drivers/media/dvb/frontends/stv0367.c: In function 'stv0367ter_lock_algo':
drivers/media/dvb/frontends/stv0367.c:1315:2: warning: cast from pointer to integer of different size

Use %p to print addresses instead of 0x%x.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/common/tuners/tuner-xc2028.c: In function 'generic_set_freq':
drivers/media/common/tuners/tuner-xc2028.c:936:15: warning: comparison between 'enum tuner_mode' and 'enum v4l2_tuner_type'

Argument type was enum tuner_mode, but should have been enum v4l2_tuner_type.
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Add documentation on the OMAP 3 ISP driver. Document the subdevs, V4L2
events and private IOCTLs the driver implements
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: NDavid Cohen <dacohen@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Pick an unused range of ioctls in Documentation/ioctl/ioctl-number.txt
and use it for the MEDIA_IOC_* ioctls.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Replace the omap_pm_set_min_bus_tput() with a callback to board code.
This makes the omap3isp driver compilable as a module, and lets board
code manage OMAP PM details depending on board requirements.
Signed-off-by: NStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Add the OMAP3 ISP driver to the kernel build system.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The OMAP3 ISP statistics entities compute histogram and H3A statistics
information from capture images.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: NDavid Cohen <dacohen@gmail.com>
Signed-off-by: NStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: NVimarsh Zutshi <vimarsh.zutshi@gmail.com>
Signed-off-by: NTuukka Toivonen <tuukkat76@gmail.com>
Signed-off-by: NSergio Aguirre <saaguirre@ti.com>
Signed-off-by: NAntti Koskipaa <akoskipa@gmail.com>
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NRaniSuneela <r-m@ti.com>
Signed-off-by: NAtanas Filipov <afilipov@mm-sol.com>
Signed-off-by: NGjorgji Rosikopulos <grosikopulos@mm-sol.com>
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: NNayden Kanchev <nkanchev@mm-sol.com>
Signed-off-by: NPhil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDominic Curran <dcurran@ti.com>
Signed-off-by: NIlkka Myllyperkio <ilkka.myllyperkio@sofica.fi>
Signed-off-by: NPallavi Kulkarni <p-kulkarni@ti.com>
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The OMAP3 ISP CCDC, preview engine and resizer entities perform image
processing and scaling.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: NDavid Cohen <dacohen@gmail.com>
Signed-off-by: NStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: NVimarsh Zutshi <vimarsh.zutshi@gmail.com>
Signed-off-by: NTuukka Toivonen <tuukkat76@gmail.com>
Signed-off-by: NSergio Aguirre <saaguirre@ti.com>
Signed-off-by: NAntti Koskipaa <akoskipa@gmail.com>
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NRaniSuneela <r-m@ti.com>
Signed-off-by: NAtanas Filipov <afilipov@mm-sol.com>
Signed-off-by: NGjorgji Rosikopulos <grosikopulos@mm-sol.com>
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: NNayden Kanchev <nkanchev@mm-sol.com>
Signed-off-by: NPhil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDominic Curran <dcurran@ti.com>
Signed-off-by: NIlkka Myllyperkio <ilkka.myllyperkio@sofica.fi>
Signed-off-by: NPallavi Kulkarni <p-kulkarni@ti.com>
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The OMAP3 ISP CCP2 and CSI2 receivers provide an interface to connect
serial MIPI sensors to the device.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: NDavid Cohen <dacohen@gmail.com>
Signed-off-by: NStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: NVimarsh Zutshi <vimarsh.zutshi@gmail.com>
Signed-off-by: NTuukka Toivonen <tuukkat76@gmail.com>
Signed-off-by: NSergio Aguirre <saaguirre@ti.com>
Signed-off-by: NAntti Koskipaa <akoskipa@gmail.com>
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NRaniSuneela <r-m@ti.com>
Signed-off-by: NAtanas Filipov <afilipov@mm-sol.com>
Signed-off-by: NGjorgji Rosikopulos <grosikopulos@mm-sol.com>
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: NNayden Kanchev <nkanchev@mm-sol.com>
Signed-off-by: NPhil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDominic Curran <dcurran@ti.com>
Signed-off-by: NIlkka Myllyperkio <ilkka.myllyperkio@sofica.fi>
Signed-off-by: NPallavi Kulkarni <p-kulkarni@ti.com>
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The OMAP3 ISP video devices and buffers queue modules implement the V4L2
API on all the ISP video nodes.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: NDavid Cohen <dacohen@gmail.com>
Signed-off-by: NStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: NVimarsh Zutshi <vimarsh.zutshi@gmail.com>
Signed-off-by: NTuukka Toivonen <tuukkat76@gmail.com>
Signed-off-by: NSergio Aguirre <saaguirre@ti.com>
Signed-off-by: NAntti Koskipaa <akoskipa@gmail.com>
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NRaniSuneela <r-m@ti.com>
Signed-off-by: NAtanas Filipov <afilipov@mm-sol.com>
Signed-off-by: NGjorgji Rosikopulos <grosikopulos@mm-sol.com>
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: NNayden Kanchev <nkanchev@mm-sol.com>
Signed-off-by: NPhil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDominic Curran <dcurran@ti.com>
Signed-off-by: NIlkka Myllyperkio <ilkka.myllyperkio@sofica.fi>
Signed-off-by: NPallavi Kulkarni <p-kulkarni@ti.com>
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The Image Signal Processor provides the system interface and the
processing capability to connect RAW or YUV image-sensor modules to the
OMAP3.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: NDavid Cohen <dacohen@gmail.com>
Signed-off-by: NStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: NVimarsh Zutshi <vimarsh.zutshi@gmail.com>
Signed-off-by: NTuukka Toivonen <tuukkat76@gmail.com>
Signed-off-by: NSergio Aguirre <saaguirre@ti.com>
Signed-off-by: NAntti Koskipaa <akoskipa@gmail.com>
Signed-off-by: NIvan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: NRaniSuneela <r-m@ti.com>
Signed-off-by: NAtanas Filipov <afilipov@mm-sol.com>
Signed-off-by: NGjorgji Rosikopulos <grosikopulos@mm-sol.com>
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: NNayden Kanchev <nkanchev@mm-sol.com>
Signed-off-by: NPhil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: NDominic Curran <dcurran@ti.com>
Signed-off-by: NIlkka Myllyperkio <ilkka.myllyperkio@sofica.fi>
Signed-off-by: NPallavi Kulkarni <p-kulkarni@ti.com>
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NSergio Aguirre <saaguirre@ti.com>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

The ISP CBUFF module isn't use, its resource isn't needed.
Signed-off-by: NSergio Aguirre <saaguirre@ti.com>
Acked-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NTuukka Toivonen <tuukkat76@gmail.com>
Signed-off-by: NVimarsh Zutshi <vimarsh.zutshi@gmail.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NSergio Aguirre <saaguirre@ti.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NAntti Koskipaa <akoskipa@gmail.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Add images used by the V4L2 subdev userspace format API documentation.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Used for storing subdev information per file handle and hold V4L2 file
handle.
Signed-off-by: NStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: NAntti Koskipaa <akoskipa@gmail.com>
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

For consistency with the V4L2_MBUS_FMT_Y10_1X10 format.
Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NStanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>