[PATCH v6 00/17] Add PWM framework and device tree support

[Hebbar, Gururaja]

On Tue, Apr 10, 2012 at 20:36:23, Thierry Reding wrote:
> This patch series adds very rudimentary device-tree support for PWM
> devices. With all of these patches applied (plus one board-specific
> patch that is not included), I'm able to control the backlight on the
> device I'm working on using the sysfs interface provided by the pwm-bl
> driver and the backlight class.
> 
> This series is based on Sascha Hauer's series of patches[0] to add a
> generic PWM framework. The first patch in this series is taken from
> Sascha's branch, while the second patch enables each PWM chip to provide
> multiple PWM devices (the Blackfin and PXA drivers have been ported to
> the framework for reference). Currently a global namespace is still
> provided to keep backwards-compatibility with the legacy PWM API. In
> order to achieve this, the number of global PWM devices is limited to
> 1024. However, patch 2 introduces per-chip indexing of PWM devices in
> the core and patch 4 adds an API to request a PWM device using a lookup
> table registered by board setup code. They are supposed to eventually
> replace pwm_request() and allow to get rid of the global namespace. The
> device tree support code does not use the global namespace.
> 
..snip..
..snip..

> 
> The whole series is based on the linux-next tree from 20120405. I think
> I've addressed all of the concerns raised in the first five versions. I
> have also pushed this version of the series to the PWM subsystem
> repository[1].
> 
> Thierry
> 
> [0]: http://git.pengutronix.de/?p=imx/linux-2.6.git;a=shortlog;h=refs/heads/pwmlib
> [1]: http://gitorious.org/linux-pwm/linux-pwm/trees/pwm-v6
> 
> Sascha Hauer (4):
>   pwm: Add PWM framework support
>   ARM i.MX: Move i.MX pwm driver to pwm framework
>   ARM Samsung: Move s3c pwm driver to pwm framework
>   ARM vt8500: Move vt8500 pwm driver to pwm framework
> 
> Shawn Guo (1):
>   pwm: add pwm-mxs support
> 
> Simon Que (1):
>   ARM: tegra: Fix PWM clock programming
> 
> Thierry Reding (11):
>   pwm: Allow chips to support multiple PWMs
>   pwm: Add debugfs interface
>   pwm: Add table-based lookup for static mappings
>   pwm: Add device tree support
>   ARM: tegra: Provide clock for only one PWM controller
>   pwm: Add NVIDIA Tegra SoC support
>   pwm: tegra: Add device tree support
>   pwm: Move Blackfin PWM driver to PWM framework
>   pwm: Move PXA PWM driver to PWM framework
>   pwm-backlight: Add rudimentary device tree support
>   pwm: Take over maintainership of the PWM subsystem
> 

I am planning to add PWM support in Linux for TI AM335x SOC. 
I am taking your new PWM framework as reference.

I see a lot of ack's for the patches. I see that you are maintaining these patches in a separate repo.
However, I couldn't find any of these 
patches in the mainline kernel (including recent 3.5-rc2). 
Do you have any plans for pushing this again to mainline kernel. 


Regards, 
Gururaja