staging: sw_sync: add stubs for kernels without CONFIG_SW_SYNC

Change-Id: I7a12679eb3c10b1beaf36c6612cf2e3f6662a034
Signed-off-by: Greg Hackmann <ghackmann@google.com>
video: add atomic display framework

Change-Id: I693257e269a99012cd0dbb57576ac222869cf4c7
Signed-off-by: Greg Hackmann <ghackmann@google.com>
video: adf: add memblock helper

Provides a dma-buf exporter for memblocks, mainly useful for ADF devices
to wrap their bootloader logos

Change-Id: I936a9b5df099ab6084d433fcaf50f3bc29f93289
Signed-off-by: Greg Hackmann <ghackmann@google.com>
video: adf: support "simple" buffers

Simple buffers are linear RGB buffers analogous to KMS's dumb buffers.
Simple buffers can be allocated and posted to a display interface
without any driver-private data.

Internally, ADF drivers provide the driver-private data needed (if any)
to post a simple buffer to the display.

Change-Id: Ib0b737622eaf343111310f6623f99d69cf3807d2
Signed-off-by: Greg Hackmann <ghackmann@google.com>
video: adf: add supported formats to adf_overlay_engine_data

Change-Id: If2aa783b9ece60160f465bf697508fc58682e1bc
Signed-off-by: Greg Hackmann <ghackmann@google.com>
video: adf: add fbdev compatibility helper

Change-Id: I2b82bb625f805e8edb27799743b290dda5befb97
Signed-off-by: Greg Hackmann <ghackmann@google.com>
video: adf: add informational flags to interfaces

Informational flags don't affect ADF directly but may be useful to
clients.  Currently used to indicate primary and external displays.

Change-Id: I343c7f0148da0869244c8e818350e9855525df85
Signed-off-by: Greg Hackmann <ghackmann@google.com>
sync: signal pt before sync_timeline object gets destroyed

There is a race condition

Assume we have *one* sync_fence object, with *one* sync_pt
which belongs to *one* sync_timeline, given this condition,
sync_timeline->kref will have two counts, one for sync_timeline
(implicit) and another for sync_pt.

Assume following is the situation on CPU

Theead-1 : (Thread which calls sync_timeline_destroy())
  -> (some function calls)
   -> sync_timeline_destory()
    -> sync_timeline_signal() (CPU is inside this
function after putting reference to sync_timeline)

At this time Thread-2 comes and does following

Thread-2 : (fclose on fence fd)
> sync_fence_release() -> because of fclose() on fence object
 -> sync_fence_free()
  -> sync_pt_free()
   -> kref_put(&pt->parent->kref, sync_timeline_free);
    -> sync_timeline_free() (CPU is inside this because
this time kref will be zero after _put)

Thread-2 will free sync_timeline object before Thread-1
has finished its work inside sync_timeline_signal.

With this change we signals all sync_pt before putting
reference to sync_timeline object.

Change-Id: Ic680e4d0bbef1c46bcb7cfba693395645241d203
Signed-off-by: Prakash Kamliya <pkamliya@codeaurora.org>
cpufreq: interactive: Remove unnecessary cpu_online() check

Cpufreq no longer calls governor callback for offlined cpus. i.e. All
policy->cpus are guaranteed to be online. Hence we don't need explicit check to
see if cpu is online or not.

Change-Id: I9ad85ea4addd5b4a40952e59ed730dd15e328690
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
cpufreq: interactive: Move definition of cpufreq_gov_interactive downwards

This moves definition of cpufreq_gov_interactive towards the bottom of file, so
that we don't have to add prototype of cpufreq_governor_interactive() in the
beginning of file.

Change-Id: I04bd1004954eb36502c5cd7e35d3d7274cddaf95
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
cpufreq: Interactive: Implement per policy instances of governor

If we have a multi-package system, where we have multiple instances of struct
policy (per package), currently we can't have multiple instances of same
governor. i.e. We can't have multiple instances of Interactive governor for
multiple packages.

This is a bottleneck for multicluster system, where we want different packages
to use Interactive governor, but with different tunables.

This patch uses the infrastructure provided by earlier patches pushed in
Mainline in v3.10-rc1/rc2 and implements per policy instances of Interactive
governor.

Change-Id: I70436d4a5a45c6cb6edf37f3e46d0b9fbc930982
[toddpoynor@google.com: merge with later code, minor changes]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
cpufreq: interactive: delete timers for GOV_START

Make sure that timers cpu_timer and cpu_slack_timer
deactivated before addition of new.

Change-Id: If31c4049606871df6f00efdc24b1d713c86a6f69
Signed-off-by: Shridhar Rasal <srasal@nvidia.com>
Signed-off-by: Bharat Nihalani <bnihalani@nvidia.com>
ion: add new ion_user_handle_t type for the user-space token

Declare new ion_user_handle_t type to contain the token returned to user-space.
This allows a 2-step migration of the user-space code to a new kernel header
first, then will allow us to change the definition of the ion_user_handle_type_t
to int without breaking the API.

Change-Id: I4200b6600df8e56fe98cf1580a13a65cb25ec646
Signed-off-by: Rom Lemarchand <romlem@google.com>
(cherry picked from commit ebb8269bbb05b06ecedca3e21b3e65f23d48eadd)
sync: Fix a race condition between release_obj and print_obj

Before this change, a timeline would only be removed from the timeline
list *after* the sync driver had its release_obj() called. However, the
driver's release_obj() may free resources needed by print_obj().

Although the timeline list is locked when print_obj() is called, it is
not locked when release_obj() is called. If one CPU was in print_obj()
when another was in release_obj(), the print_obj() may make unsafe
accesses.

It is not actually necessary to hold the timeline list lock when calling
release_obj() if the call is made after the timeline is unlinked from
the list, since there is no possibility another thread could be in --
or enter -- print_obj() for that timeline.

This change moves the release_obj() call to after the timeline is
unlinked, preventing the above race from occurring.

Signed-off-by: Alistair Strachan <alistair.strachan@imgtec.com>
(cherry picked from commit 3bfc1e9e0c7d0c0e3f52ee1f3803482416afa295)

Change-Id: Ib2b2b23fde5be34016f9d86b8b9c5e561b56cd4c
video: adf: add helpers for validating custom formats

Many custom formats look a lot like the standard ones, but with
different subsampling, bpp, etc.  Expose and document
adf_buffer_validate()'s main body, so drivers can reuse its logic when
validating these formats.

Change-Id: I1d06981c9e5aab26f3ab2956c08c679f2c823bcc
Signed-off-by: Greg Hackmann <ghackmann@google.com>
video: adf: make dpms_state sysfs attribute writable

Change-Id: I04e7785cbddac160003e6c9edaf62d20b367fdc9
Signed-off-by: Greg Hackmann <ghackmann@google.com>
video: adf: set default interface dpms_state to OFF

Interfaces default to unplugged, so they should also default to off

Change-Id: I36500a54b11f354a0d7dd2c9924a79e0d9c6f855
Signed-off-by: Greg Hackmann <ghackmann@google.com>
video: adf: expose adf_modeinfo_set_{name,vrefresh} to drivers

Change-Id: Id9f8b2184927a77b244ce0b33d619d6e44a0f17a
Signed-off-by: Greg Hackmann <ghackmann@google.com>
usb: gadget: android: Remove device if probe fails

Make sure the android0 device is removed before we can destroy
the class.

Change-Id: Id584888c407beb80a1df4990f73fe31ccb9d4767
Signed-off-by: Benoit Goby <benoit@android.com>
ion: change ion_user_handle_t definition to int

Turn ion_user_handle_t to int. This change reflects the underlying type
returned by the ion driver.

Change-Id: I40390dae8138327769510525bf62e55877a4b37d
Signed-off-by: Rom Lemarchand <romlem@google.com>