linux-toradex.git/drivers/media/dvb/dvb-core, branch v3.2.26

dvb-core: Release semaphore on error path dvb_register_device()

2012-07-25T03:11:11+00:00

commit 82163edcdfa4eb3d74516cc8e9f38dd3d039b67d upstream.

There is a missing "up_write()" here. Semaphore should be released
before returning error value.

Signed-off-by: Santosh Nayak 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Ben Hutchings

Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

2011-10-31T22:42:54+00:00

* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (348 commits)
  [media] pctv452e: Remove bogus code
  [media] adv7175: Make use of media bus pixel codes
  [media] media: vb2: fix incorrect return value
  [media] em28xx: implement VIDIOC_ENUM_FRAMESIZES
  [media] cx23885: Stop the risc video fifo before reconfiguring it
  [media] cx23885: Avoid incorrect error handling and reporting
  [media] cx23885: Avoid stopping the risc engine during buffer timeout
  [media] cx23885: Removed a spurious function cx23885_set_scale()
  [media] cx23885: v4l2 api compliance, set the audioset field correctly
  [media] cx23885: hook the audio selection functions into the main driver
  [media] cx23885: add generic functions for dealing with audio input selection
  [media] cx23885: fixes related to maximum number of inputs and range checking
  [media] cx23885: Initial support for the MPX-885 mini-card
  [media] cx25840: Ensure AUDIO6 and AUDIO7 trigger line-in baseband use
  [media] cx23885: Enable audio line in support from the back panel
  [media] cx23885: Allow the audio mux config to be specified on a per input basis
  [media] cx25840: Enable support for non-tuner LR1/LR2 audio inputs
  [media] cx23885: Name an internal i2c part and declare a bitfield by name
  [media] cx23885: Ensure VBI buffers timeout quickly - bugfix for vbi hangs during streaming
  [media] cx23885: remove channel dump diagnostics when a vbi buffer times out
  ...

Fix up trivial conflicts in drivers/misc/altera-stapl/altera.c (header
file rename vs add)

[media] dvb_frontend: fix compile warning

2011-09-06T17:46:59+00:00

Andreas Oberritter  has looked at this and agreed that it is
safe to remove the 'timeout' variable.

Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

[media] DVB: dvb_frontend: check function pointers on reinitialize

2011-09-04T13:56:08+00:00

Signed-off-by: Andreas Oberritter 
Signed-off-by: Mauro Carvalho Chehab

[media] DVB: dvb_frontend: remove static assignments from dtv_property_cache_sync()

2011-09-03T22:06:58+00:00

  dtv_property_cache_init().
  dtv_property_process_get().
  overwritten with invalid values, leading to partially incorrect
  results when calling FE_GET_PROPERTY.

Signed-off-by: Andreas Oberritter 
Signed-off-by: Mauro Carvalho Chehab

[media] DVB: dvb_frontend: Fix compatibility criteria for satellite receivers

2011-09-03T21:07:18+00:00

  identify a satellite receiver by its 'delivery_system' instead of
  'modulation', which may overlap between different delivery systems.

Signed-off-by: Andreas Oberritter 
Signed-off-by: Mauro Carvalho Chehab

[media] dvb-core, tda18271c2dd: define get_if_frequency() callback

2011-09-03T15:46:33+00:00

Tuners in general convert a high frequency carrier into an Intermediate
Frequency (IF).

Digital tuners like tda18271, xc3028, etc. generally allow changing the IF
frequency, although they generally have recommented settings for the IF.
Analog tuners, have a fixed IF frequency, that depends on the physical
characteristics of some analog components.

For digital tuners, it makes sense to have ways to configure IF,
via the tuner's configuration structure, like what's done inside the
tda18271-fe maps.

The demods need to know what IF is used by the tuner, as it will need
to convert internally from IF into baseband. Currently, the bridge driver
needs to fill a per-demod configuration struct for it, or pass it via
a dvb_attach parameter.

The tda18271 datasheet recommends to use different IF's for different
delivery system types and for different bandwidths.

The DRX-K demod also needs to know the IF frequency in order to work,
just like all other demods. However, as it accepts different delivery
systems (DVB-C and DVB-T), the IF may change if the standard and/or
bandwidth is changed.

So, the usual procedure of passing it via a config struct doesn't work.

One might try to code it as two separate IF frequencies, or even as a
table in function of the delivery system and the bandwidth, but this
will be messy.

So, it is better and simpler to just add a new callback for it and
require the tuners that can be used with MFE frontends like drx-k
to implement a new callback to return the used IF.

Signed-off-by: Mauro Carvalho Chehab 
Acked-by: Antti Palosaari

[media] DVB: dvb_frontend: update locking in dvb_frontend_{add, get_event}

2011-09-03T11:49:07+00:00

  - fepriv->parameters_out isn't protected by events->mtx, so
    move the call to fe->ops.get_frontend out of the locked area.
  - move the assignment of e->status into the locked area.

  - use direct assignment instead of memcpy.

  - use mutex_lock instead of mutex_lock_interruptible, because
    all code paths protected by this mutex won't block.

Signed-off-by: Andreas Oberritter 
Signed-off-by: Mauro Carvalho Chehab

[media] DVB: dvb_frontend: clear stale events on FE_SET_FRONTEND

2011-09-03T11:48:12+00:00

  the first event after an attempt to tune.

Signed-off-by: Andreas Oberritter 
Signed-off-by: Mauro Carvalho Chehab

[media] DVB: dvb_frontend: avoid possible race condition on first event

2011-09-03T11:47:33+00:00

  enqueued before the frontend thread wakes up.

Signed-off-by: Andreas Oberritter 
Signed-off-by: Mauro Carvalho Chehab