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2015-05-24mei: bus: report also uuid in module aliasTomas Winkler9-13/+72
In order to automate modules matching add device uuid which is reported in client enumeration, keep also the name that is needed in for nfc distinguishing radio vendor Report mei:name:uuid Cc: linux-api@vger.kernel.org Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: add also write waiting list to runtime pm blockersTomas Winkler1-3/+5
The io callback is clear from write_waitling_list after we receive interrupt from the hw to ack the write completion. We need to wait for this interrupt deliver before we try to enter low power state Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: request autosuspend at the end of writeAlexander Usyskin1-1/+7
On longer non-blocking write might not complete at the end of autosuspend expiration, therefore we request autosuspend again on the write completion. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: consume flow control on the first chunk of writingAlexander Usyskin1-14/+14
Consume the write flow control on the first chunk of the write instead of on the buffer completion. We can safely assume that the consequent chunks have the flow control granted. This addresses two issues: 1. Blocks other callbacks from the same client riding on the client's flow control and prevents interleaving of messages as FW cannot distinguish between two messages from the same client. 2. Fixes single buffer flow control arbitration in a clean way, without connection/disconnection book keeping Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: debug prints with client info in readAlexander Usyskin1-5/+4
Add client info to debug prints in the read function to ease on debugging efforts. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: txe: fix incorrect indentationTomas Winkler1-1/+1
Remove spurious blank Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: drop iamthif_mtu from device structureAlexander Usyskin2-10/+1
We can receive mtu with one call now, no need to store it. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: connection to fixed address clients from user-spaceAlexander Usyskin3-1/+17
This should be used for debug only. The feaure is gated by "allow_fixed_address" control exposed in debugfs. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: support for fixed address clientsAlexander Usyskin4-19/+68
Fixed address is simplified FW client that doesn't require connection and doesn't support flow control. So it can be only one host client per fixed FW client. Fixed client access is available only for drivers on mei bus, connection from user-space is blocked. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: fix flow control for single buffer clientsAlexander Usyskin2-6/+27
For ME clients that use single receiving buffer the driver tracks credentials on mei_me_clients structure for all connections. The driver needs to book keep the shared resource correctly and track the connections, particularly the credit has to be cleaned when there is no active connection to a particular me client. This solves issue when subsequent connection will not get an ill impression that it can write. We add active connection counter the particular ME client and when the counter reach zero, we clear the credits. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: add a reference from the host client to the me clientAlexander Usyskin11-179/+225
Keep a pointer to associated me client in the host client object to eliminate me client searches. Check if the me client is active in the firmware by checking if its is linked on the me clients list Add accessors for the me client properties from host client. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: revamp client connectionTomas Winkler4-66/+83
Simplify connect state machine by changing the logic around Connection request in progress - only check if we have a callback in relevant queue. Extract common code into mei_cl_send_connect() function Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: revamp client disconnection flowTomas Winkler7-96/+134
Split disconnected state into two parts first reception disconnect response from the firmware and second actually setting of disconnected state. Book keeping data are needed for processing and after firmware disconnected the client and are cleaned when setting the disconnected state in mei_cl_set_disconneted() function. Add mei_cl_send_disconnect to reduce code duplication. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24mei: txe: reduce suspend/resume timeTomas Winkler1-10/+10
HW has to be in known state before the initialisation sequence is started. The polling step for settling aliveness was set to 200ms while in practise this can be done in up to 30msecs. Cc: <stable@vger.kernel.org> #3.18+ Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Barak Yoresh <barak.yoresh@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: replicator: Add Qualcomm CoreSight Replicator driverPratik Patel4-0/+224
This driver manages Qualcomm CoreSight Replicator device, which resides on the AMBA bus. Replicator has been made programmable to allow software to turn of the replicator branch to sink that is not being used. This avoids trace traffic to the unused/non-current sink from causing back pressure that results in overflows at the source. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: fix typo in of_coresight.cPankaj Dubey1-1/+1
fixes obvious typo in of_coresight.c %s/non-configuable/non-configurable Signed-off-by: Pankaj Dubey <pankaj.dubey@samsung.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: document the bindings for the ATCLKLinus Walleij1-5/+8
Put in a blurb in the device tree bindings indicating that coresight blocks may have an optional ATCLK. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: replicator: retrieve and handle atclkLinus Walleij1-4/+67
As can be seen from the datasheet of the CoreSight Components, DDI0314 table A-4 the funnel has a clock signal apart from the AHB interconnect ("amba_pclk", that we're already handling) called ATCLK, ARM Trace Clock, that SoC implementers may provide from an entirely different clock source. So to model this correctly create an optional path for handling ATCLK alongside the PCLK so we don't break old platforms that only define PCLK ("amba_pclk") but still makes it possible for SoCs that have both clock signals (such as the DB8500) to fetch and prepare/enable/disable/ unprepare both clocks. The ATCLK is enabled and disabled using the runtime PM callbacks. As the replicator is a platform device, the code is a bit different from the other CoreSight components and the bus core does not activate runtime PM by default, so we need a few extra calls. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: funnel: retrieve and handle atclkLinus Walleij1-0/+37
As can be seen from the datasheet of the CoreSight Components, DDI0314 table A-6 the funnel has a clock signal apart from the AHB interconnect ("amba_pclk", that we're already handling) called ATCLK, ARM Trace Clock, that SoC implementers may provide from an entirely different clock source. So to model this correctly create an optional path for handling ATCLK alongside the PCLK so we don't break old platforms that only define PCLK ("amba_pclk") but still makes it possible for SoCs that have both clock signals (such as the DB8500) to fetch and prepare/enable/disable/ unprepare both clocks. The ATCLK is enabled and disabled using the runtime PM callbacks. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: etb: retrieve and handle atclkLinus Walleij1-0/+37
As can be seen from the datasheet of the CoreSight Components, DDI0314 table A-8 the ETB has a clock signal apart from the AHB interconnect ("amba_pclk", that we're already handling) called ATCLK, ARM Trace Clock, that SoC implementers may provide from an entirely different clock source. So to model this correctly create an optional path for handling ATCLK alongside the PCLK so we don't break old platforms that only define PCLK ("amba_pclk") but still makes it possible for SoCs that have both clock signals (such as the DB8500) to fetch and prepare/enable/disable/ unprepare both clocks. The ATCLK is enabled and disabled using the runtime PM callbacks. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: tpiu: retrieve and handle atclkLinus Walleij1-0/+37
As can be seen from the datasheet of the CoreSight Components, DDI0314H page A-19 the TPIU has a clock signal apart from the AHB interconnect ("amba_pclk", that we're already handling) called ATCLK, ARM Trace Clock, that SoC implementers may provide from an entirely different clock source. So to model this correctly create an optional path for handling ATCLK alongside the PCLK so we don't break old platforms that only define PCLK ("amba_pclk") but still makes it possible for SoCs that have both clock signals (such as the DB8500) to fetch and prepare/enable/disable/ unprepare both clocks in conjunction. The ATCLK is enabled and disabled using the runtime PM callbacks. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: etm: retrieve and handle atclkLinus Walleij2-1/+37
As can be seen from the datasheet of the CoreSight Components, DDI0401C A.1.1 the ETM has a clock signal apart from the AHB interconnect ("amba_pclk", that we're already handling) called ATCLK, ARM Trace Clock, that SoC implementers may provide from an entirely different clock source. So to model this correctly create an optional path for handling ATCLK alongside the PCLK so we don't break old platforms that only define PCLK ("amba_pclk") but still makes it possible for SoCs that have both clock signals (such as the DB8500) to fetch and prepare/enable/disable/ unprepare both clocks. The ATCLK is enabled and disabled using the runtime PM callbacks. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: tmc: let runtime PM handle core clockLinus Walleij1-23/+8
This uses runtime PM to manage the PCLK ("amba_pclk") instead of screwing around with the framework by going in and taking a copy from the amba device. The amba bus core will unprepare and disable the clock when the device is unused when CONFIG_PM is selected, else the clock will be always on. Prior to this patch, as the AMBA primecell bus code enables the PCLK, it would be left on after probe as the clk_prepare_enable() and clk_disable_unprepare() was called and thus just increase and decreas the refcount by one, without it reaching zero and actually disabling the clock. Now the runtime PM callbacks will make sure the PCLK is properly disabled after probe. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: funnel: let runtime PM handle core clockLinus Walleij1-17/+7
This uses runtime PM to manage the PCLK ("amba_pclk") instead of screwing around with the framework by going in and taking a copy from the amba device. The amba bus core will unprepare and disable the clock when the device is unused when CONFIG_PM is selected, else the clock will be always on. Prior to this patch, as the AMBA primecell bus code enables the PCLK, it would be left on after probe as clk_disable_unprepare() was not called. Now the runtime PM callbacks will make sure the PCLK is properly disabled after probe. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: etb: let runtime PM handle core clockLinus Walleij1-26/+9
This uses runtime PM to manage the PCLK ("amba_pclk") instead of screwing around with the framework by going in and taking a copy from the amba device. The amba bus core will unprepare and disable the clock when the device is unused when CONFIG_PM is selected, else the clock will be always on. Prior to this patch, as the AMBA primecell bus code enables the PCLK, it would be left on after probe as the clk_prepare_enable() and clk_disable_unprepare() was called and thus just increase and decreas the refcount by one, without it reaching zero and actually disabling the clock. Now the runtime PM callbacks will make sure the PCLK is properly disabled after probe. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: tpiu: let runtime PM handle core clockLinus Walleij1-17/+4
This uses runtime PM to manage the PCLK ("amba_pclk") instead of screwing around with the framework by going in and taking a copy from the amba device. The amba bus core will unprepare and disable the clock when the device is unused when CONFIG_PM is selected, else the clock will be always on. Prior to this patch, as the AMBA primecell bus code enables the PCLK, it would be left on after probe as the clk_prepare_enable() and clk_disable_unprepare() was called and thus just increase and decreas the refcount by one, without it reaching zero and actually disabling the clock. Now the runtime PM callbacks will make sure the PCLK is properly disabled after probe. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: etm: let runtime PM handle core clockLinus Walleij2-46/+16
This uses runtime PM to manage the PCLK ("amba_pclk") instead of screwing around with the framework by going in and taking a copy from the amba device. The amba bus core will unprepare and disable the clock when the device is unused when CONFIG_PM is selected, else the clock will be always on. Prior to this patch, as the AMBA primecell bus code enables the PCLK, it would be left on after probe as the clk_prepare_enable() and clk_disable_unprepare() was called and thus just increase and decreas the refcount by one, without it reaching zero and actually disabling the clock. Now the runtime PM callbacks will make sure the PCLK is properly disabled after probe. Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: support the TPIU version found in Ux500Linus Walleij1-0/+4
The Ux500 has a PrimeCell version 4B instead of the 3B as supported by the driver, extend the match table to cover this version. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight: etm: print what version of ETM/PTM is detectedLinus Walleij1-1/+5
Helpfully report a bit more about the hardware found in the silicon when matching the AMBA device IDs by using the associated .data pointer in the AMBA match. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm3x: use module_amba_driver to simplify the codeMathieu Poirier1-11/+1
Using function "module_amba_driver()" makes the code simpler by eliminating boilerplate code. Wei Yongjun sent out a set of patches addressing those in all the coresight driver but missed ETMv3. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Read only access to the tracer's ID registersMathieu Poirier2-0/+127
ETM ID registers contain valuable information about the capabilities of the implementation and are very useful when configuring the device for various trace scenarios. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Read only access to the main management registersMathieu Poirier2-1/+129
Having access to the ETMv4 management registers is very useful as they give meaningful information on how the IP block has been configured at synthesis time. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Controls pertaining to the VM ID functionsPratik Patel2-0/+198
Adding sysfs entries to access and configure specifics about the virtual machine ID comparator functions. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Controls pertaining to the context ID functionsPratik Patel2-0/+206
Adding sysfs entries to access and configure specifics about the context ID comparator functions. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Controls pertaining to the selection of resourcesPratik Patel2-0/+87
Adding sysfs entries to control the selection of the resources the trace unit will use as triggers to perform a trace run. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Controls pertaining to the counter functionsPratik Patel2-0/+170
Adding sysfs entries related to the counter functionality, more specifically to set, control and reload the counters. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Controls pertaining to the sequencer functionsPratik Patel2-0/+154
Adding sysfs entries to access the sequencers related registers, more specifically the sequencer state, the sequencer state transition and the sequencer reset control registers. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Controls pertaining to the address comparator functionsPratik Patel2-0/+448
Adding sysfs entries to control the various mode the address comparator registers can enact, i.e, start/top, single, and range. Also supplementing with address comparator types configuration registers access, mandatory to complete the configuration of the comparator functions. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Controls pertaining to the ViewInst registerPratik Patel2-0/+118
Adding sysfs entries to control the ViewInst register's event selector along with secure and non-secure exception level instruction tracing. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Controls pertaining to various configuration optionsPratik Patel2-0/+150
Adding sysfs entries to configure: . global timestamp. . how often trace synchronisation occur. . the threashold value for cycle counting. . branch and broadcasting regions. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Controls pertaining to the reset, mode, pe and eventsPratik Patel2-0/+474
Adding sysfs entries to: . set the tracing entity with default values. . set various mode associated to the tracing entity. . select the processing entity the tracing entity relates to. . select various events of interest. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Controls pertaining to tracer configurationPratik Patel2-0/+179
Tracers can be configured with various options at synthesis time and knowing what resources are available is important for SW configuration purposes. As such adding RO sysfs entries for characteristics related to the tracer implementation. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-24coresight-etm4x: Adding CoreSight ETM4x driverPratik Patel5-0/+1115
This driver manages the CoreSight ETMv4 (Embedded Trace Macrocell) IP block to support HW assisted tracing on ARMv7 and ARMv8 architectures. Signed-off-by: Pratik Patel <pratikp@codeaurora.org> Signed-off-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-18coresight: etb10: Fix check for bogus buffer depthMark Brown1-1/+1
We attempt to sanity check the buffer depth reported by the hardware by making sure it is not less than zero however this check will never be true since the buffer depth is stored in an unsigned integer. Instead change the check to look for the top bit being set which was the intention. Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-18coresight: etb10: Print size of buffer we fail to allocateMark Brown1-1/+4
When we initialise the ETB driver we attempt to allocate a buffer suitable for storing the data buffered in the hardware based on sizing information reported by the hardware. Unfortunately if the hardware is not properly configured (for example if power domains are not set up correctly) then we may read back a nonsensically large value and therefore the allocation will be too big to succeed. Print an error message showing the amount of memory we tried to allocate if the buffer allocation fails to help users diagnose such problems. Normally it is bad practice to print an error message on memory allocation failures since there are verbose core messages reported for this but in this case where the allocation size might be incorrect it is a useful hint. Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-18Linux 4.1-rc4v4.1-rc4Linus Torvalds1-1/+1
2015-05-18watchdog: Fix merge 'conflict'Peter Zijlstra1-5/+15
Two watchdog changes that came through different trees had a non conflicting conflict, that is, one changed the semantics of a variable but no actual code conflict happened. So the merge appeared fine, but the resulting code did not behave as expected. Commit 195daf665a62 ("watchdog: enable the new user interface of the watchdog mechanism") changes the semantics of watchdog_user_enabled, which thereafter is only used by the functions introduced by b3738d293233 ("watchdog: Add watchdog enable/disable all functions"). There further appears to be a distinct lack of serialization between setting and using watchdog_enabled, so perhaps we should wrap the {en,dis}able_all() things in watchdog_proc_mutex. This patch fixes a s2r failure reported by Michal; which I cannot readily explain. But this does make the code internally consistent again. Reported-and-tested-by: Michal Hocko <mhocko@suse.cz> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-05-18Merge tag 'for-linus-20150516' of git://git.infradead.org/linux-mtdLinus Torvalds3-8/+10
Pull MTD fixes from Brian Norris: "Two MTD fixes for 4.1: - readtest: the signal-handling code was clobbering the error codes we should be handling/reporting in this test, rendering it useless. Noticed by Coverity. - the common SPI NOR flash DT binding (merged for 4.1-rc1) is being revised, so let's change that before 4.1 is minted" * tag 'for-linus-20150516' of git://git.infradead.org/linux-mtd: Documentation: dt: mtd: replace "nor-jedec" binding with "jedec, spi-nor" mtd: readtest: don't clobber error reports
2015-05-17Merge tag 'usb-4.1-rc4' of ↵Linus Torvalds38-140/+171
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb Pull USB fixes from Greg KH: "Here are some USB fixes and new device ids for 4.1-rc4. All are pretty minor, and have been in linux-next successfully" * tag 'usb-4.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb-storage: Add NO_WP_DETECT quirk for Lacie 059f:0651 devices Added another USB product ID for ELAN touchscreen quirks. xhci: gracefully handle xhci_irq dead device xhci: Solve full event ring by increasing TRBS_PER_SEGMENT to 256 xhci: fix isoc endpoint dequeue from advancing too far on transaction error usb: chipidea: debug: avoid out of bound read USB: visor: Match I330 phone more precisely USB: pl2303: Remove support for Samsung I330 USB: cp210x: add ID for KCF Technologies PRN device usb: gadget: remove incorrect __init/__exit annotations usb: phy: isp1301: work around tps65010 dependency usb: gadget: serial: fix re-ordering of tx data usb: gadget: hid: Fix static variable usage usb: gadget: configfs: Fix interfaces array NULL-termination usb: gadget: xilinx: fix devm_ioremap_resource() check usb: dwc3: dwc3-omap: correct the register macros
2015-05-17Merge tag 'tty-4.1-rc4' of ↵Linus Torvalds10-34/+64
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial fixes from Greg KH: "Here's some TTY and serial driver fixes for reported issues. All of these have been in linux-next successfully" * tag 'tty-4.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: pty: Fix input race when closing tty/n_gsm.c: fix a memory leak when gsmtty is removed Revert "serial/amba-pl011: Leave the TX IRQ alone when the UART is not open" serial: omap: Fix error handling in probe earlycon: Revert log warnings
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-03 11:44:36 +0300