On Tue, Jan 19, 2016 at 03:32:43PM +0530, Sricharan R wrote: > The definition of i2c_msg says that > > "If this is the last message in a group, it is followed by a STOP. > Otherwise it is followed by the next @i2c_msg transaction segment, > beginning with a (repeated) START" > > So the expectation is that there is no 'STOP' bit inbetween individual > i2c_msg segments with repeated 'START'. The QUP i2c hardware has no way > to inform that there should not be a 'STOP' at the end of transaction. > The only way to implement this is to coalesce all the i2c_msg in i2c_msgs > in to one transaction and transfer them. Adding the support for the same. > > This is required for some clients like touchscreen which keeps > incrementing counts across individual transfers and 'STOP' bit inbetween > resets the counter, which is not required. > > This patch adds the support in non-dma mode. > > Signed-off-by: Sricharan R <sricharan@xxxxxxxxxxxxxx> > Reviewed-by: Andy Gross <andy.gross@xxxxxxxxxx> > Tested-by: Archit Taneja <architt@xxxxxxxxxxxxxx> > Tested-by: Telkar Nagender <ntelkar@xxxxxxxxxxxxxx> Shortened the commit message and applied to for-next, thanks!
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