linux_dsm_epyc7002/drivers/usb
Lan Tianyu f7ac7787ad usb/acpi: Use ACPI methods to power off ports.
Upcoming Intel systems will have an ACPI method to control whether a USB
port can be completely powered off.  The implication of powering off a
USB port is that the device and host sees a physical disconnect, and
subsequent port connections and remote wakeups will be lost.

Add a new function, usb_acpi_power_manageable(), that can be used to
find whether the usb port has ACPI power resources that can be used to
power on and off the port on these machines. Also add a new function
called usb_acpi_set_power_state() that controls the port power via these
ACPI methods.

When the USB core calls into the xHCI hub driver to power off a port,
check whether the port can be completely powered off via this new ACPI
mechanism.  If so, call into these new ACPI methods.  Also use the ACPI
methods when the USB core asks to power on a port.

Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-09-10 13:04:01 -07:00
..
atm USB: atm: ueagle-atm: Declare MODULE_FIRMWARE usage 2012-08-15 15:17:40 -07:00
c67x00 usb: convert drivers/usb/* to use module_platform_driver() 2011-11-28 06:48:32 +09:00
chipidea usb: chipidea: fix and improve dependencies if usb host or gadget support is built as module 2012-08-10 11:46:04 -07:00
class usb: cdc-acm: remove duplicated include from cdc-acm.c 2012-09-05 16:52:09 -07:00
core usb/acpi: Use ACPI methods to power off ports. 2012-09-10 13:04:01 -07:00
dwc3 usb: dwc3: patches for v3.6 merge window 2012-07-05 15:15:38 -07:00
early KGDB/KDB/usb-dbgp fixes and cleanups 2012-08-03 10:53:47 -07:00
gadget drivers/usb/gadget/lpc32xx_udc.c: adjust inconsistent IS_ERR and PTR_ERR 2012-09-05 16:52:09 -07:00
host usb/acpi: Use ACPI methods to power off ports. 2012-09-10 13:04:01 -07:00
image USB: mdc800.c: remove dbg() usage 2012-05-01 21:33:50 -07:00
misc Merge v3.6-rc3 into usb-next 2012-08-27 07:15:30 -07:00
mon usb: Add export.h for EXPORT_SYMBOL/THIS_MODULE where needed 2011-10-31 19:31:25 -04:00
musb usb: musb: reorder runtime pm call 2012-08-03 09:30:44 +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: isp1301: Remove unused static array and define 2012-09-05 16:52:08 -07:00
renesas_usbhs usb: renesas_usbhs: fixup DMA transport data alignment 2012-09-05 16:52:08 -07:00
serial USB: cp210x: remove useless set memory to zero use memset() 2012-09-05 16:58:30 -07:00
storage usb: remove libusual 2012-09-05 17:21:36 -07:00
wusbcore drivers/usb/wusbcore/wa-hc.c: fix error return code 2012-08-15 15:17:40 -07:00
Kconfig USB: PLAT_ORION fulfils USB_ARCH_HAS_EHCI 2012-09-07 08:54:38 -07:00
Makefile usb: phy: Fix Kconfig dependency for Phy drivers 2012-06-26 16:14:33 -07:00
README
usb-common.c usb: Provide usb_speed_string() function 2011-09-18 01:29:04 -07:00
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.