apps/examples/ltdc: Add testing support for the STM32 LTDC's 2D DMA. From Marco Krahl.

examples/ltdc/Makefile

@@ -45,6 +45,9 @@ STACKSIZE = 2048
 
 ASRCS =
 CSRCS =
+ifeq ($(CONFIG_STM32_DMA2D),y)
+CSRCS += dma2d.c
+endif
 MAINSRC = ltdc_main.c
 
 AOBJS = $(ASRCS:.S=$(OBJEXT))

examples/ltdc/ltdc.h

@@ -0,0 +1,141 @@
+/****************************************************************************
+ * examples/ltdc/ltdc.h
+ *
+ *   Copyright (C) 2015 Marco Krahl. All rights reserved.
+ *   Author: Marco Krahl <ocram.lhark@gmail.com>
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef _EXAMPLES_LTDC_LTDC_H
+#define _EXAMPLES_LTDC_LTDC_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <debug.h>
+
+#include <nuttx/video/rgbcolors.h>
+#include <nuttx/video/fb.h>
+
+#include <arch/chip/ltdc.h>
+#ifdef CONFIG_STM32_DMA2D
+# include <arch/chip/dma2d.h>
+#endif
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+#define LTDC_EXAMPLE_NCOLORS    5
+
+#ifdef CONFIG_STM32_LTDC_INTERFACE
+struct surface
+{
+  struct fb_videoinfo_s vinfo;
+  struct fb_planeinfo_s pinfo;
+  FAR struct ltdc_layer_s *layer;
+#ifdef CONFIG_STM32_DMA2D
+  FAR struct dma2d_layer_s *dma2d;
+#endif
+};
+
+# ifdef CONFIG_STM32_DMA2D
+struct dma2d_surface
+{
+  struct fb_videoinfo_s vinfo;
+  struct fb_planeinfo_s pinfo;
+  FAR struct dma2d_layer_s *dma2d;
+};
+# endif
+#endif
+
+enum example_colors
+{
+  LTDC_BLACK,
+  LTDC_RED,
+  LTDC_GREEN,
+  LTDC_BLUE,
+  LTDC_WHITE
+};
+
+static const uint32_t g_rgb24[LTDC_EXAMPLE_NCOLORS] =
+{
+  RGB24_BLACK,
+  RGB24_RED,
+  RGB24_GREEN,
+  RGB24_BLUE,
+  RGB24_WHITE,
+};
+
+static const uint32_t g_rgb16[LTDC_EXAMPLE_NCOLORS] =
+{
+  RGB16_BLACK,
+  RGB16_RED,
+  RGB16_GREEN,
+  RGB16_BLUE,
+  RGB16_WHITE,
+};
+
+/****************************************************************************
+ * Public Functions
+****************************************************************************/
+
+void ltdc_clrcolor(uint8_t *color, uint8_t value, size_t size);
+int ltdc_cmpcolor(uint8_t *color1, uint8_t *color2, size_t size);
+
+#ifdef CONFIG_FB_CMAP
+void ltdc_init_cmap(void);
+FAR struct fb_cmap_s * ltdc_createcmap(uint16_t ncolors);
+void ltdc_deletecmap(FAR struct fb_cmap_s *cmap);
+#endif
+uint32_t ltdc_color(FAR struct fb_videoinfo_s *vinfo, uint8_t color);
+void ltdc_simple_draw(FAR struct fb_videoinfo_s *vinfo,
+                        FAR struct fb_planeinfo_s *pinfo);
+
+#ifdef CONFIG_STM32_LTDC_L2
+void ltdc_drawcolor(FAR struct fb_videoinfo_s *vinfo, void *buffer,
+                           uint16_t xres, uint16_t yres, uint32_t color);
+#endif
+
+#ifdef CONFIG_STM32_LTDC_INTERFACE
+struct surface * ltdc_get_surface(uint32_t mode);
+#endif
+
+#ifdef CONFIG_STM32_DMA2D
+void ltdc_dma2d_main(void);
+#endif
+#endif /* _EXAMPLES_LTDC_LTDC_H */