- 22 Mar, 2011 33 commits
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Laurent Pinchart authored
Instead of returning an error when receiving an ioctl call with an unsupported command, forward the call to the subdev core::ioctl handler. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by:
Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Sergio Aguirre authored
Make sure the kernel can be compiled with both OMAP2 and OMAP3 camera support linked in, and give public symbols proper omap2/omap3 prefixes. Signed-off-by:
Sergio Aguirre <saaguirre@ti.com> Acked-by:
Tony Lindgren <tony@atomide.com> Acked-by:
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Laurent Pinchart authored
The omap3isp platform device requires platform data. Instead of registering the device in omap2_init_devices(), export an omap3_init_camera() function to fill the device structure with the platform data pointer and register the device. Signed-off-by:
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Sergio Aguirre authored
The ISP CBUFF module isn't use, its resource isn't needed. Signed-off-by:
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Tuukka Toivonen authored
Add new/changed base address definitions and resources for OMAP3630 ISP. The OMAP3430 CSI2PHY block is same as the OMAP3630 CSIPHY2 block. But the later name is chosen as it gives more symmetry to the names. Signed-off-by:
Tuukka Toivonen <tuukkat76@gmail.com> Signed-off-by:
Vimarsh Zutshi <vimarsh.zutshi@gmail.com> Acked-by:
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Laurent Pinchart authored
Add FCCs for the following pixel formats: - V4L2_PIX_FMT_SBGGR12 - V4L2_PIX_FMT_SGBRG12 - V4L2_PIX_FMT_SGRBG12 - V4L2_PIX_FMT_SRGGB12 Signed-off-by:
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Laurent Pinchart authored
Add codes and documentation for the following media bus formats: - V4L2_MBUS_FMT_SGBRG12_1X12 - V4L2_MBUS_FMT_SGRBG12_1X12 - V4L2_MBUS_FMT_SRGGB12_1X12 Signed-off-by:
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Laurent Pinchart authored
This adds following formats: - V4L2_MBUS_FMT_SRGGB10_1X10 - V4L2_MBUS_FMT_SGBRG10_1X10 - V4L2_MBUS_FMT_SRGGB10_DPCM8_1X8 - V4L2_MBUS_FMT_SGBRG10_DPCM8_1X8 - V4L2_MBUS_FMT_SBGGR10_DPCM8_1X8 Signed-off-by:
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Laurent Pinchart authored
Add the following media bus format code definitions: - V4L2_MBUS_FMT_SGRBG10_1X10 for 10-bit GRBG Bayer - V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8 for 10-bit DPCM compressed GRBG Bayer - V4L2_MBUS_FMT_YUYV16_1X16 for 8-bit YUYV on 16-bit bus - V4L2_MBUS_FMT_UYVY16_1X16 for 8-bit UYVY on 16-bit bus - V4L2_MBUS_FMT_YVYU16_1X16 for 8-bit YVYU on 16-bit bus - V4L2_MBUS_FMT_VYUY16_1X16 for 8-bit VYUY on 16-bit bus Signed-off-by:
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Laurent Pinchart authored
Some buggy sensors generate corrupt frames when the stream is started. This new operation return the number of corrupt frames to skip when starting the stream. Signed-off-by:
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Antti Koskipaa authored
This patch adds the VIDIOC_SUBDEV_S_CROP and G_CROP ioctls to the userland API. CROPCAP is not implemented because it's redundant. Signed-off-by:
Antti Koskipaa <akoskipa@gmail.com> Signed-off-by:
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Laurent Pinchart authored
The three new ioctl VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL, VIDIOC_SUBDEV_G_FRAME_INTERVAL and VIDIOC_SUBDEV_S_FRAME_INTERVAL can be used to enumerate and configure a subdev's frame rate from userspace. Two new video::g/s_frame_interval subdev operations are introduced to support those ioctls. The existing video::g/s_parm operations are deprecated and shouldn't be used anymore. Signed-off-by:
Sakari Ailus <sakari.ailus@iki.fi> Acked-by:
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Laurent Pinchart authored
Add a userspace API to get, set and enumerate the media format on a subdev pad. The format at the output of a subdev usually depends on the format at its input(s). The try format operation is thus not suitable for probing format at individual pads, as it can't modify the device state and thus can't remember the format tried at the input to compute the output format. To fix the problem, pass an extra argument to the get/set format operations to select the 'try' or 'active' format. The try format is used when probing the subdev. Setting the try format must not change the device configuration but can store data for later reuse. Data storage is provided at the file-handle level so applications probing the subdev concurently won't interfere with each other. The active format is used when configuring the subdev. It's identical to the format handled by the usual get/set operations. Signed-off-by:
Stanimir Varbanov <svarbanov@mm-sol.com> Signed-off-by:
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Laurent Pinchart authored
Add images used by the V4L2 subdev userspace format API documentation. Signed-off-by:
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Laurent Pinchart authored
Add a v4l2_subdev_pad_ops structure for the operations that need to be performed at the pad level such as format-related operations. Pad format-related operations use v4l2_mbus_framefmt instead of v4l2_format. Signed-off-by:
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Laurent Pinchart authored
V4L2 sub-devices store pad formats and crop settings in the file handle. To let drivers initialize those settings properly, add an open operation that is called when the subdev is opened as well as a corresponding close operation. Signed-off-by:
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Stanimir Varbanov authored
Used for storing subdev information per file handle and hold V4L2 file handle. Signed-off-by:
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Laurent Pinchart authored
Adding new pixel codes at the end of the enumeration will soon create a mess, so group the pixel codes by type and sort them by bus_width, bits per component, samples per pixel and order of subsamples. As the codes are part of the kernel ABI their value can't change when a new code is inserted in the enumeration, so they are given an explicit numerical value. When inserting a new pixel code developers must use and update the next free value. Signed-off-by:
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Laurent Pinchart authored
For consistency with the V4L2_MBUS_FMT_Y10_1X10 format. Signed-off-by:
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Laurent Pinchart authored
The v4l2_mbus_framefmt structure will be part of the public userspace API and used (albeit indirectly) as an ioctl argument. As such, its size must be fixed across userspace ABIs. Replace the v4l2_field and v4l2_colorspace enums by __u32 fields and add padding for future enhancements. Signed-off-by:
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Laurent Pinchart authored
The header defines the v4l2_mbus_framefmt structure which will be used by the V4L2 subdevs userspace API. Change the type of the v4l2_mbus_framefmt::code field to __u32, as enum sizes can differ between different ABIs on the same architectures. Signed-off-by:
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Laurent Pinchart authored
V4L2 subdevices are media entities. As such they need to inherit from (include) the media_entity structure. When registering/unregistering the subdevice, the media entity is automatically registered/unregistered. The entity is acquired on device open and released on device close. Signed-off-by:
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Laurent Pinchart authored
V4L2 devices are media entities. As such they need to inherit from (include) the media_entity structure. When registering/unregistering the device, the media entity is automatically registered/unregistered. The entity is acquired on device open and released on device close. Signed-off-by:
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Laurent Pinchart authored
The pointer will later be used to register/unregister media entities when registering/unregistering a v4l2_subdev or a video_device. With the introduction of media devices, device drivers need to store a pointer to a driver-specific structure in the device's drvdata. v4l2_device can't claim ownership of the drvdata anymore. To maintain compatibility with drivers that rely on v4l2_device storing a pointer to itself in the device's drvdata, v4l2_device_register() will keep doing so if the drvdata is NULL. Signed-off-by:
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Laurent Pinchart authored
Drivers often need to associate pipeline objects to entities, and to take stream state into account when configuring entities and links. The pipeline API helps drivers manage that information. When starting streaming, drivers call media_entity_pipeline_start(). The function marks all entities connected to the given entity through enabled links, either directly or indirectly, as streaming. Similarly, when stopping the stream, drivers call media_entity_pipeline_stop(). The media_entity_pipeline_start() function takes a pointer to a media pipeline and stores it in every entity in the graph. Drivers should embed the media_pipeline structure in higher-level pipeline structures and can then access the pipeline through the media_entity structure. Link configuration will fail with -EBUSY by default if either end of the link is a streaming entity, unless the link is marked with the MEDIA_LNK_FL_DYNAMIC flag. Signed-off-by:
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Laurent Pinchart authored
Create the following ioctl and implement it at the media device level to setup links. - MEDIA_IOC_SETUP_LINK: Modify the properties of a given link The only property that can currently be modified is the ENABLED link flag to enable/disable a link. Links marked with the IMMUTABLE link flag can not be enabled or disabled. Enabling or disabling a link has effects on entities' use count. Those changes are automatically propagated through the graph. Signed-off-by:
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Laurent Pinchart authored
Create the following two ioctls and implement them at the media device level to enumerate entities, pads and links. - MEDIA_IOC_ENUM_ENTITIES: Enumerate entities and their properties - MEDIA_IOC_ENUM_LINKS: Enumerate all pads and links for a given entity Entity IDs can be non-contiguous. Userspace applications should enumerate entities using the MEDIA_ENT_ID_FLAG_NEXT flag. When the flag is set in the entity ID, the MEDIA_IOC_ENUM_ENTITIES will return the next entity with an ID bigger than the requested one. Only forward links that originate at one of the entity's source pads are returned during the enumeration process. Signed-off-by:
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Laurent Pinchart authored
Create the following ioctl and implement it at the media device level to query device information. - MEDIA_IOC_DEVICE_INFO: Query media device information The ioctl and its data structure are defined in the new kernel header linux/media.h available to userspace applications. Signed-off-by:
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Laurent Pinchart authored
Due to the wide differences between drivers regarding power management needs, the media controller does not implement power management. However, the media_entity structure includes a use_count field that media drivers can use to track the number of users of every entity for power management needs. The use_count field is owned by media drivers and must not be touched by entity drivers. Access to the field must be protected by the media device graph_mutex lock. Signed-off-by:
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Sakari Ailus authored
Add media entity graph traversal. The traversal follows enabled links by depth first. Traversing graph backwards is prevented by comparing the next possible entity in the graph with the previous one. Multiply connected graphs are thus not supported. Signed-off-by:
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Laurent Pinchart authored
As video hardware pipelines become increasingly complex and configurable, the current hardware description through v4l2 subdevices reaches its limits. In addition to enumerating and configuring subdevices, video camera drivers need a way to discover and modify at runtime how those subdevices are connected. This is done through new elements called entities, pads and links. An entity is a basic media hardware building block. It can correspond to a large variety of logical blocks such as physical hardware devices (CMOS sensor for instance), logical hardware devices (a building block in a System-on-Chip image processing pipeline), DMA channels or physical connectors. A pad is a connection endpoint through which an entity can interact with other entities. Data (not restricted to video) produced by an entity flows from the entity's output to one or more entity inputs. Pads should not be confused with physical pins at chip boundaries. A link is a point-to-point oriented connection between two pads, either on the same entity or on different entities. Data flows from a source pad to a sink pad. Links are stored in the source entity. To make backwards graph walk faster, a copy of all links is also stored in the sink entity. The copy is known as a backlink and is only used to help graph traversal. The entity API is made of three functions: - media_entity_init() initializes an entity. The caller must provide an array of pads as well as an estimated number of links. The links array is allocated dynamically and will be reallocated if it grows beyond the initial estimate. - media_entity_cleanup() frees resources allocated for an entity. It must be called during the cleanup phase after unregistering the entity and before freeing it. - media_entity_create_link() creates a link between two entities. An entry in the link array of each entity is allocated and stores pointers to source and sink pads. When a media device is unregistered, all its entities are unregistered automatically. The code is based on Hans Verkuil <hverkuil@xs4all.nl> initial work. Signed-off-by:
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Laurent Pinchart authored
The media_device structure abstracts functions common to all kind of media devices (v4l2, dvb, alsa, ...). It manages media entities and offers a userspace API to discover and configure the media device internal topology. Signed-off-by:
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Laurent Pinchart authored
The media_devnode structure provides support for registering and unregistering character devices using a dynamic major number. Reference counting is handled internally, making device drivers easier to write without having to solve the open/disconnect race condition issue over and over again. The code is based on video/v4l2-dev.c. [mchehab@redhat.com: Remove linux/smp_lock.h include to not break compilation on bisect] Signed-off-by:
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- 21 Mar, 2011 7 commits
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Sakari Ailus authored
Provide v4l2_subdevs with v4l2_event support. Subdev drivers only need very little to support events. Signed-off-by:
David Cohen <dacohen@gmail.com> Signed-off-by:
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Laurent Pinchart authored
Pass the control-related ioctls to the subdev driver through the control framework. Signed-off-by:
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Laurent Pinchart authored
The function isn't small or performance sensitive enough to be inlined. Signed-off-by:
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Laurent Pinchart authored
Create a device node named subdevX for every registered subdev. As the device node is registered before the subdev core::s_config function is called, return -EGAIN on open until initialization completes. Signed-off-by:
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Laurent Pinchart authored
There's no reason to require subdevices to implement the core operations. Remove the check for non-NULL core operations when initializing the subdev. Signed-off-by:
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Laurent Pinchart authored
The two functions are mostly identical. They handle the copy_from_user and copy_to_user operations related with V4L2 ioctls and call the real ioctl handler. Create a __video_usercopy function that implements the core of video_usercopy and video_ioctl2, and call that function from both. Signed-off-by:
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Laurent Pinchart authored
vb2_get_plane_payload() gets the bytesused field for a plane, it doesn't set it. Signed-off-by:
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