- 04 Oct, 2019 15 commits
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Jérôme Pouiller authored
bh_work() is in charge to schedule all HIF message from/to chip. On normal operation, when an IRQ is received, driver can get size of next message in control register. In order to save control register access, when chip send a message, it also appends a copy of control register after the message (this register is not accounted in message length declared in message header, but must accounted in bus request). This copy of control register is called "piggyback". It also handles a power saving mechanism specific to WFxxx series. This mechanism is based on a GPIO called "wakeup" GPIO. Obviously, this gpio is not part of SPI/SDIO standard buses and must be declared independently (this is the main reason for why SDIO mode try to get parameters from DT). When wakeup is enabled, host can communicate with chip only if it is awake. To wake up chip, there are two cases: - host receive an IRQ from chip (chip initiate communication): host just have to set wakeup GPIO before reading data - host want to send data to chip: host set wakeup GPIO, then wait for an IRQ (in fact, wait for an empty message) and finally send data bh_work() is also in charge to track usage of chip buffers. Normally each request expect a confirmation. However, you can notice that special "multi tx" confirmation can acknowledge multiple requests at time. Finally, note that wfx_bh_request_rx() is not atomic (because of control_reg_read()). So, in SPI mode, hard-irq handler only postpone all processing to wfx_spi_request_rx(). Signed-off-by:Jérôme Pouiller <jerome.pouiller@silabs.com> Link: https://lore.kernel.org/r/20190919142527.31797-8-Jerome.Pouiller@silabs.comSigned-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Jérôme Pouiller authored
These files are shared with firmware sources. Only a subset of these definitions are used by driver but, for now, it is easier to import all. API defines 3 kinds of messages: - Requests (req) are sent from host to chip - Confirmations (cnf) are sent by chip and are always in reply to a request - Indications (ind) are spontaneous message from chip to host One request normally generate one confirmation. There are a few exceptions to this rule: - "shutdown" request is not acknowledged - multiple tx request can be acknowledged a unique "multi-tx" confirmation In add, API defines MIB. They are sub-structures for write_mib and read_mib API. Note that all numbers in API have to be little endian when sent/received from/to chip (I didn't declared them with __le32 because driver also use them internally). Signed-off-by: -
Jérôme Pouiller authored
A firmware is necessary to run the chip. wfx_init_device() is in charge of loading firmware on chip and doing low level initialization. Firmwares for WF200 are available here: https://github.com/SiliconLabs/wfx-firmware/ Note that firmware are encrypted. Driver checks that key used to encrypt firmware match with key burned into chip. Currently, "C0" key is used for production chips. Signed-off-by:
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Jérôme Pouiller authored
Some tracepoints are useful for debugging. Signed-off-by:
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Jérôme Pouiller authored
hwio.c provides an abstraction to access different types of register of the chip. Note that only data register (aka FRAME_OUT) and control register are used normal communication. Other registers are only used during chip start up. Signed-off-by:
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Jérôme Pouiller authored
Introduce bus level communication layer. At this level, 7 registers can be addressed. Notice that SPI driver is able to manage chip reset. SDIO mode relies on an external driver (`mmc-pwrseq`) to reset chip. Signed-off-by:
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Jérôme Pouiller authored
Instantiate build infrastructure WFx driver. This driver provides support for Wifi chipset Silicon Labs WF200 and further: https://www.silabs.com/documents/public/data-sheets/wf200-datasheet.pdf This chip support SPI and SDIO bus. SDIO interface has two particularities: 1. Some parameters may be useful for end user (I will talk about gpio_wakeup later). 2. The SDIO VID and PID of WF200 are 0000:0001 which are too much generic to rely on. So, current code checks VID/PID and looks for a node in DT (since WF200 targets embedded platforms, I don't think it is a problem to rely on DT). DT can also be used to define to parameters for driver. Currently, if no node is found, a warning is emitted, but it could be changed in error. Signed-off-by:
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Valdis Klētnieks authored
We've seen several incorrect patches for fs_sync() calls in the exfat driver. Add code to the TODO that explains this isn't just a delete code and refactor, but that actual analysis of when the filesystem should be flushed to disk needs to be done. Signed-off-by:
Valdis Kletnieks <valdis.kletnieks@vt.edu> Link: https://lore.kernel.org/r/9837.1570042895@turing-policeSigned-off-by:
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Valdis Klētnieks authored
The majority of them were totally backwards. Change the logic so that if DELAYED_SYNC *isn't* in the config, we actually flush to disk before flagging the file system as clean. That leaves two calls in the DELAYED_SYNC case. More detailed analysis is needed to make sure that's what's really needed, or if other call sites also need a fs_sync() call. This patch is at least "less wrong" than the code was, but further changes should be another patch. Signed-off-by:
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Michael Straube authored
Cleanup comments in update_hw_ht_param to follow kernel coding style and avoid line length over 80 characters. Signed-off-by:
Michael Straube <straube.linux@gmail.com> Link: https://lore.kernel.org/r/20191003122514.1760-5-straube.linux@gmail.comSigned-off-by:
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Michael Straube authored
Replace tabs with spaces in declarations and reomve two blank lines in update_hw_ht_param to cleanup whitespace and improve readability. Signed-off-by:
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Michael Straube authored
Rename the local varibles max_AMPDU_len and min_MPDU_spacing to avoid mixed case. max_AMPDU_len -> max_ampdu_len min_MPDU_spacing -> min_mpdu_spacing Signed-off-by:
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Michael Straube authored
Convert the local variables max_AMPDU_len and min_MPDU_spacing from unsigned char to u8 and remove unnecessary castings to u8 pointer. Signed-off-by:
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Rohit Sarkar authored
Now that snprintf is replaced by scnprintf n >= MAX_WPA_IE_LEN doesn't make sense as the maximum value n can take is MAX_WPA_IE_LEN. Signed-off-by:
Rohit Sarkar <rohitsarkar5398@gmail.com> Reviewed-by:
Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20191002170518.GA1688@SARKARSigned-off-by:
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Nachammai Karuppiah authored
Avoid typedefs to maintain kernel coding style. Issue found by checkpatch.pl Replace the enum typedef VCHIQ_REASON_T with vchiq_reason. Signed-off-by:
Nachammai Karuppiah <nachukannan@gmail.com> Link: https://lore.kernel.org/r/1570125797-24410-1-git-send-email-nachukannan@gmail.comSigned-off-by:
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- 30 Sep, 2019 25 commits
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Sven Van Asbroeck authored
anybus-s cards use the "offline mode" property to determine if process memory should be clear, set, or frozen when the card is offline. Move this property to the fieldbus core, so that it can become part of the future fieldbus config interface. Signed-off-by:
Sven Van Asbroeck <TheSven73@gmail.com> Link: https://lore.kernel.org/r/20190918183552.28959-3-TheSven73@gmail.comSigned-off-by:
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Sven Van Asbroeck authored
Remove two unused static const strings - a leftover from a previous stage. Interestingly, neither gcc nor sparse warned about their presence. Signed-off-by:
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Adham Abozaeid authored
If rtc_clk is provided from DT, use it and enable it. This is optional. The signal may be hardcoded and no need to be requested, but if DT provides it, use it. Signed-off-by:
Adham Abozaeid <adham.abozaeid@microchip.com> Link: https://lore.kernel.org/r/20190916193701.20755-1-adham.abozaeid@microchip.comSigned-off-by:
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Ajay Singh authored
Make use of RCU list to maintain virtual interfaces instead of an array. The update operation on 'vif' list is less compare to the read operations. Mostly the 'vif' list elements are accessed for the read operation, so RCU list is more suited for this requirement. The shifting of interface index id's during the delete interface is not required. As the firmware only supports 2 interfaces so make use of available free slot index id during add interface. Signed-off-by:
Ajay Singh <ajay.kathat@microchip.com> Link: https://lore.kernel.org/r/20190926151436.27819-3-ajay.kathat@microchip.comSigned-off-by:
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Ajay Singh authored
Move deinitialization of lock during the module remove and the initialization of lock wilc_cfg80211_init(). This to ensure locks are available during module load and gets free during unload. Signed-off-by:
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Ajay Singh authored
Removed unnecessary check to compare vif interface with zeroth index element in vif array. Already the caller takes care of passing the appropriate netdev handler during the del key operation. Signed-off-by:
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Connor Kuehl authored
Inside a nested 'else' block at the beginning of this function is a call that assigns 'psta' to the return value of 'rtw_get_stainfo()'. If 'rtw_get_stainfo()' returns NULL and the flow of control reaches the 'else if' where 'psta' is dereferenced, then we will dereference a NULL pointer. Fix this by checking if 'psta' is not NULL before reading its 'psta->qos_option' data member. Addresses-Coverity: ("Dereference null return value") Signed-off-by:Connor Kuehl <connor.kuehl@canonical.com> Acked-by:
Larry Finger <Larry.Finger@lwfinger.net> Link: https://lore.kernel.org/r/20190926150317.5894-1-connor.kuehl@canonical.comSigned-off-by:
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Michael Straube authored
Function write_cam_from_cache in rtw_wlan_util.c is never used, so remove it. Signed-off-by:
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Colin Ian King authored
There is a block of code that is indented incorrectly, add in the missing tabs. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Reviewed-by:
Quentin Deslandes <quentin.deslandes@itdev.co.uk> Link: https://lore.kernel.org/r/20190927092400.20213-1-colin.king@canonical.comSigned-off-by:
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Colin Ian King authored
The RT_TRACE is indented incorrectly, add in the missing tabs. Signed-off-by:
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Connor Kuehl authored
The local variable 'bcmd_down' is always set to true almost immediately before the do-while's condition is checked. As a result, !bcmd_down evaluates to false which short circuits the logical AND operator meaning that the second operand is never reached and is therefore dead code. Furthermore, the do..while loop may be removed since it will always only execute once because 'bcmd_down' is always set to true, so the !bcmd_down evaluates to false and the loop exits immediately after the first pass. Fix this by removing the loop and its condition variables 'bcmd_down' and 'retry_cnts' While we're in there, also fix some checkpatch.pl suggestions regarding spaces around arithmetic operators like '+' Addresses-Coverity: ("Logically dead code") Signed-off-by: -
Jerry Lin authored
To allow simultaneous support for XO-1 and XO-1.5. This module require GPIO_CS5535 (for 1.0) and ACPI (for 1.5) now. Reported-by:
kbuild test robot <lkp@intel.com> Signed-off-by:
Jerry Lin <wahahab11@gmail.com> Link: https://lore.kernel.org/r/20190925074243.GA24947@compute1Signed-off-by:
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Kefeng Wang authored
As said in commit f2c2cbcc ("powerpc: Use pr_warn instead of pr_warning"), removing pr_warning so all logging messages use a consistent <prefix>_warn style. Let's do it. Cc: Karsten Keil <isdn@linux-pingi.de> Signed-off-by:
Kefeng Wang <wangkefeng.wang@huawei.com> Link: https://lore.kernel.org/r/20190920062544.180997-22-wangkefeng.wang@huawei.comSigned-off-by:
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Navid Emamdoost authored
In rtl8192_tx on error handling path allocated urbs and also skb should be released. Signed-off-by:
Navid Emamdoost <navid.emamdoost@gmail.com> Link: https://lore.kernel.org/r/20190920025137.29407-1-navid.emamdoost@gmail.comSigned-off-by:
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Navid Emamdoost authored
In rtl819xU_tx_cmd if usb_submit_urb fails the allocated memories should be released. Signed-off-by:
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Aliasgar Surti authored
coccicheck reported warning for unnecessary variable used. This patch fixes the same by removing the variable and returning value directly. Signed-off-by:
Aliasgar Surti <aliasgar.surti500@gmail.com> Link: https://lore.kernel.org/r/1568812596-25926-1-git-send-email-aliasgar.surti500@gmail.comSigned-off-by:
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Rohit Sarkar authored
When the number of bytes to be printed exceeds the limit snprintf returns the number of bytes that would have been printed (if there was no truncation). This might cause issues, hence use scnprintf which returns the actual number of bytes printed to buffer always. Signed-off-by:
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Jerry Lin authored
This patch remove model related configuration. Since the module can decide which platform data to use itself base on current running olpc board. Also change module dependency from (GPIO_CS5535 || GPIO_CS5535=n) to (GPIO_CS5535 || ACPI) because original one does not make any sense and module only doing real work when GPIO_CS5535 or ACPI is setted. Remove kernel configurations: - FB_OLPC_DCON_1 - FB_OLPC_DCON_1_5 Signed-off-by:
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Sumera Priyadarsini authored
This patch fixes the function signatures for rtl8192_handle_assoc_response, rtl8192_record_rxdesc_forlateruse, rtl819xusb_process_received_packet and other relevant code blocks to avoid the checkpatch.pl warning: CHECK: Lines should not end with a '(' Signed-off-by:Sumera Priyadarsini <sylphrenadin@gmail.com> Link: https://lore.kernel.org/r/ed06fc34eecd883f02bb9a037522b65c63a5eec4.1568814125.git.sylphrenadin@gmail.comSigned-off-by:
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Sumera Priyadarsini authored
This patch fixes the file r8192U_core.c to avoid the checkpatch.pl warning: CHECK: Alignment should match open parenthesis Signed-off-by:
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Sumera Priyadarsini authored
This patch fixes the file r8192U_core.c to avoid the chechpatch.pl warnings: CHECK: Please don't use multiple blank lines CHECK: Blank lines aren't necessary before a close brace '}' Signed-off-by:
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Rohit Sarkar authored
When the number of bytes to be printed exceeds the limit snprintf returns the number of bytes that would have been printed (if there was no truncation). This might cause issues, hence use scnprintf which returns the actual number of bytes printed to buffer always. Signed-off-by:
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Aurabindo Jayamohanan authored
Make code more readable by using macros defined for initializing struct resource Signed-off-by:
Aurabindo Jayamohanan <mail@aurabindo.in> Link: https://lore.kernel.org/r/20190919113945.13700-1-mail@aurabindo.inSigned-off-by:
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Connor Kuehl authored
This is a self-assignment which is redundant. Fix this by removing the self-assignment. Addresses-Coverity: ("Self assignment") Signed-off-by: -
Michael Straube authored
Remove comparsion to NULL and unnecessary parentheses to avoid line length over 80 characters and follow kernel coding style. Signed-off-by:
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