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path: root/include/media/soc_camera.h
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2011-11-04[media] V4L: soc-camera: make (almost) all client drivers re-usable outside ↵Guennadi Liakhovetski1-3/+3
of the framework The most important change in this patch is direct linking to struct soc_camera_link via the client->dev.platform_data pointer. This makes most of the soc-camera client drivers also usable outside of the soc-camera framework. After this change all what is needed for these drivers to function are inclusions of soc-camera headers for some convenience macros, suitably configured platform data, which is anyway always required, and loaded soc-camera core module for library functions. If desired, these library functions can be made generic in the future and moved to a more neutral location. The only two client drivers, that still depend on soc-camera are: mt9t031: it uses struct video_device for its PM. Since no hardware is available, alternative methods cannot be tested. ov6650: it uses struct soc_camera_device to pass its sense data back to the bridge driver. A generic v4l2-subdevice approach should be developed to perform this. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-04[media] V4L: mt9m001, mt9v022: use internally cached pixel codeGuennadi Liakhovetski1-5/+0
Using the internally cached pixel code, instead of the one, provided by the soc-camera, removes one more use of struct soc_camera_device in these drivers. Also remove the no longer needed soc_camera_from_i2c() inline function. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-04[media] V4L: soc-camera: start removing struct soc_camera_device from client ↵Guennadi Liakhovetski1-4/+21
drivers Remove most trivial uses of struct soc_camera_device from most client drivers, abstracting some of them inside inline functions. Next steps will eliminate remaining uses and modify inline functions to not use struct soc_camera_device. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-04[media] soc_camera: remove the now obsolete struct soc_camera_opsHans Verkuil1-18/+0
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> [g.liakhovetski@gmx.de: mt9m001 hunk moved to an earlier patch] Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-04[media] sh_mobile_ceu_camera: implement the control handlerHans Verkuil1-4/+0
And since this is the last and only host driver that uses controls, also remove the now obsolete control fields from soc_camera.h. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> [g.liakhovetski@gmx.de: moved code around, fixed problems] Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-04[media] soc_camera: add control handler supportHans Verkuil1-0/+2
The soc_camera framework is switched over to use the control framework. After this patch none of the controls in subdevs or host drivers are available, until those drivers are also converted to the control framework. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> [g.liakhovetski@gmx.de: moved code around, fixed problems] Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-04[media] V4L: soc-camera: remove soc-camera client bus-param operations and ↵Guennadi Liakhovetski1-44/+8
supporting code soc-camera has been completely ported over to V4L2 subdevice mbus-config operations, soc-camera client bus-param operations and supporting code can now be removed. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-04[media] V4L: soc-camera: compatible bus-width flagsGuennadi Liakhovetski1-6/+6
With the new subdevice media-bus configuration methods bus-width is not configured along with other bus parameters, instead, it is derived from the data format. With those methods it is convenient to specify supported bus-widths in the platform data as (1 << (width - 1)). We redefine SOCAM_DATAWIDTH_* flags to use the same convention to make platform data seemlessly reusable. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-11-04[media] V4L: soc-camera: add helper functions for new bus configuration typeGuennadi Liakhovetski1-2/+4
Add helper functions to process the new media bus configuration type similar to soc_camera_apply_sensor_flags() and soc_camera_bus_param_compatible(). Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-28[media] V4L: soc-camera: remove soc-camera bus and devices on itGuennadi Liakhovetski1-11/+8
Now that v4l2 subdevices have got their own device objects, having one more device in soc-camera clients became redundant and confusing. This patch removes those devices and the soc-camera bus, they used to reside on. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-28[media] V4L: soc-camera: un-export the soc-camera busGuennadi Liakhovetski1-5/+3
The soc-camera bus is now completely local again. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-28[media] V4L: soc-camera: remove now unused soc-camera specific PM hooksGuennadi Liakhovetski1-2/+0
soc-camera host drivers shall be implementing their PM, using standard kernel methods, soc-camera specific hooks can die. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-28[media] V4L: soc-camera: remove several now unused soc-camera client operationsGuennadi Liakhovetski1-3/+0
This patch removes .enum_input(), .suspend() and .resume() soc-camera client operations. Functionality, provided by .enum_input(), if needed, can be implemented using the v4l2-subdev API. As for .suspend() and .resume(), the only client driver, implementing these methods has been mt9m111, and the only host driver, using them has been pxa-camera. Now that both those drivers have been converted to the standard subdev .s_power() operation, .suspend() and .resume() can be removed. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-07-28[media] V4L: soc-camera: MIPI flags are not sensor flagsGuennadi Liakhovetski1-6/+6
SOCAM_MIPI_[1234]LANE flags are not board-specific sensor flags, they are bus configuration flags. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-05-20[media] V4L: soc-camera: add MIPI bus flagsKassey Li1-1/+9
Signed-off-by: Kassey Lee <ygli@marvell.com> Signed-off-by: Qing Xu <qingx@marvell.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-05-20[media] V4L: soc-camera: add a livecrop host operationGuennadi Liakhovetski1-0/+5
Add an soc-camera host livecrop operation to implement live zoom. If a host driver implements it, it should take care to preserve output frame format, then live crop doesn't break streaming. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-23[media] v4l: soc-camera: Store negotiated buffer settingsSergio Aguirre1-0/+2
This fixes the problem in which a host driver sets a personalized sizeimage or bytesperline field, and gets ignored when doing G_FMT. Signed-off-by: Sergio Aguirre <saaguirre@ti.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] V4L: soc-camera: add helper functions for videobuf queue handlingGuennadi Liakhovetski1-0/+10
Add two helper inline functions to retrieve soc-camera device context from videobuf and videobuf2 queue pointers. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] V4L: soc-camera: extend to also support videobuf2Guennadi Liakhovetski1-1/+10
Extend soc-camera core to also support the videobuf2 API. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2011-03-22[media] V4L: soc-camera: add enum-frame-size ioctlQing Xu1-0/+1
add vidioc_enum_framesizes implementation, follow default_g_parm() and g_mbus_fmt() method Signed-off-by: Qing Xu <qingx@marvell.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-12-31[media] soc_camera: Add the ability to bind regulators to soc_camedra devicesAlberto Panizzo1-0/+5
In certain machines, camera devices are supplied directly by a number of regulators. This patch add the ability to drive these regulators directly by the soc_camera driver. Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-10-21V4L/DVB: soc-camera: allow only one video queue per deviceGuennadi Liakhovetski1-5/+4
Multiple user-space application instances can open the same video device, but it only makes sense for one of them to manage the videobuffer queue and set video format of the device. Restrict soc-camera respectively. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-08-02V4L/DVB: V4L2: soc-camera: export soc-camera bus type for notificationsGuennadi Liakhovetski1-0/+3
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-06-01V4L/DVB: v4l2-subdev.h: fix enum_mbus_fmt prototypeHans Verkuil1-1/+1
enum_mbus_fmt received an index argument that was defined as an int instead of an unsigned int. This is now fixed. This had the knock-on effect that the index argument in the callback get_formats in soc_camera.h also had to be changed to unsigned int. Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-05-18V4L/DVB: soc-camera: add runtime pm support for subdevicesMauro Carvalho Chehab1-0/+8
To save power soc-camera powers subdevices down, when they are not in use, if this is supported by the platform. However, the V4L standard dictates, that video nodes shall preserve configuration between uses. This requires runtime power management, which is implemented by this patch. It allows subdevice drivers to specify their runtime power-management methods, by assigning a type to the video device. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-05-18V4L/DVB: The first two parameters of soc_camera_limit_side() are usually ↵Márton Németh1-2/+2
pointers to struct v4l2_rect elements. They are signed, so adjust the prototype accordingly This will remove the following sparse warning (see "make C=1"): * incorrect type in argument 1 (different signedness) expected unsigned int *start got signed int *<noident> as well as a couple more signedness mismatches. Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26soc-camera: add support for VIDIOC_S_PARM and VIDIOC_G_PARM ioctlsGuennadi Liakhovetski1-0/+2
Just pass VIDIOC_S_PARM and VIDIOC_G_PARM down to host drivers. So far no special handling in soc-camera core. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-16V4L/DVB (13659): soc-camera: convert to the new mediabus APIGuennadi Liakhovetski1-19/+6
Convert soc-camera core and all soc-camera drivers to the new mediabus API. This also takes soc-camera client drivers one step closer to also be usable with generic v4l2-subdev host drivers. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-16V4L/DVB (13648): soc-camera: add a private field to struct soc_camera_linkGuennadi Liakhovetski1-0/+2
Up to now, if a client driver needed platform data apart from those contained in struct soc_camera_link, it had to embed the struct into its own object. This makes the use of such a driver in configurations other than soc-camera Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-16V4L/DVB (13644): v4l: add new v4l2-subdev sensor operations, use ↵Guennadi Liakhovetski1-1/+0
g_skip_top_lines in soc-camera Introduce new v4l2-subdev sensor operations, move .enum_framesizes() and .enum_frameintervals() methods to it, add a new .g_skip_top_lines() method and switch soc-camera to use it instead of .y_skip_top soc_camera_device member, which can now be removed. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl> Reviewed-by: Sergio Aguirre <saaguirre@ti.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-12-16V4L/DVB (13643): soc-camera: remove no longer needed struct membersGuennadi Liakhovetski1-2/+0
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12536): soc-camera: remove .gain and .exposure struct ↵Guennadi Liakhovetski1-7/+10
soc_camera_device members This makes the soc-camera interface for V4L2 subdevices thinner yet. Handle gain and exposure internally in each driver just like all other controls. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12535): soc-camera: remove .init() and .release() methods from ↵Guennadi Liakhovetski1-4/+0
struct soc_camera_ops Remove unneeded soc-camera operations, this also makes the soc-camera API to v4l2 subdevices thinner. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12534): soc-camera: V4L2 API compliant scaling (S_FMT) and cropping ↵Guennadi Liakhovetski1-2/+19
(S_CROP) The initial soc-camera scaling and cropping implementation turned out to be incompliant with the V4L2 API, e.g., it expected the user to specify cropping in output window pixels, instead of input window pixels. This patch converts the soc-camera core and all drivers to comply with the standard. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12530): soc-camera: switch to using v4l2_subdev_call()Guennadi Liakhovetski1-4/+10
Use v4l2_subdev_call() instead of v4l2_device_call_until_err() in all host drivers and in soc-camera core. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12529): soc-camera: switch to s_crop v4l2-subdev video operationGuennadi Liakhovetski1-2/+1
Remove set_crop soc-camera device method and switch to s_crop from v4l2-subdev video operations. Also extend non-i2c drivers to also hold a pointer to their v4l2-subdev instance in control device driver-data, i.e., in dev_get_drvdata((struct device *)to_soc_camera_control(icd)) Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12521): soc-camera: use .s_std() from struct v4l2_subdev_core_opsGuennadi Liakhovetski1-1/+0
Remove .set_std() method from struct soc_camera_ops, use .s_std() from struct v4l2_subdev_core_ops instead. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12519): soc-camera: put pixel format initialisation back in probe, ↵Guennadi Liakhovetski1-0/+7
add .put_formats() The move of format translation initialisation into soc_camera_open() was temporary for the soc-camera as platform driver intermediate step, put it back into soc_camera_probe(). Also add a .put_formats() method to soc_camera_host_ops to free any resources host driver might have allocated in .get_formats(). Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12515): soc-camera: use struct v4l2_rect in struct soc_camera_deviceGuennadi Liakhovetski1-8/+2
Switch to using struct v4l2_rect in struct soc_camera_device for uniformity and simplicity. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12513): soc-camera: add support for camera-host controlsGuennadi Liakhovetski1-0/+4
Until now soc-camera only supported client (sensor) controls. This patch enables camera-host drivers to implement their own controls too. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12510): soc-camera: (partially) convert to v4l2-(sub)dev APIGuennadi Liakhovetski1-17/+6
Convert the soc-camera framework to use the v4l2-(sub)dev API. Start using v4l2-subdev operations. Only a part of the interface between the soc_camera core, soc_camera host drivers on one side and soc_camera device drivers on the other side is replaced so far. The rest of the interface will be replaced in incremental steps, and will require extensions and, possibly, modifications to the v4l2-subdev code. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12506): soc-camera: convert to platform deviceGuennadi Liakhovetski1-11/+16
Convert soc-camera core and all drivers to platform device API. We already converted platforms to register a platform device for each soc-camera client, now we remove the compatibility code and switch completely to the new scheme. This is a preparatory step for the v4l2-subdev conversion. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-09-19V4L/DVB (12504): soc-camera: prepare soc_camera_platform.c and its users for ↵Guennadi Liakhovetski1-0/+6
conversion soc_camera_platform.c is only used by y SuperH ap325rxa board. This patch converts soc_camera_platform.c and its users for the soc-camera platform- device conversion and also extends soc-camera core to handle non-I2C cameras. Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-17V4L/DVB (11705): soc-camera: prepare for the platform driver conversionGuennadi Liakhovetski1-0/+5
Add a platform driver to soc_camera.c. This way we preserve backwards compatibility with existing platforms and can start converting them one by one to the new platform-device soc-camera interface. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-17V4L/DVB (11609): soc-camera: remove an extra device generation from struct ↵Guennadi Liakhovetski1-2/+2
soc_camera_host Make camera devices direct children of host platform devices, move the inheritance management into the soc_camera.c core driver. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-06-17V4L/DVB (11607): soc-camera: add a free_bus method to struct soc_camera_linkGuennadi Liakhovetski1-0/+1
Currently pcm990 camera bus-width management functions request a GPIO and never free it again. With this approach the GPIO extender driver cannot be unloaded once camera drivers have been loaded, also unloading theb i2c-pxa bus driver produces errors, because the GPIO extender driver cannot unregister properly. Another problem is, that if camera drivers are once loaded before the GPIO extender driver, the platform code marks the GPIO unavailable and only a reboot helps to recover. Adding an explicit free_bus method and using it in mt9m001 and mt9v022 drivers fixes these problems. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Eric Miao <eric.miao@marvell.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (11034): soc-camera: remove now unused gpio member of struct ↵Sascha Hauer1-2/+0
soc_camera_link Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (11030): soc-camera: add board hook to specify the buswidth for ↵Sascha Hauer1-0/+7
camera sensors Camera sensors have a native bus width say support, but on some boards not all sensor data lines are connected to the image interface and thus support a different bus width than the sensors native one. Some boards even have a bus driver which dynamically switches between different bus widths with a GPIO. This patch adds a hook which board code can use to support different bus widths. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (11027): soc-camera: configure drivers with a default format at ↵Guennadi Liakhovetski1-0/+1
probe time Currently soc-camera doesn't set up any image format without an explicit S_FMT. According to the API this should be supported, for example, capture-example.c from v4l2-apps by default doesn't issue an S_FMT. This patch moves negotiating of available host-camera format translations to probe() time, and restores the state from the last close() on the next open(). This is needed for some drivers, which power down or reset hardware after the last user closes the interface. This patch also has a nice side-effect of avoiding multiple allocation anf freeing of format translation tables. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2009-03-30V4L/DVB (11024): soc-camera: separate S_FMT and S_CROP operationsGuennadi Liakhovetski1-2/+4
As host and camera drivers become more complex, differences between S_FMT and S_CROP functionality grow, this patch separates them. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>