linux/drivers/media/Kconfig
Arnd Bergmann 0edf2e5e2b [media] v4l: kill the BKL
All of the hard problems for BKL removal appear to be solved in the
v4l-dvb/master tree. This removes the BKL from the various open
functions that do not need it, or only use it to protect an
open count.

The zoran driver is nontrivial in this regard, so I introduce
a new mutex that locks both the open/release and the ioctl
functions. Someone with access to the hardware can probably
improve that by using the existing lock in all cases.

Finally, all drivers that still use the locked version of the
ioctl function now get called under a new mutex instead of
the BKL.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-11-08 22:35:57 -02:00

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#
# Multimedia device configuration
#
menuconfig MEDIA_SUPPORT
tristate "Multimedia support"
depends on HAS_IOMEM
help
If you want to use Video for Linux, DVB for Linux, or DAB adapters,
enable this option and other options below.
if MEDIA_SUPPORT
comment "Multimedia core support"
#
# V4L core and enabled API's
#
config VIDEO_DEV
tristate "Video For Linux"
---help---
V4L core support for video capture and overlay devices, webcams and
AM/FM radio cards.
This kernel includes support for the new Video for Linux Two API,
(V4L2).
Additional info and docs are available on the web at
<http://linuxtv.org>
Documentation for V4L2 is also available on the web at
<http://bytesex.org/v4l/>.
To compile this driver as a module, choose M here: the
module will be called videodev.
config VIDEO_V4L2_COMMON
tristate
depends on (I2C || I2C=n) && VIDEO_DEV
default (I2C || I2C=n) && VIDEO_DEV
config VIDEO_ALLOW_V4L1
bool "Enable Video For Linux API 1 (DEPRECATED)"
depends on VIDEO_DEV && VIDEO_V4L2_COMMON
default VIDEO_DEV && VIDEO_V4L2_COMMON
---help---
Enables drivers based on the legacy V4L1 API.
This api were developed to be used at Kernel 2.2 and 2.4, but
lacks support for several video standards. There are several
drivers at kernel that still depends on it.
If you are unsure as to whether this is required, answer Y.
config VIDEO_V4L1_COMPAT
bool "Enable Video For Linux API 1 compatible Layer" if !VIDEO_ALLOW_V4L1
depends on VIDEO_DEV
default y
---help---
Enables a compatibility API used by most V4L2 devices to allow
its usage with legacy applications that supports only V4L1 api.
Documentation for the original API is included in the file
<Documentation/video4linux/API.html>.
User tools for this are available from
<ftp://ftp.uk.linux.org/pub/linux/video4linux/>.
If you are unsure as to whether this is required, answer Y.
#
# DVB Core
#
config DVB_CORE
tristate "DVB for Linux"
depends on NET && INET
select CRC32
help
DVB core utility functions for device handling, software fallbacks etc.
Enable this if you own a DVB/ATSC adapter and want to use it or if
you compile Linux for a digital SetTopBox.
Say Y when you have a DVB or an ATSC card and want to use it.
API specs and user tools are available from <http://www.linuxtv.org/>.
Please report problems regarding this support to the LinuxDVB
mailing list.
If unsure say N.
config VIDEO_MEDIA
tristate
default (DVB_CORE && (VIDEO_DEV = n)) || (VIDEO_DEV && (DVB_CORE = n)) || (DVB_CORE && VIDEO_DEV)
comment "Multimedia drivers"
source "drivers/media/common/Kconfig"
source "drivers/media/IR/Kconfig"
#
# Tuner drivers for DVB and V4L
#
source "drivers/media/common/tuners/Kconfig"
#
# Video/Radio/Hybrid adapters
#
source "drivers/media/video/Kconfig"
source "drivers/media/radio/Kconfig"
#
# DVB adapters
#
source "drivers/media/dvb/Kconfig"
config DAB
boolean "DAB adapters"
---help---
Allow selecting support for Digital Audio Broadcasting (DAB)
Receiver adapters.
if DAB
config USB_DABUSB
tristate "DABUSB driver"
depends on USB
---help---
A Digital Audio Broadcasting (DAB) Receiver for USB and Linux
brought to you by the DAB-Team
<http://wwwbode.cs.tum.edu/Par/arch/dab/>. This driver can be taken
as an example for URB-based bulk, control, and isochronous
transactions. URB's are explained in
<Documentation/usb/URB.txt>.
To compile this driver as a module, choose M here: the
module will be called dabusb.
endif # DAB
endif # MEDIA_SUPPORT