Implement sdw_master_ops with support for xfer_msg, xfer_msg_defer
and reset_page_addr. Since Cadence module doesn't know the systems
it will be used, set the read_prop to the bus helper.
Signed-off-by: NHardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: NSanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Acked-By: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Cadence IP implements SoundWire Master. Add base cadence library
initialization and interrupt handling
Signed-off-by: NHardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: NSanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Acked-By: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Add status handling API sdw_handle_slave_status() to handle
Slave status changes.
Signed-off-by: NHardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: NSanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Acked-By: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

SoundWire Slaves report status to bus. Add helpers to handle
the status changes.
Signed-off-by: NHardik T Shah <hardik.t.shah@intel.com>
Signed-off-by: NSanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Acked-By: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Acked-By: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

MIPI SoundWire spec defines standard SoundWire registers mandatory for
SoundWire Slave devices, so add them.
Signed-off-by: NSanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Acked-By: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Acked-By: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Acked-By: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSanyog Kale <sanyog.r.kale@intel.com>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Acked-By: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSanyog Kale <sanyog.r.kale@intel.com>
Signed-off-by: NHardik T Shah <hardik.t.shah@intel.com>
Reviewed-by: NPhilippe Ombredanne <pombredanne@nexb.com>
Acked-By: NPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Add myself as maintainer for slimbus.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSagar Dharia <sdharia@codeaurora.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSagar Dharia <sdharia@codeaurora.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch add device tree bindings for Qualcomm slimbus controller.
Signed-off-by: NSagar Dharia <sdharia@codeaurora.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: NRob Herring <robh@kernel.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch adds some common constant defines which are required
for qcom slim controller driver.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSagar Dharia <sdharia@codeaurora.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch adds support to parse slim devices from device tree.
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSagar Dharia <sdharia@codeaurora.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSagar Dharia <sdharia@codeaurora.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: NRob Herring <robh@kernel.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NSagar Dharia <sdharia@codeaurora.org>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviwed-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NGavin Schenk <g.schenk@eckelmann.de>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This bus driver uses GPIOs to control the four SIOX bus lines.
Acked-by: NGavin Schenk <g.schenk@eckelmann.de>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NGavin Schenk <g.schenk@eckelmann.de>
Signed-off-by: NUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NGuilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NGuilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NGuilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This adds the necessary data for handling eFuse on the rk3328.
Signed-off-by: NFinley Xiao <finley.xiao@rock-chips.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NFinley Xiao <finley.xiao@rock-chips.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NKunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Switch to more generic device_property_present to consider also non-DT
properties.
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

No need to reinvent the wheel, we have bus_find_device_by_name().
Signed-off-by: NLukas Wunner <lukas@wunner.de>
Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NXiongwei Song <sxwjean@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Trivial fix to spelling mistake in dev_dbg debug message. Also
add in a missing comma.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

These duplicate includes have been found with scripts/checkincludes.pl but
they have been removed manually to avoid removing false positives.
Signed-off-by: NPravin Shedge <pravin.shedge4linux@gmail.com>
Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NRobert Walker <robert.walker@arm.com>
Tested-by: NMike Leach <mike.leach@linaro.org>
Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

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: NVasyl Gomonovych <gomonovych@gmail.com>
Signed-off-by: NMathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>