Add a control to set intra-refresh period.
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
These for-loops should test against v4l2_dv_timings_presets[i].bt.width,
not if i < v4l2_dv_timings_presets[i].bt.width. Luckily nothing ever broke,
since the smallest width is still a lot higher than the total number of
presets, but it is wrong.
The last item in the presets array is all 0, so the for-loop must stop
when it reaches that sentinel.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reported-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Setting LED brightness may return an error but the return value was never
checked by the V4L2 flash LED class. Do it now.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The V4L2 flash API supports combinations of indicator and flash LEDs. Due
to this, there's a fair amount of code that deals with all the possible
options and just reading one part of the file doesn't really tell which
combinations are really possible.
Make the checks more explicit to keep static analysers happy and to make
the code more resilient to future mishaps.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Prefer 'unsigned int' to bare use of 'unsigned'.
So modified variable type 'unsigned' to 'unsigned int' in v4l2-event.c.
Signed-off-by: lijian <lijian@yulong.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
I spotted a minor difference is handling of unregistered devices
between native and compat ioctls: the native handler never tries
to call into the driver if a device is not marked as registered.
I did not check whether this can cause issues in the kernel, or
just a different between return codes, but it clearly makes
sense that both should behave the same way.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Converting the VIDIOC_DQEVENT_TIME32/VIDIOC_DQEVENT32/
VIDIOC_DQEVENT32_TIME32 arguments to the canonical form is done in common
code, but for some reason I ended up adding another conversion helper to
subdev_do_ioctl() as well. I must have concluded that this does not go
through the common conversion, but it has done that since the ioctl
handler was first added.
I assume this one is harmless as there should be no way to arrive here
from user space if CONFIG_COMPAT_32BIT_TIME is set, but since it is dead
code, it should just get removed.
On a 64-bit architecture, as well as a 32-bit architecture without
CONFIG_COMPAT_32BIT_TIME, handling this command is a mistake,
and the kernel should return an error.
Fixes: 1a6c0b36dd ("media: v4l2-core: fix VIDIOC_DQEVENT for time64 ABI")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The initialization was indented with an extra tab in most lines,
remove them to get the normal coding style.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
As seen from a recent syzbot bug report, mistakes in the compat ioctl
implementation can lead to uninitialized kernel stack data getting used
as input for driver ioctl handlers.
The reported bug is now fixed, but it's possible that other related
bugs are still present or get added in the future. As the drivers need
to check user input already, the possible impact is fairly low, but it
might still cause an information leak.
To be on the safe side, always clear the entire ioctl buffer before
calling the conversion handler functions that are meant to initialize
them.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Syzbot found that passing ioctl command 0xc0505609 into a 64-bit
kernel from a 32-bit process causes uninitialized kernel memory to
get passed to drivers instead of the user space data:
BUG: KMSAN: uninit-value in check_array_args drivers/media/v4l2-core/v4l2-ioctl.c:3041 [inline]
BUG: KMSAN: uninit-value in video_usercopy+0x1631/0x3d30 drivers/media/v4l2-core/v4l2-ioctl.c:3315
CPU: 0 PID: 19595 Comm: syz-executor.4 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x21c/0x280 lib/dump_stack.c:120
kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
__msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
check_array_args drivers/media/v4l2-core/v4l2-ioctl.c:3041 [inline]
video_usercopy+0x1631/0x3d30 drivers/media/v4l2-core/v4l2-ioctl.c:3315
video_ioctl2+0x9f/0xb0 drivers/media/v4l2-core/v4l2-ioctl.c:3391
v4l2_ioctl+0x255/0x290 drivers/media/v4l2-core/v4l2-dev.c:360
v4l2_compat_ioctl32+0x2c6/0x370 drivers/media/v4l2-core/v4l2-compat-ioctl32.c:1248
__do_compat_sys_ioctl fs/ioctl.c:842 [inline]
__se_compat_sys_ioctl+0x53d/0x1100 fs/ioctl.c:793
__ia32_compat_sys_ioctl+0x4a/0x70 fs/ioctl.c:793
do_syscall_32_irqs_on arch/x86/entry/common.c:79 [inline]
__do_fast_syscall_32+0x102/0x160 arch/x86/entry/common.c:141
do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:166
do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:209
entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
The time32 commands are defined but were never meant to be called on
64-bit machines, as those have always used time64 interfaces. I missed
this in my patch that introduced the time64 handling on 32-bit platforms.
The problem in this case is the mismatch of one function checking for
the numeric value of the command and another function checking for the
type of process (native vs compat) instead, with the result being that
for this combination, nothing gets copied into the buffer at all.
Avoid this by only trying to convert the time32 commands when running
on a 32-bit kernel where these are defined in a meaningful way.
[hverkuil: fix 3 warnings: switch with no cases]
Fixes: 577c89b0ce ("media: v4l2-core: fix v4l2_buffer handling for time64 ABI")
Reported-by: syzbot+142888ffec98ab194028@syzkaller.appspotmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
We have 'struct v4l2_subdev_pad_config' which contains configuration for
a single pad used for the TRY functionality, and an array of those
structs is passed to various v4l2_subdev_pad_ops.
I was working on subdev internal routing between pads, and realized that
there's no way to add TRY functionality for routes, which is not pad
specific configuration. Adding a separate struct for try-route config
wouldn't work either, as e.g. set-fmt needs to know the try-route
configuration to propagate the settings.
This patch adds a new struct, 'struct v4l2_subdev_state' (which at the
moment only contains the v4l2_subdev_pad_config array) and the new
struct is used in most of the places where v4l2_subdev_pad_config was
used. All v4l2_subdev_pad_ops functions taking v4l2_subdev_pad_config
are changed to instead take v4l2_subdev_state.
The changes to drivers/media/v4l2-core/v4l2-subdev.c and
include/media/v4l2-subdev.h were written by hand, and all the driver
changes were done with the semantic patch below. The spatch needs to be
applied to a select list of directories. I used the following shell
commands to apply the spatch:
dirs="drivers/media/i2c drivers/media/platform drivers/media/usb drivers/media/test-drivers/vimc drivers/media/pci drivers/staging/media"
for dir in $dirs; do spatch -j8 --dir --include-headers --no-show-diff --in-place --sp-file v4l2-subdev-state.cocci $dir; done
Note that Coccinelle chokes on a few drivers (gcc extensions?). With
minor changes we can make Coccinelle run fine, and these changes can be
reverted after spatch. The diff for these changes is:
For drivers/media/i2c/s5k5baf.c:
@@ -1481,7 +1481,7 @@ static int s5k5baf_set_selection(struct v4l2_subdev *sd,
&s5k5baf_cis_rect,
v4l2_subdev_get_try_crop(sd, cfg, PAD_CIS),
v4l2_subdev_get_try_compose(sd, cfg, PAD_CIS),
- v4l2_subdev_get_try_crop(sd, cfg, PAD_OUT)
+ v4l2_subdev_get_try_crop(sd, cfg, PAD_OUT),
};
s5k5baf_set_rect_and_adjust(rects, rtype, &sel->r);
return 0;
For drivers/media/platform/s3c-camif/camif-capture.c:
@@ -1230,7 +1230,7 @@ static int s3c_camif_subdev_get_fmt(struct v4l2_subdev *sd,
*mf = camif->mbus_fmt;
break;
- case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
+ case CAMIF_SD_PAD_SOURCE_C:
/* crop rectangle at camera interface input */
mf->width = camif->camif_crop.width;
mf->height = camif->camif_crop.height;
@@ -1332,7 +1332,7 @@ static int s3c_camif_subdev_set_fmt(struct v4l2_subdev *sd,
}
break;
- case CAMIF_SD_PAD_SOURCE_C...CAMIF_SD_PAD_SOURCE_P:
+ case CAMIF_SD_PAD_SOURCE_C:
/* Pixel format can be only changed on the sink pad. */
mf->code = camif->mbus_fmt.code;
mf->width = crop->width;
The semantic patch is:
// <smpl>
// Change function parameter
@@
identifier func;
identifier cfg;
@@
func(...,
- struct v4l2_subdev_pad_config *cfg
+ struct v4l2_subdev_state *sd_state
, ...)
{
<...
- cfg
+ sd_state
...>
}
// Change function declaration parameter
@@
identifier func;
identifier cfg;
type T;
@@
T func(...,
- struct v4l2_subdev_pad_config *cfg
+ struct v4l2_subdev_state *sd_state
, ...);
// Change function return value
@@
identifier func;
@@
- struct v4l2_subdev_pad_config
+ struct v4l2_subdev_state
*func(...)
{
...
}
// Change function declaration return value
@@
identifier func;
@@
- struct v4l2_subdev_pad_config
+ struct v4l2_subdev_state
*func(...);
// Some drivers pass a local pad_cfg for a single pad to a called function. Wrap it
// inside a pad_state.
@@
identifier func;
identifier pad_cfg;
@@
func(...)
{
...
struct v4l2_subdev_pad_config pad_cfg;
+ struct v4l2_subdev_state pad_state = { .pads = &pad_cfg };
<+...
(
v4l2_subdev_call
|
sensor_call
|
isi_try_fse
|
isc_try_fse
|
saa_call_all
)
(...,
- &pad_cfg
+ &pad_state
,...)
...+>
}
// If the function uses fields from pad_config, access via state->pads
@@
identifier func;
identifier state;
@@
func(...,
struct v4l2_subdev_state *state
, ...)
{
<...
(
- state->try_fmt
+ state->pads->try_fmt
|
- state->try_crop
+ state->pads->try_crop
|
- state->try_compose
+ state->pads->try_compose
)
...>
}
// If the function accesses the filehandle, use fh->state instead
@@
struct v4l2_subdev_fh *fh;
@@
- fh->pad
+ fh->state
@@
struct v4l2_subdev_fh fh;
@@
- fh.pad
+ fh.state
// Start of vsp1 specific
@@
@@
struct vsp1_entity {
...
- struct v4l2_subdev_pad_config *config;
+ struct v4l2_subdev_state *config;
...
};
@@
symbol entity;
@@
vsp1_entity_init(...)
{
...
entity->config =
- v4l2_subdev_alloc_pad_config
+ v4l2_subdev_alloc_state
(&entity->subdev);
...
}
@@
symbol entity;
@@
vsp1_entity_destroy(...)
{
...
- v4l2_subdev_free_pad_config
+ v4l2_subdev_free_state
(entity->config);
...
}
@exists@
identifier func =~ "(^vsp1.*)|(hsit_set_format)|(sru_enum_frame_size)|(sru_set_format)|(uif_get_selection)|(uif_set_selection)|(uds_enum_frame_size)|(uds_set_format)|(brx_set_format)|(brx_get_selection)|(histo_get_selection)|(histo_set_selection)|(brx_set_selection)";
symbol config;
@@
func(...) {
...
- struct v4l2_subdev_pad_config *config;
+ struct v4l2_subdev_state *config;
...
}
// End of vsp1 specific
// Start of rcar specific
@@
identifier sd;
identifier pad_cfg;
@@
rvin_try_format(...)
{
...
- struct v4l2_subdev_pad_config *pad_cfg;
+ struct v4l2_subdev_state *sd_state;
...
- pad_cfg = v4l2_subdev_alloc_pad_config(sd);
+ sd_state = v4l2_subdev_alloc_state(sd);
<...
- pad_cfg
+ sd_state
...>
- v4l2_subdev_free_pad_config(pad_cfg);
+ v4l2_subdev_free_state(sd_state);
...
}
// End of rcar specific
// Start of rockchip specific
@@
identifier func =~ "(rkisp1_rsz_get_pad_fmt)|(rkisp1_rsz_get_pad_crop)|(rkisp1_rsz_register)";
symbol rsz;
symbol pad_cfg;
@@
func(...)
{
+ struct v4l2_subdev_state state = { .pads = rsz->pad_cfg };
...
- rsz->pad_cfg
+ &state
...
}
@@
identifier func =~ "(rkisp1_isp_get_pad_fmt)|(rkisp1_isp_get_pad_crop)";
symbol isp;
symbol pad_cfg;
@@
func(...)
{
+ struct v4l2_subdev_state state = { .pads = isp->pad_cfg };
...
- isp->pad_cfg
+ &state
...
}
@@
symbol rkisp1;
symbol isp;
symbol pad_cfg;
@@
rkisp1_isp_register(...)
{
+ struct v4l2_subdev_state state = { .pads = rkisp1->isp.pad_cfg };
...
- rkisp1->isp.pad_cfg
+ &state
...
}
// End of rockchip specific
// Start of tegra-video specific
@@
identifier sd;
identifier pad_cfg;
@@
__tegra_channel_try_format(...)
{
...
- struct v4l2_subdev_pad_config *pad_cfg;
+ struct v4l2_subdev_state *sd_state;
...
- pad_cfg = v4l2_subdev_alloc_pad_config(sd);
+ sd_state = v4l2_subdev_alloc_state(sd);
<...
- pad_cfg
+ sd_state
...>
- v4l2_subdev_free_pad_config(pad_cfg);
+ v4l2_subdev_free_state(sd_state);
...
}
@@
identifier sd_state;
@@
__tegra_channel_try_format(...)
{
...
struct v4l2_subdev_state *sd_state;
<...
- sd_state->try_crop
+ sd_state->pads->try_crop
...>
}
// End of tegra-video specific
// </smpl>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Add decode params control and the associated structure to group
all the information that are needed to decode a reference frame as
is described in ITU-T Rec. H.265 section "8.3.2 Decoding process
for reference picture set".
Adapt Cedrus driver to these changes.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
void function videobuf_vm_close return statements are not generally useful,
so deleted the return in function videobuf_vm_close().
Signed-off-by: lijian <lijian@yulong.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Macros starting with if should be enclosed by a do - while loop
to avoid possible if/else logic defects.
So modified the macro SET_VALID_IOCTL with do - while loop.
[hverkuil: checkpatch: add parenthesis around 'ops']
Signed-off-by: lijian <lijian@yulong.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
A use after free bug caused by the dangling pointer
filp->privitate_data in v4l2_fh_release.
See https://lore.kernel.org/patchwork/patch/1419058/.
My patch sets the dangling pointer to NULL to provide
robust.
Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The V4L2 async framework is generally used with the V4L2 fwnode, which
also depends on the former. There are a few exceptions but they are
relatively few.
At the same time there is a vast number of systems that need videodev
module, but have no use for v4l2-async that's now part of videodev.
In order to improve, split the v4l2-async into its own module. Selecting
V4L2_FWNODE also selects V4L2_ASYNC.
This also moves the initialisation of the debufs entries for async subdevs
to loading of the v4l2-async module. The directory is named as
"v4l2-async".
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The v4l2-ctrls.c source has become much too big, so split it up
into four separate parts:
v4l2-ctrls-core.c: contains the core framework code
v4l2-ctrls-api.c: contains the uAPI interface to the framework
v4l2-ctrls-defs.c: contains the control definitions
v4l2-ctrls-request.c: contains the Request API helpers
And it adds a new v4l2-ctrls-priv.h.
No code was changed, but a number of checkpatch.pl warnings were
fixed (alignment, f == NULL -> !f, long comment block coding style,
unsigned -> unsigned int).
The copyright statements were updated as well since they were
quite out of date.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
When v4l2_ctrl_request_complete() is called and there is no control
handler object found in the request, then create such an object so
that all controls at completion state can be stored and are available
to userspace.
Otherwise any attempt by userspace to read the completed request data
will fail.
If allocating the control handler object failed, then indicate that
by returning ENOMEM when attempting to get the controls from the
completed request instead of returning ENOENT.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Until now, the MPEG-2 V4L2 API was not exported as a public API,
and only defined in a private media header (media/mpeg2-ctrls.h).
After reviewing the MPEG-2 specification in detail, and reworking
the controls so they match the MPEG-2 semantics properly,
we can consider it ready.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The Hantro and Cedrus drivers work in frame-mode,
meaning they expect all the slices in a picture (either frame
or field structure) to be passed in each OUTPUT buffer.
These two are the only V4L2 MPEG-2 stateless decoders currently
supported. Given the VA-API drivers also work per-frame,
coalescing all the MPEG-2 slices in a buffer before the decoding
operation, it makes sense to not expect slice-mode drivers and
therefore remove V4L2_CID_MPEG_VIDEO_MPEG2_SLICE_PARAMS.
This is done to avoid carrying an unused interface. If needed,
this control can be added without breaking backwards compatibility.
Note that this would mean introducing a enumerator control to
specify the decoding mode (see V4L2_CID_STATELESS_H264_DECODE_MODE).
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Co-developed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Typically, bitstreams are composed of a sequence header,
followed by a number of picture header and picture coding extension
headers. Each picture can be composed of a number of slices.
Let's split the MPEG-2 uAPI to follow these semantics more closely,
allowing more usage flexibility. Having these controls split up
allows applications to set a sequence control at the beginning
of a sequence, and then set a picture control for each frame.
While here add padding fields where needed, and document
the uAPI header thoroughly.
Note that the V4L2_CTRL_TYPE_{} defines had to be moved because
it clashes with existing ones. This is not really an issue
since they will be re-defined when the controls are moved
out of staging.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Tested-by: Jonas Karlman <jonas@kwiboo.se>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Our current MPEG-2 uAPI uses 1-byte fields for MPEG-2
boolean syntax elements. Clean these by adding a 'flags'
field and flag macro for each boolean syntax element.
A follow-up change will refactor this uAPI so we don't need
to add padding fields just yet.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Tested-by: Jonas Karlman <jonas@kwiboo.se>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
As stated in the MPEG-2 specification, section 6.3.7 "Quant matrix
extension":
Each quantisation matrix has a default set of values. When a
sequence_header_code is decoded all matrices shall be reset to
their default values. User defined matrices may be downloaded
and this can occur in a sequence_header() or in a
quant_matrix_extension().
The load_intra_quantiser_matrix syntax elements are transmitted
in the bitstream headers, signalling that a quantisation matrix
needs to be loaded and used for pictures transmitted afterwards
(until the matrices are reset).
This "load" semantics are implemented in the V4L2 interface
without the need of any "load" flags: passing the control
is effectively a load.
Therefore, rework the V4L2_CID_MPEG_VIDEO_MPEG2_QUANTISATION
semantics to match the MPEG-2 semantics. Quantisation matrices
values are now initialized by the V4L2 control core to their
reset default value, and applications are expected to reset
their values as specified.
The quantisation control is therefore optional, and used to
load bitstream-defined values in the quantisation matrices.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Co-developed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The MPEG-2 specification refers to the quantisation matrices
using the word "quantisation". Make the V4L2 interface more
ergonomic by matching the MPEG-2 spec.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Tested-by: Jernej Skrabec <jernej.skrabec@siol.net>
Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net>
Tested-by: Daniel Almeida <daniel.almeida@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
- printk fourcc modifier support added %p4cc
core:
- drm_crtc_commit_wait
- atomic plane state helpers reworked for full state
- dma-buf heaps API rework
- edid: rework and improvements for displayid
dp-mst:
- better topology logging
bridge:
- Chipone ICN6211
- Lontium LT8912B
- anx7625 regulator support
panel:
- fix lt9611 4k panels handling
simple-kms:
- add plane state helpers
ttm:
- debugfs support
- removal of unused sysfs
- ignore signaled moved fences
- ioremap buffer according to mem caching
i915:
- Alderlake S enablement
- Conversion to dma_resv_locking
- Bring back watchdog timeout support
- legacy ioctl cleanups
- add GEM TDDO and RFC process
- DG1 LMEM preparation work
- intel_display.c refactoring
- Gen9/TGL PCH combination support
- eDP MSO Support
- multiple PSR instance support
- Link training debug updates
- Disable PSR2 support on JSL/EHL
- DDR5/LPDDR5 support for bw calcs
- LSPCON limited to gen9/10 platforms
- HSW/BDW async flip/VTd corruption workaround
= SAGV watermakr fixes
- SNB hard hang on ring resume fix
- Limit imported dma-buf size
- move to use new tasklet API
- refactor KBL/TGL/ADL-S display/gt steppings
- refactoring legacy DP/HDMI, FB plane code out
amdgpu:
- uapi: add ioctl to query video capabilities
- Iniital AMD Freesync HDMI support
- Initial Adebaran support
- 10bpc dithering improvements
- DCN secure display support
- Drop legacy IO BAR requirements
- PCIE/S0ix/RAS/Prime/Reset fixes
- Display ASSR support
- SMU gfx busy queues for RV/PCO
- Initial LTTPR display work
amdkfd:
- MMU notifier fixes
- APU fixes
radeon:
- debugfs cleanps
- fw error handling ifix
- Flexible array cleanups
msm:
- big DSI phy/pll cleanup
- sc7280 initial support
- commong bandwidth scaling path
- shrinker locking contention fixes
- unpin/swap support for GEM objcets
ast:
- cursor plane handling reworked
tegra:
- don't register DP AUX channels before connectors
zynqmp:
- fix OOB struct padding memset
gma500:
- drop ttm and medfield support
exynos:
- request_irq cleanup function
mediatek:
- fine tune line time for EOTp
- MT8192 dpi support
- atomic crtc config updates
- don't support HDMI connector creation
mxsdb:
- imx8mm support
panfrost:
-= MMU IRQ handling rework
qxl:
- locking fixes
- resource deallocation changes
sun4i:
- add alpha properties to UI/VI layers
vc4:
- RPi4 CEC support
vmwgfx:
- doc cleanups
arc:
- moved to drm/tiny
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Merge tag 'drm-next-2021-04-28' of git://anongit.freedesktop.org/drm/drm
Pull drm updates from Dave Airlie:
"The usual lots of work all over the place.
i915 has gotten some Alderlake work and prelim DG1 code, along with a
major locking rework over the GEM code, and brings back the property
of timing out long running jobs using a watchdog. amdgpu has some
Alderbran support (new GPU), freesync HDMI support along with a lot
other fixes.
Outside of the drm, there is a new printf specifier added which should
have all the correct acks/sobs:
- printk fourcc modifier support added %p4cc
Summary:
core:
- drm_crtc_commit_wait
- atomic plane state helpers reworked for full state
- dma-buf heaps API rework
- edid: rework and improvements for displayid
dp-mst:
- better topology logging
bridge:
- Chipone ICN6211
- Lontium LT8912B
- anx7625 regulator support
panel:
- fix lt9611 4k panels handling
simple-kms:
- add plane state helpers
ttm:
- debugfs support
- removal of unused sysfs
- ignore signaled moved fences
- ioremap buffer according to mem caching
i915:
- Alderlake S enablement
- Conversion to dma_resv_locking
- Bring back watchdog timeout support
- legacy ioctl cleanups
- add GEM TDDO and RFC process
- DG1 LMEM preparation work
- intel_display.c refactoring
- Gen9/TGL PCH combination support
- eDP MSO Support
- multiple PSR instance support
- Link training debug updates
- Disable PSR2 support on JSL/EHL
- DDR5/LPDDR5 support for bw calcs
- LSPCON limited to gen9/10 platforms
- HSW/BDW async flip/VTd corruption workaround
- SAGV watermark fixes
- SNB hard hang on ring resume fix
- Limit imported dma-buf size
- move to use new tasklet API
- refactor KBL/TGL/ADL-S display/gt steppings
- refactoring legacy DP/HDMI, FB plane code out
amdgpu:
- uapi: add ioctl to query video capabilities
- Iniital AMD Freesync HDMI support
- Initial Adebaran support
- 10bpc dithering improvements
- DCN secure display support
- Drop legacy IO BAR requirements
- PCIE/S0ix/RAS/Prime/Reset fixes
- Display ASSR support
- SMU gfx busy queues for RV/PCO
- Initial LTTPR display work
amdkfd:
- MMU notifier fixes
- APU fixes
radeon:
- debugfs cleanps
- fw error handling ifix
- Flexible array cleanups
msm:
- big DSI phy/pll cleanup
- sc7280 initial support
- commong bandwidth scaling path
- shrinker locking contention fixes
- unpin/swap support for GEM objcets
ast:
- cursor plane handling reworked
tegra:
- don't register DP AUX channels before connectors
zynqmp:
- fix OOB struct padding memset
gma500:
- drop ttm and medfield support
exynos:
- request_irq cleanup function
mediatek:
- fine tune line time for EOTp
- MT8192 dpi support
- atomic crtc config updates
- don't support HDMI connector creation
mxsdb:
- imx8mm support
panfrost:
- MMU IRQ handling rework
qxl:
- locking fixes
- resource deallocation changes
sun4i:
- add alpha properties to UI/VI layers
vc4:
- RPi4 CEC support
vmwgfx:
- doc cleanups
arc:
- moved to drm/tiny"
* tag 'drm-next-2021-04-28' of git://anongit.freedesktop.org/drm/drm: (1390 commits)
drm/ttm: Don't count pages in SG BOs against pages_limit
drm/ttm: fix return value check
drm/bridge: lt8912b: fix incorrect handling of of_* return values
drm: bridge: fix LONTIUM use of mipi_dsi_() functions
drm: bridge: fix ANX7625 use of mipi_dsi_() functions
drm/amdgpu: page retire over debugfs mechanism
drm/radeon: Fix a missing check bug in radeon_dp_mst_detect()
drm/amd/display: Fix the Wunused-function warning
drm/radeon/r600: Fix variables that are not used after assignment
drm/amdgpu/smu7: fix CAC setting on TOPAZ
drm/amd/display: Update DCN302 SR Exit Latency
drm/amdgpu: enable ras eeprom on aldebaran
drm/amdgpu: RAS harvest on driver load
drm/amdgpu: add ras aldebaran ras eeprom driver
drm/amd/pm: increase time out value when sending msg to SMU
drm/amdgpu: add DMUB outbox event IRQ source define/complete/debug flag
drm/amd/pm: add the callback to get vbios bootup values for vangogh
drm/radeon: Fix size overflow
drm/amdgpu: Fix size overflow
drm/amdgpu: move mmhub ras_func init to ip specific file
...
When controls are used together with the Request API, then for
each request a v4l2_ctrl_handler struct is allocated. This contains
the controls that can be set in a request. If a control is *not* set in
the request, then the value used in the most recent previous request
must be used, or the current value if it is not found in any outstanding
requests.
The framework tried to find such a previous request and it would set
the 'req' pointer in struct v4l2_ctrl_ref to the v4l2_ctrl_ref of the
control in such a previous request. So far, so good. However, when that
previous request was applied to the hardware, returned to userspace, and
then userspace would re-init or free that request, any 'ref' pointer in
still-queued requests would suddenly point to freed memory.
This was not noticed before since the drivers that use this expected
that each request would always have the controls set, so there was
never any need to find a control in older requests. This requirement
was relaxed, and now this bug surfaced.
It was also made worse by changeset
2fae4d6aab ("media: v4l2-ctrls: v4l2_ctrl_request_complete() should always set ref->req")
which increased the chance of this happening.
The use of the 'req' pointer in v4l2_ctrl_ref was very fragile, so
drop this entirely. Instead add a valid_p_req bool to indicate that
p_req contains a valid value for this control. And if it is false,
then just use the current value of the control.
Note that VIDIOC_G_EXT_CTRLS will always return -EACCES when attempting
to get a control from a request until the request is completed. And in
that case, all controls in the request will have the control value set
(i.e. valid_p_req is true). This means that the whole 'find the most
recent previous request containing a control' idea is pointless, and
the code can be simplified considerably.
The v4l2_g_ext_ctrls_common() function was refactored a bit to make
it more understandable. It also avoids updating volatile controls
in a completed request since that was already done when the request
was completed.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Fixes: 2fae4d6aab ("media: v4l2-ctrls: v4l2_ctrl_request_complete() should always set ref->req")
Fixes: 6fa6f831f0 ("media: v4l2-ctrls: add core request support")
Cc: <stable@vger.kernel.org> # for v5.9 and up
Tested-by: Alexandre Courbot <acourbot@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
When a request is re-inited it will release all control handler
objects that are still in the request. It does that by unbinding
and putting all those objects. When the object is unbound the
obj->req pointer is set to NULL, and the object's unbind op is
called. When the object it put the object's release op is called
to free the memory.
For a request object that contains a control handler that means
that v4l2_ctrl_handler_free() is called in the release op.
A control handler used in a request has a pointer to the main
control handler that is created by the driver and contains the
current state of all controls. If the device is unbound (due to
rmmod or a forced unbind), then that main handler is freed, again
by calling v4l2_ctrl_handler_free(), and any outstanding request
objects that refer to that main handler have to be unbound and put
as well.
It does that by this test:
if (!hdl->req_obj.req && !list_empty(&hdl->requests)) {
I.e. the handler has no pointer to a request, so is the main
handler, and one or more request objects refer to this main
handler.
However, this test is wrong since hdl->req_obj.req is actually
NULL when re-initing a request (the object unbind will set req to
NULL), and the only reason this seemingly worked is that the
requests list is typically empty since the request's unbind op
will remove the handler from the requests list.
But if another thread is at the same time adding a new control
to a request, then there is a race condition where one thread
is removing a control handler object from the requests list and
another thread is adding one. The result is that hdl->requests
is no longer empty and the code thinks that a main handler is
being freed instead of a control handler that is part of a request.
There are two bugs here: first the test for hdl->req_obj.req: this
should be hdl->req_obj.ops since only the main control handler will
have a NULL pointer there.
The second is that adding or deleting request objects from the
requests list of the main handler isn't protected by taking the
main handler's lock.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reported-by: John Cox <jc@kynesim.co.uk>
Fixes: 6fa6f831f0 ("media: v4l2-ctrls: add core request support")
Tested-by: John Cox <jc@kynesim.co.uk>
Reported-by: John Cox <jc@kynesim.co.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Add Colorimetry control class for colorimetry controls
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Long Term Reference (LTR) frames are the frames that are encoded
sometime in the past and stored in the DPB buffer list to be used
as reference to encode future frames.
This change adds controls to enable this feature.
Signed-off-by: Dikshita Agarwal <dikshita@codeaurora.org>
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Rename v4l2_async_register_subdev_sensor_common as
v4l2_async_register_subdev_sensor. This is a part of the effort to make
the long names present in V4L2 fwnode and async frameworks shorter.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Rename v4l2_async_notifier_parse_fwnode_sensor_common() as
v4l2_async_notifier_parse_fwnode_sensor() and make the function static, as
it's not used by a driver and maybe never will.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The message erroneously told that the pad wasn't found from a tuner
when in reality it wasn't found from a decoder.
Signed-off-by: Antti Keränen <detegr@rbx.email>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Add a name of the menu and fill control type.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The V4L2_CID_STATELESS_FWHT_PARAMS compound control was missing a
proper initialization of the flags field, so after loading the vicodec
module for the first time, running v4l2-compliance for the stateless
decoder would fail on this control because the initial control value
was considered invalid by the vicodec driver.
Initializing the flags field to sane values fixes this.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The timestamp uses microseconds, not nanoseconds, so use %06ld instead
of %09ld.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
These are optional in struct v4l2_jpeg_header, so skip DHT/DQT segment
parsing if huffman_tables/quantization_tables were not requested by user,
to save time.
However, do count them (num_dht/num_dqt).
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
In the case we get an invalid stream, such as from v4l2-compliance
streaming test, jpeg_next_marker will end up parsing the entire
stream. The standard describes the high level syntax of a jpeg
as starting with SOI, ending with EOI, so return error if the very
first 2 bytes are not SOI.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
According to Rec. ITU-T T.872 (06/2012) 6.5.3
APP14 segment is for color encoding, it contains a transform flag, which
may have values of 0, 1 and 2 and are interpreted as follows:
0 - CMYK for images that are encoded with four components
- RGB for images that are encoded with three components
1 - An image encoded with three components using YCbCr colour encoding.
2 - An image encoded with four components using YCCK colour encoding.
This is used in imx-jpeg decoder, to distinguish between
YUV444 and RGB24.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
The added format is V4L2_PIX_FMT_YUV24, this is a packed
YUV 4:4:4 format, with 8 bits for each component, 24 bits
per sample.
This format is used by the i.MX 8QuadMax and i.MX 8DualXPlus/8QuadXPlus
JPEG encoder/decoder.
Signed-off-by: Mirela Rabulea <mirela.rabulea@nxp.com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Until now, the VP8 V4L2 API was not exported as a public API,
and only defined in a private media header (media/vp8-ctrls.h).
The reason for this was a concern about the API not complete
and ready to support VP8 decoding hardware accelerators.
After reviewing the VP8 specification in detail, and now
that the API is able to support Cedrus and Hantro G1,
we can consider this ready.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Simply print the type of the control.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
It doesn't seem to add any clarity to have a "header" suffix in controls,
struct names and flags.
Since this just makes names too long without any benefit, just drop it.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Add a control to enable inserting of AUD NALU into encoded
bitstream.
Reviewed-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Make display delay and display delay enable MFC controls standard v4l
controls. This will allow reuse of the controls for other decoder
drivers. Also the new proposed controls are now codec agnostic because
they could be used for any codec.
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Add a flags argument to the v4l2_create_fwnode_links_to_pad() function
to specify the link flags. This allows drivers to create immutable links
for instance.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
