/************************************************************************************
 * configs/stm32f746g-disco/src/stm32_lcd.c
 *
 *   Copyright (C) 2018 Gregory Nutt. All rights reserved.
 *   Authors: Gregory Nutt <gnutt@nuttx.org>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name NuttX nor the names of its contributors may be
 *    used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 ************************************************************************************/

/************************************************************************************
 * Included Files
 ************************************************************************************/

#include <nuttx/config.h>

#include <errno.h>
#include <debug.h>

#include <nuttx/arch.h>
#include <nuttx/board.h>
#include <nuttx/video/fb.h>

#include <arch/board/board.h>

#include "up_arch.h"
#include "stm32f746g-disco.h"
#include "stm32_gpio.h"
#include "stm32_ltdc.h"

#ifdef CONFIG_STM32F7_LTDC
/****************************************************************************
 * Name: up_fbinitialize
 *
 * Description:
 *   Initialize the framebuffer video hardware associated with the display.
 *
 * Input Parameters:
 *   display - In the case of hardware with multiple displays, this
 *     specifies the display.  Normally this is zero.
 *
 * Returned Value:
 *   Zero is returned on success; a negated errno value is returned on any
 *   failure.
 *
 ****************************************************************************/

int up_fbinitialize(int display)
{
  /* Custom LCD display with RGB interface */

  stm32_configgpio(GPIO_LCD_DISP);
  stm32_configgpio(GPIO_LCD_BL);

  stm32_gpiowrite(GPIO_LCD_DISP, true);
  stm32_gpiowrite(GPIO_LCD_BL, true);

  return stm32_ltdcinitialize();
}

/****************************************************************************
 * Name: up_fbgetvplane
 *
 * Description:
 *   Return a a reference to the framebuffer object for the specified video
 *   plane of the specified plane.  Many OSDs support multiple planes of video.
 *
 * Input Parameters:
 *   display - In the case of hardware with multiple displays, this
 *     specifies the display.  Normally this is zero.
 *   vplane - Identifies the plane being queried.
 *
 * Returned Value:
 *   A non-NULL pointer to the frame buffer access structure is returned on
 *   success; NULL is returned on any failure.
 *
 ****************************************************************************/

FAR struct fb_vtable_s *up_fbgetvplane(int display, int vplane)
{
  return stm32_ltdcgetvplane(vplane);
}

/****************************************************************************
 * Name: up_fbuninitialize
 *
 * Description:
 *   Uninitialize the framebuffer support for the specified display.
 *
 * Input Parameters:
 *   display - In the case of hardware with multiple displays, this
 *     specifies the display.  Normally this is zero.
 *
 * Returned Value:
 *   None
 *
 ****************************************************************************/

void up_fbuninitialize(int display)
{
  stm32_gpiowrite(GPIO_LCD_DISP, false);
  stm32_gpiowrite(GPIO_LCD_BL, false);

  stm32_ltdcuninitialize();
}
#endif /* CONFIG_STM32_LTDC */