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RE: [PATCH 4/7] pwm: Align existing pwm drivers with pwm-core driver

To: Lars-Peter Clausen <lars@metafoo.de>
Subject: RE: [PATCH 4/7] pwm: Align existing pwm drivers with pwm-core driver
From: Arun MURTHY <arun.murthy@stericsson.com>
Date: Tue, 28 Sep 2010 11:26:59 +0200
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In-reply-to: <4CA1AE21.8070306@metafoo.de>
References: <1285659648-21409-1-git-send-email-arun.murthy@stericsson.com> <1285659648-21409-5-git-send-email-arun.murthy@stericsson.com> <4CA1AE21.8070306@metafoo.de>
Sender: linux-mips-bounce@linux-mips.org
Thread-index: Acte61tsF5aNwHgNRsyYLqPwiibNcQAAsuRQ
Thread-topic: [PATCH 4/7] pwm: Align existing pwm drivers with pwm-core driver
> > mips-jz4740: pwm: Align with new pwm core driver
> >
> > PWM core driver has been added and has been enabled only for ARM
> > platform. The same can be utilised for mips also.
> > Please align with the pwm core driver(drivers/pwm-core.c).
> 
> 
> Is there any reason for artificially limiting it to ARM?

No not at all, right now I have aligned all existing pwm drivers in ARM to make 
use of the pwm core driver.
But faced difficulty in aligning the mips-jz4740 pwm driver, without having 
much knowledge about the device/data sheet.
Hence I have let it to the maintainer of that driver to align and thereafter 
this limitation will be removed.
Have also comments the same as TODO in the driver.

> > diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig
> > index 5d10106..a88640c 100644
> > --- a/drivers/pwm/Kconfig
> > +++ b/drivers/pwm/Kconfig
> > @@ -4,6 +4,7 @@
> >
> >  menuconfig PWM_DEVICES
> >     bool "PWM devices"
> > +   depends on ARM
> >     default y
> >     ---help---
> >       Say Y here to get to see options for device drivers from
> various
> > diff --git a/drivers/pwm/pwm-core.c b/drivers/pwm/pwm-core.c
> > index b84027a..3a0d426 100644
> 
> 
> 
> Why can't these changes be in the initial patch which adds pwm-core?
> 
Since by default this driver is enabled, and if there is some other pwm driver 
enabled, both happen to export the same function(pwm_enable/pwm_disable,..) 
After applying the first patch build may fail.

Thanks and Regards,
Arun R Murthy
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