Move contents of usb_descriptors.h to <libmaple/usb.h>.

These form and name of structs etc. is basically determined by the USB
spec and the libmaple style guide, so there's little reason for them
to change, and less reason for them to stay hidden.

Signed-off-by: Marti Bolivar <mbolivar@leaflabs.com>

1 files changed, 94 insertions, 1 deletions

diff --git a/libmaple/include/libmaple/usb.h b/libmaple/include/libmaple/usb.h
index 8555aca..d464422 100644
--- a/libmaple/include/libmaple/usb.h
+++ b/libmaple/include/libmaple/usb.h
@@ -1,7 +1,7 @@
 /******************************************************************************
  * The MIT License
  *
- * Copyright (c) 2010, 2011 LeafLabs LLC.
+ * Copyright (c) 2010, 2011, 2012 LeafLabs LLC.
  *
  * Permission is hereby granted, free of charge, to any person
  * obtaining a copy of this software and associated documentation
@@ -38,6 +38,99 @@ extern "C" {
 #include <libmaple/libmaple_types.h>
 #include <libmaple/rcc.h>
 
+/*
+ * Descriptors and other paraphernalia
+ */
+
+/* Descriptor types */
+
+#define USB_DESCRIPTOR_TYPE_DEVICE        0x01
+#define USB_DESCRIPTOR_TYPE_CONFIGURATION 0x02
+#define USB_DESCRIPTOR_TYPE_STRING        0x03
+#define USB_DESCRIPTOR_TYPE_INTERFACE     0x04
+#define USB_DESCRIPTOR_TYPE_ENDPOINT      0x05
+
+/* Descriptor structs and declaration helpers */
+
+#define USB_DESCRIPTOR_STRING_LEN(x) (2 + (x << 1))
+
+#define USB_DESCRIPTOR_STRING(len)              \
+  struct {                                      \
+      uint8 bLength;                            \
+      uint8 bDescriptorType;                    \
+      uint16 bString[len];                      \
+  } __packed
+
+typedef struct usb_descriptor_device {
+    uint8  bLength;
+    uint8  bDescriptorType;
+    uint16 bcdUSB;
+    uint8  bDeviceClass;
+    uint8  bDeviceSubClass;
+    uint8  bDeviceProtocol;
+    uint8  bMaxPacketSize0;
+    uint16 idVendor;
+    uint16 idProduct;
+    uint16 bcdDevice;
+    uint8  iManufacturer;
+    uint8  iProduct;
+    uint8  iSerialNumber;
+    uint8  bNumConfigurations;
+} __packed usb_descriptor_device;
+
+typedef struct usb_descriptor_config_header {
+    uint8  bLength;
+    uint8  bDescriptorType;
+    uint16 wTotalLength;
+    uint8  bNumInterfaces;
+    uint8  bConfigurationValue;
+    uint8  iConfiguration;
+    uint8  bmAttributes;
+    uint8  bMaxPower;
+} __packed usb_descriptor_config_header;
+
+typedef struct usb_descriptor_interface {
+    uint8 bLength;
+    uint8 bDescriptorType;
+    uint8 bInterfaceNumber;
+    uint8 bAlternateSetting;
+    uint8 bNumEndpoints;
+    uint8 bInterfaceClass;
+    uint8 bInterfaceSubClass;
+    uint8 bInterfaceProtocol;
+    uint8 iInterface;
+} __packed usb_descriptor_interface;
+
+typedef struct usb_descriptor_endpoint {
+    uint8  bLength;
+    uint8  bDescriptorType;
+    uint8  bEndpointAddress;
+    uint8  bmAttributes;
+    uint16 wMaxPacketSize;
+    uint8  bInterval;
+} __packed usb_descriptor_endpoint;
+
+typedef struct usb_descriptor_string {
+    uint8  bLength;
+    uint8  bDescriptorType;
+    uint16 bString[];
+} usb_descriptor_string;
+
+/* Common values that go inside descriptors */
+
+#define USB_CONFIG_ATTR_BUSPOWERED        0b10000000
+#define USB_CONFIG_ATTR_SELF_POWERED      0b11000000
+
+#define USB_EP_TYPE_INTERRUPT             0x03
+#define USB_EP_TYPE_BULK                  0x02
+
+#define USB_DESCRIPTOR_ENDPOINT_IN        0x80
+#define USB_DESCRIPTOR_ENDPOINT_OUT       0x00
+
+/*
+ * USB module core
+ */
+
 #ifndef USB_ISR_MSK
 /* Handle CTRM, WKUPM, SUSPM, ERRM, SOFM, ESOFM, RESETM */
 #define USB_ISR_MSK 0xBF00