A memory copy operation can be expressed as an XOR operation with one
source. This commit removes code duplication in the driver by reusing
the XOR operation for the MEMCPY.

As an added benefit, we can now put MEMCPY and XOR descriptors on the
same chain, which improves performance.
Signed-off-by: NLior Amsalem <alior@marvell.com>
Signed-off-by: NEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

This commit replaces a printk(KERN_INFO ...) call with a dev_info() call,
which is prefered for drivers.
Signed-off-by: NEzequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Add device tree binding support for the QCOM ADM DMA driver.
Signed-off-by: NAndy Gross <agross@codeaurora.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Instead of one port we have 3 ports and all of them can take advantage of
the shared DMA controller.
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: NMark Brown <broonie@linaro.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

That field has been deprecated in favour of getting the necessary
information from ACPI/DT.

However, we still need to deal systems that are PCI only (no ACPI to back
up). In order to support such systems, we allow the DMA filter function and
its corresponding parameter via pxa2xx_spi_master platform data. Then when
the pxa2xx_spi_dma_setup() doesn't find the channel via ACPI, it falls back
to use the given filter function.
Suggested-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: NMark Brown <broonie@linaro.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Add new PCI IDs to cover newer Intel SoCs such as Braswell.
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

That field has been deprecated in favour of getting the necessary information
from ACPI or DT.

However, we still need to deal systems that are PCI only (no ACPI to back up)
like Intel Bay Trail. In order to support such systems, we explicitly bind
setup() to the appropriate DMA filter function and its corresponding parameter.
Then when serial8250_request_dma() doesn't find the channel via ACPI or DT, it
falls back to use the given filter function.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Braswell SoC has two DMA controllers for LPSS. This patch adds them to
supported list in the PCI driver.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

On BayTrail platform DMA is not functional in the PCI mode, whereby it always
failed and exit at the point when it tries to get a clock. It causes the PCI
mode probe to exit with the error message:
	dw_dmac_pci: probe of 0000:00:1e.0 failed with error -2

This patch moves clock operations to where it belongs to. Thus, the clock is
provided only in ACPI / non-PCI cases.
Reported-by: NChew, Chiau Ee <chiau.ee.chew@intel.com>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

The introduced filter function would be reused in the ACPI and DT cases since
in those cases we have to apply mandatory data to the requested channel. Thus,
patch moves platform driver to use it in that case.

The function unlikely can't be used by users of the driver due to an implicit
dependency to the dw_dmac_core module.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Instead of one request line member let's use both source and destination ones.
Usually we have no such hardware except Atmel MMC controller found on AVR32
platform (see arch/avr32/mach-at32ap/at32ap700x.c and
drivers/mmc/host/atmel-mci.c).

This patch removes slave_id usage since it'll be removed from the generic
structure in later. This breaks the non-ACPI / non-DT cases for the users of
the driver, i.e. SPI and HSUART. However, these cases mean only PCI enumerated
devices for now, which is anyway broken (considering more than one DMA
controller in the system) and this patch series is intended to fix that
eventually.

The ACPI and DT cases shall be aware of the channel direction when setting
request lines, but this is a minor problem that would be addressed in future.
Suggested-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Instead of exposing the possibility to set DMA registers CFG_HI and CFG_LO
strict user to provide handshake interfaces explicitly.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: NHans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

In future we are going to remove the defaults of AHB masters from dw_dmac
driver. It means each user have to supply proper source and destination masters
by itself explicitly.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: NHans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

There is a common storage for platform data related structures and definitions
inside kernel source tree. The patch moves file from include/linux to
include/linux/platform_data and renames it acoordingly. The users are also
updated.
Signed-off-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
[For the arch/avr32/.* and .*sound/atmel.*]
Acked-by: NHans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

add NO_PERIOD_WAKEUP to PCM INFO, which supports audio no IRQ mode
Signed-off-by: NQiao Zhou <zhouqiao@marvell.com>
Acked-by: NMark Brown <broonie@linaro.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

add DMA_PREP_INTERRUPT flag to support no_period_wakeup, in which
user space app doesn't want audio interrupt to wake up audio threads.
Signed-off-by: NQiao Zhou <zhouqiao@marvell.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

We can't annotate probe functions as __init since binding can occur at
any time, not just during kernel init.
Signed-off-by: NMark Brown <broonie@linaro.org>
Acked-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

In case of no corresponding slave ID, the audmapp_set_slave() returns
-ENXIO same as sh_dmae_set_slave() of shdmac.c.
DMAEngine might return wrong channel without this patch
Signed-off-by: NRyo Kataoka <ryo.kataoka.wt@renesas.com>
Signed-off-by: Jun Watanabe <jun.watanabe.ue@renesas.com>,
Signed-off-by: NKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Commit 16052827 ("dmaengine/dma_slave:
introduce inline wrappers") introduced some wrappers, but there is still
a reference to the old function.

Update the documentation to use the wrapper, and add a missing "()" to a
function name.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

There is no need to init .owner field.

Based on the patch from Peter Griffin <peter.griffin@linaro.org>
"mmc: remove .owner field for drivers using module_platform_driver"

This patch removes the superflous .owner field for drivers which
use the module_platform_driver API, as this is overriden in
platform_driver_register anyway."
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>
Reviewed-by: NLevente Kurusa <lkurusa@redhat.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Device-tree binding documentation of Xilinx DMA Engine
Signed-off-by: NSrikanth Thokala <sthokal@xilinx.com>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Several dma drivers calls tasklet_kill() in remove function. This is done
because all running tasklets should be killed on remove. This is missing
in imx sdma driver, so adding tasklet_kill() in sdma_remove function.
Signed-off-by: NVignesh Raman <Vignesh_Raman@mentor.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

Currently there is no module_exit declared in SDMA driver, so that once
sdma module is inserted, it's shown with permanent attribute by lsmod,
and it can't be removed.
Use module_platform_driver to register/unregister SDMA driver and modify
SDMA's remove operation, to make SDMA driver possible to be removed.
Signed-off-by: NJiada Wang <jiada_wang@mentor.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>

SPI PXA2XX core layer has dependency on common clock framework
to obtain information on host supported clock rate. Thus, we
setup the clock device in the PCI glue layer to enable PCI mode
host pass in the clock rate information.
Signed-off-by: NChew, Chiau Ee <chiau.ee.chew@intel.com>
Acked-by: NKweh, Hock Leong <hock.leong.kweh@intel.com>
Acked-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NMark Brown <broonie@linaro.org>

Pull x86 platform driver updates from Matthew Garrett:
 "A moderate number of changes, but nothing awfully significant.

  A lot of const cleanups, some reworking and additions to the rfkill
  quirks in the asus driver, a new driver for generating falling laptop
  events on Toshibas and some misc fixes.

  Maybe vendors have stopped inventing things"

* 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: (41 commits)
  platform/x86: Enable build support for toshiba_haps
  Documentation: Add file about toshiba_haps module
  platform/x86: Toshiba HDD Active Protection Sensor
  asus-nb-wmi: Add wapf4 quirk for the U32U
  alienware-wmi: make hdmi_mux enabled on case-by-case basis
  ideapad-laptop: Constify DMI table and other r/o variables
  asus-nb-wmi.c: Rename x401u quirk to wapf4
  compal-laptop: correct invalid hwmon name
  toshiba_acpi: Add Qosmio X75-A to the alt keymap dmi list
  toshiba_acpi: Add extra check to backlight code
  Fix log message about future removal of interface
  ideapad-laptop: Disable touchpad interface on Yoga models
  asus-nb-wmi: Add wapf4 quirk for the X550CC
  intel_ips: Make ips_mcp_limits variables static
  thinkpad_acpi: Mark volume_alsa_control_{vol,mute} as __initdata
  fujitsu-laptop: Mark fujitsu_dmi_table[] DMI table as __initconst
  hp-wmi: Add missing __init annotations to initialization code
  hp_accel: Constify ACPI and DMI tables
  fujitsu-tablet: Mark DMI callbacks as __init code
  dell-laptop: Mark dell_quirks[] DMI table as __initconst
  ...

Pull idle update from Len Brown:
 "Two Intel-platform-specific updates to intel_idle, and a cosmetic
  tweak to the turbostat utility"

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
  tools/power turbostat: tweak whitespace in output format
  intel_idle: Broadwell support
  intel_idle: Disable Baytrail Core and Module C6 auto-demotion

Pull module fix from Rusty Russell:
 "Nasty potential bug if someone uses a known module param with an
  invalid value (we don't fail unknown module params any more, just
  warn)"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  module: Clean up ro/nx after early module load failures

Pull virtio-rng update from Amit Shah:
 "Add derating factor for use by hwrng core

  Sending directly to you with the commit log changes Ted Ts'o pointed
  out.  Not sure if Rusty's back after his travel, but this already has
  his s-o-b"

* 'rng-queue' of git://git.kernel.org/pub/scm/linux/kernel/git/amit/virtio:
  virtio: rng: add derating factor for use by hwrng core

Pull btrfs updates from Chris Mason:
 "These are all fixes I'd like to get out to a broader audience.

  The biggest of the bunch is Mark's quota fix, which is also in the
  SUSE kernel, and makes our subvolume quotas dramatically more
  accurate.

  I've been running xfstests with these against your current git
  overnight, but I'm queueing up longer tests as well"

* 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: disable strict file flushes for renames and truncates
  Btrfs: fix csum tree corruption, duplicate and outdated checksums
  Btrfs: Fix memory corruption by ulist_add_merge() on 32bit arch
  Btrfs: fix compressed write corruption on enospc
  btrfs: correctly handle return from ulist_add
  btrfs: qgroup: account shared subtrees during snapshot delete
  Btrfs: read lock extent buffer while walking backrefs
  Btrfs: __btrfs_mod_ref should always use no_quota
  btrfs: adjust statfs calculations according to raid profiles

Pull file locking bugfixes from Jeff Layton:
 "Most of these patches are to fix a long-standing regression that crept
  in when the BKL was removed from the file-locking code.  The code was
  converted to use a conventional spinlock, but some fl_release_private
  ops can block and you can end up sleeping inside the lock.

  There's also a patch to make /proc/locks show delegations as 'DELEG'"

* tag 'locks-v3.17-2' of git://git.samba.org/jlayton/linux:
  locks: update Locking documentation to clarify fl_release_private behavior
  locks: move locks_free_lock calls in do_fcntl_add_lease outside spinlock
  locks: defer freeing locks in locks_delete_lock until after i_lock has been dropped
  locks: don't reuse file_lock in __posix_lock_file
  locks: don't call locks_release_private from locks_copy_lock
  locks: show delegations as "DELEG" in /proc/locks

Pull aio updates from Ben LaHaise.

* git://git.kvack.org/~bcrl/aio-next:
  aio: use iovec array rather than the single one
  aio: fix some comments
  aio: use the macro rather than the inline magic number
  aio: remove the needless registration of ring file's private_data
  aio: remove no longer needed preempt_disable()
  aio: kill the misleading rcu read locks in ioctx_add_table() and kill_ioctx()
  aio: change exit_aio() to load mm->ioctx_table once and avoid rcu_read_lock()

Makefile and Kconfig build support patch for the newly introduced
kernel module toshiba_haps.
Signed-off-by: NAzael Avalos <coproscefalo@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

This patch provides information about the Toshiba HDD
Active Protection Sensor driver module toshiba_haps.
Signed-off-by: NAzael Avalos <coproscefalo@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

This driver adds support for the built-in accelereometer found
on recent Toshiba laptops with HID TOS620A.

This driver receives ACPI notify events 0x80 when the sensor
detects a sudden move or a harsh vibration, as well as an
ACPI notify event 0x81 whenever the movement or vibration has
been stabilized.

Also provides sysfs entries to get/set the desired protection
level and reseting the HDD protection interface.
Signed-off-by: NAzael Avalos <coproscefalo@gmail.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

As reported here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173681
the U32U needs wapf=4 too.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Not all HW supporting WMAX method will support the HDMI mux feature.
Explicitly quirk the HW that does support it.
Signed-off-by: NMario Limonciello <mario_limonciello@dell.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

Constify the rfkill_blacklist[] DMI table, the ideapad_rfk_data[] table
and the ideapad_attribute_group attribute group. There's no need to have
them writeable during runtime.
Signed-off-by: NMathias Krause <minipli@googlemail.com>
Cc: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>

The actual x401u does not use the so named x401u quirk but the x55u quirk.
All that the x401u quirk does it setting wapf to 4, so rename it to wapf4 to
stop the confusion.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>