use CKSEL=1 for XPA

backend/genesys_gl843.c

@@ -2811,6 +2811,7 @@ gl843_init_regs_for_coarse_calibration (Genesys_Device * dev)
 				 dev->settings.yres,
 				 0,
 				 0,
+                                 /* XXX STEF XXX dpi instead of pixels !*/
 				 dev->sensor.optical_res / cksel,
 				 20,
 				 16,

backend/genesys_gl843.h

@@ -613,7 +613,7 @@ typedef struct {
  */
 static Sensor_Profile xpa_sensors[]={
 	{CCD_G4050  ,  600, 15624, 0x001c7f, 0x03ffff, 0x03ffff, 5168, 0, 0x2a, 0, 0, 0, 0x00, 0x00, 0x02, 0x00, 0x00,
-        {0x2c, 0x09, 0x22, 0xb8, 0x10, 0xf0, 0x33, 0x4c, 0x00, 0x2a, 0x30, 0x00, 0x00, 0x08} ,
+        {0x2c, 0x09, 0x22, 0xb8, 0x10, 0xf0, 0x33, 0x4c, 0x01, 0x2a, 0x30, 0x00, 0x00, 0x08} ,
         {0x0e, 0x11, 0x02, 0x05, 0x08, 0x0b, 0x6b, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x6f},
         },
 };