- 25 May, 2021 1 commit
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Hans Verkuil authored
When v4l2_ctrl_request_complete() is called and there is no control handler object found in the request, then create such an object so that all controls at completion state can be stored and are available to userspace. Otherwise any attempt by userspace to read the completed request data will fail. If allocating the control handler object failed, then indicate that by returning ENOMEM when attempting to get the controls from the completed request instead of returning ENOENT. Signed-off-by:
Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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- 23 May, 2021 38 commits
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Laurent Pinchart authored
Given my recent contributions to the imx7-mipi-csis driver, I can as well be listed as a maintainer. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by:
Rui Miguel Silva <rmfrfs@gmail.com> Signed-off-by:
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Laurent Pinchart authored
The CSI-2 receiver in the i.MX8MM is a newer version of the one found in the i.MX7. Differences are minimal, support it in the imx7_mipi_csis driver. Signed-off-by:
Frieder Schrempf <frieder.schrempf@kontron.de> Signed-off-by:
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Laurent Pinchart authored
The i.MX8MM integrates a newer version of the CSIS CSI-2 receiver as the i.MX7 family. Differences in integration are are: - An additional clock is required - Up to 4 data lanes are supported - No reset or PHY supply is present Support it in the DT binding. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Laurent Pinchart authored
Move the PHY regulator and reset handling to dedicated functions. This groups all related code together, and prepares for i.MX8 support that doesn't require control of the PHY regulator and reset. Signed-off-by:
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Laurent Pinchart authored
The CSIS doesn't support data lanes reordering. Reject invalid settings. Signed-off-by:
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Laurent Pinchart authored
Group the operations performed in mipi_csis_probe() logically to improve readability. Signed-off-by:
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Laurent Pinchart authored
Group the fiels of the csi_state structure logically to improve readability. Signed-off-by:
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Laurent Pinchart authored
The num_clocks field of the csi_state only stores positive values, make it unsigned. Signed-off-by:
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Laurent Pinchart authored
The pdev field of the csi_state structure is only used to access the device pointer, which is stored in a separate field. Drop the pdev field, as well as a few local dev variables. Signed-off-by:
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Laurent Pinchart authored
Pass the csi_state pointer to the mipi_csis_subdev_init() function, instead of miscellaneous information scattered in different arguments. Signed-off-by:
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Laurent Pinchart authored
The mipi_csis_parse_dt() function is called with a pointer to the csi_state, which contains all the information necessary. Don't pass the platform device pointer as well. Signed-off-by:
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Laurent Pinchart authored
The irq field of the csi_state structure is only used in mipi_csis_probe(). Turn it into a local variable. Signed-off-by:
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Laurent Pinchart authored
The flag field of the csi_state structure contains the device state. Rename it accordingly. Signed-off-by:
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Laurent Pinchart authored
The CSIS is modelled as a single subdev, there's thus no ambiguity regarding which subdev the code refers to. Rename mipi_sd to sd. Signed-off-by:
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Laurent Pinchart authored
The phy field of the csi_state structure is unused. Drop it. Signed-off-by:
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Laurent Pinchart authored
Replace the register value stored in the csis_pix_format structure with the CSI-2 data type. The register value is simply computed from the data type using a shift. This prepares for i.MX8MP support that needs the same data type in a different hardware register. Signed-off-by:
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Laurent Pinchart authored
The csis_hw_reset structure is instantiated as a member of csi_state, but that member is never used. Drop it. Signed-off-by:
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Laurent Pinchart authored
Set the CLKSETTLE field explicitly, with a value hardcoded to 0. This brings no functional change, but prepares for calculation of the CLKSETTLE value. Signed-off-by:
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Laurent Pinchart authored
Improve readability by reorganizing the code in sections. No functional change intended. Signed-off-by:
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Laurent Pinchart authored
The driver doesn't need to store subdev data, as the subdev is embedded in csi_state and is thus accessed using container_of. Signed-off-by:
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Laurent Pinchart authored
Reduce the code sections that are run with the lock held in the get/set format handlers: - mipi_csis_get_format() retrieves a pointer to the format, and thus doesn't need locking as long as the arguments passed to the function don't require locking either. - sdformat is a structure passed by the caller, not an internal state, and thus doesn't require locking. Signed-off-by:
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Laurent Pinchart authored
It's customary to declare static variables at the top of the function, with a blank line separating them from the non-static variables. Signed-off-by:
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Laurent Pinchart authored
The i.MX8MM expands the DOUBLE_CMPNT bit in the ISP_CONFIG register into a two bits field that support quad pixel mode in addition to the single and double modes. Update the ISP_CONFIG register macros to support this. Signed-off-by:
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Laurent Pinchart authored
In addition to the main interrupts that flag errors and other events, the CSI-2 receiver has debug interrupt sources that flag various events useful for debugging. Add those sources to the event counter mechanism and print them when debugging is enabled. Signed-off-by:
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Laurent Pinchart authored
The mipi_csis_events array ends with 6 non-error events, not 4. Update mipi_csis_log_counters() accordingly. While at it, log event counters in forward order, as there's no reason to log them backward. Signed-off-by:
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Ezequiel Garcia authored
Until now, the MPEG-2 V4L2 API was not exported as a public API, and only defined in a private media header (media/mpeg2-ctrls.h). After reviewing the MPEG-2 specification in detail, and reworking the controls so they match the MPEG-2 semantics properly, we can consider it ready. Signed-off-by:
Ezequiel Garcia <ezequiel@collabora.com> Tested-by:
Jernej Skrabec <jernej.skrabec@siol.net> Reviewed-by:
Daniel Almeida <daniel.almeida@collabora.com> Signed-off-by:
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Ezequiel Garcia authored
Simply print the type of the control. Signed-off-by:
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Ezequiel Garcia authored
Move the MPEG-2 stateless control types out of staging, and re-number it to avoid any confusion. Signed-off-by:
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Ezequiel Garcia authored
The Hantro and Cedrus drivers work in frame-mode, meaning they expect all the slices in a picture (either frame or field structure) to be passed in each OUTPUT buffer. These two are the only V4L2 MPEG-2 stateless decoders currently supported. Given the VA-API drivers also work per-frame, coalescing all the MPEG-2 slices in a buffer before the decoding operation, it makes sense to not expect slice-mode drivers and therefore remove V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS. This is done to avoid carrying an unused interface. If needed, this control can be added without breaking backwards compatibility. Note that this would mean introducing a enumerator control to specify the decoding mode (see V4L2_CID_STATELESS_H264_DECODE_MODE). Signed-off-by:
Nicolas Dufresne <nicolas.dufresne@collabora.com> Signed-off-by:
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Ezequiel Garcia authored
The MPEG2_SLICE_PARAMS control is designed to refer to a single slice. However, the Hantro and Cedrus drivers operate in per-frame mode, and so does the current Ffmpeg and GStreamer implementations that are tested with these two drivers. In other words, the drivers are expecting all the slices in a picture (with either frame or field structure) to be contained in the OUTPUT buffer, which means the slice size and offset shouldn't be used. Signed-off-by:
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Ezequiel Garcia authored
The forward and backwards references are specified per-picture and not per-slice. Move it to V4L2_CID_MPEG_VIDEO_MPEG2_PICTURE. Signed-off-by:
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Ezequiel Garcia authored
Typically, bitstreams are composed of a sequence header, followed by a number of picture header and picture coding extension headers. Each picture can be composed of a number of slices. Let's split the MPEG-2 uAPI to follow these semantics more closely, allowing more usage flexibility. Having these controls split up allows applications to set a sequence control at the beginning of a sequence, and then set a picture control for each frame. While here add padding fields where needed, and document the uAPI header thoroughly. Note that the V4L2_CTRL_TYPE_{} defines had to be moved because it clashes with existing ones. This is not really an issue since they will be re-defined when the controls are moved out of staging. Signed-off-by:Jonas Karlman <jonas@kwiboo.se> Tested-by:
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Ezequiel Garcia authored
Our current MPEG-2 uAPI uses 1-byte fields for MPEG-2 boolean syntax elements. Clean these by adding a 'flags' field and flag macro for each boolean syntax element. A follow-up change will refactor this uAPI so we don't need to add padding fields just yet. Signed-off-by:
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Ezequiel Garcia authored
As stated in the MPEG-2 specification, section 6.3.7 "Quant matrix extension": Each quantisation matrix has a default set of values. When a sequence_header_code is decoded all matrices shall be reset to their default values. User defined matrices may be downloaded and this can occur in a sequence_header() or in a quant_matrix_extension(). The load_intra_quantiser_matrix syntax elements are transmitted in the bitstream headers, signalling that a quantisation matrix needs to be loaded and used for pictures transmitted afterwards (until the matrices are reset). This "load" semantics are implemented in the V4L2 interface without the need of any "load" flags: passing the control is effectively a load. Therefore, rework the V4L2_CID_MPEG_VIDEO_MPEG2_QUANTISATION semantics to match the MPEG-2 semantics. Quantisation matrices values are now initialized by the V4L2 control core to their reset default value, and applications are expected to reset their values as specified. The quantisation control is therefore optional, and used to load bitstream-defined values in the quantisation matrices. Signed-off-by:
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Ezequiel Garcia authored
The MPEG-2 specification refers to the quantisation matrices using the word "quantisation". Make the V4L2 interface more ergonomic by matching the MPEG-2 spec. Signed-off-by:
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Pavel Skripkin authored
syzbot reported WARNING in vmalloc. The problem was in zero size passed to vmalloc. The root case was in wrong cxusb_bluebird_lgz201_properties definition. adapter array has only 1 entry, but num_adapters was 2. Call Trace: __vmalloc_node mm/vmalloc.c:2963 [inline] vmalloc+0x67/0x80 mm/vmalloc.c:2996 dvb_dmx_init+0xe4/0xb90 drivers/media/dvb-core/dvb_demux.c:1251 dvb_usb_adapter_dvb_init+0x564/0x860 drivers/media/usb/dvb-usb/dvb-usb-dvb.c:184 dvb_usb_adapter_init drivers/media/usb/dvb-usb/dvb-usb-init.c:86 [inline] dvb_usb_init drivers/media/usb/dvb-usb/dvb-usb-init.c:184 [inline] dvb_usb_device_init.cold+0xc94/0x146e drivers/media/usb/dvb-usb/dvb-usb-init.c:308 cxusb_probe+0x159/0x5e0 drivers/media/usb/dvb-usb/cxusb.c:1634 Fixes: 4d43e13f ("V4L/DVB (4643): Multi-input patch for DVB-USB device") Cc: stable@vger.kernel.org Reported-by: syzbot+7336195c02c1bd2f64e1@syzkaller.appspotmail.com Signed-off-by:
Pavel Skripkin <paskripkin@gmail.com> Signed-off-by:
Sean Young <sean@mess.org> Signed-off-by:
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Dan Carpenter authored
The adapter count is fixed at compile time so we can delete the lme2510_get_adapter_count() function and set ".num_adapters = 1" instead. There is also no need to create a zeroed adapter element at the end of the array. Remove that as well. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Christophe JAILLET authored
'ret' is known to be 1 here. In fact 'i' is expected instead. Store the return value of 'i2c_master_recv()' in 'ret' so that the error message print the correct error code. Fixes: acaa34bf ("media: rc: implement zilog transmitter") Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
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- 21 May, 2021 1 commit
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wengjianfeng authored
change 'purpous' to 'purpose'. change 'frequecy' to 'frequency'. remove redundant words struct and enum. Signed-off-by:
wengjianfeng <wengjianfeng@yulong.com> Signed-off-by:
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