1 files changed, 62 insertions, 0 deletions

diff --git a/firmware/target/hosted/power-linux.c b/firmware/target/hosted/power-linux.c
new file mode 100644
index 0000000000..ea8d787ad5
--- /dev/null
+++ b/firmware/target/hosted/power-linux.c
@@ -0,0 +1,62 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2021 by Solomon Peachy
+ *
+ * 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 <sys/types.h>
+#include <fcntl.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include "system.h"
+#include "power.h"
+#include "panic.h"
+#include "sysfs.h"
+
+#include "tick.h"
+
+#define BATTERY_STATUS_PATH "/sys/class/power_supply/" BATTERY_DEV_NAME "/status"
+#define POWER_STATUS_PATH "/sys/class/power_supply/" POWER_DEV_NAME "/online"
+
+/* We get called multiple times per tick, let's cut that back! */
+static long last_tick = 0;
+static bool last_power = false;
+
+bool charging_state(void)
+{
+    if ((current_tick - last_tick) > HZ/2 ) {
+        char buf[12] = {0};
+        sysfs_get_string(BATTERY_STATUS_PATH, buf, sizeof(buf));
+
+        last_tick = current_tick;
+        last_power = (strncmp(buf, "Charging", 8) == 0);
+    }
+    return last_power;
+}
+
+unsigned int power_input_status(void)
+{
+    int present = 0;
+    sysfs_get_int(POWER_STATUS_PATH, &present);
+
+#ifdef FIIO_M3K_LINUX
+    usb_enable(present ? true : false);
+#endif
+
+    return present ? POWER_INPUT_USB_CHARGER : POWER_INPUT_NONE;
+}