ErosQ New Revision HW volume

Add HW volume control via ES9018K2M, and reorganize
eros_qn_codec.c/.h, audiohw-erosqnative.c.

This automatically detects the presence of the new DAC and
uses its hardware volume scaling. If not present, use same
SWVOL we have been using so far.

Add debug menu readout of SWVOL/I2C result.

Break out es9018k2m stuff into its own file so that
maybe it can be useful to other ports.

Note that we may need to get smarter about detecting the DAC
type if/when another model emerges.

Change-Id: I586a1cf7f150dd6b4e221157859825952840af56

12 files changed, 307 insertions, 51 deletions

diff --git a/firmware/SOURCES b/firmware/SOURCES
index 71194748f9..0cfea38272 100644
--- a/firmware/SOURCES
+++ b/firmware/SOURCES
@@ -519,6 +519,7 @@ drivers/audio/es9018.c
 drivers/audio/es9218.c
 #elif defined (HAVE_EROS_QN_CODEC)
 drivers/audio/eros_qn_codec.c
+drivers/audio/es9018k2m.c
 #endif /* defined(HAVE_*) */
 #else /* PLATFORM_HOSTED */
 #if defined(SAMSUNG_YPR0) && defined(HAVE_AS3514)
diff --git a/firmware/drivers/audio/eros_qn_codec.c b/firmware/drivers/audio/eros_qn_codec.c
index 39a421ee92..095b3b5305 100644
--- a/firmware/drivers/audio/eros_qn_codec.c
+++ b/firmware/drivers/audio/eros_qn_codec.c
@@ -26,56 +26,30 @@
 #include "audiohw.h"
 #include "settings.h"
 #include "pcm_sw_volume.h"
-#include "gpio-x1000.h"
 
-static long int vol_l_hw = 0;
-static long int vol_r_hw = 0;
+#include "gpio-x1000.h"
 
-/* internal: Switch the output sink. 0 - headphones, 1 - line out */
-void audiohw_switch_output(int select);
+static long int vol_l_hw = PCM5102A_VOLUME_MIN;
+static long int vol_r_hw = PCM5102A_VOLUME_MIN;
+int es9018k2m_present_flag = 0;
 
-void dac_set_outputs(void)
+void eros_qn_set_outputs(void)
 {
     audiohw_set_volume(vol_l_hw, vol_r_hw);
 }
 
-/* this makes less sense here than it does in the audiohw-*.c file,
- * but we need access to settings.h */
-void audiohw_set_volume(int vol_l, int vol_r)
+void eros_qn_set_last_vol(long int vol_l, long int vol_r)
 {
-    int l, r;
-
     vol_l_hw = vol_l;
     vol_r_hw = vol_r;
+}
 
-    l = vol_l;
-    r = vol_r;
-
-#if (defined(HAVE_HEADPHONE_DETECTION) && defined(HAVE_LINEOUT_DETECTION))
-    /* make sure headphones aren't present - don't want to
-     * blow out our eardrums cranking it to full */
-    if (lineout_inserted() && !headphones_inserted())
-    {
-        audiohw_switch_output(1);
-
-        l = r = global_settings.volume_limit * 10;
-    }
-    else
-    {
-        audiohw_switch_output(0);
-        
-        l = vol_l;
-        r = vol_r;
-    }
-#endif
-
-    l = l <= PCM5102A_VOLUME_MIN ? PCM_MUTE_LEVEL : (l / 20);
-    r = r <= PCM5102A_VOLUME_MIN ? PCM_MUTE_LEVEL : (r / 20);
-
-    pcm_set_master_volume(l, r);
+int eros_qn_get_volume_limit(void)
+{
+    return (global_settings.volume_limit * 10);
 }
 
-void audiohw_switch_output(int select)
+void eros_qn_switch_output(int select)
 {
     if (select == 0)
     {
@@ -85,4 +59,4 @@ void audiohw_switch_output(int select)
     {
         gpio_set_level(GPIO_STEREOSW_SEL, 1);
     }
-}
+}
\ No newline at end of file
diff --git a/firmware/drivers/audio/es9018.c b/firmware/drivers/audio/es9018.c
index 89e8c1d46f..6a73f7a2d3 100644
--- a/firmware/drivers/audio/es9018.c
+++ b/firmware/drivers/audio/es9018.c
@@ -25,8 +25,8 @@
 #include "audio.h"
 #include "audiohw.h"
 
-/* NOTE:  The register names are not known, as the register numbering
-   listed in the ES9018 datasheet does not match what is described below.. */
+/* NOTE: This implementation is specifically for the ES9018K2M, which has a different register
+ * structure from the ES9018. */
 
 static uint8_t reg0  = 0x00; /* System settings. Default value of register 0 */
 static uint8_t reg1  = 0x80; /* Input settings. Manual input, I2S, 32-bit (?) */
diff --git a/firmware/drivers/audio/es9018k2m.c b/firmware/drivers/audio/es9018k2m.c
new file mode 100644
index 0000000000..e19cf6e8a9
--- /dev/null
+++ b/firmware/drivers/audio/es9018k2m.c
@@ -0,0 +1,119 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   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.
+ *
+ ****************************************************************************/
+
+#include "system.h"
+#include "es9018k2m.h"
+#include "i2c-async.h"
+#include "action.h"
+
+//======================================================================================
+// ES9018K2M support stuff
+
+#ifndef ES9018K2M_BUS
+# error "No definition for ES9018K2M I2C bus!"
+#endif
+
+#ifndef ES9018K2M_ADDR
+# error "No definition for ES9018K2M I2C address!"
+#endif
+
+static int vol_tenthdb2hw(const int tdb)
+{
+    if (tdb < ES9018K2M_VOLUME_MIN) {
+        return 0xff;
+    } else if (tdb > ES9018K2M_VOLUME_MAX) {
+        return 0x00;
+    } else {
+        return (-tdb/5);
+    }
+}
+
+/* NOTE: This implementation is for the ES9018K2M specifically. */
+/* Register defaults from the datasheet. */
+/* These are basically just for reference. All defaults work out for us.
+ * static uint8_t reg0_system_settings         = 0x00; // System settings. Default value of register 0
+ * static uint8_t reg1_input_configuration     = 0x8C; // Input settings. I2S input, 32-bit
+ * static uint8_t reg4_automute_time           = 0x00; // Automute time. Default = disabled
+ * static uint8_t reg5_automute_level          = 0x68; // Automute level. Default is some level
+ * static uint8_t reg6_deemphasis              = 0x4A; // Deemphasis. Default = disabled
+ * static uint8_t reg7_general_settings        = 0x80; // General settings. Default sharp fir, pcm iir and unmuted
+ * static uint8_t reg8_gpio_configuration      = 0x10; // GPIO configuration
+ * static uint8_t reg10_master_mode_control    = 0x05; // Master Mode Control. Default value: master mode off
+ * static uint8_t reg11_channel_mapping        = 0x02; // Channel Mapping. Default stereo is Ch1=left, Ch2=right
+ * static uint8_t reg12_dpll_settings          = 0x5A; // DPLL Settings. Default = 5 for I2S, A for DSD
+ * static uint8_t reg13_thd_comp               = 0x40; // THD Compensation
+ * static uint8_t reg14_softstart_settings     = 0x8A; // Soft Start Settings
+ * static uint8_t reg21_gpio_input_selection   = 0x00; // Oversampling filter. Default: oversampling ON
+ */
+
+static uint8_t vol_reg_l = ES9018K2M_REG15_VOLUME_L;
+static uint8_t reg15_vol_l = 0;
+i2c_descriptor vol_desc_l = {
+    .slave_addr = ES9018K2M_ADDR,
+    .bus_cond = I2C_START | I2C_STOP,
+    .tran_mode = I2C_WRITE,
+    .buffer[0] = &vol_reg_l,
+    .count[0] = 1,
+    .buffer[1] = &reg15_vol_l,
+    .count[1] = 1,
+    .callback = NULL,
+    .arg = 0,
+    .next = NULL,
+};
+
+static uint8_t vol_reg_r = ES9018K2M_REG16_VOLUME_R;
+static uint8_t reg16_vol_r = 0;
+i2c_descriptor vol_desc_r = {
+    .slave_addr = ES9018K2M_ADDR,
+    .bus_cond = I2C_START | I2C_STOP,
+    .tran_mode = I2C_WRITE,
+    .buffer[0] = &vol_reg_r,
+    .count[0] = 1,
+    .buffer[1] = &reg16_vol_r,
+    .count[1] = 1,
+    .callback = NULL,
+    .arg = 0,
+    .next = NULL,
+};
+
+void es9018k2m_set_volume(int vol_l, int vol_r)
+{
+    /* Queue writes to the DAC's volume.
+     * Note that this needs to be done asynchronously. From testing, calling
+     * synchronous writes from HP/LO detect causes hangs. */
+    reg15_vol_l = vol_tenthdb2hw(vol_l);
+    reg16_vol_r = vol_tenthdb2hw(vol_r);
+    i2c_async_queue(ES9018K2M_BUS, TIMEOUT_NOBLOCK, I2C_Q_ADD, 0, &vol_desc_l);
+    i2c_async_queue(ES9018K2M_BUS, TIMEOUT_NOBLOCK, I2C_Q_ADD, 0, &vol_desc_r);
+}
+
+/* returns I2C_STATUS_OK upon success, I2C_STATUS_* errors upon error */
+int es9018k2m_write_reg(uint8_t reg, uint8_t val)
+{
+    return i2c_reg_write1(ES9018K2M_BUS, ES9018K2M_ADDR, reg, val);
+}
+
+/* returns register value, or -1 upon error */
+int es9018k2m_read_reg(uint8_t reg)
+{
+    return i2c_reg_read1(ES9018K2M_BUS, ES9018K2M_ADDR, reg);
+}
\ No newline at end of file
diff --git a/firmware/export/audiohw.h b/firmware/export/audiohw.h
index 3f8b48d750..067118000e 100644
--- a/firmware/export/audiohw.h
+++ b/firmware/export/audiohw.h
@@ -214,6 +214,7 @@ struct sound_settings_info
 #include "pcm1792.h"
 #elif defined(HAVE_EROS_QN_CODEC)
 #include "eros_qn_codec.h"
+#include "es9018k2m.h"
 #elif defined(HAVE_NWZ_LINUX_CODEC)
 #include "nwzlinux_codec.h"
 #elif defined(HAVE_CS4398)
diff --git a/firmware/export/eros_qn_codec.h b/firmware/export/eros_qn_codec.h
index bf108aa1c7..223ef06779 100644
--- a/firmware/export/eros_qn_codec.h
+++ b/firmware/export/eros_qn_codec.h
@@ -32,13 +32,25 @@
 #define PCM5102A_VOLUME_MIN -740
 #define PCM5102A_VOLUME_MAX -20
 
-/* a small DC offset prevents play/pause clicking due to the DAC auto-muting */
+/* a small DC offset prevents play/pause clicking due to the PCM5102A DAC auto-muting */
 #define PCM_DC_OFFSET_VALUE -1
 
 AUDIOHW_SETTING(VOLUME, "dB", 0, 2, PCM5102A_VOLUME_MIN/10, PCM5102A_VOLUME_MAX/10, 0)
 
+/* flag indicating whether this is a new revision unit with the ES9018K2M DAC */
+extern int es9018k2m_present_flag;
+
+/* Switch the output sink. 0 - headphones, 1 - line out */
+void eros_qn_switch_output(int select);
+
+/* Record last volume setting for switching between headphones/line out */
+void eros_qn_set_last_vol(long int vol_l, long int vol_r);
+
 /* this just calls audiohw_set_volume() with the last (locally) known volume,
  * used for switching to/from fixed line out volume. */
-void dac_set_outputs(void);
+void eros_qn_set_outputs(void);
+
+/* returns (global_settings.volume_limit * 10) */
+int eros_qn_get_volume_limit(void);
 
 #endif
diff --git a/firmware/export/es9018k2m.h b/firmware/export/es9018k2m.h
new file mode 100644
index 0000000000..035a607030
--- /dev/null
+++ 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
\ No newline at end of file
diff --git a/firmware/target/mips/ingenic_x1000/debug-x1000.c b/firmware/target/mips/ingenic_x1000/debug-x1000.c
index 236442a880..827bb37855 100644
--- a/firmware/target/mips/ingenic_x1000/debug-x1000.c
+++ b/firmware/target/mips/ingenic_x1000/debug-x1000.c
@@ -121,6 +121,9 @@ extern volatile unsigned aic_tx_underruns;
 #ifdef HAVE_RECORDING
 extern volatile unsigned aic_rx_overruns;
 #endif
+#ifdef HAVE_EROS_QN_CODEC
+extern int es9018k2m_present_flag;
+#endif
 
 static bool dbg_audio(void)
 {
@@ -130,6 +133,16 @@ static bool dbg_audio(void)
 #ifdef HAVE_RECORDING
         lcd_putsf(0, 1, "RX overruns:  %u", aic_rx_overruns);
 #endif
+#ifdef HAVE_EROS_QN_CODEC
+        if (es9018k2m_present_flag)
+        {
+            lcd_putsf(0, 2, "(%d) ES9018K2M HWVOL", es9018k2m_present_flag);
+        }
+        else
+        {
+            lcd_putsf(0, 2, "(%d) SWVOL", es9018k2m_present_flag);
+        }
+#endif
         lcd_update();
     } while(get_action(CONTEXT_STD, HZ) != ACTION_STD_CANCEL);
 
diff --git a/firmware/target/mips/ingenic_x1000/erosqnative/audiohw-erosqnative.c b/firmware/target/mips/ingenic_x1000/erosqnative/audiohw-erosqnative.c
index c53da728ff..1e3e7f0b7f 100644
--- a/firmware/target/mips/ingenic_x1000/erosqnative/audiohw-erosqnative.c
+++ b/firmware/target/mips/ingenic_x1000/erosqnative/audiohw-erosqnative.c
@@ -19,13 +19,19 @@
  *
  ****************************************************************************/
 
-#include "audiohw.h"
 #include "system.h"
+#include "audiohw.h"
+#include "pcm_sw_volume.h"
 #include "pcm_sampr.h"
+#include "i2c-target.h"
+#include "button.h"
+
+// #define LOGF_ENABLE
+#include "logf.h"
+
 #include "aic-x1000.h"
 #include "i2c-x1000.h"
 #include "gpio-x1000.h"
-#include "logf.h"
 
 /*
  * Earlier devices audio path appears to be:
@@ -42,7 +48,7 @@ void audiohw_init(void)
     /* explicitly mute everything */
     gpio_set_level(GPIO_HPAMP_SHDN, 0);
     gpio_set_level(GPIO_STEREOSW_MUTE, 1);
-    gpio_set_level(GPIO_DAC_XMIT, 0);
+    gpio_set_level(GPIO_DAC_PWR, 0);
 
     aic_set_play_last_sample(true);
     aic_set_external_codec(true);
@@ -81,18 +87,34 @@ void audiohw_postinit(void)
     gpio_set_level(GPIO_STEREOSW_SEL, 0);
     gpio_set_level(GPIO_HPAMP_SHDN, 1);
     mdelay(10);
-    gpio_set_level(GPIO_DAC_XMIT, 1);
+    gpio_set_level(GPIO_DAC_PWR, 1);
     mdelay(10);
     gpio_set_level(GPIO_STEREOSW_MUTE, 0);
+
+    i2c_x1000_set_freq(ES9018K2M_BUS, I2C_FREQ_400K);
+
+    int ret = es9018k2m_read_reg(ES9018K2M_REG0_SYSTEM_SETTINGS);
+    if (ret >= 0) /* Detected ES9018K2M DAC */
+    {
+        logf("ES9018K2M found: ret=%d", ret);
+        es9018k2m_present_flag = 1;
+
+       /* Default is 32-bit data, and it works ok. Enabling the following
+        * causes issue. Which is weird, I definitely thought AIC was configured
+        * for 24-bit data... */
+        // es9018k2m_write_reg(ES9018K2M_REG1_INPUT_CONFIG, 0b01001100); // 24-bit data
+
+    } else { /* Default to SWVOL for PCM5102A DAC */
+        logf("Default to SWVOL: ret=%d", ret);
+    }
 }
 
-/* TODO: get shutdown just right according to dac datasheet */
 void audiohw_close(void)
 {
     /* mute - attempt to make power-off pop-free */
     gpio_set_level(GPIO_STEREOSW_MUTE, 1);
     mdelay(10);
-    gpio_set_level(GPIO_DAC_XMIT, 0);
+    gpio_set_level(GPIO_DAC_PWR, 0);
     mdelay(10);
     gpio_set_level(GPIO_HPAMP_SHDN, 0);
 }
@@ -107,3 +129,46 @@ void audiohw_set_frequency(int fsel)
     aic_enable_i2s_bit_clock(true);
 }
 
+void audiohw_set_volume(int vol_l, int vol_r)
+{
+    int l, r;
+
+    eros_qn_set_last_vol(vol_l, vol_r);
+
+    l = vol_l;
+    r = vol_r;
+
+#if (defined(HAVE_HEADPHONE_DETECTION) && defined(HAVE_LINEOUT_DETECTION))
+    /* make sure headphones aren't present - don't want to
+     * blow out our eardrums cranking it to full */
+    if (lineout_inserted() && !headphones_inserted())
+    {
+        eros_qn_switch_output(1);
+
+        l = r = eros_qn_get_volume_limit();
+    }
+    else
+    {
+        eros_qn_switch_output(0);
+    }
+#endif
+
+    if (es9018k2m_present_flag) /* ES9018K2M */
+    {
+        /* Same volume range and mute point for both DACs, so use PCM5102A_VOLUME_MIN */
+        l = l <= PCM5102A_VOLUME_MIN ? PCM_MUTE_LEVEL : l;
+        r = r <= PCM5102A_VOLUME_MIN ? PCM_MUTE_LEVEL : r;
+
+        /* set software volume just below unity due to
+         * DAC offset. We don't want to overflow the PCM system. */
+        pcm_set_master_volume(-1, -1);
+        es9018k2m_set_volume(l, r);
+    }
+    else /* PCM5102A */
+    {
+        l = l <= PCM5102A_VOLUME_MIN ? PCM_MUTE_LEVEL : (l / 20);
+        r = r <= PCM5102A_VOLUME_MIN ? PCM_MUTE_LEVEL : (r / 20);
+
+        pcm_set_master_volume(l, r);
+    }
+}
\ No newline at end of file
diff --git a/firmware/target/mips/ingenic_x1000/erosqnative/button-erosqnative.c b/firmware/target/mips/ingenic_x1000/erosqnative/button-erosqnative.c
index d82cb5b5dc..0d2207af2a 100644
--- a/firmware/target/mips/ingenic_x1000/erosqnative/button-erosqnative.c
+++ b/firmware/target/mips/ingenic_x1000/erosqnative/button-erosqnative.c
@@ -127,7 +127,7 @@ bool headphones_inserted(void)
     {
         hp_detect_reg_old = hp_detect_reg;
 #if !defined(BOOTLOADER)
-        dac_set_outputs();
+        eros_qn_set_outputs();
 #endif
     }
     return hp_detect_reg & 0x10 ? false : true;
@@ -140,7 +140,7 @@ bool lineout_inserted(void)
     {
         hp_detect_reg_old = hp_detect_reg;
 #if !defined(BOOTLOADER)
-        dac_set_outputs();
+        eros_qn_set_outputs();
 #endif
     }
     return hp_detect_reg & 0x20 ? false : true;
diff --git a/firmware/target/mips/ingenic_x1000/erosqnative/gpio-target.h b/firmware/target/mips/ingenic_x1000/erosqnative/gpio-target.h
index 3318a39786..72052c261f 100644
--- a/firmware/target/mips/ingenic_x1000/erosqnative/gpio-target.h
+++ b/firmware/target/mips/ingenic_x1000/erosqnative/gpio-target.h
@@ -15,17 +15,21 @@
 
 /* ---------------------------------------------- */
 
+
 /*              Name            Port    Pins            Function */
 DEFINE_PINGROUP(LCD_DATA,       GPIO_A, 0xffff <<  0,   GPIOF_DEVICE(1))
 DEFINE_PINGROUP(LCD_CONTROL,    GPIO_B,   0x1a << 16,   GPIOF_DEVICE(1))
 DEFINE_PINGROUP(MSC0,           GPIO_A,   0x3f << 20,   GPIOF_DEVICE(1))
 DEFINE_PINGROUP(SFC,            GPIO_A,   0x3f << 26,   GPIOF_DEVICE(1))
 DEFINE_PINGROUP(I2S,            GPIO_B,   0x1f <<  0,   GPIOF_DEVICE(1))
+DEFINE_PINGROUP(I2C1,           GPIO_C,      3 << 26,   GPIOF_DEVICE(0))
 DEFINE_PINGROUP(I2C2,           GPIO_D,      3 <<  0,   GPIOF_DEVICE(1))
 
 /*          Name                Pin             Function */
 /* mute DAC: 0 - mute, 1 - play */
-DEFINE_GPIO(DAC_XMIT,           GPIO_PB(12),    GPIOF_OUTPUT(0))
+/* Note: This seems to actually be power to the DAC in general,
+ * at least on the ES9018K2M devices. Was "DAC_XMIT". */
+DEFINE_GPIO(DAC_PWR,           GPIO_PB(12),    GPIOF_OUTPUT(0))
 
 /* mute HP amp: 0 - mute, 1 - play */
 DEFINE_GPIO(HPAMP_SHDN,         GPIO_PB(8),     GPIOF_OUTPUT(0))
diff --git a/firmware/target/mips/ingenic_x1000/erosqnative/i2c-target.h b/firmware/target/mips/ingenic_x1000/erosqnative/i2c-target.h
index 8d0b8a6e20..89d995f33a 100644
--- a/firmware/target/mips/ingenic_x1000/erosqnative/i2c-target.h
+++ b/firmware/target/mips/ingenic_x1000/erosqnative/i2c-target.h
@@ -25,6 +25,9 @@
 #define I2C_ASYNC_BUS_COUNT  3
 #define I2C_ASYNC_QUEUE_SIZE 4
 
+#define ES9018K2M_BUS 1
+#define ES9018K2M_ADDR 0x48
+
 #define AXP_PMU_BUS  2
 #define AXP_PMU_ADDR 0x34