- 08 Jul, 2016 40 commits
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Antti Palosaari authored
Move statistics polling to read_status() in order to avoid use of kernel work. Also replace home made sign extension used for statistics with kernel sign_extend32(). Signed-off-by:
Antti Palosaari <crope@iki.fi> Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@s-opensource.com>
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Antti Palosaari authored
Disable runtime unbind as driver does not support it. Signed-off-by:
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Antti Palosaari authored
Disable runtime unbind as driver does not support it. Signed-off-by:
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Antti Palosaari authored
Disable runtime unbind as driver does not support it. Signed-off-by:
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Antti Palosaari authored
Move statistics polling to read_status() in order to avoid use of kernel work. Signed-off-by:
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Antti Palosaari authored
* remove some unneeded variable initialization * rename variables * use min() macro to calc max i2c xfer len * change bad firmware error code from EFAULT to EINVAL Signed-off-by:
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Antti Palosaari authored
There was some calculations where was kHz used in order to keep calculation withing 32-bit. Convert all to Hz and use 64-bit division helpers where needed. Signed-off-by:
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Antti Palosaari authored
Simplify TS clock divider calculation and programming slightly. Signed-off-by:
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Antti Palosaari authored
DiSEqC message sending takes 13.5 ms per byte, which is 54 ms total when typical 4 byte message is sent. Don't hard-code time limit to 54 ms, but calculate it. Time limit is only used to determine when to start poll "DiSEqC Tx ready" status from the chip. Signed-off-by:
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Antti Palosaari authored
No need to clear negative msb bits as those were dropped in any case when data is written to register. Signed-off-by:
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Antti Palosaari authored
Disable runtime unbind as driver does not support it. Signed-off-by:
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Antti Palosaari authored
Disable runtime unbind as driver does not support it. Signed-off-by:
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Antti Palosaari authored
Si2168-B40 firmware API has changed somewhere between 4.0-11 and 4.0-19 so that sleep will lose firmware upgrade from the chip. Due to that firmware re-upload is needed when newer firmwares are used. Rewrote firmware handling logic partly at the same. Signed-off-by:
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Hans Verkuil authored
Fix sparse warnings: tw686x-video.c:148:29: warning: symbol 'memcpy_dma_ops' was not declared. Should it be static? tw686x-video.c:195:29: warning: symbol 'contig_dma_ops' was not declared. Should it be static? tw686x-video.c:361:29: warning: symbol 'sg_dma_ops' was not declared. Should it be static? Signed-off-by:
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Dragos Bogdan authored
The part can be reset by a low pulse on the RESET pin (i.e. a hardware reset) with a minimum width of 5 ms. It is recommended to wait 5 ms after the low pulse before an I2C write is performed to the part. For safety reasons, the delays will be between 5 and 10 ms. The RESET pin can be tied high, so the GPIO is optional. Signed-off-by:
Dragos Bogdan <dragos.bogdan@analog.com> Reviewed-by:
Lars-Peter Clausen <lars@metafoo.de> Acked-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Amitoj Kaur Chawla authored
vzalloc combines vmalloc and memset 0. The Coccinelle semantic patch used to make this change is as follows: @@ type T; T *d; expression e; statement S; @@ d = - vmalloc + vzalloc (...); if (!d) S - memset(d, 0, sizeof(T)); Signed-off-by:Amitoj Kaur Chawla <amitoj1606@gmail.com> Signed-off-by:
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Arnd Bergmann authored
The dvb demuxer code uses a 'struct timespec' to pass a timeout as absolute time. This will cause problems on 32-bit architectures in 2038 when time_t overflows, and it is racy with a concurrent settimeofday() call. This patch changes the code to use ktime_get() instead, using the monotonic time base to avoid both the race and the overflow. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Alexander Shiyan authored
Commit 39b4da71 ("reset: use ENOTSUPP instead of ENOSYS") changed return value for reset controller if it missing. This patch changes the CODA driver to handle this value. Signed-off-by:
Alexander Shiyan <shc_work@mail.ru> Signed-off-by:
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Guennadi Liakhovetski authored
A copy paste error created that format with the same one-line description as Y8I and Y12I, whereas Z16 is quite different from them both. Signed-off-by:
Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by:
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Ricardo Ribalda authored
The comment was referencing the wrong function. Signed-off-by:
Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Acked-by:
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Ricardo Ribalda authored
After all the code refactoring, vb2_internal_qbuf is only called by vb2_qbuf. Since the function it is very simple, there is no need to have two functions. Signed-off-by:
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Ricardo Ribalda authored
After all the code refactoring, vb2_internal_dqbuf is only called by vb2_dqbuf. Since the function it is very simple, there is no need to have two functions. Signed-off-by:
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Ricardo Ribalda authored
According to the doc, V4L2_BUF_FLAG_DONE is cleared after DQBUF: V4L2_BUF_FLAG_DONE 0x00000004 ... After calling the VIDIOC_QBUF or VIDIOC_DQBUF it is always cleared ... Unfortunately, it seems that videobuf2 keeps it set after DQBUF. This can be tested with vivid and dev_debug: [257604.338082] video1: VIDIOC_DQBUF: 71:33:25.00260479 index=3, type=vid-cap, flags=0x00002004, field=none, sequence=163, memory=userptr, bytesused=460800, offset/userptr=0x344b000, length=460800 This patch forces FLAG_DONE to 0 after calling DQBUF. Reported-by:
Dimitrios Katsaros <patcherwork@gmail.com> Signed-off-by:
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Hans Verkuil authored
Don't fill in the format description. This is now done in the V4L2 core to ensure consistent descriptions. Signed-off-by:
Nick Dyer <nick.dyer@itdev.co.uk> Signed-off-by:
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Lubomir Rintel authored
Patrick Keshishian improved the explanation of the protocol when porting the driver to OpenBSD. Given it's a reverse engineering one and there's no documetnation it might be helpful to whoever hacks on the driver. Signed-off-by:
Patrick Keshishian <sidster@boxsoft.com> Signed-off-by:
Lubomir Rintel <lkundrak@v3.sk> Signed-off-by:
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Lubomir Rintel authored
OpenBSD would like to reuse some code but consider the licensing not clear enough. Let's clarify it a bit so that it suits their conventions: 1.) Keep the "extra text" away from the copyright statement and the rights grant. 2.) Add the warranty disclaimer -- it should not be legally required, nevertheless the clause 1. of the rights grant refest to it. Signed-off-by:
Federico Simoncelli <fsimonce@redhat.com> Signed-off-by:
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Florian Echtler authored
Closing the V4L2 device sometimes triggers a kernel oops. Present patch fixes this. Signed-off-by:
Martin Kaltenbrunner <modin@yuri.at> Signed-off-by:
Florian Echtler <floe@butterbrot.org> Signed-off-by:
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Florian Echtler authored
The framerate sometimes drops below 60 Hz if the poll interval is too high. Lowering it to the minimum of 1 ms fixes this. Signed-off-by:
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Javier Martinez Canillas authored
The DMA buffer importing streaming I/O section mentions the memory type value that has to be set when calling the VIDIOC_REQBUFS ioctl but this isn't mentioned in neither the Memory Mapping nor User Pointer sections. A user can know the values by looking at the examples but it's better to explicitly mention in the documentation, and also makes all sections about streaming I/O methods more consistent. Signed-off-by:
Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by:
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Javier Martinez Canillas authored
Commit 4b9c1cb6 ("[media] Documentation: media: description of DMABUF importing in V4L2") documented the V4L2 dma-buf importing support but did not update the VIDIOC_REQBUFS description, so only the Memory Mapping and User Pointer I/O methods are mentioned. Signed-off-by:
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Amitoj Kaur Chawla authored
Replace if condition and BUG() with a BUG_ON having the conditional expression of the if statement as argument. The Coccinelle semantic patch used to make this change is as follows: @@ expression E,f; @@ ( if (<+... f(...) ...+>) { BUG(); } | - if (E) { BUG(); } + BUG_ON(E); ) Signed-off-by: -
Alexey Khoroshilov authored
It is responsibility of a caller of fops->open(), to make sure an owner of the fops is available until file is closed. So, there is no need to lock THIS_MODULE explicitly. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by:
Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by:
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Hans Verkuil authored
When the rc_map table is created the char pointer of the name of the keymap is copied to the rc_map->name field. However, this pointer points to memory from the keymap module itself. Since these keymap modules are not refcounted, that means anyone can call rmmod to unload that module. Which is not a big deal because the contents of the map is all copied to rc_map, except for the keymap name. So after a keymap module is unloaded the name pointer has become stale. Unloading the rc-core module will now cause a kernel oops in rc_dev_uevent(). The solution is to kstrdup the name so there are no more references to the keymap module remaining. Signed-off-by:
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Hans Verkuil authored
The V4L2_DV_RGB_RANGE_* settings are, as the name says, for RGB formats only. So they should be ignored for non-RGB formats. Signed-off-by:
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Hans Verkuil authored
Allow VIDEO_MEDIATEK_VCODEC to build when COMPILE_TEST is set (even without MTK_IOMMU). Signed-off-by:
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Hans Verkuil authored
The patch dropping the vb2_dma_contig_init_ctx() and _cleanup_ctx() functions was already applied before this driver was added. So convert this driver as well. Signed-off-by:
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Arnd Bergmann authored
When CONFIG_INPUT is disabled, multiple gspca backend drivers print compile-time warnings about unused variables: media/usb/gspca/cpia1.c: In function 'sd_stopN': media/usb/gspca/cpia1.c:1627:13: error: unused variable 'sd' [-Werror=unused-variable] media/usb/gspca/konica.c: In function 'sd_stopN': media/usb/gspca/konica.c:246:13: error: unused variable 'sd' [-Werror=unused-variable] This annotates the variables as __maybe_unused, to let the compiler know that they are declared intentionally. Fixes: ee186fd9 ("[media] gscpa_t613: Add support for the camera button") Fixes: c2f644ae ("[media] gspca_cpia1: Add support for button") Fixes: b517af72 ("V4L/DVB: gspca_konica: New gspca subdriver for konica chipset using cams") Signed-off-by:
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Oliver Neukum authored
Allow for SS+ devices Signed-off-by:
Oliver Neukum <ONeukum@suse.com> Signed-off-by:
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Hans Verkuil authored
Hans de Goede has no more time to work on those, so I'll take over. For gspca/pwc I'll do 'Odd Fixes', for radio-shark I'll be a full maintainer. Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
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Bhaktipriya Shridhar authored
The workqueue "workqueue" is involved in transmitting hdpvr buffers. It has a single work item(&dev->worker) and hence doesn't require ordering. Also, it is not being used on a memory reclaim path. Hence, the singlethreaded workqueue has been replaced with the use of system_wq. System workqueues have been able to handle high level of concurrency for a long time now and hence it's not required to have a singlethreaded workqueue just to gain concurrency. Unlike a dedicated per-cpu workqueue created with create_singlethread_workqueue(), system_wq allows multiple work items to overlap executions even on the same CPU; however, a per-cpu workqueue doesn't have any CPU locality or global ordering guarantee unless the target CPU is explicitly specified and thus the increase of local concurrency shouldn't make any difference. Work item has been flushed in hdpvr_device_release() to ensure that there are no pending tasks while disconnecting the driver. Signed-off-by:
Bhaktipriya Shridhar <bhaktipriya96@gmail.com> Acked-by:
Tejun Heo <tj@kernel.org> Signed-off-by:
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