driver.
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/linux/drivers/video/fbdev/
H A Dxen-fbfront.c64 static int video[KPARAM_CNT] = { 2, XENFB_WIDTH, XENFB_HEIGHT }; variable
65 module_param_array(video, int, NULL, 0);
66 MODULE_PARM_DESC(video,
252 if (var->xres == video[KPARAM_WIDTH] && in xenfb_check_var()
253 var->yres == video[KPARAM_HEIGHT] && in xenfb_check_var()
261 if (var->xres > video[KPARAM_WIDTH] || var->yres > video[KPARAM_HEIGHT]) in xenfb_check_var()
359 if (val < video[KPARAM_MEM]) in xenfb_probe()
360 video[KPARAM_MEM] = val; in xenfb_probe()
363 video[KPARAM_WIDTH] = xenbus_read_unsigned(dev->otherend, "width", in xenfb_probe()
364 video[KPARAM_WIDTH]); in xenfb_probe()
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/linux/Documentation/fb/
H A Duvesafb.rst2 uvesafb - A Generic Driver for VBE2+ compliant video cards
8 uvesafb should work with any video card that has a Video BIOS compliant
32 uvesafb is a _generic_ driver which supports a wide variety of video
37 - A strict and limited set of supported video modes. Often the native
40 video mode you want to use. This can be especially painful with
41 widescreen panels, where native video modes don't have the 4:3 aspect
54 video=uvesafb:1024x768-32,mtrr:3,ywrap (compiled into the kernel)
63 video memory, console scrolling is done by changing the
68 the video memory (i.e. starts reading from top if it
69 reaches the end of video memory). Faster than ypan.
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H A Dep93xx-fb.rst7 can use the standard Linux video mode database. In your board file::
14 If you have an embedded LCD display then you need to define a video
48 to configure the controller. The video attributes flags are fully
102 Setting the video mode
105 The video mode is set using the following syntax::
107 video=XRESxYRES[-BPP][@REFRESH]
109 If the EP93xx video driver is built-in then the video mode is set on
112 video=ep93xx-fb:800x600-16@60
114 If the EP93xx video driver is built as a module then the video mode is
117 modprobe ep93xx-fb video=320x240

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