packages/services/gfx/mw/v2_0/src/drivers/mou_ps5.c

   1 /*
   2  * Microwindows touch screen driver for Psion 5
   3  */
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <unistd.h>
   7 #include <errno.h>
   8 #include <fcntl.h>
   9 #include <math.h>
  10 #include <sys/ioctl.h>
  11 #define _LINUX_TYPES_H
  12 #include <linux/fb.h>
  13 #include </linux/include/asm-arm/arch/touch_psion.h>
  14
  15 #include "device.h"
  16
  17 /* file descriptor for touch panel */
  18 static int pd_fd;
  19
  20 /* Hack extern to used when hiding the mouse cursor
  21  * There needs to be a better way to do this
  22 */
  23 extern SCREENDEVICE scrdev;
  24
  25 static int PD_Open(MOUSEDEVICE *pmd)
  26 {
  27         /*
  28          * open up the touch-panel device.
  29          * Return the fd if successful, or negative if unsuccessful.
  30          */
  31
  32         pd_fd = open("/dev/touch_psion", O_NONBLOCK);
  33         if (pd_fd < 0) {
  34                 fprintf(stderr, "Error %d opening touch panel\n", errno);
  35                 return -1;
  36         }
  37
  38         GdHideCursor(&scrdev);
  39         return pd_fd;
  40 }
  41
  42 static void PD_Close(void)
  43 {
  44         /* Close the touch panel device. */
  45         fprintf(stderr,"PD_Close called\n");
  46         if (pd_fd > 0)
  47                 close(pd_fd);
  48         pd_fd = 0;
  49 }
  50
  51 static int PD_GetButtonInfo(void)
  52 {
  53         /* get "mouse" buttons supported */
  54         return MWBUTTON_L;
  55 }
  56
  57 static void PD_GetDefaultAccel(int *pscale,int *pthresh)
  58 {
  59         /*
  60          * Get default mouse acceleration settings
  61          * This doesn't make sense for a touch panel.
  62          * Just return something inconspicuous for now.
  63          */
  64         *pscale = 3;
  65         *pthresh = 5;
  66 }
  67
  68 static int PD_Read(MWCOORD *px, MWCOORD *py, MWCOORD *pz, int *pb)
  69 {
  70         /* read a data point */
  71         struct touch_psion_event data;
  72         int bytes_read;
  73
  74         bytes_read = read(pd_fd, &data, sizeof(data));
  75
  76         if (bytes_read != sizeof(data)) {
  77                 if (errno == EINTR || errno == EAGAIN)
  78                         return 0;
  79                 return -1;
  80         }
  81
  82         *px = (MWCOORD)data.x_c;
  83         *py = (MWCOORD)data.y_c;
  84
  85         *pb = (data.down>0?MWBUTTON_L:0);
  86         *pz = 0;
  87
  88         if((*px == -1 || *py == -1) && *pb >= 0)
  89                 return 3;                       /* only have button data */
  90         if((*px == -1 || *py == -1) && *pb < 0)
  91                 return 0;                       /* don't have any data   */
  92         return 2;                               /* have full set of data */
  93 }
  94
  95 MOUSEDEVICE mousedev = {
  96         PD_Open,
  97         PD_Close,
  98         PD_GetButtonInfo,
  99         PD_GetDefaultAccel,
 100         PD_Read,
 101         NULL
 102 };
 103
 104 #ifdef TEST
 105 int main(int argc, char ** v)
 106 {
 107         MWCOORD         x, y, z;
 108         MWBUTTON        b;
 109         int result;
 110         int mouse = -1;
 111         printf("Opening touch panel...\n");
 112
 113         if((result=PD_Open(0)) < 0)
 114                 printf("Error %d, result %d opening touch-panel\n", errno, result);
 115
 116         /* This stuff below can be used to set some of the parameters of the
 117          * driver from the command line before going in to the test loop.
 118          * Could this have been done better? Yup.
 119          */
 120
 121         if(argc > 1) {
 122                 ioctl(result,1,atoi(v[1]));
 123                 fprintf(stderr,"Setting pressure to %d\n",atoi(v[1]));
 124         }
 125         if(argc > 2) {
 126                 ioctl(result,2,atoi(v[2]));
 127                 fprintf(stderr,"Setting updelay to %d\n",atoi(v[2]));
 128         }
 129         if(argc > 3) {
 130                 ioctl(result,3,atoi(v[3]));
 131                 fprintf(stderr,"Setting raw x to %d\n",atoi(v[3]));
 132         }
 133         if(argc > 4) {
 134                 ioctl(result,4,atoi(v[4]));
 135                 fprintf(stderr,"Setting raw y to %d\n",atoi(v[4]));
 136         }
 137         if(argc > 5) {
 138                 ioctl(result,5,atoi(v[5]));
 139                 fprintf(stderr,"Setting res x to %d\n",atoi(v[5]));
 140         }
 141         if(argc > 6) {
 142                 ioctl(result,6,atoi(v[6]));
 143                 fprintf(stderr,"Setting res y to %d\n",atoi(v[6]));
 144         }
 145         if(argc > 7) {
 146                 ioctl(result,7,atoi(v[7]));
 147                 fprintf(stderr,"Setting fudge x to %d\n",atoi(v[7]));
 148         }
 149         if(argc > 8) {
 150                 ioctl(result,8,atoi(v[8]));
 151                 fprintf(stderr,"Setting fudge y to %d\n",atoi(v[8]));
 152         }
 153         if(argc > 9) {
 154                 ioctl(result,9,atoi(v[9]));
 155                 fprintf(stderr,"Setting average sample to %d\n",atoi(v[9]));
 156         }
 157         if(argc > 10) {
 158                 ioctl(result,10,atoi(v[10]));
 159                 fprintf(stderr,"Setting raw min x to %d\n",atoi(v[10]));
 160         }
 161         if(argc > 11) {
 162                 ioctl(result,11,atoi(v[11]));
 163                 fprintf(stderr,"Setting raw min y to %d\n",atoi(v[11]));
 164         }
 165
 166         printf("Reading touch panel...\n");
 167
 168         while(1) {
 169                 result = PD_Read(&x, &y, &z, &b);
 170                 if( result > 0) {
 171                         if(mouse != b) {
 172                                 mouse = b;
 173                                 if(mouse)
 174                                         printf("Pen Down\n");
 175                                 else
 176                                         printf("Pen Up\n");
 177                         }
 178
 179                         printf("%d,%d,%d,%d,%d\n", result, x, y, z, b);
 180
 181                 }
 182         }
 183 }
 184 #endif