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Merge branches 'acpica-fixes', 'acpi-video' and 'acpi-processor' 

* acpica-fixes:
  ACPICA / Hardware: Fix old register check in acpi_hw_get_access_bit_width()

* acpi-video:
  ACPI / Thermal / video: fix max_level incorrect value

* acpi-processor:
  ACPI / processor: Avoid reserving IO regions too early
hifive-unleashed-5.1
Rafael J. Wysocki 2016-06-03 22:35:05 +02:00
parent 7f9bef9deb 9f9cd7ee2c 86314751c7
commit 60c07f80b0
9220 changed files with 482630 additions and 189196 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.gitignore vendored
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@ -62,7 +62,7 @@ Module.symvers
/tar-install/
#
# git files that we don't want to ignore even it they are dot-files
# git files that we don't want to ignore even if they are dot-files
#
!.gitignore
!.mailmap

1
.mailmap
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@ -69,6 +69,7 @@ Jean Tourrilhes <jt@hpl.hp.com>
Jeff Garzik <jgarzik@pretzel.yyz.us>
Jens Axboe <axboe@suse.de>
Jens Osterkamp <Jens.Osterkamp@de.ibm.com>
John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
John Stultz <johnstul@us.ibm.com>
<josh@joshtriplett.org> <josh@freedesktop.org>
<josh@joshtriplett.org> <josh@kernel.org>

1
CREDITS
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@ -768,6 +768,7 @@ D: Z85230 driver
D: Former security contact point (please use vendor-sec@lst.de)
D: ex 2.2 maintainer
D: 2.1.x modular sound
D: Assigned major/minor numbers maintainer at lanana.org
S: c/o Red Hat UK Ltd
S: Alexandra House
S: Alexandra Terrace

11
Documentation/ABI/obsolete/sysfs-driver-hid-roccat-savu
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@ -3,9 +3,10 @@ Date: Mai 2012
Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
Description: The mouse can store 5 profiles which can be switched by the
press of a button. A profile is split into general settings and
button settings. buttons holds informations about button layout.
When written, this file lets one write the respective profile
buttons to the mouse. The data has to be 47 bytes long.
button settings. The buttons variable holds information about
button layout. When written, this file lets one write the
respective profile buttons to the mouse. The data has to be
47 bytes long.
The mouse will reject invalid data.
Which profile to write is determined by the profile number
contained in the data.
@ -26,8 +27,8 @@ Date: Mai 2012
Contact: Stefan Achatz <erazor_de@users.sourceforge.net>
Description: The mouse can store 5 profiles which can be switched by the
press of a button. A profile is split into general settings and
button settings. profile holds informations like resolution, sensitivity
and light effects.
button settings. A profile holds information like resolution,
sensitivity and light effects.
When written, this file lets one write the respective profile
settings back to the mouse. The data has to be 43 bytes long.
The mouse will reject invalid data.

9
Documentation/ABI/stable/sysfs-class-ubi
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@ -107,6 +107,15 @@ Contact: Artem Bityutskiy <dedekind@infradead.org>
Description:
Number of physical eraseblocks reserved for bad block handling.
What: /sys/class/ubi/ubiX/ro_mode
Date: April 2016
KernelVersion: 4.7
Contact: linux-mtd@lists.infradead.org
Description:
Contains ASCII "1\n" if the read-only flag is set on this
device, and "0\n" if it is cleared. UBI devices mark themselves
as read-only when they detect an unrecoverable error.
What: /sys/class/ubi/ubiX/total_eraseblocks
Date: July 2006
KernelVersion: 2.6.22

9
Documentation/ABI/testing/sysfs-block-zram
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@ -166,3 +166,12 @@ Description:
The mm_stat file is read-only and represents device's mm
statistics (orig_data_size, compr_data_size, etc.) in a format
similar to block layer statistics file format.
What: /sys/block/zram<id>/debug_stat
Date: July 2016
Contact: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Description:
The debug_stat file is read-only and represents various
device's debugging info useful for kernel developers. Its
format is not documented intentionally and may change
anytime without any notice.

69
Documentation/ABI/testing/sysfs-bus-coresight-devices-etb10
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@ -6,13 +6,6 @@ Description: (RW) Add/remove a sink from a trace path. There can be multiple
source for a single sink.
ex: echo 1 > /sys/bus/coresight/devices/20010000.etb/enable_sink
What: /sys/bus/coresight/devices/<memory_map>.etb/status
Date: November 2014
KernelVersion: 3.19
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) List various control and status registers. The specific
layout and content is driver specific.
What: /sys/bus/coresight/devices/<memory_map>.etb/trigger_cntr
Date: November 2014
KernelVersion: 3.19
@ -22,3 +15,65 @@ Description: (RW) Disables write access to the Trace RAM by stopping the
following the trigger event. The number of 32-bit words written
into the Trace RAM following the trigger event is equal to the
value stored in this register+1 (from ARM ETB-TRM).
What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/rdp
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Defines the depth, in words, of the trace RAM in powers of
2. The value is read directly from HW register RDP, 0x004.
What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/sts
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the ETB status register. The value
is read directly from HW register STS, 0x00C.
What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/rrp
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the ETB RAM Read Pointer register
that is used to read entries from the Trace RAM over the APB
interface. The value is read directly from HW register RRP,
0x014.
What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/rwp
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the ETB RAM Write Pointer register
that is used to sets the write pointer to write entries from
the CoreSight bus into the Trace RAM. The value is read directly
from HW register RWP, 0x018.
What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/trg
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Similar to "trigger_cntr" above except that this value is
read directly from HW register TRG, 0x01C.
What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/ctl
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the ETB Control register. The value
is read directly from HW register CTL, 0x020.
What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/ffsr
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the ETB Formatter and Flush Status
register. The value is read directly from HW register FFSR,
0x300.
What: /sys/bus/coresight/devices/<memory_map>.etb/mgmt/ffcr
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the ETB Formatter and Flush Control
register. The value is read directly from HW register FFCR,
0x304.

13
Documentation/ABI/testing/sysfs-bus-coresight-devices-etm4x
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@ -359,6 +359,19 @@ Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Print the content of the Peripheral ID3 Register
(0xFEC). The value is taken directly from the HW.
What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trcconfig
Date: February 2016
KernelVersion: 4.07
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Print the content of the trace configuration register
(0x010) as currently set by SW.
What: /sys/bus/coresight/devices/<memory_map>.etm/mgmt/trctraceid
Date: February 2016
KernelVersion: 4.07
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Print the content of the trace ID register (0x040).
What: /sys/bus/coresight/devices/<memory_map>.etm/trcidr/trcidr0
Date: April 2015
KernelVersion: 4.01

53
Documentation/ABI/testing/sysfs-bus-coresight-devices-stm 100644
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@ -0,0 +1,53 @@
What: /sys/bus/coresight/devices/<memory_map>.stm/enable_source
Date: April 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Enable/disable tracing on this specific trace macrocell.
Enabling the trace macrocell implies it has been configured
properly and a sink has been identified for it. The path
of coresight components linking the source to the sink is
configured and managed automatically by the coresight framework.
What: /sys/bus/coresight/devices/<memory_map>.stm/hwevent_enable
Date: April 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Provides access to the HW event enable register, used in
conjunction with HW event bank select register.
What: /sys/bus/coresight/devices/<memory_map>.stm/hwevent_select
Date: April 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Gives access to the HW event block select register
(STMHEBSR) in order to configure up to 256 channels. Used in
conjunction with "hwevent_enable" register as described above.
What: /sys/bus/coresight/devices/<memory_map>.stm/port_enable
Date: April 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Provides access to the stimulus port enable register
(STMSPER). Used in conjunction with "port_select" described
below.
What: /sys/bus/coresight/devices/<memory_map>.stm/port_select
Date: April 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Used to determine which bank of stimulus port bit in
register STMSPER (see above) apply to.
What: /sys/bus/coresight/devices/<memory_map>.stm/status
Date: April 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) List various control and status registers. The specific
layout and content is driver specific.
What: /sys/bus/coresight/devices/<memory_map>.stm/traceid
Date: April 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (RW) Holds the trace ID that will appear in the trace stream
coming from this trace entity.

77
Documentation/ABI/testing/sysfs-bus-coresight-devices-tmc
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@ -6,3 +6,80 @@ Description: (RW) Disables write access to the Trace RAM by stopping the
formatter after a defined number of words have been stored
following the trigger event. Additional interface for this
driver are expected to be added as it matures.
What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/rsz
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Defines the size, in 32-bit words, of the local RAM buffer.
The value is read directly from HW register RSZ, 0x004.
What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/sts
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the TMC status register. The value
is read directly from HW register STS, 0x00C.
What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/rrp
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the TMC RAM Read Pointer register
that is used to read entries from the Trace RAM over the APB
interface. The value is read directly from HW register RRP,
0x014.
What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/rwp
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the TMC RAM Write Pointer register
that is used to sets the write pointer to write entries from
the CoreSight bus into the Trace RAM. The value is read directly
from HW register RWP, 0x018.
What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/trg
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Similar to "trigger_cntr" above except that this value is
read directly from HW register TRG, 0x01C.
What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/ctl
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the TMC Control register. The value
is read directly from HW register CTL, 0x020.
What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/ffsr
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the TMC Formatter and Flush Status
register. The value is read directly from HW register FFSR,
0x300.
What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/ffcr
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the TMC Formatter and Flush Control
register. The value is read directly from HW register FFCR,
0x304.
What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/mode
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Shows the value held by the TMC Mode register, which
indicate the mode the device has been configured to enact. The
The value is read directly from the MODE register, 0x028.
What: /sys/bus/coresight/devices/<memory_map>.tmc/mgmt/devid
Date: March 2016
KernelVersion: 4.7
Contact: Mathieu Poirier <mathieu.poirier@linaro.org>
Description: (R) Indicates the capabilities of the Coresight TMC.
The value is read directly from the DEVID register, 0xFC8,

2
Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
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@ -4,7 +4,7 @@ Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
Provides access to the binary "24x7 catalog" provided by the
hypervisor on POWER7 and 8 systems. This catalog lists events
avaliable from the powerpc "hv_24x7" pmu. Its format is
available from the powerpc "hv_24x7" pmu. Its format is
documented here:
https://raw.githubusercontent.com/jmesmon/catalog-24x7/master/hv-24x7-catalog.h

68
Documentation/ABI/testing/sysfs-bus-iio
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@ -1233,7 +1233,7 @@ KernelVersion: 3.4
Contact: linux-iio@vger.kernel.org
Description:
Proximity measurement indicating that some
object is near the sensor, usually be observing
object is near the sensor, usually by observing
reflectivity of infrared or ultrasound emitted.
Often these sensors are unit less and as such conversion
to SI units is not possible. Higher proximity measurements
@ -1255,12 +1255,23 @@ Description:
What: /sys/.../iio:deviceX/in_intensityY_raw
What: /sys/.../iio:deviceX/in_intensityY_ir_raw
What: /sys/.../iio:deviceX/in_intensityY_both_raw
What: /sys/.../iio:deviceX/in_intensityY_uv_raw
KernelVersion: 3.4
Contact: linux-iio@vger.kernel.org
Description:
Unit-less light intensity. Modifiers both and ir indicate
that measurements contains visible and infrared light
components or just infrared light, respectively.
components or just infrared light, respectively. Modifier uv indicates
that measurements contain ultraviolet light components.
What: /sys/.../iio:deviceX/in_uvindex_input
KernelVersion: 4.6
Contact: linux-iio@vger.kernel.org
Description:
UV light intensity index measuring the human skin's response to
different wavelength of sunlight weighted according to the
standardised CIE Erythemal Action Spectrum. UV index values range
from 0 (low) to >=11 (extreme).
What: /sys/.../iio:deviceX/in_intensity_red_integration_time
What: /sys/.../iio:deviceX/in_intensity_green_integration_time
@ -1501,3 +1512,56 @@ Contact: linux-iio@vger.kernel.org
Description:
Raw (unscaled no offset etc.) pH reading of a substance as a negative
base-10 logarithm of hydrodium ions in a litre of water.
What: /sys/bus/iio/devices/iio:deviceX/mount_matrix
What: /sys/bus/iio/devices/iio:deviceX/in_mount_matrix
What: /sys/bus/iio/devices/iio:deviceX/out_mount_matrix
What: /sys/bus/iio/devices/iio:deviceX/in_anglvel_mount_matrix
What: /sys/bus/iio/devices/iio:deviceX/in_accel_mount_matrix
KernelVersion: 4.6
Contact: linux-iio@vger.kernel.org
Description:
Mounting matrix for IIO sensors. This is a rotation matrix which
informs userspace about sensor chip's placement relative to the
main hardware it is mounted on.
Main hardware placement is defined according to the local
reference frame related to the physical quantity the sensor
measures.
Given that the rotation matrix is defined in a board specific
way (platform data and / or device-tree), the main hardware
reference frame definition is left to the implementor's choice
(see below for a magnetometer example).
Applications should apply this rotation matrix to samples so
that when main hardware reference frame is aligned onto local
reference frame, then sensor chip reference frame is also
perfectly aligned with it.
Matrix is a 3x3 unitary matrix and typically looks like
[0, 1, 0; 1, 0, 0; 0, 0, -1]. Identity matrix
[1, 0, 0; 0, 1, 0; 0, 0, 1] means sensor chip and main hardware
are perfectly aligned with each other.
For example, a mounting matrix for a magnetometer sensor informs
userspace about sensor chip's ORIENTATION relative to the main
hardware.
More specifically, main hardware orientation is defined with
respect to the LOCAL EARTH GEOMAGNETIC REFERENCE FRAME where :
* Y is in the ground plane and positive towards magnetic North ;
* X is in the ground plane, perpendicular to the North axis and
positive towards the East ;
* Z is perpendicular to the ground plane and positive upwards.
An implementor might consider that for a hand-held device, a
'natural' orientation would be 'front facing camera at the top'.
The main hardware reference frame could then be described as :
* Y is in the plane of the screen and is positive towards the
top of the screen ;
* X is in the plane of the screen, perpendicular to Y axis, and
positive towards the right hand side of the screen ;
* Z is perpendicular to the screen plane and positive out of the
screen.
Another example for a quadrotor UAV might be :
* Y is in the plane of the propellers and positive towards the
front-view camera;
* X is in the plane of the propellers, perpendicular to Y axis,
and positive towards the starboard side of the UAV ;
* Z is perpendicular to propellers plane and positive upwards.

29
Documentation/ABI/testing/sysfs-bus-mcb 100644
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@ -0,0 +1,29 @@
What: /sys/bus/mcb/devices/mcb:X
Date: March 2016
KernelVersion: 4.7
Contact: Johannes Thumshirn <jth@kernel.org>
Description: Hardware chip or device hosting the MEN chameleon bus
What: /sys/bus/mcb/devices/mcb:X/revision
Date: March 2016
KernelVersion: 4.7
Contact: Johannes Thumshirn <jth@kernel.org>
Description: The FPGA's revision number
What: /sys/bus/mcb/devices/mcb:X/minor
Date: March 2016
KernelVersion: 4.7
Contact: Johannes Thumshirn <jth@kernel.org>
Description: The FPGA's minor number
What: /sys/bus/mcb/devices/mcb:X/model
Date: March 2016
KernelVersion: 4.7
Contact: Johannes Thumshirn <jth@kernel.org>
Description: The FPGA's model number
What: /sys/bus/mcb/devices/mcb:X/name
Date: March 2016
KernelVersion: 4.7
Contact: Johannes Thumshirn <jth@kernel.org>
Description: The FPGA's name

8
Documentation/ABI/testing/sysfs-class-cxl
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@ -233,3 +233,11 @@ Description: read/write
0 = don't trust, the image may be different (default)
1 = trust that the image will not change.
Users: https://github.com/ibm-capi/libcxl
What: /sys/class/cxl/<card>/psl_timebase_synced
Date: March 2016
Contact: linuxppc-dev@lists.ozlabs.org
Description: read only
Returns 1 if the psl timebase register is synchronized
with the core timebase register, 0 otherwise.
Users: https://github.com/ibm-capi/libcxl

10
Documentation/ABI/testing/sysfs-class-stm
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@ -12,3 +12,13 @@ KernelVersion: 4.3
Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Description:
Shows the number of channels per master on this STM device.
What: /sys/class/stm/<stm>/hw_override
Date: March 2016
KernelVersion: 4.7
Contact: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Description:
Reads as 0 if master numbers in the STP stream produced by
this stm device will match the master numbers assigned by
the software or 1 if the stm hardware overrides software
assigned masters.

2
Documentation/ABI/testing/sysfs-driver-hid-picolcd
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@ -39,5 +39,5 @@ Description: Make it possible to adjust defio refresh rate.
Note: As device can barely do 2 complete refreshes a second
it only makes sense to adjust this value if only one or two
tiles get changed and it's not appropriate to expect the application
to flush it's tiny changes explicitely at higher than default rate.
to flush its tiny changes explicitly at higher than default rate.

2
Documentation/ABI/testing/sysfs-firmware-acpi
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@ -169,7 +169,7 @@ Description:
to enable/disable/clear ACPI interrupts in user space, which can be
used to debug some ACPI interrupt storm issues.
Note that only writting to VALID GPE/Fixed Event is allowed,
Note that only writing to VALID GPE/Fixed Event is allowed,
i.e. user can only change the status of runtime GPE and
Fixed Event with event handler installed.

10
Documentation/ABI/testing/sysfs-ibft
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@ -21,3 +21,13 @@ Contact: Konrad Rzeszutek <ketuzsezr@darnok.org>
Description: The /sys/firmware/ibft/ethernetX directory will contain
files that expose the iSCSI Boot Firmware Table NIC data.
Usually this contains the IP address, MAC, and gateway of the NIC.
What: /sys/firmware/ibft/acpi_header
Date: March 2016
Contact: David Bond <dbond@suse.com>
Description: The /sys/firmware/ibft/acpi_header directory will contain files
that expose the SIGNATURE, OEM_ID, and OEM_TABLE_ID fields of the
acpi table header of the iBFT structure. This will allow for
identification of the creator of the table which is useful in
determining quirks associated with some adapters when used in
hardware vs software iscsi initiator mode.

9
Documentation/ABI/testing/sysfs-platform-hidma 100644
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@ -0,0 +1,9 @@
What: /sys/devices/platform/hidma-*/chid
/sys/devices/platform/QCOM8061:*/chid
Date: Dec 2015
KernelVersion: 4.4
Contact: "Sinan Kaya <okaya@cudeaurora.org>"
Description:
Contains the ID of the channel within the HIDMA instance.
It is used to associate a given HIDMA channel with the
priority and weight calls in the management interface.

35
Documentation/ABI/testing/sysfs-platform-usbip-vudc 100644
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@ -0,0 +1,35 @@
What: /sys/devices/platform/usbip-vudc.%d/dev_desc
Date: April 2016
KernelVersion: 4.6
Contact: Krzysztof Opasiak <k.opasiak@samsung.com>
Description:
This file allows to read device descriptor of
gadget driver which is currently bound to this
controller. It is possible to read this file
only if gadget driver is bound, otherwise error
is returned.
What: /sys/devices/platform/usbip-vudc.%d/usbip_status
Date: April 2016
KernelVersion: 4.6
Contact: Krzysztof Opasiak <k.opasiak@samsung.com>
Description:
Current status of the device.
Allowed values:
1 - Device is available and can be exported
2 - Device is currently exported
3 - Fatal error occurred during communication
with peer
What: /sys/devices/platform/usbip-vudc.%d/usbip_sockfd
Date: April 2016
KernelVersion: 4.6
Contact: Krzysztof Opasiak <k.opasiak@samsung.com>
Description:
This file allows to export usb device to
connection peer. It is done by writing to this
file socket fd (as a string for example "8")
associated with a connection to remote peer who
would like to use this device. It is possible to
close the connection by writing -1 instead of
socked fd.

2
Documentation/DocBook/80211.tmpl
View File

@ -75,7 +75,6 @@
<chapter>
<title>Device registration</title>
!Pinclude/net/cfg80211.h Device registration
!Finclude/net/cfg80211.h ieee80211_band
!Finclude/net/cfg80211.h ieee80211_channel_flags
!Finclude/net/cfg80211.h ieee80211_channel
!Finclude/net/cfg80211.h ieee80211_rate_flags
@ -136,6 +135,7 @@
!Finclude/net/cfg80211.h cfg80211_tx_mlme_mgmt
!Finclude/net/cfg80211.h cfg80211_ibss_joined
!Finclude/net/cfg80211.h cfg80211_connect_result
!Finclude/net/cfg80211.h cfg80211_connect_bss
!Finclude/net/cfg80211.h cfg80211_roamed
!Finclude/net/cfg80211.h cfg80211_disconnected
!Finclude/net/cfg80211.h cfg80211_ready_on_channel

6
Documentation/DocBook/crypto-API.tmpl
View File

@ -1936,9 +1936,9 @@ static int test_skcipher(void)
}
req = skcipher_request_alloc(skcipher, GFP_KERNEL);
if (IS_ERR(req)) {
pr_info("could not allocate request queue\n");
ret = PTR_ERR(req);
if (!req) {
pr_info("could not allocate skcipher request\n");
ret = -ENOMEM;
goto out;
}

26
Documentation/DocBook/debugobjects.tmpl
View File

@ -316,8 +316,8 @@
</itemizedlist>
</para>
<para>
The function returns 1 when the fixup was successful,
otherwise 0. The return value is used to update the
The function returns true when the fixup was successful,
otherwise false. The return value is used to update the
statistics.
</para>
<para>
@ -341,8 +341,8 @@
</itemizedlist>
</para>
<para>
The function returns 1 when the fixup was successful,
otherwise 0. The return value is used to update the
The function returns true when the fixup was successful,
otherwise false. The return value is used to update the
statistics.
</para>
<para>
@ -359,7 +359,8 @@
statically initialized object or not. In case it is it calls
debug_object_init() and debug_object_activate() to make the
object known to the tracker and marked active. In this case
the function should return 0 because this is not a real fixup.
the function should return false because this is not a real
fixup.
</para>
</sect1>
@ -376,8 +377,8 @@
</itemizedlist>
</para>
<para>
The function returns 1 when the fixup was successful,
otherwise 0. The return value is used to update the
The function returns true when the fixup was successful,
otherwise false. The return value is used to update the
statistics.
</para>
</sect1>
@ -397,8 +398,8 @@
</itemizedlist>
</para>
<para>
The function returns 1 when the fixup was successful,
otherwise 0. The return value is used to update the
The function returns true when the fixup was successful,
otherwise false. The return value is used to update the
statistics.
</para>
</sect1>
@ -414,8 +415,8 @@
debug bucket.
</para>
<para>
The function returns 1 when the fixup was successful,
otherwise 0. The return value is used to update the
The function returns true when the fixup was successful,
otherwise false. The return value is used to update the
statistics.
</para>
<para>
@ -427,7 +428,8 @@
case. The fixup function should check if this is a legitimate
case of a statically initialized object or not. In this case only
debug_object_init() should be called to make the object known to
the tracker. Then the function should return 0 because this is not
the tracker. Then the function should return false because this
is not
a real fixup.
</para>
</sect1>

3
Documentation/DocBook/device-drivers.tmpl
View File

@ -136,6 +136,8 @@ X!Edrivers/base/interface.c
!Iinclude/linux/seqno-fence.h
!Edrivers/dma-buf/reservation.c
!Iinclude/linux/reservation.h
!Edrivers/dma-buf/sync_file.c
!Iinclude/linux/sync_file.h
!Edrivers/base/dma-coherent.c
!Edrivers/base/dma-mapping.c
</sect1>
@ -233,6 +235,7 @@ X!Isound/sound_firmware.c
!Iinclude/media/v4l2-mediabus.h
!Iinclude/media/v4l2-mem2mem.h
!Iinclude/media/v4l2-of.h
!Iinclude/media/v4l2-rect.h
!Iinclude/media/v4l2-subdev.h
!Iinclude/media/videobuf2-core.h
!Iinclude/media/videobuf2-v4l2.h

53
Documentation/DocBook/gpu.tmpl
View File

@ -1615,12 +1615,23 @@ void intel_crt_init(struct drm_device *dev)
!Pdrivers/gpu/drm/drm_fb_helper.c fbdev helpers
!Edrivers/gpu/drm/drm_fb_helper.c
!Iinclude/drm/drm_fb_helper.h
</sect2>
<sect2>
<title>Framebuffer CMA Helper Functions Reference</title>
!Pdrivers/gpu/drm/drm_fb_cma_helper.c framebuffer cma helper functions
!Edrivers/gpu/drm/drm_fb_cma_helper.c
</sect2>
<sect2>
<title>Display Port Helper Functions Reference</title>
!Pdrivers/gpu/drm/drm_dp_helper.c dp helpers
!Iinclude/drm/drm_dp_helper.h
!Edrivers/gpu/drm/drm_dp_helper.c
</sect2>
<sect2>
<title>Display Port Dual Mode Adaptor Helper Functions Reference</title>
!Pdrivers/gpu/drm/drm_dp_dual_mode_helper.c dp dual mode helpers
!Iinclude/drm/drm_dp_dual_mode_helper.h
!Edrivers/gpu/drm/drm_dp_dual_mode_helper.c
</sect2>
<sect2>
<title>Display Port MST Helper Functions Reference</title>
@ -1671,17 +1682,23 @@ void intel_crt_init(struct drm_device *dev)
!Pdrivers/gpu/drm/drm_crtc.c Tile group
</sect2>
<sect2>
<title>Bridges</title>
<title>Bridges</title>
<sect3>
<title>Overview</title>
<title>Overview</title>
!Pdrivers/gpu/drm/drm_bridge.c overview
</sect3>
<sect3>
<title>Default bridge callback sequence</title>
<title>Default bridge callback sequence</title>
!Pdrivers/gpu/drm/drm_bridge.c bridge callbacks
</sect3>
!Edrivers/gpu/drm/drm_bridge.c
</sect2>
<sect2>
<title>Panel Helper Reference</title>
!Iinclude/drm/drm_panel.h
!Edrivers/gpu/drm/drm_panel.c
!Pdrivers/gpu/drm/drm_panel.c drm panel
</sect2>
</sect1>
<!-- Internals: kms properties -->
@ -1817,7 +1834,7 @@ void intel_crt_init(struct drm_device *dev)
</tr>
<tr>
<td rowspan="42" valign="top" >DRM</td>
<td valign="top" >Generic</td>
<td rowspan="2" valign="top" >Generic</td>
<td valign="top" >“rotation”</td>
<td valign="top" >BITMASK</td>
<td valign="top" >{ 0, "rotate-0" },
@ -1832,6 +1849,13 @@ void intel_crt_init(struct drm_device *dev)
image along the specified axis prior to rotation</td>
</tr>
<tr>
<td valign="top" >“scaling mode”</td>
<td valign="top" >ENUM</td>
<td valign="top" >{ "None", "Full", "Center", "Full aspect" }</td>
<td valign="top" >Connector</td>
<td valign="top" >Supported by: amdgpu, gma500, i915, nouveau and radeon.</td>
</tr>
<tr>
<td rowspan="5" valign="top" >Connector</td>
<td valign="top" >“EDID”</td>
<td valign="top" >BLOB | IMMUTABLE</td>
@ -2068,21 +2092,12 @@ void intel_crt_init(struct drm_device *dev)
<td valign="top" >property to suggest an Y offset for a connector</td>
</tr>
<tr>
<td rowspan="8" valign="top" >Optional</td>
<td valign="top" >“scaling mode”</td>
<td valign="top" >ENUM</td>
<td valign="top" >{ "None", "Full", "Center", "Full aspect" }</td>
<td valign="top" >Connector</td>
<td valign="top" >TBD</td>
</tr>
<tr>
<td rowspan="7" valign="top" >Optional</td>
<td valign="top" >"aspect ratio"</td>
<td valign="top" >ENUM</td>
<td valign="top" >{ "None", "4:3", "16:9" }</td>
<td valign="top" >Connector</td>
<td valign="top" >DRM property to set aspect ratio from user space app.
This enum is made generic to allow addition of custom aspect
ratios.</td>
<td valign="top" >TDB</td>
</tr>
<tr>
<td valign="top" >“dirty”</td>
@ -2153,7 +2168,11 @@ void intel_crt_init(struct drm_device *dev)
<td valign="top" >ENUM</td>
<td valign="top" >{ "Automatic", "Full", "Limited 16:235" }</td>
<td valign="top" >Connector</td>
<td valign="top" >TBD</td>
<td valign="top" >When this property is set to Limited 16:235
and CTM is set, the hardware will be programmed with the
result of the multiplication of CTM by the limited range
matrix to ensure the pixels normaly in the range 0..1.0 are
remapped to the range 16/255..235/255.</td>
</tr>
<tr>
<td valign="top" >“audio”</td>
@ -3334,7 +3353,7 @@ int num_ioctls;</synopsis>
<title>Video BIOS Table (VBT)</title>
!Pdrivers/gpu/drm/i915/intel_bios.c Video BIOS Table (VBT)
!Idrivers/gpu/drm/i915/intel_bios.c
!Idrivers/gpu/drm/i915/intel_bios.h
!Idrivers/gpu/drm/i915/intel_vbt_defs.h
</sect2>
</sect1>

2
Documentation/DocBook/media/dvb/net.xml
View File

@ -15,7 +15,7 @@
that are present on the transport stream. This is done through
<constant>/dev/dvb/adapter?/net?</constant> device node.
The data will be available via virtual <constant>dvb?_?</constant>
network interfaces, and will be controled/routed via the standard
network interfaces, and will be controlled/routed via the standard
ip tools (like ip, route, netstat, ifconfig, etc).</para>
<para> Data types and and ioctl definitions are defined via
<constant>linux/dvb/net.h</constant> header.</para>

38
Documentation/DocBook/media/v4l/compat.xml
View File

@ -2685,10 +2685,6 @@ hardware may support both.</para>
and may change in the future.</para>
<itemizedlist>
<listitem>
<para>Video Output Overlay (OSD) Interface, <xref
linkend="osd" />.</para>
</listitem>
<listitem>
<para>&VIDIOC-DBG-G-REGISTER; and &VIDIOC-DBG-S-REGISTER;
ioctls.</para>
@ -2696,40 +2692,6 @@ ioctls.</para>
<listitem>
<para>&VIDIOC-DBG-G-CHIP-INFO; ioctl.</para>
</listitem>
<listitem>
<para>&VIDIOC-ENUM-DV-TIMINGS;, &VIDIOC-QUERY-DV-TIMINGS; and
&VIDIOC-DV-TIMINGS-CAP; ioctls.</para>
</listitem>
<listitem>
<para>Flash API. <xref linkend="flash-controls" /></para>
</listitem>
<listitem>
<para>&VIDIOC-CREATE-BUFS; and &VIDIOC-PREPARE-BUF; ioctls.</para>
</listitem>
<listitem>
<para>Selection API. <xref linkend="selection-api" /></para>
</listitem>
<listitem>
<para>Sub-device selection API: &VIDIOC-SUBDEV-G-SELECTION;
and &VIDIOC-SUBDEV-S-SELECTION; ioctls.</para>
</listitem>
<listitem>
<para>Support for frequency band enumeration: &VIDIOC-ENUM-FREQ-BANDS; ioctl.</para>
</listitem>
<listitem>
<para>Vendor and device specific media bus pixel formats.
<xref linkend="v4l2-mbus-vendor-spec-fmts" />.</para>
</listitem>
<listitem>
<para>Importing DMABUF file descriptors as a new IO method described
in <xref linkend="dmabuf" />.</para>
</listitem>
<listitem>
<para>Exporting DMABUF files using &VIDIOC-EXPBUF; ioctl.</para>
</listitem>
<listitem>
<para>Software Defined Radio (SDR) Interface, <xref linkend="sdr" />.</para>
</listitem>
</itemizedlist>
</section>

33
Documentation/DocBook/media/v4l/controls.xml
View File

@ -2841,7 +2841,7 @@ for a GOP and keep it below or equal the set bitrate target. Otherwise the rate
overall average bitrate for the stream and keeps it below or equal to the set bitrate. In the first case
the average bitrate for the whole stream will be smaller then the set bitrate. This is caused because the
average is calculated for smaller number of frames, on the other hand enabling this setting will ensure that
the stream will meet tight bandwidth contraints. Applicable to encoders.
the stream will meet tight bandwidth constraints. Applicable to encoders.
</entry>
</row>
<row><entry></entry></row>
@ -4272,13 +4272,6 @@ manually or automatically if set to zero. Unit, range and step are driver-specif
<section id="flash-controls">
<title>Flash Control Reference</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<para>
The V4L2 flash controls are intended to provide generic access
to flash controller devices. Flash controller devices are
@ -4743,14 +4736,6 @@ interface and may change in the future.</para>
<section id="image-source-controls">
<title>Image Source Control Reference</title>
<note>
<title>Experimental</title>
<para>This is an <link
linkend="experimental">experimental</link> interface and may
change in the future.</para>
</note>
<para>
The Image Source control class is intended for low-level
control of image source devices such as image sensors. The
@ -4862,14 +4847,6 @@ interface and may change in the future.</para>
<section id="image-process-controls">
<title>Image Process Control Reference</title>
<note>
<title>Experimental</title>
<para>This is an <link
linkend="experimental">experimental</link> interface and may
change in the future.</para>
</note>
<para>
The Image Process control class is intended for low-level control of
image processing functions. Unlike
@ -4955,14 +4932,6 @@ interface and may change in the future.</para>
<section id="dv-controls">
<title>Digital Video Control Reference</title>
<note>
<title>Experimental</title>
<para>This is an <link
linkend="experimental">experimental</link> interface and may
change in the future.</para>
</note>
<para>
The Digital Video control class is intended to control receivers
and transmitters for <ulink url="http://en.wikipedia.org/wiki/Vga">VGA</ulink>,

2
Documentation/DocBook/media/v4l/dev-raw-vbi.xml
View File

@ -85,7 +85,7 @@ initialize all fields of the &v4l2-vbi-format;
results of <constant>VIDIOC_G_FMT</constant>, and call the
&VIDIOC-S-FMT; ioctl with a pointer to this structure. Drivers return
an &EINVAL; only when the given parameters are ambiguous, otherwise
they modify the parameters according to the hardware capabilites and
they modify the parameters according to the hardware capabilities and
return the actual parameters. When the driver allocates resources at
this point, it may return an &EBUSY; to indicate the returned
parameters are valid but the required resources are currently not

6
Documentation/DocBook/media/v4l/dev-sdr.xml
View File

@ -1,11 +1,5 @@
<title>Software Defined Radio Interface (SDR)</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental"> experimental </link>
interface and may change in the future.</para>
</note>
<para>
SDR is an abbreviation of Software Defined Radio, the radio device
which uses application software for modulation or demodulation. This interface

6
Documentation/DocBook/media/v4l/dev-subdev.xml
View File

@ -1,11 +1,5 @@
<title>Sub-device Interface</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<para>The complex nature of V4L2 devices, where hardware is often made of
several integrated circuits that need to interact with each other in a
controlled way, leads to complex V4L2 drivers. The drivers usually reflect

6
Documentation/DocBook/media/v4l/io.xml
View File

@ -475,12 +475,6 @@ rest should be evident.</para>
<section id="dmabuf">
<title>Streaming I/O (DMA buffer importing)</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<para>The DMABUF framework provides a generic method for sharing buffers
between multiple devices. Device drivers that support DMABUF can export a DMA
buffer to userspace as a file descriptor (known as the exporter role), import a

9
Documentation/DocBook/media/v4l/selection-api.xml
View File

@ -1,13 +1,6 @@
<section id="selection-api">
<title>Experimental API for cropping, composing and scaling</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<title>API for cropping, composing and scaling</title>
<section>
<title>Introduction</title>

6
Documentation/DocBook/media/v4l/subdev-formats.xml
View File

@ -4002,12 +4002,6 @@ see <xref linkend="colorspaces" />.</entry>
<section id="v4l2-mbus-vendor-spec-fmts">
<title>Vendor and Device Specific Formats</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<para>This section lists complex data formats that are either vendor or
device specific.
</para>

6
Documentation/DocBook/media/v4l/vidioc-create-bufs.xml
View File

@ -49,12 +49,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental"> experimental </link>
interface and may change in the future.</para>
</note>
<para>This ioctl is used to create buffers for <link linkend="mmap">memory
mapped</link> or <link linkend="userp">user pointer</link> or <link
linkend="dmabuf">DMA buffer</link> I/O. It can be used as an alternative or in

18
Documentation/DocBook/media/v4l/vidioc-dv-timings-cap.xml
View File

@ -49,14 +49,9 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental"> experimental </link>
interface and may change in the future.</para>
</note>
<para>To query the capabilities of the DV receiver/transmitter applications
can call the <constant>VIDIOC_DV_TIMINGS_CAP</constant> ioctl on a video node
<para>To query the capabilities of the DV receiver/transmitter applications initialize the
<structfield>pad</structfield> field to 0, zero the reserved array of &v4l2-dv-timings-cap;
and call the <constant>VIDIOC_DV_TIMINGS_CAP</constant> ioctl on a video node
and the driver will fill in the structure. Note that drivers may return
different values after switching the video input or output.</para>
@ -65,8 +60,8 @@ queried by calling the <constant>VIDIOC_SUBDEV_DV_TIMINGS_CAP</constant> ioctl
directly on a subdevice node. The capabilities are specific to inputs (for DV
receivers) or outputs (for DV transmitters), applications must specify the
desired pad number in the &v4l2-dv-timings-cap; <structfield>pad</structfield>
field. Attempts to query capabilities on a pad that doesn't support them will
return an &EINVAL;.</para>
field and zero the <structfield>reserved</structfield> array. Attempts to query
capabilities on a pad that doesn't support them will return an &EINVAL;.</para>
<table pgwide="1" frame="none" id="v4l2-bt-timings-cap">
<title>struct <structname>v4l2_bt_timings_cap</structname></title>
@ -145,7 +140,8 @@ return an &EINVAL;.</para>
<row>
<entry>__u32</entry>
<entry><structfield>reserved</structfield>[2]</entry>
<entry>Reserved for future extensions. Drivers must set the array to zero.</entry>
<entry>Reserved for future extensions. Drivers and applications must
set the array to zero.</entry>
</row>
<row>
<entry>union</entry>

11
Documentation/DocBook/media/v4l/vidioc-enum-dv-timings.xml
View File

@ -49,20 +49,15 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental"> experimental </link>
interface and may change in the future.</para>
</note>
<para>While some DV receivers or transmitters support a wide range of timings, others
support only a limited number of timings. With this ioctl applications can enumerate a list
of known supported timings. Call &VIDIOC-DV-TIMINGS-CAP; to check if it also supports other
standards or even custom timings that are not in this list.</para>
<para>To query the available timings, applications initialize the
<structfield>index</structfield> field and zero the reserved array of &v4l2-enum-dv-timings;
and call the <constant>VIDIOC_ENUM_DV_TIMINGS</constant> ioctl on a video node with a
<structfield>index</structfield> field, set the <structfield>pad</structfield> field to 0,
zero the reserved array of &v4l2-enum-dv-timings; and call the
<constant>VIDIOC_ENUM_DV_TIMINGS</constant> ioctl on a video node with a
pointer to this structure. Drivers fill the rest of the structure or return an
&EINVAL; when the index is out of bounds. To enumerate all supported DV timings,
applications shall begin at index zero, incrementing by one until the

6
Documentation/DocBook/media/v4l/vidioc-enum-freq-bands.xml
View File

@ -49,12 +49,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental"> experimental </link>
interface and may change in the future.</para>
</note>
<para>Enumerates the frequency bands that a tuner or modulator supports.
To do this applications initialize the <structfield>tuner</structfield>,
<structfield>type</structfield> and <structfield>index</structfield> fields,

6
Documentation/DocBook/media/v4l/vidioc-expbuf.xml
View File

@ -49,12 +49,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental"> experimental </link>
interface and may change in the future.</para>
</note>
<para>This ioctl is an extension to the <link linkend="mmap">memory
mapping</link> I/O method, therefore it is available only for
<constant>V4L2_MEMORY_MMAP</constant> buffers. It can be used to export a

10
Documentation/DocBook/media/v4l/vidioc-g-edid.xml
View File

@ -1,6 +1,6 @@
<refentry id="vidioc-g-edid">
<refmeta>
<refentrytitle>ioctl VIDIOC_G_EDID, VIDIOC_S_EDID</refentrytitle>
<refentrytitle>ioctl VIDIOC_G_EDID, VIDIOC_S_EDID, VIDIOC_SUBDEV_G_EDID, VIDIOC_SUBDEV_S_EDID</refentrytitle>
&manvol;
</refmeta>
@ -71,7 +71,8 @@
<para>To get the EDID data the application has to fill in the <structfield>pad</structfield>,
<structfield>start_block</structfield>, <structfield>blocks</structfield> and <structfield>edid</structfield>
fields and call <constant>VIDIOC_G_EDID</constant>. The current EDID from block
fields, zero the <structfield>reserved</structfield> array and call
<constant>VIDIOC_G_EDID</constant>. The current EDID from block
<structfield>start_block</structfield> and of size <structfield>blocks</structfield>
will be placed in the memory <structfield>edid</structfield> points to. The <structfield>edid</structfield>
pointer must point to memory at least <structfield>blocks</structfield>&nbsp;*&nbsp;128 bytes
@ -92,8 +93,9 @@
the driver will set <structfield>blocks</structfield> to 0 and it returns 0.</para>
<para>To set the EDID blocks of a receiver the application has to fill in the <structfield>pad</structfield>,
<structfield>blocks</structfield> and <structfield>edid</structfield> fields and set
<structfield>start_block</structfield> to 0. It is not possible to set part of an EDID,
<structfield>blocks</structfield> and <structfield>edid</structfield> fields, set
<structfield>start_block</structfield> to 0 and zero the <structfield>reserved</structfield> array.
It is not possible to set part of an EDID,
it is always all or nothing. Setting the EDID data is only valid for receivers as it makes
no sense for a transmitter.</para>

8
Documentation/DocBook/media/v4l/vidioc-g-selection.xml
View File

@ -50,12 +50,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental"> experimental </link>
interface and may change in the future.</para>
</note>
<para>The ioctls are used to query and configure selection rectangles.</para>
<para>To query the cropping (composing) rectangle set &v4l2-selection;
@ -222,7 +216,7 @@ or the <structfield>flags</structfield> argument is not valid.</para>
<term><errorcode>ERANGE</errorcode></term>
<listitem>
<para>It is not possible to adjust &v4l2-rect; <structfield>
r</structfield> rectangle to satisfy all contraints given in the
r</structfield> rectangle to satisfy all constraints given in the
<structfield>flags</structfield> argument.</para>
</listitem>
</varlistentry>

6
Documentation/DocBook/media/v4l/vidioc-prepare-buf.xml
View File

@ -48,12 +48,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental"> experimental </link>
interface and may change in the future.</para>
</note>
<para>Applications can optionally call the
<constant>VIDIOC_PREPARE_BUF</constant> ioctl to pass ownership of the buffer
to the driver before actually enqueuing it, using the

6
Documentation/DocBook/media/v4l/vidioc-query-dv-timings.xml
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@ -50,12 +50,6 @@ input</refpurpose>
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental"> experimental </link>
interface and may change in the future.</para>
</note>
<para>The hardware may be able to detect the current DV timings
automatically, similar to sensing the video standard. To do so, applications
call <constant>VIDIOC_QUERY_DV_TIMINGS</constant> with a pointer to a

8
Documentation/DocBook/media/v4l/vidioc-streamon.xml
View File

@ -123,6 +123,14 @@ synchronize with other events.</para>
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><errorcode>ENOLINK</errorcode></term>
<listitem>
<para>The driver implements Media Controller interface and
the pipeline link configuration is invalid.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
</refentry>

6
Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-interval.xml
View File

@ -49,12 +49,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<para>This ioctl lets applications enumerate available frame intervals on a
given sub-device pad. Frame intervals only makes sense for sub-devices that
can control the frame period on their own. This includes, for instance,

6
Documentation/DocBook/media/v4l/vidioc-subdev-enum-frame-size.xml
View File

@ -49,12 +49,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<para>This ioctl allows applications to enumerate all frame sizes
supported by a sub-device on the given pad for the given media bus format.
Supported formats can be retrieved with the &VIDIOC-SUBDEV-ENUM-MBUS-CODE;

6
Documentation/DocBook/media/v4l/vidioc-subdev-enum-mbus-code.xml
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@ -49,12 +49,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<para>To enumerate media bus formats available at a given sub-device pad
applications initialize the <structfield>pad</structfield>, <structfield>which</structfield>
and <structfield>index</structfield> fields of &v4l2-subdev-mbus-code-enum; and

6
Documentation/DocBook/media/v4l/vidioc-subdev-g-fmt.xml
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@ -50,12 +50,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<para>These ioctls are used to negotiate the frame format at specific
subdev pads in the image pipeline.</para>

6
Documentation/DocBook/media/v4l/vidioc-subdev-g-frame-interval.xml
View File

@ -50,12 +50,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<para>These ioctls are used to get and set the frame interval at specific
subdev pads in the image pipeline. The frame interval only makes sense for
sub-devices that can control the frame period on their own. This includes,

6
Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
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@ -49,12 +49,6 @@
<refsect1>
<title>Description</title>
<note>
<title>Experimental</title>
<para>This is an <link linkend="experimental">experimental</link>
interface and may change in the future.</para>
</note>
<para>The selections are used to configure various image
processing functionality performed by the subdevs which affect the
image size. This currently includes cropping, scaling and

12
Documentation/IRQ-domain.txt
View File

@ -70,6 +70,7 @@ of the reverse map types are described below:
==== Linear ====
irq_domain_add_linear()
irq_domain_create_linear()
The linear reverse map maintains a fixed size table indexed by the
hwirq number. When a hwirq is mapped, an irq_desc is allocated for
@ -81,10 +82,16 @@ map are fixed time lookup for IRQ numbers, and irq_descs are only
allocated for in-use IRQs. The disadvantage is that the table must be
as large as the largest possible hwirq number.
irq_domain_add_linear() and irq_domain_create_linear() are functionally
equivalent, except for the first argument is different - the former
accepts an Open Firmware specific 'struct device_node', while the latter
accepts a more general abstraction 'struct fwnode_handle'.
The majority of drivers should use the linear map.
==== Tree ====
irq_domain_add_tree()
irq_domain_create_tree()
The irq_domain maintains a radix tree map from hwirq numbers to Linux
IRQs. When an hwirq is mapped, an irq_desc is allocated and the
@ -95,6 +102,11 @@ since it doesn't need to allocate a table as large as the largest
hwirq number. The disadvantage is that hwirq to IRQ number lookup is
dependent on how many entries are in the table.
irq_domain_add_tree() and irq_domain_create_tree() are functionally
equivalent, except for the first argument is different - the former
accepts an Open Firmware specific 'struct device_node', while the latter
accepts a more general abstraction 'struct fwnode_handle'.
Very few drivers should need this mapping.
==== No Map ===-

5
Documentation/Makefile
View File

@ -1,4 +1,3 @@
subdir-y := accounting auxdisplay blackfin connector \
subdir-y := accounting auxdisplay blackfin \
filesystems filesystems ia64 laptops mic misc-devices \
networking pcmcia prctl ptp timers vDSO video4linux \
watchdog
networking pcmcia prctl ptp timers vDSO watchdog

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style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"
id="tspan3019">Inconsistent Data OK</tspan></text>
<!-- Text -->
<text
xml:space="preserve"
x="7200"
y="1800"
font-style="normal"
font-weight="normal"
font-size="324"
id="text18"
sodipodi:linespacing="125%"
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;fill:#000000;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"><tspan
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"
id="tspan3021">(RCU Works Great!!!)</tspan></text>
<!-- Text -->
<text
xml:space="preserve"
x="7200"
y="3825"
font-style="normal"
font-weight="normal"
font-size="324"
id="text20"
sodipodi:linespacing="125%"
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;fill:#000000;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"><tspan
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"
id="tspan3023">(RCU Works Well)</tspan></text>
<!-- Text -->
<text
xml:space="preserve"
x="7200"
y="3375"
font-style="normal"
font-weight="normal"
font-size="324"
id="text22"
sodipodi:linespacing="125%"
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;fill:#000000;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"><tspan
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"
id="tspan3025">Read-Mostly, Need Consistent Data</tspan></text>
<!-- Text -->
<text
xml:space="preserve"
x="7200"
y="5175"
font-style="normal"
font-weight="normal"
font-size="324"
id="text24"
sodipodi:linespacing="125%"
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;fill:#000000;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"><tspan
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"
id="tspan3027">Read-Write, Need Consistent Data</tspan></text>
<!-- Text -->
<text
xml:space="preserve"
x="7200"
y="6975"
font-style="normal"
font-weight="normal"
font-size="324"
id="text26"
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;fill:#000000;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"
sodipodi:linespacing="125%">Update-Mostly, Need Consistent Data</text>
<!-- Text -->
<text
xml:space="preserve"
x="7200"
y="5625"
font-style="normal"
font-weight="normal"
font-size="324"
id="text28"
sodipodi:linespacing="125%"
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;fill:#000000;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"><tspan
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"
id="tspan3029">(RCU Might Be OK...)</tspan></text>
<!-- Text -->
<text
xml:space="preserve"
x="7200"
y="7875"
font-style="normal"
font-weight="normal"
font-size="324"
id="text30"
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;fill:#000000;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"
sodipodi:linespacing="125%">(1) Provide Existence Guarantees For Update-Friendly Mechanisms</text>
<!-- Text -->
<text
xml:space="preserve"
x="7200"
y="8325"
font-style="normal"
font-weight="normal"
font-size="324"
id="text32"
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;fill:#000000;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"
sodipodi:linespacing="125%">(2) Provide Wait-Free Read-Side Primitives for Real-Time Use)</text>
<!-- Text -->
<text
xml:space="preserve"
x="7200"
y="7425"
font-style="normal"
font-weight="normal"
font-size="324"
id="text34"
style="font-size:427.63009644px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:center;line-height:125%;writing-mode:lr-tb;text-anchor:middle;fill:#000000;font-family:Nimbus Sans L;-inkscape-font-specification:Nimbus Sans L"
sodipodi:linespacing="125%">(RCU is Very Unlikely to be the Right Tool For The Job, But it Can:</text>
</g>
</svg>
Side by Side

Before

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939
Documentation/RCU/Design/Requirements/Requirements.html
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2741
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108
Documentation/RCU/Design/htmlqqz.sh
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@ -1,108 +0,0 @@
#!/bin/sh
#
# Usage: sh htmlqqz.sh file
#
# Extracts and converts quick quizzes in a proto-HTML document file.htmlx.
# Commands, all of which must be on a line by themselves:
#
# "<p>@@QQ@@": Start of a quick quiz.
# "<p>@@QQA@@": Start of a quick-quiz answer.
# "<p>@@QQE@@": End of a quick-quiz answer, and thus of the quick quiz.
# "<p>@@QQAL@@": Place to put quick-quiz answer list.
#
# Places the result in file.html.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, you can access it online at
# http://www.gnu.org/licenses/gpl-2.0.html.
#
# Copyright (c) 2013 Paul E. McKenney, IBM Corporation.
fn=$1
if test ! -r $fn.htmlx
then
echo "Error: $fn.htmlx unreadable."
exit 1
fi
echo "<!-- DO NOT HAND EDIT. -->" > $fn.html
echo "<!-- Instead, edit $fn.htmlx and run 'sh htmlqqz.sh $fn' -->" >> $fn.html
awk < $fn.htmlx >> $fn.html '
state == "" && $1 != "<p>@@QQ@@" && $1 != "<p>@@QQAL@@" {
print $0;
if ($0 ~ /^<p>@@QQ/)
print "Bad Quick Quiz command: " NR " (expected <p>@@QQ@@ or <p>@@QQAL@@)." > "/dev/stderr"
next;
}
state == "" && $1 == "<p>@@QQ@@" {
qqn++;
qqlineno = NR;
haveqq = 1;
state = "qq";
print "<p><a name=\"Quick Quiz " qqn "\"><b>Quick Quiz " qqn "</b>:</a>"
next;
}
state == "qq" && $1 != "<p>@@QQA@@" {
qq[qqn] = qq[qqn] $0 "\n";
print $0
if ($0 ~ /^<p>@@QQ/)
print "Bad Quick Quiz command: " NR ". (expected <p>@@QQA@@)" > "/dev/stderr"
next;
}
state == "qq" && $1 == "<p>@@QQA@@" {
state = "qqa";
print "<br><a href=\"#qq" qqn "answer\">Answer</a>"
next;
}
state == "qqa" && $1 != "<p>@@QQE@@" {
qqa[qqn] = qqa[qqn] $0 "\n";
if ($0 ~ /^<p>@@QQ/)
print "Bad Quick Quiz command: " NR " (expected <p>@@QQE@@)." > "/dev/stderr"
next;
}
state == "qqa" && $1 == "<p>@@QQE@@" {
state = "";
next;
}
state == "" && $1 == "<p>@@QQAL@@" {
haveqq = "";
print "<h3><a name=\"Answers to Quick Quizzes\">"
print "Answers to Quick Quizzes</a></h3>"
print "";
for (i = 1; i <= qqn; i++) {
print "<a name=\"qq" i "answer\"></a>"
print "<p><b>Quick Quiz " i "</b>:"
print qq[i];
print "";
print "</p><p><b>Answer</b>:"
print qqa[i];
print "";
print "</p><p><a href=\"#Quick%20Quiz%20" i "\"><b>Back to Quick Quiz " i "</b>.</a>"
print "";
}
next;
}
END {
if (state != "")
print "Unterminated Quick Quiz: " qqlineno "." > "/dev/stderr"
else if (haveqq)
print "Missing \"<p>@@QQAL@@\", no Quick Quiz." > "/dev/stderr"
}'

6
Documentation/RCU/RTFP.txt
View File

@ -176,13 +176,13 @@ a history of how Linux changed RCU more than RCU changed Linux
which Mathieu Desnoyers is now maintaining [MathieuDesnoyers2009URCU]
[MathieuDesnoyersPhD]. TINY_RCU [PaulEMcKenney2009BloatWatchRCU] made
its appearance, as did expedited RCU [PaulEMcKenney2009expeditedRCU].
The problem of resizeable RCU-protected hash tables may now be on a path
The problem of resizable RCU-protected hash tables may now be on a path
to a solution [JoshTriplett2009RPHash]. A few academic researchers are now
using RCU to solve their parallel problems [HariKannan2009DynamicAnalysisRCU].
2010 produced a simpler preemptible-RCU implementation
based on TREE_RCU [PaulEMcKenney2010SimpleOptRCU], lockdep-RCU
[PaulEMcKenney2010LockdepRCU], another resizeable RCU-protected hash
[PaulEMcKenney2010LockdepRCU], another resizable RCU-protected hash
table [HerbertXu2010RCUResizeHash] (this one consuming more memory,
but allowing arbitrary changes in hash function, as required for DoS
avoidance in the networking code), realization of the 2009 RCU-protected
@ -193,7 +193,7 @@ the RCU API [PaulEMcKenney2010RCUAPI].
[LinusTorvalds2011Linux2:6:38:rc1:NPigginVFS], an RCU-protected red-black
tree using software transactional memory to protect concurrent updates
(strange, but true!) [PhilHoward2011RCUTMRBTree], yet another variant of
RCU-protected resizeable hash tables [Triplett:2011:RPHash], the 3.0 RCU
RCU-protected resizable hash tables [Triplett:2011:RPHash], the 3.0 RCU
trainwreck [PaulEMcKenney2011RCU3.0trainwreck], and Neil Brown's "Meet the
Lockers" LWN article [NeilBrown2011MeetTheLockers]. Some academic
work looked at debugging uses of RCU [Seyster:2011:RFA:2075416.2075425].

10
Documentation/RCU/trace.txt
View File

@ -237,17 +237,17 @@ o "ktl" is the low-order 16 bits (in hexadecimal) of the count of
The output of "cat rcu/rcu_preempt/rcuexp" looks as follows:
s=21872 wd0=0 wd1=0 wd2=0 wd3=5 n=0 enq=0 sc=21872
s=21872 wd1=0 wd2=0 wd3=5 n=0 enq=0 sc=21872
These fields are as follows:
o "s" is the sequence number, with an odd number indicating that
an expedited grace period is in progress.
o "wd0", "wd1", "wd2", and "wd3" are the number of times that an
attempt to start an expedited grace period found that someone
else had completed an expedited grace period that satisfies the
attempted request. "Our work is done."
o "wd1", "wd2", and "wd3" are the number of times that an attempt
to start an expedited grace period found that someone else had
completed an expedited grace period that satisfies the attempted
request. "Our work is done."
o "n" is number of times that a concurrent CPU-hotplug operation
forced a fallback to a normal grace period.

22
Documentation/RCU/whatisRCU.txt
View File

@ -681,22 +681,30 @@ Although RCU can be used in many different ways, a very common use of
RCU is analogous to reader-writer locking. The following unified
diff shows how closely related RCU and reader-writer locking can be.
@@ -5,5 +5,5 @@ struct el {
int data;
/* Other data fields */
};
-rwlock_t listmutex;
+spinlock_t listmutex;
struct el head;
@@ -13,15 +14,15 @@
struct list_head *lp;
struct el *p;
- read_lock();
- read_lock(&listmutex);
- list_for_each_entry(p, head, lp) {
+ rcu_read_lock();
+ list_for_each_entry_rcu(p, head, lp) {
if (p->key == key) {
*result = p->data;
- read_unlock();
- read_unlock(&listmutex);
+ rcu_read_unlock();
return 1;
}
}
- read_unlock();
- read_unlock(&listmutex);
+ rcu_read_unlock();
return 0;
}
@ -732,7 +740,7 @@ Or, for those who prefer a side-by-side listing:
5 int data; 5 int data;
6 /* Other data fields */ 6 /* Other data fields */
7 }; 7 };
8 spinlock_t listmutex; 8 spinlock_t listmutex;
8 rwlock_t listmutex; 8 spinlock_t listmutex;
9 struct el head; 9 struct el head;
1 int search(long key, int *result) 1 int search(long key, int *result)
@ -740,15 +748,15 @@ Or, for those who prefer a side-by-side listing:
3 struct list_head *lp; 3 struct list_head *lp;
4 struct el *p; 4 struct el *p;
5 5
6 read_lock(); 6 rcu_read_lock();
6 read_lock(&listmutex); 6 rcu_read_lock();
7 list_for_each_entry(p, head, lp) { 7 list_for_each_entry_rcu(p, head, lp) {
8 if (p->key == key) { 8 if (p->key == key) {
9 *result = p->data; 9 *result = p->data;
10 read_unlock(); 10 rcu_read_unlock();
10 read_unlock(&listmutex); 10 rcu_read_unlock();
11 return 1; 11 return 1;
12 } 12 }
13 } 13 }
14 read_unlock(); 14 rcu_read_unlock();
14 read_unlock(&listmutex); 14 rcu_read_unlock();
15 return 0; 15 return 0;
16 } 16 }

5
Documentation/accounting/getdelays.c
View File

@ -505,6 +505,8 @@ int main(int argc, char *argv[])
if (!loop)
goto done;
break;
case TASKSTATS_TYPE_NULL:
break;
default:
fprintf(stderr, "Unknown nested"
" nla_type %d\n",
@ -512,7 +514,8 @@ int main(int argc, char *argv[])
break;
}
len2 += NLA_ALIGN(na->nla_len);
na = (struct nlattr *) ((char *) na + len2);
na = (struct nlattr *)((char *)na +
NLA_ALIGN(na->nla_len));
}
break;

65
Documentation/acpi/initrd_table_override.txt
View File

@ -1,5 +1,5 @@
Overriding ACPI tables via initrd
=================================
Upgrading ACPI tables via initrd
================================
1) Introduction (What is this about)
2) What is this for
@ -9,12 +9,14 @@ Overriding ACPI tables via initrd
1) What is this about
---------------------
If the ACPI_INITRD_TABLE_OVERRIDE compile option is true, it is possible to
override nearly any ACPI table provided by the BIOS with an instrumented,
modified one.
If the ACPI_TABLE_UPGRADE compile option is true, it is possible to
upgrade the ACPI execution environment that is defined by the ACPI tables
via upgrading the ACPI tables provided by the BIOS with an instrumented,
modified, more recent version one, or installing brand new ACPI tables.
For a full list of ACPI tables that can be overridden, take a look at
the char *table_sigs[MAX_ACPI_SIGNATURE]; definition in drivers/acpi/osl.c
For a full list of ACPI tables that can be upgraded/installed, take a look
at the char *table_sigs[MAX_ACPI_SIGNATURE]; definition in
drivers/acpi/tables.c.
All ACPI tables iasl (Intel's ACPI compiler and disassembler) knows should
be overridable, except:
- ACPI_SIG_RSDP (has a signature of 6 bytes)
@ -25,17 +27,20 @@ Both could get implemented as well.
2) What is this for
-------------------
Please keep in mind that this is a debug option.
ACPI tables should not get overridden for productive use.
If BIOS ACPI tables are overridden the kernel will get tainted with the
TAINT_OVERRIDDEN_ACPI_TABLE flag.
Complain to your platform/BIOS vendor if you find a bug which is so sever
that a workaround is not accepted in the Linux kernel.
Complain to your platform/BIOS vendor if you find a bug which is so severe
that a workaround is not accepted in the Linux kernel. And this facility
allows you to upgrade the buggy tables before your platform/BIOS vendor
releases an upgraded BIOS binary.
Still, it can and should be enabled in any kernel, because:
- There is no functional change with not instrumented initrds
- It provides a powerful feature to easily debug and test ACPI BIOS table
compatibility with the Linux kernel.
This facility can be used by platform/BIOS vendors to provide a Linux
compatible environment without modifying the underlying platform firmware.
This facility also provides a powerful feature to easily debug and test
ACPI BIOS table compatibility with the Linux kernel by modifying old
platform provided ACPI tables or inserting new ACPI tables.
It can and should be enabled in any kernel because there is no functional
change with not instrumented initrds.
3) How does it work
@ -50,23 +55,31 @@ iasl -d *.dat
# For example add this statement into a _PRT (PCI Routing Table) function
# of the DSDT:
Store("HELLO WORLD", debug)
# And increase the OEM Revision. For example, before modification:
DefinitionBlock ("DSDT.aml", "DSDT", 2, "INTEL ", "TEMPLATE", 0x00000000)
# After modification:
DefinitionBlock ("DSDT.aml", "DSDT", 2, "INTEL ", "TEMPLATE", 0x00000001)
iasl -sa dsdt.dsl
# Add the raw ACPI tables to an uncompressed cpio archive.
# They must be put into a /kernel/firmware/acpi directory inside the
# cpio archive.
# The uncompressed cpio archive must be the first.
# Other, typically compressed cpio archives, must be
# concatenated on top of the uncompressed one.
# They must be put into a /kernel/firmware/acpi directory inside the cpio
# archive. Note that if the table put here matches a platform table
# (similar Table Signature, and similar OEMID, and similar OEM Table ID)
# with a more recent OEM Revision, the platform table will be upgraded by
# this table. If the table put here doesn't match a platform table
# (dissimilar Table Signature, or dissimilar OEMID, or dissimilar OEM Table
# ID), this table will be appended.
mkdir -p kernel/firmware/acpi
cp dsdt.aml kernel/firmware/acpi
# A maximum of: #define ACPI_OVERRIDE_TABLES 10
# tables are currently allowed (see osl.c):
# A maximum of "NR_ACPI_INITRD_TABLES (64)" tables are currently allowed
# (see osl.c):
iasl -sa facp.dsl
iasl -sa ssdt1.dsl
cp facp.aml kernel/firmware/acpi
cp ssdt1.aml kernel/firmware/acpi
# Create the uncompressed cpio archive and concatenate the original initrd
# on top:
# The uncompressed cpio archive must be the first. Other, typically
# compressed cpio archives, must be concatenated on top of the uncompressed
# one. Following command creates the uncompressed cpio archive and
# concatenates the original initrd on top:
find kernel | cpio -H newc --create > /boot/instrumented_initrd
cat /boot/initrd >>/boot/instrumented_initrd
# reboot with increased acpi debug level, e.g. boot params:

2
Documentation/adding-syscalls.txt
View File

@ -136,7 +136,7 @@ an fxyzzy(3) operation for free:
- xyzzyat(fd, "", ..., AT_EMPTY_PATH) is equivalent to fxyzzy(fd, ...)
(For more details on the rationale of the *at() calls, see the openat(2) man
page; for an example of AT_EMPTY_PATH, see the statat(2) man page.)
page; for an example of AT_EMPTY_PATH, see the fstatat(2) man page.)
If your new xyzzy(2) system call involves a parameter describing an offset
within a file, make its type loff_t so that 64-bit offsets can be supported

2
Documentation/arm/SA1100/Assabet
View File

@ -214,7 +214,7 @@ RedBoot scripting
-----------------
All the commands above aren't so useful if they have to be typed in every
time the Assabet is rebooted. Therefore it's possible to automatize the boot
time the Assabet is rebooted. Therefore it's possible to automate the boot
process using RedBoot's scripting capability.
For example, I use this to boot Linux with both the kernel and the ramdisk

4
Documentation/arm64/booting.txt
View File

@ -132,6 +132,10 @@ NOTE: versions prior to v4.6 cannot make use of memory below the
physical offset of the Image so it is recommended that the Image be
placed as close as possible to the start of system RAM.
If an initrd/initramfs is passed to the kernel at boot, it must reside
entirely within a 1 GB aligned physical memory window of up to 32 GB in
size that fully covers the kernel Image as well.
Any memory described to the kernel (even that below the start of the
image) which is not marked as reserved from the kernel (e.g., with a
memreserve region in the device tree) will be considered as available to

2
Documentation/arm64/silicon-errata.txt
View File

@ -53,7 +53,9 @@ stable kernels.
| ARM | Cortex-A57 | #832075 | ARM64_ERRATUM_832075 |
| ARM | Cortex-A57 | #852523 | N/A |
| ARM | Cortex-A57 | #834220 | ARM64_ERRATUM_834220 |
| ARM | MMU-500 | #841119,#826419 | N/A |
| | | | |
| Cavium | ThunderX ITS | #22375, #24313 | CAVIUM_ERRATUM_22375 |
| Cavium | ThunderX GICv3 | #23154 | CAVIUM_ERRATUM_23154 |
| Cavium | ThunderX Core | #27456 | CAVIUM_ERRATUM_27456 |
| Cavium | ThunderX SMMUv2 | #27704 | N/A |

4
Documentation/block/00-INDEX
View File

@ -2,6 +2,8 @@
- This file
biodoc.txt
- Notes on the Generic Block Layer Rewrite in Linux 2.5
biovecs.txt
- Immutable biovecs and biovec iterators
capability.txt
- Generic Block Device Capability (/sys/block/<device>/capability)
cfq-iosched.txt
@ -14,6 +16,8 @@ deadline-iosched.txt
- Deadline IO scheduler tunables
ioprio.txt
- Block io priorities (in CFQ scheduler)
pr.txt
- Block layer support for Persistent Reservations
null_blk.txt
- Null block for block-layer benchmarking.
queue-sysfs.txt

9
Documentation/block/queue-sysfs.txt
View File

@ -141,6 +141,15 @@ control of this block device to that new IO scheduler. Note that writing
an IO scheduler name to this file will attempt to load that IO scheduler
module, if it isn't already present in the system.
write_cache (RW)
----------------
When read, this file will display whether the device has write back
caching enabled or not. It will return "write back" for the former
case, and "write through" for the latter. Writing to this file can
change the kernels view of the device, but it doesn't alter the
device state. This means that it might not be safe to toggle the
setting from "write back" to "write through", since that will also
eliminate cache flushes issued by the kernel.
Jens Axboe <jens.axboe@oracle.com>, February 2009

4
Documentation/block/writeback_cache_control.txt
View File

@ -71,7 +71,7 @@ requests that have a payload. For devices with volatile write caches the
driver needs to tell the block layer that it supports flushing caches by
doing:
blk_queue_flush(sdkp->disk->queue, REQ_FLUSH);
blk_queue_write_cache(sdkp->disk->queue, true, false);
and handle empty REQ_FLUSH requests in its prep_fn/request_fn. Note that
REQ_FLUSH requests with a payload are automatically turned into a sequence
@ -79,7 +79,7 @@ of an empty REQ_FLUSH request followed by the actual write by the block
layer. For devices that also support the FUA bit the block layer needs
to be told to pass through the REQ_FUA bit using:
blk_queue_flush(sdkp->disk->queue, REQ_FLUSH | REQ_FUA);
blk_queue_write_cache(sdkp->disk->queue, true, true);
and the driver must handle write requests that have the REQ_FUA bit set
in prep_fn/request_fn. If the FUA bit is not natively supported the block

26
Documentation/blockdev/zram.txt
View File

@ -59,27 +59,16 @@ num_devices parameter is optional and tells zram how many devices should be
pre-created. Default: 1.
2) Set max number of compression streams
Compression backend may use up to max_comp_streams compression streams,
thus allowing up to max_comp_streams concurrent compression operations.
By default, compression backend uses single compression stream.
Regardless the value passed to this attribute, ZRAM will always
allocate multiple compression streams - one per online CPUs - thus
allowing several concurrent compression operations. The number of
allocated compression streams goes down when some of the CPUs
become offline. There is no single-compression-stream mode anymore,
unless you are running a UP system or has only 1 CPU online.
Examples:
#show max compression streams number
To find out how many streams are currently available:
cat /sys/block/zram0/max_comp_streams
#set max compression streams number to 3
echo 3 > /sys/block/zram0/max_comp_streams
Note:
In order to enable compression backend's multi stream support max_comp_streams
must be initially set to desired concurrency level before ZRAM device
initialisation. Once the device initialised as a single stream compression
backend (max_comp_streams equals to 1), you will see error if you try to change
the value of max_comp_streams because single stream compression backend
implemented as a special case by lock overhead issue and does not support
dynamic max_comp_streams. Only multi stream backend supports dynamic
max_comp_streams adjustment.
3) Select compression algorithm
Using comp_algorithm device attribute one can see available and
currently selected (shown in square brackets) compression algorithms,
@ -183,6 +172,7 @@ mem_limit RW the maximum amount of memory ZRAM can use to store
pages_compacted RO the number of pages freed during compaction
(available only via zram<id>/mm_stat node)
compact WO trigger memory compaction
debug_stat RO this file is used for zram debugging purposes
WARNING
=======

14
Documentation/cgroup-v1/memory.txt
View File

@ -280,17 +280,9 @@ the amount of kernel memory used by the system. Kernel memory is fundamentally
different than user memory, since it can't be swapped out, which makes it
possible to DoS the system by consuming too much of this precious resource.
Kernel memory won't be accounted at all until limit on a group is set. This
allows for existing setups to continue working without disruption. The limit
cannot be set if the cgroup have children, or if there are already tasks in the
cgroup. Attempting to set the limit under those conditions will return -EBUSY.
When use_hierarchy == 1 and a group is accounted, its children will
automatically be accounted regardless of their limit value.
After a group is first limited, it will be kept being accounted until it
is removed. The memory limitation itself, can of course be removed by writing
-1 to memory.kmem.limit_in_bytes. In this case, kmem will be accounted, but not
limited.
Kernel memory accounting is enabled for all memory cgroups by default. But
it can be disabled system-wide by passing cgroup.memory=nokmem to the kernel
at boot time. In this case, kernel memory will not be accounted at all.
Kernel memory limits are not imposed for the root cgroup. Usage for the root
cgroup may or may not be accounted. The memory used is accumulated into

8
Documentation/connector/connector.txt
View File

@ -186,3 +186,11 @@ only cn_test.c test module used it.
Some work in netlink area is still being done, so things can be changed in
2.6.15 timeframe, if it will happen, documentation will be updated for that
kernel.
/*****************************************/
Code samples
/*****************************************/
Sample code for a connector test module and user space can be found
in samples/connector/. To build this code, enable CONFIG_CONNECTOR
and CONFIG_SAMPLES.

34
Documentation/device-mapper/cache-policies.txt
View File

@ -11,7 +11,7 @@ Every bio that is mapped by the target is referred to the policy.
The policy can return a simple HIT or MISS or issue a migration.
Currently there's no way for the policy to issue background work,
e.g. to start writing back dirty blocks that are going to be evicte
e.g. to start writing back dirty blocks that are going to be evicted
soon.
Because we map bios, rather than requests it's easy for the policy
@ -48,7 +48,7 @@ with the multiqueue (mq) policy.
The smq policy (vs mq) offers the promise of less memory utilization,
improved performance and increased adaptability in the face of changing
workloads. SMQ also does not have any cumbersome tuning knobs.
workloads. smq also does not have any cumbersome tuning knobs.
Users may switch from "mq" to "smq" simply by appropriately reloading a
DM table that is using the cache target. Doing so will cause all of the
@ -57,47 +57,45 @@ degrade slightly until smq recalculates the origin device's hotspots
that should be cached.
Memory usage:
The mq policy uses a lot of memory; 88 bytes per cache block on a 64
The mq policy used a lot of memory; 88 bytes per cache block on a 64
bit machine.
SMQ uses 28bit indexes to implement it's data structures rather than
smq uses 28bit indexes to implement it's data structures rather than
pointers. It avoids storing an explicit hit count for each block. It
has a 'hotspot' queue rather than a pre cache which uses a quarter of
has a 'hotspot' queue, rather than a pre-cache, which uses a quarter of
the entries (each hotspot block covers a larger area than a single
cache block).
All these mean smq uses ~25bytes per cache block. Still a lot of
All this means smq uses ~25bytes per cache block. Still a lot of
memory, but a substantial improvement nontheless.
Level balancing:
MQ places entries in different levels of the multiqueue structures
based on their hit count (~ln(hit count)). This means the bottom
levels generally have the most entries, and the top ones have very
few. Having unbalanced levels like this reduces the efficacy of the
mq placed entries in different levels of the multiqueue structures
based on their hit count (~ln(hit count)). This meant the bottom
levels generally had the most entries, and the top ones had very
few. Having unbalanced levels like this reduced the efficacy of the
multiqueue.
SMQ does not maintain a hit count, instead it swaps hit entries with
the least recently used entry from the level above. The over all
smq does not maintain a hit count, instead it swaps hit entries with
the least recently used entry from the level above. The overall
ordering being a side effect of this stochastic process. With this
scheme we can decide how many entries occupy each multiqueue level,
resulting in better promotion/demotion decisions.
Adaptability:
The MQ policy maintains a hit count for each cache block. For a
The mq policy maintained a hit count for each cache block. For a
different block to get promoted to the cache it's hit count has to
exceed the lowest currently in the cache. This means it can take a
exceed the lowest currently in the cache. This meant it could take a
long time for the cache to adapt between varying IO patterns.
Periodically degrading the hit counts could help with this, but I
haven't found a nice general solution.
SMQ doesn't maintain hit counts, so a lot of this problem just goes
smq doesn't maintain hit counts, so a lot of this problem just goes
away. In addition it tracks performance of the hotspot queue, which
is used to decide which blocks to promote. If the hotspot queue is
performing badly then it starts moving entries more quickly between
levels. This lets it adapt to new IO patterns very quickly.
Performance:
Testing SMQ shows substantially better performance than MQ.
Testing smq shows substantially better performance than mq.
cleaner
-------

2
Documentation/device-mapper/statistics.txt
View File

@ -205,7 +205,7 @@ statistics on them:
dmsetup message vol 0 @stats_create - /100
Set the auxillary data string to "foo bar baz" (the escape for each
Set the auxiliary data string to "foo bar baz" (the escape for each
space must also be escaped, otherwise the shell will consume them):
dmsetup message vol 0 @stats_set_aux 0 foo\\ bar\\ baz

84
Documentation/devices.txt
View File

@ -1,20 +1,17 @@
LINUX ALLOCATED DEVICES (2.6+ version)
Maintained by Alan Cox <device@lanana.org>
Last revised: 6th April 2009
LINUX ALLOCATED DEVICES (4.x+ version)
This list is the Linux Device List, the official registry of allocated
device numbers and /dev directory nodes for the Linux operating
system.
The latest version of this list is available from
http://www.lanana.org/docs/device-list/ or
ftp://ftp.kernel.org/pub/linux/docs/device-list/. This version may be
newer than the one distributed with the Linux kernel.
The LaTeX version of this document is no longer maintained.
The LaTeX version of this document is no longer maintained, nor is
the document that used to reside at lanana.org. This version in the
mainline Linux kernel is the master document. Updates shall be sent
as patches to the kernel maintainers (see the SubmittingPatches document).
Specifically explore the sections titled "CHAR and MISC DRIVERS", and
"BLOCK LAYER" in the MAINTAINERS file to find the right maintainers
to involve for character and block devices.
This document is included by reference into the Filesystem Hierarchy
Standard (FHS). The FHS is available from http://www.pathname.com/fhs/.
@ -23,60 +20,33 @@ Allocations marked (68k/Amiga) apply to Linux/68k on the Amiga
platform only. Allocations marked (68k/Atari) apply to Linux/68k on
the Atari platform only.
The symbol {2.6} means the allocation is obsolete and scheduled for
removal once kernel version 2.6 (or equivalent) is released. Some of these
allocations have already been removed.
This document is in the public domain. The author requests, however,
This document is in the public domain. The authors requests, however,
that semantically altered versions are not distributed without
permission of the author, assuming the author can be contacted without
permission of the authors, assuming the authors can be contacted without
an unreasonable effort.
In particular, please don't sent patches for this list to Linus, at
least not without contacting me first.
I do not have any information about these devices beyond what appears
on this list. Any such information requests will be deleted without
reply.
**** DEVICE DRIVERS AUTHORS PLEASE READ THIS ****
Linux now has extensive support for dynamic allocation of device numbering
and can use sysfs and udev (systemd) to handle the naming needs. There are
still some exceptions in the serial and boot device area. Before asking
for a device number make sure you actually need one.
To have a major number allocated, or a minor number in situations
where that applies (e.g. busmice), please contact me with the
appropriate device information. Also, if you have additional
information regarding any of the devices listed below, or if I have
made a mistake, I would greatly appreciate a note.
where that applies (e.g. busmice), please submit a patch and send to
the authors as indicated above.
I do, however, make a few requests about the nature of your report.
This is necessary for me to be able to keep this list up to date and
correct in a timely manner. First of all, *please* send it to the
correct address... <device@lanana.org>. I receive hundreds of email
messages a day, so mail sent to other addresses may very well get lost
in the avalanche. Please put in a descriptive subject, so I can find
your mail again should I need to. Too many people send me email
saying just "device number request" in the subject.
Second, please include a description of the device *in the same format
as this list*. The reason for this is that it is the only way I have
found to ensure I have all the requisite information to publish your
Keep the description of the device *in the same format
as this list*. The reason for this is that it is the only way we have
found to ensure we have all the requisite information to publish your
device and avoid conflicts.
Third, please don't assume that the distributed version of the list is
up to date. Due to the number of registrations I have to maintain it
in "batch mode", so there is likely additional registrations that
haven't been listed yet.
Fourth, remember that Linux now has extensive support for dynamic allocation
of device numbering and can use sysfs and udev to handle the naming needs.
There are still some exceptions in the serial and boot device area. Before
asking for a device number make sure you actually need one.
Finally, sometimes I have to play "namespace police." Please don't be
offended. I often get submissions for /dev names that would be bound
to cause conflicts down the road. I am trying to avoid getting in a
Finally, sometimes we have to play "namespace police." Please don't be
offended. We often get submissions for /dev names that would be bound
to cause conflicts down the road. We are trying to avoid getting in a
situation where we would have to suffer an incompatible forward
change. Therefore, please consult with me *before* you make your
change. Therefore, please consult with us *before* you make your
device names and numbers in any way public, at least to the point
where it would be at all difficult to get them changed.
@ -3099,9 +3069,9 @@ Your cooperation is appreciated.
129 = /dev/ipath_sma Device used by Subnet Management Agent
130 = /dev/ipath_diag Device used by diagnostics programs
234-239 UNASSIGNED
240-254 char LOCAL/EXPERIMENTAL USE
234-254 char RESERVED FOR DYNAMIC ASSIGNMENT
Character devices that request a dynamic allocation of major number will
take numbers starting from 254 and downward.
240-254 block LOCAL/EXPERIMENTAL USE
Allocated for local/experimental use. For devices not

7
Documentation/devicetree/bindings/arc/eznps.txt 100644
View File

@ -0,0 +1,7 @@
EZchip NPS Network Processor Platforms Device Tree Bindings
---------------------------------------------------------------------------
Appliance main board with NPS400 ASIC.
Required root node properties:
- compatible = "ezchip,arc-nps";

50
Documentation/devicetree/bindings/arm/altera/socfpga-eccmgr.txt
View File

@ -3,6 +3,7 @@ This driver uses the EDAC framework to implement the SOCFPGA ECC Manager.
The ECC Manager counts and corrects single bit errors and counts/handles
double bit errors which are uncorrectable.
Cyclone5 and Arria5 ECC Manager
Required Properties:
- compatible : Should be "altr,socfpga-ecc-manager"
- #address-cells: must be 1
@ -47,3 +48,52 @@ Example:
interrupts = <0 178 1>, <0 179 1>;
};
};
Arria10 SoCFPGA ECC Manager
The Arria10 SoC ECC Manager handles the IRQs for each peripheral
in a shared register instead of individual IRQs like the Cyclone5
and Arria5. Therefore the device tree is different as well.
Required Properties:
- compatible : Should be "altr,socfpga-a10-ecc-manager"
- altr,sysgr-syscon : phandle to Arria10 System Manager Block
containing the ECC manager registers.
- #address-cells: must be 1
- #size-cells: must be 1
- interrupts : Should be single bit error interrupt, then double bit error
interrupt. Note the rising edge type.
- ranges : standard definition, should translate from local addresses
Subcomponents:
L2 Cache ECC
Required Properties:
- compatible : Should be "altr,socfpga-a10-l2-ecc"
- reg : Address and size for ECC error interrupt clear registers.
On-Chip RAM ECC
Required Properties:
- compatible : Should be "altr,socfpga-a10-ocram-ecc"
- reg : Address and size for ECC block registers.
Example:
eccmgr: eccmgr@ffd06000 {
compatible = "altr,socfpga-a10-ecc-manager";
altr,sysmgr-syscon = <&sysmgr>;
#address-cells = <1>;
#size-cells = <1>;
interrupts = <0 2 IRQ_TYPE_LEVEL_HIGH>,
<0 0 IRQ_TYPE_LEVEL_HIGH>;
ranges;
l2-ecc@ffd06010 {
compatible = "altr,socfpga-a10-l2-ecc";
reg = <0xffd06010 0x4>;
};
ocram-ecc@ff8c3000 {
compatible = "altr,socfpga-a10-ocram-ecc";
reg = <0xff8c3000 0x90>;
};
};

3
Documentation/devicetree/bindings/arm/amlogic.txt
View File

@ -25,3 +25,6 @@ Board compatible values:
- "tronsmart,vega-s95-pro", "tronsmart,vega-s95" (Meson gxbb)
- "tronsmart,vega-s95-meta", "tronsmart,vega-s95" (Meson gxbb)
- "tronsmart,vega-s95-telos", "tronsmart,vega-s95" (Meson gxbb)
- "hardkernel,odroid-c2" (Meson gxbb)
- "amlogic,p200" (Meson gxbb)
- "amlogic,p201" (Meson gxbb)

8
Documentation/devicetree/bindings/arm/arm-boards
View File

@ -93,6 +93,14 @@ Required nodes:
a core-module with regs and the compatible strings
"arm,core-module-versatile", "syscon"
Optional nodes:
- arm,versatile-ib2-syscon : if the Versatile has an IB2 interface
board mounted, this has a separate system controller that is
defined in this node.
Required properties:
compatible = "arm,versatile-ib2-syscon", "syscon"
ARM RealView Boards
-------------------
The RealView boards cover tailored evaluation boards that are used to explore

65
Documentation/devicetree/bindings/arm/atmel-at91.txt
View File

@ -41,6 +41,10 @@ compatible: must be one of:
- "atmel,sama5d43"
- "atmel,sama5d44"
Chipid required properties:
- compatible: Should be "atmel,sama5d2-chipid"
- reg : Should contain registers location and length
PIT Timer required properties:
- compatible: Should be "atmel,at91sam9260-pit"
- reg: Should contain registers location and length
@ -147,6 +151,65 @@ Example:
clocks = <&clk32k>;
};
SHDWC SAMA5D2-Compatible Shutdown Controller
1) shdwc node
required properties:
- compatible: should be "atmel,sama5d2-shdwc".
- reg: should contain registers location and length
- clocks: phandle to input clock.
- #address-cells: should be one. The cell is the wake-up input index.
- #size-cells: should be zero.
optional properties:
- debounce-delay-us: minimum wake-up inputs debouncer period in
microseconds. It's usually a board-related property.
- atmel,wakeup-rtc-timer: boolean to enable Real-Time Clock wake-up.
The node contains child nodes for each wake-up input that the platform uses.
2) input nodes
Wake-up input nodes are usually described in the "board" part of the Device
Tree. Note also that input 0 is linked to the wake-up pin and is frequently
used.
Required properties:
- reg: should contain the wake-up input index [0 - 15].
Optional properties:
- atmel,wakeup-active-high: boolean, the corresponding wake-up input described
by the child, forces the wake-up of the core power supply on a high level.
The default is to be active low.
Example:
On the SoC side:
shdwc@f8048010 {
compatible = "atmel,sama5d2-shdwc";
reg = <0xf8048010 0x10>;
clocks = <&clk32k>;
#address-cells = <1>;
#size-cells = <0>;
atmel,wakeup-rtc-timer;
};
On the board side:
shdwc@f8048010 {
debounce-delay-us = <976>;
input@0 {
reg = <0>;
};
input@1 {
reg = <1>;
atmel,wakeup-active-high;
};
};
Special Function Registers (SFR)
Special Function Registers (SFR) manage specific aspects of the integrated
@ -155,7 +218,7 @@ elsewhere.
required properties:
- compatible: Should be "atmel,<chip>-sfr", "syscon".
<chip> can be "sama5d3" or "sama5d4".
<chip> can be "sama5d3", "sama5d4" or "sama5d2".
- reg: Should contain registers location and length
sfr@f0038000 {

2
Documentation/devicetree/bindings/arm/cci.txt
View File

@ -100,7 +100,7 @@ specific to ARM.
"arm,cci-400-pmu,r0"
"arm,cci-400-pmu,r1"
"arm,cci-400-pmu" - DEPRECATED, permitted only where OS has
secure acces to CCI registers
secure access to CCI registers
"arm,cci-500-pmu,r0"
"arm,cci-550-pmu,r0"
- reg:

28
Documentation/devicetree/bindings/arm/coresight.txt
View File

@ -19,6 +19,7 @@ its hardware characteristcs.
- "arm,coresight-etm3x", "arm,primecell";
- "arm,coresight-etm4x", "arm,primecell";
- "qcom,coresight-replicator1x", "arm,primecell";
- "arm,coresight-stm", "arm,primecell"; [1]
* reg: physical base address and length of the register
set(s) of the component.
@ -36,6 +37,14 @@ its hardware characteristcs.
layout using the generic DT graph presentation found in
"bindings/graph.txt".
* Additional required properties for System Trace Macrocells (STM):
* reg: along with the physical base address and length of the register
set as described above, another entry is required to describe the
mapping of the extended stimulus port area.
* reg-names: the only acceptable values are "stm-base" and
"stm-stimulus-base", each corresponding to the areas defined in "reg".
* Required properties for devices that don't show up on the AMBA bus, such as
non-configurable replicators:
@ -202,3 +211,22 @@ Example:
};
};
};
4. STM
stm@20100000 {
compatible = "arm,coresight-stm", "arm,primecell";
reg = <0 0x20100000 0 0x1000>,
<0 0x28000000 0 0x180000>;
reg-names = "stm-base", "stm-stimulus-base";
clocks = <&soc_smc50mhz>;
clock-names = "apb_pclk";
port {
stm_out_port: endpoint {
remote-endpoint = <&main_funnel_in_port2>;
};
};
};
[1]. There is currently two version of STM: STM32 and STM500. Both
have the same HW interface and as such don't need an explicit binding name.

4
Documentation/devicetree/bindings/arm/fsl.txt
View File

@ -135,6 +135,10 @@ LS1043A ARMv8 based RDB Board
Required root node properties:
- compatible = "fsl,ls1043a-rdb", "fsl,ls1043a";
LS1043A ARMv8 based QDS Board
Required root node properties:
- compatible = "fsl,ls1043a-qds", "fsl,ls1043a";
LS2080A ARMv8 based Simulator model
Required root node properties:
- compatible = "fsl,ls2080a-simu", "fsl,ls2080a";

24
Documentation/devicetree/bindings/arm/hisilicon/hisilicon.txt
View File

@ -1,29 +1,33 @@
Hisilicon Platforms Device Tree Bindings
----------------------------------------------------
Hi6220 SoC
Required root node properties:
- compatible = "hisilicon,hi6220";
Hi4511 Board
Required root node properties:
- compatible = "hisilicon,hi3620-hi4511";
HiP04 D01 Board
Hi6220 SoC
Required root node properties:
- compatible = "hisilicon,hip04-d01";
HiP01 ca9x2 Board
Required root node properties:
- compatible = "hisilicon,hip01-ca9x2";
- compatible = "hisilicon,hi6220";
HiKey Board
Required root node properties:
- compatible = "hisilicon,hi6220-hikey", "hisilicon,hi6220";
HiP01 ca9x2 Board
Required root node properties:
- compatible = "hisilicon,hip01-ca9x2";
HiP04 D01 Board
Required root node properties:
- compatible = "hisilicon,hip04-d01";
HiP05 D02 Board
Required root node properties:
- compatible = "hisilicon,hip05-d02";
HiP06 D03 Board
Required root node properties:
- compatible = "hisilicon,hip06-d03";
Hisilicon system controller
Required properties:

6
Documentation/devicetree/bindings/arm/l2c2x0.txt
View File

@ -84,6 +84,12 @@ Optional properties:
- prefetch-instr : Instruction prefetch. Value: <0> (forcibly disable),
<1> (forcibly enable), property absent (retain settings set by
firmware)
- arm,dynamic-clock-gating : L2 dynamic clock gating. Value: <0> (forcibly
disable), <1> (forcibly enable), property absent (OS specific behavior,
preferrably retain firmware settings)
- arm,standby-mode: L2 standby mode enable. Value <0> (forcibly disable),
<1> (forcibly enable), property absent (OS specific behavior,
preferrably retain firmware settings)
Example:

35
Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt 100644
View File

@ -0,0 +1,35 @@
Marvell Armada AP806 System Controller
======================================
The AP806 is one of the two core HW blocks of the Marvell Armada 7K/8K
SoCs. It contains a system controller, which provides a number
registers giving access to numerous features: clocks, pin-muxing and
many other SoC configuration items. This DT binding allows to describe
this system controller.
The Device Tree node representing the AP806 system controller provides
a number of clocks:
- 0: clock of CPU cluster 0
- 1: clock of CPU cluster 1
- 2: fixed PLL at 1200 Mhz
- 3: MSS clock, derived from the fixed PLL
Required properties:
- compatible: must be:
"marvell,ap806-system-controller", "syscon"
- reg: register area of the AP806 system controller
- #clock-cells: must be set to 1
- clock-output-names: must be defined to:
"ap-cpu-cluster-0", "ap-cpu-cluster-1", "ap-fixed", "ap-mss"
Example:
syscon: system-controller@6f4000 {
compatible = "marvell,ap806-system-controller", "syscon";
#clock-cells = <1>;
clock-output-names = "ap-cpu-cluster-0", "ap-cpu-cluster-1",
"ap-fixed", "ap-mss";
reg = <0x6f4000 0x1000>;
};

83
Documentation/devicetree/bindings/arm/marvell/cp110-system-controller0.txt 100644
View File

@ -0,0 +1,83 @@
Marvell Armada CP110 System Controller 0
========================================
The CP110 is one of the two core HW blocks of the Marvell Armada 7K/8K
SoCs. It contains two sets of system control registers, System
Controller 0 and System Controller 1. This Device Tree binding allows
to describe the first system controller, which provides registers to
configure various aspects of the SoC.
The Device Tree node representing this System Controller 0 provides a
number of clocks:
- a set of core clocks
- a set of gatable clocks
Those clocks can be referenced by other Device Tree nodes using two
cells:
- The first cell must be 0 or 1. 0 for the core clocks and 1 for the
gatable clocks.
- The second cell identifies the particular core clock or gatable
clocks.
The following clocks are available:
- Core clocks
- 0 0 APLL
- 0 1 PPv2 core
- 0 2 EIP
- 0 3 Core
- 0 4 NAND core
- Gatable clocks
- 1 0 Audio
- 1 1 Comm Unit
- 1 2 NAND
- 1 3 PPv2
- 1 4 SDIO
- 1 5 MG Domain
- 1 6 MG Core
- 1 7 XOR1
- 1 8 XOR0
- 1 9 GOP DP
- 1 11 PCIe x1 0
- 1 12 PCIe x1 1
- 1 13 PCIe x4
- 1 14 PCIe / XOR
- 1 15 SATA
- 1 16 SATA USB
- 1 17 Main
- 1 18 SD/MMC
- 1 21 Slow IO (SPI, NOR, BootROM, I2C, UART)
- 1 22 USB3H0
- 1 23 USB3H1
- 1 24 USB3 Device
- 1 25 EIP150
- 1 26 EIP197
Required properties:
- compatible: must be:
"marvell,cp110-system-controller0", "syscon";
- reg: register area of the CP110 system controller 0
- #clock-cells: must be set to 2
- core-clock-output-names must be set to:
"cpm-apll", "cpm-ppv2-core", "cpm-eip", "cpm-core", "cpm-nand-core"
- gate-clock-output-names must be set to:
"cpm-audio", "cpm-communit", "cpm-nand", "cpm-ppv2", "cpm-sdio",
"cpm-mg-domain", "cpm-mg-core", "cpm-xor1", "cpm-xor0", "cpm-gop-dp", "none",
"cpm-pcie_x10", "cpm-pcie_x11", "cpm-pcie_x4", "cpm-pcie-xor", "cpm-sata",
"cpm-sata-usb", "cpm-main", "cpm-sd-mmc", "none", "none", "cpm-slow-io",
"cpm-usb3h0", "cpm-usb3h1", "cpm-usb3dev", "cpm-eip150", "cpm-eip197";
Example:
cpm_syscon0: system-controller@440000 {
compatible = "marvell,cp110-system-controller0", "syscon";
reg = <0x440000 0x1000>;
#clock-cells = <2>;
core-clock-output-names = "cpm-apll", "cpm-ppv2-core", "cpm-eip", "cpm-core", "cpm-nand-core";
gate-clock-output-names = "cpm-audio", "cpm-communit", "cpm-nand", "cpm-ppv2", "cpm-sdio",
"cpm-mg-domain", "cpm-mg-core", "cpm-xor1", "cpm-xor0", "cpm-gop-dp", "none",
"cpm-pcie_x10", "cpm-pcie_x11", "cpm-pcie_x4", "cpm-pcie-xor", "cpm-sata",
"cpm-sata-usb", "cpm-main", "cpm-sd-mmc", "none", "none", "cpm-slow-io",
"cpm-usb3h0", "cpm-usb3h1", "cpm-usb3dev", "cpm-eip150", "cpm-eip197";
};

3
Documentation/devicetree/bindings/arm/omap/crossbar.txt
View File

@ -42,7 +42,8 @@ Examples:
Consumer:
========
See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt and
Documentation/devicetree/bindings/arm/gic.txt for further details.
Documentation/devicetree/bindings/interrupt-controller/arm,gic.txt for
further details.
An interrupt consumer on an SoC using crossbar will use:
interrupts = <GIC_SPI request_number interrupt_level>

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