mtk android tp 运行方式更改

将tp运行方式由中断改为轮询模式。

步骤1. probe 中创建线程

thread = kthread_run(my_touch_event_handler, 0, "msg2133");

步骤2. 完成轮询函数

[cpp] view plaincopyprint?

1. static int my_touch_event_handler() 
2. { 
3.     int pending = 0; 
4.     struct TouchInfoT cinfo, pinfo; 
5.     struct sched_param param = { .sched_priority = RTPM_PRIO_TPD }; 
6.     sched_setscheduler(current, SCHED_RR, & param); 
7.  
8.     memset(&cinfo, 0, sizeof(struct TouchInfoT)); 
9.     memset(&pinfo, 0, sizeof(struct TouchInfoT)); 
10.     do 
11.     { 
12.     printk("my_touch_event_handler-------------------\n"); 
13.         set_current_state(TASK_INTERRUPTIBLE);  
14.         if(!kthread_should_stop()) 
15.         { 
16.             ///TPD_DEBUG_CHECK_NO_RESPONSE; 
17.             do 
18.             { 
19.                 //if (pending)  
20.                     wait_event_interruptible_timeout(waiter,  0, HZ/20); 
21.                 //else  
22.                 //  wait_event_interruptible_timeout(waiter, 0, HZ*2); 
23.                   
24.             }while(0); 
25.               
26.             //if (tpd_flag == 0 && !pending)  
27.                 //continue; // if timeout for no touch, then re-wait. 
28.               
29.             //if (tpd_flag != 0 && pending > 0)  
30.                 //pending = 0; 
31.               
32.             tpd_flag = 0; 
33.             //TPD_DEBUG_SET_TIME;  
34.         } 
35.         set_current_state(TASK_RUNNING); 
36.  
37.         if (tpd_touchinfo(&cinfo, &pinfo)) 
38.         { 
39.             if(cinfo.count >0) 
40.             { 
41.                 tpd_down(cinfo.x1, cinfo.y1, cinfo.pressure); 
42.                 if(cinfo.count>1) 
43.                 {                
44.                     tpd_down(cinfo.x2, cinfo.y2, cinfo.pressure); 
45.                 } 
46.                 input_sync(tpd->dev);         
47.                 //TPD_LOGV("[MSG2133]press  --->\n"); 
48.             } 
49.             else if(cinfo.count==0 && pinfo.count!=0) 
50.             { 
51.              
52.          
53.                 input_mt_sync(tpd->dev); 
54.                 input_sync(tpd->dev); 
55.              
56.                 //TPD_LOGV("[MSG2133]release --->\n"); 
57.             } 
58.         }           
59.     }while(1); 
60.  
61.     return 0; 
62. } 

static int my_touch_event_handler(){int pending = 0;struct TouchInfoT cinfo, pinfo;struct sched_param param = { .sched_priority = RTPM_PRIO_TPD };sched_setscheduler(current, SCHED_RR, & param);    memset(&cinfo, 0, sizeof(struct TouchInfoT));    memset(&pinfo, 0, sizeof(struct TouchInfoT));do{printk("my_touch_event_handler-------------------\n");set_current_state(TASK_INTERRUPTIBLE); if(!kthread_should_stop()){///TPD_DEBUG_CHECK_NO_RESPONSE;do{//if (pending) wait_event_interruptible_timeout(waiter,  0, HZ/20);//else //wait_event_interruptible_timeout(waiter, 0, HZ*2); }while(0); //if (tpd_flag == 0 && !pending) //continue; // if timeout for no touch, then re-wait. //if (tpd_flag != 0 && pending > 0)//pending = 0; tpd_flag = 0;//TPD_DEBUG_SET_TIME; }set_current_state(TASK_RUNNING);if (tpd_touchinfo(&cinfo, &pinfo)){if(cinfo.count >0){tpd_down(cinfo.x1, cinfo.y1, cinfo.pressure);if(cinfo.count>1)             {            tpd_down(cinfo.x2, cinfo.y2, cinfo.pressure);}input_sync(tpd->dev);//TPD_LOGV("[MSG2133]press  --->\n");}else if(cinfo.count==0 && pinfo.count!=0){            input_mt_sync(tpd->dev);    input_sync(tpd->dev);//TPD_LOGV("[MSG2133]release --->\n"); }}   }while(1);return 0;}