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| author | Avinash Kumar <avinash.kumar@stericsson.com> | 2012-02-13 18:48:47 +0530 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@stericsson.com> | 2012-05-22 11:03:18 +0200 |
| commit | bdb74d8442ca934d2a06a35379cd5315d76c7888 (patch) | |
| tree | 46d21a83fc54ea76283759984d0c3083e937c770 /drivers/gator/gator_annotate_kernel.c | |
| parent | 8bf2cb67f4a2b543294a3cdef05bb8e84ad0bc79 (diff) | |
USB: core: OTG Supplement Revision 2.0 updates
OTG supplement revision 2.0 spec introduces Attach Detection Protocol
(ADP) for detecting peripheral connection without applying power on
VBUS. ADP is optional and is included in the OTG descriptor along with
SRP and HNP.
HNP polling is introduced for peripheral to notify its wish to become
host. Host polls (GET_STATUS on DEVICE) peripheral for host_request
and suspend the bus when peripheral returns host_request TRUE. The
spec insists the polling frequency to be in 1-2 sec range and bus
should be suspended with in 2 sec from host_request is set.
a_alt_hnp_support feature is obsolete and a_hnp_support feature is
limited to only legacy OTG B-device. The newly introduced bcdOTG
field in the OTG descriptor is used for identifying the 2.0 compliant
B-device.
ST-Ericsson ID: 401192
ST-Ericsson Linux next: NA
ST-Ericsson FOSS-OUT ID: NA
Change-Id: I01ea82656e3ea0302613562354521ed4fae5ac5e
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>
Signed-off-by: Avinash Kumar <avinash.kumar@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/48747
Reviewed-by: Praveena NADAHALLY <praveen.nadahally@stericsson.com>
Reviewed-by: QATOOLS
Reviewed-by: QABUILD
Diffstat (limited to 'drivers/gator/gator_annotate_kernel.c')
0 files changed, 0 insertions, 0 deletions