Input: elantech - query the resolution in query_info

The command ETP_RESOLUTION_QUERY also contains the bus information.
It is better to fetch it once, while we are querying for device
information.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: KT Liao <kt.liao@emc.com.tw>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 980dfd7..a2a14a3 100644 (file)
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1179,7 +1179,6 @@ static int elantech_set_input_params(struct psmouse *psmouse)
        struct elantech_data *etd = psmouse->private;
        struct elantech_device_info *info = &etd->info;
        unsigned int x_min = 0, y_min = 0, x_max = 0, y_max = 0, width = 0;
-       unsigned int x_res = 31, y_res = 31;
 
        if (elantech_set_range(psmouse, &x_min, &y_min, &x_max, &y_max, &width))
                return -1;
@@ -1232,13 +1231,6 @@ static int elantech_set_input_params(struct psmouse *psmouse)
                break;
 
        case 4:
-               if (elantech_get_resolution_v4(psmouse, &x_res, &y_res)) {
-                       /*
-                        * if query failed, print a warning and leave the values
-                        * zero to resemble synaptics.c behavior.
-                        */
-                       psmouse_warn(psmouse, "couldn't query resolution data.\n");
-               }
                elantech_set_buttonpad_prop(psmouse);
                __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
                /* For X to recognize me as touchpad. */
@@ -1267,11 +1259,11 @@ static int elantech_set_input_params(struct psmouse *psmouse)
                break;
        }
 
-       input_abs_set_res(dev, ABS_X, x_res);
-       input_abs_set_res(dev, ABS_Y, y_res);
+       input_abs_set_res(dev, ABS_X, info->x_res);
+       input_abs_set_res(dev, ABS_Y, info->y_res);
        if (info->hw_version > 1) {
-               input_abs_set_res(dev, ABS_MT_POSITION_X, x_res);
-               input_abs_set_res(dev, ABS_MT_POSITION_Y, y_res);
+               input_abs_set_res(dev, ABS_MT_POSITION_X, info->x_res);
+               input_abs_set_res(dev, ABS_MT_POSITION_Y, info->y_res);
        }
 
        etd->y_max = y_max;
@@ -1720,6 +1712,17 @@ static int elantech_query_info(struct psmouse *psmouse,
        /* The MSB indicates the presence of the trackpoint */
        info->has_trackpoint = (info->capabilities[0] & 0x80) == 0x80;
 
+       info->x_res = 31;
+       info->y_res = 31;
+       if (info->hw_version == 4) {
+               if (elantech_get_resolution_v4(psmouse,
+                                              &info->x_res,
+                                              &info->y_res)) {
+                       psmouse_warn(psmouse,
+                                    "failed to query resolution data.\n");
+               }
+       }
+
        return 0;
 }
 

diff --git a/drivers/input/mouse/elantech.h b/drivers/input/mouse/elantech.h
index d8ac27f..851df4c 100644 (file)
--- a/drivers/input/mouse/elantech.h
+++ b/drivers/input/mouse/elantech.h
@@ -120,6 +120,8 @@ struct elantech_device_info {
        unsigned char debug;
        unsigned char hw_version;
        unsigned int fw_version;
+       unsigned int x_res;
+       unsigned int y_res;
        bool paritycheck;
        bool jumpy_cursor;
        bool reports_pressure;