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: NDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NMauro 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: NDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: NMauro 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: NMauro 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: NDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: NMauro 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: NDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: NMauro 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: NDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: NMauro 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: NDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: NMauro 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: NDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: NMauro 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: NMauro 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: NMauro Carvalho Chehab <mchehab@redhat.com>

Signed-off-by: NMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: NMauro 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: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

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: NMauro Carvalho Chehab <mchehab@infradead.org>

Thanks to "Devin Heitmueller" <devin.heitmueller@gmail.com> for pointing this
issue.
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Added Compro VideoMate ForYou/Stereo model (analog only)
Signed-off-by: NVitaly Wool <vital@embeddedalley.com>
[dougsland@gmail.com: Solved conflicts with v4l-dvb devel tree]
Signed-off-by: NDouglas Schilling Landgraf <dougsland@gmail.com>
[mchehab@infradead.org: Need to fix some merge conflicts]
Signed-off-by: NMauro 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: NDouglas Schilling Landgraf <dougsland@gmail.com>
[mchehab@infradead.org: Need to fix some merge conflicts]
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Added GrabBeeX+ USB2800 model (analog only)

[mchehab@infradead.org: Need to fix some merge conflicts]
Signed-off-by: NAron Szabo <aron@aron.ws>
Signed-off-by: NDouglas Schilling Landgraf <dougsland@gmail.com>
Signed-off-by: NMauro 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: NMauro 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: NDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: NMauro 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: NDevin Heitmueller <devin.heitmueller@gmail.com>
[mchehab@infradead.org: avoid compilation breakage at mainstream, where drx397xD.h doesn't exist yet]
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: NDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: NMauro 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: NMauro 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: NMauro 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: NMauro 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: NMauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: NDouglas Schilling Landgraf <dougsland@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

The analog entries are wrong. Fix it.
Signed-off-by: NMauro 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: NAidan Thornton <makosoft@googlemail.com>
Signed-off-by: NMauro 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: NAidan Thornton <makosoft@googlemail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Thanks to Devin Heitmueller <devin.heitmueller@gmail.com> for pointing
this issue.
Signed-off-by: NMauro 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: NDevin Heitmueller <devin.heitmueller@gmail.com>
Signed-off-by: NMauro 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: NMauro 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: NMauro 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: NMauro 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: NMauro 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: NAidan Thornton <makosoft@googlemail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

It seems that we don't need a timeout for em28xx.
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>