linux-toradex.git/drivers/media/dvb-core, branch v4.4.65

media: dvb_ringbuffer: Add memory barriers

2016-08-20T16:09:18+00:00

commit ca6e6126db5494f18c6c6615060d4d803b528bff upstream.

Implement memory barriers according to Documentation/circular-buffers.txt:
- use smp_store_release() to update ringbuffer read/write pointers
- use smp_load_acquire() to load write pointer on reader side
- use ACCESS_ONCE() to load read pointer on writer side

This fixes data stream corruptions observed e.g. on an ARM Cortex-A9
quad core system with different types (PCI, USB) of DVB tuners.

Signed-off-by: Soeren Moch 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Greg Kroah-Hartman

media: dvb-core: Don't force CAN_INVERSION_AUTO in oneshot mode

2016-03-03T23:07:13+00:00

commit c9d57de6103e343f2d4e04ea8d9e417e10a24da7 upstream.

When in FE_TUNE_MODE_ONESHOT the frontend must report
the actual capabilities so user can take appropriate
action.

With frontends that can't do auto inversion this is done
by dvb-core automatically so CAN_INVERSION_AUTO is valid.

However, when in FE_TUNE_MODE_ONESHOT this is not true.

So only set FE_CAN_INVERSION_AUTO in modes other than
FE_TUNE_MODE_ONESHOT

Signed-off-by: Malcolm Priestley 
Signed-off-by: Mauro Carvalho Chehab 
Signed-off-by: Greg Kroah-Hartman

[media] demux.h: Convert MPEG-TS demux caps to an enum

2015-10-10T13:29:08+00:00

While we can't document #defines, documenting enums are
well supported by kernel-doc. So, convert the bitmap defines
into an enum.

Signed-off-by: Mauro Carvalho Chehab

[media] demux.h: Convert TS filter type into enum

2015-10-10T13:29:07+00:00

The usage of #define at the kABI is fine, but it doesn't
allow adding a proper description. As those defines deserve
a proper documentation, let's convert them into an enum and
document them at device-drivers DocBook.

Signed-off-by: Mauro Carvalho Chehab

[media] DocBook: document typedef dmx_section_cb at demux.h

2015-10-10T13:29:07+00:00

The dvb/kdapi.tmpl has already an extensive documentation about
this callback. Now that we've added function typedefs at kernel-doc,
add such documentation at demux.h, for it to appear at device-drivers
DocBook.

Signed-off-by: Mauro Carvalho Chehab

[media] DocBook: document typedef dmx_ts_cb at demux.h

2015-10-10T13:29:06+00:00

The dvb/kdapi.tmpl has already an extensive documentation about
this callback. Now that we've added function typedefs at kernel-doc,
add such documentation at demux.h, for it to appear at device-drivers
DocBook.

Signed-off-by: Mauro Carvalho Chehab

[media] demux.h: make checkpatch.ph happy

2015-10-10T13:29:04+00:00

There are lots of CodingStyle violations here. Now that we're
touching a log on this header files, adding the documentation
here, make sure that this will follow the Kernel CodingStyle.

Signed-off-by: Mauro Carvalho Chehab

[media] DocBook: document the other structs/enums of demux.h

2015-10-10T13:29:04+00:00

Document the following data types:
	struct dmx_ts_feed
	struct dmx_section_filter
	struct dmx_section_feed
	enum dmx_frontend_source
	struct dmx_frontend

Signed-off-by: Mauro Carvalho Chehab

[media] dvb: Remove unused frontend sources at demux.h and sync doc

2015-10-07T18:57:58+00:00

The DVB core has a provision for other frontend sources, but no
drivers use it. The kdapi.xml contains provision for some other
frontend source types, but it is not in sync with the code.

So, remove the unused types and sync both files.

Signed-off-by: Mauro Carvalho Chehab

[media] dvb: get rid of enum dmx_success

2015-10-06T22:53:02+00:00

This enum is not actually used anymore. The only value used from
the enum is DMX_OK, passed as a parameter on two callbacks.

Yet, this value is not used anywhere. So, just remove it.

Signed-off-by: Mauro Carvalho Chehab