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[1/2] input: gpio-keys: add support for disable button from DT

Message ID 1452598370-28509-1-git-send-email-ldewangan@nvidia.com (mailing list archive)
State Changes Requested
Headers show

Commit Message

Laxman Dewangan Jan. 12, 2016, 11:32 a.m. UTC
Add support to disable the button from DT via status property
if given button is not supporting on given platforms.

This will help to re-use the existing dtsi file with status
enable/disable across platforms.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
---
 drivers/input/keyboard/gpio_keys.c | 8 ++++++++
 1 file changed, 8 insertions(+)

Comments

Dmitry Torokhov Jan. 12, 2016, 9:19 p.m. UTC | #1
On Tue, Jan 12, 2016 at 05:02:49PM +0530, Laxman Dewangan wrote:
> Add support to disable the button from DT via status property
> if given button is not supporting on given platforms.
> 
> This will help to re-use the existing dtsi file with status
> enable/disable across platforms.
> 
> Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
> ---
>  drivers/input/keyboard/gpio_keys.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
> index bef317f..cf068cb 100644
> --- a/drivers/input/keyboard/gpio_keys.c
> +++ b/drivers/input/keyboard/gpio_keys.c
> @@ -632,6 +632,14 @@ gpio_keys_get_devtree_pdata(struct device *dev)
>  	for_each_child_of_node(node, pp) {
>  		enum of_gpio_flags flags;
>  
> +		/* Ignore the button if status of node is disabled */
> +		error = of_device_is_available(pp);
> +		if (!error) {
> +			dev_info(dev, "Button %s is ignored\n", pp->name);

I'd rather have it as dev_dbg() please.

> +			pdata->nbuttons--;
> +			continue;
> +		}
> +
>  		button = &pdata->buttons[i++];
>  
>  		button->gpio = of_get_gpio_flags(pp, 0, &flags);
> -- 
> 2.1.4
>
diff mbox

Patch

diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index bef317f..cf068cb 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -632,6 +632,14 @@  gpio_keys_get_devtree_pdata(struct device *dev)
 	for_each_child_of_node(node, pp) {
 		enum of_gpio_flags flags;
 
+		/* Ignore the button if status of node is disabled */
+		error = of_device_is_available(pp);
+		if (!error) {
+			dev_info(dev, "Button %s is ignored\n", pp->name);
+			pdata->nbuttons--;
+			continue;
+		}
+
 		button = &pdata->buttons[i++];
 
 		button->gpio = of_get_gpio_flags(pp, 0, &flags);