Merge ChibiOS and LUFA descriptor support (#2362)

* Move lufa descriptor to protocol/usb_descriptor

* Try to compile usb_descriptor on ChibiOS

* Add lufa_utils for ChibiOS

Lufa USB descriptors for ChibiOS

* More lufa_util compatibility fixes

* First compiling version of shared USB descriptor

* Send the usb descriptors

* Fix the CONSOLE output on ChibiOS

* Add errors for unsupported interfaces

* Enable support for vitual serial port USB descriptors

* Implement virtual serial port for ChibiOS

* Cleanup the lufa_utils

Use the default lufa header files

* Add raw hid support for ChibiOS

This is completely untested

* Enable midi compilation on ChibiOS

* Move midi functionality out of lufa.c

* Don't register sysex callback when not needed

* ChibiOS compilation fixes

* Update ChibiOS submodule

* Fix the Midi USB descriptor

It didn't work properly when both Midi and Virtual serial port was enabled.

* Add MIDI support for ChibiOS

* Fix USB descriptor strings on ChibiOS

* Use serial usb driver for raw hid

* Generalize the ChibiOS stream like drivers

This makes the initialization much more simple and eliminates a lot of
the code duplication.

* Convert console output to chibios stream driver

* Fixes for ChibiOS update

* Update the ChibiOS contrib submodule

To include the usb data toggle synchronization fixes

* Fix duplicate reset enumeration on ChibiOS

* Add missing include

* Add number of endpoints check for ChibiOS

* Enable serial USB driver on all keyboards

* Add missing includes when API is enabled withot midi

* Add another missing inlcude

3 files changed, 207 insertions, 1 deletions

diff --git a/tmk_core/protocol/midi/bytequeue/interrupt_setting.c b/tmk_core/protocol/midi/bytequeue/interrupt_setting.c
index eafef527c..0ab8b5462 100755
--- a/tmk_core/protocol/midi/bytequeue/interrupt_setting.c
+++ b/tmk_core/protocol/midi/bytequeue/interrupt_setting.c
@@ -1,5 +1,5 @@
 //Copyright 20010 Alex Norman
-//writen by Alex Norman 
+//writen by Alex Norman
 //
 //This file is part of avr-bytequeue.
 //
@@ -22,6 +22,7 @@
 //implementations of the typedef and these functions
 
 #include "interrupt_setting.h"
+#if defined(__AVR__)
 #include <avr/interrupt.h>
 
 interrupt_setting_t store_and_clear_interrupt(void) {
@@ -33,4 +34,16 @@ interrupt_setting_t store_and_clear_interrupt(void) {
 void restore_interrupt_setting(interrupt_setting_t setting) {
    SREG = setting;
 }
+#elif defined(__arm__)
+#include "ch.h"
+
+interrupt_setting_t store_and_clear_interrupt(void) {
+  chSysLock();
+  return 0;
+}
+
+void restore_interrupt_setting(interrupt_setting_t setting) {
+   chSysUnlock();
+}
+#endif
 
diff --git a/tmk_core/protocol/midi/qmk_midi.c b/tmk_core/protocol/midi/qmk_midi.c
new file mode 100644
index 000000000..d4de6caa7
--- /dev/null
+++ b/tmk_core/protocol/midi/qmk_midi.c
@@ -0,0 +1,184 @@
+#include <LUFA/Drivers/USB/USB.h>
+#include "qmk_midi.h"
+#include "sysex_tools.h"
+#include "midi.h"
+#include "usb_descriptor.h"
+#include "process_midi.h"
+#if API_SYSEX_ENABLE
+#include "api.h"
+#endif
+
+/*******************************************************************************
+ * MIDI
+ ******************************************************************************/
+
+MidiDevice midi_device;
+
+#define SYSEX_START_OR_CONT 0x40
+#define SYSEX_ENDS_IN_1 0x50
+#define SYSEX_ENDS_IN_2 0x60
+#define SYSEX_ENDS_IN_3 0x70
+
+#define SYS_COMMON_1 0x50
+#define SYS_COMMON_2 0x20
+#define SYS_COMMON_3 0x30
+
+static void usb_send_func(MidiDevice * device, uint16_t cnt, uint8_t byte0, uint8_t byte1, uint8_t byte2) {
+  MIDI_EventPacket_t event;
+  event.Data1 = byte0;
+  event.Data2 = byte1;
+  event.Data3 = byte2;
+
+  uint8_t cable = 0;
+
+  //if the length is undefined we assume it is a SYSEX message
+  if (midi_packet_length(byte0) == UNDEFINED) {
+    switch(cnt) {
+      case 3:
+        if (byte2 == SYSEX_END)
+          event.Event = MIDI_EVENT(cable, SYSEX_ENDS_IN_3);
+        else
+          event.Event = MIDI_EVENT(cable, SYSEX_START_OR_CONT);
+        break;
+      case 2:
+        if (byte1 == SYSEX_END)
+          event.Event = MIDI_EVENT(cable, SYSEX_ENDS_IN_2);
+        else
+          event.Event = MIDI_EVENT(cable, SYSEX_START_OR_CONT);
+        break;
+      case 1:
+        if (byte0 == SYSEX_END)
+          event.Event = MIDI_EVENT(cable, SYSEX_ENDS_IN_1);
+        else
+          event.Event = MIDI_EVENT(cable, SYSEX_START_OR_CONT);
+        break;
+      default:
+        return; //invalid cnt
+    }
+  } else {
+    //deal with 'system common' messages
+    //TODO are there any more?
+    switch(byte0 & 0xF0){
+      case MIDI_SONGPOSITION:
+        event.Event = MIDI_EVENT(cable, SYS_COMMON_3);
+        break;
+      case MIDI_SONGSELECT:
+      case MIDI_TC_QUARTERFRAME:
+        event.Event = MIDI_EVENT(cable, SYS_COMMON_2);
+        break;
+      default:
+        event.Event = MIDI_EVENT(cable, byte0);
+        break;
+    }
+  }
+
+  send_midi_packet(&event);
+}
+
+static void usb_get_midi(MidiDevice * device) {
+  MIDI_EventPacket_t event;
+  while (recv_midi_packet(&event)) {
+
+    midi_packet_length_t length = midi_packet_length(event.Data1);
+    uint8_t input[3];
+    input[0] = event.Data1;
+    input[1] = event.Data2;
+    input[2] = event.Data3;
+    if (length == UNDEFINED) {
+      //sysex
+      if (event.Event == MIDI_EVENT(0, SYSEX_START_OR_CONT) || event.Event == MIDI_EVENT(0, SYSEX_ENDS_IN_3)) {
+        length = 3;
+      } else if (event.Event == MIDI_EVENT(0, SYSEX_ENDS_IN_2)) {
+        length = 2;
+      } else if(event.Event ==  MIDI_EVENT(0, SYSEX_ENDS_IN_1)) {
+        length = 1;
+      } else {
+        //XXX what to do?
+      }
+    }
+
+    //pass the data to the device input function
+    if (length != UNDEFINED)
+      midi_device_input(device, length, input);
+  }
+}
+
+static void fallthrough_callback(MidiDevice * device,
+    uint16_t cnt, uint8_t byte0, uint8_t byte1, uint8_t byte2){
+
+#ifdef AUDIO_ENABLE
+  if (cnt == 3) {
+    switch (byte0 & 0xF0) {
+        case MIDI_NOTEON:
+            play_note(((double)261.6)*pow(2.0, -4.0)*pow(2.0,(byte1 & 0x7F)/12.0), (byte2 & 0x7F) / 8);
+            break;
+        case MIDI_NOTEOFF:
+            stop_note(((double)261.6)*pow(2.0, -4.0)*pow(2.0,(byte1 & 0x7F)/12.0));
+            break;
+    }
+  }
+  if (byte0 == MIDI_STOP) {
+    stop_all_notes();
+  }
+#endif
+}
+
+
+static void cc_callback(MidiDevice * device,
+    uint8_t chan, uint8_t num, uint8_t val) {
+  //sending it back on the next channel
+  // midi_send_cc(device, (chan + 1) % 16, num, val);
+}
+
+#ifdef API_SYSEX_ENABLE
+uint8_t midi_buffer[MIDI_SYSEX_BUFFER] = {0};
+
+static void sysex_callback(MidiDevice * device, uint16_t start, uint8_t length, uint8_t * data) {
+  // SEND_STRING("\n");
+  // send_word(start);
+  // SEND_STRING(": ");
+  // Don't store the header
+  int16_t pos = start - 4;
+  for (uint8_t place = 0; place < length; place++) {
+      // send_byte(*data);
+      if (pos >= 0) {
+          if (*data == 0xF7) {
+              // SEND_STRING("\nRD: ");
+              // for (uint8_t i = 0; i < start + place + 1; i++){
+              //     send_byte(midi_buffer[i]);
+              // SEND_STRING(" ");
+              // }
+              const unsigned decoded_length = sysex_decoded_length(pos);
+              uint8_t decoded[API_SYSEX_MAX_SIZE];
+              sysex_decode(decoded, midi_buffer, pos);
+              process_api(decoded_length, decoded);
+              return;
+          }
+          else if (pos >= MIDI_SYSEX_BUFFER) {
+              return;
+          }
+          midi_buffer[pos] = *data;
+      }
+      // SEND_STRING(" ");
+      data++;
+      pos++;
+  }
+}
+#endif
+
+void midi_init(void);
+
+void setup_midi(void)
+{
+#ifdef MIDI_ADVANCED
+        midi_init();
+#endif
+        midi_device_init(&midi_device);
+  midi_device_set_send_func(&midi_device, usb_send_func);
+  midi_device_set_pre_input_process_func(&midi_device, usb_get_midi);
+  midi_register_fallthrough_callback(&midi_device, fallthrough_callback);
+  midi_register_cc_callback(&midi_device, cc_callback);
+#ifdef API_SYSEX_ENABLE
+  midi_register_sysex_callback(&midi_device, sysex_callback);
+#endif
+}
diff --git a/tmk_core/protocol/midi/qmk_midi.h b/tmk_core/protocol/midi/qmk_midi.h
new file mode 100644
index 000000000..7282a19d4
--- /dev/null
+++ b/tmk_core/protocol/midi/qmk_midi.h
@@ -0,0 +1,9 @@
+#pragma once
+
+#ifdef MIDI_ENABLE
+  #include "midi.h"
+  extern MidiDevice midi_device;
+  void setup_midi(void);
+  void send_midi_packet(MIDI_EventPacket_t* event);
+  bool recv_midi_packet(MIDI_EventPacket_t* const event);
+#endif