From dd20a7868b291fd5fe6cfc8625f5eca733bf1b74 Mon Sep 17 00:00:00 2001
From: Vladimir 'phcoder' Serbinenko <phcoder@gmail.com>
Date: Sun, 18 Jul 2010 16:31:42 +0200
Subject: [PATCH] Rename usbserial to usbserial_ftdi

---
 term/usbserial.c => bus/usb/serial/ftdi.c | 32 ++++++++++++++++++++---
 bus/usb/usb.c                             |  3 ++-
 conf/i386-pc.rmk                          |  8 +++---
 3 files changed, 34 insertions(+), 9 deletions(-)
 rename term/usbserial.c => bus/usb/serial/ftdi.c (90%)

diff --git a/term/usbserial.c b/bus/usb/serial/ftdi.c
similarity index 90%
rename from term/usbserial.c
rename to bus/usb/serial/ftdi.c
index b27df8ae2..c7a7554ee 100644
--- a/term/usbserial.c
+++ b/bus/usb/serial/ftdi.c
@@ -172,13 +172,22 @@ static struct grub_serial_driver grub_usbserial_driver =
     .put = usbserial_hw_put
   };
 
+static const struct 
+{
+  grub_uint16_t vendor, product;
+} products[] =
+  {
+    {0x0403, 0x6001} /* QEMU virtual USBserial.  */
+  };
+
 static int
-grub_usbserial_attach (grub_usb_device_t usbdev, int configno, int interfno)
+grub_ftdi_attach (grub_usb_device_t usbdev, int configno, int interfno)
 {
   static struct grub_serial_port *port;
   int j;
-  struct grub_usb_desc_if *interf
-    = usbdev->config[configno].interf[interfno].descif;
+  struct grub_usb_desc_if *interf;
+
+  interf = usbdev->config[configno].interf[interfno].descif;
 
   port = grub_malloc (sizeof (*port));
   if (!port)
@@ -226,13 +235,28 @@ grub_usbserial_attach (grub_usb_device_t usbdev, int configno, int interfno)
   return 1;
 }
 
+static int
+grub_usbserial_attach (grub_usb_device_t usbdev, int configno, int interfno)
+{
+  unsigned j;
+
+  for (j = 0; j < ARRAY_SIZE (products); j++)
+    if (usbdev->descdev.vendorid == products[j].vendor
+	&& usbdev->descdev.prodid == products[j].product)
+      break;
+  if (j == ARRAY_SIZE (products))
+    return 0;
+
+  return grub_ftdi_attach (usbdev, configno, interfno);
+}
+
 struct grub_usb_attach_desc attach_hook =
 {
   .class = 0xff,
   .hook = grub_usbserial_attach
 };
 
-GRUB_MOD_INIT(usbserial)
+GRUB_MOD_INIT(usbserial_ftdi)
 {
   grub_usb_register_attach_hook_class (&attach_hook);
 }
diff --git a/bus/usb/usb.c b/bus/usb/usb.c
index ba052e5ee..b49caacdb 100644
--- a/bus/usb/usb.c
+++ b/bus/usb/usb.c
@@ -270,7 +270,8 @@ void grub_usb_device_attach (grub_usb_device_t dev)
 	  grub_dl_load ("usb_keyboard");
 	  break;
 	case 0xff:
-	  grub_dl_load ("usbserial");
+	  /* FIXME: don't load useless modules.  */
+	  grub_dl_load ("usbserial_ftdi");
 	  break;
 	}
     }
diff --git a/conf/i386-pc.rmk b/conf/i386-pc.rmk
index e1cfe1468..2e95133f3 100644
--- a/conf/i386-pc.rmk
+++ b/conf/i386-pc.rmk
@@ -196,10 +196,10 @@ usb_mod_CFLAGS = $(COMMON_CFLAGS)
 usb_mod_LDFLAGS = $(COMMON_LDFLAGS)
 
 # For serial.mod.
-pkglib_MODULES += usbserial.mod
-usbserial_mod_SOURCES = term/usbserial.c
-usbserial_mod_CFLAGS = $(COMMON_CFLAGS)
-usbserial_mod_LDFLAGS = $(COMMON_LDFLAGS)
+pkglib_MODULES += usbserial_ftdi.mod
+usbserial_ftdi_mod_SOURCES = bus/usb/serial/ftdi.c
+usbserial_ftdi_mod_CFLAGS = $(COMMON_CFLAGS)
+usbserial_ftdi_mod_LDFLAGS = $(COMMON_LDFLAGS)
 
 # For usbtest.mod
 usbtest_mod_SOURCES = commands/usbtest.c