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2018-01-25sfc: on 8000 series use TX queues for TX timestampsEdward Cree
For this we create and use one or more new TX queues on the PTP channel, and enable sync events for it. Based on a patch by Martin Habets <mhabets@solarflare.com>. Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: MAC TX timestamp handling on the 8000 seriesMartin Habets
TX timestamps on 8000 series are supplied from the MAC. This timestamp is only 48 bits long. The high order bits from the last time sync event are used for the top 16 bits. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: only enable TX timestamping if the adapter is licensed for itMartin Habets
If we try to enable the feature and do not have the license for it, the MCPU will refuse and fail our TX queue init. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: use main datapath for HW timestamps if availableMartin Habets
We can now transmit SKBs in 2 ways: 1. Via the MC (for the 7XXX series and earlier), using efx_ptp_xmit_skb_mc(). 2. Via the TX queues on the dedicated PTP channel (8XXX series and later), using efx_ptp_xmit_skb_queue(). The PTP worker thread uses the method set up at probe time. It never checked the return code from the old efx_ptp_xmit_skb(), so it now returns void. We increment the TX dropped counter of the device if the transmit fails. As a result of the probe per channel the remove gets called multiple times. Clean up efx->ptp_data properly to avoid the 2nd call blowing up. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: add function to determine which TX timestamping method to useMartin Habets
Use MC capability MC_CMD_GET_CAPABILITIES_V2_OUT_TX_MAC_TIMESTAMPING to detect whether the NIC supports timestamping packets sent out the main datapath. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: handle TX timestamps in the normal data pathMartin Habets
Before this work, TX timestamping is done by sending each SKB to the MC. On the 8000 series (Medford1) we have high speed timestamping via the MAC, which means we can use normal TX queues for this without a significant drop in bandwidth. On the X2000 series (Medford2) support for transmitting via the MC is removed, so the new way must be used. This patch enables timestamping on a TX queue, if requested. It also enhances TX event handling to process the extra completion events, and puts the time in the SKB. Signed-off-by: Martin Habets <mhabets@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25sfc: remove tx and MCDI handling from NAPI budget considerationBert Kenward
The NAPI budget is only for RX processing work, not other work such as TX or MCDI completion handling. Signed-off-by: Bert Kenward <bkenward@solarflare.com> Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-25nvme-rdma: remove redundant boolean for inline_dataMax Gurtovoy
Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-01-25nvme: don't free uuid pointer before printing itJohannes Thumshirn
Commit df351ef73789 ("nvme-fabrics: fix memory leak when parsing host ID option") fixed the leak of 'p' but in case uuid_parse() fails the memory is freed before the error print that is using it. Free it after printing eventual errors. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Fixes: df351ef73789 ("nvme-fabrics: fix memory leak when parsing host ID option") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-01-25Merge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.gitKalle Valo
ath.git patches for 4.16. Major changes: wil6210 * add PCI device id for Talyn * support flashless device ath9k * improve RSSI/signal accuracy on AR9003 series
2018-01-25rtlwifi: btcoex: Fix some static warnings from SparsePing-Ke Shih
Add 'static' or declaration to resolve the warnings, and remove two unused functions halbtc_set_macreg() and halbtc_get_macreg() exposed when they were made static. Signed-off-by: Ping-Ke Shih <pkshih@realtek.com> Acked-by: Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-25RDMA/qedr: lower print level of flushed CQEsKalderon, Michal
There are races where can still get flush on CQEs before the QP enters error state. This is not an error and should be treated as debug information. Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com> Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-25RDMA/uverbs: Use an unambiguous errno for method not supportedJason Gunthorpe
Returning EOPNOTSUPP is problematic because it can also be returned by the method function, and we use it in quite a few places in drivers these days. Instead, dedicate EPROTONOSUPPORT to indicate that the ioctl framework is enabled but the requested object and method are not supported by the kernel. No other case will return this code, and it lets userspace know to fall back to write(). grep says we do not use it today in drivers/infiniband subsystem. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Reviewed-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-25ata: pata_pdc2027x: Replace mdelay with msleepJia-Ju Bai
After checking all possible call chains to pdc_adjust_pll and pdc_detect_pll_input_clock, my tool finds that these functions are never called in atomic context, namely never in an interrupt handler or holding a spinlock. And their caller functions pdc2027x_init_one and pdc2027x_reinit_one calls pci_enable_device which can sleep, and no spinlock is held when calling pdc_adjust_pll and pdc_detect_pll_input_clock, so it proves that pdc_adjust_pll and pdc_detect_pll_input_clock can call functions which can sleep. Thus mdelay can be replaced with msleep to avoid busy wait. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2018-01-25ata: pata_it821x: Replace mdelay with usleep_range in it821x_firmware_commandJia-Ju Bai
After checking all possible call chains to it821x_firmware_command here, my tool finds that it821x_firmware_command is never called in atomic context, namely never in an interrupt handler or holding a spinlock. And it821x_firmware_command calls kmalloc(GFP_KERNEL), so it proves again that it821x_firmware_command can call functions which can sleep. Thus mdelay can be replaced with usleep_range to avoid busy wait. This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2018-01-25ata: sata_mv: Replace mdelay with usleep_range in mv_reset_channelJia-Ju Bai
After checking all possible call chains to mv_reset_channel here, my tool finds that mv_reset_channel is never called in atomic context, namely never in an interrupt handler or holding a spinlock. Thus mdelay can be replaced with usleep_range to avoid busy wait. This is found by a static analysis tool named DCNS written by myself. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
2018-01-25nvme-pci: Suspend queues after deleting themKeith Busch
The driver had been abusing the cq_vector state to know if new submissions were safe, but that was before we could quiesce blk-mq. If the controller happens to get an interrupt through while we're suspending those queues, 'no irq handler' warnings may occur. This patch will disable the interrupts only after the queues are deleted. Reported-by: Jianchao Wang <jianchao.w.wang@oracle.com> Tested-by: Jianchao Wang <jianchao.w.wang@oracle.com> Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2018-01-25RDMA/srpt: Fix RCU debug build errorLeon Romanovsky
Combination of CONFIG_DEBUG_OBJECTS_RCU_HEAD=y and CONFIG_INFINIBAND_SRPT=m produces the following build error. ERROR: "init_rcu_head" [drivers/infiniband/ulp/srpt/ib_srpt.ko] undefined! make[1]: *** [scripts/Makefile.modpost:92: __modpost] Error 1 make: *** [Makefile:1216: modules] Error 2 The reason to it that init_rcu_head() is not exported and not supposed to be used in modules. It is needed for dynamic initialization of statically allocated rcu_head structures. Fixes: 795bc112cd5a ("IB/srpt: Make it safe to use RCU for srpt_device.rch_list") Fixes: a11253142e6d ("IB/srpt: Rework multi-channel support") Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-25PCI: Make of_irq_parse_pci() staticRob Herring
Now that the DT PCI code is merged into drivers/pci, of_irq_parse_pci() can be static. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Cc: Frank Rowand <frowand.list@gmail.com>
2018-01-26crypto: picoxcell - Fix error handling in spacc_probe()Alexey Khoroshilov
If clk_get() fails, device_remove_file() looks inappropriate. The error path, where all crypto_register fail, misses resource deallocations. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Reviewed-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: artpec6 - remove select on non-existing CRYPTO_SHA384Corentin LABBE
Since CRYPTO_SHA384 does not exists, Kconfig should not select it. Anyway, all SHA384 stuff is in CRYPTO_SHA512 which is already selected. Fixes: a21eb94fc4d3i ("crypto: axis - add ARTPEC-6/7 crypto accelerator driver") Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26hwrng: bcm2835 - Remove redundant dev_err call in bcm2835_rng_probe()weiyongjun \(A\)
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Eric Anholt <eric@anholt.net> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: stm32 - remove redundant dev_err call in stm32_cryp_probe()weiyongjun \(A\)
There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: axis - remove unnecessary platform_get_resource() error checkweiyongjun \(A\)
devm_ioremap_resource() already checks if the resource is NULL, so remove the unnecessary platform_get_resource() error check. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-26crypto: inside-secure - make function safexcel_try_push_requests staticColin Ian King
The function safexcel_try_push_requests is local to the source and does not need to be in global scope, so make it static. Cleans up sparse warning: symbol 'safexcel_try_push_requests' was not declared. Should it be static? Signed-off-by: Colin Ian King <colin.king@canonical.com> [Antoine: fixed alignment] Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2018-01-25device property: Reuse property_entry_free_data()Andy Shevchenko
Reuse property_entry_free_data() in property_entry_copy_data() to make code slightly cleaner. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25device property: Move property_entry_free_data() upperAndy Shevchenko
It's just a preparatory patch to use property_entry_free_data() later on. No functional change intended. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25Staging: rtl8723bs: Use !x instead of NULL comparisonShreeya Patel
If "x" is compared to NULL, use "!x" instead of it, so as to follow the kernel coding style. Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25Staging: rtl8723bs: Remove dead codeShreeya Patel
"oldmem==NULL;" The above bug under the ifdef code would have caused a GCC warning if it were ever compiled. Hence, remove the dead ifdefed code from the file. Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25Staging: rtl8723bs: Change names to conform to the kernel codeShreeya Patel
Change names of some variables and functions to conform to the kernel coding style. The changes include some removal of CamelCase warnings and renaming the variable and field names that encode their type (eg the pointers seem to start with p). Signed-off-by: Shreeya Patel <shreeya.patel23498@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25staging: ccree: Fix missing blank line after declarationKamal Heib
Fix the following warning found by checkpatch.pl WARNING: Missing a blank line after declarations + struct cc_cipher_handle *blkcipher_handle = drvdata->blkcipher_handle; + if (blkcipher_handle) { Signed-off-by: Kamal Heib <kamalheib1@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25staging: rtl8188eu: remove redundant initialization of 'pwrcfgcmd'Colin Ian King
Structure pwrcfgcmd is being zero'd at initialization however this value is never read as few statements later in a loop it is being assigned a new value, hence the initialization is redundant and can be removed. Cleans up clang warning: drivers/staging/rtl8188eu/hal/pwrseqcmd.c:25:20: warning: Value stored to 'pwrcfgcmd' during its initialization is never read Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25staging: rtlwifi: remove unused RTLHALMAC_ST and RTLPHYDM_STCorentin Labbe
Since nothing builds/depends on RTLHALMAC_ST and RTLPHYDM_ST, we could remove them. Furthermore, they are totally undocumented Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25staging: fbtft: remove unused FB_TFT_SSD1325 kconfigCorentin Labbe
Since nothing builds/depends on FB_TFT_SSD1325, we could remove it. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25firmware: Drop FIRMWARE_IN_KERNEL Kconfig optionBenjamin Gilbert
It doesn't actually do anything. Merge its help text into EXTRA_FIRMWARE. Fixes: 5620a0d1aacd ("firmware: delete in-kernel firmware") Fixes: 0946b2fb38fd ("firmware: cleanup FIRMWARE_IN_KERNEL message") Signed-off-by: Benjamin Gilbert <benjamin.gilbert@coreos.com> Signed-off-by: Robin H. Johnson <robbat2@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25USB: serial: keyspan: Drop firmware Kconfig optionsBenjamin Gilbert
The USB_SERIAL_KEYSPAN_* firmware options no longer do anything. Fixes: 5620a0d1aacd ("firmware: delete in-kernel firmware") Signed-off-by: Benjamin Gilbert <benjamin.gilbert@coreos.com> Cc: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25tty: serial: exar: Relocate sleep wake-up handlingAaron Sierra
Exar sleep wake-up handling has been done on a per-channel basis by virtue of INT0 being accessible from each channel's address space. I believe this was initially done out of necessity, but now that Exar devices have their own driver, we can do things more efficiently by registering a dedicated INT0 handler at the PCI device level. I see this change providing the following benefits: 1. If more than one port is active, eliminates the redundant bus cycles for reading INT0 on every interrupt. 2. This note associated with hooking in the per-channel handler in 8250_port.c is resolved: /* Fixme: probably not the best place for this */ Cc: Matt Schulte <matts@commtech-fastcom.com> Signed-off-by: Aaron Sierra <asierra@xes-inc.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25char: lp: use true or false for boolean valuesGustavo A. R. Silva
Assign true or false to boolean variables instead of an integer value. This issue was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25android: binder: use VM_ALLOC to get vm areaGanesh Mahendran
VM_IOREMAP is used to access hardware through a mechanism called I/O mapped memory. Android binder is a IPC machanism which will not access I/O memory. And VM_IOREMAP has alignment requiement which may not needed in binder. __get_vm_area_node() { ... if (flags & VM_IOREMAP) align = 1ul << clamp_t(int, fls_long(size), PAGE_SHIFT, IOREMAP_MAX_ORDER); ... } This patch will save some kernel vm area, especially for 32bit os. In 32bit OS, kernel vm area is only 240MB. We may got below error when launching a app: <3>[ 4482.440053] binder_alloc: binder_alloc_mmap_handler: 15728 8ce67000-8cf65000 get_vm_area failed -12 <3>[ 4483.218817] binder_alloc: binder_alloc_mmap_handler: 15745 8ce67000-8cf65000 get_vm_area failed -12 Signed-off-by: Ganesh Mahendran <opensource.ganesh@gmail.com> Acked-by: Martijn Coenen <maco@android.com> Acked-by: Todd Kjos <tkjos@google.com> Cc: stable <stable@vger.kernel.org> ---- V3: update comments V2: update comments Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25android: binder: Use true and false for boolean valuesGustavo A. R. Silva
Assign true or false to boolean variables instead of an integer value. This issue was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Cc: Todd Kjos <tkjos@android.com> Cc: Martijn Coenen <maco@android.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25lkdtm: fix handle_irq_event symbol for INT_HW_IRQ_ENIvan Delalande
Function handle_IRQ_event was retired in v2.6.39 and replaced with handle_irq_event but nobody changed it in lkdtm so INT_HW_IRQ_EN has been broken for a while. Fixes: 33b054b867b8 ("genirq: Remove handle_IRQ_event") Signed-off-by: Travis Brown <travisb@arista.com> Signed-off-by: Ivan Delalande <colona@arista.com> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25USB: serial: pl2303: new device id for ChilitagGreg Kroah-Hartman
This adds a new device id for Chilitag devices to the pl2303 driver. Reported-by: "Chu.Mike [朱堅宜]" <Mike-Chu@prolific.com.tw> Cc: stable <stable@vger.kernel.org> Acked-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-25Bluetooth: btintel: Create common function for firmware downloadTedd Ho-Jeong An
The firmware download flow for RAM SKU is same for both USB and UART and this patch creates a common function for both driver. Signed-off-by: Tedd Ho-Jeong An <tedd.an@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-01-25mtd: nand: sunxi: Fix ECC strength choiceMiquel Raynal
When the requested ECC strength does not exactly match the strengths supported by the ECC engine, the driver is selecting the closest strength meeting the 'selected_strength > requested_strength' constraint. Fix the fact that, in this particular case, ecc->strength value was not updated to match the 'selected_strength'. For instance, one can encounter this issue when no ECC requirement is filled in the device tree while the NAND chip minimum requirement is not a strength/step_size combo natively supported by the ECC engine. Fixes: 1fef62c1423b ("mtd: nand: add sunxi NAND flash controller support") Cc: <stable@vger.kernel.org> Suggested-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2018-01-25mtd: nand: gpmi: Fix subpage readsBoris Brezillon
Commit 25f815f66a14 ("mtd: nand: force drivers to explicitly send READ/PROG commands") added a call to nand_read_page_op() in gpmi_ecc_read_page(), which means this function now sends a READ0 command and place the data pointer at the beginning of the page. This logic is breaking gpmi_ecc_read_subpage() which was calling gpmi_ecc_read_page() and expected it to only retrieve the data without sending the READ0 command. Create a gpmi_ecc_read_page_data() helper which only does the data retrieval and ECC correction steps and implement gpmi_ecc_read_page() as a wrapper that calls nand_read_page_op()+gpmi_ecc_read_page_data(). This way, gpmi_ecc_read_subpage() can call gpmi_ecc_read_page_data() which restores the logic we had before commit 25f815f66a14 ("mtd: nand: force drivers to explicitly send READ/PROG commands"). Fixes: 25f815f66a14 ("mtd: nand: force drivers to explicitly send READ/PROG commands") Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Reviewed-by: Miquel Raynal <miquel.raynal@free-electrons.com> Acked-by: Han Xu <han.xu@nxp.com>
2018-01-25wcn36xx: release DMA memory in case of errorRamon Fried
wcn36xx_dxe_init() doesn't check for the return value of wcn36xx_dxe_init_descs(), release the resources in case an error ocurred. Signed-off-by: Ramon Fried <rfried@codeaurora.org> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-25ath9k: Display calibration data piers in debugfsWojciech Dubowik
Display per frequency calibration data in dump_modal debugfs entry including reference power, voltage, tx temperature and noise floor. Example of chain 0 of OEM card (dump from modal_eeprom): Chain 0 Freq ref volt temp nf_Cal nf_Pow rx_temp 5180 -30 0 137 0 0 0 5320 -24 0 137 0 0 0 5500 -15 0 137 0 0 0 5620 -10 0 137 0 0 0 5700 -15 0 137 0 0 0 5745 -16 0 135 0 0 0 5785 -19 0 136 0 0 0 5825 -22 0 136 0 0 0 Example of a card with calibrated noise floor. Chain 0 Freq ref volt temp nf_Cal nf_Pow rx_temp 4890 -49 0 128 -107 -97 124 5100 -23 0 128 -101 -96 124 5180 -18 0 128 -101 -96 124 5300 -12 0 128 -102 -97 124 5500 -9 0 128 -101 -97 125 5640 -17 0 128 -101 -98 124 5785 -25 0 128 -101 -98 124 5940 -33 0 128 -106 -99 124 Signed-off-by: Wojciech Dubowik <Wojciech.Dubowik@neratec.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-25ath9k: Use calibrated noise floor value when availableWojciech Dubowik
AR9003 series allows to calibrate noise floor for different frequency bins. Once it's done it's possible to get more accurate rssi/signal values over whole frequency band at a given temperature. The RSSI/signal accuracy reported by calibrated RF cards improves from 6 to up to 2dB. This could be interesting for application which require good signal accuracy like roaming or mesh protocols. Signed-off-by: Wojciech Dubowik <Wojciech.Dubowik@neratec.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-25ath9k: Read noise floor calibration data from eepromWojciech Dubowik
AR9003 devices can have calibrated noise floor values which can be used instead of hard coded one. Read them from eeprom and save interpolated value in nf limits for the current channel. Signed-off-by: Wojciech Dubowik <Wojciech.Dubowik@neratec.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
2018-01-25ath9k: Alternative EEPROM size for AR9003Wojciech Dubowik
AR9003 factory calibration allows to use bigger EEPROM than standard 1k without changing the default layout. Allow probing of EEPROM at alternative address if initial check for default fails. The original ar9003 eeprom ops are still be used. Signed-off-by: Wojciech Dubowik <Wojciech.Dubowik@neratec.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
generated by cgit (git 2.34.1) at 2025-09-22 17:48:58 +0000