Commit Graph

22733 Commits

Author SHA1 Message Date
Trent Piepho
0fd17d6da8 V4L/DVB (5455): Dvb-pll: Adjust rounding to be consistent
Some PLLs had one half the step size added to the offset, so that the
divisor would be rounded to the nearest integer.  Some didn't and so
would always be rounded down.

This makes dvb-pll round to the nearest when calculating the divisor,
without the offset needing to be fudged.  PLLs that had a fudged offset
have the offset changed to be just the IF frequency.
The satellite PLL dvb_pll_philips_sd1878_tda8261 was rounding up for some
reason, and I've kept it that way.

In addition, frequencies that were rounded to the nearest kHz are
extended to full Hz resolution.  One sixth MHz step sizes that were
listed as 166,666 Hz are changed to 166,667 Hz, which is slightly closer.

PLLs that were already rounding:
dvb_pll_tda665x, offset was 36 1/6 (to nearest kHz) + step/2
dvb_pll_fmd1216me, offset was 36 1/8 (to two digits) + step/2
dvb_pll_thomson_fe6600, offset was 36 1/8 (to two digits) + step/2
dvb_pll_env57h1xd5, offset was 36 1/8 + step

Note that the last PLL, dvb_pll_env57h1xd5, appears to have had a bug in
the offset.  Rather than adding stepsize/2, it was adding a full
stepsize.  The PLL definition originally came from the dibusb driver,
which used 36 1/8 + step/2.  The change to 36 1/8 + step was probably a
mistake added when the tuner was converted to dvb-pll.

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 15:44:56 -03:00
Trent Piepho
a5a2ecfc3b V4L/DVB (5452): Cx88: merge identical boards
The attach code for HAUPPAUGE_HVR3000 and HAUPPAUGE_HVR1300 is exactly
the same as the code used by HAUPPAUGE_HVR1100, HAUPPAUGE_HVR1100LP, and
WINFAST_DTV2000H.  So, those first two cards are added to the case block
used by the last three.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:55 -03:00
Pierre Willenbrock
59069e53a2 V4L/DVB (5449): M920x: add error messages for debugging purposes
Signed-off-by: Pierre Willenbrock <pierre@pirsoft.dnsalias.org>
Signed-off-by: Aapo Tahkola <aet@rasterburn.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:54 -03:00
Aapo Tahkola
7d1d4e6c58 V4L/DVB (5448): M920x: rename megasky_identify_state to m920x_identify_state
This function should work for all m920x-based devices.

Signed-off-by: Aapo Tahkola <aet@rasterburn.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:53 -03:00
Hartmut Hackmann
f3eec0c001 V4L/DVB (5446): Renamed ASUStek P7131 card [1043:4876]
The new name fits to what it is and what is on the box.

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:52 -03:00
Hartmut Hackmann
e06cea4cb4 V4L/DVB (5445): Added / corrected support for some ASUS hybrid boards
There are 2 new entries for p7131 boards and one correction for a board
with LNA.

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:52 -03:00
Hartmut Hackmann
cf83ac433c V4L/DVB (5444): Saa7134-dvb fix sleep function of the fmd1216 tuner.
Static locals should not be changed - the original contents gets lost.
Thanks to Trent Piepho for pointing me to this.

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:50 -03:00
Hartmut Hackmann
80d352374b V4L/DVB (5443): Saa7134: put tuner to sleep mode after board initialization
Besides power saving, this puts the AGC output of the tda8290
to tristate. This is necessary for some hybrid boards which
don't use a multiplexer for the AGC

Signed-off-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:49 -03:00
Oliver Endriss
1b2457680f V4L/DVB (5440): Dvb-ttpci: Infrared remote initialization fix
Fix bug introduced during infrared refactoring.
Thanks to Johann Friedrichs for spotting this.

Thanks-to: Johann Friedrichs <johann.friedrichs@web.de>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:49 -03:00
Ian Armstrong
9e0df402e6 V4L/DVB (5438): Fix ivtv yuv threshold handling
Modifies automatic mode selection for yuv playback. Behaviour is now that
source video with a vertical resolution below that of the currently set
broadcast mode will be treated as progressive. Video with a vertical
resolution greater or equal to the current broadcast mode (up to 576 lines)
will be treated as interlaced.

Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:48 -03:00
Hans Verkuil
31a7c549ed V4L/DVB (5436): Fix TV output initialization
The TV standard should be set AFTER the TV output is fully initialized.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:46 -03:00
Steven Toth
ddc285c763 V4L/DVB (5434): Updates to the tveeprom tuner, video decoder and audio chip
Some of the new tuner entries may need to be mapped to compatible
tuners already defined. I don't know for certain which tuners
are compatible between manufacturers.

Signed-off-by: Steven Toth <stoth@hauppauge.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:45 -03:00
Michael Krufky
923da8a750 V4L/DVB (5432): Cx88: whitespace cleanup
replace leading spaces with tabs

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:45 -03:00
Michael Krufky
733aeaf4c0 V4L/DVB (5431): Cx88: autodetect ADS Tech InstantTV DVB-S
The ADS Tech InstantTV DVB-S is a clone of the KWorld DVB-S 100.
This patch adds autodetection support for this card based on
pci subsystem id.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:44 -03:00
Trent Piepho
57f8dcf90b V4L/DVB (5428): M920x: Detect zero-length I2C messages and fix a typo
Change a 00 to just 0
Detect zero-length I2C messages and return not supported.  I think I know
how to send one, but the problem is getting the slave's ack.  The only
point of a zero-length message is for probing; too see if the slave will
ack its address.  Since we don't know how to get the ack, we can't
support zero-length messages in a useful way, so it's probably best to
just return not supported for them.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:43 -03:00
Trent Piepho
d40860f8e2 V4L/DVB (5427): M920x: Improve I2C operations
Write some better documentation about what might be known about how the
m920x I2C works, since a datasheet is lacking.
The I2C xfer function should now handle more types of I2C transactions
than it could before.  Those it can't, will return error codes instead of
being executed incorrectly.  Multi-byte reads were not being done
correctly, which should be fixed.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:42 -03:00
Aapo Tahkola
634bc48da7 V4L/DVB (5426): M920x: remove unneeded code
Signed-off-by: Aapo Tahkola <aet@rasterburn.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:41 -03:00
Aapo Tahkola
480ac76172 V4L/DVB (5425): M920x: rework driver code to allow for different devices
Signed-off-by: Aapo Tahkola <aet@rasterburn.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:41 -03:00
Aapo Tahkola
26a154c355 V4L/DVB (5424): Fix i2c implementation for gl861 and au6610
- r/w bit is not part of the i2c address

Signed-off-by: Aapo Tahkola <aet@rasterburn.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:36 -03:00
Aapo Tahkola
26247018be V4L/DVB (5423): M920x: i2c cleanups
- Implement m920x i2c as suggested by Pierre Willenbrock
- remove "magic" hack
- r/w bit is not part of the i2c address
- move hardware remarks to header file

Signed-off-by: Aapo Tahkola <aet@rasterburn.org>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:35 -03:00
Hans Verkuil
fee73165ee V4L/DVB (5420): Initialize the inputs before registering the devices.
Once the devices have been registered anyone can start changing the inputs or
TV standard before they have been initialized by the driver. This leads to
cases were the input is changed in an udev rule, but after that rule is
triggered the tail-end of the ivtv driver initialization can override
that by selecting the tuner input.
The correct sequence is to first setup the input, initial frequency and TV
standard before finally registering the video devices. This prevents any
udev rules from being triggered prematurely.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:35 -03:00
Hans Verkuil
f40a291684 V4L/DVB (5417): First unregister the driver, and then free the memory.
ivtv_remove which is called by pci_unregister_driver was still using
memory that was already freed. Ouch.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:33 -03:00
Hans Verkuil
6773c1c24d V4L/DVB (5416): Use pci_register_driver instead of pci_module_init in ivtv.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:32 -03:00
Hans Verkuil
1e5e9aab31 V4L/DVB (5414): Add missing kfree in early exit of saa7115.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:31 -03:00
Hans Verkuil
d6102900e7 V4L/DVB (5413): Use spin_lock_init to fix lockdep warnings.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:30 -03:00
Hans Verkuil
25415cf3b8 V4L/DVB (5412): Fix VIDIOC_TRY_ENCODER_CMD and VIDEO_TRY_COMMAND
VIDIOC_TRY_ENCODER_CMD did the same as VIDIOC_ENCODER_CMD, now it no longer
touches the encoder.
Both the encoder and decoder commands did not clear the flags field of unknown
flags.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:29 -03:00
Hans Verkuil
d4e7ee36f9 V4L/DVB (5411): Use v4l_printk_ioctl for debug
Using v4l_printk_ioctl saves a lot of code duplication. Also moved a few
ioctl cases to another function, improving the ioctl grouping.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:29 -03:00
Hans Verkuil
d46c17d7aa V4L/DVB (5410): Add VIDIOC_G/S_PRIORITY support to ivtv.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:28 -03:00
Hans Verkuil
b6735ac24e V4L/DVB (5406): Add comment why the symbols are exported.
It is not immediately obvious why the ivtv symbols are exported
in ivtv-driver.c since both ivtv-fb and the IR-blaster module
are still out-of-tree, currently being ported to be in kernel.

Added a comment so people are aware of these issues.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:26 -03:00
Hans Verkuil
83df8e7b0d V4L/DVB (5405): Add missing includes.
Every file should include the headers containing the prototypes
for its global functions.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:25 -03:00
Hans Verkuil
1e13f9e3f1 V4L/DVB (5404): Merges VBI & YUV handling into a single work queue.
Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:24 -03:00
Hans Verkuil
037c86c533 V4L/DVB (5403): Set vsync_field correctly in ivtv.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:23 -03:00
Oliver Neukum
5332bdbe9a V4L/DVB (5399): Usbvideo module handling
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:22 -03:00
Oleg Nesterov
5cdc178d1c V4L/DVB (5398): Cpia_pp.c: don't use _WORK_NAR
pp_cam_entry->cb_task need not to be _NOAUTOREL ... because in fact it is
never used ???

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:21 -03:00
Adrian Bunk
15f189e978 V4L/DVB (5397): Saa7134: fix MODULES=n compilation
This patch fixes the following compile error with CONFIG_MODULES=n:
  CC      drivers/media/video/saa7134/saa7134-core.o
/home/bunk/linux/kernel-2.6/linux-2.6.21-rc2-mm1/drivers/media/video/saa7134/saa7134-core.c:979:24: error: macro "request_submodules" passed 1 arguments, but takes just 0
/home/bunk/linux/kernel-2.6/linux-2.6.21-rc2-mm1/drivers/media/video/saa7134/saa7134-core.c: In function 'saa7134_initdev':
/home/bunk/linux/kernel-2.6/linux-2.6.21-rc2-mm1/drivers/media/video/saa7134/saa7134-core.c:979: error: 'request_submodules' undeclared (first use in this function)
/home/bunk/linux/kernel-2.6/linux-2.6.21-rc2-mm1/drivers/media/video/saa7134/saa7134-core.c:979: error: (Each undeclared identifier is reported only once
/home/bunk/linux/kernel-2.6/linux-2.6.21-rc2-mm1/drivers/media/video/saa7134/saa7134-core.c:979: error: for each function it appears in.)
make[5]: *** [drivers/media/video/saa7134/saa7134-core.o] Error 1

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>
2007-04-27 15:44:20 -03:00
Trent Piepho
93566ad806 V4L/DVB (5392): Zr364xx: Use kernel's byte-swapping function
Some code to swap bytes wasn't using the swab16() function that the
kernel provides for this.  Make use of it, which results in more
efficient code.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Acked-by: Antoine Jacquet <royale@zerezo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:19 -03:00
Trent Piepho
cf3c34c87f V4L/DVB (5391): Saa7134: Clean up printk()s
Change some debug messages from printk() to dprintk().

Add KERN_WARNING and KERN_ERR level indicators to other printk()s that
lacked them.

Format printk lines with consistent ("%s/dvb: ", dev->name) prefix.

Fixed dprintk macro, which had an if with no else that wasn't protected
with a do {} while(0) block.  That leads to "if(...) dprintk(); else" not
doing what one would expect.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Acked-by: Hartmut Hackmann <hartmut.hackmann@t-online.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:18 -03:00
Hans Verkuil
3b35b4b380 V4L/DVB (5389): Add tveeprom entry for tuner LG S701D MK3
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:18 -03:00
Andrew Morton
a415783bbb V4L/DVB (5388): Ivtv warning fix
drivers/media/video/ivtv/ivtv-i2c.c:547: warning: initializer-string for array of chars is too long
drivers/media/video/ivtv/ivtv-i2c.c:547: warning: (near initialization for 'ivtv_i2c_client_template.name')

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:17 -03:00
Dwaine P. Garden
e6c1df5581 V4L/DVB (5386): Add some missing Hauppauge and Belkin devices to the driver
-Add some missing Hauppauge and Belkin devices to the driver.
-Fixed up some device descriptions.

Signed-off-by: Dwaine P. Garden <DwaineGarden@rogers.com>
Signed-off-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:16 -03:00
Antoine Jacquet
2575f84a50 V4L/DVB (5385): Fix compilation issue with zr364xx when V4L1 is disabled
Add a missing header to fix compilation issue in the zr364xx driver when
CONFIG_VIDEO_V4L1 and CONFIG_VIDEO_V4L1_COMPAT are not set.

Signed-off-by: Antoine Jacquet <royale@zerezo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:15 -03:00
Emil Georgiev
a6210b7bea V4L/DVB (5383): Fix duplicated codes in Pinnacle Grey remote
The keymap for this remote had duplicated labels for different keys,
which resulted in those key pairs being unable to function as different
inputs.

Signed-off-by: Emil Georgiev <emilonlinester@gmail.com>
Signed-off-by: Ricardo Cerqueira <v4l@cerqueira.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:15 -03:00
Oliver Endriss
14500d4a51 V4L/DVB (5381): Dvb-ttpci: Update frontend lock status in transfer mode (bugfix)
In transfer/replay mode the frontend lock status was never updated.
This caused a 'black screen' if VDR switched from transfer mode to
live mode on the same transponder.
Thanks to Marco Schluessler for spotting the problem.

Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:14 -03:00
Jean Delvare
bfce1747e8 V4L/DVB (5380): Cx25840-firmware include cleanup
There is no reason why cx25840-firmware.c would need to include
<linux/i2c-algo-bit.h>.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:14 -03:00
Hans Verkuil
31ec135610 V4L/DVB (5379): If possible make vars/functions static.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:13 -03:00
Hans Verkuil
43053c07fa V4L/DVB (5378): Add missing IVTV_FB_WARN #define
This is needed for ivtv-fb.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:13 -03:00
Hans Verkuil
a51a50bd01 V4L/DVB (5377): Replace SA_* with IRQF_*
SA_* interrupt flags are being phased out, update to newer flags.
Thanks to Maarten Maathuis for pointing this out to me.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:12 -03:00
Hans Verkuil
4b0e51dd6d V4L/DVB (5376): Add dependency on VIDEO_V4L1
VIDEO_V4L1 is needed to get tvaudio to be built. Stupid really as ivtv is only
using the v4l2 API to communicate with tvaudio.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:12 -03:00
Hans Verkuil
82dcab2d62 V4L/DVB (5375): Add missing VIDEO_CX25840 dep, remove unused VIDEO_TLV320AIC23B dep
VIDEO_CX25840 was missing in the ivtv dependencies. VIDEO_TLV320AIC23B
was removed since it isn't used by ivtv.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:11 -03:00
Trent Piepho
d9e54324d0 V4L/DVB (5374): Or51132: refactor i2c code, improve error resilience
The code the i2c transactions was leftover from the old V4L-based ATSC
driver.  It did too little with too much code.  It is re-written to
remove unnecessary parameters and be more efficient.  A demod register
can now be read with one function call, instead of repeating a dozen line
block of code each time.

There were msleep()'s, which appear to be unnecessary, spread around all
the I2C transactions.  These have been removed.  Reading SNR used to take
about 130 ms, now it's down to 1.8 ms.

Reads from the demodulator's registers do not return correct results
sometimes.  Adding or removing the delays in the I2C transactions did not
appear to effect the probability of failure.  If anything, the
transactions without delays were less likely to fail, but since far more
transactions could be made per second the number of failures per hour was
greater.

To increase reliability, the SNR and get_params functions will now retry
once if they get bad data back.  This appears to have reduced the
probability of failure to effectively zero.
Some error messages are cleaned up or given KERN_* levels when they were
missing.  

or51132_setmode() wasn't returning correct error codes, which is fixed as
well.

CC: Rusty Scott <rustys@ieee.org>
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:09 -03:00