- 19 Dec, 2017 38 commits
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Vinod Koul authored
SoundWire bus supports read or write register(s) for SoundWire Slave device. sdw_read() and sdw_write() APIs are provided for single register read/write. sdw_nread() and sdw_nwrite() for operations on contiguous registers. Signed-off-by:
Sanyog Kale <sanyog.r.kale@intel.com> Reviewed-by:
Philippe Ombredanne <pombredanne@nexb.com> Acked-By:
Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Reviewed-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
Vinod Koul <vinod.koul@intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Sanyog Kale authored
MIPI SoundWire spec defines standard SoundWire registers mandatory for SoundWire Slave devices, so add them. Signed-off-by:
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Vinod Koul authored
MIPI Discovery And Configuration (DisCo) Specification for SoundWire specifies properties to be implemented for SoundWire Masters and Slaves. The DisCo spec doesn't mandate these properties. However, SDW bus cannot work without knowing these values. The helper functions read the Master and Slave properties. Implementers of Master or Slave drivers can use any of the below three mechanisms: a) Use these APIs here as .read_prop() callback for Master and Slave b) Implement own methods and set those as .read_prop(), but invoke APIs in this file for generic read and override the values with platform specific data c) Implement ones own methods which do not use anything provided here Signed-off-by: -
Vinod Koul authored
A Master adds a SoundWire bus instance which scans the firmware provided for device description. In this patch we scan ACPI namespaces and create SoundWire Slave devices based on ACPI description Signed-off-by:
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Vinod Koul authored
This adds the base SoundWire bus type, bus and driver registration. along with changes to module device table for new SoundWire device type. Signed-off-by:
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Sanyog Kale authored
SoundWire is a new Linux bus which implements a new MIPI bus protocol 'SoundWire'. The summary of SoundWire bus and API is documented in the 'summary' file. Signed-off-by:
Hardik T Shah <hardik.t.shah@intel.com> Reviewed-by:
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Srinivas Kandagatla authored
Add myself as maintainer for slimbus. Signed-off-by:
Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Acked-by:
Bjorn Andersson <bjorn.andersson@linaro.org> Reviwed-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Sagar Dharia authored
Slimbus HW mandates that clock-pause sequence has to be executed before disabling relevant interface and core clocks. Runtime-PM's autosuspend feature is used here to enter/exit low power mode for Qualcomm's Slimbus controller. Autosuspend feature enables driver to avoid changing power-modes too frequently since entering clock-pause is an expensive sequence Signed-off-by:
Sagar Dharia <sdharia@codeaurora.org> Signed-off-by:
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Sagar Dharia authored
This controller driver programs manager, interface, and framer devices for Qualcomm's slimbus HW block. Manager component currently implements logical address setting, and messaging interface. Interface device reports bus synchronization information, and framer device clocks the bus from the time it's woken up, until clock-pause is executed by the manager device. Signed-off-by:
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Sagar Dharia authored
This patch add device tree bindings for Qualcomm slimbus controller. Signed-off-by:
Rob Herring <robh@kernel.org> Reviwed-by:
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Srinivas Kandagatla authored
This patch adds some common constant defines which are required for qcom slim controller driver. Signed-off-by:
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Srinivas Kandagatla authored
This patch adds support to read/write SLIMbus value elements. Currently it only supports byte read/write. Adding this support in regmap would give codec drivers more flexibility when there are more than 2 control interfaces like SLIMbus, i2c. Without this patch each codec driver has to directly call SLIMbus value element apis, and this could would get messy once we want to add i2c interface to it. Signed-off-by:
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Sagar Dharia authored
Per SLIMbus specification, a reconfiguration sequence known as 'clock pause' needs to be broadcast over the bus while entering low- power mode. Clock-pause is initiated by the controller driver. To exit clock-pause, controller typically wakes up the framer device. Since wakeup precedure is controller-specific, framework calls it via controller's function pointer to invoke it. Signed-off-by:
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Sagar Dharia authored
SLIMbus devices use value-element, and information elements to control device parameters (e.g. value element is used to represent gain for codec, information element is used to represent interrupt status for codec when codec interrupt fires). Messaging APIs are used to set/get these value and information elements. SLIMbus specification uses 8-bit "transaction IDs" for messages where a read-value is anticipated. Framework uses a table of pointers to store those TIDs and responds back to the caller in O(1). Caller can do synchronous and asynchronous reads/writes. Signed-off-by:
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Srinivas Kandagatla authored
This patch adds support to parse slim devices from device tree. Signed-off-by:
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Sagar Dharia authored
This patch adds support to slim controllers in the slim core, including some utility functions invoked by the controller and slim device drivers. Signed-off-by:
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Sagar Dharia authored
SLIMbus (Serial Low Power Interchip Media Bus) is a specification developed by MIPI (Mobile Industry Processor Interface) alliance. SLIMbus is a 2-wire implementation, which is used to communicate with peripheral components like audio-codec. SLIMbus uses Time-Division-Multiplexing to accommodate multiple data channels, and control channel. Control channel has messages to do device-enumeration, messages to send/receive control-data to/from SLIMbus devices, messages for port/channel management, and messages to do bandwidth allocation. The framework supports multiple instances of the bus (1 controller per bus), and multiple slave devices per controller. This patch adds support to basic silmbus core which includes support to SLIMbus type, slimbus device registeration and some basic data structures. Signed-off-by:
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Sagar Dharia authored
SLIMbus (Serial Low Power Interchip Media Bus) is a specification developed by MIPI (Mobile Industry Processor Interface) alliance. SLIMbus is a 2-wire implementation, which is used to communicate with peripheral components like audio-codec. This patch adds device tree bindings for the slimbus. Signed-off-by:
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Sagar Dharia authored
SLIMbus (Serial Low Power Interchip Media Bus) is a specification developed by MIPI (Mobile Industry Processor Interface) alliance. SLIMbus is a 2-wire implementation, which is used to communicate with peripheral components like audio-codec. The summary of SLIMbus and API is documented in the 'summary' file. Signed-off-by:
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Uwe Kleine-König authored
Maintenance is split between Gavin who works for Eckelmann and so has the functional authority, knows the background and history of this bus system and me who designed most of the actual code with the old microcontroller code as reference. Acked-by:
Gavin Schenk <g.schenk@eckelmann.de> Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by:
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Uwe Kleine-König authored
This bus driver uses GPIOs to control the four SIOX bus lines. Acked-by:
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Uwe Kleine-König authored
Implement tracing for SIOX. There are events for the data that is written to the bus and for data being read from it. Acked-by:
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Guilherme G. Piccoli authored
This is a clean-up patch, no functional changes intended. It removes the unused parameter of type "struct ddcb_requ*" from the functions genwqe_user_vmap() and genwqe_user_vunmap(). Signed-off-by:
Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com> Signed-off-by:
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Guilherme G. Piccoli authored
This is a clean-up patch, no functional changes intended. It makes all defines uppercase, following a "tradition" that helps to make code clearer. Signed-off-by:
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Guilherme G. Piccoli authored
This is a clean-up patch, no functional changes intended. It removes an unused variable from do_execute_ddcb() and also renames the function free_user_pages(), prepending "genwqe" prefix in order to clarify the code. Signed-off-by:
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Finley Xiao authored
This adds the necessary data for handling eFuse on the rk3328. Signed-off-by:
Finley Xiao <finley.xiao@rock-chips.com> Acked-by:
Heiko Stuebner <heiko@sntech.de> Signed-off-by:
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Finley Xiao authored
The eFuse size is defined in property <reg> before, but the length of registers is not equal to the size on some platforms, so we add a new property to redefine it. Signed-off-by:
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Kunihiko Hayashi authored
The efuse on UniPhier allows 8bit access according to the specification. Since bit offset of nvmem is limited to 0-7, it is desiable to change access unit of nvmem to 8bit. Signed-off-by:
Kunihiko Hayashi <hayashi.kunihiko@socionext.com> Signed-off-by:
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Heiner Kallweit authored
Switch to more generic device_property_present to consider also non-DT properties. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:
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Heiner Kallweit authored
If the caller doesn't set stride and/or word_size in struct nvmem_config then nvmem_register accepts this but we may face strange effects later due to both values being 0. Therefore use 1 as default for both values. Signed-off-by:
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Lukas Wunner authored
No need to reinvent the wheel, we have bus_find_device_by_name(). Signed-off-by:
Lukas Wunner <lukas@wunner.de> Signed-off-by:
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Xiongwei Song authored
The function binder_alloc_new_buf_locked() is only used in this file, so make it static. Also clean up sparse warning: drivers/android/binder_alloc.c:330:23: warning: no previous prototype for ‘binder_alloc_new_buf_locked’ [-Wmissing-prototypes] In addition, the line of the function name exceeds 80 characters when add static for this function, hence indent its arguments anew. Signed-off-by:
Xiongwei Song <sxwjean@gmail.com> Signed-off-by:
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Colin Ian King authored
Trivial fix to spelling mistake in dev_dbg debug message. Also add in a missing comma. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Pravin Shedge authored
These duplicate includes have been found with scripts/checkincludes.pl but they have been removed manually to avoid removing false positives. Signed-off-by:
Pravin Shedge <pravin.shedge4linux@gmail.com> Signed-off-by:
Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by:
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Robert Walker authored
The CoreSight TPIU should be disabled when tracing to other sinks to allow them to operate at full bandwidth. This patch fixes tpiu_disable_hw() to correctly disable the TPIU by configuring the TPIU to stop on flush, initiating a manual flush, waiting for the flush to complete and then waits for the TPIU to indicate it has stopped. Signed-off-by:
Robert Walker <robert.walker@arm.com> Tested-by:
Mike Leach <mike.leach@linaro.org> Signed-off-by:
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Vasyl Gomonovych authored
Fix ptr_ret.cocci warnings: drivers/hwtracing/coresight/coresight-tpiu.c:163:1-3: WARNING: PTR_ERR_OR_ZERO can be used drivers/hwtracing/coresight/coresight-funnel.c:217:1-3: WARNING: PTR_ERR_OR_ZERO can be used drivers/hwtracing/coresight/coresight-dynamic-replicator.c:166:1-3: WARNING: PTR_ERR_OR_ZERO can be used Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR Generated by: scripts/coccinelle/api/ptr_ret.cocci Signed-off-by:
Vasyl Gomonovych <gomonovych@gmail.com> Signed-off-by:
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Lukas Wunner authored
No need to reinvent the wheel, we have bus_find_device_by_name(). Signed-off-by:
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Uwe Kleine-König authored
SIOX is a bus system invented at Eckelmann AG to control their building management and refrigeration systems. Traditionally the bus was implemented on custom microcontrollers, today Linux based machines are in use, too. The topology on a SIOX bus looks as follows: ,------->--DCLK-->---------------+----------------------. ^ v v ,--------. ,----------------------. ,------ | | | ,--------------. | | | |--->--DOUT-->---|->-|shift register|->-|--->---| | | | `--------------' | | | master | | device | | device | | | ,--------------. | | | |---<--DIN---<---|-<-|shift register|-<-|---<---| | | | `--------------' | | `--------' `----------------------' `------ v ^ ^ `----------DLD-------------------+----------------------' There are two control lines (DCLK and DLD) driven from the bus master to all devices in parallel and two daisy chained data lines, one for input and one for output. DCLK is the clock to shift both chains by a single bit. On an edge of DLD the devices latch both their input and output shift registers. This patch adds a framework for this bus type. Acked-by:
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- 18 Dec, 2017 2 commits
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Hans de Goede authored
This commit adds a driver for the Virtual Box Guest PCI device used in Virtual Box virtual machines. Enabling this driver will add support for Virtual Box Guest integration features such as copy-and-paste, seamless mode and OpenGL pass-through. This driver also offers vboxguest IPC functionality which is needed for the vboxfs driver which offers folder sharing support. Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Reviewed-by:
Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by:
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Hans de Goede authored
This commits adds a header describing the hardware interface for the Virtual Box Guest PCI device used in Virtual Box virtual machines and utility functions for talking to the Virtual Box hypervisor over this interface. These utility functions will used both by the vboxguest driver for the PCI device which offers the /dev/vboxguest ioctl API and by the vboxfs driver which offers folder sharing support. Signed-off-by:
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