source: rtems/cpukit/libcsupport/include/rtems/framebuffer.h @ 183af89

/**
 * @file rtems/framebuffer.h
 *
 * This file describes the Frame Buffer Device Driver for all boards.
 */

/*
 *  COPYRIGHT (c) 1989-2011.
 *  On-Line Applications Research Corporation (OAR).
 *
 *  The license and distribution terms for this file may be
 *  found in the file LICENSE in this distribution or at
 *  http://www.rtems.com/license/LICENSE.
 *
 *  $Id$
 */

#ifndef __RTEMS_FRAMEBUFFER_h__
#define __RTEMS_FRAMEBUFFER_h__

#ifdef __cplusplus
extern "C" {
#endif

/**
 *  This macro defines the standard name for the frame buffer device
 *  that is available to applications.
 */
#define FRAMEBUFFER_DEVICE_NAME "/dev/fb"

/**
 *  This macro defines the standard device driver table entry for
 *  a frame buffer device driver.
 */
#define FRAME_BUFFER_DRIVER_TABLE_ENTRY \
  { frame_buffer_initialize, frame_buffer_open, frame_buffer_close, \
    frame_buffer_read, frame_buffer_write, frame_buffer_control }

/**
 *  @brief Frame Buffer Initialization Entry Point
 *
 *  This method initializes the frame buffer device driver.
 *
 *  @param[in] major is the device driver major number
 *  @param[in] minor is the device driver minor number
 *  @param[in] arg is the parameters to this call
 *
 *  @return This method returns RTEMS_SUCCESSFUL when
 *          the device driver is successfully initialized.
 */
rtems_device_driver frame_buffer_initialize(
  rtems_device_major_number  major,
  rtems_device_minor_number  minor,
  void                      *arg
);

/**
 *  @brief Frame Buffer Open Entry Point
 *
 *  This method opens a specific device supported by the
 *  frame buffer device driver.
 *
 *  @param[in] major is the device driver major number
 *  @param[in] minor is the device driver minor number
 *  @param[in] arg is the parameters to this call
 *
 *  @return This method returns RTEMS_SUCCESSFUL when
 *          the device driver is successfully opened.
 */
rtems_device_driver frame_buffer_open(
  rtems_device_major_number  major,
  rtems_device_minor_number  minor,
  void                      *arg
);

/**
 *  @brief Frame Buffer Close Entry Point
 *
 *  This method closes a specific device supported by the
 *  frame buffer device driver.
 *
 *  @param[in] major is the device driver major number
 *  @param[in] minor is the device driver minor number
 *  @param[in] arg is the parameters to this call
 *
 *  @return This method returns RTEMS_SUCCESSFUL when
 *          the device is successfully closed.
 */
rtems_device_driver frame_buffer_close(
  rtems_device_major_number  major,
  rtems_device_minor_number  minor,
  void                      *arg
);

/**
 *  @brief Frame Buffer Read Entry Point
 *
 *  This method reads from a specific device supported by the
 *  frame buffer device driver.
 *
 *  @param[in] major is the device driver major number
 *  @param[in] minor is the device driver minor number
 *  @param[in] arg is the parameters to this call
 *
 *  @return This method returns RTEMS_SUCCESSFUL when
 *          the device is successfully read from.
 */
rtems_device_driver frame_buffer_read(
  rtems_device_major_number  major,
  rtems_device_minor_number  minor,
  void                      *arg
);

/**
 *  @brief Frame Buffer Write Entry Point
 *
 *  This method writes to a specific device supported by the
 *  frame buffer device driver.
 *
 *  @param[in] major is the device driver major number
 *  @param[in] minor is the device driver minor number
 *  @param[in] arg is the parameters to this call
 *
 *  @return This method returns RTEMS_SUCCESSFUL when
 *          the device is successfully written.
 */
rtems_device_driver frame_buffer_write(
  rtems_device_major_number  major,
  rtems_device_minor_number  minor,
  void                      *arg
);

/**
 *  @brief Frame Buffer IO Control Entry Point
 *
 *  This method performs an IO Control operation on a
 *  specific device supported by the frame buffer device driver.
 *
 *  @param[in] major is the device driver major number
 *  @param[in] minor is the device driver minor number
 *  @param[in] arg is the parameters to this call
 *
 *  @return This method returns RTEMS_SUCCESSFUL when
 *          the device driver IO control operation is
 *          successfully performed.
 */
rtems_device_driver frame_buffer_control(
  rtems_device_major_number  major,
  rtems_device_minor_number  minor,
  void                      *arg
);

#ifdef __cplusplus
}
#endif

#endif
/* end of include file */