[PATCH v2 1/1] input: imx_sc_key: Enable wakeup according to dts property wakeup-source

[PATCH v2 1/1] input: imx_sc_key: Enable wakeup according to dts property wakeup-source

[Frank Li]

From: Abel Vesa <abel.vesa@nxp.com>

Enable default wakeup according to dts property 'wakeup-source'.

Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
Reviewed-by: Nitin Garg <nitin.garg@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
Change from v1 to v2
- change int to bool
- move of_property_read_bool() just before device_init_wakeup()
- drop !!
---
 drivers/input/keyboard/imx_sc_key.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/input/keyboard/imx_sc_key.c b/drivers/input/keyboard/imx_sc_key.c
index d18839f1f4f60..fc1492088b645 100644
--- a/drivers/input/keyboard/imx_sc_key.c
+++ b/drivers/input/keyboard/imx_sc_key.c
@@ -110,8 +110,10 @@ static void imx_sc_key_action(void *data)
 
 static int imx_sc_key_probe(struct platform_device *pdev)
 {
+	struct device_node *np = pdev->dev.of_node;
 	struct imx_key_drv_data *priv;
 	struct input_dev *input;
+	bool wakeup;
 	int error;
 
 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
@@ -151,6 +153,9 @@ static int imx_sc_key_probe(struct platform_device *pdev)
 	priv->input = input;
 	platform_set_drvdata(pdev, priv);
 
+	wakeup = of_property_read_bool(np, "wakeup-source");
+	device_init_wakeup(&pdev->dev, wakeup);
+
 	error = imx_scu_irq_group_enable(SC_IRQ_GROUP_WAKE, SC_IRQ_BUTTON,
 					 true);
 	if (error) {
-- 
2.34.1

Re: [PATCH v2 1/1] input: imx_sc_key: Enable wakeup according to dts property wakeup-source

[Dmitry Torokhov]

Hi Frank,

On Fri, Jul 19, 2024 at 11:22:58AM -0400, Frank Li wrote:
> From: Abel Vesa <abel.vesa@nxp.com>
> 
> Enable default wakeup according to dts property 'wakeup-source'.
> 
> Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
> Reviewed-by: Nitin Garg <nitin.garg@nxp.com>
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ---
> Change from v1 to v2
> - change int to bool
> - move of_property_read_bool() just before device_init_wakeup()
> - drop !!
> ---
>  drivers/input/keyboard/imx_sc_key.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/input/keyboard/imx_sc_key.c b/drivers/input/keyboard/imx_sc_key.c
> index d18839f1f4f60..fc1492088b645 100644
> --- a/drivers/input/keyboard/imx_sc_key.c
> +++ b/drivers/input/keyboard/imx_sc_key.c
> @@ -110,8 +110,10 @@ static void imx_sc_key_action(void *data)
>  
>  static int imx_sc_key_probe(struct platform_device *pdev)
>  {
> +	struct device_node *np = pdev->dev.of_node;
>  	struct imx_key_drv_data *priv;
>  	struct input_dev *input;
> +	bool wakeup;
>  	int error;
>  
>  	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
> @@ -151,6 +153,9 @@ static int imx_sc_key_probe(struct platform_device *pdev)
>  	priv->input = input;
>  	platform_set_drvdata(pdev, priv);
>  
> +	wakeup = of_property_read_bool(np, "wakeup-source");

The driver uses generic device properties, why do you use OF-specific
variant here?

> +	device_init_wakeup(&pdev->dev, wakeup);
> +

How does this actually work? Doesn't the call directly below
unconditionally configures button as a wakeup source?

>  	error = imx_scu_irq_group_enable(SC_IRQ_GROUP_WAKE, SC_IRQ_BUTTON,
>  					 true);
>  	if (error) {

Thanks.

-- 
Dmitry

Re: [PATCH v2 1/1] input: imx_sc_key: Enable wakeup according to dts property wakeup-source

[Frank Li]

On Wed, Jul 24, 2024 at 11:21:27AM -0700, Dmitry Torokhov wrote:
> Hi Frank,
> 
> On Fri, Jul 19, 2024 at 11:22:58AM -0400, Frank Li wrote:
> > From: Abel Vesa <abel.vesa@nxp.com>
> > 
> > Enable default wakeup according to dts property 'wakeup-source'.
> > 
> > Signed-off-by: Abel Vesa <abel.vesa@nxp.com>
> > Reviewed-by: Nitin Garg <nitin.garg@nxp.com>
> > Signed-off-by: Frank Li <Frank.Li@nxp.com>
> > ---
> > Change from v1 to v2
> > - change int to bool
> > - move of_property_read_bool() just before device_init_wakeup()
> > - drop !!
> > ---
> >  drivers/input/keyboard/imx_sc_key.c | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/drivers/input/keyboard/imx_sc_key.c b/drivers/input/keyboard/imx_sc_key.c
> > index d18839f1f4f60..fc1492088b645 100644
> > --- a/drivers/input/keyboard/imx_sc_key.c
> > +++ b/drivers/input/keyboard/imx_sc_key.c
> > @@ -110,8 +110,10 @@ static void imx_sc_key_action(void *data)
> >  
> >  static int imx_sc_key_probe(struct platform_device *pdev)
> >  {
> > +	struct device_node *np = pdev->dev.of_node;
> >  	struct imx_key_drv_data *priv;
> >  	struct input_dev *input;
> > +	bool wakeup;
> >  	int error;
> >  
> >  	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
> > @@ -151,6 +153,9 @@ static int imx_sc_key_probe(struct platform_device *pdev)
> >  	priv->input = input;
> >  	platform_set_drvdata(pdev, priv);
> >  
> > +	wakeup = of_property_read_bool(np, "wakeup-source");
> 
> The driver uses generic device properties, why do you use OF-specific
> variant here?

I think it just show default if it is wakeup source.

Do you think we just need call device_init_wakeup(&pdev->dev, wakeup) to
maintance consisent between software wakeup enable status with SCU wakeup
enable status?

Since most case power-key should be wakeup source.

> 
> > +	device_init_wakeup(&pdev->dev, wakeup);
> > +
> 
> How does this actually work? Doesn't the call directly below
> unconditionally configures button as a wakeup source?

Good capture, I am also strange why it can wakeup even dts have not set
wakeup-source.

Frank

> 
> >  	error = imx_scu_irq_group_enable(SC_IRQ_GROUP_WAKE, SC_IRQ_BUTTON,
> >  					 true);
> >  	if (error) {
> 
> Thanks.
> 
> -- 
> Dmitry