1 files changed, 64 insertions, 0 deletions

diff --git a/firmware/export/es9018k2m.h b/firmware/export/es9018k2m.h
new file mode 100644
index 0000000000..035a607030
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+++ b/firmware/export/es9018k2m.h
@@ -0,0 +1,64 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ *
+ * Copyright (c) 2023 Dana Conrad
+ *
+ * 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 _ES9018K2M_H
+#define _ES9018K2M_H
+
+//======================================================================================
+// ES9018K2M support stuff
+
+#ifndef ES9018K2M_VOLUME_MIN
+# define ES9018K2M_VOLUME_MIN   -1270
+#endif
+
+#ifndef ES9018K2M_VOLUME_MAX
+# define ES9018K2M_VOLUME_MAX   0
+#endif
+
+#define ES9018K2M_REG0_SYSTEM_SETTINGS      0
+#define ES9018K2M_REG1_INPUT_CONFIG         1
+#define ES9018K2M_REG4_AUTOMUTE_TIME        4
+#define ES9018K2M_REG5_AUTOMUTE_LEVEL       5
+#define ES9018K2M_REG6_DEEMPHASIS           6
+#define ES9018K2M_REG7_GENERAL_SETTINGS     7
+#define ES9018K2M_REG8_GPIO_CONFIG          8
+#define ES9018K2M_REG10_MASTER_MODE_CTRL    10
+#define ES9018K2M_REG11_CHANNEL_MAPPING     11
+#define ES9018K2M_REG12_DPLL_SETTINGS       12
+#define ES9018K2M_REG13_THD_COMP            13
+#define ES9018K2M_REG14_SOFTSTART_SETTINGS  14
+#define ES9018K2M_REG15_VOLUME_L            15
+#define ES9018K2M_REG16_VOLUME_R            16
+#define ES9018K2M_REG21_GPIO_INPUT_SELECT   21
+
+/* writes volume levels to DAC over I2C */
+void es9018k2m_set_volume(int vol_l, int vol_r);
+
+/* writes a single register */
+/* returns I2C_STATUS_OK upon success, I2C_STATUS_* errors upon error */
+int es9018k2m_write_reg(uint8_t reg, uint8_t val);
+
+/* reads a single register */
+/* returns register value, or -1 upon error */
+int es9018k2m_read_reg(uint8_t reg);
+
+#endif
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