Start work on DualShock 3 driver

== DETAILS

The WiiU GC adapter is working!

Next up: DualShock 3

I have the skeleton of the driver started, need to work out the
activation packet.

== TESTING

The DS3 driver is broke as hell right now.

input/common/hid/device_ds3.c

@@ -16,38 +16,124 @@
 
 #include "hid_device_driver.h"
 
-struct ds3_instance {
-  hid_driver_t *driver;
-  void *handle;
+#define DS3_ACTIVATION_REPORT_ID 0xf4
+#define DS3_RUMBLE_REPORT_ID     0x01
+
+typedef struct ds3_instance {
+   void *handle;
+   joypad_connection_t *pad;
+} ds3_instance_t;
+
+static uint8_t activation_packet[] = {
+  0x42, 0x0c, 0x00, 0x00
 };
 
+extern pad_connection_interface_t ds3_pad_connection;
+
 static void *ds3_init(void *handle)
 {
-  return NULL;
+   ds3_instance_t *instance;
+
+   instance = (ds3_instance_t *)calloc(1, sizeof(ds3_instance_t));
+   if(!instance)
+     goto error;
+
+   instance->handle = handle;
+
+/* TODO: do whatever is needed so that the read loop doesn't bomb out */
+
+   instance->pad = hid_pad_register(instance, &ds3_pad_connection);
+   if(!instance->pad)
+      goto error;
+
+   return instance;
+
+   error:
+      if(instance)
+         free(instance);
+      return NULL;
 }
 
 static void ds3_free(void *data)
 {
-  struct ds3_instance *instance = (struct ds3_instance *)data;
-  if(!instance)
-    return;
+   ds3_instance_t *instance = (ds3_instance_t *)data;
 
-  free(instance);
+   if(instance)
+      free(instance);
 }
 
 static void ds3_handle_packet(void *data, uint8_t *buffer, size_t size)
 {
+   ds3_instance_t *instance = (ds3_instance_t *)data;
 }
 
 static bool ds3_detect(uint16_t vendor_id, uint16_t product_id)
 {
-  return vendor_id == VID_SONY && product_id == PID_SONY_DS3;
+   return vendor_id == VID_SONY && product_id == PID_SONY_DS3;
 }
 
 hid_device_t ds3_hid_device = {
-  ds3_init,
-  ds3_free,
-  ds3_handle_packet,
-  ds3_detect,
-  "Sony DualShock 3"
+   ds3_init,
+   ds3_free,
+   ds3_handle_packet,
+   ds3_detect,
+   "Sony DualShock 3"
+};
+
+/**
+ * pad interface implementation
+ */
+
+static void *ds3_pad_init(void *data, uint32_t slot, hid_driver_t *driver)
+{
+   return data;
+}
+
+static void ds3_pad_deinit(void *data)
+{
+   ds3_instance_t *pad = (ds3_instance_t *)data;
+}
+
+static void ds3_get_buttons(void *data, retro_bits_t *state)
+{
+   ds3_instance_t *pad = (ds3_instance_t *)data;
+}
+
+static void ds3_packet_handler(void *data, uint8_t *packet, uint16_t size)
+{
+   ds3_instance_t *pad = (ds3_instance_t *)data;
+}
+
+static void ds3_set_rumble(void *data, enum retro_rumble_effect effect, uint16_t strength)
+{
+   ds3_instance_t *pad = (ds3_instance_t *)data;
+}
+
+static int16_t ds3_get_axis(void *data, unsigned axis)
+{
+   ds3_instance_t *pad = (ds3_instance_t *)data;
+   return 0;
+}
+
+static const char *ds3_get_name(void *data)
+{
+   ds3_instance_t *pad = (ds3_instance_t *)data;
+   return "Sony DualShock 3";
+}
+
+static bool ds3_button(void *data, uint16_t joykey)
+{
+   ds3_instance_t *pad = (ds3_instance_t *)data;
+   return false;
+}
+
+pad_connection_interface_t ds3_pad_connection = {
+   ds3_pad_init,
+   ds3_pad_deinit,
+   ds3_packet_handler,
+   ds3_set_rumble,
+   ds3_get_buttons,
+   ds3_get_axis,
+   ds3_get_name,
+   ds3_button
 };

input/common/hid/device_wiiu_gca.c

@@ -44,7 +44,6 @@ typedef struct gca_pad_data
 
 
 static void update_pad_state(wiiu_gca_instance_t *instance);
-static joypad_connection_t *register_pad(wiiu_gca_instance_t *instance, int port);
 static void unregister_pad(wiiu_gca_instance_t *instance, int port);
 
 extern pad_connection_interface_t wiiu_gca_pad_connection;
@@ -131,7 +130,7 @@ static void update_pad_state(wiiu_gca_instance_t *instance)
             if(pad == NULL)
             {
                RARCH_LOG("[gca]: Gamepad at port %d connected.\n", port+1);
-               instance->pads[port] = register_pad(instance, port);
+               instance->pads[port] = hid_pad_register(instance, &wiiu_gca_pad_connection);
                pad = instance->pads[port];
                if(pad == NULL)
                {
@@ -146,6 +145,7 @@ static void update_pad_state(wiiu_gca_instance_t *instance)
    }
 }
 
+/*
 static joypad_connection_t *register_pad(wiiu_gca_instance_t *instance, int port) {
    int slot;
    joypad_connection_t *result;
@@ -171,6 +171,7 @@ static joypad_connection_t *register_pad(wiiu_gca_instance_t *instance, int port
 
    return result;
 }
+*/
 
 static void unregister_pad(wiiu_gca_instance_t *instance, int slot)
 {

input/common/hid/hid_device_driver.c

@@ -36,12 +36,25 @@ hid_device_t *hid_device_driver_lookup(uint16_t vendor_id, uint16_t product_id)
   return NULL;
 }
 
-void hid_pad_connect(hid_driver_instance_t *instance, int pad)
+joypad_connection_t *hid_pad_register(void *pad_handle, pad_connection_interface_t *iface)
 {
-   if(!instance || !instance->pad_driver)
-      return;
+   int slot;
+   joypad_connection_t *result;
 
-   input_pad_connect(pad, instance->pad_driver);
+   if(!pad_handle)
+      return NULL;
+
+   slot = pad_connection_find_vacant_pad(hid_instance.pad_list);
+   if(slot < 0)
+      return NULL;
+
+   result = &(hid_instance.pad_list[slot]);
+   result->iface = iface;
+   result->data = iface->init(pad_handle, slot, hid_instance.os_driver);
+   result->connected = true;
+   input_pad_connect(slot, hid_instance.pad_driver);
+
+   return result;
 }
 
 /**

input/common/hid/hid_device_driver.h

@@ -36,8 +36,7 @@ extern hid_device_t ds4_hid_device;
 extern hid_driver_instance_t hid_instance;
 
 hid_device_t *hid_device_driver_lookup(uint16_t vendor_id, uint16_t product_id);
-
-void hid_pad_connect(hid_driver_instance_t *instance, int pad);
+joypad_connection_t *hid_pad_register(void *pad_handle, pad_connection_interface_t *iface);
 bool hid_init(hid_driver_instance_t *instance, hid_driver_t *hid_driver, input_device_driver_t *pad_driver, unsigned slots);
 void hid_deinit(hid_driver_instance_t *instance);