[PATCH] Input: goodix - support gt9147 touchpanel

[PATCH] Input: goodix - support gt9147 touchpanel

[Yannick Fertre]

From: Yannick Fertré <yannick.fertre@st.com>

Add support for it by adding compatible and supported chip data
(default settings used).
The chip data on GT9147 is similar to GT912, like
- config data register has 0x8047 address
- config data register max len is 240
- config data checksum has 8-bit

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
---
 drivers/input/touchscreen/goodix.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
index fb43aa7..b470773 100644
--- a/drivers/input/touchscreen/goodix.c
+++ b/drivers/input/touchscreen/goodix.c
@@ -1045,6 +1045,7 @@ static const struct of_device_id goodix_of_match[] = {
 	{ .compatible = "goodix,gt9271" },
 	{ .compatible = "goodix,gt928" },
 	{ .compatible = "goodix,gt967" },
+	{ .compatible = "goodix,gt9147",},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, goodix_of_match);
-- 
2.7.4

Re: [PATCH] Input: goodix - support gt9147 touchpanel

[Dmitry Torokhov]

On Wed, Nov 27, 2019 at 11:28:46AM +0100, Yannick Fertre wrote:
> From: Yannick Fertré <yannick.fertre@st.com>
> 
> Add support for it by adding compatible and supported chip data
> (default settings used).
> The chip data on GT9147 is similar to GT912, like
> - config data register has 0x8047 address
> - config data register max len is 240
> - config data checksum has 8-bit

If it is compatible with gt912 then the driver does not need another
compatible in the code I think. Rob will tell more.

> 
> Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
> ---
>  drivers/input/touchscreen/goodix.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c
> index fb43aa7..b470773 100644
> --- a/drivers/input/touchscreen/goodix.c
> +++ b/drivers/input/touchscreen/goodix.c
> @@ -1045,6 +1045,7 @@ static const struct of_device_id goodix_of_match[] = {
>  	{ .compatible = "goodix,gt9271" },
>  	{ .compatible = "goodix,gt928" },
>  	{ .compatible = "goodix,gt967" },
> +	{ .compatible = "goodix,gt9147",},
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(of, goodix_of_match);
> -- 
> 2.7.4
> 

-- 
Dmitry

RE: [PATCH] Input: goodix - support gt9147 touchpanel

[Yannick FERTRE]

Hello,
Dmitry,
I forgot to modify the binding to declare the new compatible "gt9147".
Rob,
can I modify the binding without converting it first to yaml?

Best regards

Yannick Fertré

-----Original Message-----
From: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Sent: dimanche 1 décembre 2019 04:08
To: Yannick FERTRE <yannick.fertre@st.com>; Rob Herring <robh+dt@kernel.org>
Cc: Philippe CORNU <philippe.cornu@st.com>; Benjamin GAIGNARD <benjamin.gaignard@st.com>; Bastien Nocera <hadess@hadess.net>; linux-input@vger.kernel.org; linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Input: goodix - support gt9147 touchpanel

On Wed, Nov 27, 2019 at 11:28:46AM +0100, Yannick Fertre wrote:
> From: Yannick Fertré <yannick.fertre@st.com>
> 
> Add support for it by adding compatible and supported chip data 
> (default settings used).
> The chip data on GT9147 is similar to GT912, like
> - config data register has 0x8047 address
> - config data register max len is 240
> - config data checksum has 8-bit

If it is compatible with gt912 then the driver does not need another compatible in the code I think. Rob will tell more.

> 
> Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
> ---
>  drivers/input/touchscreen/goodix.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/input/touchscreen/goodix.c 
> b/drivers/input/touchscreen/goodix.c
> index fb43aa7..b470773 100644
> --- a/drivers/input/touchscreen/goodix.c
> +++ b/drivers/input/touchscreen/goodix.c
> @@ -1045,6 +1045,7 @@ static const struct of_device_id goodix_of_match[] = {
>  	{ .compatible = "goodix,gt9271" },
>  	{ .compatible = "goodix,gt928" },
>  	{ .compatible = "goodix,gt967" },
> +	{ .compatible = "goodix,gt9147",},
>  	{ }
>  };
>  MODULE_DEVICE_TABLE(of, goodix_of_match);
> --
> 2.7.4
> 

-- 
Dmitry