Add support for Atmega32A to pin declarations and universal matrix (#4015)

* add computed pins from mcu type

* update for atmega32a

* doc typo

* add atmega16 chips, link to references

* remove avr include from config

* exclude assembler in config.h includes

* consolodate options, add 646

* fix typo in pindef

2 files changed, 113 insertions, 63 deletions

diff --git a/quantum/config_common.h b/quantum/config_common.h
index 288617255..cbff372ea 100644
--- a/quantum/config_common.h
+++ b/quantum/config_common.h
@@ -1,4 +1,4 @@
-/* Copyright 2015-2017 Jack Humbert
+/* Copyright 2015-2018 Jack Humbert
  *
  * 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
@@ -14,8 +14,7 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef CONFIG_DEFINITIONS_H
-#define CONFIG_DEFINITIONS_H
+#pragma once
 
 /* diode directions */
 #define COL2ROW       0
@@ -23,57 +22,108 @@
 #define CUSTOM_MATRIX 2 /* Disables built-in matrix scanning code */
 
 #ifdef __AVR__
+    #ifndef __ASSEMBLER__
+      #include <avr/io.h>
+    #endif
+    #define PORT_SHIFTER 4 // this may be 4 for all AVR chips
+
+    // If you want to add more to this list, reference the PINx definitions in these header
+    // files: https://github.com/vancegroup-mirrors/avr-libc/tree/master/avr-libc/include/avr
+
+    #if defined(__AVR_ATmega32U4__) || defined(__AVR_ATmega16U4__)
+        #define ADDRESS_BASE 0x00
+        #define PINB_ADDRESS 0x3
+        #define PINC_ADDRESS 0x6
+        #define PIND_ADDRESS 0x9
+        #define PINE_ADDRESS 0xC
+        #define PINF_ADDRESS 0xF
+    #elif defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega16U2__)
+        #define ADDRESS_BASE 0x00
+        #define PINB_ADDRESS 0x3
+        #define PINC_ADDRESS 0x6
+        #define PIND_ADDRESS 0x9
+    #elif defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB646__)
+        #define ADDRESS_BASE 0x00
+        #define PINA_ADDRESS 0x0
+        #define PINB_ADDRESS 0x3
+        #define PINC_ADDRESS 0x6
+        #define PIND_ADDRESS 0x9
+        #define PINE_ADDRESS 0xC
+        #define PINF_ADDRESS 0xF
+    #elif defined(__AVR_ATmega32A__)
+        #define ADDRESS_BASE 0x10
+        #define PIND_ADDRESS 0x0
+        #define PINC_ADDRESS 0x3
+        #define PINB_ADDRESS 0x6
+        #define PINA_ADDRESS 0x9
+    #else
+        #error "Pins are not defined"
+    #endif
+
     /* I/O pins */
-    #ifndef F0
-        #define B0 0x30
-        #define B1 0x31
-        #define B2 0x32
-        #define B3 0x33
-        #define B4 0x34
-        #define B5 0x35
-        #define B6 0x36
-        #define B7 0x37
-        #define C0 0x60
-        #define C1 0x61
-        #define C2 0x62
-        #define C3 0x63
-        #define C4 0x64
-        #define C5 0x65
-        #define C6 0x66
-        #define C7 0x67
-        #define D0 0x90
-        #define D1 0x91
-        #define D2 0x92
-        #define D3 0x93
-        #define D4 0x94
-        #define D5 0x95
-        #define D6 0x96
-        #define D7 0x97
-        #define E0 0xC0
-        #define E1 0xC1
-        #define E2 0xC2
-        #define E3 0xC3
-        #define E4 0xC4
-        #define E5 0xC5
-        #define E6 0xC6
-        #define E7 0xC7
-        #define F0 0xF0
-        #define F1 0xF1
-        #define F2 0xF2
-        #define F3 0xF3
-        #define F4 0xF4
-        #define F5 0xF5
-        #define F6 0xF6
-        #define F7 0xF7
-        #define A0 0x00
-        #define A1 0x01
-        #define A2 0x02
-        #define A3 0x03
-        #define A4 0x04
-        #define A5 0x05
-        #define A6 0x06
-        #define A7 0x07
+    #define PINDEF(port, pin) ((PIN##port##_ADDRESS << PORT_SHIFTER) | pin)
+
+    #ifdef PORTA
+        #define A0 PINDEF(A, 0)
+        #define A1 PINDEF(A, 1)
+        #define A2 PINDEF(A, 2)
+        #define A3 PINDEF(A, 3)
+        #define A4 PINDEF(A, 4)
+        #define A5 PINDEF(A, 5)
+        #define A6 PINDEF(A, 6)
+        #define A7 PINDEF(A, 7)
+    #endif
+    #ifdef PORTB
+        #define B0 PINDEF(B, 0)
+        #define B1 PINDEF(B, 1)
+        #define B2 PINDEF(B, 2)
+        #define B3 PINDEF(B, 3)
+        #define B4 PINDEF(B, 4)
+        #define B5 PINDEF(B, 5)
+        #define B6 PINDEF(B, 6)
+        #define B7 PINDEF(B, 7)
     #endif
+    #ifdef PORTC
+        #define C0 PINDEF(C, 0)
+        #define C1 PINDEF(C, 1)
+        #define C2 PINDEF(C, 2)
+        #define C3 PINDEF(C, 3)
+        #define C4 PINDEF(C, 4)
+        #define C5 PINDEF(C, 5)
+        #define C6 PINDEF(C, 6)
+        #define C7 PINDEF(C, 7)
+    #endif
+    #ifdef PORTD
+        #define D0 PINDEF(D, 0)
+        #define D1 PINDEF(D, 1)
+        #define D2 PINDEF(D, 2)
+        #define D3 PINDEF(D, 3)
+        #define D4 PINDEF(D, 4)
+        #define D5 PINDEF(D, 5)
+        #define D6 PINDEF(D, 6)
+        #define D7 PINDEF(D, 7)
+    #endif
+    #ifdef PORTE
+        #define E0 PINDEF(E, 0)
+        #define E1 PINDEF(E, 1)
+        #define E2 PINDEF(E, 2)
+        #define E3 PINDEF(E, 3)
+        #define E4 PINDEF(E, 4)
+        #define E5 PINDEF(E, 5)
+        #define E6 PINDEF(E, 6)
+        #define E7 PINDEF(E, 7)
+    #endif
+    #ifdef PORTF
+        #define F0 PINDEF(F, 0)
+        #define F1 PINDEF(F, 1)
+        #define F2 PINDEF(F, 2)
+        #define F3 PINDEF(F, 3)
+        #define F4 PINDEF(F, 4)
+        #define F5 PINDEF(F, 5)
+        #define F6 PINDEF(F, 6)
+        #define F7 PINDEF(F, 7)
+    #endif
+
 #elif defined(PROTOCOL_CHIBIOS)
     #define A0  PAL_LINE(GPIOA, 0)
     #define A1  PAL_LINE(GPIOA, 1)
@@ -200,5 +250,3 @@
 #define API_SYSEX_MAX_SIZE 32
 
 #include "song_list.h"
-
-#endif
diff --git a/quantum/quantum.h b/quantum/quantum.h
index 1d3ee033f..fe670c8eb 100644
--- a/quantum/quantum.h
+++ b/quantum/quantum.h
@@ -140,26 +140,28 @@ extern uint32_t default_layer_state;
 
 //Function substitutions to ease GPIO manipulation
 #ifdef __AVR__
+    #define PIN_ADDRESS(p, offset) _SFR_IO8(ADDRESS_BASE + (p >> PORT_SHIFTER) + offset)
+
     #define pin_t uint8_t
-    #define setPinInput(pin) _SFR_IO8((pin >> 4) + 1) &= ~ _BV(pin & 0xF)
+    #define setPinInput(pin) PIN_ADDRESS(pin, 1) &= ~ _BV(pin & 0xF)
     #define setPinInputHigh(pin) ({\
-            _SFR_IO8((pin >> 4) + 1) &= ~ _BV(pin & 0xF);\
-            _SFR_IO8((pin >> 4) + 2) |=   _BV(pin & 0xF);\
+            PIN_ADDRESS(pin, 1) &= ~ _BV(pin & 0xF);\
+            PIN_ADDRESS(pin, 2) |=   _BV(pin & 0xF);\
             })
     #define setPinInputLow(pin) _Static_assert(0, "AVR Processors cannot impliment an input as pull low")
-    #define setPinOutput(pin) _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF)
+    #define setPinOutput(pin) PIN_ADDRESS(pin, 1) |= _BV(pin & 0xF)
 
-    #define writePinHigh(pin) _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF)
-    #define writePinLow(pin) _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF)
+    #define writePinHigh(pin) PIN_ADDRESS(pin, 2) |=  _BV(pin & 0xF)
+    #define writePinLow(pin) PIN_ADDRESS(pin, 2) &= ~_BV(pin & 0xF)
     static inline void writePin(pin_t pin, uint8_t level){
         if (level){
-            _SFR_IO8((pin >> 4) + 2) |=  _BV(pin & 0xF);
+            PIN_ADDRESS(pin, 2) |=  _BV(pin & 0xF);
         } else {
-            _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF);
+            PIN_ADDRESS(pin, 2) &= ~_BV(pin & 0xF);
         }
     }
 
-    #define readPin(pin) (_SFR_IO8(pin >> 4) & _BV(pin & 0xF))
+    #define readPin(pin) (PIN_ADDRESS(pin, 0) & _BV(pin & 0xF))
 #elif defined(PROTOCOL_CHIBIOS)
     #define pin_t ioline_t
     #define setPinInput(pin) palSetLineMode(pin, PAL_MODE_INPUT)