触摸屏的问题（mini6410）

自己写了个IIC的触摸屏的driver，基于mini6410的板子
linux2.6.28.6的内核。
用evtest测试有数据，但qt无反应？
evtest测试数据如下，点击和触摸touchscreen的时候有下面的数据，说明坐标已经报到linux的input subsystem了。

复制代码 Event: time 1281063192.541522, type 3 (Absolute), code 0 (X), value 199 Event: time 1281063192.541538, type 3 (Absolute), code 1 (Y), value 528 Event: time 1281063192.541545, type 3 (Absolute), code 24 (Pressure), value 1 Event: time 1281063192.541549, type 1 (Key), code 330 (Touch), value 1 Event: time 1281063192.541554, -------------- Report Sync ------------ Event: time 1281063193.831511, type 3 (Absolute), code 24 (Pressure), value 0 Event: time 1281063193.831529, type 1 (Key), code 330 (Touch), value 0 Event: time 1281063193.831533, -------------- Report Sync ------------ Event: time 1281063194.806524, type 3 (Absolute), code 0 (X), value 212 Event: time 1281063194.806542, type 3 (Absolute), code 1 (Y), value 485 Event: time 1281063194.806548, type 3 (Absolute), code 24 (Pressure), value 1 Event: time 1281063194.806552, type 1 (Key), code 330 (Touch), value 1 Event: time 1281063194.806557, -------------- Report Sync ------------ Event: time 1281063194.826526, type 3 (Absolute), code 1 (Y), value 484 Event: time 1281063194.826545, -------------- Report Sync ------------ Event: time 1281063195.416508, type 3 (Absolute), code 24 (Pressure), value 0 Event: time 1281063195.416523, type 1 (Key), code 330 (Touch), value 0 Event: time 1281063195.416526, -------------- Report Sync ------------ Event: time 1281063195.866519, type 3 (Absolute), code 0 (X), value 215 Event: time 1281063195.866537, type 3 (Absolute), code 1 (Y), value 504 Event: time 1281063195.866543, type 3 (Absolute), code 24 (Pressure), value 1 Event: time 1281063195.866547, type 1 (Key), code 330 (Touch), value 1 Event: time 1281063195.866552, -------------- Report Sync ------------ Event: time 1281063195.886538, type 3 (Absolute), code 0 (X), value 216 Event: time 1281063195.886556, type 3 (Absolute), code 1 (Y), value 502 Event: time 1281063195.886566, -------------- Report Sync ------------ Event: time 1281063195.991522, type 3 (Absolute), code 1 (Y), value 496 Event: time 1281063195.991542, -------------- Report Sync ------------ Event: time 1281063196.011526, type 3 (Absolute), code 1 (Y), value 497 Event: time 1281063196.011547, -------------- Report Sync ------------ Event: time 1281063196.296509, type 3 (Absolute), code 24 (Pressure), value 0 Event: time 1281063196.296524, type 1 (Key), code 330 (Touch), value 0 Event: time 1281063196.296528, -------------- Report Sync ------------ Event: time 1281063199.296517, type 3 (Absolute), code 0 (X), value 210 Event: time 1281063199.296533, type 3 (Absolute), code 1 (Y), value 557 Event: time 1281063199.296539, type 3 (Absolute), code 24 (Pressure), value 1 Event: time 1281063199.296543, type 1 (Key), code 330 (Touch), value 1 Event: time 1281063199.296548, -------------- Report Sync ------------ Event: time 1281063199.316525, type 3 (Absolute), code 0 (X), value 202 Event: time 1281063199.316550, -------------- Report Sync ------------ Event: time 1281063199.336522, type 3 (Absolute), code 0 (X), value 195 Event: time 1281063199.336538, type 3 (Absolute), code 1 (Y), value 556 Event: time 1281063199.336546, -------------- Report Sync ------------ Event: time 1281063199.356524, type 3 (Absolute), code 0 (X), value 188 Event: time 1281063199.356542, type 3 (Absolute), code 1 (Y), value 555 Event: time 1281063199.356552, -------------- Report Sync ------------ Event: time 1281063199.376523, type 3 (Absolute), code 0 (X), value 178 Event: time 1281063199.376540, type 3 (Absolute), code 1 (Y), value 554 Event: time 1281063199.376548, -------------- Report Sync ------------ Event: time 1281063199.396520, type 3 (Absolute), code 0 (X), value 167 Event: time 1281063199.396535, type 3 (Absolute), code 1 (Y), value 553 Event: time 1281063199.396545, -------------- Report Sync ------------