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All the davinci media drivers are using the i2c framework, and
fail to build if that is ever disabled, e.g.:
media/platform/davinci/vpif_display.c: In function 'vpif_probe':
media/platform/davinci/vpif_display.c:1298:14: error: implicit declaration of function 'i2c_get_adapter' [-Werror=implicit-function-declaration]
This adds explicit Kconfig dependencies so we don't see the
driver options if I2C is turned off.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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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>
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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>
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this patch makes use of helper function v4l2_get_timestamp()
to set the timestamp of vb2 buffer.
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>
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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>
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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>
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Embed video_device struct (video_dev) in channel_obj and also the
Unregister path doesn't need to free the video_device structure,
hence, change the video_device.release callback point to
video_device_release_empty.
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>
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Embed video_device struct (video_dev) in channel_obj and also the
Unregister path doesn't need to free the video_device structure,
hence, change the video_device.release callback point to
video_device_release_empty.
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>
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The davinci media drivers use videobuf2, which they enable through
a 'select' statement. If one of these drivers is built-in, but
the v4l2 core is a loadable modules, we end up with a link
error:
drivers/built-in.o: In function `vb2_fop_mmap':
:(.text+0x113e84): undefined reference to `video_devdata'
drivers/built-in.o: In function `vb2_ioctl_create_bufs':
:(.text+0x114710): undefined reference to `video_devdata'
drivers/built-in.o: In function `vb2_ioctl_reqbufs':
:(.text+0x114ed8): undefined reference to `video_devdata'
drivers/built-in.o: In function `vb2_ioctl_querybuf':
:(.text+0x115530): undefined reference to `video_devdata'
To solve this, we need to add a dependency on VIDEO_V4L2,
which enforces that the davinci drivers themselves can only
be loadable modules if V4L2 is not built-in, and they do
not cause the videobuf2 code to be built-in.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core update from Greg KH:
"Here's the set of driver core patches for 3.19-rc1.
They are dominated by the removal of the .owner field in platform
drivers. They touch a lot of files, but they are "simple" changes,
just removing a line in a structure.
Other than that, a few minor driver core and debugfs changes. There
are some ath9k patches coming in through this tree that have been
acked by the wireless maintainers as they relied on the debugfs
changes.
Everything has been in linux-next for a while"
* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
fs: debugfs: add forward declaration for struct device type
firmware class: Deletion of an unnecessary check before the function call "vunmap"
firmware loader: fix hung task warning dump
devcoredump: provide a one-way disable function
device: Add dev_<level>_once variants
ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
ath: use seq_file api for ath9k debugfs files
debugfs: add helper function to create device related seq_file
drivers/base: cacheinfo: remove noisy error boot message
Revert "core: platform: add warning if driver has no owner"
drivers: base: support cpu cache information interface to userspace via sysfs
drivers: base: add cpu_device_create to support per-cpu devices
topology: replace custom attribute macros with standard DEVICE_ATTR*
cpumask: factor out show_cpumap into separate helper function
driver core: Fix unbalanced device reference in drivers_probe
driver core: fix race with userland in device_add()
sysfs/kernfs: make read requests on pre-alloc files use the buffer.
sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
fs: sysfs: return EGBIG on write if offset is larger than file size
...
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This patch adds support in the capture driver for using
vb2_ops_wait_prepare/finish() helpers provided by the
vb2 core.
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>
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Querycap shouldn't set the version field (the core does that for you),
but it should set the device_caps field.
In addition, remove the CAPTURE and OUTPUT caps for M2M devices. These
were already slated for removal, so it's time to do so.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Kamil Debski <k.debski@samsung.com>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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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>
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we are getting struct clk using clk_get before calling
clk_prepare_enable. but if clk_prepare_enable fails, then we are
jumping to fail_mutex_unlock where we are just unlocking the mutex,
but we are not freeing the clock source.
this patch just adds a call to clk_put before jumping to
fail_mutex_unlock.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
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>
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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>
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this patch adds support for returning -ENODATA if the current
output doesn't support 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>
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this patch groups the v4l2_ioctl_ops.
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>
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started
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>
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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>
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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>
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this patch adds support for using vb2_ioctl_* helpers.
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>
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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>
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this patch teaches vpbe driver to use vb2_fop_mmap/poll helpers.
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>
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this patch improve vpbe_buffer_prepare() callback, as buf_prepare()
callback is never called with invalid state and check for
vb2_plane_vaddr(vb, 0) is dropped as payload check should
be done unconditionally.
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>
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this patch drops buf_cleanup() callback as this callback
is never called with buffer state active.
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>
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this patch makes use of vb2_ops_wait_prepare/finish helper functions.
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>
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this patch drops the buf_init() callback as init
of buf list is not required.
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>
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this patch moves the initialization of vb2 queue and the DMA
context to probe() and clean up in remove() callback respectively.
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>
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A platform_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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We don't need to check "ret", we know it's zero.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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make vpfe_standards[] static.
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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this patch removes unneeded dependency of ARCH_OMAP3
on VIDEO_DM6446_CCDC.
Also the top level platform Makefile descended into
davinci/ without any dependency so just drop the
dependency obj-y, as obj-$(CONFIG_ARCH_DAVINCI)
already exists.
Reported-by: Andreas Ruprecht <rupran@einserver.de>
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>
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It is possible to call STREAMON without having any buffers queued.
So vb2_is_streaming() can return true without start_streaming()
having been called. Only after at least one buffer has been
queued will start_streaming be called.
The check vb2_is_streaming() is incorrect as this would start
the DMA without having proper DMA pointers set up. this patch
uses vb2_start_streaming_called() instead to check is streaming
was called.
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>
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It is possible to call STREAMON without having any buffers queued.
So vb2_is_streaming() can return true without start_streaming()
having been called. Only after at least one buffer has been
queued will start_streaming be called.
The check vb2_is_streaming() is incorrect as this would start
the DMA without having proper DMA pointers set up. this patch
uses vb2_start_streaming_called() instead to check is streaming
was called.
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>
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this patch drops setting of vb2 buffer state to VB2_BUF_STATE_ACTIVE,
as any buffer queued to the driver is marked ACTIVE by the vb2 core.
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>
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this patch drops setting of vb2 buffer state to VB2_BUF_STATE_ACTIVE,
as any buffer queued to the driver is marked ACTIVE by the vb2 core.
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>
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When vpif is compiled as module, those errors happen:
ERROR: "vpif_lock" [drivers/media/platform/davinci/vpif_display.ko] undefined!
ERROR: "vpif_lock" [drivers/media/platform/davinci/vpif_capture.ko] undefined!
That's because vpif_lock symbol is not exported.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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Instead of allocating a var to store 0 and just return it,
change the code to return 0 directly.
Acked-by: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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vb2-dma-contig depends on HAS_DMA, but the Kbuild doesn't take
it into account at select.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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There are several arch-specific media drivers that don't
require asm-specific includes and can be successfully
compiled on x86. Add COMPILE_TEST dependency for them, in
order to allow a broader test on those drivers.
That helps static analysis tools like Coverity to discover
eventual troubles there.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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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>
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Shut up several warnings about invalid casting when printing
the values of two pointers.
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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drivers/media/platform/davinci/dm355_ccdc.c:463:5: warning: no previous prototy
pe for 'ccdc_write_dfc_entry' [-Wmissing-prototypes]
int ccdc_write_dfc_entry(int index, struct ccdc_vertical_dft *dfc)
^
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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drivers/media/platform/davinci/dm644x_ccdc.c:133:6: warning: no previous protot
ype for 'ccdc_setwin' [-Wmissing-prototypes]
void ccdc_setwin(struct v4l2_rect *image_win,
^
drivers/media/platform/davinci/dm644x_ccdc.c:373:6: warning: no previous protot
ype for 'ccdc_config_ycbcr' [-Wmissing-prototypes]
void ccdc_config_ycbcr(void)
^
drivers/media/platform/davinci/dm644x_ccdc.c:526:6: warning: no previous protot
ype for 'ccdc_config_raw' [-Wmissing-prototypes]
void ccdc_config_raw(void)
^
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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drivers/media/platform/davinci/vpif_capture.c: In function 'vpif_channel_isr':
drivers/media/platform/davinci/vpif_capture.c:376:18: warning: variable 'field'
set but not used [-Wunused-but-set-variable]
enum v4l2_field field;
^
drivers/media/platform/davinci/vpif_capture.c: In function 'vpif_calculate_offs
ets':
drivers/media/platform/davinci/vpif_capture.c:536:23: warning: variable 'vpitch
' set but not used [-Wunused-but-set-variable]
unsigned int hpitch, vpitch, sizeimage;
^
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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drivers/media/platform/davinci/vpif_display.c: In function 'vpif_channel_isr':
drivers/media/platform/davinci/vpif_display.c:363:18: warning: variable 'field'
set but not used [-Wunused-but-set-variable]
enum v4l2_field field;
^
drivers/media/platform/davinci/vpif_display.c: In function 'vpif_calculate_offs
ets':
drivers/media/platform/davinci/vpif_display.c:505:23: warning: variable 'vpitch
' set but not used [-Wunused-but-set-variable]
unsigned int hpitch, vpitch, sizeimage;
^
drivers/media/platform/davinci/vpif_display.c: In function 'vpif_set_output':
drivers/media/platform/davinci/vpif_display.c:816:27: warning: variable 'subdev
_info' set but not used [-Wunused-but-set-variable]
struct vpif_subdev_info *subdev_info = NULL;
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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* .: (268 commits)
Linux 3.16-rc6
um: segv: Save regs only in case of a kernel mode fault
um: Fix hung task in fix_range_common()
um: Ensure that a stub page cannot get unmapped
Revert "um: Fix wait_stub_done() error handling"
btrfs: test for valid bdev before kobj removal in btrfs_rm_device
Btrfs: fix abnormal long waiting in fsync
random: check for increase of entropy_count because of signed conversion
ARM: EXYNOS: Fix core ID used by platsmp and hotplug code
ahci: add support for the Promise FastTrak TX8660 SATA HBA (ahci mode)
ARM: at91/dt: add missing clocks property to pwm node in sam9x5.dtsi
ARM: at91/dt: fix usb0 clocks definition in sam9n12 dtsi
ARM: at91: at91sam9x5: correct typo error for ohci clock
irqchip: gic: Fix core ID calculation when topology is read from DT
GFS2: fs/gfs2/rgrp.c: kernel-doc warning fixes
GFS2: memcontrol: Spelling s/invlidate/invalidate/
GFS2: Allow caching of glocks for flock
GFS2: Allow flocks to use normal glock dq rather than dq_wait
GFS2: replace count*size kzalloc by kcalloc
GFS2: Use GFP_NOFS when allocating glocks
...
Conflicts:
drivers/media/dvb-frontends/si2168.c
drivers/media/dvb-frontends/si2168_priv.h
drivers/media/tuners/si2157.c
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This patch fixes following array out of bound warnings,
drivers/media/platform/davinci/vpif_display.c: In function 'vpif_remove':
drivers/media/platform/davinci/vpif_display.c:1389:36: warning: iteration
1u invokes undefined behavior [-Waggressive-loop-optimizations]
vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
^
drivers/media/platform/davinci/vpif_display.c:1385:2: note: containing loop
for (i = 0; i < VPIF_DISPLAY_MAX_DEVICES; i++) {
^
drivers/media/platform/davinci/vpif_capture.c: In function 'vpif_remove':
drivers/media/platform/davinci/vpif_capture.c:1581:36: warning: iteration
1u invokes undefined behavior [-Waggressive-loop-optimizations]
vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
^
drivers/media/platform/davinci/vpif_capture.c:1577:2: note: containing loop
for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
^
drivers/media/platform/davinci/vpif_capture.c:1580:23: warning: array subscript
is above array bounds [-Warray-bounds]
common = &ch->common[i];
Reported-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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The v4l2_pix_format structure has no reserved field. It is embedded in
the v4l2_framebuffer structure which has no reserved fields either, and
in the v4l2_format structure which has reserved fields that were not
previously required to be zeroed out by applications.
To allow extending v4l2_pix_format, inline it in the v4l2_framebuffer
structure, and use the priv field as a magic value to indicate that the
application has set all v4l2_pix_format extended fields and zeroed all
reserved fields following the v4l2_pix_format field in the v4l2_format
structure.
The availability of this API extension is reported to userspace through
the new V4L2_CAP_EXT_PIX_FORMAT capability flag. Just checking that the
priv field is still set to the magic value at [GS]_FMT return wouldn't
be enough, as older kernels don't zero the priv field on return.
To simplify the internal API towards drivers zero the extended fields
and set the priv field to the magic value for applications not aware of
the extensions.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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Since all the drivers that use `struct v4l2_fh' use the core
priority checking, the setting of the flag in the drivers can
be removed.
Signed-off-by: Ramakrishnan Muthukrishnan <ramakrmu@cisco.com>
Reviewed-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
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