linux-kernel - Re: [PATCH 3/5] Input: bu21013_ts - Add support for Device Tree booting

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Message-ID: <20121126090736.GC12782@gmail.com>
Date:	Mon, 26 Nov 2012 09:07:36 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-input@...r.kernel.org
Subject: Re: [PATCH 3/5] Input: bu21013_ts - Add support for Device Tree
 booting

On Fri, 23 Nov 2012, Dmitry Torokhov wrote:

> On Fri, Nov 23, 2012 at 03:52:58PM +0000, Lee Jones wrote:
> > On Wed, 14 Nov 2012, Lee Jones wrote:
> > 
> > > Now we can register the BU21013_ts touch screen when booting with
> > > Device Tree enabled. Here we parse all the necessary components
> > > previously expected to be passed from platform data.
> > > 
> > > Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
> > > Cc: linux-input@...r.kernel.org
> > > Acked-by: Arnd Bergmann <arnd@...db.de>
> > > Acked-by: Linus Walleij <linus.walleij@...aro.org>
> > > Signed-off-by: Lee Jones <lee.jones@...aro.org>
> > > ---
> > >  drivers/input/touchscreen/bu21013_ts.c |   39 ++++++++++++++++++++++++++++----
> > >  1 file changed, 35 insertions(+), 4 deletions(-)
> > > 
> > > diff --git a/drivers/input/touchscreen/bu21013_ts.c b/drivers/input/touchscreen/bu21013_ts.c
> > > index 5d8fc75..afef874 100644
> > > --- a/drivers/input/touchscreen/bu21013_ts.c
> > > +++ b/drivers/input/touchscreen/bu21013_ts.c
> > > @@ -15,6 +15,8 @@
> > >  #include <linux/regulator/consumer.h>
> > >  #include <linux/module.h>
> > >  #include <linux/gpio.h>
> > > +#include <linux/of.h>
> > > +#include <linux/of_gpio.h>
> > >  
> > >  /* Reference tracking for multiple displays. */
> > >  static int bu21013_devices = 0;
> > > @@ -487,13 +489,33 @@ static void bu21013_free_irq(struct bu21013_ts_data *bu21013_data)
> > >   * This function used to initializes the i2c-client touchscreen
> > >   * driver and returns integer.
> > >   */
> > > +static void __devinit bu21013_of_probe(struct device_node *np,
> > > +				struct bu21013_platform_device *pdata)
> > > +{
> > > +	pdata->y_flip = pdata->x_flip = false;
> > > +
> > > +	if (of_get_property(np, "rohm,flip-x", NULL))
> > > +		pdata->x_flip = true;
> 
> 	pdata->x_flip = of_property_read_bool(np, "rohm,flip-x");
> 
> ?

Yes, we can do this now it exists.

> Can I also get patch documenting the DT properties?

Sure. As a follow-up? I'll resubmit this first, right away.

-- 
Lee Jones
Linaro ST-Ericsson Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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