1 files changed, 195 insertions, 0 deletions

diff --git a/firmware/target/hosted/ibasso/lcd-ibasso.c b/firmware/target/hosted/ibasso/lcd-ibasso.c
new file mode 100644
index 0000000000..4e03ba7e50
--- /dev/null
+++ b/firmware/target/hosted/ibasso/lcd-ibasso.c
@@ -0,0 +1,195 @@
+/***************************************************************************
+ *             __________               __   ___
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50
+ * Copyright (C) 2014 by Mario Basister: iBasso DX90 port
+ * Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features
+ * Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features
+ *
+ * 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 <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <linux/fb.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "config.h"
+#include "debug.h"
+#include "events.h"
+#include "panic.h"
+
+#include "debug-ibasso.h"
+#include "lcd-target.h"
+#include "sysfs-ibasso.h"
+
+
+fb_data *dev_fb = 0;
+
+
+/* Framebuffer device handle. */
+static int dev_fd = 0;
+
+
+void lcd_init_device(void)
+{
+    TRACE;
+
+    dev_fd = open("/dev/graphics/fb0", O_RDWR);
+    if(dev_fd == -1)
+    {
+        DEBUGF("ERROR %s: open failed on /dev/graphics/fb0, errno: %d.", __func__, errno);
+        exit(errno);
+    }
+
+    /* Get the changeable information. */
+    struct fb_var_screeninfo vinfo;
+    if(ioctl(dev_fd, FBIOGET_VSCREENINFO, &vinfo) < 0)
+    {
+        DEBUGF("ERROR %s: ioctl FBIOGET_VSCREENINFO failed on /dev/graphics/fb0, errno: %d.", __func__, errno);
+        exit(errno);
+    }
+
+    DEBUGF("DEBUG %s: bits_per_pixel: %u, width: %u, height: %u.", __func__, vinfo.bits_per_pixel, vinfo.width, vinfo.height);
+
+    /*
+        Framebuffer does not fit the screen, a bug of iBassos Firmware, not Rockbox.
+        Cannot be solved with parameters.
+    */
+    /*vinfo.bits_per_pixel = LCD_DEPTH;
+    vinfo.xres           = LCD_WIDTH;
+    vinfo.xres_virtual   = LCD_WIDTH;
+    vinfo.width          = LCD_WIDTH;
+    vinfo.yres           = LCD_HEIGHT;
+    vinfo.yres_virtual   = LCD_HEIGHT;
+    vinfo.height         = LCD_HEIGHT;
+    vinfo.activate       = FB_ACTIVATE_NOW;
+    if(ioctl(dev_fd, FBIOPUT_VSCREENINFO, &vinfo) == -1)
+    {
+        DEBUGF("ERROR %s: ioctl FBIOPUT_VSCREENINFO failed on /dev/graphics/fb0, errno: %d.", __func__, errno);
+        exit(EXIT_FAILURE);
+    }*/
+
+
+    /* Sanity check: Does framebuffer config match Rockbox config? */
+    size_t screensize = vinfo.xres * vinfo.yres * vinfo.bits_per_pixel / 8;
+    if(screensize != FRAMEBUFFER_SIZE)
+    {
+        DEBUGF("ERROR %s: Screen size does not match config: %d != %d.", __func__, screensize, FRAMEBUFFER_SIZE);
+        exit(EXIT_FAILURE);
+    }
+
+    /* Map the device to memory. */
+    dev_fb = mmap(0, FRAMEBUFFER_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, dev_fd, 0);
+    if(dev_fb == MAP_FAILED)
+    {
+        DEBUGF("ERROR %s: mmap failed on /dev/graphics/fb0, errno: %d.", __func__, errno);
+        exit(errno);
+    }
+
+    /* Activate Rockbox LCD. */
+    lcd_enable(true);
+}
+
+
+void lcd_shutdown(void)
+{
+    TRACE;
+
+    lcd_set_active(false);
+    munmap(dev_fb, FRAMEBUFFER_SIZE);
+    close(dev_fd) ;
+}
+
+
+/*
+    Left as reference. Unblanking does not work as expected, will not enable LCD after a few
+    seconds of power down.
+    Instead the backlight power is toggled.
+*/
+/*void lcd_power_on(void)
+{
+    TRACE;
+
+    if(ioctl(dev_fd, FBIOBLANK, VESA_NO_BLANKING) == -1)
+    {
+        DEBUGF("ERROR %s: ioctl FBIOBLANK failed on /dev/graphics/fb0, errno: %d.", __func__, errno);
+        panicf("ERROR %s: ioctl FBIOBLANK failed on /dev/graphics/fb0, errno: %d.", __func__, errno);
+        return;
+    }
+
+    lcd_set_active(true);
+    send_event(LCD_EVENT_ACTIVATION, NULL);
+}
+
+
+void lcd_power_off(void)
+{
+    TRACE;
+
+    lcd_set_active(false);
+
+    if(ioctl(dev_fd, FBIOBLANK, VESA_POWERDOWN) == -1)
+    {
+        DEBUGF("ERROR %s: ioctl FBIOBLANK failed on /dev/graphics/fb0, errno: %d.", __func__, errno);
+        panicf("ERROR %s: ioctl FBIOBLANK failed on /dev/graphics/fb0, errno: %d.", __func__, errno);
+        return;
+    }
+}*/
+
+
+void lcd_enable(bool on)
+{
+    TRACE;
+
+    lcd_set_active(on);
+
+    if(on)
+    {
+        /*
+            /sys/power/state
+            on: Cancel suspend.
+        */
+        if(! sysfs_set_string(SYSFS_POWER_STATE, "on"))
+        {
+            DEBUGF("ERROR %s: Can not set power state.", __func__);
+        }
+
+        send_event(LCD_EVENT_ACTIVATION, NULL);
+    }
+}
+
+
+void lcd_sleep(void)
+{
+    TRACE;
+
+    /*
+        See system_init(). Without suspend blocker und mute prevention this will interrupt playback.
+        Essentially, we are turning off the touch screen.
+        /sys/power/state
+        mem: Suspend to RAM.
+    */
+    if(! sysfs_set_string(SYSFS_POWER_STATE, "mem"))
+    {
+        DEBUGF("ERROR %s: Can not set power state.", __func__);
+    }
+}