linux/drivers/usb/gadget
Jonas Bonn 8f6707bf2b usb: gadget: atmel: tie wake lock to running clock
If the USB device is connected to a host, the CPU cannot be suspended or
else the USB device appears to be disconnected from the host's point of
view.  Only after a "USB suspend" state has been entered (as set by the
host) or the host is disconnected can the system safely be suspended: in
both these states, the clock is stopped.  As such, this patch associates
a "wake lock" with the running clock of the UDC to keep the system awake
as long as the host maintains the USB connection active.

Signed-off-by: Jonas Bonn <jonas@norrbonn.se>
CC: Cristian Birsan <cristian.birsan@microchip.com>
CC: Felipe Balbi <balbi@kernel.org>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CC: Nicolas Ferre <nicolas.ferre@microchip.com>
CC: Alexandre Belloni <alexandre.belloni@bootlin.com>
CC: Ludovic Desroches <ludovic.desroches@microchip.com>
CC: linux-arm-kernel@lists.infradead.org
CC: linux-usb@vger.kernel.org
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2019-05-03 09:13:49 +03:00
..
function usb: gadget: do not use __constant_cpu_to_le16 2019-05-03 09:13:48 +03:00
legacy USB: changes for v5.1 merge window 2019-02-15 09:08:57 +01:00
udc usb: gadget: atmel: tie wake lock to running clock 2019-05-03 09:13:49 +03:00
Kconfig USB: add missing SPDX lines to Kconfig and Makefiles 2019-01-22 09:08:17 +01:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
composite.c usb: gadget: Fix OS descriptors support 2018-07-17 10:12:51 +03:00
config.c USB: gadget: Remove redundant license text 2017-11-07 15:45:02 +01:00
configfs.c usb: gadget: configfs: avoid spaces for indentation 2018-07-26 13:49:49 +03:00
configfs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
epautoconf.c usb: gadget: move non-super speed code out of usb_ep_autoconfig_ss() 2019-02-07 13:14:51 +02:00
functions.c USB: add SPDX identifiers to all remaining files in drivers/usb/ 2017-11-04 11:48:02 +01:00
u_f.c usb: gadget: Change Andrzej Pietrasiewicz's e-mail address 2019-02-11 11:12:29 +02:00
u_f.h usb: gadget: Change Andrzej Pietrasiewicz's e-mail address 2019-02-11 11:12:29 +02:00
u_os_desc.h usb: gadget: Change Andrzej Pietrasiewicz's e-mail address 2019-02-11 11:12:29 +02:00
usbstring.c usb/gadget: Constify usb_gadget_get_string "table" argument 2018-05-15 10:06:49 +03:00