- 25 Nov, 2022 40 commits
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Hans Verkuil authored
When userspace called VIDIOC_STREAMON, then you want to claim any streaming resources needed and validate the video pipeline. Waiting for start_streaming to be called is too late, since that can be postponed until the required minimum of buffers is queued. So add a prepare_streaming op (optional) that can be used for that purpose, and a matching unprepare_streaming op (optional) that can release any claimed resources. The unprepare_streaming op is called when VIDIOC_STREAMOFF is called and q->streaming is 1, or when the filehandle is closed while q->streaming is 1. Signed-off-by:
Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@kernel.org>
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Hans Verkuil authored
Document administration details about CEC devices. This was formerly documented in a cec-status.txt I kept on my website, but this really belongs here as an admin guide. Updated the original cec-status.txt, and converted it to .rst. Signed-off-by:
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Ian Cowan authored
This cleans up a checkstyle warning where the vb2_ops struct definitions should be const. Signed-off-by:
Ian Cowan <ian@linux.cowan.aero> Reviewed-by:
Samuel Holland <samuel@sholland.org> Signed-off-by:
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Yuan Can authored
A problem about modprobe amphion-vpu failed is triggered with the following log given: [ 2208.634841] Error: Driver 'amphion-vpu' is already registered, aborting... modprobe: ERROR: could not insert 'amphion_vpu': Device or resource busy The reason is that vpu_driver_init() returns vpu_core_driver_init() directly without checking its return value, if vpu_core_driver_init() failed, it returns without unregister amphion_vpu_driver, resulting the amphion-vpu can never be installed later. A simple call graph is shown as below: vpu_driver_init() platform_driver_register() # register amphion_vpu_driver vpu_core_driver_init() platform_driver_register() driver_register() bus_add_driver() dev = kzalloc(...) # OOM happened # return without unregister amphion_vpu_driver Fix by unregister amphion_vpu_driver when vpu_core_driver_init() returns error. Fixes: b50a64fc ("media: amphion: add amphion vpu device driver") Signed-off-by:Yuan Can <yuancan@huawei.com> Reviewed-by:
ming_qian <ming.qian@nxp.com> Signed-off-by:
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Yuan Can authored
A problem about modprobe s5p_fimc failed is triggered with the following log given: [ 272.075275] Error: Driver 'exynos4-fimc' is already registered, aborting... modprobe: ERROR: could not insert 's5p_fimc': Device or resource busy The reason is that fimc_md_init() returns platform_driver_register() directly without checking its return value, if platform_driver_register() failed, it returns without unregister fimc_driver, resulting the s5p_fimc can never be installed later. A simple call graph is shown as below: fimc_md_init() fimc_register_driver() # register fimc_driver platform_driver_register() platform_driver_register() driver_register() bus_add_driver() dev = kzalloc(...) # OOM happened # return without unregister fimc_driver Fix by unregister fimc_driver when platform_driver_register() returns error. Fixes: d3953223 ("[media] s5p-fimc: Add the media device driver") Signed-off-by: -
Yang Yingliang authored
destroy_workqueue() needs be called to when driver is unloading, fix it by using devm_add_action_or_reset() to make workqueuedevice-managed. Fixes: dedc2150 ("media: mtk-jpegdec: add jpeg decode worker interface") Signed-off-by:
Yang Yingliang <yangyingliang@huawei.com> Signed-off-by:
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Jammy Huang authored
If the host is powered off, there will be many warning log. To avoid the log spam in this condition, replace v4l2_warn with v4l2_dbg. Signed-off-by:
Jammy Huang <jammy_huang@aspeedtech.com> Signed-off-by:
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Yang Yingliang authored
If device_register() returns error in solo_sysfs_init(), the name allocated by dev_set_name() need be freed. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So fix this by calling put_device(), then the name can be freed in kobject_cleanup(). Fixes: dcae5dac ("[media] solo6x10: sync to latest code from Bluecherry's git repo") Signed-off-by:
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Jernej Skrabec authored
Testing reference video TSUNEQBD_A_MAIN10_Technicolor_2 has show that Cedrus is capable of decoding frames with different chroma and luma bit depths. Relax restrictions so only highest depth is checked. Signed-off-by:
Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by:
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Jernej Skrabec authored
10-bit frames needs extra buffer space when 8-bit capture format is used. Use previously prepared infrastructure to adjust buffer size. Signed-off-by:
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Jernej Skrabec authored
In some cases decoding engine needs extra space in capture buffers. This is the case for decoding 10-bit HEVC frames into 8-bit capture format. This commit only adds infrastructure for such cases. Signed-off-by:
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Aakarsh Jain authored
Already error number provision is present for block failing, while requesting for DMA consistent memory allocation. So removing error message line from the block as recommended by scripts/checkpatch.pl. Signed-off-by:
Aakarsh Jain <aakarsh.jain@samsung.com> Signed-off-by:
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Aakarsh Jain authored
Fix usage of block comment alignment in drivers/media/platform/samsung/ s5p-mfc/s5p_mfc.c as recommended by scripts/checkpatch.pl. Signed-off-by:
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Aakarsh Jain authored
Change symbolic permissions to octal equivalent as recommended by scripts/checkpatch.pl in drivers/media/platform/samsung/ s5p-mfc/s5p_mfc.c. Signed-off-by:
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Chen Zhongjin authored
KASAN reports a use-after-free: BUG: KASAN: use-after-free in dvb_dmxdev_release+0x4d5/0x5d0 [dvb_core] Call Trace: ... dvb_dmxdev_release+0x4d5/0x5d0 [dvb_core] vidtv_bridge_probe+0x7bf/0xa40 [dvb_vidtv_bridge] platform_probe+0xb6/0x170 ... Allocated by task 1238: ... dvb_register_device+0x1a7/0xa70 [dvb_core] dvb_dmxdev_init+0x2af/0x4a0 [dvb_core] vidtv_bridge_probe+0x766/0xa40 [dvb_vidtv_bridge] ... Freed by task 1238: dvb_register_device+0x6d2/0xa70 [dvb_core] dvb_dmxdev_init+0x2af/0x4a0 [dvb_core] vidtv_bridge_probe+0x766/0xa40 [dvb_vidtv_bridge] ... It is because the error handling in vidtv_bridge_dvb_init() is wrong. First, vidtv_bridge_dmx(dev)_init() will clean themselves when fail, but goto fail_dmx(_dev): calls release functions again, which causes use-after-free. Also, in fail_fe, fail_tuner_probe and fail_demod_probe, j = i will cause out-of-bound when i finished its loop (i == NUM_FE). And the loop releasing is wrong, although now NUM_FE is 1 so it won't cause problem. Fix this by correctly releasing everything. Fixes: f90cf607 ("media: vidtv: add a bridge driver") Signed-off-by:
Chen Zhongjin <chenzhongjin@huawei.com> Signed-off-by:
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Deepak R Varma authored
Use of standard min() helper macro is preferred over using ternary operator for logical evaluation and value assignment. This issue is identified by coccicheck using the minmax.cocci file. Signed-off-by:
Deepak R Varma <drv@mailo.com> Reviewed-by:
Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by:
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Daniel Almeida authored
A virtual stateless device for stateless uAPI development purposes. This tool's objective is to help the development and testing of userspace applications that use the V4L2 stateless API to decode media. A userspace implementation can use visl to run a decoding loop even when no hardware is available or when the kernel uAPI for the codec has not been upstreamed yet. This can reveal bugs at an early stage. This driver can also trace the contents of the V4L2 controls submitted to it. It can also dump the contents of the vb2 buffers through a debugfs interface. This is in many ways similar to the tracing infrastructure available for other popular encode/decode APIs out there and can help develop a userspace application by using another (working) one as a reference. Note that no actual decoding of video frames is performed by visl. The V4L2 test pattern generator is used to write various debug information to the capture buffers instead. Signed-off-by:
Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by:
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Ming Qian authored
vb2_queue_error is help to set the error of vb2_queue, don't need to set it manually Fixes: 3cd08451 ("media: amphion: add vpu v4l2 m2m support") Signed-off-by:
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Ming Qian authored
the capture format may be changed when sequence header is parsed, it may be read and write in the same time, add lock around vdec_g_fmt to synchronize it Fixes: 6de8d628 ("media: amphion: add v4l2 m2m vpu decoder stateful driver") Signed-off-by:
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Chen Zhongjin authored
In vimc_init(), when platform_driver_register(&vimc_pdrv) fails, platform_driver_unregister(&vimc_pdrv) is wrongly called rather than platform_device_unregister(&vimc_pdev), which causes kernel warning: Unexpected driver unregister! WARNING: CPU: 1 PID: 14517 at drivers/base/driver.c:270 driver_unregister+0x8f/0xb0 RIP: 0010:driver_unregister+0x8f/0xb0 Call Trace: <TASK> vimc_init+0x7d/0x1000 [vimc] do_one_initcall+0xd0/0x4e0 do_init_module+0x1cf/0x6b0 load_module+0x65c2/0x7820 Fixes: 4a29b709 ("[media] vimc: Subdevices as modules") Signed-off-by:
Shuah Khan <skhan@linuxfoundation.org> Signed-off-by:
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Paul Kocialkowski authored
In order to use the isp and csi together, both devices need to be parented to the same v4l2 and media devices. We use the isp as top-level device and let the csi code hook to its v4l2 and media devices when async subdev registration takes place. As a result v4l2/media device setup is only called when the ISP is missing and the capture device is registered after the devices are hooked. The bridge subdev and its notifier are registered without any device when the ISP is available. Top-level pointers for the devices are introduced to either redirect to the hooked ones (isp available) or the registered ones (isp missing). Also keep track of whether the capture node was setup or not to avoid cleaning up resources when it wasn't. Signed-off-by:
Paul Kocialkowski <paul.kocialkowski@bootlin.com> Signed-off-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by:
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Paul Kocialkowski authored
Add a helper to detect whether the ISP is available and connected and store the indication in the driver-specific device structure. Signed-off-by:
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Paul Kocialkowski authored
Add myself as maintainer of the Allwinner A31 ISP media driver. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Paul Kocialkowski authored
Some Allwinner platforms come with an Image Signal Processor, which supports various features in order to enhance and transform data received by image sensors into good-looking pictures. In most cases, the data is raw bayer, which gets internally converted to RGB and finally YUV, which is what the hardware produces. This driver supports ISPs that are similar to the A31 ISP, which was the first standalone ISP found in Allwinner platforms. Simpler ISP blocks were found in the A10 and A20, where they are tied to a CSI controller. Newer generations of Allwinner SoCs (starting with the H6, H616, etc) come with a new camera subsystem and revised ISP. Even though these previous and next-generation ISPs are somewhat similar to the A31 ISP, they have enough significant differences to be out of the scope of this driver. While the ISP supports many features, including 3A and many enhancement blocks, this implementation is limited to the following: - V3s (V3/S3) platform support; - Bayer media bus formats as input; - Semi-planar YUV (NV12/NV21) as output; - Debayering with per-component gain and offset configuration; - 2D noise filtering with configurable coefficients. Since many features are missing from the associated uAPI, the driver is aimed to integrate staging until all features are properly described. On the technical side, it uses the v4l2 and media controller APIs, with a video node for capture, a processor subdev and a video node for parameters submission. A specific uAPI structure and associated v4l2 meta format are used to configure parameters of the supported modules. One particular thing about the hardware is that configuration for module registers needs to be stored in a DMA buffer and gets copied to actual registers by the hardware at the next vsync, when instructed by a flag. This is handled by the "state" mechanism in the driver. Signed-off-by:
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Paul Kocialkowski authored
Some Allwinner devices come with an Image Signal Processor (ISP) that allows processing camera data to produce good-looking images, especially from raw bayer representations. The ISP does not have a dedicated capture path: it is fed directly by one of the CSI controllers, which can be selected at run-time. Represent this possibility as a graph connection between the CSI controller and the ISP in the device-tree bindings. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Paul Kocialkowski authored
This introduces YAML bindings documentation for the Allwinner A31 Image Signal Processor (ISP). Signed-off-by:
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Paul Kocialkowski authored
Given the substantial rework of the driver that I carried out and the knowledge acquired about the hardware along the way, make myself a maintainer of the sun6i-csi driver. Also rename and move the entry while at it since the driver is not specific to the V3s. Signed-off-by:
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Paul Kocialkowski authored
Request our interrupt shared since it is typically shared with the isp block. The interrupt routine looks good to go for shared irq. Signed-off-by:
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Paul Kocialkowski authored
Check against the enabled bits and make sure capture is running before serving an interrupt, to add extra safety in the process. Signed-off-by:
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Paul Kocialkowski authored
Add a streaming element to the capture state structure to know if the capture device is used or not. Only configure things related to output when streaming, including the output format, irq, state (dma buffer) and window configuration registers. After this change, it becomes possible to use the bridge without the capture device, which will be the case in the isp media flow. Signed-off-by:
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Paul Kocialkowski authored
Introduce MIPI CSI-2 support to the bridge with a new port, source and hardware configuration helper. Signed-off-by:
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Paul Kocialkowski authored
Cleanup includes, update copyright lines and some cosmetic changes. Signed-off-by:
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Paul Kocialkowski authored
Now that the driver is properly split between bridge and capture, rename the video device to highlight its role and be in line with the bridge entity naming. Signed-off-by:
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Paul Kocialkowski authored
In order to support the isp workflow, we need to be able to configure the hardware from the bridge when the capture device is not used. As a result, move all hardware configuration calls from capture to the bridge. Only the window configuration part (which is specific to using capture) remains there. This effectively opens the way for hooking the bridge to the isp in the future. Signed-off-by:
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Paul Kocialkowski authored
The remote subdev connected to the capture video device is always our bridge, so get the bridge subdev directly instead of using a dedicated helper (which is removed by this commit). Signed-off-by:
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Paul Kocialkowski authored
Rework the capture link validate implementation with actual logic that reflects the possibilities of the device instead of the combinatory helper functions, using the added match list helper sun6i_csi_is_format_supported() when needed. Remove the previous dedicated helper. Signed-off-by:
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Paul Kocialkowski authored
Switch over to using the static format table descriptions to configure registers. Rework the hardware configuration helpers to leverage information from the format structures and benefit from their logic. Remove the previous dedicated helpers. The intention is to make the interaction between the different formats and the hardware side more visible and clear. Signed-off-by:
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Paul Kocialkowski authored
Add a table that describes each pixel format and associated output register configuration with necessary tweaks. It will be used later on to configure the hardware. Signed-off-by:
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Paul Kocialkowski authored
Introduce a more informative format list for the bridge, with information about how to configure the input. This separation will later be useful when using the bridge standalone (without capture) for the isp workflow. Signed-off-by:
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Paul Kocialkowski authored
Some misc code cleanups and preparation for upcoming changes. Signed-off-by:
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