[PATCH] rtc/tpo: Driver to support rtc and wakeup on PowerNV platform

[Michael Ellerman]

On Wed, 2014-09-10 at 11:08 +0530, Neelesh Gupta wrote:
> The patch implements the OPAL rtc driver that binds with the rtc
> driver subsystem. The driver uses the platform device infrastructure
> to probe the rtc device and register it to rtc class framework. The
> 'wakeup' is supported depending upon the property 'has-tpo' present
> in the OF node. It provides a way to load the generic rtc driver in
> in the absence of an OPAL driver.
> 
> The patch also moves the existing OPAL rtc get/set time interfaces to the
> new driver and exposes the necessary OPAL calls using EXPORT_SYMBOL_GPL.
> 
> Signed-off-by: Neelesh Gupta <neelegup at linux.vnet.ibm.com>
> ---
> 
> Note:
> This patch depends upon the below patch posted on 'linuxppc-dev at lists.ozlabs.org'
> [PATCH 1/4] powerpc/powernv: Add OPAL check token call
> Signed-off-by: Michael Neuling <mikey at neuling.org>
> 
>  arch/powerpc/include/asm/opal.h                |    7 -
>  arch/powerpc/kernel/time.c                     |    1 
>  arch/powerpc/platforms/powernv/opal-async.c    |    3 
>  arch/powerpc/platforms/powernv/opal-rtc.c      |   63 ++----
>  arch/powerpc/platforms/powernv/opal-wrappers.S |    2 
>  arch/powerpc/platforms/powernv/opal.c          |    6 +
>  arch/powerpc/platforms/powernv/setup.c         |    2 
>  drivers/rtc/Kconfig                            |   11 +
>  drivers/rtc/Makefile                           |    1 
>  drivers/rtc/rtc-opal.c                         |  257 ++++++++++++++++++++++++
>  10 files changed, 305 insertions(+), 48 deletions(-)
>  create mode 100644 drivers/rtc/rtc-opal.c


Alessandro, given this depends on other things in the powerpc tree do you mind
if we take this through the powerpc tree with your Ack?

Or I can create a topic branch with the required powerpc changes.

cheers