initial
drivers: msm_thermal: make thermal throttle temperature threshold user configurable.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>

Conflicts:
	drivers/thermal/msm_thermal.c

Conflicts:
	drivers/thermal/msm_thermal.c
drivers: thermal: properly limit CPU frequency when the temperature is too hot: if we throttle too much games will lag so we'll only scale down to 1026MHz until the device cools down, then back to 1512MHz again. Added other smaller routine changes to make it work properly.

Signed-off-by: franciscofranco <franciscofranco.1990@gmail.com>
thermal: tsens8960: Increase the polling rate

Change the polling rate at which the sensors temperature
is read from 1 second to .25 seconds. On faster parts
there is a need to poll the temperature at a higher
frequency to improve reporting temperature changes.

Change-Id: I10049707c3e55316597fff72fbd00246cd29bed3
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>
Battery Life eXtender (BLX)

This is a simple port of Ezekeel's BLX mod to the Nexus 4.

See this thread for more information: http://forum.xda-developers.com/showthread.php?t=1257497

Let's keep the same sysfs implementation so that apps, such as Trickster MOD, can support this.
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 mako and flo, it is based of my grouper port, which is
 based of Asus TF201 patche ported by Jens Andersen <jens.andersen@gmail.com>

 I've moved atags copying from guest to the host kernel, which means there
 is no need to patch the guest kernel, assuming the --mem-min in kexec call
 is within the first 256MB of System RAM, otherwise it will take a long time
 to load. I've also fixed /proc/atags entry, which would give the kexec-tools
 userspace binary only the first 1024 bytes of atags,
 see arch/arm/kernel/atags.c for more details.

 Other than that, memory-reservation code for the hardboot page and
 some assembler to do the watchdog reset on MSM chip are new for this device.

     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>

Patch from: https://gist.github.com/Tasssadar/6766757
Optimize
This will heavily optimize the kernel build, GPU, ARM, etc. Should be able to build with GCC's 4.7+ to 4.10 SM or Linaro

Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>
msm: kgsl: Fix policy sysfs implementation

When switching to another governor, the pwrscale kobject will be deleted
and sysfs_create_group fails due to the uninitialized kobj. This patch
deletes the kobject before attaching the file group.

[   36.270044] [<c0134304>] (__kmalloc_track_caller+0x80/0x194) from [<c010a6d0>] (kstrdup+0x2c/0x54)
[   36.270166] [<c010a6d0>] (kstrdup+0x2c/0x54) from [<c019cc98>] (create_dir+0x24/0x204)
[   36.270257] [<c019cc98>] (create_dir+0x24/0x204) from [<c019d154>] (sysfs_create_subdir+0x24/0x2c)
[   36.270318] [<c019d154>] (sysfs_create_subdir+0x24/0x2c) from [<c019e878>] (sysfs_create_group+0x40/0x1d8)
[   36.270441] [<c019e878>] (sysfs_create_group+0x40/0x1d8) from [<c0389e40>] (kgsl_pwrscale_policy_add_files+0x44/0x68)
[   36.270563] [<c0389e40>] (kgsl_pwrscale_policy_add_files+0x44/0x68) from [<c038e714>] (conservative_init+0xc/0x18)
[   36.270654] [<c038e714>] (conservative_init+0xc/0x18) from [<c0389c6c>] (pwrscale_policy_store+0xcc/0x154)
[   36.270776] [<c0389c6c>] (pwrscale_policy_store+0xcc/0x154) from [<c0389a90>] (pwrscale_sysfs_store+0x20/0x2c)
[   36.270868] [<c0389a90>] (pwrscale_sysfs_store+0x20/0x2c) from [<c019b2a4>] (sysfs_write_file+0x168/0x198)
[   36.270990] [<c019b2a4>] (sysfs_write_file+0x168/0x198) from [<c01382c4>] (vfs_write+0x9c/0x170)
[   36.271112] [<c01382c4>] (vfs_write+0x9c/0x170) from [<c0138440>] (sys_write+0x38/0x70)
[   36.271173] [<c0138440>] (sys_write+0x38/0x70) from [<c000f000>] (ret_fast_syscall+0x0/0x30)
[   36.271265] Code: e7925001 e3550000 0a000033 e5942014 (e795a002)
[   36.271661] ---[ end trace ef0d8b9c8acc7bbb ]---
msm: kgsl: Report GPU frequency correctly in sysfs
msm: kgsl: Fix Z180 memory leak

Decerement entry refcount, which incremented
in kgsl_sharedmem_find_region.

CRs-Fixed: 635747
Change-Id: I621ba8f8e119a9ab8ba5455b28a565e3cae2f7cd
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>
msm: kgsl: Mark the IOMMU setstate memory as read only

Mark the IOMMU setstate memory as read only in the pagetable.

Change-Id: Ic0dedbadb19e499c749cd744c3e89be3bcb4c2a2
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: Panic if global timestamp wait fails in context detach

If we timeout while waiting for the last issued global timestamp for
a detaching context to expire (10 seconds!) then we are on a fast
train to crashville.  BUG_ON() so we can stand a chance of debugging
this very rare issue.

Change-Id: Ic0dedbaddb9cbc5681f9c872785ce26b7cf9b87b
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: Force the ME off before reading the microcode

On A3XX reading the microcode while the CP is running is dangerous
beyond words.  By setting the offset address for the read, we are
essentially changing the instruction pointer for the ME while it
is running causing opcode errors, gpu faults and/or system errors.

We do not want to stop the CP at the beginning of the snapshot
process beacuse doing so changes the RBBM status and the state of
the CP registers which may damage the debug effort.  But by the
time we get to the microcode read we no longer care about the state
of the registers so we can freely halt the ME just before starting
the read.

CRs-fixed: 585449
Change-Id: Ic0dedbad85d7ec26915f054dd597e226e8101a29
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: Fix mem leak when page allocation fails

Page allocation may fail during OOM condition. Update
sglen and size to correct value (allocated) so that
they get freed in kgsl_sharedmem_free().

Change-Id: I1aa0ca77bb767523dfcf0f6cc3a21eac2b6b80e4
Signed-off-by: Hareesh Gundu <hareeshg@codeaurora.org>
msm: kgsl: Restrict the maximum memory entries for bulk cache sync

Restrict the maximum number of memory entries that can be specified
to a single bulk cache sync call to PAGE_SIZE / sizeof(unsigned int)
so that the allocation can always fit within one page.

CRs-fixed: 578062
Change-Id: Ic0dedbad07e1986cd6ccc5b260ffef82b5adb6d3
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: Protect against a potential overflow in kgsl_sg_alloc

Avoid allocating a scatterlist so large that it overflows the size
passed to the memory allocators.

CRs-fixed: 564448
Change-Id: Ic0dedbad2ab421ddec8f3be38d61c9bdf9ae5bd4
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: avoid zero length scatterlist allocation

During sglist allocation we calculate sglen as
per below

sglen_alloc = PAGE_ALIGN(size) >> PAGE_SHIFT;

sglen_alloc can be zero if size falls within the
last page. For example, when size = 0xFFFF_FF7B,
PAGE_ALIGN(0xFFFF_FF7B) will be 0, considering
0x1000 (4kb) PAGE_SIZE. if kzalloc() with
zero size, it will return ZERO_SIZE_PTR which is
not NULL and we always do NULL check. Dereferencing
ZERO_SIZE_PTR will lead to a distinct access fault.

Change-Id: Ibcc6198438c13b5111be0faa736328db92511597
CRs-Fixed: 563106
Signed-off-by: Prakash Kamliya <pkamliya@codeaurora.org>
msm: kgsl: Fix several possible problem spots in the dispatcher

Fix a few spots that the compiler warnings missed. Avoid
dereferencing a pointer that may have returned ERR_PTR() without
first checking to see that if it did return ERR_PTR() and correct
an egregious signed / unsigned mixup. Not sure why the compiler
didn't yell at me for that one.

Change-Id: Ic0dedbadf075b34e51a89ce625d2308c5171a58d
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
msm: kgsl: when unmapping from the mmu flush the entire tlb

Flushes the entire tlb when calling mmu_unmap to make sure there
is no race condition between unmapping and freeing the pages.

Change-Id: I911f8479a3aef2006f9df40a3419284423937542
Signed-off-by: Shrenuj Bansal <shrenujb@codeaurora.org>
msm: kgsl: Prevent device start after it is already started

Check if device is already started in high priority workqueue thread,
this check prevents calling device start after it is already started,
thereby avoiding unpredictable behavior.

Change-Id: Iffcd065f8c02746d168c8e5779d10d4b0e2404a9
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>