131 lines
4.5 KiB
C
131 lines
4.5 KiB
C
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/************************************************************************************
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* configs/stm32f746g-disco/src/stm32_lcd.c
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Authors: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#include <nuttx/config.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/arch.h>
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#include <nuttx/board.h>
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#include <nuttx/video/fb.h>
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#include <arch/board/board.h>
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#include "up_arch.h"
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#include "stm32f746g-disco.h"
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#include "stm32_gpio.h"
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#include "stm32_ltdc.h"
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#ifdef CONFIG_STM32F7_LTDC
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/****************************************************************************
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* Name: up_fbinitialize
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*
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* Description:
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* Initialize the framebuffer video hardware associated with the display.
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*
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* Input Parameters:
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* display - In the case of hardware with multiple displays, this
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* specifies the display. Normally this is zero.
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*
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* Returned Value:
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* Zero is returned on success; a negated errno value is returned on any
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* failure.
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*
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****************************************************************************/
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int up_fbinitialize(int display)
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{
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/* Custom LCD display with RGB interface */
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stm32_configgpio(GPIO_LCD_DISP);
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stm32_configgpio(GPIO_LCD_BL);
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stm32_gpiowrite(GPIO_LCD_DISP, true);
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stm32_gpiowrite(GPIO_LCD_BL, true);
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return stm32_ltdcinitialize();
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}
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/****************************************************************************
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* Name: up_fbgetvplane
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*
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* Description:
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* Return a a reference to the framebuffer object for the specified video
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* plane of the specified plane. Many OSDs support multiple planes of video.
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*
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* Input Parameters:
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* display - In the case of hardware with multiple displays, this
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* specifies the display. Normally this is zero.
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* vplane - Identifies the plane being queried.
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*
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* Returned Value:
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* A non-NULL pointer to the frame buffer access structure is returned on
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* success; NULL is returned on any failure.
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*
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****************************************************************************/
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FAR struct fb_vtable_s *up_fbgetvplane(int display, int vplane)
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{
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return stm32_ltdcgetvplane(vplane);
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}
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/****************************************************************************
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* Name: up_fbuninitialize
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*
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* Description:
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* Uninitialize the framebuffer support for the specified display.
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*
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* Input Parameters:
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* display - In the case of hardware with multiple displays, this
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* specifies the display. Normally this is zero.
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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void up_fbuninitialize(int display)
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{
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stm32_gpiowrite(GPIO_LCD_DISP, false);
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stm32_gpiowrite(GPIO_LCD_BL, false);
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stm32_ltdcuninitialize();
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}
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#endif /* CONFIG_STM32_LTDC */
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