Converted em28xx driver to v4l2_subdev.
Thanks to Hans Verkuil <hverkuil@xs4all.nl> for helping this conversion.
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add missing URB_NO_TRANSFER_DMA_MAP flag, since the use of consistent memory
is not permitted for DMA on the ARM platform.
Thanks to Paul Thomas <pthomas8589@gmail.com> for providing sample ARM
hardware that was experiencing the oops (tested on the at91rm9200 based
LinuxStamp).
Thanks to David Brownell <david-b@pacbell.net> for providing insight into the
ARM memory architecture.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The HVR-900 did not have a remote control defined, so it would not work. Add
the line for both versions of the product.
Thanks to Jens-Michael Hoffmann (#linuxtv user "jmho") for pointing out the
issue and testing the patch.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The removal of the timer which polls the infrared input is racy.
Replacing the timer with a delayed work solves the problem.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Compro VideoMate uses an external audio DSP chip, controlled via tvaudio
module (tda9874a). This patch improves em28xx infrastructure to support
an external audio processor and fixes the Compro VideoMate entry to work
with it.
Signed-off-by: Vitaly Wool <vital@embeddedalley.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Added usb vendor/product id for Kaiser Baas Video to DVD maker.
Thanks to Trevor Campbell <tca42186@bigpond.net.au> for providing all data and tests needed to add this card to em28xx driver.
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Added SIIG AVTuner-PVR to the right entry.
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Removed EM2821_BOARD_PROLINK_PLAYTV_USB2 entry.
This entry has a incorrect tuner set.
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
As reported by Vitaly Wool <vital@embeddedalley.com>:
> about half a year ago I posted the patch that basically enabled Compro
> VideoMate For You USB TV box support.
> The main problem is I couldn't get the sound working.
> So I kind of decomposed the box and found out the audio decoder chip
> used there was Philips TDA9874A. As far as I can see, it's not supported
> within the em28xx suite although it is for other TV tuner drivers.
A tvaudio modprobing confirms that tda9874a chip is accessible via i2c:
tvaudio: TV audio decoder + audio/video mux driver
tvaudio: known chips: tda9840, tda9873h, tda9874h/a, tda9850, tda9855, tea6300, tea6320, tea6420, tda8425, pic16c54 (PV951), ta8874z
tvaudio' 1-0058: chip found @ 0xb0
tvaudio' 1-0058: tvaudio': chip_read2: reg254=0x11
tvaudio' 1-0058: tvaudio': chip_read2: reg255=0x2
tvaudio' 1-0058: tda9874a_checkit(): DIC=0x11, SIC=0x2.
tvaudio' 1-0058: found tda9874a.
tvaudio' 1-0058: tda9874h/a found @ 0xb0 (em28xx #0)
tvaudio' 1-0058: tda9874h/a: chip_write: reg0=0x0
tvaudio' 1-0058: tda9874h/a: chip_write: reg1=0xc0
tvaudio' 1-0058: tda9874h/a: chip_write: reg2=0x2
tvaudio' 1-0058: tda9874h/a: chip_write: reg11=0x80
tvaudio' 1-0058: tda9874h/a: chip_write: reg12=0x0
tvaudio' 1-0058: tda9874h/a: chip_write: reg13=0x0
tvaudio' 1-0058: tda9874h/a: chip_write: reg14=0x1
tvaudio' 1-0058: tda9874h/a: chip_write: reg15=0x0
tvaudio' 1-0058: tda9874h/a: chip_write: reg16=0x14
tvaudio' 1-0058: tda9874h/a: chip_write: reg17=0x50
tvaudio' 1-0058: tda9874h/a: chip_write: reg18=0xf9
tvaudio' 1-0058: tda9874h/a: chip_write: reg19=0x80
tvaudio' 1-0058: tda9874h/a: chip_write: reg20=0x80
tvaudio' 1-0058: tda9874h/a: chip_write: reg24=0x80
tvaudio' 1-0058: tda9874h/a: chip_write: reg255=0x0
tvaudio' 1-0058: tda9874a_setup(): A2, B/G [0x00].
tvaudio' 1-0058: tda9874h/a: thread started]
This patch automatically loads tvaudio when needed (currently, only
with this board).
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Added board Pinnacle Dazzle Video Creator Plus DVC107 to name description field.
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Lots of coding style fixes and a typo correction for em28xx.
[dougsland@redhat.com: fixed a reject due to a change on em28xx-audio.c]
Signed-off-by: Nicola Soranzo <nsoranzo@tiscali.it>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Patch removes printk and place em28xx_errdev macros to provide
information about driver name to dmesg.
Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Essentially if a snd_em28xx_capture_trigger() stop followed by a snd_em28xx_capture_trigger() start would not yield any
data because there was some logic put in with an adev->shutdown variable which did not seem warranted in my humble opinion.
It would cause snd_em28xx_capture_trigger start never to start up the audio stream until the device was closed and
reopened again. Upon re-opening the device adev->shutdown is reset and audio data would again flow.
Signed-off-by: Robert Krakora <rob.krakora@messagenetsystems.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix for em28xx memory leak and function rename
Signed-off-by: Robert Krakora <rob.krakora@messagenetsystems.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Removed bad check. Thanks to Robert Krakora <rob.krakora@messagenetsystems.com>
to report that.
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Kaiomy entry.
Thanks to Peter Senna Tschudin <peter.senna@gmail.com> for borrow me one
of those devices.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Just call em28xx_isoc_audio_deinit() if em28xx sent a usb_submit().
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Added entry for GADMEI TVR200.
Thanks to Yohanes Nugroho <yohanes@gmail.com> for testing and data collection.
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
usb_make_path reports canonical bus info. Use it when reporting bus info
in VIDIOC_QUERYCAP.
Signed-off-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
As explained in "Writing an ALSA driver" (T. Iwai), audio drivers should
set the struct device for the card before registering the card instance.
This will add the correct /sys/class/sound/cardN/device symlink, so HAL
can see the device and ConsoleKit sets its ACL permissions for the
logged-in user.
For em28xx audio capture cards found e.g. in Hauppauge WinTV-HVR-900 (R2),
this patch fixes errors like:
ALSA lib pcm_hw.c:1429:(_snd_pcm_hw_open) Invalid value for card
Error opening audio: Permission denied
when running mplayer as a normal user.
Signed-off-by: Nicola Soranzo <nsoranzo@tiscali.it>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Trace: (Provided by Douglas)
BUG: sleeping function called from invalid context at drivers/usb/core/urb.c:558
in_atomic():0, irqs_disabled():1
Pid: 4918, comm: sox Not tainted 2.6.27.5 #1
[<c04246d8>] __might_sleep+0xc6/0xcb
[<c058c8b0>] usb_kill_urb+0x1a/0xd8
[<c0488e68>] ? __kmalloc+0x9b/0xfc
[<c0488e85>] ? __kmalloc+0xb8/0xfc
[<c058cd5a>] ? usb_alloc_urb+0xf/0x31
[<f8dd638c>] em28xx_isoc_audio_deinit+0x2f/0x6c [em28xx_alsa]
[<f8dd6573>] em28xx_cmd+0x1aa/0x1c5 [em28xx_alsa]
[<f8dd65e1>] snd_em28xx_capture_trigger+0x53/0x68 [em28xx_alsa]
[<f8aa8674>] snd_pcm_do_start+0x1c/0x23 [snd_pcm]
[<f8aa85d7>] snd_pcm_action_single+0x25/0x4b [snd_pcm]
[<f8aa9833>] snd_pcm_action+0x6a/0x76 [snd_pcm]
[<f8aa98f5>] snd_pcm_start+0x14/0x16 [snd_pcm]
[<f8aae10e>] snd_pcm_lib_read1+0x66/0x273 [snd_pcm]
[<f8aac5a3>] ? snd_pcm_kernel_ioctl+0x46/0x5f [snd_pcm]
[<f8aae4a7>] snd_pcm_lib_read+0xbf/0xcd [snd_pcm]
[<f8aad774>] ? snd_pcm_lib_read_transfer+0x0/0xaf [snd_pcm]
[<f89feeb6>] snd_pcm_oss_read3+0x99/0xdc [snd_pcm_oss]
[<f89fef9c>] snd_pcm_oss_read2+0xa3/0xbf [snd_pcm_oss]
[<c064169d>] ? _cond_resched+0x8/0x32
[<f89ff0be>] snd_pcm_oss_read+0x106/0x150 [snd_pcm_oss]
[<f89fefb8>] ? snd_pcm_oss_read+0x0/0x150 [snd_pcm_oss]
[<c048c6e2>] vfs_read+0x81/0xdc
[<c048c7d6>] sys_read+0x3b/0x60
[<c04039bf>] sysenter_do_call+0x12/0x34
=======================
The culprit in the trace is snd_pcm_action() which invokes a spin lock
which disables pre-emption which disables an IRQ which causes the
__might_sleep() function to fail the irqs_disabled() test. Since
pre-emption is enabled then it is safe to de-allocate the memory if
you first unlink each URB. In this instance you are safe since
pre-emption is disabled. If pre-emption and irqs are not disabled then
call usb_kill_urb(), else call usb_unlink_urb().
Thanks to Douglas for tracking down this bug originally!!!
[dougsland@redhat.com: Fixed codyingstyle]
Signed-off-by: Robert Krakora <rob.krakora@messagenetsystems.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Revert a change made in change 9743 which resulted in a kernel panic in some
cases on shutdown of the audio stream.
First discovered when working on the Pinnacle 880e support, and later
reproduced by a user on the mailing list with the HVR-900 as well.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix for KWorld 330U Board
Many thanks to Devin and Mauro!!!
Signed-off-by: Robert Krakora <rob.krakora@messagenetsystems.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix for KWorld 330U AC97
Many thanks to Devin and Mauro again!!!
Signed-off-by: Robert Krakora <rob.krakora@messagenetsystems.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Some em28xx devices use the PCM IN AC 97 PIN for digital audio. However,
currently, the PCM IN selection is not set by the driver. This patch allows
specifying the PCM IN expected output, via board description table.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
em28xx were trying to access the third input entry, even for boards that
don't support it.
This patch reviews the input mux selection fixing this bug and a few
other troubles, like not validating the input on one userspace ioctl.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
/home/v4l/master/v4l/em28xx-core.c:396:25: warning: symbol 'outputs' was not declared. Should it be static?
/home/v4l/master/v4l/em28xx-input.c:324:6: warning: symbol 'em28xx_ir_start' was not declared. Should it be static?
/home/v4l/master/v4l/em28xx-cards.c:1925:5: warning: symbol 'em28xx_init_dev' was not declared. Should it be static?
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Some devices require different setups on struct_audio. Due to that, we
may need to change some fields at dev.adev during device probe. So, this
patch moves the dynamic memory allocation of adev at em28xx-alsa to the
dynamic allocation of struct em28xx dev that happens during device
probe.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Since the i2c driver ID will be removed in the near future we have to
modify the v4l2 debugging API to use the driver name instead of driver ID.
Note that this API is not used in applications other than v4l2-dbg.cpp
as it is for debugging and testing only.
Should anyone use the old VIDIOC_G_CHIP_IDENT, then this will be logged
with a warning that it is deprecated and will be removed in 2.6.30.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Introduce a struct v4l2_file_operations for v4l2 drivers.
Remove the unnecessary inode argument.
Move compat32 handling (and llseek) into the v4l2-dev core: this is now
handled in the v4l2 core and no longer in the drivers themselves.
Note that this changeset reverts an earlier patch that changed the return
type of__video_ioctl2 from int to long. This change will be reinstated
later in a much improved version.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This set of patches introduces calls to the following set of functions:
usb_endpoint_dir_in(epd)
usb_endpoint_dir_out(epd)
usb_endpoint_is_bulk_in(epd)
usb_endpoint_is_bulk_out(epd)
usb_endpoint_is_int_in(epd)
usb_endpoint_is_int_out(epd)
usb_endpoint_is_isoc_in(epd)
usb_endpoint_is_isoc_out(epd)
usb_endpoint_num(epd)
usb_endpoint_type(epd)
usb_endpoint_xfer_bulk(epd)
usb_endpoint_xfer_control(epd)
usb_endpoint_xfer_int(epd)
usb_endpoint_xfer_isoc(epd)
In some cases, introducing one of these functions is not possible, and it
just replaces an explicit integer value by one of the following constants:
USB_ENDPOINT_XFER_BULK
USB_ENDPOINT_XFER_CONTROL
USB_ENDPOINT_XFER_INT
USB_ENDPOINT_XFER_ISOC
An extract of the semantic patch that makes these changes is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r1@ struct usb_endpoint_descriptor *epd; @@
- ((epd->bmAttributes & \(USB_ENDPOINT_XFERTYPE_MASK\|3\)) ==
- \(USB_ENDPOINT_XFER_CONTROL\|0\))
+ usb_endpoint_xfer_control(epd)
@r5@ struct usb_endpoint_descriptor *epd; @@
- ((epd->bEndpointAddress & \(USB_ENDPOINT_DIR_MASK\|0x80\)) ==
- \(USB_DIR_IN\|0x80\))
+ usb_endpoint_dir_in(epd)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The current code was trying to query the AC97 registers for the vendor
information even if it was clearly not a AC97 audio device (resulting in errors
in the dmesg output). This was due to a bug in the way we did the check.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add additional output formats, which will be useful for the Pinnacle PCTV
Ultimate 880e integration with the saa7136.
Thanks to Ray Lu from Empia for providing the em2860/em2880 datasheet.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Noticed when doing the audio support for the Pinnacle PCTV HD Ultimate 808e
that the modes were incorrect (the 808e uses I2S in 5 sample mode)
Thanks for Ray Lu from Empia for providing the em2860/em2880 datasheet.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Like the em2874, the em2870 does not have any analog support, so don't bother
loading the em28xx-alsa module.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The Pinnacle 80e cannot be supported since Micronas yanked their driver
support for the drx-j chipset at the last minute. Remove the device profile
since it cannot work without the drx driver and it being there is only likely
to confuse people into thinking the device is supported but not working.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The DVC 100 profile is redundant since we already have an existing identical
profile named "Pinnacle Dazzle DVC 90/DVC 100"
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Correct problem introduced during the board refactoring where the XCLK
frequency would get zero'd out. The sequence of events was as follows:
em28xx_pre_card_setup() called em28xx_set_model()
em28xx_set_model() would memcpy to dev->board configuration
em28xx_pre_card_setup() would set the dev->board.xclk if not set
em28xx_pre_card_setup() would set the XCLK register based on dev->board.xclk
...
em28xx_card_setup() would call em28xx_set_model()
em28xx_set_model() would memcpy to dev->board configuration (clearing out
value of dev->board.xclk set in em28xx_pre_card_setup)
...
em28xx_audio_analog_set() sets the XCLK register based on dev->board.xclk
(which now contains zero)
The change sets the default XCLK and I2C Clock fields in the board definition
inside of em28xx_set_model() so that subsequent calls do not cause the
values to be overwritten.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Now, just two routines are enough for analog: the first one configs the analog
part and register V4L2 devices, and the second one release analog devices.
After this patch, it will be easier to transform em28xx-video into an em28xx
extension, loaded only on analog devices.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
em28xx-video were holding several code that are not specific to V4L2
interface.
This patch moves the core code for em28xx-core, and usb probing code
into em28xx-cards.
This opens the possibility of breaking em28xx into a core module and a
V4L2 module, loaded only on devices that have analog interfaces.
Some cleanup may be done at em28xx-cards to optimize the config code.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The em28xx driver can be coupled to an anciliary AC97 chip. This patch
allows read/write AC97 registers directly.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch uses the same code for enumberating video formats that are
present on cx88, bttv and saa7134 drivers.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The changeset 78aa52a159cf introduced a bug on em28xx: buffer setup should be
awaking xc3028. Instead, since we didn't specify the tuner mode, the device
were going to sleep, due to the lack of tuner mode when asking tuner to handle
VIDIOC_S_FREQUENCY:
xc2028 0-0061: Device is Xceive 3028 version 1.0, firmware version 2.7
xc2028 0-0061: divisor= 00 00 14 d0 (freq=83.250)
xc2028 0-0061: Putting xc2028/3028 into poweroff mode.
xc2028 0-0061: Printing sleep stack trace:
Pid: 10936, comm: mplayer Tainted: P M 2.6.27.8 #1
Call Trace:
[<ffffffffa0b759ea>] xc2028_sleep+0x89/0x1ab [tuner_xc2028]
[<ffffffffa0b48fb9>] tuner_s_frequency+0xf5/0x165 [tuner]
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Don't operate under the assumption that every device that uses the em2820
default USB ID is a Prolink PlayTV USB. We have an eeprom hash, so use that,
since otherwise we cannot support other devices with the 2820 default USB ID
(such as the ADS Tech Instant TV USB USBAV-704)
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add the em2870 to the list of known em28xx chip ids.
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Changes/fixes on em28xx dev->lock:
- em28xx_init_dev() were unlocking without a previous lock;
- some read ioctls need to lock after the removal of KBL, since a write
may be happening at the same time an ioctl is reading;
- keep the device locked during all device initialization;
- lock/unlock while reading/writing registers.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
vidioc_try_fmt_vid_cap() just checks if a given resolution is supported.
It doesn't touch on struct em28xx device descriptor. so, there's no need
to lock.
While there, use unlikely() for those values that aren't likely to
occur.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
em28xx devices generally get hot when xc3028 tuner is powered on. This
patch solves this by turning power off when the device is not used, at the
expense of having a higher load time, when calling a TV application.
Since firmware load happens on 1 or 2 seconds on most devices, this is not a pain.
Also, it helps to save the planet by saving some power :)
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Change log format to look more like URB transactions. In fact, setup and
IN/OUT transactions are merged. This helps to debug the driver.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Several chips may be turned off when the device is not used, like audio,
video and dvb demods. This patch adds a gpio callback at the core
structs to allow turning off such devices.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
A previous changeset moved gpio from em28xx struct into em28xx_board.
However, the driver were not updated to properly honor those gpio's.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Before this patch, several devices without tuner were kept the value 0
for tuner_type. However, this means TUNER_TEMIC_PAL. Replace those
entries for the proper TUNER_ABSENT value.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Instead of a large, ugly switch specifying the gpio tables for each
device, let's move it into the boards struct. This also helps to see
what boards have already the gpio's for DVB.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Replaces all occurrences of em28xx_write_regs_req() and em28xx_write_reg()
used to setup register names by em28xx_write_reg().
Also, documents the register names that are known.
This patch were generated by this small perl script:
my %reg_map = (
# Register table - the same as defined on parse_em28xx.pl script
);
while (<>) {
if (m/(.*)em28xx_write_regs_req\(dev\,\s*0x00\,\s*(.*)\,\s*\"\\x(..)\",\s*1\)\;(.*)/) {
my $reg = $2;
my $val = $3;
$val =~ tr/A-f/a-f/;
$reg = $reg_map{$reg} if defined($reg_map{$reg});
printf "$1em28xx_write_reg(dev, %s, 0x%s);$4\n", $reg, $val;
} elsif (m/(.*)em28xx_write_regs\(dev\,\s*(.*)\,\s*\"\\x(..)\",\s*1\)\;(.*)/) {
my $reg = $2;
my $val = $3;
$val =~ tr/A-f/a-f/;
$reg = $reg_map{$reg} if defined($reg_map{$reg});
printf "$1em28xx_write_reg(dev, %s, 0x%s);$4\n", $reg, $val;
} else {
print $_;
}
}
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Now, the first message states board names. Also, removed printing the alternate
settings by default. I2C messages are now clearer.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Since saa7115 has saa711x chip auto-detection, there's no need on differenciating
it at cards table. Just use the generic name for all boards that use a philips
saa711x decoder.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Several fields are duplicated on both structs. Let's just copy em28xx_board instead.
A later cleanup could just copy the fields that are changed, in order to keep em28xx_board
const.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Remove unused em28xx_board.vchannels and em28xx.video_channels.
Also, .is_em2800 = 0 is not needed, as all data is zeroed by kernel loader.
The table also included a notice that svideo weren't test on Hauppauge
USB2. Remove this notice, since this input also works properly.
Also, it does some whitespace cleanups.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The previous patches removed XCLK and I2C magic. Now, we finally know
what those registers do. Also, only a very few cards need different
setups for those.
Instead of keeping the setups for those values inside the per-device
hack magic switch, move the uncommon values to the board-specific
struct, and have a common setup for all other boards.
So, almost 100 lines of hacking magic were removed.
A co-lateral effect of this patch is that it also fixes a bug at em28xx-core, where xclk
were set, without taking any care about not overriding a previous xclk setup.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cleanup the calls to set the GPIOs and GPOs for various devices,
replacing the register number with the #define from em28xx-reg.h and
converting over to using em28xx_write_reg()
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Convert over to setting the XCLK register usage with the new em28xx_write_reg()
function.
Thanks to Ray Lu from Empia for providing the em2860/2880 datasheet.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
On some em28xx devices, there's an unused interface. This is printed on
the logs as an error. We can just ignore that interface.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
If removing and reiserting the driver on some devices, tuner type will
be unset at the second time. This patch fixes this issue.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch cleans up the entries of xc2028/3028, since those devices
don't need or use a tda9887.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Pixelview uses a Sigmatel stac codec. It has an external line out pin,
connected to AC97_MASTER_VOL. It also provides I2S output, but using a
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Some devices use more than one AC97 outputs. This patch allows such
devices to properly work.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Some boards use different AC97 setups for output. This patch adds the
capability of specifying the output to be used. Currently, only one
output is selected, but the better is to allow user to select it via a
mixer, on alsa driver.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Convert the calls that write the i2c clock register over to the new
em28xx_write_reg() function that allows for or'ing bits
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Introduce a new function that writes to a single register. This is
useful because the vast majority of register writes are a single
register, and this format permits or'ing register value bits together.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
AC97 devices provide several input and outputs. However, before this
patch, em28xx device weren't properly allowing the usage of ac97
possible combinations. Also, several input volumes were left untouched,
instead of making sure that the volumes were set on mute state.
This patch improves support for ac97 devices by allowing to use any
inputs, and making sure that unused inputs are set on mute state.
Yet, some work is still needed to select the AC97 output.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This makes easier to identify vendor ID, since AC97 vendors are
generally identified by 3 bytes. The remaining byte is used by the
vendor to identify its devices.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch properly implements audio handling on em28xx. Before this
patch, it was assumed that every device has an Empia 202 audio chip.
However, this is not true.
After this patch, specific AC97 chipset setup and configurations can be
done.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
audio mux entries were described by 0 and 1 magic numers. Use an enum
alias for each entry type.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Make use of the em28xx chip configuration register to determine whether
we have AC97 audio, I2S audio, or no audio support at all.
Thanks for Ray Lu from Empia for providing the em2860/em2880 datasheet.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Previously, AC97 registers were named as if they were part of em28xx
device, generating some confusion. Replace such names for a more general
naming convention.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add support for the ATI TV Wonder HD 600 USB Remote Control
(required a new keymap)
[mchehab@redhat.com: Fix CodingStyle]
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Refactor the em28xx IR support based on the em2860/em2880 and em2874
datasheets.
Tested on the HVR-950 (em2883), Pinnacle 800e (em2883), Pinnacle 80e (em2874)
using the remote controls that came with those products.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The first em28xx were based on i2c IR's. However, some newer designs
are coming with a polling-based IR. Those are done by reading a register
set at em28xx.
This patch adds core polling support for those devices. Later patches will
add support for some device-specific IR's.
This patch adds the same basic IR polling code used by bttv, cx88 and saa7134, and
shares the common getkey masks defined at ir-common.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add registration for Pinnacle 80e ATSC tuner
Register the em2874 based Pinnacle 80e device. Note that support for this
device also requires the new drx-j driver (which is not available yet)
Thanks for Ray Lu from Empia for providing the em2874 datasheet.
Thanks to Joerg Schindler from Pinnacle for providing sample hardware.
Thanks to Rainer Miethling from Pinnacle for providing engineering support.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Properly support capture start on em2874
The transport stream enable register moved in the em2874, so make it work
properly.
Thanks for Ray Lu from Empia for providing the em2874 datasheet.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Rework the logic so that the em28xx-alsa module does not get loaded for devices
that don't support analog audio (such as the em2874)
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Empia moved around their endpoint configuration in newer chips, so accommodate
the changes
Thanks for Ray Lu from Empia for providing the em2874 datasheet.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix case where we could end up dereferencing a NULL pointer if dev->vdev or
dev->vbi_dev were not set properly.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Empia switched to a 16-bit addressable eeprom in newer devices. While we
could certainly write a routine to read the eeprom, there is nothing of use
in there that cannot be accessed through registers, and there is the risk that
we could corrupt the eeprom (since a 16-bit read call is interpreted as a
write call by 8-bit eeproms). So just be safe and bail out of the function.
Thanks for Ray Lu from Empia for providing the em2874 datasheet.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Empia moved the location of the GPIO/GPO registers in newer devices. Add the
ability to specify the relocated registers (including caching of register
contents).
Thanks for Ray Lu from Empia for providing the em2874 datasheet.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
When setting up the device, remember the chip id, so we can control behavior
in the future without having to read the register continuously.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add a EM28XX_NODECODER option to the list of available decoders. This option
becomes important for devices that do not have analog support.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Add em2874 chip id
Add chip id for em2874 to list of known chips
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch is part of a larger patch series which will remove
the "char bus_id[20]" name string from struct device. The device
name is managed in the kobject anyway, and without any size
limitation, and just needlessly copied into "struct device".
To set and read the device name dev_name(dev) and dev_set_name(dev)
must be used. If your code uses static kobjects, which it shouldn't
do, "const char *init_name" can be used to statically provide the
name the registered device should have. At registration time, the
init_name field is cleared, to enforce the use of dev_name(dev) to
access the device name at a later time.
We need to get rid of all occurrences of bus_id in the entire tree
to be able to enable the new interface. Please apply this patch,
and possibly convert any remaining remaining occurrences of bus_id.
We want to submit a patch to -next, which will remove bus_id from
"struct device", to find the remaining pieces to convert, and finally
switch over to the new api, which will remove the 20 bytes array
and does no longer have a size limitation.
Thanks,
Kay
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix a NULL pointer dereference that would occur if the video decoder tied to
the em28xx supports the VIDIOC_INT_RESET call (for example: the cx25840 driver)
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
commit 50f3beb50a fixed em28xx-alsa
locking schema. However, a backport macro was kept.
This patch removes the macro, since it is not needed for the module
compilation against upstream.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Replaced usb_kill_usb for usb_unlink_usb
(wait until urb to fully stop require USB core to put the calling process to sleep).
Oops:
http://www.kerneloops.org/raw.php?rawid=71799&msgid=
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Newer versions of hald tries to open it to call QUERYCAP.
Due to the lack of a proper locking, it is possible to open the device
before it finishes initialization.
This patch adds a lock to avoid this risk, and to protect the list of
em28xx devices.
While here, remove the uneeded BKL lock.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Now that we have a polling task for IR, there's a race condition, since
IR can be polling while other operations are being doing. Also, we are
now sharing the same urb_buf for both read and write control urb
operations. So, we need a mutex.
Thanks to Davin Heitmueller <devin.heitmueller@gmail.com> for warning me.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Before this patch, every register setup on em28xx were dynamically
allocating a temporary buffer for control URB's to be handled.
To avoid this ping-pong, use, instead a pre-allocated buffer.
Also, be sure that read control URB's also use the buffer, instead of
relying on a stack buffer.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
em28xx_init_dev() has some error conditions that are not properly
de-allocating dev var, nor freeing the device number for a future usage.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The attached patch makes the em28xx auxillary audio input work.
Tested with the HVR-950.
em28xx: make auxillary audio input work
The tuner audio input was working but the aux input wasn't. Tested with
the HVR-950.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The kernel number of a v4l2 node (e.g. videoX, radioX or vbiX) is now
independent of the minor number. So instead of using the minor field
of the video_device struct one has to use the num field: this always
contains the kernel number of the device node.
I forgot about this when I did the v4l2 core change, so this patch
converts all drivers that use it in one go. Luckily the change is
trivial.
Cc: michael@mihu.de
Cc: mchehab@infradead.org
Cc: corbet@lwn.net
Cc: luca.risolia@studio.unibo.it
Cc: isely@pobox.com
Cc: pe1rxq@amsat.org
Cc: royale@zerezo.com
Cc: mkrufky@linuxtv.org
Cc: stoth@linuxtv.org
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
In dvb_init(),
case EM2880_BOARD_TERRATEC_HYBRID_XS:
case EM2880_BOARD_KWORLD_DVB_310U:
can be put in the same case than EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900
since they do the same thing.
Signed-off-by: Thierry MERLE <thierry.merle@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The v4l core creates four different video devices (video, vbi, radio, vtx)
and each has its own range of minor numbers. However, modern devices keep
increasing the number of devices that they need so a maximum of 64 video
devices will not be enough in the future. In addition this scheme makes
it very hard to add new device types.
This patch disconnects the kernel number allocation (e.g. video0, video1,
etc.) from the actual minor number (just pick the first free minor).
This allows for much more flexibility in the future. However, it does
require the use of udev. For those who cannot use udev a new CONFIG option
was created that changes the allocation scheme back to the old behavior.
Thanks to Greg KH for suggesting this approach during the 2008 LPC.
In addition, several bugs were fixed in the ivtv and cx18 drivers: these
drivers try to allocate specific kernel numbers but that scheme contained
a bug which caused what should have been e.g. video17 to appear as e.g.
video2.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fixed and Added some validations
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Added vendor/product id for EM2820_BOARD_PROLINK_PLAYTV_USB2
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix sparse warnings. None are serious, but cutting down on these helps find
future serious sparse warnings/errors.
Redid the av7710.c patch based on a suggestion by Oliver Endriss.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The BKL is now moved from the video_open function in v4l2-dev.c to the
various drivers. It seems about a third of the drivers already has a
lock of some sort protecting the open(), another third uses
video_exclusive_open (yuck!) and the last third required adding the
BKL in their open function.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fixed audio clicking problem which could be heard when using analog tv or composite input
Signed-off-by: Wiktor Grebla <greblus@gmail.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Correct firmware type to MTS
Correct audio routing for composite/s-video
Add DVB-T detection.
This patch uses the eeprom hash method for detection as the vendor/product
ids are also used for the DIGIVOX_AD. This may be a clone of the same
product. Explanatory text has been added prior to the hask look-up in
anticipation that it may help others.
The following has been tested to work:
Analogue TV (PAL-I)
Composite In
DVB-T (UK Crystal Palace)
USB AUDIO
The following has not been tested but probably works:
S-Video In
Signed-off-by: Darron Broad <darron@kewl.org>
Signed-off-by: Douglas Schilling Landgraf <dougsland@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The AMD ATI TV Wonder 600 has an XC3028L and *not* an XC3028, so we need to
load the proper firmware to prevent the device from overheating.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Pinnacle Hybrid Pro (2304:0226) requires mts_firmware flag to have any
sound. Without this flag it is useful only for watching silent movies.
Signed-off-by: Eugeniy Meshcheryakov <eugen@debian.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
There are two videomate boards supporded by em28xx. The names are almost
identical.
This patch renames one of such entries to something else.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- New supported IDs for analog models
(Based on Markus Rechberger <mrechberger@gmail.com> version of em28xx driver)
- Validation field for new em28xx boards.
Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com>
[mchehab@infradead.org: Need to fix some merge conflicts]
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The type and type2 fields were unused and so could be removed.
Instead add a vfl_type field that contains the type of the video
device.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-cards.c
em28xx-dvb.c
em28xx.h
- Add support for the ATI TV Wonder HD 600, based on a 94 email exchange and
USB traces provided by Ronnie Bailey
Thanks to Ronnie Bailey <purevw@wtxs.net> for testing the changes
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch adds dvbt support for the terratec cinergy hybrid T usb xsstick.
Thanks to Devin Heitmueller and Mauro Chehab for guiding me.
Signed-off-by: Reinhard Schwab <reinhard.schwab@aon.at>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
All ioctl callbacks are now stored in a new v4l2_ioctl_ops struct. Drivers fill in
a const struct v4l2_ioctl_ops and video_device just contains a const pointer to it.
This ensures a clean separation between the const ops struct and the non-const
video_device struct.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Converted the last users of audiochip.h to the v4l2-chip-ident.h header
and remove the now unused audiochip.h header.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The functions in a header should not belong to another module. The prio functions
belong to v4l2-common.c, so move them to v4l2-common.h.
The ioctl functions belong to v4l2-ioctl.c, so create a new v4l2-ioctl.h header
and move those functions to it.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The field 'dev' is not the video device, but the parent of the video device.
Rename accordingly.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Also remove some blank lines that were used to split compat code at -devel
tree.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-cards.c
em28xx-input.c
em28xx-video.c
em28xx.h
- Add support for the PointNix Intra-Oral Camera, which required addition of
a construct for reading the "snapshot" button (provided on the em2860 and
em2880 chips, but this is the first case where I have seen it actually used
in a product). The button is wired to pin 56 on the em2880.
http://www.pointnix.com/ENG/dental/product_02.asp
Thanks to Roberto Mantovani <rmantovani@libero.it> for testing the changes
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- Separate the newer variant of the HVR-900 into its own device profile
because it has a Micronas DRX397 instead of the Zarlink demod. This
doesn't make the device work, but at least we don't try to initialize it
as though it had the Zarlink device.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
[mchehab@infradead.org: avoid compilation breakage at mainstream, where drx397xD.h doesn't exist yet]
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The naming for the callbacks that handle the VIDIOC_ENUM_FMT and
VIDIOC_S/G/TRY_FMT ioctls was very confusing. Renamed it to match
the v4l2_buf_type name.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-audio.c
em28xx-dvb.c
- Em28xx extensions should ensure they are being only loaded against devices
that support them. Deals with case where there are multiple em28xx
devices, some of which have DVB (or ALSA) support and some do not.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-cards.c
- DVB support is supposed to be enabled for the first generation HVR-900.
This device was confirmed with DVB by mkrufky when we did the original work
in April, but I guess we forgot to set the flag.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-video.c
- Properly handle loading of the module when multiple devices are already
connected (such as at bootup). Before we were only calling dvb_init()
against the last device in the list, so while we were handling subsequent
adds properly, if there were multiple devices present on driver load,
everybody except the last device would not get initialized.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-dvb doesn't need FW_LOADER. Instead, tuner-xc2028 needs to select
FW_LOADER.
Also, this can happen only if HOTPLUG is selected, since FW_LOADER
is dependent on HOTPLUG.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
VIDEO_TUNER is responsible for compilation of tuners.ko module. This were the
previous behaviour before the creation of MEDIA_TUNER.
Before this patch, tuner.ko were created even for drivers that don't need a
tuner (like webcam drivers).
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
There were several issues in the past, caused by the hybrid tuner design, since
now, the same tuner can be used by drivers/media/dvb and drivers/media/video.
Kconfig items were rearranged, to split V4L/DVB core from their drivers.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Fixes a copy and paste error in check of kzalloc return value. The check block
was copied from the previous allocation but the variable wasn't exchanged.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-core.c
- Drop the severity level of the "urb resubmit failed" to debug, since it
occurs every time a stream disconnects, which fills the dmesg log
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The driver should be switched to digital mode, when trying to access the
frontend or when streaming.
This patch provides the correct code to support this feature.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Before this patch, HVR900/HVR950 were incorreclty going back to analog. The
result is that only digital were working.
This patch provides the proper setup for analog/digital and tuner callback.
It also properly resets analog into a sane state at open().
Thanks to Steven Toth <stoth@linuxtv.org> and Michael Krufky <mkrufky@linuxtv.org>
for helping to set the proper parameters to GPO/GPIO em2883 ports.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Now, all registers will follow the same convension:
EM28XX_R<reg_number>_<reg_name>
This allows to associate a register with its value, and also with a canonical
name. Also, registers that are specific to a given chip were renamed accordingly,
as EM2800_foo (for 2800 only registers) or EM2880_foo (for registers that started
to appear on em2880).
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Before this patch, registers 0x04 and 0x08 were referenced by its value. This is
bad, since makes harder for someone to understand what this is doing.
This patch renames those two registers into an appropriate name.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx.h contains lots of different stuff inside. The better is to break it on
some files.
This patch removes the register names, moving them to a separate file.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This is more conservative than just removing the msleep() from
em28xx_write_regs_req(), since some old hardware may still need it.
So, it will remove the sleep time only for those chips where this
removal were tested.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-core.c:
- Remove sleep in i2c message routine which slows down i2c by a factor
10x. Load time for BASE firmware went from 13s to .973s
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-dvb.c:
- Remove unneeded xc3028_ctrl structure. The driver automatically preserves
the previous value
tuner-xc2028.c:
- Make the return type for xc2028_get_reg signed, since all of the callers
are looking for "< 0" to detect errors.
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Modifies em28xx-dvb not to use videobuf-dvb, but instead to include the code
for registering dvb devices locally and use the URB management code in the
em28xx driver directly. DVB data streaming should now work.
Signed-off-by: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Move the URB setup and management code to em28xx-core.c and generalise
it slighlty so that the DVB code can use it.
Signed-off-by: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-cards.c:
- Fix reversed val/rst values in both analog_gpio and digital_gpio
vectors
- Fix crash that would was occurring during every analog startup
while looping over gpio_ctl
- Remove what appears to be a redundant setting of gpio_ctl->val
- Don't use OREN538 demodulation for the HVR-950 (prevents ATSC
scanning from working)
em28xx-dvb.c:
- Tuner should be in digital mode when issuing the reset
- Add copyright
- Change struct definition (corresponds to fix in em28xx-cards.c for
gpio_ctl looping)
Signed-off-by: Devin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Thanks to Devin Heitmueller <devin.heitmueller@gmail.com> and Aidan
Thornton" <makosoft@googlemail.com> for pointing some errors with the
previous scenario.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch adds DVB support for Hauppauge HVR950.
Thanks to Michael Krufky <mkrufky@linuxtv.org> for getting those values.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx based devices with xc3028 may require some specific gpio values.
This patch adds a generic handling for such values.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch adds em28xx-dvb. This driver is highly based on cx88-dvb and
saa7134-dvb.
This code currently loads and unloads successfully. However, some
changes are needed to properly support the mpeg streams and to setup
em28xx to work on DVB mode.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Removes some fields from data structs.
There are some fields that are just caching some calculus for buffer
size. The calculus were moved to the places it were needed and the now
unused fields were removed.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch fixes three related issues and a fourth trivial one:
- Use buffers even if no-one's currently waiting for them (fixes
underrun issues);
- Don't return incomplete/mangled frames at the start of streaming and
in the case of buffer underruns;
- Fix an issue which could cause the driver to write to a buffer that's
been freed after videobuf_queue_cancel is called (exposed by the
previous two fixes - for some reason, ignoring buffers that weren't
being waited on worked around the issue);
- Fix a bug which could cause only one field to be filled in the first
buffer (or first few buffers) after streaming is started.
Signed-off-by: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
There are some cases where nobody is waiting for a buffer. Due to the
lack of check, if you try to abort the userspace app, machine were
hanging, since IRQ were trying to use a buffer that were disallocated.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Currently, vidioc_s_fmt_cap is allowed even if streaming is running on some
other fh. This is likely to cause issues.
Block use of vidioc_s_fmt_cap if someone else has claimed access to the device.
Signed-off-by: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
I did notice a possible memory leak since iolock is could possibly be
called before a buffer has been freed.
This ensure s_fmt isn't called while the queue is busy thereby avoiding
iolock on already allocated buffers.
Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- Remove dead code;
- Fix a few CodingStyle issues;
- Prints frame number, if debug is enabled.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- Aborting buffer_filled if no-one's waiting on the waitqueue probably isn't
what we want, since just because no-one's waiting for it now doesn't mean they
wouldn't dequeue it in time. (vivi gets away with this, possibly because it
can fill each buffer much faster.)
- The first BUG_ON(lencopy <= 0); really isn't worth causing a kernel panic
over, especially since there are some reasons why it could trigger in normal use.
- The top and botom frames are actually the wrong way around.
Signed-off-by: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The last videobuf changes introduced several CodingStyle errors. Fixes all those
errors, as reported by checkpatch.pl
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
It fixes a couple of minor bugs, comments out a bogus BUG_ON, sets fh->type
correctly, uses dev->width and dev->height for now, and adds a missing spinlock
init (nasty - caused a system lockup). It also adds some debug code which
probably isn't all that useful. I haven't tested this version of the patch yet,
though, so I'm not sure what you can expect if you try it.
Signed-off-by: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The usage of videobuf-vmalloc allows to cleanup em28xx logic.
Also, it reduced its size by about 5.42% on i386 arch (and about 7.5% on x86_64):
39113 4876 40 44029 abfd old/em28xx.ko
36731 4868 40 41639 a2a7 /home/v4l/master/v4l/em28xx.ko
Also, the preliminary tests, made on a single core 1.5 MHz Centrino showed
that CPU usage reduced from 42%-75% to 28%-33% (reports from "top") command.
A test with time command presented an even better result:
This is the performance tests I did, running code_example to get 1,000 frames
@29.995 Hz (about 35 seconds of stream), tested on a i386 machine, running at
1,5GHz:
The old driver:
$ time -f "%E: %Us User time, %Ss Kernel time, %P CPU used" ./capture_example
0:34.21: 8.22s User time, 25.16s Kernel time, 97% CPU used
The videobuf-based driver:
$ time -f "%E: %Us User time, %Ss Kernel time, %P CPU used" ./capture_example
0:35.36: 0.01s User time, 0.05s Kernel time, 0% CPU used
Conclusion:
The time consumption to receive the stream where reduced from about 33.38
seconds to 0.05 seconds.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
__FUNCTION__ is gcc-specific, use __func__
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
TUNER_PHILIPS_ATSC is an ambiguous name for a tuner. Rename it to
TUNER_PHILIPS_FCV1236D to be more descriptive.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
- Static memory is always initialized with 0.
- Replaced in some cases C99 comments for /* */
Signed-off-by: Douglas Schilling Landgraf <dougsland@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
In commit e6bafba5b4, a bug was fixed that
involved converting !x & y to !(x & y). The code below shows the same
pattern, and thus should perhaps be fixed in the same way.
This is not tested and clearly changes the semantics, so it is only
something to consider.
The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@ expression E1,E2; @@
(
!E1 & !E2
|
- !E1 & E2
+ !(E1 & E2)
)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx driver is capable of handling more than one usb device. However, isoc
transfers require a large amount of data to be transfered.
Before this patch, just one em28xx board were enough to allocate more than 50%
URBs:
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 8
B: Alloc=480/800 us (60%), #Int= 0, #Iso= 2
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
So, only one board could use an USB host at the same time. After the patch, it
is possible to use more than one em28xx at the same time, on the same usb host,
if the image size is slower or equal to 345600, since those images will
require about 30% of the URBs:
T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 8
B: Alloc=232/800 us (29%), #Int= 0, #Iso= 2
D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1
So, in thesis, after the patch, it would be possible to use up to 3 boards by
each usb host, if the devices are generating small images.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Improves audio configurations on em28xx:
- mutes audio before changing amux;
- adds a delay after setting audio src;
- waits up to 50ms for ac97 busy.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
drivers/media/video/em28xx/em28xx-core.c: In function 'em28xx_set_audio_source':
drivers/media/video/em28xx/em28xx-core.c:276: warning: 'no_ac97' may be used uninitialized in this function
This looks like a genuine bug to me.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch makes the following needlessly global functions static:
- em28xx-core.c:em28xx_write_reg_bits()
- em28xx-video.c:em28xx_vdev_init()
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
has_tuner flag doesn't make much sense, since tuner_type=TUNER_ABSENT
means the same thing.
Having two ways to say that a tuner is not present is
not nice, since it may lead to bad setups. In fact, with the previous
code, if a device were using has_tuner=0, but the user forces a tuner,
with modprobe option tuner=type, the modprobe option won't work.
Also, tveeprom returns TUNER_ABSENT, when tuner is unknown or absent.
So, with the previous logic, in this case, the driver should set
has_tuner=0, or has_tuner=1 otherwise.
Instead of adding several additional tests and setups, better just to
remove .has_tuner.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Before this patch, only Vendor Class audio support were loaded. This means that
older em28xx devices won't have digital audio support loaded.
This patch changes the logic to auto load eighter snd-usb-audio, for devices
with USB Audio Class or em28xx-alsa, for devices with USB Vendor Class.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Only HVR950 has analog_gpio configured. It makes no sense to set gpio to 0 for
other boards. Better to add a test, while this var is not set for all xc3028
devices.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Older em28xx devices does implement standard Audio Class.
However, on newer devices, this were replaced by a Vendor Class. This
patch autodetects that an em28xx lacks Audio Class and auto-loads
em28xx-alsa, for the devices that implements only a Vendor Class.
For devices with Audio Class, snd-usb-audio module will provide an ALSA
interface.
This patch uses the request_module_async function as defined on cx88-mpeg.c,
originally wrote by Markus Rechberger.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
em28xx-audio module exports em28xx Vendor Class audio as an -alsa
driver. This module were written based on usbaudio driver by Markus
Rechberger. Recently, he acked to allow us to merge it on kernel:
http://lists-archives.org/video4linux/20408-supporting-prolink-pixelview-405-dvd-maker.html
Thanks to Markus Rechberger <mrechberger@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Thanks to Markus Rechberger <mrechberger@gmail.com> for retriving those
commands.
Also, MTS firmware is required for audio to work on HVR950.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
It is possible to select audio inputs via em28xx or via ac97 functions.
This patch allows configuring a board to use either one way.
It also do some cleanups at audio setup configurations.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The patch below adds the "Pinnacle Dazzle DVC 100" to the list of
cards supported by the em28xx driver. As the configuration is the same
as the DVC 90 one, it simply adds a new USB ID to the list of devices
supported by the DVC 90 configuration.
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Xc2028.3028 has two type of firmwares: audio-standard specific ones and
baseband MTS firmwares. MTS firmwares provide stereo decoding for 6 MHz
BTSC/EIAJ and for monoaural audio decoding on 8 MHz firmwares.
It seems that the option to use MTS or a standard-specific audio decoding
depends on the way xc2028/3028 is connected.
Instead of wasting 32 (or 64 bits) to signalize if the driver needs to use MTS
firmware, this patch converts it to a bitfield that can be shared with other
proprieties of xc2028/3028.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The HVR-900 requires the MTS version of the xc3028 firmware in order
to get any sound. The below patch selects this firmware variant on
HVR-900 cards, as well as splitting the HVR-950 into its own entry
(since I don't know if it uses the MTS variant and it will have to be
split off eventually anyway).
Signed-off-by: Aidan Thornton <makosoft@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
With the conversion to the vidio_ioctl2, tvnorms array is not required anymore.
Also, removed some code from V4L1 time (VIDEO_MODE_foo), specied at the
non-used video_decoder.h.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
There were some vestiges of an old V4L1 I2C driver that were called by em28xx.
This patch removes this dead code, and replaces videodev.h to videodev2.h
Now, this driver doesn't require V4L1 anymore.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Uses the newer ioctl handler at videodev. This patch also cleans up some
bad logic at the driver and do CodingStyle and other cleanups at the
resulting driver.
Also, since VIDIOCMBUF were not working, the V4L1 compat code were removed.
The compat code will eventually be re-inserted, if we find a clean way for
implementing compatibility with the old API.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
On some situations, closing an streaming application and re-opening were
returning -EBUSY.
Uses the same locking schema also present on cx88.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Allows shared access support for em28xx. Just one userspace application is
allowed to get stream. The other(s) application(s) can change V4L2 controls,
set video standards, etc.
This patch were splited from Markus Rechberger's tree and backported to 2.6.17
by Pádraig Brady.
The original patch were ported to the latest em28xx version and had CodingStyle
corrected to solve the issues pointed by scripts/checkpatch.pl.
Thanks to Pádraig Brady <P@draigBrady.com> for pointing this.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Hauppauge firmwares can be decoded using tveeprom. This patch adds HVR-900 as
a tveeprom client. It also adds xc3028 tuner entry to tveeprom.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
From: Mauro Carvalho Chehab <mchehab@infradead.org>
In file included from drivers/media/video/em28xx/em28xx-i2c.c:31:
drivers/media/video/tuner-xc2028.h:10:26: error: dvb_frontend.h: No such file or directory
In file included from drivers/media/video/em28xx/em28xx-i2c.c:31:
drivers/media/video/tuner-xc2028.h:32: warning: 'struct dvb_frontend' declared inside parameter list
drivers/media/video/tuner-xc2028.h:32: warning: its scope is only this definition or declaration, which is probably not what you want
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Adds autodetection support for the Cinergy200 USB and the VGear PocketTV.
Whenever a usb device with generic empia em2800 usb ids is detected the device
gets scanned for connected i2c devices. If the device list matches an em2800
device in the device list the model id gets changed accordingly.
Signed-off-by: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
attached patch adds support for the vgear pockettv.
It seems to require a write to another register for audio to work.
I checked my old cinergydrv and we did the same register write there. I
therefore enabled it for all em2800 based devices.
Signed-off-by: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The attached patch modifies the em28xx driver so that there can be ioctls from
multiple different threads.
This is necessary for capture apps like MPlayer that use different threads for
capturing and channel tuning.
Now the locking is only done for the ioctls that change properties of the
device or access the i2c bus.
It also removes some locks that look unnecessary:
In em28xx_init_dev:
the videodevice is not registered yet so nothing can access the hardware
meanwhile, the device struct is not assigned to the interface yet so no race
with disconnect is possible
In em28xx_release_resources:
it gets only called when dev->lock is already held
Signed-off-by: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch adds a function to allow trying to detect boards that shares
the generic IDs.
The current detection method is based at eeprom checksum.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This patch adds USB ID for HVR-950. It also adds the callback for handling
firmware loading.
Thanks to Markus Reichberger for the reset commands.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Also replaces all occurrences of TUNER_XCEIVE_XC3028 to TUNER_XC2028.
Some work is still may be required to make sure that non-tm6000 drivers will
be capable of using tuner-xc2028.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Currently, the only tuner-specific device that allows special
configurations is tda9887. However, tea5767 also may require some
special configurations (for example, to specify a different Xtal freq).
This patch replaces TDA9887_SET_CONFIG by a more generic internal ioctl
(TUNER_SET_CONFIG). The newer one allows specifying what tuner is
appliable to a configuration set, and allows an arbitrary configuration
struct.
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
The attached patch is required so that the autodetecion code also works after
a reboot.
Setting the I2C speed does not seem to be supported for em2800.
Signed-off-by: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This em28xx-video.c uses functions from this header, but doesn't include it.
It depends on some v4l headers included two levels down including poll.h,
which includes mm.h.
These v4l headers might change, so it's best to include the headers needed
directly.
It also causes problems for the out of core build system's backward
compatibility with older kernels, which is the real reason I bothered to
create a patch for something that would otherwise be so minor that it would
hardly be worth the trouble.
Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
