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Darron Broad 59b1842da1 V4L/DVB (9227): MFE: Add multi-frontend mutual exclusion 
This add frontend R/W mutual exclusion.
Prior to this point in time it was possible to open both
frontends simultaneously which an MFE card cannot support.

In order to stop this, a delayed open is performed which
has the following function:

-  Return EBUSY after a configurable amount of time
   if a frontend is unavailable due to the other being
   in use.

-  Only allow opening of a frontend if the kernel thread
   of the other has stopped.

This solution was chosen to allow switching between
frontends to work as seamlessly as possible. When both
frontends are actually opened simultaneously then one
will only open, but if quick switching is performed
between one of many then the new open will succeed in
a clean fashion rather than interrupting a kernel
thread.

Signed-off-by: Darron Broad <darron@kewl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2008-10-17 17:24:15 -03:00
..
cs53l32a.h V4L/DVB (3599): Implement new routing commands for wm8775 and cs53l32a. 2006-03-24 16:27:00 -03:00
cs5345.h V4L/DVB (6869): cs5345: new i2c driver 2008-01-25 19:04:08 -02:00
cx2341x.h V4L/DVB (8105): cx2341x: add TS capability 2008-07-20 07:11:55 -03:00
cx25840.h V4L/DVB (8007): cx18/cx25840: the S-Video LUMA input can use all In1-In8 inputs 2008-06-26 15:58:42 -03:00
i2c-addr.h V4L/DVB (3548): Renamed I2C_foo addresses to I2C_ADDR_foo 2006-03-24 16:26:51 -03:00
ir-common.h V4L/DVB (9168): Add support for MSI TV@nywhere Plus remote 2008-10-13 09:57:34 -02:00
ir-kbd-i2c.h V4L/DVB (8395): saa7134: Fix Kbuild dependency of ir-kbd-i2c 2008-07-20 07:29:03 -03:00
m52790.h V4L/DVB (6486): m52790: add new Mitsubishi A/V switch i2c driver 2008-01-25 19:01:46 -02:00
msp3400.h V4L/DVB (3702): Make msp3400 routing defines more consistent 2006-04-02 04:56:11 -03:00
ovcamchip.h i2c: Cleanup the includes of <linux/i2c.h> 2007-05-01 23:26:29 +02:00
pwc-ioctl.h v4l-dvb: remove legacy checks to allow support for kernels < 2.6.10 2008-07-20 07:17:52 -03:00
rds.h include/media/: Spelling fixes 2008-02-03 17:19:47 +02:00
saa6752hs.h
saa7115.h V4L/DVB (8940): saa7115: fix saa7111(a) support 2008-10-12 09:37:00 -02:00
saa7127.h V4L/DVB (3608): Implement new routing commands in saa7127.c 2006-04-02 04:54:56 -03:00
saa7146.h include: replace __FUNCTION__ with __func__ 2008-10-16 11:21:30 -07:00
saa7146_vv.h V4L/DVB (8430): videodev: move some functions from v4l2-dev.h to v4l2-common.h or v4l2-ioctl.h 2008-07-23 19:00:17 -03:00
sh_mobile_ceu.h V4L/DVB (8687): soc-camera: Move .power and .reset from soc_camera host to sensor driver 2008-10-12 09:36:50 -02:00
soc_camera.h V4L/DVB (8687): soc-camera: Move .power and .reset from soc_camera host to sensor driver 2008-10-12 09:36:50 -02:00
soc_camera_platform.h V4L/DVB (8343): soc_camera_platform: Add SoC Camera Platform driver 2008-07-20 07:25:49 -03:00
tuner-types.h V4L/DVB (7352): tuner-simple: enable digital tuning support for Philips FMD1216ME 2008-04-24 14:07:50 -03:00
tuner.h V4L/DVB (9049): convert tuner drivers to use dvb_frontend->callback 2008-10-12 09:37:09 -02:00
tvaudio.h V4L/DVB (3577): Cleanup audio input handling 2006-03-24 16:26:56 -03:00
tveeprom.h V4L/DVB (8479): tveeprom/ivtv: fix usage of has_ir field 2008-07-26 12:54:42 -03:00
tvp5150.h V4L/DVB (3712): Fix video input setting of em28xx, use _INT_S_VIDEO_ROUTING in tvp5150 2006-06-25 01:57:38 -03:00
upd64031a.h V4L/DVB (3666): Remove trailing newlines 2006-04-02 04:55:52 -03:00
upd64083.h V4L/DVB (3666): Remove trailing newlines 2006-04-02 04:55:52 -03:00
v4l2-chip-ident.h V4L/DVB (8683): Add Micron mt9m111 chip ID in V4L2 identifiers 2008-10-12 09:36:50 -02:00
v4l2-common.h V4L/DVB (8940): saa7115: fix saa7111(a) support 2008-10-12 09:37:00 -02:00
v4l2-dev.h V4L/DVB (9133): v4l: disconnect kernel number from minor 2008-10-12 09:37:16 -02:00
v4l2-i2c-drv-legacy.h V4L/DVB (9209): v4l2: add comment to the v4l2-i2c-drv headers. 2008-10-17 17:20:20 -03:00
v4l2-i2c-drv.h V4L/DVB (9209): v4l2: add comment to the v4l2-i2c-drv headers. 2008-10-17 17:20:20 -03:00
v4l2-int-device.h V4L/DVB (6580): Set slave's master before master's attach call. 2008-01-25 19:02:06 -02:00
v4l2-ioctl.h V4L/DVB (9160): v4l: remove vidioc_enum_fmt_vbi_cap 2008-10-13 09:07:55 -02:00
videobuf-core.h Fix a deadlock in the bttv driver 2008-05-20 10:12:26 -07:00
videobuf-dma-contig.h V4L/DVB (8341): videobuf: Add physically contiguous queue code V3 2008-07-20 07:25:37 -03:00
videobuf-dma-sg.h V4L/DVB (8340): videobuf: Fix gather spelling 2008-07-20 07:25:32 -03:00
videobuf-dvb.h V4L/DVB (9227): MFE: Add multi-frontend mutual exclusion 2008-10-17 17:24:15 -03:00
videobuf-vmalloc.h V4L/DVB (8340): videobuf: Fix gather spelling 2008-07-20 07:25:32 -03:00
wm8775.h V4L/DVB (3599): Implement new routing commands for wm8775 and cs53l32a. 2006-03-24 16:27:00 -03:00