Re: [PATCH v5 6/7] Input: pixcir_i2c_ts: Implement wakeup from suspend

[Dmitry Torokhov]

On Tue, May 06, 2014 at 02:06:11PM +0300, Roger Quadros wrote:
> Improve the suspend and resume handlers to allow the device
> to wakeup the system from suspend.
> 
> Signed-off-by: Roger Quadros <rogerq@xxxxxx>
> Acked-by: Mugunthan V N <mugunthanvnm@xxxxxx>

Applied, thank you.

> ---
>  drivers/input/touchscreen/pixcir_i2c_ts.c | 47 ++++++++++++++++++++++++++++---
>  1 file changed, 43 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c
> index 0728c04..b0f7680 100644
> --- a/drivers/input/touchscreen/pixcir_i2c_ts.c
> +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c
> @@ -348,21 +348,59 @@ static void pixcir_input_close(struct input_dev *dev)
>  static int pixcir_i2c_ts_suspend(struct device *dev)
>  {
>  	struct i2c_client *client = to_i2c_client(dev);
> +	struct pixcir_i2c_ts_data *ts = i2c_get_clientdata(client);
> +	struct input_dev *input = ts->input;
> +	int ret = 0;
> +
> +	mutex_lock(&input->mutex);
> +
> +	if (device_may_wakeup(&client->dev)) {
> +		if (!input->users) {
> +			ret = pixcir_start(ts);
> +			if (ret) {
> +				dev_err(dev, "Failed to start\n");
> +				goto unlock;
> +			}
> +		}
>  
> -	if (device_may_wakeup(&client->dev))
>  		enable_irq_wake(client->irq);
> +	} else if (input->users) {
> +		ret = pixcir_stop(ts);
> +	}
>  
> -	return 0;
> +unlock:
> +	mutex_unlock(&input->mutex);
> +
> +	return ret;
>  }
>  
>  static int pixcir_i2c_ts_resume(struct device *dev)
>  {
>  	struct i2c_client *client = to_i2c_client(dev);
> +	struct pixcir_i2c_ts_data *ts = i2c_get_clientdata(client);
> +	struct input_dev *input = ts->input;
> +	int ret = 0;
> +
> +	mutex_lock(&input->mutex);
>  
> -	if (device_may_wakeup(&client->dev))
> +	if (device_may_wakeup(&client->dev)) {
>  		disable_irq_wake(client->irq);
>  
> -	return 0;
> +		if (!input->users) {
> +			ret = pixcir_stop(ts);
> +			if (ret) {
> +				dev_err(dev, "Failed to stop\n");
> +				goto unlock;
> +			}
> +		}
> +	} else if (input->users) {
> +		ret = pixcir_start(ts);
> +	}
> +
> +unlock:
> +	mutex_unlock(&input->mutex);
> +
> +	return ret;
>  }
>  #endif
>  
> @@ -469,6 +507,7 @@ static int pixcir_i2c_ts_probe(struct i2c_client *client,
>  	if (error)
>  		return error;
>  
> +	i2c_set_clientdata(client, tsdata);
>  	device_init_wakeup(&client->dev, 1);
>  
>  	return 0;
> -- 
> 1.8.3.2
> 

-- 
Dmitry
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