add usb resume support

1 files changed, 72 insertions, 10 deletions

diff --git a/app/usb.c b/app/usb.c
index 10ecd68..245de1d 100644
--- a/app/usb.c
+++ b/app/usb.c
@@ -25,18 +25,22 @@ const struct usb_interface ifaces[] = {
    },
   {
    .num_altsetting = 1,
-   .altsetting = &mouse_iface,
+   .altsetting = &consumer_iface,
    },
   {
    .num_altsetting = 1,
    .altsetting = &tablet_iface,
    },
+  {
+   .num_altsetting = 1,
+   .altsetting = &mouse_iface,
+   },
 #ifdef INCLUDE_DFU_INTERFACE
   {
    .num_altsetting = 1,
    .altsetting = &dfu_iface,
+   },
 #endif
-   }
 };
 
 const struct usb_config_descriptor config = {
@@ -44,14 +48,14 @@ const struct usb_config_descriptor config = {
   .bDescriptorType = USB_DT_CONFIGURATION,
   .wTotalLength = 0,
 #ifdef INCLUDE_DFU_INTERFACE
-  .bNumInterfaces = 4,
+  .bNumInterfaces = 5,
 #else
-  .bNumInterfaces = 3,
+  .bNumInterfaces = 4,
 #endif
   .bConfigurationValue = 1,
-  .iConfiguration = 0,
-  .bmAttributes = 0xC0,
-  .bMaxPower = 0x32,
+  .iConfiguration = 4,
+  .bmAttributes = 0xa0,
+  .bMaxPower = 0x31,
 
   .interface = ifaces,
 };
@@ -60,6 +64,12 @@ static const char *usb_strings[] = {
   "Cabbages are good for you",
   "fish",
   "soup",
+  "kvm composite",
+  "kvm keyboard",
+  "kvm consumer",
+  "kvm tablet",
+  "kvm mouse",
+  "kvm dfu device",
 };
 
 
@@ -67,6 +77,47 @@ static const char *usb_strings[] = {
 usbd_device *usbd_dev;
 
 
+int usb_is_suspended = 0;
+
+static void
+usb_suspended (void)
+{
+  *USB_CNTR_REG |= USB_CNTR_FSUSP;
+
+  usb_is_suspended = 1;
+}
+
+
+static void
+usb_resumed (void)
+{
+
+  *USB_CNTR_REG &= ~USB_CNTR_FSUSP;
+
+  usb_is_suspended = 0;
+}
+
+int
+usb_wakeup_host (void)
+{
+  if (!usb_is_suspended)
+    return 1;
+
+
+  *USB_CNTR_REG |= USB_CNTR_RESUME;
+
+  delay_us (1000);
+  delay_us (1000);
+  delay_us (1000);
+  delay_us (1000);
+  delay_us (1000);
+
+  *USB_CNTR_REG &= ~USB_CNTR_RESUME;
+
+  return 0;
+}
+
+
 static int
 usb_control_request (usbd_device * usbd_dev, struct usb_setup_data *req,
                      uint8_t ** buf, uint16_t * len,
@@ -87,11 +138,14 @@ usb_control_request (usbd_device * usbd_dev, struct usb_setup_data *req,
       keyboard_get_descriptor (buf, len);
       return 1;
     case 1:
-      mouse_get_descriptor (buf, len);
+      consumer_get_descriptor (buf, len);
       return 1;
     case 2:
       tablet_get_descriptor (buf, len);
       return 1;
+    case 3:
+      mouse_get_descriptor (buf, len);
+      return 1;
     }
 
   *len = 0;
@@ -108,6 +162,7 @@ usb_set_config (usbd_device * usbd_dev, uint16_t wValue)
   usbd_ep_setup (usbd_dev, 0x81, USB_ENDPOINT_ATTR_INTERRUPT, 4, NULL);
   usbd_ep_setup (usbd_dev, 0x82, USB_ENDPOINT_ATTR_INTERRUPT, 4, NULL);
   usbd_ep_setup (usbd_dev, 0x83, USB_ENDPOINT_ATTR_INTERRUPT, 4, NULL);
+  usbd_ep_setup (usbd_dev, 0x84, USB_ENDPOINT_ATTR_INTERRUPT, 4, NULL);
 
   usbd_register_control_callback (usbd_dev,
                                   USB_REQ_TYPE_STANDARD |
@@ -121,6 +176,8 @@ usb_set_config (usbd_device * usbd_dev, uint16_t wValue)
                                   USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT,
                                   dfu_control_request);
 #endif
+
+
 }
 
 /* Buffer to be used for control requests. */
@@ -131,16 +188,21 @@ usb_init (void)
 {
 
   usbd_dev =
-    usbd_init (&stm32f103_usb_driver, &dev, &config, usb_strings, 3,
+    usbd_init (&stm32f103_usb_driver, &dev, &config, usb_strings, 8,
                usbd_control_buffer, sizeof (usbd_control_buffer));
 
   usbd_register_set_config_callback (usbd_dev, usb_set_config);
+  usbd_register_suspend_callback (usbd_dev, usb_suspended);
+  usbd_register_resume_callback (usbd_dev, usb_resumed);
+
+  SET_REG (USB_CNTR_REG,
+           USB_CNTR_RESETM | USB_CNTR_CTRM | USB_CNTR_SUSPM | USB_CNTR_WKUPM);
 
 }
 
 void
 usb_run (void)
 {
-  while (1)
+  for (;;)
     usbd_poll (usbd_dev);
 }