android_kernel_xiaomi_sm8350/drivers/usb
Alan Stern c074b416b9 [PATCH] USB UHCI: improved reset handling
This patch improves the strategy uhci-hcd uses for performing controller
resets and checking whether they are needed.

	The HCRESET command doesn't affect the Suspend, Resume,
	or Reset bits in the port status & control registers, so
	the driver must clear them by itself.  This means the
	code to figure out how many ports there are has to be moved
	to an earlier spot in the driver.

	The R/WC bits in the USBLEGSUP register can be set by the
	hardware even in the absence of BIOS meddling with legacy
	support features.  Hence it's not a good idea to check them
	while trying to determine whether the BIOS has altered the
	controller's state.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-27 14:43:44 -07:00
..
atm [PATCH] Speedtouch resync after lost signal. 2005-05-25 10:13:43 -07:00
class [PATCH] USB: kfree cleanup for drivers/usb/* - no need to check for NULL 2005-04-18 17:39:34 -07:00
core [PATCH] USB: turn a user mode driver error into a hard error 2005-06-27 14:43:42 -07:00
gadget [PATCH] USB: omap_udc updates (mostly cleanups) 2005-06-27 14:43:41 -07:00
host [PATCH] USB UHCI: improved reset handling 2005-06-27 14:43:44 -07:00
image [PATCH] USB: Spelling fixes for drivers/usb. 2005-05-03 23:31:52 -07:00
input [PATCH] USB: fix hid core to return proper error code from probe 2005-06-22 23:01:09 -07:00
media [PATCH] pwc-uncompress warning fix 2005-06-23 09:45:35 -07:00
misc [PATCH] Driver Core: drivers/usb/input/aiptek.c - drivers/zorro/zorro-sysfs.c: update device attribute callbacks 2005-06-20 15:15:35 -07:00
mon [PATCH] better USB_MON dependencies 2005-06-23 10:04:15 -07:00
net [PATCH] fix for kaweth broken by changes in the networking layer 2005-06-16 09:02:59 -07:00
serial [PATCH] Driver Core: drivers/usb/input/aiptek.c - drivers/zorro/zorro-sysfs.c: update device attribute callbacks 2005-06-20 15:15:35 -07:00
storage [PATCH] Cleanup patch for process freezing 2005-06-25 17:10:13 -07:00
Kconfig Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile [PATCH] USB: Add isp116x-hcd USB host controller driver 2005-06-27 14:43:42 -07:00
README Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
usb-skeleton.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -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.