diff options
author | Roger Quadros <rogerq@ti.com> | 2014-05-18 22:49:20 -0700 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2014-05-18 23:25:57 -0700 |
commit | 7cdcb8d104e6f0ec5d253d29e4849cdb2cf03aed (patch) | |
tree | f01aa0053843adc022f7569c1d44d42ff65b629b /drivers/input/touchscreen/pixcir_i2c_ts.c | |
parent | 0dfc8d41bfa091a61354eea73199a5af0eaae9c0 (diff) | |
download | linux-7cdcb8d104e6f0ec5d253d29e4849cdb2cf03aed.tar.bz2 |
Input: pixcir_i2c_ts - implement wakeup from suspend
Improve the suspend and resume handlers to allow the device
to wakeup the system from suspend.
Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen/pixcir_i2c_ts.c')
-rw-r--r-- | drivers/input/touchscreen/pixcir_i2c_ts.c | 47 |
1 files changed, 43 insertions, 4 deletions
diff --git a/drivers/input/touchscreen/pixcir_i2c_ts.c b/drivers/input/touchscreen/pixcir_i2c_ts.c index f2c0ae18e24a..19c6c0fdc94b 100644 --- a/drivers/input/touchscreen/pixcir_i2c_ts.c +++ b/drivers/input/touchscreen/pixcir_i2c_ts.c @@ -264,21 +264,59 @@ 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 @@ -366,6 +404,7 @@ 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; |