From: Thierry Reding <thierry.reding@avionic-design.de>
To: Lars-Peter Clausen <lars@metafoo.de>
Cc: Ralf Baechle <ralf@linux-mips.org>,
linux-mips@linux-mips.org, linux-kernel@vger.kernel.org,
Antony Pavlov <antonynpavlov@gmail.com>,
Maarten ter Huurne <maarten@treewalker.org>
Subject: Re: [PATCH v2 3/3] pwm: Add Ingenic JZ4740 support
Date: Tue, 11 Sep 2012 07:02:11 +0200 [thread overview]
Message-ID: <20120911050211.GA23771@avionic-0098.mockup.avionic-design.de> (raw)
In-Reply-To: <504E60F4.9010309@metafoo.de>
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On Mon, Sep 10, 2012 at 11:51:48PM +0200, Lars-Peter Clausen wrote:
> On 09/10/2012 02:05 PM, Thierry Reding wrote:
> > This commit moves the driver to drivers/pwm and converts it to the new
> > PWM framework.
> >
> > Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
>
> Seems to work, thanks a lot. This one and patch 2:
>
> Acked-by: Lars-Peter Clausen <lars@metafoo.de>
> Tested-by: Lars-Peter Clausen <lars@metafoo.de>
>
> But I noticed a different problem. Some drivers using the pwm API depend on
> HAVE_PWM (e.g. the pwm beeper driver), but the generic PWM framework does not
> select HAVE_PWM, so I couldn't select the pwm beeper driver. Imo the generic
> PWM framework should select HAVE_PWM
Does it also work if you add || PWM to the PWM beeper driver's depends?
I thought I had done something similar for pwm-backlight, but looking at
the logs I didn't. The reason was that it also uses the new APIs
introduced by the PWM subsystem. For pwm-beeper the situation is
different because it only uses the legacy API and therefore can work
with both the legacy and new frameworks.
I think selecting HAVE_PWM won't work properly because it isn't provided
by all architectures. So you might end up with PWM enabled on PowerPC,
which doesn't define HAVE_PWM and will probably give you Kconfig
warnings and will still not let you select pwm-beeper.
Thierry
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next prev parent reply other threads:[~2012-09-11 5:02 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-10 12:05 [PATCH v2 0/3] MIPS: JZ4740: Move PWM driver to PWM framework Thierry Reding
2012-09-10 12:05 ` [PATCH v2 1/3] MIPS: JZ4740: Break circular header dependency Thierry Reding
2012-09-10 12:05 ` [PATCH v2 2/3] MIPS: JZ4740: Export timer API Thierry Reding
2012-09-10 12:05 ` [PATCH v2 3/3] pwm: Add Ingenic JZ4740 support Thierry Reding
2012-09-10 21:51 ` Lars-Peter Clausen
2012-09-11 5:02 ` Thierry Reding [this message]
2012-09-11 17:54 ` Lars-Peter Clausen
2012-09-10 15:20 ` [PATCH v2 0/3] MIPS: JZ4740: Move PWM driver to PWM framework Lars-Peter Clausen
2012-09-10 17:30 ` Thierry Reding
2012-09-11 17:56 ` Lars-Peter Clausen
2012-09-12 15:02 ` Thierry Reding
2012-09-22 7:41 ` Thierry Reding
2012-09-23 13:56 ` Ralf Baechle
2012-09-23 17:12 ` Thierry Reding
2012-09-27 19:48 ` Thierry Reding
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