[PATCH] input: pwm-beeper: Add devicetree probing support
Dmitry Torokhov
dmitry.torokhov at gmail.com
Tue Sep 25 01:56:39 EST 2012
On Mon, Sep 24, 2012 at 07:55:38AM -0500, Rob Herring wrote:
> On 09/24/2012 02:37 AM, Sascha Hauer wrote:
> > A very simple binding, the only property is the phandle to the PWM.
> >
> > Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
>
> Acked-by: Rob Herring <rob.herring at calxeda.com>
>
> > ---
> > Documentation/devicetree/bindings/input/pwm-beeper.txt | 7 +++++++
> > drivers/input/misc/pwm-beeper.c | 11 ++++++++++-
> > 2 files changed, 17 insertions(+), 1 deletion(-)
> > create mode 100644 Documentation/devicetree/bindings/input/pwm-beeper.txt
> >
> > diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.txt b/Documentation/devicetree/bindings/input/pwm-beeper.txt
> > new file mode 100644
> > index 0000000..7388b82
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/input/pwm-beeper.txt
> > @@ -0,0 +1,7 @@
> > +* PWM beeper device tree bindings
> > +
> > +Registers a PWM device as beeper.
> > +
> > +Required properties:
> > +- compatible: should be "pwm-beeper"
> > +- pwms: phandle to the physical pwm device
> > diff --git a/drivers/input/misc/pwm-beeper.c b/drivers/input/misc/pwm-beeper.c
> > index fc84c8a..a6aa48c 100644
> > --- a/drivers/input/misc/pwm-beeper.c
> > +++ b/drivers/input/misc/pwm-beeper.c
> > @@ -75,7 +75,10 @@ static int __devinit pwm_beeper_probe(struct platform_device *pdev)
> > if (!beeper)
> > return -ENOMEM;
> >
> > - beeper->pwm = pwm_request(pwm_id, "pwm beeper");
> > + if (pdev->dev.platform_data)
> > + beeper->pwm = pwm_request(pwm_id, "pwm beeper");
> > + else
> > + beeper->pwm = pwm_get(&pdev->dev, NULL);
Hmm, pwm_id == 0 is a valid ID I think, but your change makes it go into
DT branch, potentially breaking it.
Thanks.
--
Dmitry
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