Initial commit of the Samsung YP-R0 port.

This port is a hybrid native/RaaA port. It runs on a embedded linux system,
but is the only application. It therefore can implement lots of stuff that
native targets also implement, while leveraging the underlying linux kernel.

The port is quite advanced. User interface, audio playback, plugins work
mostly fine. Missing is e.g. power mangement and USB (see SamsungYPR0 wiki page).

Included in utils/ypr0tools are scripts and programs required to generate
a patched firmware. The patched firmware has the rootfs modified to load
Rockbox. It includes a early/safe USB mode.

This port needs a new toolchain, one that includes glibc headers and libraries.
rockboxdev.sh can generate it, but e.g. codesourcey and distro packages may
also work.

Most of the initial effort is done by Lorenzo Miori and others (on ABI),
including reverse engineering and patching of the original firmware,
initial drivers, and more. Big thanks to you.

Flyspray: FS#12348
Author: Lorenzo Miori, myself

Merry christmas to ypr0 owners! :)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31415 a1c6a512-1295-4272-9138-f99709370657

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");
+}