[PATCH 0/2] arm: am335x: am335x evm sk: add touchscreen DT node

[PATCH 0/2] arm: am335x: am335x evm sk: add touchscreen DT node

[Felipe Balbi]

Hi,

the following patches fix a typo on TSC/ADC DT binding while
maintaining backwards compatibility and add support for the
touchscreen available on am335x-evm-sk.

Patches have been tested with am335x-evm-sk with a couple patches
(already floating around the mailing lists) to get that board
booting in mainline.

cheers

Felipe Balbi (2):
  input: touchscreen: fix spelling mistake in TSC/ADC DT binding
  arm: dts: am335x sk: add touchscreen support

 .../devicetree/bindings/input/touchscreen/ti-tsc-adc.txt       |  2 +-
 arch/arm/boot/dts/am335x-evm.dts                               |  2 +-
 arch/arm/boot/dts/am335x-evmsk.dts                             | 10 ++++++++++
 drivers/input/touchscreen/ti_am335x_tsc.c                      |  9 ++++++++-
 4 files changed, 20 insertions(+), 3 deletions(-)

-- 
1.8.4.GIT

[PATCH 1/2] input: touchscreen: fix spelling mistake in TSC/ADC DT binding

[Felipe Balbi]

There was a spelling mistake on TSC/ADC binding where
"coordinate" was spelled as "coordiante".

We can't simply fix the error due to DT being an ABI,
the approach taken was to first use correct spelling
and if that fails, fallback to miss-spelled version.

It's unfortunate that has creeped into the tree.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---
 .../devicetree/bindings/input/touchscreen/ti-tsc-adc.txt         | 2 +-
 arch/arm/boot/dts/am335x-evm.dts                                 | 2 +-
 drivers/input/touchscreen/ti_am335x_tsc.c                        | 9 ++++++++-
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt b/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt
index 491c97b..878549b 100644
--- a/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt
+++ b/Documentation/devicetree/bindings/input/touchscreen/ti-tsc-adc.txt
@@ -6,7 +6,7 @@ Required properties:
 	ti,wires: Wires refer to application modes i.e. 4/5/8 wire touchscreen
 		  support on the platform.
 	ti,x-plate-resistance: X plate resistance
-	ti,coordiante-readouts: The sequencer supports a total of 16
+	ti,coordinate-readouts: The sequencer supports a total of 16
 				programmable steps each step is used to
 				read a single coordinate. A single
                                 readout is enough but multiple reads can
diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts
index e8ec875..c5b73bc 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -509,7 +509,7 @@
 	tsc {
 		ti,wires = <4>;
 		ti,x-plate-resistance = <200>;
-		ti,coordiante-readouts = <5>;
+		ti,coordinate-readouts = <5>;
 		ti,wire-config = <0x00 0x11 0x22 0x33>;
 	};
 
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index e1c5300..b61df9d 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -348,9 +348,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
 	if (err < 0)
 		return err;
 
-	err = of_property_read_u32(node, "ti,coordiante-readouts",
+	/*
+	 * try with new binding first. If it fails, still try with
+	 * bogus, miss-spelled version.
+	 */
+	err = of_property_read_u32(node, "ti,coordinate-readouts",
 			&ts_dev->coordinate_readouts);
 	if (err < 0)
+		err = of_property_read_u32(node, "ti,coordiante-readouts",
+				&ts_dev->coordinate_readouts);
+	if (err < 0)
 		return err;
 
 	return of_property_read_u32_array(node, "ti,wire-config",
-- 
1.8.4.GIT

Re: [PATCH 1/2] input: touchscreen: fix spelling mistake in TSC/ADC DT binding

[Sebastian Andrzej Siewior]

On 10/21/2013 10:13 PM, Felipe Balbi wrote:
> diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> index e1c5300..b61df9d 100644
> --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> @@ -348,9 +348,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
>  	if (err < 0)
>  		return err;
>  
> -	err = of_property_read_u32(node, "ti,coordiante-readouts",
> +	/*
> +	 * try with new binding first. If it fails, still try with
> +	 * bogus, miss-spelled version.
> +	 */
> +	err = of_property_read_u32(node, "ti,coordinate-readouts",
>  			&ts_dev->coordinate_readouts);
>  	if (err < 0)
> +		err = of_property_read_u32(node, "ti,coordiante-readouts",
> +				&ts_dev->coordinate_readouts);
> +	if (err < 0)
>  		return err;

Thanks, very good. Do we keep this fallback for ever or just for a year
or two?

>  
>  	return of_property_read_u32_array(node, "ti,wire-config",

Sebastian

Re: [PATCH 1/2] input: touchscreen: fix spelling mistake in TSC/ADC DT binding

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 1191 bytes --]

Hi,

On Tue, Oct 22, 2013 at 10:42:00AM +0200, Sebastian Andrzej Siewior wrote:
> On 10/21/2013 10:13 PM, Felipe Balbi wrote:
> > diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> > index e1c5300..b61df9d 100644
> > --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> > +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> > @@ -348,9 +348,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
> >  	if (err < 0)
> >  		return err;
> >  
> > -	err = of_property_read_u32(node, "ti,coordiante-readouts",
> > +	/*
> > +	 * try with new binding first. If it fails, still try with
> > +	 * bogus, miss-spelled version.
> > +	 */
> > +	err = of_property_read_u32(node, "ti,coordinate-readouts",
> >  			&ts_dev->coordinate_readouts);
> >  	if (err < 0)
> > +		err = of_property_read_u32(node, "ti,coordiante-readouts",
> > +				&ts_dev->coordinate_readouts);
> > +	if (err < 0)
> >  		return err;
> 
> Thanks, very good. Do we keep this fallback for ever or just for a year
> or two?

That's for DT maintainers to decide but considering DT is an ABI, I
guess we need to keep for 30 years or so :-p

-- 
balbi

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Re: [PATCH 1/2] input: touchscreen: fix spelling mistake in TSC/ADC DT binding

[Mark Rutland]

On Tue, Oct 22, 2013 at 01:02:53PM +0100, Felipe Balbi wrote:
> Hi,
> 
> On Tue, Oct 22, 2013 at 10:42:00AM +0200, Sebastian Andrzej Siewior wrote:
> > On 10/21/2013 10:13 PM, Felipe Balbi wrote:
> > > diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > index e1c5300..b61df9d 100644
> > > --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> > > +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > @@ -348,9 +348,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
> > >  	if (err < 0)
> > >  		return err;
> > >  
> > > -	err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > +	/*
> > > +	 * try with new binding first. If it fails, still try with
> > > +	 * bogus, miss-spelled version.
> > > +	 */
> > > +	err = of_property_read_u32(node, "ti,coordinate-readouts",
> > >  			&ts_dev->coordinate_readouts);
> > >  	if (err < 0)
> > > +		err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > +				&ts_dev->coordinate_readouts);
> > > +	if (err < 0)
> > >  		return err;
> > 
> > Thanks, very good. Do we keep this fallback for ever or just for a year
> > or two?
> 
> That's for DT maintainers to decide but considering DT is an ABI, I
> guess we need to keep for 30 years or so :-p

We keep it as long as we have to. If no-one's relying on the typo by the
next merge window, I see no reason we'd have to keep support for the
typo beyond that. If someone's shipped a device with a dtb with the typo
hard-coded into some ROM, that's another matter...

It might be worth printing a warning in the case of the typo'd version,
suggesting correcting the DT. That will encourage anyone with a broken
dt to get a fixed one.

Mark.

Re: [PATCH 1/2] input: touchscreen: fix spelling mistake in TSC/ADC DT binding

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 1608 bytes --]

HI,

On Thu, Nov 14, 2013 at 11:19:59AM +0000, Mark Rutland wrote:
> > On Tue, Oct 22, 2013 at 10:42:00AM +0200, Sebastian Andrzej Siewior wrote:
> > > On 10/21/2013 10:13 PM, Felipe Balbi wrote:
> > > > diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > index e1c5300..b61df9d 100644
> > > > --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > @@ -348,9 +348,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
> > > >  	if (err < 0)
> > > >  		return err;
> > > >  
> > > > -	err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > > +	/*
> > > > +	 * try with new binding first. If it fails, still try with
> > > > +	 * bogus, miss-spelled version.
> > > > +	 */
> > > > +	err = of_property_read_u32(node, "ti,coordinate-readouts",
> > > >  			&ts_dev->coordinate_readouts);
> > > >  	if (err < 0)
> > > > +		err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > > +				&ts_dev->coordinate_readouts);
> > > > +	if (err < 0)
> > > >  		return err;
> > > 
> > > Thanks, very good. Do we keep this fallback for ever or just for a year
> > > or two?
> > 
> > That's for DT maintainers to decide but considering DT is an ABI, I
> > guess we need to keep for 30 years or so :-p
> 
> We keep it as long as we have to. If no-one's relying on the typo by the
> next merge window, I see no reason we'd have to keep support for the

and how could you know that ? considering it's an ABI, how could you
ever know that ?

-- 
balbi

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Re: [PATCH 1/2] input: touchscreen: fix spelling mistake in TSC/ADC DT binding

[Mark Rutland]

On Thu, Nov 14, 2013 at 03:54:04PM +0000, Felipe Balbi wrote:
> HI,
> 
> On Thu, Nov 14, 2013 at 11:19:59AM +0000, Mark Rutland wrote:
> > > On Tue, Oct 22, 2013 at 10:42:00AM +0200, Sebastian Andrzej Siewior wrote:
> > > > On 10/21/2013 10:13 PM, Felipe Balbi wrote:
> > > > > diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > > index e1c5300..b61df9d 100644
> > > > > --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > > +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > > @@ -348,9 +348,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
> > > > >  	if (err < 0)
> > > > >  		return err;
> > > > >  
> > > > > -	err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > > > +	/*
> > > > > +	 * try with new binding first. If it fails, still try with
> > > > > +	 * bogus, miss-spelled version.
> > > > > +	 */
> > > > > +	err = of_property_read_u32(node, "ti,coordinate-readouts",
> > > > >  			&ts_dev->coordinate_readouts);
> > > > >  	if (err < 0)
> > > > > +		err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > > > +				&ts_dev->coordinate_readouts);
> > > > > +	if (err < 0)
> > > > >  		return err;
> > > > 
> > > > Thanks, very good. Do we keep this fallback for ever or just for a year
> > > > or two?
> > > 
> > > That's for DT maintainers to decide but considering DT is an ABI, I
> > > guess we need to keep for 30 years or so :-p
> > 
> > We keep it as long as we have to. If no-one's relying on the typo by the
> > next merge window, I see no reason we'd have to keep support for the
> 
> and how could you know that ? considering it's an ABI, how could you
> ever know that ?

If you know that the only user of a binding is a dts for a particular
product that you're in charge of, then you'd know the set of kernel +
dtb combinations out there, and can judge.

If a bug is found in a driver such that it hasn't worked for a number of
releases, and no-one's complained, the binding is clearly not in use and
thus support for it can be removed.

If maintaining compatibility becomes too hard, and all users are happy
to migrate to a newer dtb, then it's not necessary to maintain
compatiblity for the old binding.

While we can't always remove existing bindings, there are cases where
it's possible and appropriate. However, we should strive for
compatibility for as long a term as possible.

Thanks,
Mark.

Re: [PATCH 1/2] input: touchscreen: fix spelling mistake in TSC/ADC DT binding

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 2156 bytes --]

Hi,

On Fri, Nov 15, 2013 at 03:55:40PM +0000, Mark Rutland wrote:
> > > > > > diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > > > index e1c5300..b61df9d 100644
> > > > > > --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > > > +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > > > @@ -348,9 +348,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
> > > > > >  	if (err < 0)
> > > > > >  		return err;
> > > > > >  
> > > > > > -	err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > > > > +	/*
> > > > > > +	 * try with new binding first. If it fails, still try with
> > > > > > +	 * bogus, miss-spelled version.
> > > > > > +	 */
> > > > > > +	err = of_property_read_u32(node, "ti,coordinate-readouts",
> > > > > >  			&ts_dev->coordinate_readouts);
> > > > > >  	if (err < 0)
> > > > > > +		err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > > > > +				&ts_dev->coordinate_readouts);
> > > > > > +	if (err < 0)
> > > > > >  		return err;
> > > > > 
> > > > > Thanks, very good. Do we keep this fallback for ever or just for a year
> > > > > or two?
> > > > 
> > > > That's for DT maintainers to decide but considering DT is an ABI, I
> > > > guess we need to keep for 30 years or so :-p
> > > 
> > > We keep it as long as we have to. If no-one's relying on the typo by the
> > > next merge window, I see no reason we'd have to keep support for the
> > 
> > and how could you know that ? considering it's an ABI, how could you
> > ever know that ?
> 
> If you know that the only user of a binding is a dts for a particular
> product that you're in charge of, then you'd know the set of kernel +
> dtb combinations out there, and can judge.

once the binding has made into mainline, it's next to impossible to
figure out who has downloaded a tarball containing that driver and made
a product out of it.

Besides keeping that check in the driver won't hurt at all in the long
run. I would give it at least until 4.0 before thinking about removing,
and that might still not be enough time.

-- 
balbi

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Re: [PATCH 1/2] input: touchscreen: fix spelling mistake in TSC/ADC DT binding

[Mark Rutland]

On Fri, Nov 15, 2013 at 05:53:56PM +0000, Felipe Balbi wrote:
> Hi,
> 
> On Fri, Nov 15, 2013 at 03:55:40PM +0000, Mark Rutland wrote:
> > > > > > > diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > > > > index e1c5300..b61df9d 100644
> > > > > > > --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > > > > +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> > > > > > > @@ -348,9 +348,16 @@ static int titsc_parse_dt(struct platform_device *pdev,
> > > > > > >  	if (err < 0)
> > > > > > >  		return err;
> > > > > > >  
> > > > > > > -	err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > > > > > +	/*
> > > > > > > +	 * try with new binding first. If it fails, still try with
> > > > > > > +	 * bogus, miss-spelled version.
> > > > > > > +	 */
> > > > > > > +	err = of_property_read_u32(node, "ti,coordinate-readouts",
> > > > > > >  			&ts_dev->coordinate_readouts);
> > > > > > >  	if (err < 0)
> > > > > > > +		err = of_property_read_u32(node, "ti,coordiante-readouts",
> > > > > > > +				&ts_dev->coordinate_readouts);
> > > > > > > +	if (err < 0)
> > > > > > >  		return err;
> > > > > > 
> > > > > > Thanks, very good. Do we keep this fallback for ever or just for a year
> > > > > > or two?
> > > > > 
> > > > > That's for DT maintainers to decide but considering DT is an ABI, I
> > > > > guess we need to keep for 30 years or so :-p
> > > > 
> > > > We keep it as long as we have to. If no-one's relying on the typo by the
> > > > next merge window, I see no reason we'd have to keep support for the
> > > 
> > > and how could you know that ? considering it's an ABI, how could you
> > > ever know that ?
> > 
> > If you know that the only user of a binding is a dts for a particular
> > product that you're in charge of, then you'd know the set of kernel +
> > dtb combinations out there, and can judge.
> 
> once the binding has made into mainline, it's next to impossible to
> figure out who has downloaded a tarball containing that driver and made
> a product out of it.
> 
> Besides keeping that check in the driver won't hurt at all in the long
> run. I would give it at least until 4.0 before thinking about removing,
> and that might still not be enough time.

That sounds sensible to me. As mentioned before I'd recommend adding a
warning for the typo now in the (possibly naïve) hope that it will
encourage people to fix up their dts early.

Thanks,
Mark.
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[PATCH] input: touchscreen: ti_am335x_tsc: warn about incorrect spelling

[Felipe Balbi]

In the hopes that people run new kernels on
their devices, let's add a warning message
asking users to have their DTS file fixed.

The goal is that by Linux 4.0 we will be
able to remove support for the bogus version
of our touchscreen's DTS.

Suggested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---

Here you go, I've added your Suggested-by Mark,
if you wish I can remove or change to something
else.

cheers

 drivers/input/touchscreen/ti_am335x_tsc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index b61df9d..91302cd 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -354,9 +354,12 @@ static int titsc_parse_dt(struct platform_device *pdev,
 	 */
 	err = of_property_read_u32(node, "ti,coordinate-readouts",
 			&ts_dev->coordinate_readouts);
-	if (err < 0)
+	if (err < 0) {
+		dev_warn(&pdev->dev, "please use 'ti,coordinate-readouts' instead\n");
 		err = of_property_read_u32(node, "ti,coordiante-readouts",
 				&ts_dev->coordinate_readouts);
+	}
+
 	if (err < 0)
 		return err;
 
-- 
1.8.4.GIT

Re: [PATCH] input: touchscreen: ti_am335x_tsc: warn about incorrect spelling

[Mark Rutland]

On Mon, Nov 18, 2013 at 03:29:01PM +0000, Felipe Balbi wrote:
> In the hopes that people run new kernels on
> their devices, let's add a warning message
> asking users to have their DTS file fixed.
> 
> The goal is that by Linux 4.0 we will be
> able to remove support for the bogus version
> of our touchscreen's DTS.
> 
> Suggested-by: Mark Rutland <mark.rutland@arm.com>
> Signed-off-by: Felipe Balbi <balbi@ti.com>
> ---
> 
> Here you go, I've added your Suggested-by Mark,
> if you wish I can remove or change to something
> else.
> 
> cheers

Looks fine to me, feel free to add my Ack.

Thanks,
Mark.

> 
>  drivers/input/touchscreen/ti_am335x_tsc.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> index b61df9d..91302cd 100644
> --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> @@ -354,9 +354,12 @@ static int titsc_parse_dt(struct platform_device *pdev,
>  	 */
>  	err = of_property_read_u32(node, "ti,coordinate-readouts",
>  			&ts_dev->coordinate_readouts);
> -	if (err < 0)
> +	if (err < 0) {
> +		dev_warn(&pdev->dev, "please use 'ti,coordinate-readouts' instead\n");
>  		err = of_property_read_u32(node, "ti,coordiante-readouts",
>  				&ts_dev->coordinate_readouts);
> +	}
> +
>  	if (err < 0)
>  		return err;
>  
> -- 
> 1.8.4.GIT
> 
> 

Re: [PATCH] input: touchscreen: ti_am335x_tsc: warn about incorrect spelling

[Felipe Balbi]

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Hi,

Here's another patch which has been pending for months.

On Mon, Nov 18, 2013 at 09:29:01AM -0600, Felipe Balbi wrote:
> In the hopes that people run new kernels on
> their devices, let's add a warning message
> asking users to have their DTS file fixed.
> 
> The goal is that by Linux 4.0 we will be
> able to remove support for the bogus version
> of our touchscreen's DTS.
> 
> Suggested-by: Mark Rutland <mark.rutland@arm.com>
> Signed-off-by: Felipe Balbi <balbi@ti.com>
> ---
> 
> Here you go, I've added your Suggested-by Mark,
> if you wish I can remove or change to something
> else.
> 
> cheers
> 
>  drivers/input/touchscreen/ti_am335x_tsc.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> index b61df9d..91302cd 100644
> --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> @@ -354,9 +354,12 @@ static int titsc_parse_dt(struct platform_device *pdev,
>  	 */
>  	err = of_property_read_u32(node, "ti,coordinate-readouts",
>  			&ts_dev->coordinate_readouts);
> -	if (err < 0)
> +	if (err < 0) {
> +		dev_warn(&pdev->dev, "please use 'ti,coordinate-readouts' instead\n");
>  		err = of_property_read_u32(node, "ti,coordiante-readouts",
>  				&ts_dev->coordinate_readouts);
> +	}
> +
>  	if (err < 0)
>  		return err;
>  
> -- 
> 1.8.4.GIT
> 

-- 
balbi

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Re: [PATCH] input: touchscreen: ti_am335x_tsc: warn about incorrect spelling

[Dmitry Torokhov]

On Fri, Jun 13, 2014 at 07:23:55PM -0500, Felipe Balbi wrote:
> Hi,
> 
> Here's another patch which has been pending for months.

Sorry, lost track of this one, applied.

> 
> On Mon, Nov 18, 2013 at 09:29:01AM -0600, Felipe Balbi wrote:
> > In the hopes that people run new kernels on
> > their devices, let's add a warning message
> > asking users to have their DTS file fixed.
> > 
> > The goal is that by Linux 4.0 we will be
> > able to remove support for the bogus version
> > of our touchscreen's DTS.
> > 
> > Suggested-by: Mark Rutland <mark.rutland@arm.com>
> > Signed-off-by: Felipe Balbi <balbi@ti.com>
> > ---
> > 
> > Here you go, I've added your Suggested-by Mark,
> > if you wish I can remove or change to something
> > else.
> > 
> > cheers
> > 
> >  drivers/input/touchscreen/ti_am335x_tsc.c | 5 ++++-
> >  1 file changed, 4 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
> > index b61df9d..91302cd 100644
> > --- a/drivers/input/touchscreen/ti_am335x_tsc.c
> > +++ b/drivers/input/touchscreen/ti_am335x_tsc.c
> > @@ -354,9 +354,12 @@ static int titsc_parse_dt(struct platform_device *pdev,
> >  	 */
> >  	err = of_property_read_u32(node, "ti,coordinate-readouts",
> >  			&ts_dev->coordinate_readouts);
> > -	if (err < 0)
> > +	if (err < 0) {
> > +		dev_warn(&pdev->dev, "please use 'ti,coordinate-readouts' instead\n");
> >  		err = of_property_read_u32(node, "ti,coordiante-readouts",
> >  				&ts_dev->coordinate_readouts);
> > +	}
> > +
> >  	if (err < 0)
> >  		return err;
> >  
> > -- 
> > 1.8.4.GIT
> > 
> 
> -- 
> balbi



-- 
Dmitry

Re: [PATCH] input: touchscreen: ti_am335x_tsc: warn about incorrect spelling

[Felipe Balbi]

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On Sun, Jun 15, 2014 at 12:16:36AM -0700, Dmitry Torokhov wrote:
> On Fri, Jun 13, 2014 at 07:23:55PM -0500, Felipe Balbi wrote:
> > Hi,
> > 
> > Here's another patch which has been pending for months.
> 
> Sorry, lost track of this one, applied.

Thank you

-- 
balbi

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[PATCH 2/2] arm: dts: am335x sk: add touchscreen support

[Felipe Balbi]

Add missing nodes for the touchscreen available
on AM335x EVM SK.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---
 arch/arm/boot/dts/am335x-evmsk.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts
index 4f339fa..d7c2c0c 100644
--- a/arch/arm/boot/dts/am335x-evmsk.dts
+++ b/arch/arm/boot/dts/am335x-evmsk.dts
@@ -419,3 +419,13 @@
 	phy_id = <&davinci_mdio>, <1>;
 	phy-mode = "rgmii-txid";
 };
+
+&tscadc {
+	status = "okay";
+	tsc {
+		ti,wires = <4>;
+		ti,x-plate-resistance = <200>;
+		ti,coordinate-readouts = <5>;
+		ti,wire-config = <0x00 0x11 0x22 0x33>;
+	};
+};
-- 
1.8.4.GIT

Re: [PATCH 0/2] arm: am335x: am335x evm sk: add touchscreen DT node

[Dmitry Torokhov]

On Mon, Oct 21, 2013 at 03:13:22PM -0500, Felipe Balbi wrote:
> Hi,
> 
> the following patches fix a typo on TSC/ADC DT binding while
> maintaining backwards compatibility and add support for the
> touchscreen available on am335x-evm-sk.
> 
> Patches have been tested with am335x-evm-sk with a couple patches
> (already floating around the mailing lists) to get that board
> booting in mainline.
> 
> cheers

Applied, thank you.

> 
> Felipe Balbi (2):
>   input: touchscreen: fix spelling mistake in TSC/ADC DT binding
>   arm: dts: am335x sk: add touchscreen support
> 
>  .../devicetree/bindings/input/touchscreen/ti-tsc-adc.txt       |  2 +-
>  arch/arm/boot/dts/am335x-evm.dts                               |  2 +-
>  arch/arm/boot/dts/am335x-evmsk.dts                             | 10 ++++++++++
>  drivers/input/touchscreen/ti_am335x_tsc.c                      |  9 ++++++++-
>  4 files changed, 20 insertions(+), 3 deletions(-)
> 
> -- 
> 1.8.4.GIT
> 

-- 
Dmitry
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