There are several issues on the documentation:
- the media.h header were not properly referenced;
- verbatim expressions were not properly marked as such;
- struct member references were wrong;
- some notes were not using the right markup;
- a comment that were moved to the kernel-doc markup were
duplicated as a comment inside the struct media_entity;
- some args were not pointing to the struct they're using;
- macros weren't documented.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The clock framework is generally so well supported that there's no reason
to keep this one around.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Switch from the old gpio API to the new descriptor based gpiod API.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This is really configuration to the driver originating from DT or
elsewhere. Do not call it platform data.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The v4l2_subdev_core_ops .registered_async callback was added to notify
a subdev when its entity has been registered with the media device, to
allow for example to modify the media graph (i.e: adding entities/links).
But that's not needed since there is already a .registered callback in
struct v4l2_subdev_internal_ops that's called after the entity has been
registered with the media device in v4l2_device_register_subdev().
Suggested-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The macro gobj_to_pad() is defined twice in media-entity.h.
Let's remove one.
Signed-off-by: Liu Ying <gnuiyl@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The function media_entity_enum_empty() returns true when the bitmap
of the input parameter media entity enumeration is empty instead of marked.
This patch corrects the return value description of the function.
Signed-off-by: Liu Ying <gnuiyl@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The macro gobj_to_link() is defined twice in media-entity.h.
Let's remove one.
Signed-off-by: Liu Ying <gnuiyl@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Always return an ERR_PTR() instead of NULL.
This makes the behavior of alloc, get_userptr and attach_dmabuf the
same.
Update the documentation in videobuf2-core.h as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The old cropcap video op is now only used to pass the pixelaspect
ratio, so rename it.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Replace all calls to g/s_crop by calls to the get/set_selection pad ops.
Remove the old g/s_crop video ops since they are now no longer used.
The cropcap video op is now only used to pass pixelaspect information,
and is only needed if the pixelaspect is not 1:1.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The sh_mobile_csi2 isn't used anymore (was it ever?), so remove it.
Especially since the soc-camera framework is being deprecated.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Some touch controllers send out touch data in a similar way to a
greyscale frame grabber.
Add new device type VFL_TYPE_TOUCH:
- This uses a new device prefix v4l-touch for these devices, to stop
generic capture software from treating them as webcams. Otherwise,
touch is treated similarly to video capture.
- Add V4L2_INPUT_TYPE_TOUCH
- Add MEDIA_INTF_T_V4L_TOUCH
- Add V4L2_CAP_TOUCH to indicate device is a touch device
Add formats:
- V4L2_TCH_FMT_DELTA_TD16 for signed 16-bit touch deltas
- V4L2_TCH_FMT_DELTA_TD08 for signed 16-bit touch deltas
- V4L2_TCH_FMT_TU16 for unsigned 16-bit touch data
- V4L2_TCH_FMT_TU08 for unsigned 8-bit touch data
This support will be used by:
- Atmel maXTouch (atmel_mxt_ts)
- Synaptics RMI4.
- sur40
Signed-off-by: Nick Dyer <nick@shmanahar.org>
Tested-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This lock will be used to protect more than just the fhs list.
So rename it to just 'lock'.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The dma-mapping core and the implementations do not change the DMA
attributes passed by pointer. Thus the pointer can point to const data.
However the attributes do not have to be a bitfield. Instead unsigned
long will do fine:
1. This is just simpler. Both in terms of reading the code and setting
attributes. Instead of initializing local attributes on the stack
and passing pointer to it to dma_set_attr(), just set the bits.
2. It brings safeness and checking for const correctness because the
attributes are passed by value.
Semantic patches for this change (at least most of them):
virtual patch
virtual context
@r@
identifier f, attrs;
@@
f(...,
- struct dma_attrs *attrs
+ unsigned long attrs
, ...)
{
...
}
@@
identifier r.f;
@@
f(...,
- NULL
+ 0
)
and
// Options: --all-includes
virtual patch
virtual context
@r@
identifier f, attrs;
type t;
@@
t f(..., struct dma_attrs *attrs);
@@
identifier r.f;
@@
f(...,
- NULL
+ 0
)
Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Acked-by: Mark Salter <msalter@redhat.com> [c6x]
Acked-by: Jesper Nilsson <jesper.nilsson@axis.com> [cris]
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> [drm]
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Joerg Roedel <jroedel@suse.de> [iommu]
Acked-by: Fabien Dessenne <fabien.dessenne@st.com> [bdisp]
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com> [vb2-core]
Acked-by: David Vrabel <david.vrabel@citrix.com> [xen]
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> [xen swiotlb]
Acked-by: Joerg Roedel <jroedel@suse.de> [iommu]
Acked-by: Richard Kuo <rkuo@codeaurora.org> [hexagon]
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Acked-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> [s390]
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> [avr32]
Acked-by: Vineet Gupta <vgupta@synopsys.com> [arc]
Acked-by: Robin Murphy <robin.murphy@arm.com> [arm64 and dma-iommu]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sphinx can't handle well typedefs. Change two typedef
occurrences, in order to cleanup some of such warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Several functions weren't documented. Document them all.
While here, makes checkpatch.pl happy.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add documentation for v4l2-dev.h, and put it at v4l2-framework.rst,
where struct video_device is currently documented.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Not all functions at v4l2-common.h are documented. Add
documentation for some other ones.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There are some subdev-specific functions at v4l2-common.h
that are mentioned at v4l2-subdev.rst.
Document them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There are one enum and 4 functions undocumented there.
Document them. That will fix the broken links at the
v4l2-subdev.rst file.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This header were poorly documented, and weren't using the
kernel-doc format. Document everything but the macros using
the right format.
While here, also fix the other comments to match the
Linux CodingStyle.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The functions at v4l2-device.h are not using the proper
markups. Add it, and include at the v4l2-core.rst.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The Sphinx note markup for media_remove_intf_links() is wrong:
there's a missing space.
While here, let's auto-numerate the two notes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Fix all remaining media warnings with ReST that are fixable
without changing at the Sphinx code.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* patchwork: (1492 commits)
[media] cec: always check all_device_types and features
[media] cec: poll should check if there is room in the tx queue
[media] vivid: support monitor all mode
[media] cec: fix test for unconfigured adapter in main message loop
[media] cec: limit the size of the transmit queue
[media] cec: zero unused msg part after msg->len
[media] cec: don't set fh to NULL in CEC_TRANSMIT
[media] cec: clear all status fields before transmit and always fill in sequence
[media] cec: CEC_RECEIVE overwrote the timeout field
[media] cxd2841er: Reading SNR for DVB-C added
[media] cxd2841er: Reading BER and UCB for DVB-C added
[media] cxd2841er: fix switch-case for DVB-C
[media] cxd2841er: fix signal strength scale for ISDB-T
[media] cxd2841er: adjust the dB scale for DVB-C
[media] cxd2841er: provide signal strength for DVB-C
[media] cxd2841er: fix BER report via DVBv5 stats API
[media] mb86a20s: apply mask to val after checking for read failure
[media] airspy: fix error logic during device register
[media] s5p-cec/TODO: add TODO item
[media] cec/TODO: drop comment about sphinx documentation
...
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The size of the transmit queue was unlimited, which meant that
in non-blocking mode you could flood the CEC adapter with messages
to be transmitted.
Limit this to 18 messages.
Also print the number of pending transmits and the timeout value
in the status debugfs file.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
There were lots of issues at the media controller side,
after the conversion:
- Some documentation at the header files weren't using the
kernel-doc start block;
- Now, the C files with the exported symbols also need to be
added. So, all headers need to be included twice: one to
get the structs/enums/.. and another one for the functions;
- Notes should use the ReST tag, as kernel-doc doesn't
recognizes it anymore;
- Identation needs to be fixed, as ReST uses it to identify
when a format "tag" ends.
- Fix the cross-references at the media controller description.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The conversion from DocBook lead into some conversion issues,
basically due to the lack of proper support at kernel-doc.
So, address them:
- Now, the C files with the exported symbols also need to be
added. So, all headers need to be included twice: one to
get the structs/enums/.. and another one for the functions;
- Notes should use the ReST tag, as kernel-doc doesn't
recognizes it anymore;
- Identation needs to be fixed, as ReST uses it to identify
when a format "tag" ends.
- kernel-doc doesn't escape things like *pointer, so we
need to manually add a escape char before it.
- On some cases, kernel-doc conversion requires violating
the 80-cols, as otherwise it won't properly parse the
source code.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The kernel-doc script is now broken if it doesn't find all
exported symbols documented.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Move the contents of the media section at
DocBooks/DocBook/device-drivers.tmpl to a new ReST book.
For now, the contents is kept as-is. Next patches will fix
the warnings and add cross-references that were removed due to
the conversion.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Instead of hardcoding a timeout, let userspace change it dynamically
by adding a s_timeout ops.
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
* topic/vsp1: (36 commits)
[media] v4l: vsp1: wpf: Add flipping support
[media] v4l: vsp1: rwpf: Support runtime modification of controls
[media] v4l: vsp1: Simplify alpha propagation
[media] v4l: vsp1: clu: Support runtime modification of controls
[media] v4l: vsp1: lut: Support runtime modification of controls
[media] v4l: vsp1: Support runtime modification of controls
[media] v4l: vsp1: Add Cubic Look Up Table (CLU) support
[media] v4l: vsp1: lut: Expose configuration through a control
[media] v4l: vsp1: lut: Initialize the mutex
[media] v4l: vsp1: dl: Don't free fragments with interrupts disabled
[media] v4l: vsp1: Set entities functions
[media] v4l: vsp1: Don't create LIF entity when the userspace API is enabled
[media] v4l: vsp1: Don't register media device when userspace API is disabled
[media] v4l: vsp1: Base link creation on availability of entities
[media] media: Add video statistics computation functions
[media] media: Add video processing entity functions
[media] v4l: vsp1: sru: Fix intensity control ID
[media] v4l: vsp1: Stop the pipeline upon the first STREAMOFF
[media] v4l: vsp1: Constify operation structures
[media] v4l: vsp1: pipe: Fix typo in comment
...
These platform_data fields are no longer needed, drop them.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
These are no longer used (finally!), so remove them.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Converts the dtt200u DVB USB driver over to the rc-core
infrastructure for its handling of IR remotes. This device can receive
generic NEC / NEC Extended signals and the switch to the newer core
enables the easy use of tools such as ir-keytable to modify the active
key map.
Signed-off-by: Jonathan McDowell <noodles@earth.li>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Make this a proper typed array. Drop the old allocate context code since
that is no longer used.
Note that the memops functions now get a struct device pointer instead of
the struct device ** that was there initially (actually a void pointer to
a struct containing only a struct device pointer).
This code is now a lot cleaner.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Stop using alloc_ctx and just fill in the device pointer.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: Scott Jiang <scott.jiang.linux@gmail.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The allocation context is nothing more than a per-plane device pointer
to use when allocating buffers. So just provide a dev pointer in vb2_queue
for that purpose and drivers can skip allocating/releasing/filling in
the allocation context unless they require different per-plane device
pointers as used by some Samsung SoCs.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: Florian Echtler <floe@butterbrot.org>
Cc: Federico Vaga <federico.vaga@gmail.com>
Cc: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Cc: Scott Jiang <scott.jiang.linux@gmail.com>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Fabien Dessenne <fabien.dessenne@st.com>
Acked-by: Benoit Parrot <bparrot@ti.com>
Cc: Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ludovic Desroches <ludovic.desroches@atmel.com>
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Make the dma attributes struct part of vb2_queue. This greatly simplifies
the remainder of the patch series since the dma_contig alloc context is
now (as before) just a struct device pointer.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add CEC support to the adv7511 driver.
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
[k.debski@samsung.com: Merged changes from CEC Updates commit by Hans Verkuil]
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The added HDMI CEC framework provides a generic kernel interface for
HDMI CEC devices.
Note that the CEC framework is added to staging/media and that the
cec.h and cec-funcs.h headers are not exported yet. While the kABI
is mature, I would prefer to allow the uABI some more time before
it is mainlined in case it needs more tweaks.
This adds the cec-core.c, media/cec.h and cec-priv.h sources.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
[k.debski@samsung.com: Merged CEC Updates commit by Hans Verkuil]
[k.debski@samsung.com: Merged Update author commit by Hans Verkuil]
[k.debski@samsung.com: code cleanup and fixes]
[k.debski@samsung.com: add missing CEC commands to match spec]
[k.debski@samsung.com: add RC framework support]
[k.debski@samsung.com: move and edit documentation]
[k.debski@samsung.com: add vendor id reporting]
[k.debski@samsung.com: reorder of API structs and add reserved fields]
[k.debski@samsung.com: fix handling of events and fix 32/64bit timespec problem]
[k.debski@samsung.com: add sequence number handling]
[k.debski@samsung.com: add passthrough mode]
[k.debski@samsung.com: fix CEC defines, add missing CEC 2.0 commands]
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The cec-edid module contains helper functions to find and manipulate
the CEC physical address inside an EDID. Even if the CEC support itself
is disabled, drivers will still need these functions. Which is the
reason this is module is separate from the upcoming CEC framework.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The comments for the unlocked v4l2_ctrl_s_ctrl* functions were wrong (copy
and pasted from the locked variants). Fix this, since it is confusing.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add handling of remote control events coming from the HDMI CEC bus
and the new protocol required for that.
Signed-off-by: Kamil Debski <kamil@wypas.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The DRM driver has switched to the new API, remove the deprecated macros
and inline wrapper.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The vsp1_du_atomic_update_ext() function takes 7 RPF configuration
parameters, and more will likely be added later. This makes the code
difficult to read and error-prone as multiple parameters have the same
type.
Make the API safer and easier to extend in the future by grouping all
parameters in a structure. Use macro magic to ease the transition to the
new function by allowing the old and new functions to be called using
the same name. The macros and static inline wrapper will be removed as
soon as the caller is updated.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
The FCP is a companion module of video processing modules in the
Renesas R-Car Gen3 SoCs. It provides data compression and decompression,
data caching, and conversion of AXI transactions in order to reduce the
memory bandwidth.
The driver is not meant to be used standalone but provides an API to the
video processing modules to control the FCP.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Two parameters were documented with a wrong name, and a struct
device pointer description was missing.
That caused the following warnings, when building documentation:
include/media/media-devnode.h:102: warning: No description found for parameter 'media_dev'
include/media/media-devnode.h:126: warning: No description found for parameter 'mdev'
include/media/media-devnode.h:126: warning: Excess function parameter 'media_dev' description in 'media_devnode_register'
Rename the description, to match the function parameter and fix
Documentation.
No funcional changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Media devnode open/ioctl could be in progress when media device unregister
is initiated. System calls and ioctls check media device registered status
at the beginning, however, there is a window where unregister could be in
progress without changing the media devnode status to unregistered.
process 1 process 2
fd = open(/dev/media0)
media_devnode_is_registered()
(returns true here)
media_device_unregister()
(unregister is in progress
and devnode isn't
unregistered yet)
...
ioctl(fd, ...)
__media_ioctl()
media_devnode_is_registered()
(returns true here)
...
media_devnode_unregister()
...
(driver releases the media device
memory)
media_device_ioctl()
(By this point
devnode->media_dev does not
point to allocated memory.
use-after free in in mutex_lock_nested)
BUG: KASAN: use-after-free in mutex_lock_nested+0x79c/0x800 at addr
ffff8801ebe914f0
Fix it by clearing register bit when unregister starts to avoid the race.
process 1 process 2
fd = open(/dev/media0)
media_devnode_is_registered()
(could return true here)
media_device_unregister()
(clear the register bit,
then start unregister.)
...
ioctl(fd, ...)
__media_ioctl()
media_devnode_is_registered()
(return false here, ioctl
returns I/O error, and
will not access media
device memory)
...
media_devnode_unregister()
...
(driver releases the media device
memory)
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Suggested-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reported-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Tested-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
struct media_devnode is currently embedded at struct media_device.
While this works fine during normal usage, it leads to a race
condition during devnode unregister. the problem is that drivers
assume that, after calling media_device_unregister(), the struct
that contains media_device can be freed. This is not true, as it
can't be freed until userspace closes all opened /dev/media devnodes.
In other words, if the media devnode is still open, and media_device
gets freed, any call to an ioctl will make the core to try to access
struct media_device, with will cause an use-after-free and even GPF.
Fix this by dynamically allocating the struct media_devnode and only
freeing it when it is safe.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Along all media controller code, "mdev" is used to represent
a pointer to struct media_device, and "devnode" for a pointer
to struct media_devnode.
However, inside media-devnode.[ch], "mdev" is used to represent
a pointer to struct media_devnode.
This is very confusing and may lead to development errors.
So, let's change all occurrences at media-devnode.[ch] to
also use "devnode" for such pointers.
This patch doesn't make any functional changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
For the third time in three years, I'm changing my e-mail at
Samsung. That's bad, as it may stop communications with me for
a while. So, this time, I'll also the mchehab@kernel.org e-mail,
as it remains stable since ever.
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Add a helper function for device drivers to set DMA's max_seg_size.
Setting it to largest possible value lets DMA-mapping API always create
contiguous mappings in DMA address space. This is essential for all
devices, which use dma-contig videobuf2 memory allocator and shared
buffers.
Till now, the only case when vb2-dma-contig really 'worked' was a case
where userspace provided USERPTR buffer, which was in fact mmaped
contiguous buffer from the other v4l2/drm device. Also DMABUF made of
contiguous buffer worked only when its exporter did not split it into
several chunks in the scatter-list. Any other buffer failed, regardless
of the arch/platform used and the presence of the IOMMU of the device bus.
This patch provides interface to fix this issue.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
struct ir_raw_event currently has a size of 12 bytes on most (all?)
architectures. This can be reduced to 8 bytes whilst maintaining
full backwards compatibility.
This saves 2KB in size of struct ir_raw_event_ctrl (as element
kfifo is reduced by 512 * 4 bytes) and it allows to copy the
full struct ir_raw_event with a single 64 bit operation.
Successfully tested with the Nuvoton driver and successfully
compile-tested with the ene_ir driver (as it uses the carrier /
duty_cycle elements).
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Merge tag 'v4.6-rc6' into patchwork
Linux 4.6-rc6
* tag 'v4.6-rc6': (762 commits)
Linux 4.6-rc6
EDAC: i7core, sb_edac: Don't return NOTIFY_BAD from mce_decoder callback
Documentation/sysctl/vm.txt: update numa_zonelist_order description
lib/stackdepot.c: allow the stack trace hash to be zero
rapidio: fix potential NULL pointer dereference
mm/memory-failure: fix race with compound page split/merge
ocfs2/dlm: return zero if deref_done message is successfully handled
Ananth has moved
kcov: don't profile branches in kcov
kcov: don't trace the code coverage code
mm: wake kcompactd before kswapd's short sleep
.mailmap: add Frank Rowand
mm/hwpoison: fix wrong num_poisoned_pages accounting
mm: call swap_slot_free_notify() with page lock held
mm: vmscan: reclaim highmem zone if buffer_heads is over limit
numa: fix /proc/<pid>/numa_maps for THP
mm/huge_memory: replace VM_NO_THP VM_BUG_ON with actual VMA check
mailmap: fix Krzysztof Kozlowski's misspelled name
thp: keep huge zero page pinned until tlb flush
mm: exclude HugeTLB pages from THP page_mapped() logic
...
When using a device is read/write mode, vb2 does not handle properly the
first select/poll operation.
The reason for this, is that when this code has been refactored, some of
the operations have changed their order, and now fileio emulator is not
started.
The reintroduced check to the core is enabled by a quirk flag, that
avoids this check by other subsystems like DVB.
Fixes: 49d8ab9fea ("media] media: videobuf2: Separate vb2_poll()")
Reported-by: Dimitrios Katsaros <patcherwork@gmail.com>
Cc: Junghak Sung <jh1009.sung@samsung.com>
Cc: <stable@vger.kernel.org> # for v4.5 and up
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The test pattern generator will be used by other drivers as the virtual
media controller (vimc)
Signed-off-by: Helen Mae Koike Fornazier <helen.koike@collabora.co.uk>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This makes it easier to share this code with any driver that needs to
manipulate the v4l2_rect datastructure.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The v4l2_device_call_* defines filter subdevs based on the grp_id value.
But some drivers use a bitmask, so instead of filtering by grp_id == value,
you want to filter by grp_id & value.
Make variants of these defines to do this.
The 'has_op' define has been extended to have a grp_id argument as well, and
a mask variant has been added.
This extra argument required a change to go7007.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Those callbacks are called with the media_device.graph_mutex held.
Add a note about that, as the code called by those notifiers should
not be touching in the mutex.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Right now, the lock schema for media_device struct is messy,
since sometimes, it is protected via a spin lock, while, for
media graph traversal, it is protected by a mutex.
Solve this conflict by always using a mutex.
As a side effect, this prevents a bug when the media notifiers
is called at atomic context, while running the notifier callback:
BUG: sleeping function called from invalid context at mm/slub.c:1289
in_atomic(): 1, irqs_disabled(): 0, pid: 3479, name: modprobe
4 locks held by modprobe/3479:
#0: (&dev->mutex){......}, at: [<ffffffff81ce8933>] __driver_attach+0xa3/0x160
#1: (&dev->mutex){......}, at: [<ffffffff81ce8941>] __driver_attach+0xb1/0x160
#2: (register_mutex#5){+.+.+.}, at: [<ffffffffa10596c7>] usb_audio_probe+0x257/0x1c90 [snd_usb_audio]
#3: (&(&mdev->lock)->rlock){+.+.+.}, at: [<ffffffffa0e6051b>] media_device_register_entity+0x1cb/0x700 [media]
CPU: 2 PID: 3479 Comm: modprobe Not tainted 4.5.0-rc3+ #49
Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0350.2015.0812.1722 08/12/2015
0000000000000000 ffff8803b3f6f288 ffffffff81933901 ffff8803c4bae000
ffff8803c4bae5c8 ffff8803b3f6f2b0 ffffffff811c6af5 ffff8803c4bae000
ffffffff8285d7f6 0000000000000509 ffff8803b3f6f2f0 ffffffff811c6ce5
Call Trace:
[<ffffffff81933901>] dump_stack+0x85/0xc4
[<ffffffff811c6af5>] ___might_sleep+0x245/0x3a0
[<ffffffff811c6ce5>] __might_sleep+0x95/0x1a0
[<ffffffff8155aade>] kmem_cache_alloc_trace+0x20e/0x300
[<ffffffffa0e66e3d>] ? media_add_link+0x4d/0x140 [media]
[<ffffffffa0e66e3d>] media_add_link+0x4d/0x140 [media]
[<ffffffffa0e69931>] media_create_pad_link+0xa1/0x600 [media]
[<ffffffffa0fe11b3>] au0828_media_graph_notify+0x173/0x360 [au0828]
[<ffffffffa0e68a6a>] ? media_gobj_create+0x1ba/0x480 [media]
[<ffffffffa0e606fb>] media_device_register_entity+0x3ab/0x700 [media]
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Make the global alpha multiplier of DRM planes configurable. All the
necessary infrastructure is there, we just need to store the alpha value
passed through the DRM API.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Make the Z-order of planes configurable by assigning RPFs to BRU inputs
dynamically based on the Z-order position.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The functions are void, make the declaration match the definition.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add a new subdev operation to initialize a subdev pad config array, and
a helper function to allocate and initialize the array. This can be used
by bridge drivers to implement try format based on subdev pad
operations.
Signed-off-by: Laurent Pinchart <laurent.pinchart@linaro.org>
Acked-by: Vaibhav Hiremath <vaibhav.hiremath@linaro.org>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
All users of is_media_entity_v4l2_io() (the exynos4-is, omap3isp,
davince_vpfe and omap4iss drivers and the v4l2-mc power management code)
use the function to check whether entities are video_device instances,
either to ensure they can cast the entity to a struct video_device, or
to count the number of video nodes users.
The purpose of the function is thus to identify whether the media entity
instance is an instance of the video_device object, not to check whether
it can perform I/O. Rename it accordingly, we will introduce a more
specific is_media_entity_v4l2_io() check when needed.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Code that processes media entities can require knowledge of the
structure type that embeds a particular media entity instance in order
to cast the entity to the proper object type. This needs is shown by the
presence of the is_media_entity_v4l2_io and is_media_entity_v4l2_subdev
functions.
The implementation of those two functions relies on the entity function
field, which is both a wrong and an inefficient design, without even
mentioning the maintenance issue involved in updating the functions
every time a new entity function is added. Fix this by adding add an
obj_type field to the media entity structure to carry the information.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Instead of letting drivers fill in device_caps at querycap time,
let them fill it in when the video device is registered.
This has the advantage that in the future the v4l2 core can access
the video device's capabilities and take decisions based on that.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The number of planes in videobuf2 is specific to a buffer. In order to
verify that the planes array provided by the user is long enough, a new
vb2_buf_op is required.
Call __verify_planes_array() when the dequeued buffer is known. Return an
error to the caller if there was one, otherwise remove the buffer from the
done list.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: stable@vger.kernel.org # for v4.4 and later
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The comment is for the wrong function. Fix it.
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Pull ARM updates from Russell King:
"Another mixture of changes this time around:
- Split XIP linker file from main linker file to make it more
maintainable, and various XIP fixes, and clean up a resulting
macro.
- Decompressor cleanups from Masahiro Yamada
- Avoid printing an error for a missing L2 cache
- Remove some duplicated symbols in System.map, and move
vectors/stubs back into kernel VMA
- Various low priority fixes from Arnd
- Updates to allow bus match functions to return negative errno
values, touching some drivers and the driver core. Greg has acked
these changes.
- Virtualisation platform udpates form Jean-Philippe Brucker.
- Security enhancements from Kees Cook
- Rework some Kconfig dependencies and move PSCI idle management code
out of arch/arm into drivers/firmware/psci.c
- ARM DMA mapping updates, touching media, acked by Mauro.
- Fix places in ARM code which should be using virt_to_idmap() so
that Keystone2 can work.
- Fix Marvell Tauros2 to work again with non-DT boots.
- Provide a delay timer for ARM Orion platforms"
* 'for-linus' of git://ftp.arm.linux.org.uk/~rmk/linux-arm: (45 commits)
ARM: 8546/1: dma-mapping: refactor to fix coherent+cma+gfp=0
ARM: 8547/1: dma-mapping: store buffer information
ARM: 8543/1: decompressor: rename suffix_y to compress-y
ARM: 8542/1: decompressor: merge piggy.*.S and simplify Makefile
ARM: 8541/1: decompressor: drop redundant FORCE in Makefile
ARM: 8540/1: decompressor: use clean-files instead of extra-y to clean files
ARM: 8539/1: decompressor: drop more unneeded assignments to "targets"
ARM: 8538/1: decompressor: drop unneeded assignments to "targets"
ARM: 8532/1: uncompress: mark putc as inline
ARM: 8531/1: turn init_new_context into an inline function
ARM: 8530/1: remove VIRT_TO_BUS
ARM: 8537/1: drop unused DEBUG_RODATA from XIP_KERNEL
ARM: 8536/1: mm: hide __start_rodata_section_aligned for non-debug builds
ARM: 8535/1: mm: DEBUG_RODATA makes no sense with XIP_KERNEL
ARM: 8534/1: virt: fix hyp-stub build for pre-ARMv7 CPUs
ARM: make the physical-relative calculation more obvious
ARM: 8512/1: proc-v7.S: Adjust stack address when XIP_KERNEL
ARM: 8411/1: Add default SPARSEMEM settings
ARM: 8503/1: clk_register_clkdev: remove format string interface
ARM: 8529/1: remove 'i' and 'zi' targets
...
The newly added functions have an extra semicolon, which
prevents compilation, and they need to be marked inline:
In file included from ../include/media/tuner.h:23:0,
from ../drivers/media/tuners/tuner-simple.c:10:
../include/media/v4l2-mc.h:233:1: error: expected identifier or '(' before '{' token
Remove spurious return, remove copy-and-pasted semi-colons, add static
inline.
Fixes: a77bf7048a ("v4l2-mc.h: Add stubs for the V4L2 PM/pipeline routines")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Fix these warnings when CONFIG_MEDIA_CONTROLLER is not defined:
In file included from drivers/media/v4l2-core/v4l2-fh.c:32:0:
include/media/v4l2-mc.h:173:12: warning: 'v4l_enable_media_source' defined but not used [-Wunused-function]
static int v4l_enable_media_source(struct video_device *vdev)
^
include/media/v4l2-mc.h:183:12: warning: 'v4l_vb2q_enable_media_source' defined but not used [-Wunused-function]
static int v4l_vb2q_enable_media_source(struct vb2_queue *q)
^
In file included from include/media/tuner.h:23:0,
from drivers/media/tuners/tuner-types.c:9:
include/media/v4l2-mc.h:173:12: warning: 'v4l_enable_media_source' defined but not used [-Wunused-function]
static int v4l_enable_media_source(struct video_device *vdev)
^
include/media/v4l2-mc.h:178:13: warning: 'v4l_disable_media_source' defined but not used [-Wunused-function]
static void v4l_disable_media_source(struct video_device *vdev)
^
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
When the Media controller framework was merged, it was decided not to add
pipeline power management code for it was not seen generic. As a result, a
number of drivers have copied the same piece of code, with same bugfixes
done to them at different points of time (or not at all).
Add these functions to V4L2. Their use is optional for drivers.
[mchehab@osg.samsung.com: Fix merge conflicts]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Re-create the graph walk object as needed in order to have one large enough
available for all entities in the graph.
This enumeration is used for pipeline power management in the future.
[mchehab@osg.samsung.com: fix documentation bug:
" warning: bad line: graph_mutex"]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
.//include/media/v4l2-mc.h:138: warning: No description found for parameter 'vdev'
.//include/media/v4l2-mc.h:152: warning: No description found for parameter 'vdev'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
WARN_ON is used by this header file, but none of its direct includes
include asm/bug.h by way of linux/bug.h yet.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
As we want au0828 to use the core function to create the MC
graphs, use enum demod_pad_index instead of
enum au8522_media_pads.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The device initialization completes only after calling
input_register_device(). However, rc_open() can be called while
the device is being registered by the input/evdev core. So, we
can't expect that rc_dev->initialized to be true.
Change the logic to don't require initialized == true at rc_open
and change the type of initialized to be atomic.
this way, we can check for it earlier where it is really needed,
without needing to lock the mutex just for testing it.
Tested with nuvoton_cir driver on a NUC5i7RYB with CIR integrated on it.
Reported-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Fix these compiler warnings:
media-git/include/media/media-device.h: In function 'media_device_pci_init':
media-git/include/media/media-device.h:610:9: warning: 'return' with a value, in function returning void
return NULL;
^
media-git/include/media/media-device.h: In function '__media_device_usb_init':
media-git/include/media/media-device.h:618:9: warning: 'return' with a value, in function returning void
return NULL;
^
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add a new interfaces to be used by v4l-core to invoke enable
source and disable_source handlers in the media_device. The
enable_source helper function invokes the enable_source handler
to find media source entity connected to the entity and check
is it is available or busy. If source is available, link is
activated and pipeline is started. The disable_source helper
function invokes the disable_source handler to deactivate and
stop the pipeline.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add non-locking __media_entity_pipeline_start/stop()
interfaces to be called from code paths that hold the
graph_mutex.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add new fields to struct media_device to add enable_source, and
disable_source handlers, and source_priv to stash driver private
data that is used to run these handlers. The enable_source handler
finds source entity for the passed in entity and checks if it is
available. When link is found, it activates it. Disable source
handler deactivates the link.
Bridge driver is expected to implement and set these handlers.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add new interfaces to register and unregister entity_notify
hook to media device. These interfaces allow drivers to add
hooks to take appropriate actions when new entities get added
to a shared media device. For example, au0828 bridge driver
registers an entity_notify hook to create links as needed
between media graph nodes.
[mchehab@osg.samsung.com: simple comments should be /* and not /**]
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Right now, media_device_pci_init and media_device_usb_init does
media_device allocation internaly. That preents its usage when
the media_device struct is embedded on some other structure.
Move memory allocation outside it, to make it more generic.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Those ancillary functions could be called even when compiled
without V4L2 support, as warned by ktest build robot:
All errors (new ones prefixed by >>):
>> ERROR: "__v4l2_mc_usb_media_device_init" [drivers/media/usb/dvb-usb/dvb-usb.ko] undefined!
>> ERROR: "__v4l2_mc_usb_media_device_init" [drivers/media/usb/dvb-usb-v2/dvb_usb_v2.ko] undefined!
>> ERROR: "__v4l2_mc_usb_media_device_init" [drivers/media/usb/au0828/au0828.ko] undefined!
Also, there's nothing there that are specific to V4L2. So, move
those ancillary functions to MC core.
No functional changes. Just function rename.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add two API functions named vsp1_du_atomic_begin() and
vsp1_du_atomic_flush() to signal the start and end of an atomic update.
The vsp1_du_setup_rpf() function is renamed to vsp1_du_atomic_update()
for consistency.
With this new API, the driver will reprogram all modified inputs
atomically before restarting the video stream.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Implement internal control of the VSP pipeline to be used by the DU
DRM/KMS driver when using the VSP as an internal composer handled
through DRM/KMS only.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
On USB drivers, the dev struct is usually filled with the USB
device. That would mean that the name of the driver specified
by media_device.dev.driver.name would be "usb", instead of the
name of the actual driver that created the media entity.
Add an optional field at the internal struct to allow drivers
to override the driver name.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The mutex lock at rc_register_device() was added by commit 08aeb7c9a4
("[media] rc: add locking to fix register/show race").
It is meant to avoid race issues when trying to open a sysfs file while
the RC register didn't complete.
Adding a lock there causes troubles, as detected by the Kernel lock
debug instrumentation at the Kernel:
======================================================
[ INFO: possible circular locking dependency detected ]
4.5.0-rc3+ #46 Not tainted
-------------------------------------------------------
systemd-udevd/2681 is trying to acquire lock:
(s_active#171){++++.+}, at: [<ffffffff8171a115>] kernfs_remove_by_name_ns+0x45/0xa0
but task is already holding lock:
(&dev->lock){+.+.+.}, at: [<ffffffffa0724def>] rc_register_device+0xb2f/0x1450 [rc_core]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&dev->lock){+.+.+.}:
[<ffffffff8124817d>] lock_acquire+0x13d/0x320
[<ffffffff822de966>] mutex_lock_nested+0xb6/0x860
[<ffffffffa0721f2b>] show_protocols+0x3b/0x3f0 [rc_core]
[<ffffffff81cdaba5>] dev_attr_show+0x45/0xc0
[<ffffffff8171f1b3>] sysfs_kf_seq_show+0x203/0x3c0
[<ffffffff8171a6a1>] kernfs_seq_show+0x121/0x1b0
[<ffffffff81617c71>] seq_read+0x2f1/0x1160
[<ffffffff8171c911>] kernfs_fop_read+0x321/0x460
[<ffffffff815abc20>] __vfs_read+0xe0/0x3d0
[<ffffffff815ae90e>] vfs_read+0xde/0x2d0
[<ffffffff815b1d01>] SyS_read+0x111/0x230
[<ffffffff822e8636>] entry_SYSCALL_64_fastpath+0x16/0x76
-> #0 (s_active#171){++++.+}:
[<ffffffff81244f24>] __lock_acquire+0x4304/0x5990
[<ffffffff8124817d>] lock_acquire+0x13d/0x320
[<ffffffff81717d3a>] __kernfs_remove+0x58a/0x810
[<ffffffff8171a115>] kernfs_remove_by_name_ns+0x45/0xa0
[<ffffffff81721592>] remove_files.isra.0+0x72/0x190
[<ffffffff8172174b>] sysfs_remove_group+0x9b/0x150
[<ffffffff81721854>] sysfs_remove_groups+0x54/0xa0
[<ffffffff81cd97d0>] device_remove_attrs+0xb0/0x140
[<ffffffff81cdb27c>] device_del+0x38c/0x6b0
[<ffffffffa0724b8b>] rc_register_device+0x8cb/0x1450 [rc_core]
[<ffffffffa1326a7b>] dvb_usb_remote_init+0x66b/0x14d0 [dvb_usb]
[<ffffffffa1321c81>] dvb_usb_device_init+0xf21/0x1860 [dvb_usb]
[<ffffffffa13517dc>] dib0700_probe+0x14c/0x410 [dvb_usb_dib0700]
[<ffffffff81dbb1dd>] usb_probe_interface+0x45d/0x940
[<ffffffff81ce7e7a>] driver_probe_device+0x21a/0xc30
[<ffffffff81ce89b1>] __driver_attach+0x121/0x160
[<ffffffff81ce21bf>] bus_for_each_dev+0x11f/0x1a0
[<ffffffff81ce6cdd>] driver_attach+0x3d/0x50
[<ffffffff81ce5df9>] bus_add_driver+0x4c9/0x770
[<ffffffff81cea39c>] driver_register+0x18c/0x3b0
[<ffffffff81db6e98>] usb_register_driver+0x1f8/0x440
[<ffffffffa074001e>] dib0700_driver_init+0x1e/0x1000 [dvb_usb_dib0700]
[<ffffffff810021b1>] do_one_initcall+0x141/0x300
[<ffffffff8144d8eb>] do_init_module+0x1d0/0x5ad
[<ffffffff812f27b6>] load_module+0x6666/0x9ba0
[<ffffffff812f5fe8>] SyS_finit_module+0x108/0x130
[<ffffffff822e8636>] entry_SYSCALL_64_fastpath+0x16/0x76
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&dev->lock);
lock(s_active#171);
lock(&dev->lock);
lock(s_active#171);
*** DEADLOCK ***
3 locks held by systemd-udevd/2681:
#0: (&dev->mutex){......}, at: [<ffffffff81ce8933>] __driver_attach+0xa3/0x160
#1: (&dev->mutex){......}, at: [<ffffffff81ce8941>] __driver_attach+0xb1/0x160
#2: (&dev->lock){+.+.+.}, at: [<ffffffffa0724def>] rc_register_device+0xb2f/0x1450 [rc_core]
In this specific case, some error happened during device init,
causing IR to be disabled.
Let's fix it by adding a var that will tell when the device is
initialized. Any calls before that will return a -EINVAL.
That should prevent the race issues.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Instead of copying exactly the same code on all USB devices,
add an ancillary routine that will create and fill the
struct media_device with the values imported from the USB
device.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Don't let it be included twice, to avoid compiler issues.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
DMA allocations might be subject to certain requirements specific to the
hardware using the buffers, such as availability of kernel mapping (for
contents fix-ups in the driver). The only entity that knows them is the
driver, so it must share this knowledge with vb2-dc.
This patch extends the alloc_ctx initialization interface to let the
driver specify DMA attrs, which are then stored inside the allocation
context and will be used for all allocations with that context.
As a side effect, all dma_*_coherent() calls are turned into
dma_*_attrs() calls, because the attributes need to be carried over
through all DMA operations.
Signed-off-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Add a header file for the tvp5150 input connectors constants that
can be shared between the driver and Device Tree source files.
[mchehab@osg.samsung.com: rename tvp5150.h also at em28xx-cards.c]
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Some tvp5150 variants, have an internal generator that can generate a
black screen output. Since this is a HW block, it should be in the HW
inputs list.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
V4L2 sub-devices that are registered asynchronously have no way to know
when they have been registration with a V4L2 device but they might need
to take some action after this.
So let's add a callback that can be executed by the V4L2 async core to
allow sub-devices drivers to do any needed initialization that depends
on the registration.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
v4l2_ctrl_add_ctrl() interface has no users since its introduction in
commit 0996517cf8 ("V4L/DVB: v4l2: Add new control handling framework")
and its functionality is covered by v4l2_ctrl_new() and derivative
interfaces, so it is safe to remove the interface from the kernel.
Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Instead of copyping the same code on all PCI devices that
would have a media controller, add a core ancillary routine.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Allow devices to pass an optional argument to register the DVB
driver at the media controller.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The em28xx_v4l2_create_media_graph() is almost generic enough to
be at the core, as an ancillary function. Make it even more generic,
by getting rid of em28xx-specific code, relying only at the
media_device, in order to discover all entities found on PC-customer's
hardware and add it at the V4L2 core.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Merge tag 'v4.5-rc3' into patchwork
Linux 4.5-rc3
* tag 'v4.5-rc3': (644 commits)
Linux 4.5-rc3
epoll: restrict EPOLLEXCLUSIVE to POLLIN and POLLOUT
radix-tree: fix oops after radix_tree_iter_retry
MAINTAINERS: trim the file triggers for ABI/API
dax: dirty inode only if required
thp: make deferred_split_scan() work again
mm: replace vma_lock_anon_vma with anon_vma_lock_read/write
ocfs2/dlm: clear refmap bit of recovery lock while doing local recovery cleanup
um: asm/page.h: remove the pte_high member from struct pte_t
mm, hugetlb: don't require CMA for runtime gigantic pages
mm/hugetlb: fix gigantic page initialization/allocation
mm: downgrade VM_BUG in isolate_lru_page() to warning
mempolicy: do not try to queue pages from !vma_migratable()
mm, vmstat: fix wrong WQ sleep when memory reclaim doesn't make any progress
vmstat: make vmstat_update deferrable
mm, vmstat: make quiet_vmstat lighter
mm/Kconfig: correct description of DEFERRED_STRUCT_PAGE_INIT
memblock: don't mark memblock_phys_mem_size() as __init
dump_stack: avoid potential deadlocks
mm: validate_mm browse_rb SMP race condition
...
The vb2_thread implementation was made generic and was moved from
videobuf2-v4l2.c to videobuf2-core.c in commit af3bac1a. Unfortunately
that clearly was never tested since it broke read() causing NULL address
references.
The root cause was confused handling of vb2_buffer vs v4l2_buffer (the pb
pointer in various core functions).
The v4l2_buffer no longer exists after moving the code into the core and
it is no longer needed. However, the vb2_thread code passed a pointer to
a vb2_buffer to the core functions were a v4l2_buffer pointer was expected
and vb2_thread expected that the vb2_buffer fields would be filled in
correctly.
This is obviously wrong since v4l2_buffer != vb2_buffer. Note that the
pb pointer is a void pointer, so no type-checking took place.
This patch fixes this problem:
1) allow pb to be NULL for vb2_core_(d)qbuf. The vb2_thread code will use
a NULL pointer here since they don't care about v4l2_buffer anyway.
2) let vb2_core_dqbuf pass back the index of the received buffer. This is
all vb2_thread needs: this index is the index into the q->bufs array
and vb2_thread just gets the vb2_buffer from there.
3) the fileio->b pointer (that originally contained a v4l2_buffer) is
removed altogether since it is no longer needed.
Tested with vivid and the cobalt driver.
Cc: stable@vger.kernel.org # Kernel >= 4.3
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Matthias Schwarzott <zzam@gentoo.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
We also need to standardize the PAD index macros for demods,
as they all should look the same in a media graph.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The audio and video IF-PLL decoders have one sink and one source
PAD. Add macro names for those pads and describe what kind of
signals are represented at such pads.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Analog TV tuners have a separate output pad for the audio
IF or audio sampled data. This pad is connected to a different
chipset.
Add an extra pad for it and improve the documentation.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The customer PC hardware can be shipped with lots of different
configurations, as vendors use to replace some of the chips on
their hardware along the time. All drivers that support such
devices are prepared to handle the hardware differences, using
their own auto-probing logic.
They do it in a way that number of inputs and outputs for a given
hardware type doesn't change.
Now that we're adding media controller capabilities to those drivers,
we need to standardize the number of inputs and outputs for each
hardware type, as we want to have a generic function at the V4L2
core that would create the links for the entities that are expected
on such hardware.
Such standard is already there for tuners, but tuner.h is not the
best place to store such data, as we'll need to add definitions also
for analog TV demodulators.
Also, we'll need a place to put a set of MC handling functions. So,
let's create a v4l2-mc.h to store such kind of definitions.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The output of a tuner is not only IF frequencies. They may also
output audio on some of its pins, and may even be a zero-IF tuner,
with outputs a baseband. So, rename the PAD name to make it
clearer and add a proper documentation about that at tuner.h.
No functional changes.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Sometimes, it is desired to create 1:n and n:1 or even
n:n links between different entities with the same
function.
This is actually needed to support DVB devices that
have multiple frontends. While we could do a function
like that internally at the DVB core, such function is
generic enough to be at media-entity, and it could be
useful on some other places.
So, add such function.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
There are two ancillary functions that are missing comments.
While those are used only internally at media-entity.c,
document them, for completeness.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Instead of using one u32 counter per type for object IDs, use
just one counter. With such change, it makes sense to simplify
the debug logs too.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Several parameters added by the media_ent_enum patches
were declared with wrong argument names:
include/media/media-device.h:333: warning: No description found for parameter 'entity_internal_idx_max'
include/media/media-device.h:354: warning: No description found for parameter 'ent_enum'
include/media/media-device.h:354: warning: Excess function parameter 'e' description in 'media_entity_enum_init'
include/media/media-device.h:333: warning: No description found for parameter 'entity_internal_idx_max'
include/media/media-device.h:354: warning: No description found for parameter 'ent_enum'
include/media/media-device.h:354: warning: Excess function parameter 'e' description in 'media_entity_enum_init'
include/media/media-entity.h:397: warning: No description found for parameter 'ent_enum'
include/media/media-entity.h:397: warning: Excess function parameter 'e' description in 'media_entity_enum_zero'
include/media/media-entity.h:409: warning: No description found for parameter 'ent_enum'
include/media/media-entity.h:409: warning: Excess function parameter 'e' description in 'media_entity_enum_set'
include/media/media-entity.h:424: warning: No description found for parameter 'ent_enum'
include/media/media-entity.h:424: warning: Excess function parameter 'e' description in 'media_entity_enum_clear'
include/media/media-entity.h:441: warning: No description found for parameter 'ent_enum'
include/media/media-entity.h:441: warning: Excess function parameter 'e' description in 'media_entity_enum_test'
include/media/media-entity.h:458: warning: No description found for parameter 'ent_enum'
include/media/media-entity.h:458: warning: Excess function parameter 'e' description in 'media_entity_enum_test_and_set'
include/media/media-entity.h:474: warning: No description found for parameter 'ent_enum'
include/media/media-entity.h:474: warning: Excess function parameter 'e' description in 'media_entity_enum_empty'
include/media/media-entity.h:474: warning: Excess function parameter 'entity' description in 'media_entity_enum_empty'
include/media/media-entity.h:489: warning: No description found for parameter 'ent_enum1'
include/media/media-entity.h:489: warning: No description found for parameter 'ent_enum2'
include/media/media-entity.h:489: warning: Excess function parameter 'e' description in 'media_entity_enum_intersects'
include/media/media-entity.h:489: warning: Excess function parameter 'f' description in 'media_entity_enum_intersects'
Fix them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Some exported functions were still documented at the .c file,
instead of documenting at the .h one.
Move the documentation to the right place, as we only use headers
at media device-drivers.xml DocBook.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This isn't really a part of any interface drivers are expected to use. In
order to keep drivers from using it, hide it in media-entity.c. This was
always an arbitrary number and should be removed in the long run.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The bitmaps for entity enumerations used to be statically allocated. Now
that the drivers have been converted to use the new interface which
explicitly initialises the enum objects, drop the pre-allocated bitmaps.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Initialise a given graph walk object once, and then keep using it whilst
the same pipeline is running. Once the pipeline is stopped, release the
graph walk object.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This will also mean that the necessary graph related data structures will
be allocated dynamically, removing the need for maximum ID checks.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add media_entity_graph_walk_init() and media_entity_graph_walk_cleanup()
functions in order to dynamically allocate memory for the graph. This is
not done in media_entity_graph_walk_start() as there are situations where
e.g. correct error handling, that itself may not fail, requires successful
graph walk.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The struct media_entity_graph was allocated in the stack, limiting the
number of entities that could be reasonably allocated. Instead, move the
struct to struct media_pipeline which is typically allocated using
kmalloc() instead.
The intent is to keep the enumeration around for later use for the
duration of the streaming. As streaming is eventually stopped, an
unfortunate memory allocation failure would prevent stopping the
streaming. As no memory will need to be allocated, the problem is avoided
altogether.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
KernelDoc doesn't appear to handle anonymous structs defined inside
another gracefully. As the struct is internal to the framework graph walk
algorithm, detailed documentation isn't seen very important.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
It will be needed in struct media_pipeline shortly.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This is useful in e.g. knowing whether certain operations have already
been performed for an entity. The users include the framework itself (for
graph walking) and a number of drivers.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The internal index can be used internally by the framework in order to keep
track of entities for a purpose or another. The internal index is constant
while it's registered to a media device, but the same index may be re-used
once the entity having that index is unregistered.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The media device node is registered and so made visible to user-space
before entities are registered and links created which means that the
media graph obtained by user-space could be only partially enumerated
if that happens too early before all the graph has been created.
To avoid this race condition, split the media init and registration
in separate functions and only register the media device node when
all the pending subdevices have been registered, either explicitly
by the driver or asynchronously using v4l2_async_register_subdev().
The media_device_register() had a check for drivers not filling dev
and model fields but all drivers in mainline set them and not doing
it will be a driver bug so change the function return to void and
add a BUG_ON() for dev being NULL instead.
Also, add a media_device_cleanup() function that will destroy the
graph_mutex that is initialized in media_device_init().
[mchehab@osg.samsung.com: Fix compilation if !CONFIG_MEDIA_CONTROLLER
and remove two warnings added by this changeset]
Suggested-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
There is one struct and two functions that were not documented.
Add the corresponding kernel-doc documentation for them.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
As we're using the headers file only for documentation, move the
two kernel-doc macros to the header, and fix it to avoid
warnings.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Improve the documentation to let it clear that the entity function
must be initialized.
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Several additional functions are described at media-entity.c.
Moving them to the header file, to make the code cleaner and
to have all such macros at the same place.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Those media_obj_* functions are actually creating/destroying
media graph objects. So, rename them to better represent
what they're actually doing.
No functional changes.
This was created via this small shell script:
for i in $(git grep -l media_gobj_init); do sed s,media_gobj_init,media_gobj_create,g <$i >a && mv a $i; done
for i in $(git grep -l media_gobj_remove); do sed s,media_gobj_remove,media_gobj_destroy,g <$i >a && mv a $i; done
Suggested-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Now that we moved the content of the media-framework.txt into
the kerneldoc documentation, move the per-function specific
documentation to the corresponding functions and clean it up.
It would be good if we had already the markdown kernel-doc
patches merged upstream, but, while we doesn't have it,
let's make it less ugly at device-drivers.xml.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This function was used in the past to free the links
that were allocated by the media controller core.
However, this is not needed anymore. We should likely
get rid of the funcion on some function, but, for now,
let's just convert into an inlined function and let the
compiler to get rid of it.
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Instead of using a text file, let's put it together with the
struct documentation for the Media Controller.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Both revision and group_id fields were never used and were always
initialized to zero. Remove them.
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
With the MC next gen rework, what's left for media_entity_init()
is to just initialize the PADs. However, certain devices, like
a FLASH led/light doesn't have any input or output PAD.
So, there's no reason why calling media_entity_init() would be
mandatory. Also, despite its name, what this function actually
does is to initialize the PADs data. So, rename it to
media_entity_pads_init() in order to reflect that.
The media entity actual init happens during entity register,
at media_device_register_entity(). We should move init of
num_links and num_backlinks to it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
We should not be creating device nodes at IRQ contexts. So,
the only flags we'll be using will be GFP_KERNEL. Let's
remove the gfp_flags, in order to make the interface simpler.
If we ever need it, it would be easy to revert those changes.
While here, remove an extra blank line.
Suggested-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Entities should have one or more functions. Calling it as a
type proofed to not be correct, as an entity could eventually
have more than one type.
So, rename the field as function.
Please notice that this patch doesn't extend support for
multiple function entities. Such change will happen when
we have real case drivers using it.
No functional changes.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Drivers should check if interfaces and interface links were
created. Add a must_check for them.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Due to the graph traversal algorithm currently in usage, we
need a copy of all data links. Those backlinks should not be
send to userspace, as otherwise, all links there will be
duplicated.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Only a few structs are documented on kernel-doc-nano format
(the ones added by the MC next gen patches).
Add a documentation for all structs, and ensure that they'll
be producing the documentation at the Kernel's device driver
DocBook.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
V4L2 device (and subdevice) nodes should create an interface, if the
Media Controller support is enabled.
Please notice that radio devices should not create an entity, as radio
input/output is either via wires or via ALSA.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Tuners actually have at least one connector on its input.
Add a PAD to connect it.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Some parts of the media controller are using mutexes while
others are using spin locks in order to protect creation
and removal of elements in the graph. That's wrong!
Also, the V4L2 core can remove graph elements on non-interactive
context:
BUG: sleeping function called from invalid context at include/linux/sched.h:2776
Fix it by always using spin locks for graph element addition/removal,
just like entity creation/removal is protected at media-device.c
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Just like what's done with entities, when the media controller is
unregistered, release any interface and interface links that
might still be there.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add functions to explicitly unregister all entity links.
This function is called automatically when an entity
link is destroyed.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Every time a graph object is added or removed, the version
of the topology changes. That's a requirement for the new
MEDIA_IOC_G_TOPOLOGY, in order to allow userspace to know
that the topology has changed after a previous call to it.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The MC next gen API sends objects to userspace grouped by
their types.
In the case of pads and links, in order to improve performance
and have a simpler code, the best is to store them also on
separate linked lists at MC.
If we don't do that, we would need this kind of interaction
to send data to userspace (code is in structured english):
for each entity:
for each pad:
store pads
for each entity:
for each link:
store link
for each interface:
for each link:
store link
With would require one nested loop for pads and two nested
loops for links. By using separate linked lists for them,
just one loop would be enough.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Let's control the topology changes inside the graph_object. So, move the
addition and removal of interfaces/entities from the mdev lists to
media_gobj_init() and media_gobj_remove().
The main reason is that mdev should have lists for all object types, as
the new MC api will require to store objects in separate places.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Just like we do with entities, use a similar macro for the
interfaces loop.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add a new ioctl that will report the entire topology on
one go.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
As we'll be removing entity subtypes from the Kernel, we need
to provide a way for drivers and core to check if a given
entity is represented by a V4L2 subdev or if it is an V4L2
I/O entity (typically with DMA).
Drivers that create entities that don't belong to any defined subdev
category should use MEDIA_ENT_T_V4L2_SUBDEV_UNKNOWN.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The media device should list the interface objects, so add a linked list
for those interfaces in struct media_device.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Now that we have a new graph object called "interfaces", we
need to be able to link them to the entities.
Add a linked list to the interfaces to allow them to be
linked to the entities.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
By adding an union at media_link, we get for free a way to
represent interface->entity links.
No need to change anything at the code, just at the internal
header file.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The entire logic that represent graph links were developed on a
time where there were no needs to dynamic remove links. So,
although links are created/removed one by one via some
functions, they're stored as an array inside the entity struct.
As the array may grow, there's a logic inside the code that
checks if the amount of space is not enough to store
the needed links. If it isn't the core uses krealloc()
to change the size of the link, with is bad, as it
leaves the memory fragmented.
So, convert links into a list.
Also, currently, both source and sink entities need the link
at the graph traversal logic inside media_entity. So there's
a logic duplicating all links. That makes it to spend
twice the memory needed. This is not a big deal for today's
usage, where the number of links are not big.
Yet, if during the MC workshop discussions, it was said that
IIO graphs could have up to 4,000 entities. So, we may
want to remove the duplication on some future. The problem
is that it would require a separate linked list to store
the backlinks inside the entity, or to use a more complex
algorithm to do graph backlink traversal, with is something
that the current graph traversal inside the core can't cope
with. So, let's postpone a such change if/when it is actually
needed.
It should also be noticed that the media_link structure uses
44 bytes on 32-bit architectures and 84 bytes on 64-bit
architecture. It will thus be allocated out of the 64-bytes and
96-bytes pools respectively. That's a 12.5% memory waste on
64-bit architectures and 31.25% on 32-bit architecture.
A linked list is less efficient than an array in this case, but
this could later be optimized if we can get rid of the reverse
links (with would reduce memory allocation by 50%).
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Interfaces are different than entities: they represent a
Kernel<->userspace interaction, while entities represent a
piece of hardware/firmware/software that executes a function.
Let's distinguish them by creating a separate structure to
store the interfaces.
Later patches should change the existing drivers and logic
to split the current interface embedded inside the entity
structure (device nodes) into a separate object of the graph.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Now that the struct media_entity .parent field is unused, it can be
safely removed. Since all the previous users were converted to use
the .mdev field from the embedded struct media_gobj instead.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
With the new API, a link can be either between two PADs or between an interface
and an entity. So, we need to use a better name for the function that create
links between two pads.
So, rename the such function to media_create_pad_link().
No functional changes.
This patch was created via this shell script:
for i in $(find drivers/media -name '*.[ch]' -type f) $(find drivers/staging/media -name '*.[ch]' -type f) $(find include/ -name '*.h' -type f) ; do sed s,media_entity_create_link,media_create_pad_link,g <$i >a && mv a $i; done
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
It helps to check if the media controller is doing the
right thing with the object creation and removal.
No extra code/data will be produced if DEBUG or
CONFIG_DYNAMIC_DEBUG is not enabled.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Just like entities and pads, links also need to have unique
Object IDs along a given media controller.
So, let's add a media_gobj inside it and initialize
the object then a new link is created.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
PADs also need unique object IDs that won't conflict with
the entity object IDs.
The pad objects are currently created via media_entity_init()
and, once created, never change.
While this will likely change in the future in order to
support dynamic changes, for now we'll keep PADs as arrays
and initialize the media_gobj embedded structs when
registering the entity.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
As entities are graph objects, let's embed media_gobj
on it. That ensures an unique ID for entities that can be
global along the entire media controller.
For now, we'll keep the already existing entity ID. Such
field need to be dropped at some point, but for now, let's
not do this, to avoid needing to review all drivers and
the userspace apps.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Due to the MC API proposed changes, we'll need to have an unique
object ID for all graph objects, and have some shared fields
that will be common on all media graph objects.
Right now, the only common object is the object ID, but other
fields will be added later on.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Instead of accessing directly entity.id, let's create a macro,
as this field will be moved into a common struct later on.
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Currently, media_entity_init() creates an array with the links,
allocated at init time. It provides a parameter (extra_links)
that would allocate more links than the current needs, but this
is not used by any driver.
As we want to be able to do dynamic link allocation/removal,
we'll need to change the implementation of the links. So,
before doing that, let's first remove that extra unused
parameter, in order to cleanup the interface first.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Change to define Media Controller API when CONFIG_MEDIA_CONTROLLER
is enabled. Define stubs for CONFIG_MEDIA_CONTROLLER disabled case.
This will help avoid drivers needing to enclose Media Controller
code within ifdef CONFIG_MEDIA_CONTROLLER block.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add new media controller API to allocate media device as a
device resource. When a media device is created on the main
struct device which is the parent device for the interface
device, it will be available to all drivers associated with
that interface. For example, if a usb media device driver
creates the media device on the main struct device which is
common for all the drivers that control the media device,
including the non-media ALSA driver, media controller API
can be used to share access to the resources on the media
device. This new interface provides the above described
feature. A second interface that finds and returns the media
device is added to allow drivers to find the media device
created by any of the drivers associated with the device.
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The handling of q->plane_sizes was wrong in vb2_core_create_bufs().
The q->plane_sizes array was global and it was overwritten by create_bufs.
So if reqbufs was called with e.g. size 100000 then q->plane_sizes[0] would
be set to 100000. If create_bufs was called afterwards with size 200000,
then q->plane_sizes[0] would be overwritten with the new value. Calling
create_bufs again for size 100000 would cause an error since 100000 is now
less than q->plane_sizes[0].
This patch fixes this problem by 1) removing q->plane_sizes and using the
vb->planes[].length field instead, and 2) by introducing a min_length field
in struct vb2_plane. This field is set to the plane size as returned by
the queue_setup op and is the minimum required plane size. So user pointers
or dmabufs should all be at least this size.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reported-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This ops can never fail, so make these void functions.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Move things related with vb2 file I/O and vb2_thread without doing any
functional changes. After that, videobuf2-internal.h is removed because
it is not necessary any more.
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add copy_timestamp to struct vb2_queue as a flag set if vb2-core should
copy timestamps.
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Move timestamp from struct vb2_v4l2_buffer to struct vb2_buffer
for common use, and change its type to u64 in order to handling
y2038 problem. This patch also includes all device drivers' changes related to
this restructuring.
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The queue_setup callback has a void pointer that is just for V4L2
and is the pointer to the v4l2_format struct that was passed to
VIDIOC_CREATE_BUFS. The idea was that drivers would use the information
from that struct to buffers suitable for the requested format.
After the vb2 split series this pointer is now a void pointer,
which is ugly, and the reality is that all existing drivers will
effectively just look at the sizeimage field of v4l2_format.
To make this more generic the queue_setup callback is changed:
the void pointer is dropped, instead if the *num_planes argument
is 0, then use the current format size, if it is non-zero, then
it contains the number of requested planes and the sizes array
contains the requested sizes. If either is unsupported, then return
-EINVAL, otherwise use the requested size(s).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The snd_tea575x_ops structures are never modified, so declare them as
const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add the new match_reduced_fps argument to v4l2_match_dv_timings().
Depending on the situation you may or may not desire to match the
reduced_fps flag. Typically only HDMI transmitters will need to
check for this flag.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The RC_BIT_ constants are used in 64-bit bitmaps.
In case of > 32 RC_BIT_ constants the current code will fail
on 32-bit systems.
Therefore define the RC_BIT_ constants as unsigned long long.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
A default timeout value of 125 ms should work for all decoders.
Declare a constant to help standardize its' use.
Signed-off-by: Eric Nelson <eric@nelint.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Make all v4l2-clk's clock name use V4L2_CLK_NAME_SIZE definition.
In future, if the string is increased we just need to change the
V4L2_CLK_NAME_SIZE once.
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This macro is used to generate an OF string for a v4l2 clock.
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Added a helper function to check necessary conditions required for
reduced fps. The reduced fps is supported for CVT and CEA861 timings.
CVT supports reduced fps only if reduced blanking v2 (indicated by
vsync = 8) is true. Whereas CEA861 supports reduced fps if
V4L2_DV_FL_CAN_REDUCE_FPS flag is true.
Signed-off-by: Prashant Laddha <prladdha@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Let's not mix platform_data headers with the core headers. Instead, let's
create a subdir at linux/platform_data and move the headers to that
common place, adding it to MAINTAINERS.
The headers were moved with:
mkdir include/linux/platform_data/media/; git mv include/media/gpio-ir-recv.h include/media/ir-rx51.h include/media/mmp-camera.h include/media/omap1_camera.h include/media/omap4iss.h include/media/s5p_hdmi.h include/media/si4713.h include/media/sii9234.h include/media/smiapp.h include/media/soc_camera.h include/media/soc_camera_platform.h include/media/timb_radio.h include/media/timb_video.h include/linux/platform_data/media/
And the references fixed with this script:
MAIN_DIR="linux/platform_data/"
PREV_DIR="media/"
DIRS="media/"
echo "Checking affected files" >&2
for i in $DIRS; do
for j in $(find include/$MAIN_DIR/$i -type f -name '*.h'); do
n=`basename $j`
git grep -l $n
done
done|sort|uniq >files && (
echo "Handling files..." >&2;
echo "for i in \$(cat files|grep -v Documentation); do cat \$i | \\";
(
cd include/$MAIN_DIR;
for j in $DIRS; do
for i in $(ls $j); do
echo "perl -ne 's,(include [\\\"\\<])$PREV_DIR($i)([\\\"\\>]),\1$MAIN_DIR$j\2\3,; print \$_' |\\";
done;
done;
echo "cat > a && mv a \$i; done";
);
echo "Handling documentation..." >&2;
echo "for i in MAINTAINERS \$(cat files); do cat \$i | \\";
(
cd include/$MAIN_DIR;
for j in $DIRS; do
for i in $(ls $j); do
echo " perl -ne 's,include/$PREV_DIR($i)\b,include/$MAIN_DIR$j\1,; print \$_' |\\";
done;
done;
echo "cat > a && mv a \$i; done"
);
) >script && . ./script
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Let's not mix headers used by the core with those headers that
are needed by some driver-specific interface header.
The headers used on drivers were manually moved using:
mkdir include/media/drv-intf/
git mv include/media/cx2341x.h include/media/cx25840.h \
include/media/exynos-fimc.h include/media/msp3400.h \
include/media/s3c_camif.h include/media/saa7146.h \
include/media/saa7146_vv.h include/media/sh_mobile_ceu.h \
include/media/sh_mobile_csi2.h include/media/sh_vou.h \
include/media/si476x.h include/media/soc_mediabus.h \
include/media/tea575x.h include/media/drv-intf/
And the references for those headers were corrected using:
MAIN_DIR="media/"
PREV_DIR="media/"
DIRS="drv-intf/"
echo "Checking affected files" >&2
for i in $DIRS; do
for j in $(find include/$MAIN_DIR/$i -type f -name '*.h'); do
n=`basename $j`
git grep -l $n
done
done|sort|uniq >files && (
echo "Handling files..." >&2;
echo "for i in \$(cat files|grep -v Documentation); do cat \$i | \\";
(
cd include/$MAIN_DIR;
for j in $DIRS; do
for i in $(ls $j); do
echo "perl -ne 's,(include [\\\"\\<])$PREV_DIR($i)([\\\"\\>]),\1$MAIN_DIR$j\2\3,; print \$_' |\\";
done;
done;
echo "cat > a && mv a \$i; done";
);
echo "Handling documentation..." >&2;
echo "for i in MAINTAINERS \$(cat files); do cat \$i | \\";
(
cd include/$MAIN_DIR;
for j in $DIRS; do
for i in $(ls $j); do
echo " perl -ne 's,include/$PREV_DIR($i)\b,include/$MAIN_DIR$j\1,; print \$_' |\\";
done;
done;
echo "cat > a && mv a \$i; done"
);
) >script && . ./script
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Currently, include/media is messy, as it contains both the V4L2 core
headers and some driver-specific headers on the same place. That makes
harder to identify what core headers should be documented and what
headers belong to I2C drivers that are included only by bridge/main
drivers that would require the functions provided by them.
Let's move those i2c specific files to its own subdirectory.
The files to move were produced via the following script:
mkdir include/media/i2c
(cd include/media; for i in *.h; do n=`echo $i|sed s/.h$/.c/`; if [ -e ../../drivers/media/i2c/$n ]; then echo $i; git mv $i i2c/; fi; done)
(cd include/media; for i in *.h; do n=`echo $i|sed s/.h$/.c/`; if [ -e ../../drivers/media/*/i2c/$n ]; then echo $i; git mv $i i2c/; fi; done)
for i in include/media/*.h; do n=`basename $i`; (for j in $(git grep -l $n); do dirname $j; done)|sort|uniq|grep -ve '^.$' > list; num=$(wc -l list|cut -d' ' -f1); if [ $num == 1 ]; then if [ "`grep i2c list`" != "" ]; then git mv $i include/media/i2c; fi; fi; done
And the references corrected via this script:
MAIN_DIR="media/"
PREV_DIR="media/"
DIRS="i2c/"
echo "Checking affected files" >&2
for i in $DIRS; do
for j in $(find include/$MAIN_DIR/$i -type f -name '*.h'); do
n=`basename $j`
git grep -l $n
done
done|sort|uniq >files && (
echo "Handling files..." >&2;
echo "for i in \$(cat files|grep -v Documentation); do cat \$i | \\";
(
cd include/$MAIN_DIR;
for j in $DIRS; do
for i in $(ls $j); do
echo "perl -ne 's,(include [\\\"\\<])$PREV_DIR($i)([\\\"\\>]),\1$MAIN_DIR$j\2\3,; print \$_' |\\";
done;
done;
echo "cat > a && mv a \$i; done";
);
echo "Handling documentation..." >&2;
echo "for i in MAINTAINERS \$(cat files); do cat \$i | \\";
(
cd include/$MAIN_DIR;
for j in $DIRS; do
for i in $(ls $j); do
echo " perl -ne 's,include/$PREV_DIR($i)\b,include/$MAIN_DIR$j\1,; print \$_' |\\";
done;
done;
echo "cat > a && mv a \$i; done"
);
) >script && . ./script
Merged Sakari Ailus patch that moves smiapp.h to include/media/i2c.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
The file include/media/lirc.h describes a public interface and
should thus be a public header. See kernel bug
https://bugzilla.kernel.org/show_bug.cgi?id=75751 which has
a manpage describing the interface + an acknowledgment that this
info belongs to uapi.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Prepare to divide videobuf2
- Separate vb2 trace events from v4l2 trace event.
- Make wrapper functions that will move to v4l2-side.
- Make vb2_core_* functions that will remain in core-side.
- Add a callback function table for buffer operation which makes vb2-core
to be able to invoke a v4l2-side functions.
- Rename internal functions as vb2_*.
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Replace struct v4l2_format * with void * to make queue_setup()
for common use.
And then, modify all device drivers related with this change.
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
[hans.verkuil@cisco.com: fix missing const in fimc-lite.c]
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The struct lirc_driver is already documented, but on some
internal format. Convert it to Kernel doc-nano format and
add documentation for some additional parameters that are
also present at the structure.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This header declares the code and structures used to parse
Hauppauge eeproms. As this is part of the V4L2 common, and
used by several drivers, let's properly document it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The tuner-types.h is part of the V4L2 core and should be
touched for every new tuner added. So, it deserves to be
documented at the device-drivers DocBook.
Add it to device-drivers.tmpl and add descriptions for
enum param_type and struct tuner_range.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The struct tuner_params is almost fully documented, but
using a non-standard way. Convert it to doc-nano format,
and add descriptions for the parameters that aren't
documented yet.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Remove some bad whitespaces before tabs and fix the initial
comment to be compliant with Kernel coding style.
Now, the only complains are about long comment lines at the
defines. Those warnings should be ok to be kept.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This is part of the V4L2 core, so its kABI should be
documented at device-drivers DocBook.
Add the meta-tags for that.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Right now, "private:" tag should be lower-case, otherwise the
scripts/kernel-doc won't do the right thing.
Also, no fields after "private:" should be documented. As we don't
want to strip the documentation, let's untag. This way, it will
be seen only at the file, and not at the DocBooks.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Fix those sparse warnings:
drivers/media/media-entity.c:238:17: warning: Variable length array is used.
drivers/media/media-entity.c:239:17: warning: Variable length array is used.
That allows sparse and other code check tools to verify if the
function is using more stack than allowed.
It also solves a bad Kernel pratice of using var length arrays
at the stack.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
There's no need to document to_foo() macros, and the macro is
badly documented anyway. That removes this warning:
include/media/videobuf2-v4l2.h:43: warning: No description found for parameter 'vb'
While here, remove the parenthesis for container_of(). The
countainer_of() already have parenthesis inside it.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
include/media/videobuf2-core.h:112: warning: No description found for parameter 'get_dmabuf'
include/media/videobuf2-core.h:146: warning: No description found for parameter 'm'
include/media/videobuf2-core.h:146: warning: Excess struct/union/enum/typedef member 'mem_offset' description in 'vb2_plane'
There are still several warnings, but those are hard to fix,
as they're actually a bug at DocBook. Those should be fixed on
separate patches.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Remove v4l2 stuff - v4l2_buf, v4l2_plane - from struct vb2_buffer.
Add new member variables - bytesused, length, offset, userptr, fd,
data_offset - to struct vb2_plane in order to cover all information
of v4l2_plane.
struct vb2_plane {
<snip>
unsigned int bytesused;
unsigned int length;
union {
unsigned int offset;
unsigned long userptr;
int fd;
} m;
unsigned int data_offset;
}
Replace v4l2_buf with new member variables - index, type, memory - which
are common fields for buffer management.
struct vb2_buffer {
<snip>
unsigned int index;
unsigned int type;
unsigned int memory;
unsigned int num_planes;
struct vb2_plane planes[VIDEO_MAX_PLANES];
<snip>
};
v4l2 specific fields - flags, field, timestamp, timecode,
sequence - are moved to vb2_v4l2_buffer in videobuf2-v4l2.c
struct vb2_v4l2_buffer {
struct vb2_buffer vb2_buf;
__u32 flags;
__u32 field;
struct timeval timestamp;
struct v4l2_timecode timecode;
__u32 sequence;
};
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Make videobuf2-v4l2 as a wrapper of videobuf2-core for v4l2-use.
And replace videobuf2-core.h with videobuf2-v4l2.h.
This renaming change should be accompanied by the modifications
of all device drivers that include videobuf2-core.h.
It can be done with just running this shell script.
replace()
{
str1=$1
str2=$2
dir=$3
for file in $(find $dir -name *.h -o -name *.c -o -name Makefile)
do
echo $file
sed "s/$str1/$str2/g" $file > $file.out
mv $file.out $file
done
}
replace "videobuf2-core" "videobuf2-v4l2" "include/media/"
replace "videobuf2-core" "videobuf2-v4l2" "drivers/media/"
replace "videobuf2-core" "videobuf2-v4l2" "drivers/usb/gadget/"
replace "videobuf2-core" "videobuf2-v4l2" "drivers/staging/media/"
Signed-off-by: Junghak Sung <jh1009.sung@samsung.com>
Signed-off-by: Geunyoung Kim <nenggun.kim@samsung.com>
Acked-by: Seung-Woo Kim <sw0312.kim@samsung.com>
Acked-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Fix the following 'make htmldocs' warnings:
.//include/media/v4l2-dv-timings.h:147: warning: No description found for parameter 'frame_height'
.//include/media/v4l2-dv-timings.h:147: warning: No description found for parameter 'hfreq'
.//include/media/v4l2-dv-timings.h:147: warning: No description found for parameter 'vsync'
.//include/media/v4l2-dv-timings.h:147: warning: No description found for parameter 'active_width'
.//include/media/v4l2-dv-timings.h:147: warning: No description found for parameter 'polarities'
.//include/media/v4l2-dv-timings.h:147: warning: No description found for parameter 'interlaced'
.//include/media/v4l2-dv-timings.h:147: warning: No description found for parameter 'fmt'
.//include/media/v4l2-dv-timings.h:171: warning: No description found for parameter 'frame_height'
.//include/media/v4l2-dv-timings.h:171: warning: No description found for parameter 'hfreq'
.//include/media/v4l2-dv-timings.h:171: warning: No description found for parameter 'vsync'
.//include/media/v4l2-dv-timings.h:171: warning: No description found for parameter 'polarities'
.//include/media/v4l2-dv-timings.h:171: warning: No description found for parameter 'interlaced'
.//include/media/v4l2-dv-timings.h:171: warning: No description found for parameter 'aspect'
.//include/media/v4l2-dv-timings.h:171: warning: No description found for parameter 'fmt'
.//include/media/v4l2-dv-timings.h:184: warning: No description found for parameter 'hor_landscape'
.//include/media/v4l2-dv-timings.h:184: warning: No description found for parameter 'vert_portrait'
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
All in-tree users have migrated to DT, remove support for platform data.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
[josh.wu@atmel.com: squash the commit to remove the unused variable: dev]
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
In the function configure_geometry(), we will setup the ISI CFG2
according to the sensor output format.
It make no sense to just read back the CFG2 register and just set part
of it.
So just set up this register directly makes things simpler.
Currently only support YUV format from camera sensor.
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Merge tag 'media/v4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
"A series of patches that move part of the code used to allocate memory
from the media subsystem to the mm subsystem"
[ The mm parts have been acked by VM people, and the series was
apparently in -mm for a while - Linus ]
* tag 'media/v4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] drm/exynos: Convert g2d_userptr_get_dma_addr() to use get_vaddr_frames()
[media] media: vb2: Remove unused functions
[media] media: vb2: Convert vb2_dc_get_userptr() to use frame vector
[media] media: vb2: Convert vb2_vmalloc_get_userptr() to use frame vector
[media] media: vb2: Convert vb2_dma_sg_get_userptr() to use frame vector
[media] vb2: Provide helpers for mapping virtual addresses
[media] media: omap_vout: Convert omap_vout_uservirt_to_phys() to use get_vaddr_pfns()
[media] mm: Provide new get_vaddr_frames() helper
[media] vb2: Push mmap_sem down to memops
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Merge tag 'media/v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- new DVB frontend drivers: ascot2e, cxd2841er, horus3a, lnbh25
- new HDMI capture driver: tc358743
- new driver for NetUP DVB new boards (netup_unidvb)
- IR support for DVBSky cards (smipcie-ir)
- Coda driver has gain macroblock tiling support
- Renesas R-Car gains JPEG codec driver
- new DVB platform driver for STi boards: c8sectpfe
- added documentation for the media core kABI to device-drivers DocBook
- lots of driver fixups, cleanups and improvements
* tag 'media/v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (297 commits)
[media] c8sectpfe: Remove select on undefined LIBELF_32
[media] i2c: fix platform_no_drv_owner.cocci warnings
[media] cx231xx: Use wake_up_interruptible() instead of wake_up_interruptible_nr()
[media] tc358743: only queue subdev notifications if devnode is set
[media] tc358743: add missing Kconfig dependency/select
[media] c8sectpfe: Use %pad to print 'dma_addr_t'
[media] DocBook media: Fix typo "the the" in xml files
[media] tc358743: make reset gpio optional
[media] tc358743: set direction of reset gpio using devm_gpiod_get
[media] dvbdev: document most of the functions/data structs
[media] dvb_frontend.h: document the struct dvb_frontend
[media] dvb-frontend.h: document struct dtv_frontend_properties
[media] dvb-frontend.h: document struct dvb_frontend_ops
[media] dvb: Use DVBFE_ALGO_HW where applicable
[media] dvb_frontend.h: document struct analog_demod_ops
[media] dvb_frontend.h: Document struct dvb_tuner_ops
[media] Docbook: Document struct analog_parameters
[media] dvb_frontend.h: get rid of dvbfe_modcod
[media] add documentation for struct dvb_tuner_info
[media] dvb_frontend: document dvb_frontend_tune_settings
...
Fix the format of the comments and add to DocBook.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
The comment metadata was wrong:
Warning(.//include/media/videobuf2-memops.h:25): cannot understand function prototype: 'struct vb2_vmarea_handler '
Warning(.//include/media/videobuf2-memops.h): no structured comments found
Fix and add to DocBook.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Most of the stuff at videobuf2-core are ok for adding it to
DocBook.
Two notes here:
1) As videobuf2-core will be soon be changed, better to
not spend too much efforts right now, as things will
change soon;
2) struct vb2_queue has a number of private elements that are
documented. As Kernel nano documentation format handles
"private:" arguments, we need to put them on a separate
comment block or to remove. Keeping the comments is
obviously better ;)
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
There are already markups for documentation at v4l-dv-timings.h,
however, they're not properly formatted.
Convert them to the right format and add this file to
the device-drivers DocBook.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
The comments there are good enough for DocBook, however they're
using a wrong format. Fix and add to device-drivers.xml.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Warning(.//include/media/v4l2-ctrls.h:217): No description found for parameter 'p_new'
Warning(.//include/media/v4l2-ctrls.h:217): No description found for parameter 'p_cur'
Warning(.//include/media/v4l2-ctrls.h:217): Excess struct/union/enum/typedef member 'val64' description in 'v4l2_ctrl'
Warning(.//include/media/v4l2-ctrls.h:314): No description found for parameter 'qmenu_int'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
This is an obsolete function that has several missing
arguments:
Warning(.//include/media/v4l2-ctrls.h:340): No description found for parameter 'id'
Warning(.//include/media/v4l2-ctrls.h:340): No description found for parameter 'name'
Warning(.//include/media/v4l2-ctrls.h:340): No description found for parameter 'type'
Warning(.//include/media/v4l2-ctrls.h:340): No description found for parameter 'min'
Warning(.//include/media/v4l2-ctrls.h:340): No description found for parameter 'max'
Warning(.//include/media/v4l2-ctrls.h:340): No description found for parameter 'step'
Warning(.//include/media/v4l2-ctrls.h:340): No description found for parameter 'def'
Warning(.//include/media/v4l2-ctrls.h:340): No description found for parameter 'flags'
However, this is an obsolete function that should be
removed soon. And are not meant to be used anymore. So,
instead of documenting those stuff, let's just make
DocBook to not handle it, by replacing "/**" by "/*".
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
The comments there are using a wrong format. Due to that,
DocBook were unable to parse it.
Fix the tags format, and add it to device-drivers.xml.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Warning(.//include/media/v4l2-subdev.h:203): No description found for parameter 'ioctl'
Warning(.//include/media/v4l2-subdev.h:203): No description found for parameter 'compat_ioctl32'
Warning(.//include/media/v4l2-subdev.h:203): No description found for parameter 'subscribe_event'
Warning(.//include/media/v4l2-subdev.h:203): No description found for parameter 'unsubscribe_event'
Warning(.//include/media/v4l2-subdev.h:273): No description found for parameter 's_stream'
Warning(.//include/media/v4l2-subdev.h:407): No description found for parameter 's_stream'
Warning(.//include/media/v4l2-subdev.h:623): No description found for parameter 'link_validate'
Warning(.//include/media/v4l2-subdev.h:623): No description found for parameter 'set_frame_desc'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Fixes the following warnings:
Warning(.//include/media/v4l2-subdev.h:445): No description found for parameter 'g_sliced_vbi_cap'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'enum_mbus_code'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'enum_frame_size'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'enum_frame_interval'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'get_fmt'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'set_fmt'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'get_selection'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'set_selection'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'get_edid'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'set_edid'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'dv_timings_cap'
Warning(.//include/media/v4l2-subdev.h:589): No description found for parameter 'enum_dv_timings'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 'g_std'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 's_std'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 'querystd'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 'cropcap'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 'g_crop'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 's_crop'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 'g_parm'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 's_parm'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 'g_frame_interval'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 's_frame_interval'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 's_dv_timings'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 'g_dv_timings'
Warning(.//include/media/v4l2-subdev.h:381): No description found for parameter 'query_dv_timings'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
The comments for struct v4l2_subdev_video_ops are out of the
order as the parameter would appear at struct. This is not
a problem for DocBook, but humans find harder to mentally
reorder ;)
So, put them at the right order. That makes easier to check
what's missing, and to put the comments in the right place.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Warning(.//include/media/v4l2-subdev.h:224): No description found for parameter 's_radio'
Warning(.//include/media/v4l2-subdev.h:224): No description found for parameter 's_frequency'
Warning(.//include/media/v4l2-subdev.h:224): No description found for parameter 'enum_freq_bands'
Warning(.//include/media/v4l2-subdev.h:224): No description found for parameter 'g_tuner'
Warning(.//include/media/v4l2-subdev.h:224): No description found for parameter 'g_modulator'
Warning(.//include/media/v4l2-subdev.h:224): No description found for parameter 's_modulator'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Warning(.//include/media/v4l2-subdev.h:183): No description found for parameter 'queryctrl'
Warning(.//include/media/v4l2-subdev.h:183): No description found for parameter 'g_ctrl'
Warning(.//include/media/v4l2-subdev.h:183): No description found for parameter 's_ctrl'
Warning(.//include/media/v4l2-subdev.h:183): No description found for parameter 'g_ext_ctrls'
Warning(.//include/media/v4l2-subdev.h:183): No description found for parameter 's_ext_ctrls'
Warning(.//include/media/v4l2-subdev.h:183): No description found for parameter 'try_ext_ctrls'
Warning(.//include/media/v4l2-subdev.h:183): No description found for parameter 'querymenu'
Warning(.//include/media/v4l2-subdev.h:183): No description found for parameter 'g_register'
Warning(.//include/media/v4l2-subdev.h:183): No description found for parameter 's_register'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
struct v4l2_subdev_core_ops has some kernel-doc-nano documentation
using a wrong format, with affects the number of stuff reported at
the DocBook device-drivers.xml.
Properly mark the such comment blocks using the right notation.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Warning(.//include/media/v4l2-mem2mem.h:50): No description found for parameter 'lock'
Warning(.//include/media/v4l2-mem2mem.h:50): No description found for parameter 'unlock'
Warning(.//include/media/v4l2-mem2mem.h:167): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:177): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:188): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:197): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:206): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:215): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:226): No description found for parameter 'm2m_ctx'
Warning(.//include/media/v4l2-mem2mem.h:235): No description found for parameter 'm2m_ctx'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Warning(.//include/media/v4l2-flash-led-class.h:51): bad line: unique in the system
Warning(.//include/media/v4l2-flash-led-class.h:56): bad line: definitions are available in the header file
Warning(.//include/media/v4l2-flash-led-class.h:57): bad line: <linux/led-class-flash.h>
Warning(.//include/media/v4l2-flash-led-class.h:122): No description found for parameter 'ops'
Warning(.//include/media/v4l2-flash-led-class.h:122): Excess function parameter 'flash_ops' description in 'v4l2_flash_init'
Warning(.//include/media/v4l2-flash-led-class.h:130): No description found for parameter 'v4l2_flash'
Warning(.//include/media/v4l2-flash-led-class.h:130): Excess function parameter 'flash' description in 'v4l2_flash_release'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Warning(.//include/media/rc-core.h:178): No description found for parameter 's_rx_carrier_range'
Warning(.//include/media/rc-core.h:178): Excess struct/union/enum/typedef member 's_rx_carrier' description in 'rc_dev'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Warning(.//include/media/v4l2-async.h:62): No description found for parameter 'match_type'
Warning(.//include/media/v4l2-async.h:62): Excess struct/union/enum/typedef member 'bus_type' description in 'v4l2_async_subdev'
Warning(.//include/media/v4l2-async.h:76): cannot understand function prototype: 'struct v4l2_async_notifier '
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Warning(.//include/media/media-devnode.h:80): No description found for parameter 'fops'
Warning(.//include/media/media-devnode.h:80): No description found for parameter 'dev'
Warning(.//include/media/media-devnode.h:80): No description found for parameter 'cdev'
Warning(.//include/media/media-devnode.h:80): No description found for parameter 'release'
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Acked-by: Jonathan Corbet <corbet@lwn.net>
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Merge tag 'media/v4.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
- a regression fix at the videobuf2 core driver
- fix error handling at mantis probing code
- revert the IR encode patches, as the API is not mature enough.
So, better to postpone the changes to a latter Kernel
- fix Kconfig breakages on some randconfig scenarios.
* tag 'media/v4.2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] mantis: Fix error handling in mantis_dma_init()
Revert "[media] rc: rc-ir-raw: Add scancode encoder callback"
Revert "[media] rc: rc-ir-raw: Add Manchester encoder (phase encoder) helper"
Revert "[media] rc: ir-rc5-decoder: Add encode capability"
Revert "[media] rc: ir-rc6-decoder: Add encode capability"
Revert "[media] rc: rc-core: Add support for encode_wakeup drivers"
Revert "[media] rc: rc-loopback: Add loopback of filter scancodes"
Revert "[media] rc: nuvoton-cir: Add support for writing wakeup samples via sysfs filter callback"
[media] vb2: Fix compilation breakage when !CONFIG_BUG
[media] vb2: Only requeue buffers immediately once streaming is started
[media] media/pci/cobalt: fix Kconfig and build when SND is not enabled
[media] media/dvb: fix ts2020.c Kconfig and build
This reverts commit 9869da5bac.
The current code is not mature enough, the API should allow a single
protocol to be specified. Also, the current code contains heuristics
that will depend on module load order.
Signed-off-by: David Härdeman <david@hardeman.nu>
Acked-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This reverts commit 0d830b2d12.
The current code is not mature enough, the API should allow a single
protocol to be specified. Also, the current code contains heuristics
that will depend on module load order.
Signed-off-by: David Härdeman <david@hardeman.nu>
Acked-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This reverts commit da7ee60b03.
The current code is not mature enough, the API should allow a single
protocol to be specified. Also, the current code contains heuristics
that will depend on module load order.
Signed-off-by: David Härdeman <david@hardeman.nu>
Acked-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Platforms using the OMAP3 ISP have all switched to DT, drop platform
data support.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Conversion to the use of pinned pfns made some functions unused. Remove
them. Also there's no need to lock mmap_sem in __buf_prepare() anymore.
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Provide simple helper functions to map virtual address range into an
array of pfns / pages.
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Looks like the word "contiguous" is often mistyped.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
The driver is tested on our hardware and all the implemented features
works as expected.
Missing features:
- CEC support
- HDCP repeater support
- IR support
Signed-off-by: Mats Randgaard <matrandg@cisco.com>
[hans.verkuil@cisco.com: updated copyright year to 2015]
[hans.verkuil@cisco.com: update confusing confctl_mutex comment]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add a new helper function called v4l2_subdev_notify_event() which will
deliver the specified event to both the v4l2 subdev event queue as well as
to the notify callback. The former is typically used by userspace
applications to listen to notification events while the later is used by
bridge drivers. Combining both into the same function avoids boilerplate
code in subdev drivers.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Buffers can be returned back to videobuf2 in driver's streamon handler. In
this case vb2_buffer_done() with buffer state VB2_BUF_STATE_QUEUED will
cause the driver's buf_queue vb2 operation to be called, queueing the same
buffer again only to be returned to videobuf2 using vb2_buffer_done() and so
on.
Add a new buffer state VB2_BUF_STATE_REQUEUEING which, when used as the
state argument to vb2_buffer_done(), will result in buffers queued to the
driver. Using VB2_BUF_STATE_QUEUED will leave the buffer to videobuf2, as it
was before "[media] vb2: allow requeuing buffers while streaming".
Fixes: ce0eff016f ("[media] vb2: allow requeuing buffers while streaming")
[mchehab@osg.samsung.com: fix warning: enumeration value 'VB2_BUF_STATE_REQUEUEING' not handled in switch]
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: stable@vger.kernel.org # for v4.1
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The LIRC protocol was always a bad fit and if we're ever going to expose
protocol numbers in a user-space API, it'd be better to get rid of the
LIRC "protocol" first.
The sysfs API is kept backwards compatible by always listing the lirc
protocol as present and enabled.
Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This patch changes rc-core to use the kernel facilities that are already
available for handling unique numbers instead of rolling its own bitmap
stuff.
Signed-off-by: David Härdeman <david@hardeman.nu>
Tested-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Added support for reduced blanking version 2 (RB v2) in cvt timings.
Standard specifies a fixed vsync pulse of 8 lines to indicate RB v2
timings. Vertical back porch is fixed at 6 lines and vertical front
porch is remainder of vertical blanking time.
For RB v2, horizontal blanking is fixed at 80 pixels. Horizontal sync
is fixed at 32. All horizontal timing counts (active pixels, front,
back porches) can be specified upto a precision of 1.
RB v2 allows for non standard aspect ratios. In RB v2 vsync does not
indicate aspect ratio. In absence of aspect ratio v4l2_detect_cvt()
cannot calculate image width from image height. Hence extending the
v4l2_detect_cvt() to pass image width in case of RB v2.
Signed-off-by: Prashant Laddha <prladdha@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Pull LED subsystem updates from Bryan Wu:
"In this cycle, we finished to merge patches for LED Flash class
driver.
Other than that we have some bug fixes and new drivers for LED
controllers"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds: (33 commits)
leds:lp55xx: fix firmware loading error
leds: fix max77693-led build errors
leds: fix aat1290 build errors
leds: aat1290: pass flags parameter to devm_gpiod_get
leds: ktd2692: pass flags parameter to devm_gpiod_get
drivers/leds: don't use module_init in non-modular leds-cobalt-raq.c
leds: aat1290: add support for V4L2 Flash sub-device
DT: aat1290: Document handling external strobe sources
leds: max77693: add support for V4L2 Flash sub-device
media: Add registration helpers for V4L2 flash sub-devices
v4l: async: Add a pointer to of_node to struct v4l2_subdev, match it
Documentation: leds: Add description of v4l2-flash sub-device
leds: add BCM6358 LED driver
leds: add DT binding for BCM6358 LED controller
leds: fix brightness changing when software blinking is active
Documentation: leds-lp5523: describe master fader attributes
leds: lp5523: add master_fader support
leds: leds-gpio: Allow compile test if !GPIOLIB
leds: leds-gpio: Add missing #include <linux/of.h>
gpiolib: Add missing dummies for the unified device properties interface
...
This patch adds helper functions for registering/unregistering
LED Flash class devices as V4L2 sub-devices. The functions should
be called from the LED subsystem device driver. In case the
support for V4L2 Flash sub-devices is disabled in the kernel
config the functions' empty versions will be used.
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Sakari Ailus <sakari.ailus@iki.fi>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
V4L2 async sub-devices are currently matched (OF case) based on the struct
device_node pointer in struct device. LED devices may have more than one
LED, and in that case the OF node to match is not directly the device's
node, but a LED's node.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Bryan Wu <cooloney@gmail.com>
This RC map was taken from Christoph Pinkl's patch
(http://patchwork.linuxtv.org/patch/7217/). It is used solely by the respective
mantis based card because the encoding is not known.
Signed-off-by: Jan Klötzke <jan@kloetzke.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This RC map was taken from Christoph Pinkl's patch
(http://patchwork.linuxtv.org/patch/7217/). It is used solely by the respective
mantis based card because the encoding is not known.
Signed-off-by: Jan Klötzke <jan@kloetzke.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This RC map was taken from Christoph Pinkl's patch
(http://patchwork.linuxtv.org/patch/7217/). It is used solely by the respective
mantis based card because the encoding is not known.
Signed-off-by: Jan Klötzke <jan@kloetzke.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The TS35 remote is distributed with TechniSat CableStar HD2 cards (mantis
chipset). The exact protocol type is unknown, making this rc map probably only
usable by mantis cards.
Signed-off-by: Jan Klötzke <jan@kloetzke.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Extend detect_cvt/gtf API to indicate the format type (interlaced
or progressive). In case of interlaced, the vertical front and back
porch and vsync values for both (odd,even) fields are considered to
derive image height. Populated vsync, vertical front, back porch
values in bt timing structure for even and odd fields and updated
the flags appropriately.
Also modified the functions calling the detect_cvt/gtf(). As of now
these functions are calling detect_cvt/gtf() with interlaced flag
set to false.
Cc: Martin Bugge <marbugge@cisco.com>
Cc: Mats Randgaard <matrandg@cisco.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Prashant Laddha <prladdha@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The adv7511 sets up InfoFrames that are used when transmitting video.
Log the contents of those InfoFrames so it is possible to see exactly what
the transmitter is sending.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Currently this driver mixes u8/u32 and uint8_t/uint32_t. Standardize on
u8/u32.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Currently this driver mixes u8/u16 and uint8_t/uint16_t. Standardize on
u8/u16.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This was never added for some reason, so add it now.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
In the past the transfer function was implied by the colorspace. However,
it is an independent entity in its own right. Add support for explicitly
choosing the transfer function.
This change will allow us to represent linear RGB (as is used by openGL), and
it will make it easier to work with decoded video material since most codecs
store the transfer function as a separate property as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This makes it easier for the bridge driver to just passthrough such
events to the corresponding device node.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
All drivers use custom notifications, in particular when source changes.
The bridge only has to map the subdev that sends it to whatever video node it is connected to.
Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@vodalys.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Replace the dummy video format operations by pad format operations that
configure the output format.
Copied from the adv7604 driver.
Note: while arch/blackfin/mach-bf609/boards/ezkit.c uses adv7842_platform_data
this source has not been updated because it is broken since the very
beginning. It depends on a struct adv7842_output_format that does not
exist.
And besides that gcc has no support for bf609 so nobody can compile it
except by installing a toolchain from ADI.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Nuvoton-cir utilizes the encoding capabilities of rc-core to convert
scancodes from user space to pulse/space format understood by the
underlying hardware.
Converted samples are then written to the wakeup fifo along with other
necessary configuration to enable wake up functionality.
Signed-off-by: Antti Seppälä <a.seppala@gmail.com>
Signed-off-by: James Hogan <james@albanarts.com>
Cc: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add support in rc-core for drivers which implement the wakeup scancode
filter by encoding the scancode using the raw IR encoders. This is by
way of rc_dev::encode_wakeup which should be set to true to make the
allowed wakeup protocols the same as the set of raw IR encoders.
As well as updating the sysfs interface to know which wakeup protocols
are allowed for encode_wakeup drivers, also ensure that the IR
decoders/encoders are loaded when an encode_wakeup driver is registered.
Signed-off-by: James Hogan <james@albanarts.com>
Signed-off-by: Antti Seppälä <a.seppala@gmail.com>
Cc: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add a callback to raw ir handlers for encoding and modulating a scancode
to a set of raw events. This could be used for transmit, or for
converting a wakeup scancode filter to a form that is more suitable for
raw hardware wake up filters.
Signed-off-by: James Hogan <james@albanarts.com>
Signed-off-by: Antti Seppälä <a.seppala@gmail.com>
Cc: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
If the last buffer was dequeued from a capture queue, let poll return
immediately and let DQBUF return -EPIPE to signal there will no more
buffers to dequeue until STREAMOFF.
The driver signals the last buffer by setting the V4L2_BUF_FLAG_LAST.
To reenable dequeuing on the capture queue, the driver must explicitly
call vb2_clear_last_buffer_queued. The last buffer queued flag is
cleared automatically during STREAMOFF.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Replace all calls to s_mbus_fmt in bridge drivers by calls to the
set_fmt pad op.
Remove the old try/s_mbus_fmt video ops since they are now no longer used.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Prabhakar Lad <prabhakar.csengg@gmail.com>
Acked-by: Scott Jiang <scott.jiang.linux@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The g_mbus_fmt video op is a duplicate of the pad op. Replace all uses
by the get_fmt pad op and remove the video op.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Prabhakar Lad <prabhakar.csengg@gmail.com>
Cc: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Replace all calls to the enum_mbus_fmt video op by the pad
enum_mbus_code op and remove the duplicate video op.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Scott Jiang <scott.jiang.linux@gmail.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Kamil Debski <k.debski@samsung.com>
Acked-by: Prabhakar Lad <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
You must use static inline otherwise you get these errors if CONFIG_OF is not defined:
In file included from drivers/media/platform/soc_camera/soc_camera.c:39:0:
include/media/v4l2-of.h:112:13: warning: 'v4l2_of_free_endpoint' defined but not used [-Wunused-function]
static void v4l2_of_free_endpoint(struct v4l2_of_endpoint *endpoint)
^
In file included from drivers/media/platform/soc_camera/atmel-isi.c:28:0:
include/media/v4l2-of.h:112:13: warning: 'v4l2_of_free_endpoint' defined but not used [-Wunused-function]
static void v4l2_of_free_endpoint(struct v4l2_of_endpoint *endpoint)
^
In file included from drivers/media/platform/soc_camera/rcar_vin.c:36:0:
include/media/v4l2-of.h:112:13: warning: 'v4l2_of_free_endpoint' defined but not used [-Wunused-function]
static void v4l2_of_free_endpoint(struct v4l2_of_endpoint *endpoint)
^
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add device tree support for adp1653 flash LED driver.
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The link-frequencies property is a variable length array of link frequencies
in an endpoint. The array is needed by an increasing number of drivers, so
it makes sense to add it to struct v4l2_of_endpoint.
However, the length of the array is variable and the size of struct
v4l2_of_endpoint is fixed since it is allocated by the caller. The options
here are
1. to define a fixed maximum limit of link frequencies that has to be the
global maximum of all boards. This is seen as problematic since the maximum
could be largish, and everyone hitting the problem would need to submit a
patch to fix it, or
2. parse the property in every driver. This doesn't sound appealing as two
of the three implementations submitted to linux-media were wrong, and one of
them was even merged before this was noticed, or
3. change the interface so that allocating and releasing memory according to
the size of the array is possible. This is what the patch does.
v4l2_of_alloc_parse_endpoint() is just like v4l2_of_parse_endpoint(), but it
will allocate the memory resources needed to store struct v4l2_of_endpoint
and the additional arrays pointed to by this struct. A corresponding release
function v4l2_of_free_endpoint() is provided to release the memory allocated
by v4l2_of_alloc_parse_endpoint().
In addition to this, the link-frequencies property is parsed as well, and
the result is stored to struct v4l2_of_endpoint field link_frequencies.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Zero the entire struct starting from bus_type. As more fields are added, no
changes will be needed in the function to reset their value explicitly.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The field is unused. Remove it.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
* patchwork: (404 commits)
[media] uvcvideo: add support for VIDIOC_QUERY_EXT_CTRL
[media] uvcvideo: fix cropcap v4l2-compliance failure
[media] media: omap3isp: remove unused clkdev
[media] coda: Add tracing support
[media] coda: drop dma_sync_single_for_device in coda_bitstream_queue
[media] coda: fix fill bitstream errors in nonstreaming case
[media] coda: call SEQ_END when the first queue is stopped
[media] coda: fail to start streaming if userspace set invalid formats
[media] coda: remove duplicate error messages for buffer allocations
[media] coda: move parameter buffer in together with context buffer allocation
[media] coda: allocate bitstream buffer from REQBUFS, size depends on the format
[media] coda: allocate per-context buffers from REQBUFS
[media] coda: use strlcpy instead of snprintf
[media] coda: bitstream payload is unsigned
[media] coda: fix double call to debugfs_remove
[media] coda: check kasprintf return value in coda_open
[media] coda: bitrate can only be set in kbps steps
[media] v4l2-mem2mem: no need to initialize b in v4l2_m2m_next_buf and v4l2_m2m_buf_remove
[media] s5p-mfc: set allow_zero_bytesused flag for vb2_queue_init
[media] coda: set allow_zero_bytesused flag for vb2_queue_init
...
No merged platform supplies xclks via platform data. As we want to
slightly change the clkdev interface, rather than fixing this unused
code, remove it instead.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The vb2: fix bytesused == 0 handling (8a75ffb) patch changed the behavior
of __fill_vb2_buffer function, so that if bytesused is 0 it is set to the
size of the buffer. However, bytesused set to 0 is used by older codec
drivers as as indication used to mark the end of stream.
To keep backward compatibility, this patch adds a flag passed to the
vb2_queue_init function - allow_zero_bytesused. If the flag is set upon
initialization of the queue, the videobuf2 keeps the value of bytesused
intact in the OUTPUT queue and passes it to the driver.
Reported-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This patch splits the io_flags member of vb2_queue into a bit field.
Instead of an enum with flags separate bit fields were introduced.
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The function fills a link data structure with the device node and port
number at both the local and remote ends of a link defined by one of its
endpoint nodes.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Currently, there's no documentation for the structure. Add a
kernel-doc nano documentation to it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Embed the video_device struct to simplify the error handling and in
order to (eventually) get rid of video_device_alloc/release.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Embed the video_device struct to simplify the error handling and in
order to (eventually) get rid of video_device_alloc/release.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
this patch adds support for omnivision's ov2659
sensor, the driver supports following features:
1: Asynchronous probing
2: DT support
3: Media controller support
Signed-off-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
V4L2 clocks, e.g. used by camera sensors for their master clock, do not
have to be supplied by a different V4L2 driver, they can also be
supplied by an independent source. In this case the standart kernel
clock API should be used to handle such clocks. This patch adds support
for such cases.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
All uses of the v4l2_clk API so far only register one clock with a fixed
name. This allows us to get rid of it, which also will make CCF and DT
integration easier.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add lane_polarities field to struct v4l2_of_bus_mipi_csi2 and write the
contents of the lane-polarities property to it. The field tells the polarity
of the physical lanes starting from the first one. Any unused lanes are
ignored, i.e. only the polarity of the used lanes is specified.
Also rework reading the "data-lanes" property a little.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The video port clock is l3_ick divided by vpclk_div. This clock must be high
enough for the external pixel rate. The video port requires two clock cycles
to process a pixel.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Make omap3isp configuration data structures more suitable for consumption by
the DT by separating the I2C bus information of all the sub-devices in a
group and the ISP bus information from each other. The ISP bus information
is made a pointer instead of being directly embedded in the struct.
In the case of the DT only the sensor specific information on the ISP bus
configuration is retained. The structs are renamed to reflect that.
After this change the structs needed to describe device configuration can be
allocated and accessed separately without those needed only in the case of
platform data. The platform data related structs can be later removed once
the support for platform data can be removed.
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Igor Grinberg <grinberg@compulab.co.il> (for cm-t35)
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The video and pad ops are duplicates, so get rid of the more limited video op.
The whole point of the subdev API is to allow reuse of subdev drivers by
bridge drivers. Having duplicate ops makes that much harder. We should never
have allowed duplicate ops in the first place. A lesson for the future.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
If a subdevice pad op is called from a bridge driver, then there is
no v4l2_subdev_fh struct that can be passed to the subdevice. This
made it hard to use such subdevs from a bridge driver.
This patch replaces the v4l2_subdev_fh pointer by a v4l2_subdev_pad_config
pointer in the pad ops. This allows bridge drivers to use the various
try_ pad ops by creating a v4l2_subdev_pad_config struct and passing it
along to the pad op.
The v4l2_subdev_get_try_* macros had to be changed because of this, so
I also took the opportunity to use the full name of the v4l2_subdev_get_try_*
functions in the __V4L2_SUBDEV_MK_GET_TRY macro arguments: if you now do
'git grep v4l2_subdev_get_try_format' you will actually find the header
where it is defined.
One remark regarding the drivers/staging/media/davinci_vpfe patches: the
*_init_formats() functions assumed that fh could be NULL. However, that's
not true for this driver, it's always set. This is almost certainly a copy
and paste from the omap3isp driver. I've updated the code to reflect the
fact that fh is never NULL.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Tested-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The handling of VIDIOC_G/S_PRIORITY is now entirely done by the V4L2
core, so we can drop the g/s_priority ioctl ops.
We do have to make sure though that when S_PRIORITY is called we check
that the driver used struct v4l2_fh. This check can be removed once all
drivers are converted to that structure.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
To keep V4L2 drivers that did not yet convert to unlocked_ioctl happy,
the v4l2 core had a .ioctl file operation that took a V4L2 lock.
The last drivers are now converted to unlocked_ioctl, so all this
old code can now be removed.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
It is confusing which parts of the driver are adv7604 specific, adv7611
specific or common for both. This patch renames any adv7604 prefixes (both
for functions and defines) to adv76xx whenever they are common.
Signed-off-by: Pablo Anton <pablo.anton@vodalys-labs.com>
Signed-off-by: Jean-Michel Hautbois <jean-michel.hautbois@vodalys.com>
[hans.verkuil@cisco.com: rebased and renamed ADV76xx_fsc to ADV76XX_FSC]
[hans.verkuil@cisco.com: kept the existing adv7604 driver name]
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The burst length could be BEATS_4/8/16. Before this patch, isi use default
value BEATS_4. To imporve the performance we could set it to BEATS_16.
Otherwise sometime it would cause the ISI overflow error.
Reported-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Josh Wu <josh.wu@atmel.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The previous provision for DVB media controller support were to
define an ID (likely meaning the adapter number) for the DVB
devnodes.
This is just plain wrong. Just like V4L, DVB devices (and any other
device node)) are uniquely identified via a (major, minor) tuple.
This is enough to uniquely identify a devnode, no matter what
API it implements.
So, before we go too far, let's mark the old v4l, fb, dvb and alsa
"devnode" info as deprecated, and just call it as "dev".
We can latter add fields specific to each API if needed.
As we don't want to break compilation on already existing apps,
let's just keep the old definitions as-is, adding a note that
those are deprecated at media-entity.h.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Split ioctl interface from enum_freq_bands, g_tuner and s_hw_freq_seek
functions and export them to be used in other drivers like bttv.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The videobuf_dma_init* and videobuf_dma_map() functions are no longer
used except in videobuf-dma-sg.c itself. Make them static.
These functions were abused in various drivers. All those drivers
have now been fixed, so by no longer exporting these functions
future abuse is now prevented.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The old debug field is renamed to dev_debug to ensure that existing drivers
(including out-of-tree drivers) that try to use the old name will no longer
compile. A comment has also been added that makes it explicit that drivers
shouldn't use this field.
Additional bits have been added to the debug flag to be more fine-grained
when debugging, especially when dealing with streaming ioctls and read,
write and poll. You want to enable those explicitly to prevent flooding
the log when streaming unless you actually want to do that.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Weird, this op isn't used at all. Seems to be orphaned code.
Remove it.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Drop the duplicate get/set_crop pad ops and only use get/set_selection.
It makes no sense to have two duplicate ops in the internal subdev API.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
1) This is not allowed by the kernel coding style
2) Just configure your editor correctly
3) It's really ugly
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add and copy the new ycbcr_enc and quantization fields.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Require that dma-sg also uses an allocation context. This is in preparation
for adding prepare/finish memops to sync the memory between DMA and CPU.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Pawel Osciak <pawel@osciak.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This is needed for the next patch where the dma-sg alloc memop needs
to know the dma_dir.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Pawel Osciak <pawel@osciak.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The 'write' argument is very ambiguous. I first assumed that if it is 1,
then we're doing video output but instead it meant the reverse.
Since it is used to setup the dma_dir value anyway it is now replaced by
the correct dma_dir value which is unambiguous.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Pawel Osciak <pawel@osciak.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Document that drivers can access/modify the buffer contents in buf_prepare
and buf_finish. That was not clearly stated before.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Pawel Osciak <pawel@osciak.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The v4l2_ctrl_check() helper function is now only used in cx2341x.
Move it there and make it static.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
For some unknown reason several control prototypes where in v4l2-common.c
instead of in v4l2-ctrls.h. Move them and document them.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Several control helper functions are no longer needed since most drivers
are now converted to the control framework. So we can delete them.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Remove unreferenced members from the platform
data's structure.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Add device tree support by changing the device registration order.
In the device tree the si4713 node is a normal I2C device, which
will be probed as such. Thus the V4L device must be probed from
the I2C device and not the other way around.
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
In order to have subsytem agnostic media bus format definitions we've
moved media bus definition to include/uapi/linux/media-bus-format.h and
prefixed values with MEDIA_BUS_FMT instead of V4L2_MBUS_FMT.
Reference new definitions in all platform drivers.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Replace references to the v4l2_mbus_pixelcode enum with the new
media_bus_format enum in all common headers.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
this patch adds support for vidioc_create_bufs. Along side
remove unneeded member numbuffers.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
We can use kfifo_initialized() to check if the fifo in lirc_buffer is
initialized or not. There's no need to have a dedicated fifo status
variable in lirc_buffer.
[m.chehab@samsung.com: add the same change to lirc_zilog, to avoid
breaking compilation of staging drivers]
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
this patch uses vb2_is_busy() helper to check if streaming is
actually started, instead of driver managing it.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
this patch converts the driver to use fh handling provided by the
v4l core instead of driver doing it.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This RC will be used by DVBSky driver, added on the next patch.
Signed-off-by: Nibble Max <nibble.max@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The buffer flags are incorrectly referred to as V4L2_BUF_FLAGS_* instead
of V4L2_BUF_FLAG_* in comments. Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The recent conversion of saa7134 to vb2 unconvered a poll() bug that
broke the teletext applications alevt and mtt. These applications
expect that calling poll() without having called VIDIOC_STREAMON will
cause poll() to return POLLERR. That did not happen in vb2.
This patch fixes that behavior. It also fixes what should happen when
poll() is called when STREAMON is called but no buffers have been
queued. In that case poll() will also return POLLERR, but only for
capture queues since output queues will always return POLLOUT
anyway in that situation.
This brings the vb2 behavior in line with the old videobuf behavior.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The comment for start_streaming that tells the developer with which vb2 state
buffers should be returned to vb2 gave the wrong state. Very confusing.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
this patch adds a helper to get the status if start_streaming()
was called successfully.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Cc: Pawel Osciak <pawel@osciak.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
The fpc_table_addr is used as an unsigned integer that stores
an address. At the Kernel, the proper type for such integers
is unsigned long.
This generates lots of warnings when compiling on 64 bits.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
The following lockdep warning has been there ever since commit a517cca6b2
one year ago:
[ 403.117947] ======================================================
[ 403.117949] [ INFO: possible circular locking dependency detected ]
[ 403.117953] 3.16.0-rc6-test-media #961 Not tainted
[ 403.117954] -------------------------------------------------------
[ 403.117956] v4l2-ctl/15377 is trying to acquire lock:
[ 403.117959] (&dev->mutex#3){+.+.+.}, at: [<ffffffffa005a6c3>] vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[ 403.117974]
[ 403.117974] but task is already holding lock:
[ 403.117976] (&mm->mmap_sem){++++++}, at: [<ffffffff8118291f>] vm_mmap_pgoff+0x6f/0xc0
[ 403.117987]
[ 403.117987] which lock already depends on the new lock.
[ 403.117987]
[ 403.117990]
[ 403.117990] the existing dependency chain (in reverse order) is:
[ 403.117992]
[ 403.117992] -> #1 (&mm->mmap_sem){++++++}:
[ 403.117997] [<ffffffff810d733c>] validate_chain.isra.39+0x5fc/0x9a0
[ 403.118006] [<ffffffff810d8bc3>] __lock_acquire+0x4d3/0xd30
[ 403.118010] [<ffffffff810d9da7>] lock_acquire+0xa7/0x160
[ 403.118014] [<ffffffff8118c9ec>] might_fault+0x7c/0xb0
[ 403.118018] [<ffffffffa0028a25>] video_usercopy+0x425/0x610 [videodev]
[ 403.118028] [<ffffffffa0028c25>] video_ioctl2+0x15/0x20 [videodev]
[ 403.118034] [<ffffffffa0022764>] v4l2_ioctl+0x184/0x1a0 [videodev]
[ 403.118040] [<ffffffff811d77d0>] do_vfs_ioctl+0x2f0/0x4f0
[ 403.118307] [<ffffffff811d7a51>] SyS_ioctl+0x81/0xa0
[ 403.118311] [<ffffffff8199dc69>] system_call_fastpath+0x16/0x1b
[ 403.118319]
[ 403.118319] -> #0 (&dev->mutex#3){+.+.+.}:
[ 403.118324] [<ffffffff810d6a96>] check_prevs_add+0x746/0x9f0
[ 403.118329] [<ffffffff810d733c>] validate_chain.isra.39+0x5fc/0x9a0
[ 403.118333] [<ffffffff810d8bc3>] __lock_acquire+0x4d3/0xd30
[ 403.118336] [<ffffffff810d9da7>] lock_acquire+0xa7/0x160
[ 403.118340] [<ffffffff81999664>] mutex_lock_interruptible_nested+0x64/0x640
[ 403.118344] [<ffffffffa005a6c3>] vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[ 403.118349] [<ffffffffa0022122>] v4l2_mmap+0x62/0xa0 [videodev]
[ 403.118354] [<ffffffff81197270>] mmap_region+0x3d0/0x5d0
[ 403.118359] [<ffffffff8119778d>] do_mmap_pgoff+0x31d/0x400
[ 403.118363] [<ffffffff81182940>] vm_mmap_pgoff+0x90/0xc0
[ 403.118366] [<ffffffff81195cef>] SyS_mmap_pgoff+0x1df/0x2a0
[ 403.118369] [<ffffffff810085c2>] SyS_mmap+0x22/0x30
[ 403.118376] [<ffffffff8199dc69>] system_call_fastpath+0x16/0x1b
[ 403.118381]
[ 403.118381] other info that might help us debug this:
[ 403.118381]
[ 403.118383] Possible unsafe locking scenario:
[ 403.118383]
[ 403.118385] CPU0 CPU1
[ 403.118387] ---- ----
[ 403.118388] lock(&mm->mmap_sem);
[ 403.118391] lock(&dev->mutex#3);
[ 403.118394] lock(&mm->mmap_sem);
[ 403.118397] lock(&dev->mutex#3);
[ 403.118400]
[ 403.118400] *** DEADLOCK ***
[ 403.118400]
[ 403.118403] 1 lock held by v4l2-ctl/15377:
[ 403.118405] #0: (&mm->mmap_sem){++++++}, at: [<ffffffff8118291f>] vm_mmap_pgoff+0x6f/0xc0
[ 403.118411]
[ 403.118411] stack backtrace:
[ 403.118415] CPU: 0 PID: 15377 Comm: v4l2-ctl Not tainted 3.16.0-rc6-test-media #961
[ 403.118418] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/31/2013
[ 403.118420] ffffffff82a6c9d0 ffff8800af37fb00 ffffffff819916a2 ffffffff82a6c9d0
[ 403.118425] ffff8800af37fb40 ffffffff810d5715 ffff8802308e4200 0000000000000000
[ 403.118429] ffff8802308e4a48 ffff8802308e4a48 ffff8802308e4200 0000000000000001
[ 403.118433] Call Trace:
[ 403.118441] [<ffffffff819916a2>] dump_stack+0x4e/0x7a
[ 403.118445] [<ffffffff810d5715>] print_circular_bug+0x1d5/0x2a0
[ 403.118449] [<ffffffff810d6a96>] check_prevs_add+0x746/0x9f0
[ 403.118455] [<ffffffff8119c172>] ? find_vmap_area+0x42/0x70
[ 403.118459] [<ffffffff810d733c>] validate_chain.isra.39+0x5fc/0x9a0
[ 403.118463] [<ffffffff810d8bc3>] __lock_acquire+0x4d3/0xd30
[ 403.118468] [<ffffffff810d9da7>] lock_acquire+0xa7/0x160
[ 403.118472] [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[ 403.118476] [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[ 403.118480] [<ffffffff81999664>] mutex_lock_interruptible_nested+0x64/0x640
[ 403.118484] [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[ 403.118488] [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[ 403.118493] [<ffffffff810d8055>] ? mark_held_locks+0x75/0xa0
[ 403.118497] [<ffffffffa005a6c3>] vb2_fop_mmap+0x33/0x90 [videobuf2_core]
[ 403.118502] [<ffffffffa0022122>] v4l2_mmap+0x62/0xa0 [videodev]
[ 403.118506] [<ffffffff81197270>] mmap_region+0x3d0/0x5d0
[ 403.118510] [<ffffffff8119778d>] do_mmap_pgoff+0x31d/0x400
[ 403.118513] [<ffffffff81182940>] vm_mmap_pgoff+0x90/0xc0
[ 403.118517] [<ffffffff81195cef>] SyS_mmap_pgoff+0x1df/0x2a0
[ 403.118521] [<ffffffff810085c2>] SyS_mmap+0x22/0x30
[ 403.118525] [<ffffffff8199dc69>] system_call_fastpath+0x16/0x1b
The reason is that vb2_fop_mmap and vb2_fop_get_unmapped_area take the core lock
while they are called with the mmap_sem semaphore held. But elsewhere in the code
the core lock is taken first but calls to copy_to/from_user() can take the mmap_sem
semaphore as well, potentially causing a classical A-B/B-A deadlock.
However, the mmap/get_unmapped_area calls really shouldn't take the core lock
at all. So what would happen if they don't take the core lock anymore?
There are two situations that need to be taken into account: calling mmap while
new buffers are being added and calling mmap while buffers are being deleted.
The first case works almost fine without a lock: in all cases mmap relies on
correctly filled-in q->num_buffers/q->num_planes values and those are only
updated by reqbufs and create_buffers *after* any new buffers have been
initialized completely. Except in one case: if an error occurred while allocating
the buffers it will increase num_buffers and rely on __vb2_queue_free to
decrease it again. So there is a short period where the buffer information
may be wrong.
The second case definitely does pose a problem: buffers may be in the process
of being deleted, without the internal structure being updated.
In order to fix this a new mutex is added to vb2_queue that is taken when
buffers are allocated or deleted, and in vb2_mmap. That way vb2_mmap won't
get stale buffer data. Note that this is a problem only for MEMORY_MMAP, so
even though __qbuf_userptr and __qbuf_dmabuf also mess around with buffers
(mem_priv in particular), this doesn't clash with vb2_mmap or
vb2_get_unmapped_area since those are MMAP specific.
As an additional bonus the hack in __buf_prepare, the USERPTR case, can be
removed as well since mmap() no longer takes the core lock.
All in all a much cleaner solution.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
When the CCDC input is interlaced enable the alternate field order on
the CCDC output video node. The field signal polarity is specified
through platform data.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Enrico Butera <ebutera@users.sourceforge.net>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This protocol is found on Dreambox remotes
[m.chehab@samsung.com: CodingStyle fixes and conflict fix]
Signed-off-by: Marcel Mol <marcel@mesa.nl>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Multiple pinctrl states are defined for 8, 16 and 24 data pin groups in PPI peripheral.
The driver should select correct group before set up further PPI parameters.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
if the pinctrl driver is enabled.
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Patch originally written by Konrad. Rebased on current linux media tree.
Under Xen, vmalloc_32() isn't guaranteed to return pages which are really
under 4G in machine physical addresses (only in virtual pseudo-physical
addresses). To work around this, implement a vmalloc variant which
allocates each page with dma_alloc_coherent() to guarantee that each
page is suitable for the device in question.
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: James Harper <james.harper@ejbdigital.com.au>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
