iBasso DX50/DX90: Major code cleanup and reorganization.

Reorganization

- Separated iBasso devices from PLATFORM_ANDROID. These are now standlone
  hosted targets. Most device specific code is in the
  firmware/target/hosted/ibasso directory.
- No dependency on Android SDK, only the Android NDK is needed.
  32 bit Android NDK and Android API Level 16.
- Separate implementation for each device where feasible.

Code cleanup

- Rewrite of existing code, from simple reformat to complete reimplementation.
- New backlight interface, seperating backlight from touchscreen.
- Rewrite of device button handler, removing unneeded code and fixing memory
  leaks.
- New Debug messages interface logging to Android adb logcat (DEBUGF, panicf,
  logf).
- Rewrite of lcd device handler, removing unneeded code and fixing memory leaks.
- Rewrite of audiohw device handler/pcm interface, removing unneeded code and
  fixing memory leaks, enabling 44.1/48kHz pthreaded playback.
- Rewrite of power and powermng, proper shutdown, using batterylog results
  (see http://gerrit.rockbox.org/r/#/c/1047/).
- Rewrite of configure (Android NDK) and device specific config.
- Rewrite of the Android NDK specific Makefile.

Misc

- All plugins/games/demos activated.
- Update tinyalsa to latest from https://github.com/tinyalsa/tinyalsa.

Includes

- http://gerrit.rockbox.org/r/#/c/993/
- http://gerrit.rockbox.org/r/#/c/1010/
- http://gerrit.rockbox.org/r/#/c/1035/

Does not include http://gerrit.rockbox.org/r/#/c/1007/ due to new backlight
interface and new option for hold switch, touchscreen, physical button
interaction.

Rockbox needs the iBasso DX50/DX90 loader for startup, see
http://gerrit.rockbox.org/r/#/c/1099/

The loader expects Rockbox to be installed in /mnt/sdcard/.rockbox/. If
/mnt/sdcard/ is accessed as USB mass storage device, Rockbox will exit
gracefully and the loader will restart Rockbox on USB disconnect.

Tested on iBasso DX50.
Compiled (not tested) for iBasso DX90.
Compiled (not tested) for PLATFORM_ANDROID.

Change-Id: I5f5e22e68f5b4cf29c28e2b40b2c265f2beb7ab7

1 files changed, 0 insertions, 316 deletions

diff --git a/firmware/target/hosted/android/dx50/button-dx50.c b/firmware/target/hosted/android/dx50/button-dx50.c
deleted file mode 100644
index 250b448491..0000000000
--- a/firmware/target/hosted/android/dx50/button-dx50.c
+++ /dev/null
@@ -1,316 +0,0 @@
-/***************************************************************************
- *             __________               __   ___.
- *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
- *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
- *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
- *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
- *                     \/            \/     \/    \/            \/
- * $Id$
- *
- * Copyright (c) 2010 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 <stdbool.h>
-#include "button.h"
-#include "buttonmap.h"
-#include "config.h"
-#include "kernel.h"
-#include "system.h"
-#include "touchscreen.h"
-#include "powermgmt.h"
-#include "backlight.h"
-
-#include <linux/input.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdint.h>
-#include <dirent.h>
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <sys/inotify.h>
-#include <sys/limits.h>
-#include <sys/poll.h>
-#include <errno.h>
-
-
-static struct pollfd *ufds;
-static char **device_names;
-static int nfds;
-
-enum {
-    PRINT_DEVICE_ERRORS     = 1U << 0,
-    PRINT_DEVICE            = 1U << 1,
-    PRINT_DEVICE_NAME       = 1U << 2,
-    PRINT_DEVICE_INFO       = 1U << 3,
-    PRINT_VERSION           = 1U << 4,
-    PRINT_POSSIBLE_EVENTS   = 1U << 5,
-    PRINT_INPUT_PROPS       = 1U << 6,
-    PRINT_HID_DESCRIPTOR    = 1U << 7,
-
-    PRINT_ALL_INFO          = (1U << 8) - 1,
-
-    PRINT_LABELS            = 1U << 16,
-};
-
-static int last_y, last_x;
-static int last_btns;
-
-static enum {
-    STATE_UNKNOWN,
-    STATE_UP,
-    STATE_DOWN
-} last_touch_state = STATE_UNKNOWN;
-
-
-static int open_device(const char *device, int print_flags)
-{
-    int fd;
-    struct pollfd *new_ufds;
-    char **new_device_names;
-
-    fd = open(device, O_RDWR);
-    if(fd < 0) {
-        if(print_flags & PRINT_DEVICE_ERRORS)
-            fprintf(stderr, "could not open %s, %s\n", device, strerror(errno));
-        return -1;
-    }
-
-    new_ufds = realloc(ufds, sizeof(ufds[0]) * (nfds + 1));
-    if(new_ufds == NULL) {
-        fprintf(stderr, "out of memory\n");
-        close(fd);
-        return -1;
-    }
-    ufds = new_ufds;
-    new_device_names = realloc(device_names, sizeof(device_names[0]) * (nfds + 1));
-    if(new_device_names == NULL) {
-        fprintf(stderr, "out of memory\n");
-        close(fd);
-        return -1;
-    }
-    device_names = new_device_names;
-
-    ufds[nfds].fd = fd;
-    ufds[nfds].events = POLLIN;
-    device_names[nfds] = strdup(device);
-    nfds++;
-
-    return 0;
-}
-
-
-
-static int scan_dir(const char *dirname, int print_flags)
-{
-    char devname[PATH_MAX];
-    char *filename;
-    DIR *dir;
-    struct dirent *de;
-    dir = opendir(dirname);
-    if(dir == NULL)
-        return -1;
-    strcpy(devname, dirname);
-    filename = devname + strlen(devname);
-    *filename++ = '/';
-    while((de = readdir(dir))) {
-        if(de->d_name[0] == '.' &&
-           (de->d_name[1] == '\0' ||
-            (de->d_name[1] == '.' && de->d_name[2] == '\0')))
-            continue;
-        strcpy(filename, de->d_name);
-        open_device(devname, print_flags);
-    }
-    closedir(dir);
-    return 0;
-}
-
-bool _hold;
-
-bool button_hold()
-{
-    FILE *f = fopen("/sys/class/axppower/holdkey", "r");
-    char x;
-    fscanf(f, "%c", &x);
-    fclose(f);
-    _hold = !(x&STATE_UNLOCKED);
-    return _hold;
-}
-
-
-void button_init_device(void)
-{
-    int res;
-    int print_flags = 0;
-    const char *device = NULL;
-    const char *device_path = "/dev/input";
-
-    nfds = 1;
-    ufds = calloc(1, sizeof(ufds[0]));
-    ufds[0].fd = inotify_init();
-    ufds[0].events = POLLIN;
-    if(device) {
-        res = open_device(device, print_flags);
-        if(res < 0) {
-            // return 1;
-        }
-    } else {
-        res = inotify_add_watch(ufds[0].fd, device_path, IN_DELETE | IN_CREATE);
-        if(res < 0) {
-            fprintf(stderr, "could not add watch for %s, %s\n", device_path, strerror(errno));
-            // return 1;
-        }
-        res = scan_dir(device_path, print_flags);
-        if(res < 0) {
-            fprintf(stderr, "scan dir failed for %s\n", device_path);
-            // return 1;
-        }
-    }
-
-    button_hold();    //store state
-
-    set_rockbox_ready();
-}
-
-void touchscreen_enable_device(bool en)
-{
-    (void)en; /* FIXME: do something smart */
-}
-
-
-int keycode_to_button(int keyboard_key)
-{
-    switch(keyboard_key){
-        case KEYCODE_PWR:
-            return BUTTON_POWER;
-
-        case KEYCODE_PWR_LONG:
-            return BUTTON_POWER_LONG;
-
-        case KEYCODE_VOLPLUS:
-            return BUTTON_VOL_UP;
-
-        case KEYCODE_VOLMINUS:
-            return BUTTON_VOL_DOWN;
-
-        case KEYCODE_PREV:
-            return BUTTON_LEFT;
-
-        case KEYCODE_NEXT:
-            return BUTTON_RIGHT;
-
-        case KEYCODE_PLAY:
-            return BUTTON_PLAY;
-
-        case KEYCODE_HOLD:
-            button_hold();    /* store state */
-            backlight_hold_changed(_hold);
-            return BUTTON_NONE;
-
-        default:
-            return BUTTON_NONE;
-    }
-}
-
-
-int button_read_device(int *data)
-{
-    int i;
-    int res;
-    struct input_event event;
-    int read_more;
-    unsigned button = 0;
-
-    if(last_btns & BUTTON_POWER_LONG)
-    {
-        return last_btns;   /* simulate repeat */
-    }
-
-    do {
-        read_more = 0;
-        poll(ufds, nfds, 10);
-        for(i = 1; i < nfds; i++) {
-            if(ufds[i].revents & POLLIN) {
-                res = read(ufds[i].fd, &event, sizeof(event));
-                if(res < (int)sizeof(event)) {
-                    fprintf(stderr, "could not get event\n");
-                }
-
-                switch(event.type)
-                {
-                    case 1: /* HW-Button */
-                        button = keycode_to_button(event.code);
-                        if (_hold) /* we have to wait for keycode_to_button() first to maybe clear hold state */
-                            break;
-                        if (button == BUTTON_NONE)
-                        {
-                            last_btns = button;
-                            break;
-                        }
-/* workaround for a wrong feedback, only present with DX90 */
-#if defined(DX90)
-                       if (button == BUTTON_RIGHT && (last_btns & BUTTON_LEFT == BUTTON_LEFT) && !event.value)
-                        {
-                            button = BUTTON_LEFT;
-                        }
-#endif
-                        if (event.value)
-                            last_btns |= button;
-                        else
-                            last_btns &= (~button);
-
-                        break;
-
-                    case 3:  /* Touchscreen */
-                        if(_hold)
-                            break;
-
-                        switch(event.code)
-                        {
-                            case 53: /* x -> next will be y */
-                                last_x = event.value;
-                                read_more = 1;
-                            break;
-                            case 54: /* y */
-                                last_y = event.value;
-                            break;
-                            case 57: /* press -> next will be x */
-                                if(event.value==1)
-                                {
-                                    last_touch_state = STATE_DOWN;
-                                    read_more = 1;
-                                }
-                                else
-                                    last_touch_state = STATE_UP;
-                            break;
-                        }
-                    break;
-                }
-            }
-        }
-    } while(read_more);
-
-
-    /* Get grid button/coordinates based on the current touchscreen mode
-     *
-     * Caveat: the caller seemingly depends on *data always being filled with
-     *         the last known touchscreen position, so always call
-     *         touchscreen_to_pixels() */
-    int touch = touchscreen_to_pixels(last_x, last_y, data);
-
-    if (last_touch_state == STATE_DOWN)
-        return last_btns | touch;
-
-    return last_btns;
-}
-