1 files changed, 308 insertions, 0 deletions

diff --git a/firmware/target/hosted/fiio/button-fiio.c b/firmware/target/hosted/fiio/button-fiio.c
new file mode 100644
index 0000000000..fcc7480e11
--- /dev/null
+++ b/firmware/target/hosted/fiio/button-fiio.c
@@ -0,0 +1,308 @@
+/***************************************************************************
+ *             __________               __   ___
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2017 Marcin Bukat
+ * Copyright (C) 2019 Roman Stolyarov
+ *
+ * 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 <poll.h>
+//#include <dir.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <linux/input.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "sysfs.h"
+#include "button.h"
+#include "button-target.h"
+#include "panic.h"
+
+#include "kernel.h"
+#include "backlight.h"
+#include "backlight-target.h"
+
+static int key_enter_delay = 0;
+static int key_right_delay = 0;
+static int key_left_delay = 0;
+static int key_power_delay = 0;
+static int key_home_delay = 0;
+static int key_backspace_delay = 0;
+static int key_leftbrace_delay = 0;
+static int key_rightbrace_delay = 0;
+static int key_up_delay = 0;
+static int key_down_delay = 0;
+static int key_f12_delay = 0;
+
+#define NR_POLL_DESC    2
+static struct pollfd poll_fds[NR_POLL_DESC];
+
+#define DEF_DELAY       5
+
+static int button_map_on(int keycode)
+{
+    switch(keycode)
+    {
+        case KEY_ENTER:
+            key_enter_delay = DEF_DELAY;
+            return BUTTON_PLAY;
+        case KEY_F10:
+            key_enter_delay = 0;
+            return BUTTON_PLAY;
+
+        case KEY_RIGHT:
+            key_right_delay = DEF_DELAY;
+            return BUTTON_VOL_DOWN;
+        case KEY_F7:
+            key_right_delay = 0;
+            return BUTTON_VOL_DOWN;
+
+        case KEY_LEFT:
+            key_left_delay = DEF_DELAY;
+            return BUTTON_VOL_UP;
+        case KEY_F6:
+            key_left_delay = 0;
+            return BUTTON_VOL_UP;
+
+        case KEY_POWER:
+            key_power_delay = DEF_DELAY;
+            return BUTTON_POWER;
+        case KEY_F8:
+            key_power_delay = 0;
+            return BUTTON_POWER;
+        
+        case KEY_HOME:
+            key_home_delay = DEF_DELAY;
+            return BUTTON_OPTION;
+        case KEY_F9:
+            key_home_delay = 0;
+            return BUTTON_OPTION;
+
+        case KEY_BACKSPACE:
+            key_backspace_delay = DEF_DELAY;
+            return BUTTON_HOME;
+        case KEY_NUMLOCK:
+            key_backspace_delay = 0;
+            return BUTTON_HOME;
+
+        case KEY_LEFTBRACE:
+            key_leftbrace_delay = DEF_DELAY;
+            return BUTTON_PREV;
+        case KEY_F5:
+            key_leftbrace_delay = 0;
+            return BUTTON_PREV;
+
+        case KEY_RIGHTBRACE:
+            key_rightbrace_delay = DEF_DELAY;
+            return BUTTON_NEXT;
+        case KEY_F4:
+            key_rightbrace_delay = 0;
+            return BUTTON_NEXT;
+
+        case KEY_UP:
+            if (!key_up_delay) key_up_delay = DEF_DELAY;
+            return BUTTON_UP;
+
+        case KEY_DOWN:
+            if (!key_down_delay) key_down_delay = DEF_DELAY;
+            return BUTTON_DOWN;
+
+        case KEY_F12:
+            key_f12_delay = DEF_DELAY;
+            //return BUTTON_UNLOCK;
+            return 0;
+
+        default:
+            return 0;
+    }
+}
+
+static int button_map_off(int keycode)
+{
+    switch(keycode)
+    {
+        case KEY_F10:
+            return BUTTON_PLAY;
+
+        case KEY_F7:
+            return BUTTON_VOL_DOWN;
+
+        case KEY_F6:
+            return BUTTON_VOL_UP;
+
+        case KEY_F8:
+            return BUTTON_POWER;
+        
+        case KEY_F9:
+            return BUTTON_OPTION;
+
+        case KEY_NUMLOCK:
+            return BUTTON_HOME;
+
+        case KEY_F5:
+            return BUTTON_PREV;
+
+        case KEY_F4:
+            return BUTTON_NEXT;
+
+        default:
+            return 0;
+    }
+}
+
+static int button_map_timer(void)
+{
+  int map = 0;
+  
+  if (key_enter_delay)
+  {
+    if (--key_enter_delay == 0) map |= BUTTON_PLAY;
+  }
+  if (key_right_delay)
+  {
+    if (--key_right_delay == 0) map |= BUTTON_VOL_DOWN;
+  }
+  if (key_left_delay)
+  {
+    if (--key_left_delay == 0) map |= BUTTON_VOL_UP;
+  }
+  if (key_power_delay)
+  {
+    if (--key_power_delay == 0) map |= BUTTON_POWER;
+  }
+  if (key_home_delay)
+  {
+    if (--key_home_delay == 0) map |= BUTTON_OPTION;
+  }
+  if (key_backspace_delay)
+  {
+    if (--key_backspace_delay == 0) map |= BUTTON_HOME;
+  }
+  if (key_leftbrace_delay)
+  {
+    if (--key_leftbrace_delay == 0) map |= BUTTON_PREV;
+  }
+  if (key_rightbrace_delay)
+  {
+    if (--key_rightbrace_delay == 0) map |= BUTTON_NEXT;
+  }
+  if (key_up_delay)
+  {
+    if (--key_up_delay == 0) map |= BUTTON_UP;
+  }
+  if (key_down_delay)
+  {
+    if (--key_down_delay == 0) map |= BUTTON_DOWN;
+  }
+  if (key_f12_delay)
+  {
+    if (--key_f12_delay == 0) map |= 0; //BUTTON_UNLOCK
+  }
+
+  return map;
+}
+
+void button_init_device(void)
+{
+    const char * const input_devs[] = {
+        "/dev/input/event0",
+        "/dev/input/event1",
+    };
+
+    for(int i = 0; i < NR_POLL_DESC; i++)
+    {
+        int fd = open(input_devs[i], O_RDWR);
+
+        if(fd < 0)
+        {
+            panicf("Cannot open input device: %s\n", input_devs[i]);
+        }
+
+        poll_fds[i].fd = fd;
+        poll_fds[i].events = POLLIN;
+        poll_fds[i].revents = 0;
+    }
+}
+
+int button_read_device(void)
+{
+    static int button_bitmap = 0;
+    static int map;
+    struct input_event event;
+
+    /* check if there are any events pending and process them */
+    while(poll(poll_fds, NR_POLL_DESC, 0))
+    {
+        for(int i = 0; i < NR_POLL_DESC; i++)
+        {
+            /* read only if non-blocking */
+            if(poll_fds[i].revents & POLLIN)
+            {
+                int size = read(poll_fds[i].fd, &event, sizeof(event));
+                if(size == (int)sizeof(event))
+                {
+                    if(event.type == EV_KEY)
+                    {
+                        int keycode = event.code;
+
+                        /* event.value == 1 means press
+                         * event.value == 0 means release
+                         */
+                        bool press = event.value ? true : false;
+
+                        if(press)
+                        {
+                            map = button_map_on(keycode);
+                            if(map) button_bitmap |= map;
+                        }
+                        else
+                        {
+                            map = button_map_off(keycode);
+                            if(map) button_bitmap &= ~map;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    map = button_map_timer();
+    if(map) button_bitmap &= ~map;
+
+    return button_bitmap;
+}
+
+bool headphones_inserted(void)
+{
+    int status = 0;
+    const char * const sysfs_hs_switch = "/sys/class/misc/axp173/headset_state";
+
+    sysfs_get_int(sysfs_hs_switch, &status);
+    if (status) return true;
+
+    return false;
+}
+
+void button_close_device(void)
+{
+    /* close descriptors */
+    for(int i = 0; i < NR_POLL_DESC; i++)
+    {
+        close(poll_fds[i].fd);
+    }
+}