nuttx: Support for the mouse ioctl interface

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

drivers/input/mouse_upper.c

@@ -68,6 +68,8 @@ static int     mouse_open(FAR struct file *filep);
 static int     mouse_close(FAR struct file *filep);
 static ssize_t mouse_read(FAR struct file *filep, FAR char *buffer,
                           size_t buflen);
+static int     mouse_ioctl(FAR struct file *filep, int cmd,
+                           unsigned long arg);
 static int     mouse_poll(FAR struct file *filep, FAR struct pollfd *fds,
                           bool setup);
 
@@ -82,7 +84,7 @@ static const struct file_operations g_mouse_fops =
   mouse_read,     /* read */
   NULL,           /* write */
   NULL,           /* seek */
-  NULL,           /* ioctl */
+  mouse_ioctl,    /* ioctl */
   NULL,           /* mmap */
   NULL,           /* truncate */
   mouse_poll      /* poll */
@@ -217,6 +219,36 @@ out:
   return ret;
 }
 
+/****************************************************************************
+ * Name: mouse_ioctl
+ ****************************************************************************/
+
+static int mouse_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
+{
+  FAR struct inode             *inode = filep->f_inode;
+  FAR struct mouse_upperhalf_s *upper = inode->i_private;
+  FAR struct mouse_lowerhalf_s *lower = upper->lower;
+  int ret;
+
+  ret = nxmutex_lock(&upper->lock);
+  if (ret < 0)
+    {
+      return ret;
+    }
+
+  if (lower->control)
+    {
+      ret = lower->control(lower, cmd, arg);
+    }
+  else
+    {
+      ret = -ENOTTY;
+    }
+
+  nxmutex_unlock(&upper->lock);
+  return ret;
+}
+
 /****************************************************************************
  * Name: mouse_poll
  ****************************************************************************/

include/nuttx/fs/ioctl.h

@@ -108,6 +108,7 @@
 #define _PINCTRLBASE    (0x4000) /* Pinctrl driver ioctl commands */
 #define _PCIBASE        (0x4100) /* Pci ioctl commands */
 #define _I3CBASE        (0x4200) /* I3C driver ioctl commands */
+#define _MSEIOCBASE     (0x4300) /* Mouse ioctl commands */
 #define _WLIOCBASE      (0x8b00) /* Wireless modules ioctl network commands */
 
 /* boardctl() commands share the same number space */
@@ -370,6 +371,11 @@
 #define _TSIOCVALID(c)    (_IOC_TYPE(c)==_TSIOCBASE)
 #define _TSIOC(nr)        _IOC(_TSIOCBASE,nr)
 
+/* NuttX mouse ioctl definitions (see nuttx/input/mouse.h) ******************/
+
+#define _MSEIOCVALID(c)   (_IOC_TYPE(c)==_MSEIOCBASE)
+#define _MSEIOC(nr)       _IOC(_MSEIOCBASE,nr)
+
 /* NuttX sensor ioctl definitions (see nuttx/sensor/ioctl.h) ****************/
 
 #define _SNIOCVALID(c)    (_IOC_TYPE(c)==_SNIOCBASE)

include/nuttx/input/mouse.h

@@ -37,6 +37,7 @@
  ****************************************************************************/
 
 #include <nuttx/config.h>
+#include <nuttx/fs/ioctl.h>
 
 /****************************************************************************
  * Pre-processor Definitions
@@ -50,6 +51,13 @@
 #define MOUSE_BUTTON_2       (1 << 1) /* True: Right mouse button pressed */
 #define MOUSE_BUTTON_3       (1 << 2) /* True: Middle mouse button pressed */
 
+/* IOCTL Commands ***********************************************************/
+
+/* Common mouse IOCTL commands */
+
+#define MSE_FIRST            0x0001          /* First common command */
+#define MSE_NCMDS            1               /* One common commands */
+
 /****************************************************************************
  * Public Types
  ****************************************************************************/
@@ -75,6 +83,25 @@ struct mouse_report_s
 struct mouse_lowerhalf_s
 {
   FAR void *priv;  /* Save the upper half pointer */
+
+  /**************************************************************************
+   * Name: control
+   *
+   * Description:
+   *   Users can use this interface to implement custom IOCTL.
+   *
+   * Arguments:
+   *   lower   - The instance of lower half of mouse device.
+   *   cmd     - User defined specific command.
+   *   arg     - Argument of the specific command.
+   *
+   * Return Value:
+   *   Zero(OK) on success; a negated errno value on failure.
+   *   -ENOTTY - The command is not supported.
+   **************************************************************************/
+
+  CODE int (*control)(FAR struct mouse_lowerhalf_s *lower,
+                      int cmd, unsigned long arg);
 };
 
 /****************************************************************************