inital commit: remove useless stuff, add defconfig

Signed-off-by: engstk <eng.stk@sapo.pt>
Sound Control: WCD9320: expose additional controls

Signed-off-by: Paul Reioux <reioux@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
sound control 3.x: Initial GPL release for WCD9320 Audio Codec

This is first official GPL release based on my private implementation.

This release has been tested for xperia Z officially.  It may work
with other devices using the same WCD9320 Audio Codec as well, but not tested

Signed-off-by: Paul Reioux <reioux@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
sound control: WCD9320: update speaker gain control for Z1

Signed-off-by: Paul Reioux <reioux@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
Sound Control: (Optional) work around for Nexus 4/5 audio issues

(Use this only for devices with audio reset issues)

Also bump version to 3.1

Signed-off-by: Paul Reioux <reioux@gmail.com>

wcd9xxx-core: add register write without mutex protection

This is assuming the calling function will take care of the mutex.

Change-Id: Icabceee0dff9333ec28ec3d37333b8e05af8a0bb
Signed-off-by: Paul Reioux <reioux@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
Sound Control: (OPTIONAL) add power amp registers access control as well

Change-Id: Id34dfe845af0d42607453846e062619cf5927445
Signed-off-by: Paul Reioux <reioux@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
sound control: add register cache

bump to version 3.2

Change-Id: I4b97a7acb05ac6840c06044b4ccd4b9bc5244c4a
Signed-off-by: Paul Reioux <reioux@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
defconfig: Enable faux sound

Signed-off-by: engstk <eng.stk@sapo.pt>
block: row: add magic values.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
lib/int_sqrt.c: optimize square root algorithm

Optimize the current version of the shift-and-subtract (hardware)
algorithm, described by John von Newmann[1] and Guy L Steele.

Iterating 1,000,000 times, perf shows for the current version:

 Performance counter stats for './sqrt-curr' (10 runs):

         27.170996 task-clock                #    0.979 CPUs utilized            ( +-  3.19% )
                 3 context-switches          #    0.103 K/sec                    ( +-  4.76% )
                 0 cpu-migrations            #    0.004 K/sec                    ( +-100.00% )
               104 page-faults               #    0.004 M/sec                    ( +-  0.16% )
        64,921,199 cycles                    #    2.389 GHz                      ( +-  0.03% )
        28,967,789 stalled-cycles-frontend   #   44.62% frontend cycles idle     ( +-  0.18% )
   <not supported> stalled-cycles-backend
       104,502,623 instructions              #    1.61  insns per cycle
                                             #    0.28  stalled cycles per insn  ( +-  0.00% )
        34,088,368 branches                  # 1254.587 M/sec                    ( +-  0.00% )
             4,901 branch-misses             #    0.01% of all branches          ( +-  1.32% )

       0.027763015 seconds time elapsed                                          ( +-  3.22% )

And for the new version:

Performance counter stats for './sqrt-new' (10 runs):

          0.496869 task-clock                #    0.519 CPUs utilized            ( +-  2.38% )
                 0 context-switches          #    0.000 K/sec
                 0 cpu-migrations            #    0.403 K/sec                    ( +-100.00% )
               104 page-faults               #    0.209 M/sec                    ( +-  0.15% )
           590,760 cycles                    #    1.189 GHz                      ( +-  2.35% )
           395,053 stalled-cycles-frontend   #   66.87% frontend cycles idle     ( +-  3.67% )
   <not supported> stalled-cycles-backend
           398,963 instructions              #    0.68  insns per cycle
                                             #    0.99  stalled cycles per insn  ( +-  0.39% )
            70,228 branches                  #  141.341 M/sec                    ( +-  0.36% )
             3,364 branch-misses             #    4.79% of all branches          ( +-  5.45% )

       0.000957440 seconds time elapsed                                          ( +-  2.42% )

Furthermore, this saves space in instruction text:

   text    data     bss     dec     hex filename
    111       0       0     111      6f lib/int_sqrt-baseline.o
     89       0       0      89      59 lib/int_sqrt.o

[1] http://en.wikipedia.org/wiki/First_Draft_of_a_Report_on_the_EDVAC

Signed-off-by: Davidlohr Bueso <davidlohr.bueso@hp.com>
Reviewed-by: Jonathan Gonzalez <jgonzlez@linets.cl>
Tested-by: Jonathan Gonzalez <jgonzlez@linets.cl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
mm: push readahead to 512kB.

Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
Optimized ARM RWSEM algorithm

RWSEM implementation for ARM using atomic functions.
Heavily based on arch/sh/include/asm/rwsem.h

Signed-off-by: Ashwin Chaugule <ashwinc@codeaurora.org>
Signed-off-by: engstk <eng.stk@sapo.pt>
defconfig: Interactive and deadline as default

Signed-off-by: engstk <eng.stk@sapo.pt>
deadline: Allow 0ms deadline latency, increase the read speed

Change a timer compare from after to after-equals, thus allowing
0 timeout and making deadline schedule FIFO.

Signed-off-by: xiaobing tu <xiaobing.tu@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: engstk <eng.stk@sapo.pt>
block: deadline: Optimize for non-rotational

Signed-off-by: engstk <eng.stk@sapo.pt>
Implement kexec-hardboot

"Allows hard booting (i.e., with a full hardware reboot) to a kernel
previously loaded in memory by kexec.  This works around the problem of
soft-booted kernel hangs due to improper device shutdown and/or
reinitialization."
More info in /arch/arm/Kconfig.

Original author: Mike Kasick <mike@kasick.org>

Vojtech Bocek <vbocek@gmail.com>:
  I've ported it to hammerhead, it is based of my mako/grouper port, which is
  based of Asus TF201 patch ported by Jens Andersen <jens.andersen@gmail.com>

  Hammerhead is the first device I've ported this patch to which uses
  device tree binary instead of atags. It is also rather picky - its
  bootloader erases first 128MB of RAM on reboot, so following hacks had
  to be applied:
  * Copy dtb to location passed in r2 before jumping to kexecd' kernel,
    the kernel would just freeze when I left dtb above 128MB of RAM.
  * Copy kexecd' kernel to location in the first 128MB before jumping to it,
    the decompressor operates very slowly if the kernel is above the cached
    area, copying it lower and decompressing it afterwards is much faster.

  Same as my mako/flo patches, the guest kernel does not require any
  modifications, kexec-hardboot is equivalent to standard kexec.

  To support dtb, following commit was backported from the mainline:
    commit 4cabd1d9625c7d88acd143f4021fbef75394f154
    Author: Matthew Leach <matthew.leach@arm.com>
    Date:   Fri Sep 21 18:56:02 2012 +0100

      ARM: 7539/1: kexec: scan for dtb magic in segments

      This patch allows a dtb to be passed to a new kernel using the kexec
      mechinism.

      When loading segments from userspace, scan each segment's first four
      bytes for the dtb magic. If this is found set the kexec_boot_atags
      parameter to the relocate_kernel code to the phyical address of this
      segment.

  and fixes of this commit:
    c564df4db85aac8d1d65a56176a0a25f46138064
    2456f44dd7a9aaffc2cd21a13f78198b3d94da08

ayysir <dresadd09691@gmail.com>:
  kexec: use mem_text_write_kernel_word to set reboot_code_buffer args
  in order to avoid protection faults (writes to read-only
  kernel memory) when CONFIG_STRICT_MEMORY_RWX is enabled.

Signed-off-by: Vojtech Bocek <vbocek@gmail.com>
Signed-off-by: flar2 <asegaert@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
defconfig: Enable kexec-hardboot

Signed-off-by: engstk <eng.stk@sapo.pt>
mdss: dsi: Resolving memory leak in parse dsi commands

Free buf variable before exiting function in error cases
in order to avoid possible memory leaks.

Change-Id: I8ebc3f0f3f40be85e312f9646374a074f1414bdb
Signed-off-by: Krishna Chaitanya Parimi <cparimi@codeaurora.org>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
Input: Send events one packet at a time

On heavy event loads, such as a multitouch driver, the irqsoff latency
can be as high as 250 us.  By accumulating a frame worth of data
before passing it on, the latency can be dramatically reduced.  As a
side effect, the special EV_SYN handling can be removed, since the
frame is now atomic.

This patch adds the events() handler callback and uses it if it
exists. The latency is improved by 50 us even without the callback.

Change-Id: Iebd9b1868ae6300a922a45b6d104e7c2b38e4cf5
Cc: Daniel Kurtz <djkurtz@chromium.org>
Tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Tested-by: Ping Cheng <pingc@wacom.com>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

Input: Improve the events-per-packet estimate

The events-per-packet estimate has so far been used by MT devices
only. This patch adjusts the packet buffer size to also accomodate the
KEY and MSC events.  Keyboards normally send one or two keys at a
time. MT devices normally send a number of button keys along with the
MT information.  The buffer size chosen here covers those cases, and
matches the default buffer size in evdev. Since the input estimate is
now preferred, remove the special input-mt estimate.

Reviewed-and-tested-by: Ping Cheng <pingc@wacom.com>
Tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
Signed-off-by: Francisco Franco <franciscofranco.1990@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>
lib/memcopy: use glibc version

the kernel's memcpy and memmove is very inefficient. But the glibc version is
quite fast, in some cases it is 10 times faster than the kernel version. So I
introduce some memory copy macros and functions of the glibc to improve the
kernel version's performance.

The strategy of the memory functions is:
1. Copy bytes until the destination pointer is aligned.
2. Copy words in unrolled loops.  If the source and destination are not
   aligned in the same way, use word memory operations, but shift and merge
   two read words before writing.
3. Copy the few remaining bytes.

Signed-off-by: Miao Xie <miaox*******>
Signed-off-by: faux123 <reioux@gmail.com>
Signed-off-by: engstk <eng.stk@sapo.pt>