linux-kernel - Re: [PATCH v2 6/8] drivers:input:ads7846(+tsc2046): recognise old binding for coordinate flipping

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Message-ID: <CAL_JsqKXN1J-vkZm1f-4en4oa8Dz3c=xN_POCnDvzbAWqsPGfA@mail.gmail.com>
Date:	Sat, 14 Nov 2015 20:19:06 -0600
From:	Rob Herring <robh+dt@...nel.org>
To:	"H. Nikolaus Schaller" <hns@...delico.com>
Cc:	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Benoît Cousson <bcousson@...libre.com>,
	Tony Lindgren <tony@...mide.com>,
	Russell King <linux@....linux.org.uk>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Hans Verkuil <hans.verkuil@...co.com>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Sebastian Reichel <sre@...nel.org>,
	Haibo Chen <haibo.chen@...escale.com>,
	Andrey Gelman <andrey.gelman@...pulab.co.il>,
	Igor Grinberg <grinberg@...pulab.co.il>,
	Aaron Sierra <asierra@...-inc.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-omap <linux-omap@...r.kernel.org>,
	List for communicating with real GTA04 owners 
	<gta04-owner@...delico.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>
Subject: Re: [PATCH v2 6/8] drivers:input:ads7846(+tsc2046): recognise old
 binding for coordinate flipping

On Fri, Nov 13, 2015 at 2:35 PM, H. Nikolaus Schaller <hns@...delico.com> wrote:
> By this patch we still recognise the old binding ti,swap-xy in parallel to
> the common binding touchscreen-swapped-x-y. This keeps compatibility
> to older (out-of-tree) device tree binaries.
>
> We do this in a separate patch so that it can be easily reverted in the
> future to retire the old API. A notice is printed to remind developers
> of using old API.
>
> We also fix the bindings name for all in-tree device tree sources in
> a separate patch.

This one and patch 5 should be combined, so the series is bisectable.

Rob

>
> Signed-off-by: H. Nikolaus Schaller <hns@...delico.com>
> ---
>  drivers/input/touchscreen/ads7846.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
> index 4525f00..b9896fd 100644
> --- a/drivers/input/touchscreen/ads7846.c
> +++ b/drivers/input/touchscreen/ads7846.c
> @@ -1259,7 +1259,11 @@ static const struct ads7846_platform_data *ads7846_probe_dt(struct device *dev)
>         of_property_read_u16(node, "ti,vref-mv", &pdata->vref_mv);
>         pdata->keep_vref_on = of_property_read_bool(node, "ti,keep-vref-on");
>
> -       pdata->swap_xy = of_property_read_bool(node, "touchscreen-swapped-x-y");
> +       pdata->swap_xy = of_property_read_bool(node, "ti,swap-xy");
> +       if (pdata->swap_xy)
> +               dev_notice(dev, "please update device tree to use touchscreen-swapped-x-y");
> +       pdata->swap_xy |= of_property_read_bool(node,
> +                                               "touchscreen-swapped-x-y");
>
>         of_property_read_u16(node, "ti,settle-delay-usec",
>                              &pdata->settle_delay_usecs);
> --
> 2.5.1
>
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