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 <rog...@ti.com>
> Acked-by: Mugunthan V N <mugunthan...@ti.com>
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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