V4L/DVB (5427): M920x: Improve I2C operations

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Write some better documentation about what might be known about how the
m920x I2C works, since a datasheet is lacking.
The I2C xfer function should now handle more types of I2C transactions
than it could before.  Those it can't, will return error codes instead of
being executed incorrectly.  Multi-byte reads were not being done
correctly, which should be fixed.

Signed-off-by: Trent Piepho <xyzzy@speakeasy.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

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Trent Piepho 2007-03-05 23:55:00 -03:00 • committed by Mauro Carvalho Chehab

parent 634bc48da7

commit d40860f8e2

2 changed files with 47 additions and 33 deletions

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52

drivers/media/dvb/dvb-usb/m920x.c

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28

drivers/media/dvb/dvb-usb/m920x.h

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