Signed-off-by: Benjamin Tissoires <benjamin.tissoi...@redhat.com>
---
 drivers/input/rmi4/rmi_f11.c | 60 ++++++++++++++++++++++++++------------------
 1 file changed, 35 insertions(+), 25 deletions(-)

diff --git a/drivers/input/rmi4/rmi_f11.c b/drivers/input/rmi4/rmi_f11.c
index c3b757b..061530a 100644
--- a/drivers/input/rmi4/rmi_f11.c
+++ b/drivers/input/rmi4/rmi_f11.c
@@ -34,7 +34,6 @@
 #define DEFAULT_MAX_ABS_MT_ORIENTATION 1
 #define DEFAULT_MIN_ABS_MT_TRACKING_ID 1
 #define DEFAULT_MAX_ABS_MT_TRACKING_ID 10
-#define NAME_BUFFER_SIZE 256
 #define FUNCTION_NUMBER 0x11
 
 /** A note about RMI4 F11 register structure.
@@ -518,6 +517,7 @@ struct f11_2d_sensor {
        u32 type_a;     /* boolean but debugfs API requires u32 */
        enum rmi_f11_sensor_type sensor_type;
        struct input_dev *input;
+       bool unified_input;
        struct rmi_function *fn;
        char input_phys[NAME_BUFFER_SIZE];
        u8 report_abs;
@@ -737,7 +737,8 @@ static void rmi_f11_finger_handler(struct f11_data *f11,
        }
 
        input_mt_sync_frame(sensor->input);
-       input_sync(sensor->input);
+       if (!sensor->unified_input)
+               input_sync(sensor->input);
 }
 
 static int f11_2d_construct_data(struct f11_2d_sensor *sensor)
@@ -1373,35 +1374,42 @@ static int rmi_f11_initialize(struct rmi_function *fn)
 static int rmi_f11_register_devices(struct rmi_function *fn)
 {
        struct rmi_device *rmi_dev = fn->rmi_dev;
+       struct rmi_driver_data *drv_data = dev_get_drvdata(&rmi_dev->dev);
        struct f11_data *f11 = dev_get_drvdata(&fn->dev);
        struct input_dev *input_dev;
        struct rmi_driver *driver = rmi_dev->driver;
        struct f11_2d_sensor *sensor = &f11->sensor;
        int rc;
 
-       input_dev = input_allocate_device();
+       if (!drv_data->input) {
+               input_dev = input_allocate_device();
+       } else {
+               input_dev = drv_data->input;
+               sensor->unified_input = true;
+       }
        if (!input_dev) {
                rc = -ENOMEM;
                goto error_unregister;
        }
 
        sensor->input = input_dev;
-       if (driver->set_input_params) {
-               rc = driver->set_input_params(rmi_dev, input_dev);
-               if (rc < 0) {
-                       dev_err(&fn->dev,
-                               "%s: Error in setting input device.\n",
-                               __func__);
-                       goto error_unregister;
+
+       if (!sensor->unified_input) {
+               if (driver->set_input_params) {
+                       rc = driver->set_input_params(rmi_dev, input_dev);
+                       if (rc < 0) {
+                               dev_err(&fn->dev,
+                                       "%s: Error in setting input device.\n",
+                                       __func__);
+                               goto error_unregister;
+                       }
                }
+               sprintf(sensor->input_phys, "%s.abs/input0",
+                       dev_name(&fn->dev));
+               input_dev->phys = sensor->input_phys;
+               input_dev->dev.parent = &rmi_dev->dev;
        }
-       sprintf(sensor->input_phys, "%s.abs/input0",
-               dev_name(&fn->dev));
-       input_dev->phys = sensor->input_phys;
-       input_dev->dev.parent = &rmi_dev->dev;
-       input_set_drvdata(input_dev, f11);
 
-       set_bit(EV_SYN, input_dev->evbit);
        set_bit(EV_ABS, input_dev->evbit);
        input_set_capability(input_dev, EV_KEY, BTN_TOUCH);
 
@@ -1413,19 +1421,21 @@ static int rmi_f11_register_devices(struct rmi_function 
*fn)
                set_bit(REL_X, input_dev->relbit);
                set_bit(REL_Y, input_dev->relbit);
        }
-       rc = input_register_device(input_dev);
-       if (rc) {
-               input_free_device(input_dev);
-               sensor->input = NULL;
-               goto error_unregister;
+       if (!sensor->unified_input) {
+               rc = input_register_device(input_dev);
+               if (rc) {
+                       input_free_device(input_dev);
+                       sensor->input = NULL;
+                       goto error_unregister;
+               }
        }
 
        return 0;
 
 error_unregister:
-       if (f11->sensor.input) {
-               input_unregister_device(f11->sensor.input);
-               f11->sensor.input = NULL;
+       if (!sensor->unified_input && sensor->input) {
+               input_unregister_device(sensor->input);
+               sensor->input = NULL;
        }
 
        return rc;
@@ -1525,7 +1535,7 @@ static void rmi_f11_remove(struct rmi_function *fn)
 {
        struct f11_data *f11 = dev_get_drvdata(&fn->dev);
 
-       if (f11->sensor.input)
+       if (!f11->sensor.unified_input && f11->sensor.input)
                input_unregister_device(f11->sensor.input);
 }
 
-- 
2.4.3

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