Re: [PATCH RFC V2 1/3] Input: goodix - add dt axis swapping and axis inversion support

[Karsten Merker]

On Tue, Oct 13, 2015 at 06:58:07AM +0000, Tirdea, Irina wrote:
> 
> > -----Original Message-----
> > From: linux-input-owner@xxxxxxxxxxxxxxx [mailto:linux-input-owner@xxxxxxxxxxxxxxx] On Behalf Of Karsten Merker
> > Sent: 09 October, 2015 20:56
> > To: Bastien Nocera; Dmitry Torokhov; Tirdea, Irina; Aleksei Mamlin; linux-input@xxxxxxxxxxxxxxx; Ian Campbell
> > Cc: devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Chen-Yu Tsai; Karsten Merker
> > Subject: [PATCH RFC V2 1/3] Input: goodix - add dt axis swapping and axis inversion support
> > 
> > Implement support for the following device-tree properties
> > in the goodix touchscreen driver:
> > 
> >  - touchscreen-inverted-x:  X axis is inverted (boolean)
> >  - touchscreen-inverted-y:  Y axis is inverted (boolean)
> >  - touchscreen-swapped-x-y: X and Y axis are swapped (boolean)
> > 
> > These are necessary on tablets which have a display in portrait
> > format while the touchscreen is in landscape format, such as e.g.
> > the MSI Primo 81.
[...]
> > @@ -950,6 +968,15 @@ static int goodix_ts_probe(struct i2c_client *client,
> >  		return 0;
> >  	}
> > 
> > +#ifdef CONFIG_OF
> > +	ts->swapped_x_y = of_property_read_bool(client->dev.of_node,
> > +						"touchscreen-swapped-x-y");
> > +	ts->inverted_x = of_property_read_bool(client->dev.of_node,
> > +					       "touchscreen-inverted-x");
> > +	ts->inverted_y = of_property_read_bool(client->dev.of_node,
> > +					       "touchscreen-inverted-y");
> > +#endif
> > +
> 
> If interrupt and reset gpio pins are declared in the DT configuration, this code will not
> be executed.  To make the properties available for all configurations (with/without
> gpio pins declared), you should read the properties inside goodix_configure_dev().
> 
> You could also use device_property_read_bool() instead, so that these properties can
> be used with ACPI 5.1. as well.

Hello,

many thanks for the review.

I'll address both points in a v3 of the patch.

Regards,
Karsten
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