Re: [PATCH V4 1/2] i2c/adapter: Add bus recovery infrastructure

[Shiraz Hashim <shiraz.hashim-qxv4g6HH51o@public.gmane.org>]

Hi Wolfram,

On Wed, Jun 13, 2012 at 10:03:48AM +0100, viresh kumar wrote:
> On Tue, May 15, 2012 at 7:58 AM, Viresh Kumar <viresh.kumar-qxv4g6HH51o@public.gmane.org> wrote:
> > On 5/4/2012 3:10 PM, Viresh KUMAR wrote:
> >> Add i2c bus recovery infrastructure to i2c adapters as specified in the i2c
> >> protocol Rev. 03 section 3.16 titled "Bus clear".
> >>
> >> http://www.nxp.com/documents/user_manual/UM10204.pdf
> >>
> >> Sometimes during operation i2c bus hangs and we need to give dummy clocks to
> >> slave device to start the transfer again. Now we may have capability in the bus
> >> controller to generate these clocks or platform may have gpio pins which can be
> >> toggled to generate dummy clocks. This patch supports both.
> >>
> >> This patch also adds in generic bus recovery routines gpio or scl line based
> >> which can be used by bus controller. In addition controller driver may provide
> >> its own version of the bus recovery routine.
> >>
> >> Signed-off-by: Viresh Kumar <viresh.kumar-qxv4g6HH51o@public.gmane.org>
> >> ---
> >>  Documentation/i2c/bus-recovery |   87 ++++++++++++++++++++++
> >>  drivers/i2c/i2c-core.c         |  160 ++++++++++++++++++++++++++++++++++++++++
> >>  drivers/i2c/i2c-mux.c          |    9 ++-
> >>  include/linux/i2c.h            |   58 ++++++++++++++
> >>  4 files changed, 313 insertions(+), 1 deletions(-)
> >>  create mode 100644 Documentation/i2c/bus-recovery
> >
> > Hi Wolfram,
> >
> > Any inputs on this patch.
> 
> Ping.

Any chance of this passing through your tree, as we are
dependent on this.

--
regards
Shiraz