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  1. 22 3月, 2013 1 次提交
  3. 06 2月, 2013 5 次提交
  5. 26 1月, 2013 1 次提交
  7. 04 1月, 2013 1 次提交
    • G
      Drivers: media: remove __dev* attributes. · 4c62e976
      由 Greg Kroah-Hartman 提交于 
      CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
__devinitconst, and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      4c62e976
  9. 21 12月, 2012 1 次提交
  11. 06 10月, 2012 1 次提交
  13. 16 8月, 2012 1 次提交
  15. 25 6月, 2012 3 次提交
  17. 19 6月, 2012 1 次提交
  19. 18 6月, 2012 1 次提交
    • S
      [media] s5p-fimc: Add missing static storage class specifiers · 7e566be2
      由 Sachin Kamat 提交于 
      Fixes the following sparse warnings:

drivers/media/video/s5p-fimc/fimc-lite-reg.c:218:6: warning: symbol
'flite_hw_set_out_order' was not declared. Should it be static?

drivers/media/video/s5p-fimc/fimc-mdevice.c:183:5: warning: symbol '__fimc_pipeline_shutdown' was not declared. Should it be static?
drivers/media/video/s5p-fimc/fimc-mdevice.c:1013:12: warning: symbol 'fimc_md_init' was not declared. Should it be static?
drivers/media/video/s5p-fimc/fimc-mdevice.c:1024:13: warning: symbol 'fimc_md_exit' was not declared. Should it be static?

drivers/media/video/s5p-fimc/fimc-core.c:466:5: warning: symbol 'fimc_set_color_effect' was not declared. Should it be static?

drivers/media/video/s5p-fimc/fimc-capture.c:1163:5: warning: symbol 'enclosed_rectangle' was not declared. Should it be static?
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
      7e566be2
  21. 20 5月, 2012 8 次提交
  23. 14 5月, 2012 1 次提交
    • H
      [media] v4l2-dev: add flag to have the core lock all file operations · 5126f259
      由 Hans Verkuil 提交于 
      This used to be the default if the lock pointer was set, but now that lock is by
default only used for ioctl serialization. Those drivers that already used
core locking have this flag set explicitly, except for some drivers where
it was obvious that there was no need to serialize any file operations other
than ioctl.

The drivers that didn't need this flag were:

drivers/media/radio/dsbr100.c
drivers/media/radio/radio-isa.c
drivers/media/radio/radio-keene.c
drivers/media/radio/radio-miropcm20.c
drivers/media/radio/radio-mr800.c
drivers/media/radio/radio-tea5764.c
drivers/media/radio/radio-timb.c
drivers/media/video/vivi.c
sound/i2c/other/tea575x-tuner.c

The other drivers that use core locking and where it was not immediately
obvious that this flag wasn't needed were changed so that the flag is set
together with a comment that that driver needs work to avoid having to
set that flag. This will often involve taking the core lock in the fops
themselves.

Eventually this flag should go and it should not be used in new drivers.

There are a few reasons why we want to avoid core locking of non-ioctl
fops: in the case of mmap this can lead to a deadlock in rare situations
since when mmap is called the mmap_sem is held and it is possible for
other parts of the code to take that lock as well (copy_from_user()/copy_to_user()
perform a down_read(&mm->mmap_sem) when a page fault occurs).

It is very unlikely that that happens since the core lock serializes all
fops, but the kernel warns about it if lock validation is turned on.

For poll it is also undesirable to take the core lock as that can introduce
increased latency. The same is true for read/write.

While it was possible to make flags or something to turn on/off taking the
core lock for each file operation, in practice it is much simpler to just
not take it at all except for ioctl and leave it to the driver to take the
lock. There are only a handful fops compared to the zillion ioctls we have.

I also wanted to make it obvious which drivers still take the lock for all
fops, so that's why I chose to have drivers set it explicitly.
Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
      5126f259
  25. 08 5月, 2012 1 次提交
  27. 11 4月, 2012 4 次提交
  29. 08 3月, 2012 2 次提交
  31. 18 1月, 2012 1 次提交
  33. 06 1月, 2012 1 次提交
  35. 31 12月, 2011 1 次提交
    • S
      [media] s5p-fimc: Add support for alpha component configuration · dafb9c70
      由 Sylwester Nawrocki 提交于 
      On Exynos SoCs the FIMC IP allows to configure globally the alpha
component of all pixels for V4L2_PIX_FMT_RGB32, V4L2_PIX_FMT_RGB555
and V4L2_PIX_FMT_RGB444 image formats. This patch adds a v4l2 control
in order to let the applications control the alpha component value.

The alpha value range depends on the pixel format, for RGB32 it's
0..255 (8-bits), for RGB555 - 0..1 (1-bit) and for RGB444 - 0..15
(4-bits). The v4l2 control range is always 0..255 and the alpha
component data width is determined by currently set format on the
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE buffer queue. The applications
need to match the alpha channel value range and the pixel format
since the driver will clamp the alpha component. Depending on
fourcc the valid alpha bits are:

 - V4L2_PIX_FMT_RGB555  [0]
 - V4L2_PIX_FMT_RGB444  [3:0]
 - V4L2_PIX_FMT_RGB32   [7:0]

When switching to a pixel format with smaller alpha component width
the currently set alpha value will be clamped to maximum value valid
for current format. When switching to a format with wider alpha the
alpha value remains unchanged.

The variant description data structure is extended with a new entry
so an additional control is created only where really supported by
the hardware.

V4L2_PIX_FMT_RGB555 and V4L2_PIX_FMT_RGB444 formats are only valid
for V4L2_BUF_TYPE_VIDEO_CAPTURE buffer queue.
Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
      dafb9c70
  37. 25 11月, 2011 4 次提交
  39. 04 11月, 2011 1 次提交