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If the I2C device provides an interrupt it is registered and the
standard
is updated via interrupts rather than polling.
Since I2C communication is needed, the interrupt handler fires off a
work which will check the new standard, and store it in the internal
structure.
To handle mutual exclusion a mutex is introduced.
Signed-off-by: Richard Röjfors <richard.rojfors@mocean-labs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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This patch defines the probe and remove function as __devinit and __devexit.
Signed-off-by: Richard Röjfors <richard.rojfors@mocean-labs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Support for settings the input standard of the ADV7180.
When the input standard is set there is no use to ask the
chip for standard, therefore it is cached in the driver.
Signed-off-by: Richard Röjfors <richard.rojfors@mocean-labs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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This patch adds support to the ADV7180 driver to check the input
status.
Since the status is held in the same register as the input standard
a small restructuring of the code is done to reuse the code for
reading the register
Signed-off-by: Richard Röjfors <richard.rojfors@mocean-labs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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This is an initial driver for Analog Devices ADV7180 Video Decoder.
So far it only supports query standard.
[akpm@linux-foundation.org: remove unneeded cast]
Cc: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Richard Röjfors <richard.rojfors.ext@mocean-labs.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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