input: sensors: reinit sensors register when system resume

For some sensors are designed to support poweroff when system suspend,
so we need reinit register when system resume.

Change-Id: I4d61dc318562336781aa1010d1fbad447cc76b83
Signed-off-by: Bin Yang <yangbin@rock-chips.com>

diff --git a/drivers/input/sensors/sensor-dev.c b/drivers/input/sensors/sensor-dev.c
index cd18a44f397aae3738bde87b1b29c9b95bf5c470..01bbf40ce2b85a8f3003c2020fc6a37f4806f6cf 100755 (executable)
--- a/drivers/input/sensors/sensor-dev.c
+++ b/drivers/input/sensors/sensor-dev.c
@@ -394,7 +394,39 @@ static void sensor_resume(struct early_suspend *h)
                sensor->ops->resume(sensor->client);\r
 }\r
 #endif\r
-\r
+
+#ifdef CONFIG_PM
+static int sensor_of_suspend(struct device *dev)
+{
+       struct sensor_private_data *sensor = dev_get_drvdata(dev);
+
+       if (sensor->ops->suspend)
+               sensor->ops->suspend(sensor->client);
+
+       return 0;
+}
+
+static int sensor_of_resume(struct device *dev)
+{
+       struct sensor_private_data *sensor = dev_get_drvdata(dev);
+
+       if (sensor->ops->resume)
+               sensor->ops->resume(sensor->client);
+       if (sensor->pdata->power_off_in_suspend)
+               sensor_initial(sensor->client);
+
+       return 0;
+}
+
+static const struct dev_pm_ops sensor_pm_ops = {
+       SET_SYSTEM_SLEEP_PM_OPS(sensor_of_suspend, sensor_of_resume)
+};
+
+#define SENSOR_PM_OPS (&sensor_pm_ops)
+#else
+#define SENSOR_PM_OPS NULL
+#endif
+
 static int angle_dev_open(struct inode *inode, struct file *file)\r
 {\r
        //struct sensor_private_data *sensor = g_sensor[SENSOR_TYPE_ACCEL];     \r
@@ -1806,7 +1838,9 @@ int sensor_probe(struct i2c_client *client, const struct i2c_device_id *devid)
 \r
        of_property_read_u8(np,"address",&(pdata->address));\r
        of_get_property(np, "project_name", pdata->project_name);\r
-\r
+
+       of_property_read_u32(np, "power-off-in-suspend",
+                            &pdata->power_off_in_suspend);
 \r
        switch(pdata->layout)\r
        {\r
@@ -2304,10 +2338,11 @@ static struct i2c_driver sensor_driver = {
        .remove = sensor_remove,\r
        .shutdown = sensor_shut_down,\r
        .id_table = sensor_id,\r
-       .driver = {\r
-                  .owner = THIS_MODULE,\r
-                  .name = "sensors",\r
-                  .of_match_table = of_match_ptr(sensor_dt_ids),\r
+       .driver = {
+               .owner = THIS_MODULE,
+               .name = "sensors",
+               .of_match_table = of_match_ptr(sensor_dt_ids),
+               .pm = SENSOR_PM_OPS,
        },\r
 };\r
 \r

diff --git a/include/linux/sensor-dev.h b/include/linux/sensor-dev.h
index d979edcc4b2a6f99df2e3d41d457556935dc11be..b6a48b161cf383f315bae68218d2d1ad646a5fd9 100755 (executable)
--- a/include/linux/sensor-dev.h
+++ b/include/linux/sensor-dev.h
@@ -202,6 +202,7 @@ struct sensor_platform_data {
        signed char orientation[9];
        short m_layout[4][3][3];
        int* project_name;
+       int power_off_in_suspend;
 };
 
  struct gsensor_platform_data {