Prefer the direct use of octal for permissions.
Done with checkpatch -f --types=SYMBOLIC_PERMS --fix-inplace
and some typing.
Miscellanea:
o Whitespace neatening around these conversions.
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.
An spatch similar to the one for skb_put_zero() converts many
of the places using it:
@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
|
-memcpy(p, data, len);
)
@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
|
-memcpy(p, data, sizeof(*p));
)
@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);
(again, manually post-processed to retain some comments)
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Driver code never touches "rstn" signal in atomic context, so there's
no need to implicitly put such restriction on it by using gpio_set_value
to manipulate it. Replace gpio_set_value to gpio_set_value_cansleep to
fix that.
As a an example of where such restriction might be inconvenient,
consider a hardware design where "rstn" is connected to a pin of I2C/SPI
GPIO expander chip.
Cc: Chris Healy <cphealy@gmail.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
ktime_set(S,N) was required for the timespec storage type and is still
useful for situations where a Seconds and Nanoseconds part of a time value
needs to be converted. For anything where the Seconds argument is 0, this
is pointless and can be replaced with a simple assignment.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
This patch changes the rssi base value to -94 for at86rf33 transceivers.
The code before assumes a rssi base value of -91 which is for the
at86rf231 transceiver only. This change need to update the cca ed
threshold mapping table.
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Acked-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Stefan Schmidt <stefan@osg.samsung.com>
I expierenced when setting channel while sleep mode it didn't changed
the channel inside the hardware registers. Then I got another report of
an user which has similar issues.
I increased the sleep to off state change timing, which is according
at86rf233 at maximum 1000 us. After this change I got no similar effects
again.
I tried another option to wait on AWAKE_END irq, which can be used to
wait until the transceiver is awaked. I tested it and the IRQ took 4
seconds after starting state change. I don't believe it takes 4 seconds
to go into the TRX_OFF state from SLEEP state. The alternative is to
increase the timings which seems to work.
Cc: Oleg Hahm <oliver.hahm@inria.fr>
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Reviewed-by: Stefan Schmidt<stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch force always to set "is_tx_from_off", when calibration
timeout was not occurred. In case of error handling the is_tx_from_off
can be inside in an invalid state.
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The resource "ctx" can be still used by at86rf230_async_state_change, we
need to free it at the complete handler of the async state change to
avoid a use after free.
Signed-off-by: Alexander Aring <aar@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Quite a lot of activity in SPI this cycle, almost all of it in drivers
with a few minor improvements and tweaks in the core.
- Updates to pxa2xx to support Intel Broxton and multiple chip selects.
- Support for big endian in the bcm63xx driver.
- Multiple slave support for the mt8173
- New driver for the auxiliary SPI controller in bcm2835 SoCs.
- Support for Layerscale SoCs in the Freescale DSPI driver.
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Merge tag 'spi-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"Quite a lot of activity in SPI this cycle, almost all of it in drivers
with a few minor improvements and tweaks in the core.
- Updates to pxa2xx to support Intel Broxton and multiple chip selects.
- Support for big endian in the bcm63xx driver.
- Multiple slave support for the mt8173
- New driver for the auxiliary SPI controller in bcm2835 SoCs.
- Support for Layerscale SoCs in the Freescale DSPI driver"
* tag 'spi-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (87 commits)
spi: pxa2xx: Rework self-initiated platform data creation for non-ACPI
spi: pxa2xx: Add support for Intel Broxton
spi: pxa2xx: Detect number of enabled Intel LPSS SPI chip select signals
spi: pxa2xx: Add output control for multiple Intel LPSS chip selects
spi: pxa2xx: Use LPSS prefix for defines that are Intel LPSS specific
spi: Add DSPI support for layerscape family
spi: ti-qspi: improve ->remove() callback
spi/spi-xilinx: Fix race condition on last word read
spi: Drop owner assignment from spi_drivers
spi: Add THIS_MODULE to spi_driver in SPI core
spi: Setup the master controller driver before setting the chipselect
spi: dw: replace magic constant by DW_SPI_DR
spi: mediatek: mt8173 spi multiple devices support
spi: mediatek: handle controller_data in mtk_spi_setup
spi: mediatek: remove mtk_spi_config
spi: mediatek: Update document devicetree bindings to support multiple devices
spi: fix kernel-doc warnings about missing return desc in spi.c
spi: fix kernel-doc warnings about missing return desc in spi.h
spi: pxa2xx: Align a few defines
spi: pxa2xx: Save other reg_cs_ctrl bits when configuring chip select
...
An spi_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This patch adds support for edge triggered irq types. We remove the
locking for irq resources by enable/disable irq and allocate directly
some heap buffer at isr. We have still a enable/disable irq path but
this is for level-triggered irq's which need to be disabled until
spi_async clear the irq line.
There is usually a little race condition between "irq line cleared" and
"enable_irq". When in this time a edge triggered irq arrived, we will
not recognize this interrupt. This case can't happend at at86rf230. The
reason is that we unmask TRX_END irq's only which indicates a transmit
or receive completion, which depends on the current state.
On Transmit:
TRX_END arrived and transceiver is in TX_ARET_ON state again, in this
state no other TRX_END can happen until we leave the state.
On Receive:
This is protected with the RX_SAFE_MODE bit which leaves the transceiver
in RX_AACK_BUSY until we readed the framebuffer. In this state no other
TRX_END can happen.
Tested with RPi where I first detected issues between edge/level irq's.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Alexander Aring <alex.aring@gmail.com>
Cc: Stefan Schmidt <stefan@osg.samsung.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch introduce a more detailed information why edge triggered
irq's are currently not recommended. It could be that rising/falling
edge detection can happen while the irq is disabled.
Suggested-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch introduce debugfs support for collect trac status stats. To
clear the stats ifdown the interface of at86rf230 and start the
interface again.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
To abort a TX_ARET_BUSY state it's recommended to switch into TRX_OFF
state by doing STATE_TRX_FORCE_OFF. This patch will do always a TRX_OFF
state change when the transceiver stucks in any state. From TRX_OFF we
can switch to the states which are also possible by TX_ON state.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
When transmit is done, indicated by trx_end irq, we do first a force
state change to TX_ON and then checking the trac status, if the trac
status is unequal zero we do a state change to TRX_OFF.
This patch changes to the following behaviour, we first check on trac
status after trx_end occurs and then doing a normal change to TX_ON
without do the state change to TRX_OFF when trac status is unequal zero.
The reasons are that the datasheet doesn't described when the trac
status register is cleared, we should doing to evaluate the trac status
at first. The reason to remove the TRX_OFF change if the trac status is
unequal to zero and it was force is the following paragraph inside The
at86rf2xx datasheets:
"Using FORCE_PLL_ON to interrupt an TX_ARET transaction, it is
recommended to check register bits [7:5] of register address 0x32 for
value 0. If this value is different, TRX_CMD sequence FORCE_TRX_OFF shall
be used immediately followed by TRX_CMD sequence PLL_ON. This performs a
state transition to PLL_ON."
The meaning is here "to interrupt an TX_ARET transaction" in case of
trx_end interrupt the "TX_ARET transaction" is already done and we don't
interrupt the "TX_ARET transaction" by doing the change to TX_ON (PLL_ON)
here. Additional I changed the force change to normal TX_ON which seems to
work here.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch changes the state change behaviour of at86rf230 to always
TX_ARET mode. According the at86rf2xx datasheets TX_ARET mode doesn't
mean to be always waiting for ack frames after transmit. The transceiver
will automatically wait for ack frames or not if the acknowledge request
bit is set. See section "TX_ARET_ON – Transmit with Automatic Frame
Retransmission and CSMA-CA Retry".
Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
According Documentation/timers/timers-howto.txt the usually case for
setting up a hrtimer takes > ~10us. So we should use udelay in this
case so we are sure that the state change was done, before doing the
state change assert.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This code cleanups the start and stop callbacks by removing hw->priv and
using the already dereferenced variable lp which is the same.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for a new random csma backoffs settings when
going into sleep state. This is recommended according at86rf2xx
datasheets.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
While in sleep state then we can't access the at86rf2xx registers. This
patch checks if the transceiver is in sleep state before sending spi
messages via regmap. Regmap is used on every driver ops callback except
for receive and xmit handling, but while receive and xmit handling the
phy should not be inside the sleep state.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for sleep state when between stop and start
period. In this period the transceiver isn't used by the subsystem, in
this time we disable the irq and going into the sleep state.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch use high level interrupt type as fallback handling when no
irq type is given.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch removes the hardware auto acknowdledge flag which indicates
that the transceiver supports this handling. This flag is never
evaluated inside mac802154 and all transceivers should support this
handling by default per hardware.
Suggested-by: Lennert Buytenhek <buytenh@wantstofly.org>
Cc: Alan Ott <alan@signal11.us>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Acked-by: Stefan Schmidt <stefan@osg.samsung.com>
Acked-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch removes the virtual interface structure from sub if data
struct, because it isn't used anywhere. This structure could be useful
for give per interface information at softmac driver layer. Nevertheless
there exist no use case currently and it contains the interface type
information currently. This information is also stored inside wpan dev
which is now used to check on the wpan dev interface type.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Acked-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch add missing values for at86rf212 ed level values. Currently
there are 15 values and the register setting supports 16 different ed
level values.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reported-by: Craig Younkins <craig@freshtemp.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for the atusb transceiver.
The current driver supports basic functionality only. Possible further
tasks would be to sync functionality with the at86rf230 driver, because
the atusb use internally an at86rf231 transceiver. Some of these
features need a firmware update like AACK and ARET handling.
I did small changes to this driver to work with xmit_async callback and
setting of a random extended perm address.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Werner Almesberger <werner@almesberger.net>
Cc: Stefan Schmidt <s.schmidt@samsung.com>
Cc: Richard Sharpe <realrichardsharpe@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch fix the complete callback for going into aret on. Currently
we starting after a state change into aret on again a state change into
aret on which is not necessary.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds the reset states for tx power levels after running reset
procedure.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds reset values for cca ed level values after running reset
procedure.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch reworks the cca energy detection level handling. This
contains a calculation which works on all transceiver types and
add support for dump cca energy detection levels.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for get transmit power levels and reworks the
set of transmit power levels which was broken before.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch sets the at86rf230 supported cca modes. In case of at86rf212
it also can support listen before transmit.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch introduce a flag property for the wpan phy structure.
The current flag settings in ieee802154_hw are accessable in mac802154
layer only which is okay for flags which indicates MAC handling which
are done by phy. For real PHY layer settings like cca mode, transmit
power, cca energy detection level.
The difference between these flags are that the MAC handling flags are
only handled in mac802154/HardMac layer e.g. on an interface up. The phy
settings are direct netlink calls from nl802154 into the driver layer
and the nl802154 need to have a chance to check if the driver supports
this handling before sending to the next layer.
We also check now on PHY flags while dumping and setting pib attributes.
In comparing with MIB attributes the 802.15.4 gives us an default value
which we assume when a transceiver implement less functionality. In case
of MIB settings the nl802154 layer doesn't need to check on the
ieee802154_hw flags then.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch introduce the wpan_phy_supported struct for wpan_phy. There
is currently no way to check if a transceiver can handle IEEE 802.15.4
complaint values. With this struct we can check before if the
transceiver supports these values before sending to driver layer.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Suggested-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Acked-by: Varka Bhadram <varkabhadram@gmail.com>
Cc: Alan Ott <alan@signal11.us>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch change the handling of cca energy detection level from dbm to
mbm. This prepares to handle floating point cca energy detection levels
values. The old netlink 802.15.4 will convert the dbm value to mbm for
handling backward compatibility.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch change the handling of transmit power level from dbm to mbm.
This prepares to handle floating point transmit power levels values. The
old netlink 802.15.4 will convert the dbm value to mbm for handling
backward compatibility.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch change the transmit power from s8 to s32. This prepares to store a
mbm value instead dbm inside the transmit power variable. The old
interface keep the a s8 dbm value, which should be backward compatibility
when assign s8 to s32.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds support for one of the slp_tr gpio use cases which
indicates the TX_START command without doing some spi bus traffic.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
If a transmit ends in a calibration which means the transceiver do a
TRX_OFF state change, we can directly change into TX_ARET state instead
doing a TX_ON to TX_ARET statechange.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
All supported transceivers can do a valid state change from TRX_OFF to
AACK_ON. This patch removes the state change chain from TRX_OFF ->
TX_ON -> AACK_ON instead we doing a directly state change from TRX_OFF
to AACK_ON.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch adds a calibration timeout reset when change from TRX_OFF to
TX_ARET_ON which also occurs a calibration.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch moves the calculation timeout of TRX_OFF to RX_AACK_ON
handling to the async state change functionality. With this patch we can
do a reset of calculation timeout when others TRX_OFF to RX_AACK_ON
happens instead of doing this on interface up only.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch cleanups the at86rf230 driver to use a space instead a tab
after define.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Instead of using the 'magic' number of 0x1f the TRX_STATE_MASK macro is
introduced.
Signed-off-by: Christoffer Holmstedt <christoffer.holmstedt@gmail.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Netlink attribute for the power is s8. But for the driver level
operations we are collection power level value into integer.
It has to be change to s8 from int.
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch fix the error handling when is_tx is true. The error handling
tries to get the transceiver into RX_AACK_ON mode then we need to be
sure that is_tx is false.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This spinlock isn't necessary because if we are in TX_ON/TX_ARET_ON
state the transceiver can't be interrupted e.g. by receiving a frame
when a SHR was detected. In this time the transceiver doesn't leave
the TX_ON/TX_ARET_ON state until the tx complete irq change the state
into RX_AACK_ON again. This means a receiving interrupt in state
TX_ON/TX_ARET_ON can't happen and is_tx is protected by transceiver.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This patch fix an issue when at86rf230_read_subreg was successful. The
function at86rf230_read_subreg will directly call regmap_read which
returns zero on successful. Nobody figured out issues yet because it was
only necessary to evaluate dvdd state while probing. This could make
trouble because the stack variable could have an random value.
The function is also used by reset the irq line before requesting irq, but
the value isn't evaluated afterwards.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
These registers are also changed by transceiver and should be volatile
for right accessing via regmap debugfs.
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
