New Port: Eros Q Native

What works:
- LCD: 16-bit RGB565
- all buttons, including scrollwheel
- SD Card
- Battery level and charging/not charging status
- USB
- audio
- sample rate switching
- HP / LO detect, with "safe" fixed LO volume -
   LO volume will only be put to user-defined max volume
   if headphones are not present.
- rtc
- Plugins build, tried a couple and they seem OK
- Bootloader, installable to nand via usbboot

What doesn't work:
- Dual Boot
- power on/off has intermittent, low volume audio click
   (sometimes it's completely silent, sometimes there's
    a click)
- Audio uses 16-bit volume scaling, so clicking/popping
   is pretty bad at lower volumes - need 32 bit volume
   scaling, 24 bit I2S data
- USB HID keys not yet defined
- no jztool support

Unknowns:
- Stereo Switch pins: Direction select, AC_DC
   (probably not even hooked up)
- What is the actual purpose of the Stereo Swtich?
- How does the bluetooth module connect?

"Someday" stuff:
- get LCD working at higher bit depth
- Bluetooth

Change-Id: I70dda8fc092c6e3f4352f2245e4164193f803c33

firmware/export/audiohw.h

@@ -210,6 +210,8 @@ struct sound_settings_info
 #include "df1704.h"
 #elif defined(HAVE_PCM1792_CODEC)
 #include "pcm1792.h"
+#elif defined(HAVE_EROS_QN_CODEC)
+#include "eros_qn_codec.h"
 #elif defined(HAVE_NWZ_LINUX_CODEC)
 #include "nwzlinux_codec.h"
 #elif defined(HAVE_CS4398)

firmware/export/config.h

@@ -276,6 +276,7 @@
 #define LCD_IHIFI800      68 /* as used by IHIFI 800 */
 #define LCD_FIIOM3K       69 /* as used by the FiiO M3K */
 #define LCD_SHANLING_Q1   70 /* as used by the Shanling Q1 */
+#define LCD_EROSQ         71 /* as used by the ErosQ (native) */
 
 /* LCD_PIXELFORMAT */
 #define HORIZONTAL_PACKING 1
@@ -596,6 +597,8 @@ Lyre prototype 1 */
 #include "config/aigoerosq.h"
 #elif defined(SHANLING_Q1)
 #include "config/shanlingq1.h"
+#elif defined(EROS_QN)
+#include "config/erosqnative.h"
 #else
 //#error "unknown hwardware platform!"
 #endif

firmware/export/config/erosqnative.h

@@ -0,0 +1,125 @@
+/*
+ * This config file is for the AIGO EROS Q / EROS K (and its clones)
+ */
+
+/* For Rolo and boot loader */
+#define MODEL_NAME   "AIGO Eros Q Native"
+#define MODEL_NUMBER 116
+#define BOOTFILE_EXT "erosq"
+#define BOOTFILE     "rockbox." BOOTFILE_EXT
+#define BOOTDIR      "/.rockbox"
+#define FIRMWARE_OFFSET_FILE_CRC  0
+#define FIRMWARE_OFFSET_FILE_DATA 8
+
+/* CPU defines */
+#define CONFIG_CPU      X1000
+#define X1000_EXCLK_FREQ   24000000
+#define CPU_FREQ           1008000000
+#define HAVE_FPU
+
+#ifndef SIMULATOR
+#define TIMER_FREQ         X1000_EXCLK_FREQ
+#endif
+
+/* kernel defines */
+#define INCLUDE_TIMEOUT_API
+#define HAVE_SEMAPHORE_OBJECTS
+
+/* drivers */
+#define HAVE_I2C_ASYNC
+
+/* Buffers for plugsins and codecs */
+#define PLUGIN_BUFFER_SIZE 0x200000 /* 2 MiB */
+#define CODEC_SIZE         0x100000 /* 1 MiB */
+
+/* LCD defines */
+#define CONFIG_LCD   LCD_EROSQ
+#define LCD_WIDTH  320
+#define LCD_HEIGHT 240
+#define LCD_DEPTH  16 /* Future Improvement: 18 or 24 bpp if display supports it */
+#define LCD_PIXELFORMAT  RGB565
+/* sqrt(240^2 + 320^2) / 2.0 = 200 */
+#define LCD_DPI 200
+#define HAVE_LCD_COLOR
+#define HAVE_LCD_BITMAP
+#define HAVE_LCD_ENABLE
+#define HAVE_LCD_SHUTDOWN
+#define LCD_X1000_FASTSLEEP
+//#define LCD_X1000_DMA_WAITFORFRAME
+
+#define HAVE_BACKLIGHT
+#define HAVE_BACKLIGHT_BRIGHTNESS
+#define MIN_BRIGHTNESS_SETTING      1
+#define MAX_BRIGHTNESS_SETTING      255
+#define BRIGHTNESS_STEP             5
+#define DEFAULT_BRIGHTNESS_SETTING  70
+#define CONFIG_BACKLIGHT_FADING BACKLIGHT_FADING_SW_SETTING
+
+/* RTC settings */
+#define CONFIG_RTC      RTC_X1000
+
+/* Codec / audio hardware defines */
+#define HW_SAMPR_CAPS SAMPR_CAP_ALL_192
+#define HAVE_EROS_QN_CODEC
+#define HAVE_SW_TONE_CONTROLS
+#define HAVE_SW_VOLUME_CONTROL
+
+/* Button defines */
+#define CONFIG_KEYPAD   EROSQ_PAD
+#define HAVE_SCROLLWHEEL
+#define HAVE_HEADPHONE_DETECTION
+#define HAVE_LINEOUT_DETECTION
+
+/* Storage defines */
+#define CONFIG_STORAGE  STORAGE_SD
+#define HAVE_HOTSWAP
+#define HAVE_HOTSWAP_STORAGE_AS_MAIN
+#define HAVE_MULTIDRIVE
+#define NUM_DRIVES 1
+#define STORAGE_WANTS_ALIGN
+#define STORAGE_NEEDS_BOUNCE_BUFFER
+
+/* Power management */
+#define CONFIG_BATTERY_MEASURE VOLTAGE_MEASURE
+#define CONFIG_CHARGING        CHARGING_MONITOR
+#define HAVE_SW_POWEROFF
+
+#ifndef SIMULATOR
+#define HAVE_AXP_PMU 192
+#define HAVE_POWEROFF_WHILE_CHARGING
+#endif
+
+/* Battery */
+#define BATTERY_TYPES_COUNT  1
+#define BATTERY_CAPACITY_DEFAULT 1300 /* default battery capacity */
+#define BATTERY_CAPACITY_MIN 1300  /* min. capacity selectable */
+#define BATTERY_CAPACITY_MAX 1300 /* max. capacity selectable */
+#define BATTERY_CAPACITY_INC 0   /* capacity increment */
+
+#define CURRENT_NORMAL 100      // 1.7mA * 60s
+#define CURRENT_BACKLIGHT 180
+#define CURRENT_MAX_CHG 500     // bursts higher if needed
+
+/* USB support */
+#ifndef SIMULATOR
+#define CONFIG_USBOTG USBOTG_DESIGNWARE
+#define USB_DW_ARCH_SLAVE
+#define USB_DW_TURNAROUND 5
+#define HAVE_USBSTACK
+#define USB_VENDOR_ID 0xc502
+#define USB_PRODUCT_ID 0x0023
+#define USB_DEVBSS_ATTR __attribute__((aligned(32)))
+#define HAVE_USB_POWER
+#define HAVE_USB_CHARGING_ENABLE
+#define HAVE_BOOTLOADER_USB_MODE
+#endif
+
+/* Rockbox capabilities */
+#define HAVE_VOLUME_IN_LIST
+#define HAVE_FAT16SUPPORT
+#define HAVE_ALBUMART
+#define HAVE_BMP_SCALING
+#define HAVE_JPEG
+#define HAVE_TAGCACHE
+#define HAVE_QUICKSCREEN
+#define HAVE_HOTKEY

firmware/export/eros_qn_codec.h

@@ -0,0 +1,35 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ *
+ * Copyright (c) 2021 Andrew Ryabinin, 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 _EROS_QN_CODEC_H
+#define _EROS_QN_CODEC_H
+
+#define PCM5102A_VOLUME_MIN -740
+#define PCM5102A_VOLUME_MAX 0
+
+AUDIOHW_SETTING(VOLUME, "dB", 0, 1, PCM5102A_VOLUME_MIN/10, PCM5102A_VOLUME_MAX/10, 0)
+
+/* this just calls audiohw_set_volume() with the last (locally) known volume,
+ * used for switching to/from fixed line out volume. */
+void pcm5102_set_outputs(void);
+
+#endif