1 files changed, 147 insertions, 0 deletions

diff --git a/firmware/target/hosted/ypr0/lcd-ypr0.c b/firmware/target/hosted/ypr0/lcd-ypr0.c
new file mode 100644
index 0000000000..f0565ae2d4
--- /dev/null
+++ b/firmware/target/hosted/ypr0/lcd-ypr0.c
@@ -0,0 +1,147 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: lcd-bitmap.c 29248 2011-02-08 20:05:25Z thomasjfox $
+ *
+ * Copyright (C) 2011 Lorenzo Miori, Thomas Martitz
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include <stdlib.h>
+#include <unistd.h>
+#include <stdio.h>
+#include "string.h"
+#include <linux/fb.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+
+#include "file.h"
+#include "debug.h"
+#include "system.h"
+#include "screendump.h"
+#include "lcd.h"
+
+/* eqivalent to fb + y*width + x */
+#define LCDADDR(x, y) (&lcd_framebuffer[(y)][(x)])
+
+static int dev_fd = 0;
+static fb_data *dev_fb = 0;
+
+void lcd_update(void)
+{
+    /* update the entire display */
+    memcpy(dev_fb, lcd_framebuffer, sizeof(lcd_framebuffer));
+}
+
+/* Copy Rockbox frame buffer to the mmapped lcd device */
+void lcd_update_rect(int x, int y, int width, int height)
+{
+    /* nothing to draw? */
+    if ((width <= 0) || (height <= 0) || (x >= LCD_WIDTH) ||
+            (y >= LCD_HEIGHT) || (x + width <= 0) || (y + height <= 0))
+        return;
+
+    /* do the necessary clipping */
+    if (x < 0)
+    {   /* clip left */
+        width += x;
+        x = 0;
+    }
+    if (y < 0)
+    {   /* clip top */
+        height += y;
+        y = 0;
+    }
+    if (x + width > LCD_WIDTH)
+        width = LCD_WIDTH - x; /* clip right */
+    if (y + height > LCD_HEIGHT)
+        height = LCD_HEIGHT - y; /* clip bottom */
+
+    fb_data* src  = LCDADDR(x, y);
+    fb_data* dst = dev_fb + y*LCD_WIDTH + x;
+
+    if (LCD_WIDTH == width)
+    {   /* optimized full-width update */
+        memcpy(dst, src, width * height * sizeof(fb_data));
+    }
+    else
+    {   /* row by row */
+        do
+        {
+            memcpy(dst, src, width * sizeof(fb_data));
+            src += LCD_WIDTH;
+            dst += LCD_WIDTH;
+        } while(--height > 0);
+    }
+}
+
+void lcd_shutdown(void)
+{
+    printf("FB closed.");
+    munmap(dev_fb, sizeof(lcd_framebuffer));
+    close(dev_fd);
+}
+
+void lcd_init_device(void)
+{
+    size_t screensize;
+    struct fb_var_screeninfo vinfo;
+    struct fb_fix_screeninfo finfo;
+
+    /* Open the framebuffer device */
+    dev_fd = open("/dev/fb0", O_RDWR);
+    if (dev_fd == -1) {
+        perror("Error: cannot open framebuffer device");
+        exit(1);
+    }
+    printf("The framebuffer device was opened successfully.\n");
+
+    /* Get the fixed properties */
+    if (ioctl(dev_fd, FBIOGET_FSCREENINFO, &finfo) == -1) {
+        perror("Error reading fixed information");
+        exit(2);
+    }
+
+    /* Now we get the settable settings, and we set 16 bit bpp */
+    if (ioctl(dev_fd, FBIOGET_VSCREENINFO, &vinfo) == -1) {
+        perror("Error reading variable information");
+        exit(3);
+    }
+
+    vinfo.bits_per_pixel = 16;
+
+    if (ioctl(dev_fd, FBIOPUT_VSCREENINFO, &vinfo)) {
+            perror("fbset(ioctl)");
+            exit(4);
+    }
+
+    printf("%dx%d, %dbpp\n", vinfo.xres, vinfo.yres, vinfo.bits_per_pixel);
+
+    /* Figure out the size of the screen in bytes */
+    screensize = vinfo.xres * vinfo.yres * vinfo.bits_per_pixel / 8;
+    if (screensize != sizeof(lcd_framebuffer))
+    {
+        exit(4);
+        perror("Display and framebuffer mismatch!\n");
+    }
+
+    /* Map the device to memory */
+    dev_fb = mmap(0, screensize, PROT_READ | PROT_WRITE, MAP_SHARED, dev_fd, 0);
+    if ((int)dev_fb == -1) {
+        perror("Error: failed to map framebuffer device to memory");
+        exit(4);
+    }
+    printf("The framebuffer device was mapped to memory successfully.\n");
+}