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

On Thu, Jun 14, 2012 at 18:23:29, Thierry Reding wrote:

On Thu, Jun 14, 2012 at 12:47:13PM +0000, Hebbar, Gururaja wrote:

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On Tue, Apr 10, 2012 at 20:36:23, Thierry Reding wrote:

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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.

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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

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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. 

Yes, as a matter of fact I'm in the process of getting the series ready for
inclusion into linux-next. I expect them to go into 3.6.

Thierry

Thanks. Eagerly looking forward to it.

Thanks & Regards, 
Gururaja