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

namespace for all of them.

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

Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

Thanks to Aidan Thornton <makosoft@googlemail.com> for helping
to test this firmware
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

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

The setup is already done at open().
Signed-off-by: NMauro 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: 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>

Those printk's were adding more info to a line that were already being
printed.
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>

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: 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>

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

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>

Adds the correct GPIOs and demod attach code for the HVR-900
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

This will make tuner-xc2028 to change to analog, if needed.
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>

This patch adds DVB support for Hauppauge HVR950.

Thanks to Michael Krufky <mkrufky@linuxtv.org> for getting those values.
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>

Some devices have msp3400 audio decoder chip. Selects it, if em28xx.
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>

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: NMauro Carvalho Chehab <mchehab@infradead.org>

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

Signed-off-by: NMauro 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: NAidan Thornton <makosoft@googlemail.com>
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>