input/ff: extend ioctrl to support get effect duration

support obtain effect duration interface

Signed-off-by: fangpeina <fangpeina@xiaomi.com>

drivers/input/ff_upper.c

@@ -391,6 +391,19 @@ static int ff_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
         }
         break;
 
+      case EVIOCGDURATION:
+        {
+          if (upper->lower->get_duration == NULL)
+            {
+              ret = -ENOTSUP;
+              break;
+            }
+
+          ret = upper->lower->get_duration(upper->lower,
+                (FAR struct ff_effect *)(uintptr_t)arg);
+        }
+        break;
+
       case EVIOCSETCALIBDATA:
         {
           if (upper->lower->set_calibvalue == NULL)

include/nuttx/input/ff.h

@@ -107,18 +107,24 @@
 
 #define EVIOCGEFFECTS     _FFIOC(3)
 
+/* This cmd use to get the duration of the effect.
+ * Arg: pointer to address of struct ff_effect, return the status.
+ */
+
+#define EVIOCGDURATION    _FFIOC(4)
+
 /* This cmd use to calibrate the device and return the calibration value.
  * Arg: pointer to address of integer array value, return the calibration
  * value.
  */
 
-#define EVIOCCALIBRATE    _FFIOC(4)
+#define EVIOCCALIBRATE    _FFIOC(5)
 
 /* This cmd use to set calibration value for the device.
  * Arg: pointer to address of the calibration value which should be set.
  */
 
-#define EVIOCSETCALIBDATA _FFIOC(5)
+#define EVIOCSETCALIBDATA _FFIOC(6)
 
 /****************************************************************************
  * Public Types
@@ -416,6 +422,11 @@ struct ff_lowerhalf_s
 
   CODE void (*destroy)(FAR struct ff_lowerhalf_s *lower);
 
+  /* Called to get the duration of the effect. */
+
+  CODE int (*get_duration)(FAR struct ff_lowerhalf_s *lower,
+                           FAR struct ff_effect *effect);
+
   /* The calibration value to be written in or the non-volatile memory of the
    * device or dedicated registers. At each power-on, so that the values read
    * from the device are already corrected. When the device is calibrated,