From c5cc7d93afb9a5cc042d173c40c111ad2667d391 Mon Sep 17 00:00:00 2001
From: EkeEke <ekeeke31@gmail.com>
Date: Thu, 27 Jun 2013 01:49:10 +0200
Subject: [PATCH] [Core/Input] added support for XE-A1P analog controller on
 both ports

---
 core/input_hw/activator.c |  8 ++---
 core/input_hw/input.c     | 13 +++++--
 core/input_hw/paddle.c    |  4 +--
 core/input_hw/sportspad.c |  8 ++---
 core/input_hw/xe_a1p.c    | 74 +++++++++++++++++++++++++--------------
 core/input_hw/xe_a1p.h    |  8 +++--
 core/io_ctrl.c            | 11 ++++--
 gx/gui/menu.c             |  6 ----
 8 files changed, 82 insertions(+), 50 deletions(-)

diff --git a/core/input_hw/activator.c b/core/input_hw/activator.c
index f6fbdc9..2af22db 100644
--- a/core/input_hw/activator.c
+++ b/core/input_hw/activator.c
@@ -51,15 +51,15 @@ void activator_reset(int index)
   activator[index].Counter = 0;
 }
 
-INLINE unsigned char activator_read(int port)
+INLINE unsigned char activator_read(int index)
 {
   /* IR sensors 1-16 data (active low) */
-  uint16 data = ~input.pad[port << 2];
+  uint16 data = ~input.pad[index << 2];
 
   /* D1 = D0 (data is ready) */
-  uint8 temp = (activator[port].State & 0x01) << 1;
+  uint8 temp = (activator[index].State & 0x01) << 1;
 
-  switch (activator[port].Counter)
+  switch (activator[index].Counter)
   {
     case 0: /* x x x x 0 1 0 0 */
       temp |= 0x04;
diff --git a/core/input_hw/input.c b/core/input_hw/input.c
index 3ddced7..4506c1a 100644
--- a/core/input_hw/input.c
+++ b/core/input_hw/input.c
@@ -198,6 +198,13 @@ void input_init(void)
       break;
     }
 
+    case SYSTEM_XE_A1P:
+    {
+      input.dev[4] = DEVICE_XE_A1P;
+      player++;
+      break;
+    }
+
     case SYSTEM_MENACER:
     {
       input.dev[4] = DEVICE_LIGHTGUN;
@@ -305,19 +312,19 @@ void input_reset(void)
 
       case DEVICE_XE_A1P:
       {
-        xe_a1p_reset();
+        xe_a1p_reset(i);
         break;
       }
 
       case DEVICE_PADDLE:
       {
-        paddle_reset(i >> 2);
+        paddle_reset(i);
         break;
       }
 
       case DEVICE_SPORTSPAD:
       {
-        sportspad_reset(i >> 2);
+        sportspad_reset(i);
         break;
       }
 
diff --git a/core/input_hw/paddle.c b/core/input_hw/paddle.c
index 93f500f..2fa7093 100644
--- a/core/input_hw/paddle.c
+++ b/core/input_hw/paddle.c
@@ -45,8 +45,8 @@ static struct
 
 void paddle_reset(int index)
 {
-  input.analog[index << 2][0] = 128;
-  paddle[index].State = 0x40;
+  input.analog[index][0] = 128;
+  paddle[index>>2].State = 0x40;
 }
 
 INLINE unsigned char paddle_read(int port)
diff --git a/core/input_hw/sportspad.c b/core/input_hw/sportspad.c
index 03e176e..48154e1 100644
--- a/core/input_hw/sportspad.c
+++ b/core/input_hw/sportspad.c
@@ -46,10 +46,10 @@ static struct
 
 void sportspad_reset(int index)
 {
-  input.analog[index << 2][0] = 128;
-  input.analog[index << 2][1] = 128;
-  sportspad[index].State = 0x40;
-  sportspad[index].Counter = 0;
+  input.analog[index][0] = 128;
+  input.analog[index][1] = 128;
+  sportspad[index>>2].State = 0x40;
+  sportspad[index>>2].Counter = 0;
 }
 
 INLINE unsigned char sportspad_read(int port)
diff --git a/core/input_hw/xe_a1p.c b/core/input_hw/xe_a1p.c
index 0cb702f..8821ff9 100644
--- a/core/input_hw/xe_a1p.c
+++ b/core/input_hw/xe_a1p.c
@@ -43,39 +43,41 @@ static struct
   uint8 State;
   uint8 Counter;
   uint8 Latency;
-} xe_a1p;
+} xe_a1p[2];
 
-void xe_a1p_reset(void)
+void xe_a1p_reset(int index)
 {
-  input.analog[0][0] = 128;
-  input.analog[0][1] = 128;
-  input.analog[1][0] = 128;
-  xe_a1p.State = 0x40;
-  xe_a1p.Counter = 0;
-  xe_a1p.Latency = 0;
+  input.analog[index][0] = 128;
+  input.analog[index][1] = 128;
+  input.analog[index+1][0] = 128;
+  index >>= 2;
+  xe_a1p[index].State = 0x40;
+  xe_a1p[index].Counter = 0;
+  xe_a1p[index].Latency = 0;
 }
 
-unsigned char xe_a1p_read()
+INLINE unsigned char xe_a1p_read(int index)
 {
   unsigned int temp = 0x40;
+  unsigned int port = index << 2;
 
   /* Left Stick X & Y analog values (bidirectional) */
-  int x = input.analog[0][0];
-  int y = input.analog[0][1];
+  int x = input.analog[port][0];
+  int y = input.analog[port][1];
 
   /* Right Stick X or Y value (unidirectional) */
-  int z = input.analog[1][0];
+  int z = input.analog[port+1][0];
 
   /* Buttons status (active low) */
-  uint16 pad = ~input.pad[0];
+  uint16 pad = ~input.pad[port];
 
   /* Current internal cycle (0-7) */
-  unsigned int cycle = xe_a1p.Counter & 7;
+  unsigned int cycle = xe_a1p[index].Counter & 7;
 
   /* Current 4-bit data cycle */
   /* There are eight internal data cycle for each 5 acquisition sequence */
   /* First 4 return the same 4-bit data, next 4 return next 4-bit data */
-  switch (xe_a1p.Counter >> 2)
+  switch (xe_a1p[index].Counter >> 2)
   {
     case 0:
       temp |= ((pad >> 8) & 0x0F); /* E1 E2 Start Select */
@@ -119,42 +121,62 @@ unsigned char xe_a1p_read()
   cycle = (cycle + 1) & 7;
 
   /* Update internal cycle counter */
-  xe_a1p.Counter = (xe_a1p.Counter & ~7) | cycle;
+  xe_a1p[index].Counter = (xe_a1p[index].Counter & ~7) | cycle;
 
   /* Update internal latency on each read */
-  xe_a1p.Latency++;
+  xe_a1p[index].Latency++;
 
   return temp;
 }
 
-void xe_a1p_write(unsigned char data, unsigned char mask)
+INLINE void xe_a1p_write(int index, unsigned char data, unsigned char mask)
 {
   /* update bits set as output only */
-  data = (xe_a1p.State & ~mask) | (data & mask);
+  data = (xe_a1p[index].State & ~mask) | (data & mask);
 
   /* look for TH 1->0 transitions */
-  if (!(data & 0x40) && (xe_a1p.State & 0x40))
+  if (!(data & 0x40) && (xe_a1p[index].State & 0x40))
   {
     /* reset acquisition cycle */
-    xe_a1p.Latency = xe_a1p.Counter = 0;
+    xe_a1p[index].Latency = xe_a1p[index].Counter = 0;
   }
   else
   {
     /* some games immediately write new data to TH */
     /* so we make sure first sequence has actually been handled */
-    if (xe_a1p.Latency > 2)
+    if (xe_a1p[index].Latency > 2)
     {
       /* next acquisition sequence */
-      xe_a1p.Counter = (xe_a1p.Counter & ~7) + 8;
+      xe_a1p[index].Counter = (xe_a1p[index].Counter & ~7) + 8;
 
       /* 5 sequence max with 8 cycles each */
-      if (xe_a1p.Counter > 32)
+      if (xe_a1p[index].Counter > 32)
       {
-        xe_a1p.Counter = 32;
+        xe_a1p[index].Counter = 32;
       }
     }
   }
 
   /* update internal state */
-  xe_a1p.State = data;
+  xe_a1p[index].State = data;
+}
+
+unsigned char xe_a1p_1_read(void)
+{
+  return xe_a1p_read(0);
+}
+
+unsigned char xe_a1p_2_read(void)
+{
+  return xe_a1p_read(1);
+}
+
+void xe_a1p_1_write(unsigned char data, unsigned char mask)
+{
+  xe_a1p_write(0, data, mask);
+}
+
+void xe_a1p_2_write(unsigned char data, unsigned char mask)
+{
+  xe_a1p_write(1, data, mask);
 }
diff --git a/core/input_hw/xe_a1p.h b/core/input_hw/xe_a1p.h
index 66b0360..7c474ed 100644
--- a/core/input_hw/xe_a1p.h
+++ b/core/input_hw/xe_a1p.h
@@ -40,8 +40,10 @@
 #define _XE_A1PH_
 
 /* Function prototypes */
-extern void xe_a1p_reset(void);
-extern unsigned char xe_a1p_read(void);
-extern void xe_a1p_write(unsigned char data, unsigned char mask);
+extern void xe_a1p_reset(int index);
+extern unsigned char xe_a1p_1_read(void);
+extern unsigned char xe_a1p_2_read(void);
+extern void xe_a1p_1_write(unsigned char data, unsigned char mask);
+extern void xe_a1p_2_write(unsigned char data, unsigned char mask);
 
 #endif
diff --git a/core/io_ctrl.c b/core/io_ctrl.c
index 2b4f924..8d476ab 100644
--- a/core/io_ctrl.c
+++ b/core/io_ctrl.c
@@ -110,8 +110,8 @@ void io_init(void)
 
     case SYSTEM_XE_A1P:
     {
-      port[0].data_w = xe_a1p_write;
-      port[0].data_r = xe_a1p_read;
+      port[0].data_w = xe_a1p_1_write;
+      port[0].data_r = xe_a1p_1_read;
       break;
     }
 
@@ -181,6 +181,13 @@ void io_init(void)
       break;
     }
 
+    case SYSTEM_XE_A1P:
+    {
+      port[1].data_w = xe_a1p_2_write;
+      port[1].data_r = xe_a1p_2_read;
+      break;
+    }
+
     case SYSTEM_ACTIVATOR:
     {
       port[1].data_w = activator_2_write;
diff --git a/gx/gui/menu.c b/gx/gui/menu.c
index 5788cde..b3beba6 100644
--- a/gx/gui/menu.c
+++ b/gx/gui/menu.c
@@ -2183,12 +2183,6 @@ static void ctrlmenu(void)
             input.system[1] += 2;
           }
 
-          /* XE-1AP on port A only */
-          if (input.system[1] == SYSTEM_XE_A1P)
-          {
-            input.system[1]++;
-          }
-
           /* 4-wayplay uses both ports */
           if (input.system[1] == SYSTEM_WAYPLAY)
           {