- 24 Jul, 2018 2 commits
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Tomas Winkler authored
Cleanup conversions between slots and data. Define MEI_SLOT_SIZE instead of using 4 or sizeof(u32) across the source code. Signed-off-by:
Tomas Winkler <tomas.winkler@intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Greg Kroah-Hartman authored
Merge tag 'fsi-updates-2018-07-24' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/linux-fsi into char-misc-testing Ben writes: This adds support for offloading the FSI low level bitbanging to the ColdFire coprocessor of the Aspeed SoCs. All the pre-requisites have already been merged, this is the final piece in the puzzle. This branch also pull gpio/ib-aspeed which is a topic branch already in gpio/for-next (and thus in next) whic contains pre-requisites. Finally, there's also a bug fix to the sbefifo driver for some inconsistent use of a mutex in the error handling code.
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- 23 Jul, 2018 7 commits
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Benjamin Herrenschmidt authored
They get retrieved from the device-tree and exposed as an attribute in sysfs Signed-off-by:Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Benjamin Herrenschmidt authored
This represents a physical chip in the system and allows a stable numbering scheme to be passed to udev for userspace to recognize which chip is which. Signed-off-by:
Rob Herring <robh@kernel.org>
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Benjamin Herrenschmidt authored
Some of the exit path missed the unlock. Move the mutex to an outer function to avoid the problem completely Signed-off-by: -
Benjamin Herrenschmidt authored
The Aspeed AST2x00 can contain a ColdFire v1 coprocessor which is currently unused on OpenPower systems. This adds an alternative to the fsi-master-gpio driver that uses that coprocessor instead of bit banging from the ARM core itself. The end result is about 4 times faster. The firmware for the coprocessor and its source code can be found at https://github.com/ozbenh/cf-fsi and is system specific. Signed-off-by:
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Benjamin Herrenschmidt authored
This isn't per-se a real device, it's a pseudo-device that represents the use of the Aspeed built-in ColdFire to implement the FSI protocol by bitbanging the GPIOs instead of doing it from the ARM core. Thus it's a drop-in replacement for the existing fsi-master-gpio pseudo-device for use on systems based on the Aspeed chips. It has most of the same properties, plus some more needed to operate the coprocessor. Signed-off-by:
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Benjamin Herrenschmidt authored
There are still quite a few cases where a device might want to get to a different node of the device-tree, obtain the resources and map them. We have of_iomap() and of_io_request_and_map() but they both have shortcomings, such as not returning the size of the resource found (which can be useful) and not being "managed". This adds a devm_of_iomap() that provides all of these and should probably replace uses of the above in most drivers. Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Reviewed-by:
Joel Stanley <joel@jms.id.au>
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Benjamin Herrenschmidt authored
Merge the GPIO tree "ib-aspeed" topic branch which contains pre-requisites for subsequent changes. This branch is also in gpio "next".
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- 21 Jul, 2018 4 commits
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Stephen Hemminger authored
For those without any license text present or short reference to GPL, add SPDX tag. Signed-off-by:
Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by:
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Hailong Liu authored
uio_mmap has multiple fail paths to set return value to nonzero then goto out. However, it always returns *0* from the *out* at end, and this will mislead callers who check the return value of this function. Fixes: 57c5f4df ("uio: fix crash after the device is unregistered") CC: Xiubo Li <xiubli@redhat.com> Signed-off-by:
Hailong Liu <liu.hailong6@zte.com.cn> Cc: stable <stable@vger.kernel.org> Signed-off-by:
Jiang Biao <jiang.biao2@zte.com.cn> Signed-off-by:
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Stephen Hemminger authored
Replace short statement in comment with proper SPDX license tag. Signed-off-by:
Stephen Hemminger <stephen@networkplumber.org> Signed-off-by:
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Greg Kroah-Hartman authored
Merge tag 'extcon-next-for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next Chanwoo writes: Update extcon for 4.19 Detailed description for this pull request: 1. Release locking when sending the connector state in extcon_sync() - Previously, extcon used the spinlock before calling the notifier_call_chain to prevent the scheduled out of task and to prevent the notification delay. When spinlock is locked for sending the notification, deadlock issue occured on the side of extcon consumer device. To fix this issue on extcon consumer device, release locking when sending the connector state. 2. Fix minor issues of extcon provider driver - extcon-intel-int3496.c uses 'linux/gpio/consumer.h' instead of 'linux/gpio.h' - extcon-usbc-cors-ec.c adds SPDX license and fix the wrong license information
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- 16 Jul, 2018 8 commits
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Sudeep Holla authored
Instead of checking the return value of platform_get_resource(), we can use devm_ioremap_resource() which has the NULL pointer check and the memory region requesting. devm_ioremap_resource is designed to replace calls to devm_request_mem_region followed by devm_ioremap, so let's use the same. Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by:
Sudeep Holla <sudeep.holla@arm.com> Acked-by:
Liviu Dudau <liviu.dudau@arm.com> Signed-off-by:
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Robert Lippert authored
Provides the data bytes snooped over the LPC snoop bus to userspace as a (blocking) misc character device. Bytes output from the host using LPC I/O transactions to the snooped port can be watched or retrieved from the character device using a simple command like this: ~# od -w1 -A n -t x1 /dev/aspeed-lpc-snoop0 10 de ad c0 ff ee Signed-off-by:
Robert Lippert <rlippert@google.com> Signed-off-by:
Patrick Venture <venture@google.com> Signed-off-by:
Benjamin Fair <benjaminfair@google.com> Signed-off-by:
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Tomas Winkler authored
Comparison between signed and unsigned warnings and associated type promotion may cause error condition not be detected. The type promotion issue in mei bus was addressed by two patches: commit b40b3e93 ("mei: bus: type promotion bug in mei_nfc_if_version()") commit cf1ed2c5 ("mei: bus: type promotion bug in mei_fwver()") Now it is possible to suppress the warning, by adding proper casting to move out of radar. Signed-off-by:
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Dan Carpenter authored
The gnss_allocate_device() function returns a mix of NULL and error pointers on error. It should only return one or the other. Since the callers both check for NULL, I've modified it to return NULL on error. Fixes: 2b6a4403 ("gnss: add GNSS receiver subsystem") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Colin Ian King authored
The structure ubx_gserial_ops is local to the source and does not need to be in global scope, so make it static. Cleans up sparse warning: symbol 'ubx_gserial_ops' was not declared. Should it be static? Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Tuomas Tynkkynen authored
Simplifies the code and is more conventional to what's used in the rest of the kernel for debugfs ops. Signed-off-by:
Tuomas Tynkkynen <tuomas@tuxera.com> Reviewed-by:
Amit Shah <amit@kernel.org> Signed-off-by:
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Colin Ian King authored
Variable i is being assigned but is never used hence it is redundant and can be removed. Cleans up clang warning: warning: variable 'i' set but not used [-Wunused-but-set-variable] Signed-off-by:
Martyn Welch <martyn@welchs.me.uk> Signed-off-by:
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Greg Kroah-Hartman authored
We want the char-misc fixes in here as well. Signed-off-by:
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- 15 Jul, 2018 19 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull ARM SoC fixes from Olof Johansson: - A fix for OMAP5 and DRA7 to make the branch predictor hardening settings take proper effect on secondary cores - Disable USB OTG on am3517 since current driver isn't working - Fix thermal sensor register settings on Armada 38x - Fix suspend/resume IRQs on pxa3xx * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: dts: am3517.dtsi: Disable reference to OMAP3 OTG controller ARM: DRA7/OMAP5: Enable ACTLR[0] (Enable invalidates of BTB) for secondary cores ARM: pxa: irq: fix handling of ICMR registers in suspend/resume ARM: dts: armada-38x: use the new thermal binding
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by:
Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by:
Sudip Mukherjee <sudipm.mukherjee@gmail.com> Signed-off-by:
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Julia Lawall authored
Return an error code on failure. Change leading spaces to tab on the first if. Problem found using Coccinelle. Signed-off-by:
Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by:
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Greg Kroah-Hartman authored
When importing the latest copy of the kernel headers into Bionic, Christpher and Elliott noticed that the eventpoll.h casts were not wrapped in (). As it is, clang complains about macros without surrounding (), so this makes it a pain for userspace tools. So fix it up by adding another () pair, and make them line up purty by using tabs. Fixes: 65aaf87b ("add EPOLLNVAL, annotate EPOLL... and event_poll->event") Reported-by:
Christopher Ferris <cferris@google.com> Reported-by:
Elliott Hughes <enh@google.com> Cc: stable <stable@vger.kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Anson Huang authored
i.MX6SLL is a new SoC of i.MX6 family, enable ocotp driver support for this SoC. Signed-off-by:
Anson Huang <Anson.Huang@nxp.com> Signed-off-by:
Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Signed-off-by:
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Anson Huang authored
Add new compatible string for i.MX6SLL SOC. Signed-off-by:
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Freeman Liu authored
This patch add the efuse driver which is embeded in Spreadtrum SC27XX series PMICs. The sc27xx efuse contains 32 blocks and each block's data width is 16 bits. Signed-off-by:
Freeman Liu <freeman.liu@spreadtrum.com> Signed-off-by:
Baolin Wang <baolin.wang@linaro.org> Signed-off-by:
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Baolin Wang authored
This patch adds the binding documentation for Spreadtrum SC27XX series PMICs efuse controller device. Signed-off-by:
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Wu Hao authored
Add entry for FPGA Device Feature List (DFL) drivers. Signed-off-by:
Wu Hao <hao.wu@intel.com> Acked-by:
Alan Tull <atull@kernel.org> Acked-by:
Moritz Fischer <mdf@kernel.org> Signed-off-by:
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Wu Hao authored
DMA memory regions are required for Accelerated Function Unit (AFU) usage. These two ioctls allow user space applications to map user memory regions for dma, and unmap them after use. Iova is returned from driver to user space application via DFL_FPGA_PORT_DMA_MAP ioctl. Application needs to unmap it after use, otherwise, driver will unmap them in device file release operation. Each AFU has its own rb tree to keep track of its mapped DMA regions. Ioctl interfaces: * DFL_FPGA_PORT_DMA_MAP Do the dma mapping per user_addr and length provided by user. Return iova in provided struct dfl_fpga_port_dma_map. * DFL_FPGA_PORT_DMA_UNMAP Unmap the dma region per iova provided by user. Signed-off-by:
Tim Whisonant <tim.whisonant@intel.com> Signed-off-by:
Enno Luebbers <enno.luebbers@intel.com> Signed-off-by:
Shiva Rao <shiva.rao@intel.com> Signed-off-by:
Christopher Rauer <christopher.rauer@intel.com> Signed-off-by:
Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by:
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Xiao Guangrong authored
User Accelerated Function Unit sub feature exposes the MMIO region of the AFU. After valid PR bitstream is programmed and the port is enabled, then this MMIO region could be accessed. This patch adds support to enumerate the AFU MMIO region and expose it to userspace via mmap file operation. Below interfaces are exposed to user: Sysfs interface: * /sys/class/fpga_region/<regionX>/<dfl-port.x>/afu_id Read-only. Indicate which PR bitstream is programmed to this AFU. Ioctl interfaces: * DFL_FPGA_PORT_GET_INFO Provide info to userspace on the number of supported region. Only UAFU region is supported now. * DFL_FPGA_PORT_GET_REGION_INFO Provide region information, including access permission, region size, offset from the start of device fd. Signed-off-by:
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Wu Hao authored
DFL_FPGA_GET_API_VERSION and DFL_FPGA_CHECK_EXTENSION ioctls are common ones which need to be supported by all feature devices drivers including FME and AFU. This patch implements above 2 ioctls in FPGA Accelerated Function Unit (AFU) driver. Signed-off-by:
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Wu Hao authored
The port header register set is always present for port, it is mainly for capability, control and status of the ports that AFU connected to. This patch implements header sub feature support. Below user interfaces are created by this patch. Sysfs interface: * /sys/class/fpga_region/<regionX>/<dfl-port.x>/id Read-only. Port ID. Ioctl interface: * DFL_FPGA_PORT_RESET Reset the FPGA Port and its AFU. Signed-off-by:
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Wu Hao authored
This patch registers the port ops into the global list in the DFL framework, and it allows other modules to use the port ops. And This patch includes the implementation of the get_id and enable_set ops too. Signed-off-by:
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Wu Hao authored
On DFL FPGA devices, the Accelerated Function Unit (AFU), can be reprogrammed for different functions. It connects to the FPGA infrastructure (static FPGA region) via a Port. Port CSRs are implemented separately from the AFU CSRs to provide control and status of the Port. Once valid PR bitstream is programmed into the AFU, it allows access to the AFU CSRs in the AFU MMIO space. This patch only implements basic driver framework for AFU, including device file operation framework. Signed-off-by:
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Wu Hao authored
This patch adds compat_id support, it reuses fme manager's compat id, as the per region compat id is actually from the fme manager's register. Signed-off-by:
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Wu Hao authored
This patch adds fpga region platform driver for FPGA Management Engine. It register an fpga region with given fpga manager / bridge device. Signed-off-by:
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Wu Hao authored
This patch adds fpga bridge platform driver for FPGA Management Engine. It implements the enable_set callback for fpga bridge. Signed-off-by:
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