Add Xuelin iHIFI 770/770C/800 support

Taken from the xvortex fork (Roman Stolyarov)
Ported, rebased, and cleaned up by myself.

Change-Id: I7b2bca2d29502f2e4544e42f3d122786dd4b7978

1 files changed, 83 insertions, 0 deletions

diff --git a/firmware/export/wm8740.h b/firmware/export/wm8740.h
new file mode 100644
index 0000000000..ff27a7e41e
--- /dev/null
+++ b/firmware/export/wm8740.h
@@ -0,0 +1,83 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2016 by 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.
+ *
+ ****************************************************************************/
+
+#ifndef _WM8740_H
+#define _WM8740_H
+
+#define WM8740_VOLUME_MIN       -1270
+#define WM8740_VOLUME_MAX       0
+
+#define AUDIOHW_CAPS (FILTER_ROLL_OFF_CAP)
+AUDIOHW_SETTING(VOLUME, "dB", 0, 1, WM8740_VOLUME_MIN/10, WM8740_VOLUME_MAX/10, 0)
+AUDIOHW_SETTING(FILTER_ROLL_OFF, "", 0, 1, 0, 1, 0)
+
+#define WM8740_REG0             0x0000
+#define WM8740_REG1             0x0200
+#define WM8740_REG2             0x0400
+#define WM8740_REG3             0x0600
+#define WM8740_REG4             0x0C00
+
+/**
+ * Register #0
+ */
+#define WM8740_LDL              (1<<8)
+
+/**
+ * Register #1
+ */
+#define WM8740_LDR              (1<<8)
+
+/**
+ * Register #2
+ */
+#define WM8740_MUT              (1<<0)
+#define WM8740_DEM              (1<<1)
+#define WM8740_OPE              (1<<2)
+#define WM8740_IW0              (1<<3)
+#define WM8740_IW1              (1<<4)
+
+/**
+ * Register #3
+ */
+#define WM8740_I2S              (1<<0)
+#define WM8740_LRP              (1<<1)
+#define WM8740_ATC              (1<<2)
+#define WM8740_SR0              (1<<3)
+#define WM8740_REV              (1<<4)
+#define WM8740_SF0              (1<<6)
+#define WM8740_SF1              (1<<7)
+#define WM8740_IZD              (1<<8)
+
+/**
+ * Register #4
+ */
+#define WM8740_DIFF0            (1<<4)
+#define WM8740_DIFF1            (1<<5)
+#define WM8740_CDD              (1<<6)
+
+void audiohw_mute(void);
+void audiohw_unmute(void);
+
+void wm8740_set_ml(const int);
+void wm8740_set_mc(const int);
+void wm8740_set_md(const int);
+
+#endif