patch-2.3.99-pre6 linux/Documentation/usb/dc2xx.txt

• Lines: 111
• Date: Fri Apr 21 14:03:00 2000
• Orig file: v2.3.99-pre5/linux/Documentation/usb/dc2xx.txt
• Orig date: Fri Jan 21 18:19:15 2000

diff -u --recursive --new-file v2.3.99-pre5/linux/Documentation/usb/dc2xx.txt linux/Documentation/usb/dc2xx.txt
@@ -1,4 +1,4 @@
-19 January 2000
+14 April 2000
 david-b@pacbell.net
 
 This is an overview of how to use the "dc2xx" USB driver with certain
@@ -17,30 +17,22 @@
 
 In addition the DC-220, DC-260, DC-265, and DC-290 are also recognized.
 However, like other cameras using the "Digita OS" (from www.flashpoint.com)
-there is no gPhoto support for this camera.  At this writing the best
-known support for these cameras is a Python script that supports image
-downloading from those cameras.  (See archives of the linux-usb mailing
-list.)  When it becomes available, the HP PhotoSmart C500 should also
-work ... it's another Digita OS camera with USB support.
-
-It's likely that other digital still cameras can also use this USB driver,
-even if they're not from Kodak and don't use Digita.  The reason is that
-most currently known USB still camera protocols treat USB like a faster
-packet-carrying connection than a serial line, which is exactly how this
-driver looks to an application.
+there is no gPhoto support for this camera.  There is a python script
+for accessing these cameras (see archives of the linux-usb mailing list)
+and a "Digita Services" library that can also use this driver.
+
+The HP PhotoSmart C500 should also work, since it's another Digita camera
+with USB support.
 
 
 USB HARDWARE
 
-This has been shown to work on x86 OHCI and UHCI (Intel) chipsets.  OHCI has
-been trouble free; not so with UHCI, which was first seen to be happy with
-2.3.24 kernels, and has not been as fast as OHCI.  Users on the PowerMac
-platform have had success, although the stock kernel doesn't yet support
-that platform.
+Recent kernels have had no particular problems using this driver with
+either OHCI or UHCI chipsets, and have worked on the PowerMac platform.
 
 Note that in some cases changes in BIOS settings may be needed before
 your USB works.  At least one user has reported a need for SMP-related 
-settings as well.
+settings as well, and some old hardware may not handle USB correctly.
 
 
 SETUP
@@ -50,15 +42,18 @@
 
 Create at least one device, perhaps like this (both read and write):
 
-    # mknod -m 0666 /dev/kodak00 c 180 80
-    # mknod -m 0666 /dev/kodak01 c 180 81
+    # mknod -m 0660 /dev/usb/dc2xx0 c 180 80
+    # mknod -m 0660 /dev/usb/dc2xx1 c 180 81
     ...
 
+NOTE:  you would normally configure PAM so that the user logged in at
+the console is granted ownership of these devices.  console.perms(5)
+explains how to do this.
+
 The driver supports multiple device nodes.  The USB framework supports
-a maximum of sixteen device nodes (up to minor device number 96), though
-by default fewer devices are available.
+a maximum of sixteen device nodes (up to minor device number 96).
 
-When you plug in one camera, it will use the first device node (kodak00
+When you plug in one camera, it will use the first device node (dc2xx0
 in the example above).  A second camera will use the second device node,
 and so on.
 
@@ -69,18 +64,22 @@
 itself up correctly.
 
     - You should see an entry in /proc/bus/usb/drivers for "dc2xx",
-      if you enabled USB /proc support.
+      if you enabled USB /proc support and correctly mounted the
+      usbdevfs on /proc/bus/usb.
 
 Second:  when you connect your camera to the computer, does it get recognized
 by the driver?  (Make sure the camera is powered on!)
 
     - if you've got /proc/bus/usb/devices, you should see an entry
       something like this.  The "ProdID" may be different if you didn't
-      plug in a DC-240, but the "Driver=dc2xx" had better be there.
+      plug in a DC-240, as may the strings presented, but "Driver=dc2xx"
+      had better be there.
 
 	T:  Lev=01 Prnt=00 Port=00 Cnt=01 Dev#=  1 Spd=12  MxCh= 0
 	D:  Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
 	P:  Vendor=040a ProdID=0120 Rev= 1.08
+	S:  Manufacturer=Eastman Kodak Company
+	S:  Product=KODAK DC240 Zoom Digital Camera
 	C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr=100mA
 	I:  If#= 0 Alt= 0 #EPs= 2 Cls=00(>ifc ) Sub=00 Prot=00 Driver=dc2xx
 	E:  Ad=01(O) Atr=02(Bulk) MxPS=  64 Ivl=  0ms
@@ -90,13 +89,12 @@
 
 	Manufacturer: Eastman Kodak Company
 	Product: KODAK DC240 Zoom Digital Camera
-	Serial Number: ?
 	dc2xx.c: USB Camera #0 connected
 
 Third:  (optional) can you use gPhoto to talk to the camera?
 
-    - When you configure your camera, tell it to use "/dev/kodak00" (or
-      whatever name you used).  Right now, gPhoto emits a diagnostic
+    - When you configure your camera, tell it to use "/dev/usb/dc2xx0"
+      (or whatever name you used).  Right now, gPhoto emits a diagnostic
       message (non-GUI) saying that it since it didn't act like a TTY,
       it's assuming it's got a USB connection.