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[1/2] input: gpio-keys: Disable hardware on suspend

Message ID 20121125083229.GB21091@core.coreip.homeip.net (mailing list archive)
State New, archived
Headers show

Commit Message

Dmitry Torokhov Nov. 25, 2012, 8:32 a.m. UTC 
On Thu, Nov 22, 2012 at 01:23:36PM +0000, Lee Jones wrote:
> From: Jonas Aaberg <jonas.aberg@stericsson.com>
> 
> Disable hardware if active when suspending if the hw can not
> wake the system from suspend.

How about below instead (needs the other patch I have just sent out)?

Thanks.

Comments

Lee Jones Nov. 26, 2012, 9:05 a.m. UTC | #1 
> On Thu, Nov 22, 2012 at 01:23:36PM +0000, Lee Jones wrote:
> > From: Jonas Aaberg <jonas.aberg@stericsson.com>
> > 
> > Disable hardware if active when suspending if the hw can not
> > wake the system from suspend.
> 
> How about below instead (needs the other patch I have just sent out)?

Sorry Dmitry, I'm a little confused. What does this mean?

> Input: gpio-keys - disable hardware on suspend
> 
> From: Jonas Aaberg <jonas.aberg@stericsson.com>
> 
> Disable hardware if active when suspending if the hw can not
> wake the system from suspend.
> 
> Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
> Signed-off-by: Philippe Langlais <philippe.langlais@linaro.org>
> Reviewed-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> ---
>  drivers/input/keyboard/gpio_keys.c |   27 ++++++++++++++++++++++-----
>  1 file changed, 22 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
> index c7764ca..79435de 100644
> --- a/drivers/input/keyboard/gpio_keys.c
> +++ b/drivers/input/keyboard/gpio_keys.c
> @@ -803,6 +803,7 @@ static int gpio_keys_remove(struct platform_device *pdev)
>  static int gpio_keys_suspend(struct device *dev)
>  {
>  	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
> +	struct input_dev *input = ddata->input;
>  	int i;
>  
>  	if (device_may_wakeup(dev)) {
> @@ -811,6 +812,11 @@ static int gpio_keys_suspend(struct device *dev)
>  			if (bdata->button->wakeup)
>  				enable_irq_wake(bdata->irq);
>  		}
> +	} else {
> +		mutex_lock(&input->mutex);
> +		if (input->users)
> +			gpio_keys_close(input);
> +		mutex_unlock(&input->mutex);
>  	}
>  
>  	return 0;
> @@ -819,16 +825,27 @@ static int gpio_keys_suspend(struct device *dev)
>  static int gpio_keys_resume(struct device *dev)
>  {
>  	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
> +	struct input_dev *input = ddata->input;
> +	int error = 0;
>  	int i;
>  
> -	for (i = 0; i < ddata->pdata->nbuttons; i++) {
> -		struct gpio_button_data *bdata = &ddata->data[i];
> -		if (bdata->button->wakeup && device_may_wakeup(dev))
> -			disable_irq_wake(bdata->irq);
> +	if (device_may_wakeup(dev)) {
> +		for (i = 0; i < ddata->pdata->nbuttons; i++) {
> +			struct gpio_button_data *bdata = &ddata->data[i];
> +			if (bdata->button->wakeup)
> +				disable_irq_wake(bdata->irq);
> +		}
> +	} else {
> +		mutex_lock(&input->mutex);
> +		if (input->users)
> +			error = gpio_keys_open(input);
> +		mutex_unlock(&input->mutex);
>  	}
>  
> -	gpio_keys_report_state(ddata);
> +	if (error)
> +		return error;
>  
> +	gpio_keys_report_state(ddata);
>  	return 0;
>  }
>  #endif
Dmitry Torokhov Nov. 26, 2012, 9:32 a.m. UTC | #2 
On Mon, Nov 26, 2012 at 09:05:03AM +0000, Lee Jones wrote:
> > On Thu, Nov 22, 2012 at 01:23:36PM +0000, Lee Jones wrote:
> > > From: Jonas Aaberg <jonas.aberg@stericsson.com>
> > > 
> > > Disable hardware if active when suspending if the hw can not
> > > wake the system from suspend.
> > 
> > How about below instead (needs the other patch I have just sent out)?
> 
> Sorry Dmitry, I'm a little confused. What does this mean?

The modified version of the patch I have sent depends on the other patch
to gpio-keys that introduces gpio_keys_report_state() that I believe you
have been CCed.

Thanks.
Linus Walleij Dec. 1, 2012, 5:01 p.m. UTC | #3 
On Sun, Nov 25, 2012 at 9:32 AM, Dmitry Torokhov
<dmitry.torokhov@gmail.com> wrote:
> On Thu, Nov 22, 2012 at 01:23:36PM +0000, Lee Jones wrote:
>> From: Jonas Aaberg <jonas.aberg@stericsson.com>
>>
>> Disable hardware if active when suspending if the hw can not
>> wake the system from suspend.
>
> How about below instead (needs the other patch I have just sent out)?

LooksGoodToMe(TM)

Acked-by.

Yours,
Linus Walleij
diff mbox

Patch

diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index c7764ca..79435de 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -803,6 +803,7 @@  static int gpio_keys_remove(struct platform_device *pdev)
 static int gpio_keys_suspend(struct device *dev)
 {
 	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
+	struct input_dev *input = ddata->input;
 	int i;
 
 	if (device_may_wakeup(dev)) {
@@ -811,6 +812,11 @@  static int gpio_keys_suspend(struct device *dev)
 			if (bdata->button->wakeup)
 				enable_irq_wake(bdata->irq);
 		}
+	} else {
+		mutex_lock(&input->mutex);
+		if (input->users)
+			gpio_keys_close(input);
+		mutex_unlock(&input->mutex);
 	}
 
 	return 0;
@@ -819,16 +825,27 @@  static int gpio_keys_suspend(struct device *dev)
 static int gpio_keys_resume(struct device *dev)
 {
 	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
+	struct input_dev *input = ddata->input;
+	int error = 0;
 	int i;
 
-	for (i = 0; i < ddata->pdata->nbuttons; i++) {
-		struct gpio_button_data *bdata = &ddata->data[i];
-		if (bdata->button->wakeup && device_may_wakeup(dev))
-			disable_irq_wake(bdata->irq);
+	if (device_may_wakeup(dev)) {
+		for (i = 0; i < ddata->pdata->nbuttons; i++) {
+			struct gpio_button_data *bdata = &ddata->data[i];
+			if (bdata->button->wakeup)
+				disable_irq_wake(bdata->irq);
+		}
+	} else {
+		mutex_lock(&input->mutex);
+		if (input->users)
+			error = gpio_keys_open(input);
+		mutex_unlock(&input->mutex);
 	}
 
-	gpio_keys_report_state(ddata);
+	if (error)
+		return error;
 
+	gpio_keys_report_state(ddata);
 	return 0;
 }
 #endif