Commit Graph

318 Commits

Author SHA1 Message Date
Trent Piepho 6bdcc6e6db V4L/DVB (5363): Dvb: Remove lgh06xf driver
The code of the dvb-pll driver and the lgh06xf driver is nearly
identical.  The main difference is that the lgh06xf driver would set the
AGC TOP value on every tune call.  The dvb-pll driver now has the ability
to set the AGC TOP when the front-end device is opened, which is a better
way to go about it.  By using this ability of dvb-pll, the lgh06xf driver
is made unnecessary.

There is one other difference.  dvb-pll will probe for the presence of an
I2C pll chip by doing a one byte read, the lgh06xf driver did not do
this.  In some devices the PLL is not reachable over I2C at the timer the
tuner is attached.  Some more initialization, such as firmware loading,
must take place first.  None of the devices using a LG-H06xF should have
this problem.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:05 -03:00
Markus Rechberger ced80c67cd V4L/DVB (5299): Added support for loading cx88-dvb and cx88-blackbird
Added support for loading cx88-dvb and cx88-blackbird

Signed-off-by: Markus Rechberger <mrechberger@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:43:26 -03:00
Markus Rechberger 77b7477467 V4L/DVB (5298): Added support for deferred module requesting to cx88
added support for deferred module requesting to cx88

Signed-off-by: Markus Rechberger <mrechberger@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:43:25 -03:00
Michael Krufky af70dbd334 V4L/DVB (5260): Cx88-blackbird: allow usage of both 376836 and 262144 sized firmware images
This updates the cx88-blackbird driver to be able to use the new cx23416
firmware image released by Hauppauge Computer Works, while retaining
compatibility with the older firmware images.
cx2341x firmware can be downloaded at: http://dl.ivtvdriver.org/ivtv/firmware/

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-03-03 10:14:36 -02:00
Hans Verkuil f3d092b84a V4L/DVB (5304): Improve chip matching in v4l2_register
The chip matching in struct v4l2_register for VIDIOC_DBG_G/S_REGISTER 
was rather primitive. It could not be extended to other busses besides 
i2c and it lacked a way to.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-03-01 13:09:44 -02:00
Adrian Bunk db406b5855 V4L/DVB (5199): Cx88-video.c: remove struct radionorms
This patch removes the unused struct radionorms.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:35:17 -02:00
Trent Piepho 05ad390724 V4L/DVB (5166): Remove obsolete alias defines of CONFIG_* settings
The out of tree v4l-dvb build system didn't always override the kernel's
configuration settings with v4l-dvb's settings correctly.  To work around
this, makefiles would define some new macro based on the setting of a
config variable.  e.g. the pwc Makefile would define CONFIG_PWC_DEBUG if
CONFIG_USB_PWC_DEBUG (which is defined via Kconfig) was set.
The v4l-dvb build system should now always override correctly, and this
is no longer necessary.  This patch gets ride of these extra defines and
just uses the CONFIG_* settings directly.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:35:11 -02:00
Trent Piepho 52ebc763d8 V4L/DVB (5146): Make VIDIOC_INT_[SG]_REGISTER ioctls no longer internal only
The direct register access ioctls were defined as kernel internal only,
but they are very useful for debugging hardware from userspace and are
used as such.  Officially export them.

VIDIOC_INT_[SG]_REGISTER is renamed to VIDIOC_DBG_[SG]_REGISTER 
Definition of ioctl and struct v4l2_register is moved from v4l2-common.h 
to videodev2.h.

Types used in struct v4l2_register are changed to the userspace 
exportable versions (u32 -> __u32, etc). 

Use of VIDIOC_DBG_S_REGISTER requires CAP_SYS_ADMIN permission, so move 
the check into the video_ioctl2() dispatcher so it doesn't need to be 
duplicated in each driver's call-back function. CAP_SYS_ADMIN check is 
added to pvrusb2 (which doesn't use video_ioctl2).

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:55 -02:00
Trent Piepho dbbff48f39 V4L/DVB (5144): Restore VIDIOC_INT_[SG]_REGISTER calls
Add support for these ioctls to the video_ioctl2 system and the cx88
driver.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:54 -02:00
Heiko Baums 05eda24968 V4L/DVB (5114): Cx88: Add support for svideo/composite input of the Terratec Cinergy 1400 DVB-T
Adds support for the combined S-Video/Composite input of the
Terratec Cinergy 1400 DVB-T.

Signed-off-by: Heiko Baums <heiko@baums-on-web.de>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:47 -02:00
Mauro Carvalho Chehab a4b662f736 V4L/DVB (5110): Keep the previous tvnorm default for cx88 and cx88-blackbird
The video_ioctl2 conversion replaced the default from NTSC to PAL_BG.
This broke cx88-blackbird. Probably, there are some badness at this
driver, not doing all required stuff to change video standard.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:46 -02:00
Mauro Carvalho Chehab b3c4ee7016 V4L/DVB (5109): Convert cx88-blackbird to use video_ioctl2
This patch finishes cx88-blackbird conversion to use video_ioctl2. Video
standards are generated automatically inside videodev.c. the big ioctl
parser is removed, using, instead, video_ioctl2.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:46 -02:00
Mauro Carvalho Chehab 7730bef9c5 V4L/DVB (5108): Remove_cx88_ioctl
cx88_ioctl were merged at the master ioctl handler on cx88-blackbird

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:46 -02:00
Mauro Carvalho Chehab 84f1b6783a V4L/DVB (5107): Use cx88_set_freq() on cx88-blackbird.c
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:45 -02:00
Mauro Carvalho Chehab 1571720c5e V4L/DVB (5106): Do some cleanups at cx88-blackbird
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:45 -02:00
Mauro Carvalho Chehab 23154f2f3b V4L/DVB (5105): Reorder some ioctl handlers
Reorder some ioctl handlers to make easy to convert to video_ioctl2

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:45 -02:00
Mauro Carvalho Chehab ed10b06d8d V4L/DVB (5104): Moved several stuff that were at cx88-video to cx88-blackbird.c
cx88-blackbird were using some ioctl handling that were previously on
cx88-video.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:44 -02:00
Mauro Carvalho Chehab 243d8c0fd0 V4L/DVB (5103): Fix vidioc_g_tuner handling
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:44 -02:00
Mauro Carvalho Chehab 63ab1bdc3b V4L/DVB (5102): make videodev to auto-generate standards
v4l2_tvnorm were meant to describe video standards and its names to V4L2 API.
However, this were doing by some static structures at the driver.

This patch changes the internals in a way that, at the driver, only a
v4l2_tvnorm (a 64 bit integer) should be filled, with all supported 
tvnorms. videodev will dynamically generate the proper API array
based on supported standards.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:44 -02:00
Mauro Carvalho Chehab e90311a198 V4L/DVB (5101): Renamed video_mux to cx88_video_mux
video_mux is renamed to cx88_video_mux to be exported to cx88-blackbird

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:44 -02:00
Mauro Carvalho Chehab 54da49f5a4 V4L/DVB (5100): Make cx88-blackbird to work again
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:43 -02:00
Mauro Carvalho Chehab c526ab91a2 V4L/DVB (5099): Uncommented NTSC/443 video standard
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:43 -02:00
Mauro Carvalho Chehab 1427f6b6b9 V4L/DVB (5098): Added support for V4L2_STD_NTSC_443
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:43 -02:00
Mauro Carvalho Chehab 8d87cb9f31 V4L/DVB (5097): Convert cx8800 driver to video_ioctl2 handler
video_ioctl2 handler provides V4L2 API parsing.
Using it makes the driver simpler, and isolates API parsing.
This allows future reusage of driver controls using other ways, like sysfs
and/or procfs and increases isolation of driver-specific handling from the
generic common ioctl processing.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:42 -02:00
Mauro Carvalho Chehab 95efa03bd6 V4L/DVB (5012a): Remove some unused code from kernel mainstream
There are some long time unused code under some media driver source files. 
There's no need of keeping it at mainstream.
Those unused code will remain available at V4L/DVB master tree and also at
kernel history.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-02-21 13:34:15 -02:00
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00
Arjan van de Ven fa027c2a0a [PATCH] mark struct file_operations const 4
Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

[akpm@sdl.org: dvb fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:45 -08:00
Robert Hancock a96afb3e94 V4L/DVB (5021): Cx88xx: Fix lockup on suspend
Suspending with the cx88xx module loaded causes the system to lock up
because the cx88_audio_thread kthread was missing a try_to_freeze()
call, which caused it to go into a tight loop and result in softlockup
when suspending. Fix that.

Signed-off-by: Robert Hancock <hancockr@shaw.ca>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-01-15 16:25:31 -02:00
Jean Delvare 69f7e75a9d V4L/DVB (5010): Cx88: Fix leadtek_eeprom tagging
reference to .init.text: from .text between 'cx88_card_setup'
(at offset 0x68c) and 'cx88_risc_field'
Caused by leadtek_eeprom() being declared __devinit and called from
a non-devinit context.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-27 14:23:58 -02:00
Mauro Carvalho Chehab 315eb962d2 V4L/DVB (4980): Fixes bug 7267: PAL/60 is not working
On cx88 driver, sampling rate should be at chroma subcarrier freq (FSC).
However, driver were programming wrong values for PAL/60, PAL/Nc and
NTSC 4.43. This patch do the proper calculation. It also calculates
htotal, hdelay and hactive constants, according with the sampling
rate.
It is tested with PAL/60 by Piotr Maksymuk and Olivier. Also tested with
the already-supported standards.

Test is still required for PAL/Nc.

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-27 14:19:26 -02:00
Linus Torvalds 659dba3480 Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6
* 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  i2c: Fix OMAP clock prescaler to match the comment
  i2c: Refactor a kfree in i2c-dev
  i2c: Fix return value check in i2c-dev
  i2c: Enable PEC on more i2c-i801 devices
  i2c: Discard the i2c algo del_bus wrappers
  i2c: New ARM Versatile/Realview bus driver
  i2c: fix broken ds1337 initialization
  i2c: i2c-i801 documentation update
  i2c: Use the __ATTR macro where possible
  i2c: Whitespace cleanups
  i2c: Use put_user instead of copy_to_user where possible
  i2c: New Atmel AT91 bus driver
  i2c: Add support for nested i2c bus locking
  i2c: Cleanups to the i2c-nforce2 bus driver
  i2c: Add request/release_mem_region to i2c-ibm_iic bus driver
  i2c: New Philips PNX bus driver
  i2c: Delete the broken i2c-ite bus driver
  i2c: Update the list of driver IDs
  i2c: Fix documentation typos
2006-12-12 09:57:55 -08:00
Jean Delvare 3269711b76 i2c: Discard the i2c algo del_bus wrappers
They are all only calling i2c_del_adapter, so we may as well do
it directly.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10 21:21:33 +01:00
Mauro Carvalho Chehab 67952e8cb1 V4L/DVB (4949a): Fix INIT_WORK
INIT_WORK syntax changed on kernel 2.6.19. Fixing it on
usbvision and cx88-input.


Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 09:22:53 -02:00
Michael Krufky 4a390558a6 V4L/DVB (4947): Cx88: trivial cleanups
- small whitespace cleanups
- 80-column whitespace cleanups
- remove unneeded brackets

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 09:22:53 -02:00
Michael Krufky 22f3f17dd7 V4L/DVB (4946): Cx88: Move cx88_dvb_bus_ctrl out of the card-specific area
This function should not be in the card-specific area of the file.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 09:22:53 -02:00
Michael Krufky ed35526027 V4L/DVB (4945): Cx88: consolidate cx22702_config structs
There are five cx22702_config structs used by cx88-dvb, only two of which
are unique. This patch removes the duplicates and sets each card to use
one of the two remaining config structs.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 09:22:53 -02:00
Michael Krufky 5786a34b43 V4L/DVB (4944): Cx88: Convert DViCO FusionHDTV Hybrid to use dvb_pll_attach
Converted DViCO FusionHDTV Hybrid to use dvb_pll_attach, removing
another static dependency of cx88-dvb on dvb-pll.
Acked-by: Chris Pascoe <c.pascoe@itee.uq.edu.au>

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 09:22:53 -02:00
Michael Krufky 1d4bb7d3c1 V4L/DVB (4943): Cx88: cleanup dvb_pll_attach for lgdt3302 tuners
Since we're using dvb_pll_attach now, we dont have to populate
dev->core->pll_addr or dev->core->pll_desc anymore.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 09:22:53 -02:00
Trent Piepho 1c5ee876d6 V4L/DVB (4938): Cx88: Convert lgdt3302 tuning function to use dvb_pll_attach
There was a still a pre-dvb-pll set_params function for the lgdt3302 in
the cx88-dvb driver.  This patch removes that function and uses
dvb_pll_attach() for the cards that were using it (Dvico FusionHDTV 3
GOLD {Q,T}).  This way the set_params function from dvb-pll is used.
dvb_attach() is in turn used on dvb_pll_attach(), eliminating some static
dependencies on dvb-pll.  There are still a couple static dependencies on
dvb-pll remaining.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 09:22:53 -02:00
Dmitry Torokhov b07b4783fb V4L/DVB (4854): Handle errors from input_register_device()
Also sprinkled some input_sync() throughout the code.
Acked-by: Ricardo Cerqueira <v4l@cerqueira.org>
Acked-by: Oliver Endriss <o.endriss@gmx.de>
Acked-by: Andrew de Quincey <adq_dvb@lidskialf.net>

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 09:04:52 -02:00
Michael Krufky 76db93d03f V4L/DVB (4846): Create new lgh06xf atsc tuner module
This patch creates a new atsc tuner module for the LG TDVS-H06xF ATSC tuners,
called lgh06xf.  The purpose of this change is to reduce some duplicated
code, and to allow the lgh06xf tuner code to take advantage of dvb_attach().
As a side effect, the dependency of dvb-bt8xx on dvb-pll has been removed,
since the lgh06xf module itself will use dvb-pll, while remaining optional
for the dvb-bt8xx driver through the use of DVB_FE_CUSTOMISE
Acked-by: Andrew de Quincey <adq_dvb@lidskialf.net>

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 08:51:32 -02:00
Jelle Foks 2d90fa4412 V4L/DVB (4839): Add support ptv-305
Add subvendor/device of the ADSTech Instant TV Deluxe PTV-305 to the
card list as card=45 (KWORLD_HARDWARE_MPEG_TV_XPERT).

Signed-off-by: Jelle Foks <jelle@foks.8m.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 08:51:29 -02:00
Jelle Foks 49c6b46a05 V4L/DVB (4838): Fix cx88-blackbird null pointer
Allows 'debug=1' for cx88-blackbird module (dev needs to be valid for
dprintk). Fixes a null-pointer dereference when using debug=1.

Signed-off-by: Jelle Foks <jelle@foks.8m.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 08:51:29 -02:00
Michael Krufky fe16af26c8 V4L/DVB (4759): Cx88: use external adc for rca audio inputs on the ASUS PVR-416
For the ASUS PVR-416, the external adc must be used for
the rca audio inputs, but television / radio inputs use
the internal adc.
Thanks to Alex Deucher for lending his card to me.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 08:50:56 -02:00
Michael Krufky cc0f3f5135 V4L/DVB (4758): Cx88: use external adc for svideo/composite
For the KWorld HardwareMpegTV XPert, the external adc must be used for
svideo / composite inputs, but television / radio inputs use the internal adc.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 08:50:56 -02:00
Michael Krufky f24546a95a V4L/DVB (4757): Cx88: determine whether or not to use external adc
Some cx88-blackbird boards use an external adc, but not necessarily
for all inputs.  Thus, this needs to be configurable on the card level
for each input.
This patch allows for the usage of the external adc to be determined
by a bit setting in the cx88_input struct for cards based on the cx88
blackbird design.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 08:50:55 -02:00
Michael Krufky 5b26c82f95 V4L/DVB (4756): Cx88: cleanups
- fixed whitespace, replaced leading spaces with tabs
- moved .mpeg descriptor below input settings

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 08:50:54 -02:00
Steven Toth 019391e426 V4L/DVB (4736): Cx88-blackbird module is rejected during probe.
If the last cx88 board probed is not backbird based, and a previous board was,
the entire module is unloaded leading to an oops during mpeg_open on the
first /dev/videoN device.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 08:50:50 -02:00
Steven Toth 7343826370 V4L/DVB (4723): Bugfix: Select the correct cx8802_dev when enumerating by CX88_MPEG_type
A bug in cx8802_get_driver() meant that in multiboard environments, when testing
frontends on the non primary board, the incorrect device was returned resulting
in "Unsupported value in .mpeg.." messages. Depending on the electrical design
of the hardware (serial, parallel, rising/falling edge detect), transport would
still be delivered and the problem went unnoticed.
This patch ensures the correct instance of cx8802_dev is returned.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 08:50:48 -02:00
Steven Toth 6c5be74c86 V4L/DVB (4676): Dynamic cx88 mpeg port management for HVR1300 MPEG2/DVB-T support.
A series of patches to change the cx88 framework to allow the
PCI mpeg port to be shared dynamically between different
types of drivers or applications. This patch changes the cx88-dvb
and cx88-blackbird drivers to become 'sub drivers' of a higher
single cx88-mpeg driver.
The cx88-mpeg driver is a superset of the previous cx88-mpeg/blackbird
drivers and now owns the IRQ. cx88-dvb/blackbird now become mini drivers,
registering themselves with cx88-mpeg through a standard interface with
callbacks.
Sub drivers request access to hardware via the cx88-mpeg driver. In turn
the cx88-mpeg driver determines whether the hardware is busy and accepts
or refuses the request, grant access using callbacks into the sub drivers.
The net effect is that you are no longer able to tamper with the mpeg port
from multiple different applications at the same time, potentially breaking
a live mpeg2 hardware encoding or dvb stream.
The mechanism extends to enable multiple dvb frontends to be registered
and share the single resource.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2006-12-10 08:50:47 -02:00