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linux-next/drivers/usb
Sebastian Andrzej Siewior ed9cbda63d usb: gadget: remove usb_gadget_controller_number()
The bcdDevice field is defined as
|Device release number in binary-coded decimal
in the USB 2.0 specification. We use this field to distinguish the UDCs
from each other. In theory this could be used on the host side to apply
certain quirks if the "special" UDC in combination with this gadget is
used. This hasn't been done as far as I am aware. In practice it would
be better to fix the UDC driver before shipping since a later release
might not need this quirk anymore.

There are some driver in tree (on the host side) which use the bcdDevice
field to figure out special workarounds for a given firmware revision.
This seems to make sense. Therefore this patch converts all gadgets
(except a few) to use the kernel version instead a random 2 or 3 plus
the UDC number. The few that don't report kernel's version are:
- webcam
  This one reports always a version 0x10 so allow it to do so in future.
- nokia
  This one reports always 0x211. The comment says that this gadget works
  only if the UDC supports altsettings so I added a check for this.
- serial
  This one reports 0x2400 + UDC number. Since the gadget version is 2.4
  this could make sense. Therefore bcdDevice is 0x2400 here.

I also remove various gadget_is_<name> macros which are unused. The
remaining few macros should be moved to feature / bug bitfield.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
2012-09-10 16:43:24 +03:00
..
atm usb: Use eth_random_addr 2012-07-16 22:39:07 -07:00
c67x00
chipidea usb: gadget: get rid of USB_GADGET_{DUAL,SUPER}SPEED 2012-08-31 12:49:40 +03:00
class Merge 3.5-rc7 into usb-next 2012-07-16 13:16:09 -07:00
core This patch series contains a major revamp of how we collect entropy 2012-07-31 19:07:42 -07:00
dwc3 usb: gadget: get rid of USB_GADGET_{DUAL,SUPER}SPEED 2012-08-31 12:49:40 +03:00
early KGDB/KDB/usb-dbgp fixes and cleanups 2012-08-03 10:53:47 -07:00
gadget usb: gadget: remove usb_gadget_controller_number() 2012-09-10 16:43:24 +03:00
host usb/ohci-omap: remove unused variable 2012-08-08 21:13:01 +02:00
image USB: mdc800.c: remove dbg() usage 2012-05-01 21:33:50 -07:00
misc USB: yurex.c: remove dbg() usage 2012-05-01 21:34:11 -07:00
mon
musb usb: gadget: get rid of USB_GADGET_{DUAL,SUPER}SPEED 2012-08-31 12:49:40 +03:00
otg This patch series contains a major revamp of how we collect entropy 2012-07-31 19:07:42 -07:00
phy usb: phy: Fix Kconfig dependency for Phy drivers 2012-06-26 16:14:33 -07:00
renesas_usbhs usb: renesas_usbhs: modify the irq handler for sharing irq 2012-08-23 11:04:20 +03:00
serial USB: option: add ZTE MF821D 2012-07-16 17:19:19 -07:00
storage [SCSI] usb-storage: update usb devices for write cache quirk in quirk list. 2012-07-20 08:59:00 +01:00
wusbcore
Kconfig usb: move ci13xxx and related code to drivers/usb/chipidea 2012-05-11 16:45:30 -07:00
Makefile usb: phy: Fix Kconfig dependency for Phy drivers 2012-06-26 16:14:33 -07:00
README
usb-common.c
usb-skeleton.c USB: usb-skeleton.c: remove err() usage 2012-04-27 11:24:45 -07:00

To understand all the Linux-USB framework, you'll use these resources:

    * This source code.  This is necessarily an evolving work, and
      includes kerneldoc that should help you get a current overview.
      ("make pdfdocs", and then look at "usb.pdf" for host side and
      "gadget.pdf" for peripheral side.)  Also, Documentation/usb has
      more information.

    * The USB 2.0 specification (from www.usb.org), with supplements
      such as those for USB OTG and the various device classes.
      The USB specification has a good overview chapter, and USB
      peripherals conform to the widely known "Chapter 9".

    * Chip specifications for USB controllers.  Examples include
      host controllers (on PCs, servers, and more); peripheral
      controllers (in devices with Linux firmware, like printers or
      cell phones); and hard-wired peripherals like Ethernet adapters.

    * Specifications for other protocols implemented by USB peripheral
      functions.  Some are vendor-specific; others are vendor-neutral
      but just standardized outside of the www.usb.org team.

Here is a list of what each subdirectory here is, and what is contained in
them.

core/		- This is for the core USB host code, including the
		  usbfs files and the hub class driver ("khubd").

host/		- This is for USB host controller drivers.  This
		  includes UHCI, OHCI, EHCI, and others that might
		  be used with more specialized "embedded" systems.

gadget/		- This is for USB peripheral controller drivers and
		  the various gadget drivers which talk to them.


Individual USB driver directories.  A new driver should be added to the
first subdirectory in the list below that it fits into.

image/		- This is for still image drivers, like scanners or
		  digital cameras.
../input/	- This is for any driver that uses the input subsystem,
		  like keyboard, mice, touchscreens, tablets, etc.
../media/	- This is for multimedia drivers, like video cameras,
		  radios, and any other drivers that talk to the v4l
		  subsystem.
../net/		- This is for network drivers.
serial/		- This is for USB to serial drivers.
storage/	- This is for USB mass-storage drivers.
class/		- This is for all USB device drivers that do not fit
		  into any of the above categories, and work for a range
		  of USB Class specified devices. 
misc/		- This is for all USB device drivers that do not fit
		  into any of the above categories.