Some platforms don't support the wake_irq, so disable wowlan
in this case, and avoid the "Unbalanced IRQ wake disable"
warning on disable_irq_wake().
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Beacon filtering needs to be enabled so AP won't wake up by
by every received beacon.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

We set wl->wow_enabled on every suspend(), so we need to clear it
on every resume().
(we can't rely on setting wl->wow_enabled=false in suspend(),
as it being called only when wowlan triggers are configured)
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Since mac80211 calls suspend/resume only when wowlan triggers
exist, there is no need to check for triggers existance in the
callbacks as well.
Add a WARN_ON() to verify it.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

The Low Power DRPw (LPD) mode contains several optimizations
that designed to reduce power consumption. The purpose
is to save current consumption in RX and Listen mode.

LPD setting apply only for wl127x AP mode (not wl128x)
Signed-off-by: NShahar Levi <shahar_levi@ti.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

If our SDIO function has its runtime PM disabled, don't try to
manipulate its runtime PM status at all. This way we can still
power on cards plugged to mmc hosts that are not MMC_CAP_POWER_OFF_CARD.
Reported-and-tested-by: NTim Yamin <tim@kangatronix.co.uk>
Signed-off-by: NOhad Ben-Cohen <ohad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

The firmware, in practice, treats the channels in three separate
blocks, one for each band (bg, a and j).  Instead of using a single
array and doing some magic with indices, split the array in 3 to make
it more readable.
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Due to rebase error, the patch for commit cb5ae0 ("wl12xx: configure
rates when working in ibss mode") was wrong - a blob was added
into the wrong function. fix it.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

crc7 is used only in wl12xx_spi.

Remove redundant crc7.h includes, and update Kconfig to select CRC7
only if WL12XX_SPI is being selected.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Beacon early termination doesn't help much in the 5GHz band and masks
channel switch IE Beacons.  Thus, change the code to use BET only in
2.4GHz.

[Reworded the commit log slightly -- Luca.]
Signed-off-by: NShahar Levi <shahar_levi@ti.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Allow control over rx_streaming interval and operation mode
(always/only on coex) via debugfs.

e.g.
echo 100 > /debug/ieee80211/phy0/wl12xx/rx_streaming/interval
echo 1 > /debug/ieee80211/phy0/wl12xx/rx_streaming/always
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

When rx_streaming.interval is non-zero, use automatic rx streaming.
Enable rx streaming on the each rx/tx packet, and disable it
rx_streaming.duration msecs later.

When rx_streaming.always=0 (default), rx streaming is enabled only
when there is a coex operation.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

wl12xx supports the "rx streaming" feature:

When in ps mode, and @timeout msecs have been passed since
the last rx/tx, it issues trigger packets (QoS-null/PS-Poll packets,
according to the ac type) in const intervals (in order to reduce
the rx time).
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Those have little value. Remove those to
make the driver less noisy.
Signed-off-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Nops aren't needed. When we actually need
those calls, then we add them with meat
and barbecue sauce.
Signed-off-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

->init and ->reset are optional - at least
sdio.c doesn't implement them - so allow those
pointers to be NULL.
Signed-off-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Those have little value. Remove those to make
the driver less noisy.
Signed-off-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

That's only needed during init anyway, let's free
some space after we're done probing.
Signed-off-by: NFelipe Balbi <balbi@ti.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Adding new event that close RX BA session in case of periodic BT activity
limiting WLAN activity.
Signed-off-by: NShahar Levi <shahar_levi@ti.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Fix kernel oops when trying to use passive scheduled scans.  The
reason was that in passive scans there are no SSIDs, so there was a
NULL pointer dereference.

To solve the problem, we now check the number of SSIDs provided in the
sched_scan request and only access the list if there's one or more
(ie. passive scan is not forced).  We also force all the channels to
be passive by adding the IEEE80211_CHAN_PASSIVE_SCAN flag locally
before the checks in the wl1271_scan_get_sched_scan_channels()
function.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

Use a different value for DFS dwell time when performing a scheduled
scan.  Previously we were using the same value as for normal passive
scans.  This adds some flexibility between these two different types
of passive scan.

For now we use 150 TUs for DFS channel dwell time.  This may need to
be fine-tuned in the future.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

DFS channels were never getting included in the scheduled scans,
because they always contain the passive flag as well and the call was
asking for DFS and active channels.

Fix this by ignoring the passive flag when collecting DFS channels.
Also, move the DFS channels in the channel list before the 5GHz active
channels (this was implemented in the FW differently than specified).
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

We were comparing bitwise AND results with a boolean, so when the
boolean was set to true, it was not matching as it should.

Fix this by booleanizing the bitwise AND results with !!.
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

There was a compilation error when PM is not enabled:

  CC [M]  drivers/net/wireless/wl12xx/main.o
drivers/net/wireless/wl12xx/main.c:3653: error: unknown field 'suspend' specified in initializer
drivers/net/wireless/wl12xx/main.c:3653: warning: initialization from incompatible pointer type
drivers/net/wireless/wl12xx/main.c:3654: error: unknown field 'resume' specified in initializer
drivers/net/wireless/wl12xx/main.c:3654: warning: initialization from incompatible pointer type

Fix this by adding #ifdef's in the appropriate places.

Cc: Eliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When operating as station, enter psm before suspending
the device into wowlan state.

Add a new completion event to signal when psm was entered
successfully.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Since wowlan requires the ability to stay awake while the host
is suspended, declare support for NL80211_WOW_TRIGGER_ANYTHING
if the MMC_PM_KEEP_POWER capability is being supported.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

When WoW is enabled, the interface will stay up and the chip will
be powered on, so we have to flush/cancel any remaining work, and
prevent the irq handler from scheduling a new work until the system
is resumed.

Add 2 new flags:
* WL1271_FLAG_SUSPENDED - the system is (about to be) suspended.
* WL1271_FLAG_PENDING_WORK - there is a pending irq work which
   should be scheduled when the system is being resumed.

In order to wake-up the system while getting an irq, we initialize
the device as wakeup device, and calling pm_wakeup_event() upon
getting the interrupt (while the system is about to be suspended)
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

if a wow trigger was configured, set the MMC_PM_KEEP_POWER flag
on suspend, so our power will be kept while the system is suspended.

We needed to set this flag on each suspend attempt (when we want
to keep power)
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Additionally, add wow_enabled field to wl, to indicate
whether wowlan was configured.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

set the sdio interrupt as wake_up interrupt, so we will be able
to wake up the suspended system (Wake-On-Wireless)
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

This flag is not used anymore, remove it from the list.
Signed-off-by: NLuciano Coelho <coelho@ti.com>

The current firmware only supports scheduled scan in station mode and
when idle.  To prevent the firmware from crashing, return -EOPNOTSUPP
when sched_scan start is called in an invalid state.
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Add the sched_scanning value to the driver_status debugfs entry.
Signed-off-by: NLuciano Coelho <coelho@ti.com>

This patch adds the mac80211 operations for scheduled scan and the
scheduled scan results reporting.
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Add firmware command structures, definitions and code to to configure,
start and stop scheduled scans.
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Subscribe and listen to PERIODIC_SCAN_REPORT_EVENT_ID and
PERIODIC_SCAN_COMPLETE_EVENT_ID in preparation for the scheduled scan
implementation.
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Add the structures and values for driver-configured scheduled scan
parameters.
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Set the spectrum management bit in the hw flags so that mac80211 will
set the WLAN_CAPABILITY_SPECTRUM_MGMT bit in association requests
(which in practice means that we support 802.11h spectrum management).

[Reworded the commit log -- Luca.]
Signed-off-by: NShahar Levi <shahar_levi@ti.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

This patch adds a beacon filter rule to pass up the beacons that
contain changed HT information elements.  These beacons need to be
passed to mac80211 so that it can act on such changes.

[Reworded commit log -- Luca.]
Signed-off-by: NShahar Levi <shahar_levi@ti.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>

Simplify wl1271_ssid_set by re-using cfg80211_find_ie instead of
reimplementing it.

Additionally, add a length check to prevent a potential buffer overflow.
Signed-off-by: NEliad Peller <eliad@wizery.com>
Signed-off-by: NLuciano Coelho <coelho@ti.com>