- 17 Jun, 2021 1 commit
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Mauro Carvalho Chehab authored
As warned by smatch: drivers/media/dvb-core/dvb_ca_en50221.c:1392 dvb_ca_en50221_io_do_ioctl() warn: potential spectre issue 'ca->slot_info' [r] (local cap) There's a potential of using a CAM ioctl for speculation. The risk here is minimum, as only a small subset of DVB boards have CI, with a CAM module installed. Also, exploiting it would require a user capable of starting a DVB application. There are probably a lot of easier ways to try to exploit. Yet, it doesn't harm addressing it. Signed-off-by:Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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- 16 Jun, 2021 4 commits
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Mauro Carvalho Chehab authored
The :doc:`foo` tag is auto-generated via automarkup.py. So, use the filename at the sources, instead of :doc:`foo`. Signed-off-by: -
Mauro Carvalho Chehab authored
The :doc:`foo` tag is auto-generated via automarkup.py. So, use the filename at the sources, instead of :doc:`foo`. Signed-off-by: -
Mauro Carvalho Chehab authored
The :doc:`foo` tag is auto-generated via automarkup.py. So, use the filename at the sources, instead of :doc:`foo`. Signed-off-by: -
Mauro Carvalho Chehab authored
The :doc:`foo` tag is auto-generated via automarkup.py. So, use the filename at the sources, instead of :doc:`foo`. Signed-off-by:
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- 11 Jun, 2021 1 commit
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Benjamin Drung authored
The Elgato Cam Link 4K HDMI video capture card reports to support three different pixel formats, where the first format depends on the connected HDMI device. ``` $ v4l2-ctl -d /dev/video0 --list-formats-ext ioctl: VIDIOC_ENUM_FMT Type: Video Capture [0]: 'NV12' (Y/CbCr 4:2:0) Size: Discrete 3840x2160 Interval: Discrete 0.033s (29.970 fps) [1]: 'NV12' (Y/CbCr 4:2:0) Size: Discrete 3840x2160 Interval: Discrete 0.033s (29.970 fps) [2]: 'YU12' (Planar YUV 4:2:0) Size: Discrete 3840x2160 Interval: Discrete 0.033s (29.970 fps) ``` Changing the pixel format to anything besides the first pixel format does not work: ``` $ v4l2-ctl -d /dev/video0 --try-fmt-video pixelformat=YU12 Format Video Capture: Width/Height : 3840/2160 Pixel Format : 'NV12' (Y/CbCr 4:2:0) Field : None Bytes per Line : 3840 Size Image : 12441600 Colorspace : sRGB Transfer Function : Rec. 709 YCbCr/HSV Encoding: Rec. 709 Quantization : Default (maps to Limited Range) Flags : ``` User space applications like VLC might show an error message on the terminal in that case: ``` libv4l2: error set_fmt gave us a different result than try_fmt! ``` Depending on the error handling of the user space applications, they might display a distorted video, because they use the wrong pixel format for decoding the stream. The Elgato Cam Link 4K responds to the USB video probe VS_PROBE_CONTROL/VS_COMMIT_CONTROL with a malformed data structure: The second byte contains bFormatIndex (instead of being the second byte of bmHint). The first byte is always zero. The third byte is always 1. The firmware bug was reported to Elgato on 2020-12-01 and it was forwarded by the support team to the developers as feature request. There is no firmware update available since then. The latest firmware for Elgato Cam Link 4K as of 2021-03-23 has MCU 20.02.19 and FPGA 67. Therefore correct the malformed data structure for this device. The change was successfully tested with VLC, OBS, and Chromium using different pixel formats (YUYV, NV12, YU12), resolutions (3840x2160, 1920x1080), and frame rates (29.970 and 59.940 fps). Cc: stable@vger.kernel.org Signed-off-by:
Benjamin Drung <bdrung@posteo.de> Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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- 09 Jun, 2021 1 commit
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Mauro Carvalho Chehab authored
While the logic there is right, it tricks static check analyzers, like smatch: drivers/media/dvb-core/dmxdev.c:729 dvb_dmxdev_filter_start() error: we previously assumed '*secfeed' could be null (see line 719) Because the implementation of the filter itself is made via a callback, with its real implementation at the dvbdmx_allocate_section_feed() inside dvb_demux.c. So, change the check logic to make it clear that the function will not try to use *secfeed == NULL. Signed-off-by:
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- 08 Jun, 2021 33 commits
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Benjamin Gaignard authored
Add variant to IMX8M to enable G2/HEVC codec. Define the capabilities for the hardware up to 3840x2160. G2 doesn't have a postprocessor, uses the same clocks and has it own interrupt. Signed-off-by:
Benjamin Gaignard <benjamin.gaignard@collabora.com> Reviewed-by:
Philipp Zabel <p.zabel@pengutronix.de> Reviewed-by:
Ezequiel Garcia <ezequiel@collabora.com> Signed-off-by:
Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by:
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Benjamin Gaignard authored
Implement all the logic to get G2 hardware decoding HEVC frames. It supports up level 5.1 HEVC stream. It doesn't support yet 10 bits formats or the scaling feature. Add HANTRO HEVC dedicated control to skip some bits at the beginning of the slice header. That is very specific to this hardware so can't go into uapi structures. Computing the needed value is complex and requires information from the stream that only the userland knows so let it provide the correct value to the driver. Signed-off-by:
Adrian Ratiu <adrian.ratiu@collabora.com> Signed-off-by:
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Benjamin Gaignard authored
Make sure that V4L2_PIX_FMT_HEVC_SLICE is correctly handled by the driver. Signed-off-by:
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Benjamin Gaignard authored
The HEVC HANTRO driver needs to know the number of bits to skip at the beginning of the slice header. That is a hardware specific requirement so create a dedicated control for this purpose. Signed-off-by:
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Benjamin Gaignard authored
If the variant doesn't support postprocessed formats make sure it will be ok. Signed-off-by:
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Benjamin Gaignard authored
Define which HEVC profiles (up to level 5.1) and features (no scaling, no 10 bits) are supported by the driver. Signed-off-by:
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Benjamin Gaignard authored
Change hantro_codec_ops run prototype from 'void' to 'int'. This allows the driver to cancel the job if an error occurs while configuring the hardware. Signed-off-by:
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Benjamin Gaignard authored
Add decode params control and the associated structure to group all the information that are needed to decode a reference frame as is described in ITU-T Rec. H.265 section "8.3.2 Decoding process for reference picture set". Adapt Cedrus driver to these changes. Signed-off-by:
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Benjamin Gaignard authored
Add fields and flags as they are defined in 7.4.3.3.1 "General picture parameter set RBSP semantics of the H.265 ITU specification. Signed-off-by:
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Zhen Lei authored
Use DEVICE_ATTR_RW() helper macro instead of DEVICE_ATTR(), which is simpler and more readable. Due to the names of the read and write functions of the sysfs attribute is normalized, there is a natural association. Signed-off-by:
Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by:
Sean Young <sean@mess.org> Signed-off-by:
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Alexander Voronov authored
This is an NEC remote control device shipped with some Toshiba TVs. Signed-off-by:
Alexander Voronov <avv.0@ya.ru> Signed-off-by:
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Evgeny Novikov authored
Hadle errors of clk_prepare_enable() in st_rc_hardware_init() and its callers. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Evgeny Novikov <novikov@ispras.ru> Signed-off-by:
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Sean Young authored
The dvb_usb_device_properties can be const. This makes it clear that the static can be shared across threads. Signed-off-by:
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Dongliang Mu authored
When the driver fails to talk with the hardware with dvb_usb_generic_rw, it will return an error to dvb_usb_adapter_frontend_init. However, the driver forgets to free the resource (e.g., struct cinergyt2_fe_state), which leads to a memory leak. Fix this by freeing struct cinergyt2_fe_state when dvb_usb_generic_rw fails in cinergyt2_frontend_attach. backtrace: [<0000000056e17b1a>] kmalloc include/linux/slab.h:552 [inline] [<0000000056e17b1a>] kzalloc include/linux/slab.h:682 [inline] [<0000000056e17b1a>] cinergyt2_fe_attach+0x21/0x80 drivers/media/usb/dvb-usb/cinergyT2-fe.c:271 [<00000000ae0b1711>] cinergyt2_frontend_attach+0x21/0x70 drivers/media/usb/dvb-usb/cinergyT2-core.c:74 [<00000000d0254861>] dvb_usb_adapter_frontend_init+0x11b/0x1b0 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:290 [<0000000002e08ac6>] dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:84 [inline] [<0000000002e08ac6>] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:173 [inline] [<0000000002e08ac6>] dvb_usb_device_init.cold+0x4d0/0x6ae drivers/media/usb/dvb-usb/dvb-usb-init.c:287 Reported-by: syzbot+e1de8986786b3722050e@syzkaller.appspotmail.com Signed-off-by:
Dongliang Mu <mudongliangabcd@gmail.com> Signed-off-by:
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Christophe JAILLET authored
Fix some erroneous function names in some error messages. Remove some spurious or useless trailing and leading character in some messages. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
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Colin Ian King authored
Don't populate the const array fw_hdr on the stack but instead it static. Makes the object code smaller by 5 bytes: Before: text data bss dec hex filename 31948 12072 64 44084 ac34 drivers/media/dvb-frontends/mxl692.o After: text data bss dec hex filename 31879 12136 64 44079 ac2f drivers/media/dvb-frontends/mxl692.o (gcc version 10.3.0) Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Eugen Hristev authored
Add XISC driver and binding files to the ISC driver entry. Signed-off-by:
Eugen Hristev <eugen.hristev@microchip.com> Signed-off-by:
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Eugen Hristev authored
ISC driver was converted to yaml. Update maintainers file. Signed-off-by:
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Eugen Hristev authored
Add driver for the extended variant of the isc, the microchip XISC present on sama7g5 product. [hverkuil: drop MODULE_SUPPORTED_DEVICE, no longer exists] [hverkuil: made isc_sama7g5_config_csc et al static] [hverkuil: made sama7g5_controller_formats et al static] Signed-off-by:
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Eugen Hristev authored
Add bindings for the Microchip eXtended Image Sensor Controller. Based on the atmel,isc.yaml binding. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Eugen Hristev authored
Convert the Atmel ISC to yaml binding format. Signed-off-by:
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Eugen Hristev authored
Remove a duplicate definition of clock max divider Signed-off-by:
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Eugen Hristev authored
Add support for additional formats supported by newer pipelines, and for additional pipeline modules. Signed-off-by:
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Eugen Hristev authored
Add additional fields for registers present in sama7g5 type pipeline. Extend register masks for additional bits in sama7g5 type pipeline registers. Signed-off-by:
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Eugen Hristev authored
Once the pipeline is set in the base code, create a callback that will adapt the ISC pipeline to each product. Create the adapt_pipeline callback that will be used in this fashion. [hverkuil: made isc_sama5d2_adapt_pipeline static] Signed-off-by:
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Eugen Hristev authored
The list of input and output formats has to be product specific. Move this list into the product specific code. Have pointers to these arrays inside the device struct. Signed-off-by:
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Eugen Hristev authored
The RLP submodule is a part of the atmel-isc pipeline, and stands for Rounding,Limiting and Packaging. It used to extract specific data from the ISC pipeline. For example if we want to output greyscale 8 bit, we would use limiting to 8 bits, and packaging to Luma component only. Create a product specific callback for initializing the RLP submodule of the pipeline [hverkuil: made isc_sama5d2_config_rlp static] Signed-off-by:
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Eugen Hristev authored
The GAM submodule is a part of the atmel-isc pipeline, and stands for Gamma Correction. It is used to apply the gamma curve to the incoming pixels. Create a product specific callback for initializing the GAM submodule of the pipeline. For sama5d2 product, there is no special configuration at this moment, thus this function is a noop. [hverkuil: made isc_sama5d2_config_gam static] Signed-off-by:
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Eugen Hristev authored
The DPC submodule is a part of the atmel-isc pipeline, and stands for Defective Pixel Correction. Its purpose is to detect defective pixels and correct them if possible with the help of adjacent pixels. Create a product specific callback for initializing the DPC submodule of the pipeline. For sama5d2 product, this module does not exist, thus this function is a noop. [hverkuil: made isc_sama5d2_config_dpc static] Signed-off-by:
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Eugen Hristev authored
Create product specific callback for initializing v4l2 controls. Call this from v4l2 controls init function. [hverkuil: made isc_sama5d2_config_ctrls static] Signed-off-by:
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Eugen Hristev authored
The CC submodule is a part of the atmel-isc pipeline, and stands for Color Correction. It is used to apply gains and offsets to the chroma (U, V) components of the YUV elements. Implement the CC submodule initialization, as a product specific function, which currently configures the neutral point in color correction. [hverkuil: made isc_sama5d2_config_cc static] Signed-off-by:
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Eugen Hristev authored
Newer ISC pipelines have the additional modules of Defective Pixel Correction -> DPC itself, Defective Pixel Correction -> Green Disparity Correction (DPC_GDC) Defective Pixel Correction -> Black Level Correction (DPC_BLC) Vertical and Horizontal Scaler -> VHXS Some products have this full pipeline (sama7g5), other products do not (sama5d2) Add the modules to the isc base, and also extend the register range to include the modules. Signed-off-by:
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Eugen Hristev authored
Add register description for additional pipeline modules: the Defective Pixel Correction (DPC) and the Vertical and Horizontal Scaler(VHXS) Signed-off-by:
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