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* cc2520: Add support for CC2591 amplifier.Brad Campbell2015-03-18
| | | | | | | | | | | | | | | | | | | | | | | | | | The TI CC2521 is an RF power amplifier that is designed to interface with the CC2520. Conveniently, it directly interfaces with the CC2520 and does not require any pins to be connected to a microcontroller/processor. Adding a CC2591 increases the CC2520's range, which is useful for border router and other wall-powered applications. Using the CC2591 with the CC2520 requires configuring the CC2520 GPIOs that are connected to the CC2591 to correctly set the CC2591 into TX and RX modes. Further, TI recommends that the CC2520_TXPOWER and CC2520_AGCCTRL1 registers are set differently to maximize the CC2591's performance. These settings are covered in TI Application Note AN065. This patch adds an optional `amplified` field to the cc2520 entry in the device tree. If present, the CC2520 will be configured to operate with a CC2591. The expected pin mapping is: CC2520 GPIO0 --> CC2591 EN CC2520 GPIO5 --> CC2591 PAEN Signed-off-by: Brad Campbell <bradjc5@gmail.com> Acked-by: Varka Bhadram <varkabhadram@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* cc2520: Do not store platform_data in spi_deviceBrad Campbell2015-03-18
| | | | | | | | | | | | | | | Storing the `platform_data` struct inside of the SPI struct when using the device tree allows for a later function to edit the content of that struct. This patch refactors the `cc2520_get_platformat_data` function to accept a pointer to a `cc2520_platform_data` struct and populates the fields inside of it. This change mirrors commit aaa1c4d226e4cd730075d3dac99a6d599a0190c7 ("at86rf230: copy pdata to driver allocated space"). Signed-off-by: Brad Campbell <bradjc5@gmail.com> Acked-by: Varka Bhadram <varkabhadram@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: fix at86rf230_read_subreg succeed handlingAlexander Aring2015-03-17
| | | | | | | | | | | | | | 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>
* at86rf230: fix volatile regmap registersAlexander Aring2015-03-14
| | | | | | | | 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>
* at86rf230: add support for calibration timeoutAlexander Aring2015-03-14
| | | | | | | | | | | | | | | | | | | | This patch adds a handling for calibration if we are 5 minutes in PLL state. I first tried to implement the calibration functionality in TX_ON state via register values CF_START and DCU_START, but this occurs a one second delay at each calibration time. An another solution to start a calibration is to switch from TRX_OFF state into TX_ON, then a calibration is done automatically by transceiver. This method will be used in this patch, after each transmit of a frame we check with jiffies if the PLL is set 5 minutes without doing a TRX_OFF->(TX_ON || RX_AACK_ON) or channel switch. The worst case would be a transceiver in receiving mode only, but this is under normal operation very unlikely. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Cc: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Cc: Werner Almesberger <werner@almesberger.net> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: replace state change sleeps with hrtimerAlexander Aring2015-03-14
| | | | | | | | | | | This patch replace the state change timing relevant sleeps with hrtimers. Currently the sleeps are done in the complete handler of spi_async. The relation of doing the state change timing sleep with a timer will get the sleep functionality out of spi_async complete handler context. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: init xtal_trim with zeroAlexander Aring2015-03-14
| | | | | | | | | | | This patch initialize xtal_trim value to zero. The xtal_trim property is an optional device tree value. Currently if no xtal_trim property is given the xtal_trim value can be contain random data, because it's a stack variable. This patch init the xtal_trim value to zero which is also the default value after reset for at86rf230 transceivers. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: restore trx len when neededAlexander Aring2015-03-02
| | | | | | | | | | | | In the most cases the spi messages has a length of two. Currently we always set the the len field to two before transmit a spi message. In cases for read out/write in the frame buffer we need another len. This patch use trx len two as default. For the frame buffer cases we restore the trx len to two on success and failure. This will reduce the len setting of two when it's already two. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: remove multiple dereferencing for ctxAlexander Aring2015-03-02
| | | | | | | | | | | | This patch cleanups the referencing for the state change context variable. The state change context should only set once and this is by initial a state change. This patch will use the initial state change variable in the complete handler of the state change by using the ctx context which should be always the same like the initial state change context. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: remove multiple dereferencing for irqAlexander Aring2015-03-02
| | | | | | | | By holding the irq variable inside at86rf230_state_change we can squash some multiple dereferencing for getting irq num. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: refactor receive handlingAlexander Aring2015-03-02
| | | | | | | This patch refactor the receive handling into one function. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: cleanup and squash stack variableAlexander Aring2015-03-02
| | | | | | | | | I had this variable because I thought it would be protected by disable/enable irq but this is not true. It's protected by stop/wake netdev queue which is called by ieee802154_xmit_complete. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: add transmit retry supportAlexander Aring2015-03-02
| | | | | | | | | | | | | | | | | | This patch introduce a transmit retry handling into at86rf230 transmit path. Current behaviour is to wait the normal receive time if we want to go into STATE_TX_ON when the transceiver is in STATE_BUSY_RX_AACK which indicates that a frame is currently receiving. A non force state change will not interrupt the the receiving state. The current behaviour is that after the normal receive time we will start a force change into STATE_TX_ON. With this patch we do seven retries to go into STATE_TX_ON without forcing. After we hit the AT86RF2XX_MAX_TX_RETRIES we will start the force state change. This is a polling like method to go into STATE_TX_ON in times of maximum receiving time. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: add warning if edge-triggered irqAlexander Aring2015-02-27
| | | | | | | | | | | | | While testing I experience a deadlock while using the at86rf233 on a raspberry pi. The reason was an edge triggered gpio irq because the irq triggered while irq was disabled. This issue doesn't happend on a level triggered irq because the irq will hit after calling enable_irq. This patch adds a warning that it's not recommended to use a edge-triggered irq type. Also change the examples to high-level irqtype. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: add irq low-level for polarityAlexander Aring2015-02-27
| | | | | | | | | The at86rf2xx chips supports the setting of irq polarity if active low or active high. This patch adds a handling for IRQ_ACTIVE_LOW if the irq_type is IRQ_TYPE_LEVEL_LOW. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: add irqmask mode settingAlexander Aring2015-02-27
| | | | | | | | | Since we support at86rf233 we need to ensure that basic operation default values are the same. This patch always sets IRQ_MASK_MODE to 0 which is after reset 1 at the at86rf233 and 0 at the at86rf231. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: remove tx_timeoutAlexander Aring2015-02-27
| | | | | | | | | | This patch removes tx_timeout handling. We used it in sync xmit handling. Since we support async xmit handling a xmit timeout handling isn't easy to implement and should be implemented by netdev watchdog mechanism. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: add support for external xtal trimAlexander Aring2015-02-27
| | | | | | | | This patch adds support for setting the xtal trim register. Some at86rf2xx transceiver boards needs fine tuning the xtal capacitor. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: copy pdata to driver allocated spaceAlexander Aring2015-02-27
| | | | | | | | | | This patch copies the platform data in driver allocated space at first. With this change we ensure that we access the allocated platform data as readonly space. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Reported-by: Marc Kleine-Budde <mkl@pengutronix.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: assign wait_for_completion_timeout to appropriately typed varNicholas Mc Guire2015-02-14
| | | | | | | | | | return type of wait_for_completion_timeout is unsigned long not int. As rc is used here only for wait_for_completion_timeout the type is simply changed to unsigned long. Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154: cc2520: Fix space before , coding style issueMohammad Jamal2015-02-02
| | | | | | | | | This patch removes the warnings (space before , ) shown by checkpatch.pl Signed-off-by: Mohammad Jamal <md.jamalmohiuddin@gmail.com> Acked-by: Varka Bhadram <varkabhadram@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154: cc2520: Replace shift operations by BIT macroMohammad Jamal2015-02-02
| | | | | | | | This patch replaces the shifting operations by BIT macro Signed-off-by: Mohammad Jamal <md.jamalmohiuddin@gmail.com> Acked-by: Varka Bhadram <varkabhadram@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: Constify struct regmap_configKrzysztof Kozlowski2015-01-05
| | | | | | | | The regmap_config struct may be const because it is not modified by the driver and regmap_init() accepts pointer to const. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* cc2520: fix zero perm_extended_addr addressVarka Bhadram2014-12-30
| | | | | | | It will remove the bug of havine zero perm_extended_addr address. Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* cc2520: remove 'ret' goto labelVarka Bhadram2014-12-30
| | | | | | | | If allocation of memory fails instead of going to ret goto label and returning from there, we can directly return -ENOMEM on failure. Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* cc2520: use devm_kzalloc(.., sizeof(*pointer), ..) patternVarka Bhadram2014-12-30
| | | | | Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* net: ieee802154: don't use devm_pinctrl_get_select_default() in probeWolfram Sang2014-12-30
| | | | | | | | | Since commit ab78029ecc34 (drivers/pinctrl: grab default handles from device core), we can rely on device core for setting the default pins. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Varka Bhadram <varkabhadram@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: cleanup check on trac statusAlexander Aring2014-12-19
| | | | | | Signed-off-by: Alexander Aring <alex.aring@gmail.com> Reviewed-by: Stefan Schmidt <s.schmidt@samsung.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: remove version check for AT86RF212Andrey Yurovsky2014-12-18
| | | | | | | | | | | | | | This version check allows the driver to only work with v=1 hardware however there is no driver-facing difference with newer versions (confirmed by Atmel FAEs) so this check needlessly prevents the driver from being used with radios now in production. Tested on AT86RF212B radio (which came up as v=3). Signed-off-by: Andrey Yurovsky <yurovsky@gmail.com> Reviewed-by: Stefan Schmidt <s.schmidt@samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: fix register read for part versionAndrey Yurovsky2014-12-18
| | | | | | | | | | | | | The driver was reading the PART_NUM register for both the part number (type of device) and the part version, the version is actually in register 0x1D, VERSION_NUM. I believe that this was a copy-paste error. Tested on AT86RF212B where the part is detected to be the expected part number (0x07) and version (0x03 on mine). Signed-off-by: Andrey Yurovsky <andrey@snupi.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: remove unnecessary assignAlexander Aring2014-12-18
| | | | | | | | The attribute extra_tx_headroom should already be zero. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Reviewed-by: Stefan Schmidt <s.schmidt@samsung.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: fix context pointer handlingAlexander Aring2014-12-18
| | | | | | | | | | This patch changes the context pointer to the parameter given one inside function at86rf230_async_state_change_start. This could occur problem if context isn't pointed to lp->state. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Reviewed-by: Stefan Schmidt <s.schmidt@samsung.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: make at86rf230_async_error inlineAlexander Aring2014-12-18
| | | | | | | | | This patch makes the at86rf230_async_error inline. This function is small enough to handle inline. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Reviewed-by: Stefan Schmidt <s.schmidt@samsung.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: remove if branchAlexander Aring2014-12-18
| | | | | | | | | This patch removes an unnecessary if branch inside the tx complete handler. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Reviewed-by: Stefan Schmidt <s.schmidt@samsung.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154/mrf24j40: Fix alignment of parenthesisStefan Schmidt2014-12-18
| | | | | | | CC: Alan Ott <alan@signal11.us> Signed-off-by: Stefan Schmidt <s.schmidt@samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154/mrf24j40: Fix typo begining -> beginningStefan Schmidt2014-12-18
| | | | | | | CC: Alan Ott <alan@signal11.us> Signed-off-by: Stefan Schmidt <s.schmidt@samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154/cc2520: Remove extra blank linesStefan Schmidt2014-12-18
| | | | | | | CC: Varka Bhadram <varkabhadram@gmail.com> Signed-off-by: Stefan Schmidt <s.schmidt@samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154/at86rf230: Fix typo unkown -> unknownStefan Schmidt2014-12-18
| | | | | | Signed-off-by: Stefan Schmidt <s.schmidt@samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154/at86rf230: Align to opening parenthesisStefan Schmidt2014-12-18
| | | | | | Signed-off-by: Stefan Schmidt <s.schmidt@samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154/at86rf230: Remove unneeded blank linesStefan Schmidt2014-12-18
| | | | | | Signed-off-by: Stefan Schmidt <s.schmidt@samsung.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* at86rf230: add reset state cca handlingAlexander Aring2014-12-18
| | | | | | | | This patch adds the default cca setting after device reset for at86rf230 driver. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154: rework cca settingAlexander Aring2014-12-18
| | | | | | | | | | The current cca setting handle is a driver specific call. We need to introduce some 802.15.4 specific layer and mapping 802.15.4 cca modes to driver specific ones inside the 802.15.4 driver. This patch will add such 802.15.4 layer and mapping the cca settings to driver specific ones. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds2014-12-14
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
| * net: ieee802154: drop owner assignment from platform_driversWolfram Sang2014-10-20
| | | | | | | | | | | | | | A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
* | cc2520: adds terminating newlineVarka Bhadram2014-12-05
| | | | | | | | | | | | Signed-off-by: Varka Bhadram <varkab@cdac.in> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | at86rf230: fix commentation for symbol durationAlexander Aring2014-11-17
| | | | | | | | | | | | | | | | | | This patch fix an copy&paste issue in the comment of setting symbol duration. These comments are more correct according the at86rf212 datasheet now. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | at86rf230: remove interframe spacing time workaroundAlexander Aring2014-11-12
| | | | | | | | | | | | | | | | | | | | | | This patch removes the interframe spacing time workaround from at86rf230 driver and use the mac802154 one. The interframe spacing time differs at at86rf212 and channel setting. This patch fix this handling which is also a new workaround and should be moved into mac802154 while channel setting. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | mac802154: add interframe spacing time handlingAlexander Aring2014-11-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds a new interframe spacing time handling into mac802154 layer. Interframe spacing time is a time period between each transmit. This patch adds a high resolution timer into mac802154 and starts on xmit complete with corresponding interframe spacing expire time if ifs_handling is true. We make it variable because it depends if interframe spacing time is handled by transceiver or mac802154. At the timer complete function we wake the netdev queue again. This avoids new frame transmit in range of interframe spacing time. For synced driver we add no handling of interframe spacing time. This is currently a lack of support in all synced xmit drivers. I suppose it's working because the latency of workqueue which is needed to call spi_sync. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | at86rf230: remove invalid max frame retries checkAlexander Aring2014-11-11
| | | | | | | | | | | | | | | | | | | | | | This patch removes the invalid max frame retries check from driver layer. This is already handled by nl802154 framework. Also the IEEE 802.15.4 standard doesn't allow a frame retries setting above 7. This seems to be valid for the at86rf230 transceiver but the chip running out of spec then. We only allow settings according 802.15.4 right now. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* | at86rf230: remove invalid max csma backoffs checkAlexander Aring2014-11-11
| | | | | | | | | | | | | | | | This patch removes the invalid check on max csma backoffs in driver layer. This is already handled by nl802154 framework. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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