1 files changed, 122 insertions, 0 deletions

diff --git a/firmware/drivers/audio/xduoolinux_codec.c b/firmware/drivers/audio/xduoolinux_codec.c
new file mode 100644
index 0000000000..5db4902e5f
--- /dev/null
+++ b/firmware/drivers/audio/xduoolinux_codec.c
@@ -0,0 +1,122 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ *
+ * Copyright (c) 2018 Marcin Bukat
+ * Copyright (c) 2018 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 "config.h"
+#include "audio.h"
+#include "audiohw.h"
+#include "system.h"
+#include "kernel.h"
+#include "panic.h"
+#include "sysfs.h"
+#include "alsa-controls.h"
+
+static int fd_hw;
+
+static void hw_open(void)
+{
+    fd_hw = open("/dev/snd/controlC0", O_RDWR);
+    if(fd_hw < 0)
+        panicf("Cannot open '/dev/snd/controlC0'");
+}
+
+static void hw_close(void)
+{
+    close(fd_hw);
+}
+
+void audiohw_preinit(void)
+{
+    alsa_controls_init();
+    hw_open();
+}
+
+void audiohw_postinit(void)
+{
+    long int ps = 2; // headset
+    int status = 0;
+
+    const char * const sysfs_lo_switch = "/sys/class/switch/lineout/state";
+    const char * const sysfs_hs_switch = "/sys/class/switch/headset/state";
+#ifdef XDUOO_X20
+    const char * const sysfs_bal_switch = "/sys/class/switch/balance/state";
+#endif
+
+#if defined(XDUOO_X3II)
+    alsa_controls_set_bool("AK4490 Soft Mute", true);
+#endif
+
+    sysfs_get_int(sysfs_lo_switch, &status);
+    if (status) ps = 1; // lineout
+
+    sysfs_get_int(sysfs_hs_switch, &status);
+    if (status) ps = 2; // headset
+
+#ifdef XDUOO_X20
+    sysfs_get_int(sysfs_bal_switch, &status);
+    if (status) ps = 3; // balance
+#endif
+
+    /* Output port switch */
+    alsa_controls_set_ints("Output Port Switch", 1, &ps);
+
+#if defined(XDUOO_X3II)
+    alsa_controls_set_bool("AK4490 Soft Mute", false);
+#endif
+}
+
+void audiohw_close(void)
+{
+    hw_close();
+    alsa_controls_close();
+}
+
+void audiohw_set_frequency(int fsel)
+{
+    (void)fsel;
+}
+
+void audiohw_set_volume(int vol_l, int vol_r)
+{
+    long int vol_l_hw = -vol_l/5;
+    long int vol_r_hw = -vol_r/5;
+
+    alsa_controls_set_ints("Left Playback Volume", 1, &vol_l_hw);
+    alsa_controls_set_ints("Right Playback Volume", 1, &vol_r_hw);
+}
+
+void audiohw_set_filter_roll_off(int value)
+{
+    /* 0 = fast (sharp);
+       1 = slow;
+       2 = fast2
+       3 = slow2
+       4 = NOS ? */
+    long int value_hw = value;
+#if defined(XDUOO_X3II)
+    alsa_controls_set_ints("AK4490 Digital Filter", 1, &value_hw);
+#elif defined(XDUOO_X20)
+    alsa_controls_set_ints("ES9018_K2M Digital Filter", 1, &value_hw);
+#else
+    (void)value;
+#endif
+}