Subject: [PATCH V7 3/6] i2c: qup: Transfer each i2c_msg in i2c_msgs without a stop bit

From: [email-masked] (Wolfram Sang)
Date: Fri, 12 Feb 2016 19:38:15 +0100

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 <[email-masked]>
> Reviewed-by: Andy Gross <[email-masked]>
> Tested-by: Archit Taneja <[email-masked]>
> Tested-by: Telkar Nagender <[email-masked]>

Shortened the commit message and applied to for-next, thanks!

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