msm: cpufreq: Ensure cpufreq change happens on corresponding CPU

Checking the cpus_allowed mask of the current thread before changing the
frequency doesn't guarantee that the rest of the execution will continue on
the same CPU. The only way to guarantee this is to schedule a work on the
specific CPU and also prevent hotplug  of that CPU (already done by
existing code).

Change-Id: I51a02fcc777a47d3c16f2d83c47e96f2c59f7ae6
Signed-off-by: Saravana Kannan <skannan@codeaurora.org>
msm: cpufreq: Add support for CPU clocks and msm-cpufreq device

Add support for using clock APIs to do CPU/L2 frequency scaling. When clock
APIs are used to control CPU/L2 frequencies, the cpufreq driver must handle
the CPU -> L2 -> DDR bandwidth voting. Use a msm-cpufreq device to provide
the per SoC list of CPU frequencies and their L2/DDR bandwidth mapping
information.

If CPU/L2 clocks are not available, fallback to using acpuclock APIs. We
eventually want to remove the use of non-standard acpuclock APIs.

Change-Id: I2c4e2c3967d73e8cdbd9833f3cb36f3d75e27b4a
Signed-off-by: Saravana Kannan <skannan@codeaurora.org>
msm: cpufreq: Update frequency index

A deprecated api can be used to limit the minimum and maximum cpu speeds.
Another driver temporarily needs to switch back to this api, instead of
using the new version. Make this api functional again by ensuring a stale
value is updated properly.

Change-Id: Ia63772e43ec534cf2bb58e7627a87315dae5d891
Signed-off-by: Patrick Daly <pdaly@codeaurora.org>
msm: acpuclock-krait: Enable HFPLL for init only if switching to it

The existing code left the HFPLL enabled in hfpll_init(), even if
the CPU was detected to be at a non-HFPLL rate. Correct this for
power savings between when hfpll_init() and the first runtime CPU
frequency switch happen. This also ensure votes for HFPLL
regulators are not left unnecessarily asserted.

Change-Id: Iaca5dc7e4769bdbd494d669726ba9b500256f793
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
msm: SSR: Remove useless warning

This is a warning so that developers know to add more restart
order lists to SSR when a new chip is added. This is mostly
irrelevant now because we assume either entire SoC restart on SSR
or independent restart on SSR, not group restarts. Remove this
warning as it is mostly a reminder that nobody is listening for.

Change-Id: Icbf955cb18395d8d5d086b2167c5c329588b9256
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
msm_fb: display: no native frame buffer memory operations

Since we don't use pan_display, the native frame buffer memory is not
necessary any more. This is driver change, mainly disabling memory
operations that are associated with native frame buffers.

CRs-fixed: 458938
Change-Id: If33bff32ee1d9228ff8a74ca09961a0f10f1fcdd
Signed-off-by: Huaibin Yang <huaibiny@codeaurora.org>
qseecom: Fix issue with incomplete command exiting prematurely

A process waiting on a signal can be awaken by any signal. We
need to only continue processing when the condition of the
wait event is met.

Change-Id: Ib2102babbb505876f89b04399729e6ff5a475605
Signed-off-by: Mona Hossain <mhossain@codeaurora.org>
Signed-off-by: Praveen Chavan <pchavan@codeaurora.org>
qseecom: Fix issue with incomplete command exiting prematurely

A process waiting on a signal can be awaken by any signal. We
need to only continue processing when the condition of the
wait event is met.

Change-Id: Ib2102babbb505876f89b04399729e6ff5a475605
Signed-off-by: Mona Hossain <mhossain@codeaurora.org>
Signed-off-by: Praveen Chavan <pchavan@codeaurora.org>
cfg80211: allow advertising VHT capabilities

Allow drivers to advertise their VHT capabilities
and export them to userspace via nl80211.

Change-Id: I2d2825a09dfddccca1bd3edacd7fc382d765bea5
CRs-fixed: 452921

Signed-off-by: Mahesh Palivela <maheshp@posedge.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
{nl,cfg}80211: Peer STA VHT caps

To save STAs VHT caps in AP mode

Change-Id: I1930ec05a3e079733c00837c93bda615289fceda
CRs-fixed: 452921

Signed-off-by: Mahesh Palivela <maheshp@posedge.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
cfg80211: Pass station (extended) capability info to kernel

The information of the peer's capabilities and extended capabilities are
required for the driver to perform TDLS Peer UAPSD operations and off
channel operations. This information of the peer is passed from user space
using NL80211_CMD_SET_STATION command. This commit enhances
the function nl80211_set_station to pass the capability information of
the peer to the driver.

Similarly, there may be need for capability information for other modes,
so allow this to be provided with both add_station and change_station.

Change-Id: I1e626512a0f849ae05bbbd24c4e262d303b8f8ea
CRs-fixed: 452921

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
cfg80211: Pass TDLS peer's QoS/HT/VHT information during set_station

The information of the peer's capabilities is required for the driver
to perform TDLS Peer UAPSD operations. This information of the peer is
passed by the supplicant using NL80211_CMD_SET_STATION command. This
commit enhances the function nl80211_set_station to pass this
information of the peer to the driver in case this command is used
with the TDLS peer STA.

In addition, make the HT/VHT capability configuration handled more
consistently for other STA cases (reject both instead of just HT).

Change-Id: I08635df14f49711b04dfdad0daf8f874a340b5b7
CRs-fixed: 452921

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
cfg80211: fix station change if TDLS isn't supported

Larry noticed (and bisected) that commit df881293c6ba9a12868491a717b25
"cfg80211: Pass TDLS peer's QoS/HT/VHT information during set_station"
broke secure connections. This is is the case only for drivers that
don't support TDLS, where any kind of change, even just the change of
authorized flag that is required for normal operation, was rejected
now. To fix this, remove the checks. I have some patches that will add
proper verification for all the different cases later.

Change-Id: Ieaf0f8a8ab922d42bccdb4957c55b8c3d9463a3f
CRs-fixed: 452921

Cc: Jouni Malinen <j@w1.fi>
Bisected-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
cfg80211: enable TDLS on P2P client interfaces

There's no reason TDLS should be prevented on P2P client
interfaces, and most of the code already handles it, so
allow adding stations for it.

CRs-fixed: 458139
Change-Id: Id5bdde87aa6988731c91176cb5d54ffde975577c

Reported-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
cfg80211: Extend support for IEEE 802.11r Fast BSS Transition

Add NL80211_CMD_UPDATE_FT_IES to support update of FT IEs to the
WLAN driver and NL80211_CMD_FT_EVENT to send FT events from the
WLAN driver. This will carry the target AP's MAC address along
cfg80211: Extend support for IEEE 802.11r Fast BSS Transition

Add NL80211_CMD_UPDATE_FT_IES to support update of FT IEs to the
WLAN driver and NL80211_CMD_FT_EVENT to send FT events from the
WLAN driver. This will carry the target AP's MAC address along
with the relevant Information Elements. This event is used to
report received FT IEs (MDIE, FTIE, RSN IE, TIE, RICIE). These
changes allow FT to be supported with drivers that use an internal
SME instead of user space option (like FT implementation in
wpa_supplicant with mac80211-based drivers).

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Git-commit: 355199e02b831fd4f652c34d6c7673d973da1369
Git-repo: http://git.kernel.org/cgit/linux/kernel/git/linville/
wireless-testing.git/
Change-Id: I439155b3d7bf4df9c45087a4deb6ec0cd7577225
CRs-fixed: 434525
[duttus@codeaurora.org: backport to 3.4-This commit includes the
changes from following commits to compile for jb_2.5.
5314526b1743e8e8614293db7d86e480b4fe9824 : cfg80211: add channel
switch notify event
98104fdeda63d57631c9f89e90a7b83b58fcee40 : cfg80211: add P2P
Device abstraction
f4e583c8935c6f52f9385ee7cfbea8f65c66a737 : nl/cfg80211: add the
NL80211_CMD_SET_MCAST_RATE command
ed44a951c72ab409f932b1c15914488308e86da2 : cfg80211/nl80211: Notify
connection request failure in AP mode
77765eaf5cfb6b8dd98ec8b54b411d74ff6095f1 : cfg80211/nl80211: add
API for MAC address ACLs.
04f39047af2a6df64b763ea5a271db24879d0391 : nl80211/cfg80211: add
radar detection command/event.
3713b4e364effef4b170c97d54528b1cdb16aa6b : nl80211: allow splitting
wiphy information in dumps.
ee2aca343c9aa64d277a75a5df043299dc84cfd9 : cfg80211: add ability
to override VHT capabilities.
355199e02b831fd4f652c34d6c7673d973da1369 : cfg80211: Extend
support for IEEE 802.11r Fast BSS Transition.]
Signed-off-by: Sunil Dutt <duttus@codeaurora.org>
cfg80211/nl80211: add API for MAC address ACLs

Add API to enable drivers to implement MAC address based
access control in AP/P2P GO mode. Capable drivers advertise
this capability by setting the maximum number of MAC
addresses in such a list in wiphy->max_acl_mac_addrs.

An initial ACL may be given to the NL80211_CMD_START_AP
command and/or changed later with NL80211_CMD_SET_MAC_ACL.

Black- and whitelists are supported, but not simultaneously.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
[rewrite commit log, many cleanups]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Git-commit: 77765eaf5cfb6b8dd98ec8b54b411d74ff6095f1
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
CRs-fixed: 487410
Change-Id: I9593b887941be5efa5e96546ad92cd6c6bf8fb87
[duttus@codeaurora.org: resolved 3.4 backport issues]
Signed-off-by: Sunil Dutt <duttus@codeaurora.org>
cfg80211: Allow TDLS peer AID to be configured for VHT

VHT uses peer AID in the PARTIAL_AID field in TDLS frames. The
current design for TDLS is to first add a dummy STA entry before
completing TDLS Setup and then update information on this STA
entry based on what was received from the peer during the setup
exchange.

In theory, this could use NL80211_ATTR_STA_AID to set
the peer AID just like this is used in AP mode to set the AID
of an association station. However, existing cfg80211 validation
rules prevent this attribute from being used with set_station
operation. To avoid interoperability issues between different
kernel and user space version combinations, introduce a new
nl80211 attribute for the purpose of setting TDLS peer AID.
This attribute can be used in both the new_station and set_station
operations. It is not supposed to be allowed to change the AID
value during the lifetime of the STA entry, but that validation
is left for drivers to do in the change_station callback.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Git-commit: 5e4b6f5698421d94226cc2f80eae6d613c9acef8
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
Change-Id: I1d2f6d2f5a291f91858b45ad004de66a0080f1d2
CRs-fixed: 483290
[duttus@codeaurora.org: backport to 3.4-This commit includes the
changes from following commits in include/linux/nl80211.h to compile
for msm-3.4.
5de17984898c5758fc6ebe08eccea9f4b6548914 :
cfg80211: introduce critical protocol indication from user-space.]
Signed-off-by: Sunil Dutt <duttus@codeaurora.org>
cfg80211: fix VHT TDLS peer AID verification

I (Johannes) accidentally applied the first version of the patch
("Allow TDLS peer AID to be configured for VHT"). Now apply just
the changes between v1 and v2 to get the AID verification and
prefer the new attribute over the old one.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Git-commit: 3d124ea27ae2fc895f81725f0b4c7f3d9c733df4
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-testing.git
Change-Id: I72b465fff381f7c3f6faa3731a5c43375887077c
CRs-fixed: 483290
Signed-off-by: Sunil Dutt <duttus@codeaurora.org>
wireless: add VHT (802.11ac) definitions

Add the VHT definitions to be used by drivers supporting it.

Change-Id: Ia301cf72940cef19767f4f485a09c9afc12ae514
CRs-fixed: 452921

Signed-off-by: Mahesh Palivela <maheshp@posedge.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
mac80211: include VHT capability IE in probe requests

Insert the VHT capability IE into probe requests.

Change-Id: I75620090969b46701f1c760baf9c6559a4a1ac2c
CRs-fixed: 452921

Signed-off-by: Mahesh Palivela <maheshp@posedge.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>