drivers/lcd : add ioctl passthrough for LCD driver

Some LCD vendors support unit test commands, we should passthrough the ioctl
commands to drivers.

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

drivers/lcd/lcd_dev.c

@@ -292,7 +292,17 @@ static int lcddev_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
       }
       break;
     default:
-      ret = -EINVAL;
+      {
+        if (priv->lcd_ptr->ioctl)
+          {
+            ret = priv->lcd_ptr->ioctl(priv->lcd_ptr, cmd, arg);
+          }
+        else
+          {
+            gerr("ERROR: Unsupported IOCTL command: %d\n", cmd);
+            ret = -ENOTTY;
+          }
+      }
       break;
     }
 

drivers/lcd/lcd_framebuffer.c

@@ -400,7 +400,7 @@ static int lcdfb_putcmap(FAR struct fb_vtable_s *vtable,
 
 #ifdef CONFIG_FB_HWCURSOR
 static int lcdfb_getcursor(FAR struct fb_vtable_s *vtable,
-                        FAR struct fb_cursorattrib_s *attrib)
+                           FAR struct fb_cursorattrib_s *attrib)
 {
   lcdinfo("vtable=%p attrib=%p\n", vtable, attrib);
   FAR struct lcdfb_dev_s *priv;
@@ -435,7 +435,7 @@ static int lcdfb_getcursor(FAR struct fb_vtable_s *vtable,
 
 #ifdef CONFIG_FB_HWCURSOR
 static int lcdfb_setcursor(FAR struct fb_vtable_s *vtable,
-                       FAR struct fb_setcursor_s *settings)
+                           FAR struct fb_setcursor_s *settings)
 {
   FAR struct lcdfb_dev_s *priv;
   FAR struct lcd_dev_s *lcd;
@@ -492,6 +492,38 @@ static int lcdfb_setpower(FAR struct fb_vtable_s *vtable, FAR int power)
   return ret;
 }
 
+/****************************************************************************
+ * Name: lcdfb_ioctl
+ ****************************************************************************/
+
+static int lcdfb_ioctl(FAR struct fb_vtable_s *vtable,
+                       int cmd, unsigned long arg)
+{
+  int ret = -EINVAL;
+  FAR struct lcdfb_dev_s *priv;
+  FAR struct lcd_dev_s *lcd;
+
+  DEBUGASSERT(vtable != NULL);
+
+  priv = (FAR struct lcdfb_dev_s *)vtable;
+
+  if (priv != NULL)
+    {
+      lcd = priv->lcd;
+
+      if (lcd->ioctl)
+        {
+          ret = lcd->ioctl(lcd, cmd, arg);
+        }
+      else
+        {
+          ret = -ENOTTY;
+        }
+    }
+
+  return ret;
+}
+
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -548,6 +580,7 @@ int up_fbinitialize(int display)
 #endif
   priv->vtable.updatearea   = lcdfb_updateearea,
   priv->vtable.setpower     = lcdfb_setpower,
+  priv->vtable.ioctl        = lcdfb_ioctl,
 
 #ifdef CONFIG_LCD_EXTERNINIT
   /* Use external graphics driver initialization */

include/nuttx/lcd/lcd.h

@@ -264,6 +264,10 @@ struct lcd_dev_s
 
   int (*getareaalign)(FAR struct lcd_dev_s *dev,
                       FAR struct lcddev_area_align_s *align);
+
+  /* Passthrough unknown ioctl commands. */
+
+  int (*ioctl)(FAR struct lcd_dev_s *dev, int cmd, unsigned long arg);
 };
 
 /****************************************************************************