Merge branch 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-next

This pull request adds an anon file for exynos specific mmaper
to resolve potential a dead lock issue pointed out by Al Viro,
and fixes build break of drm-next.

* 'exynos-drm-next' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos: fix build error caused by removed drm core macros
  drm/exynos: use a new anon file for exynos gem mmaper

This is the drm-next pull for radeon for 3.14. Highlights include:
- dpm rework which fixes some issues and allows us to enable dpm by
default on CIK parts
- enable clockgating on CIK parts
- pci config reset.  This is a bus-level chip reset that can be more
reliable than soft reset in certain cases.  Disabled by default.  Enable
with the hard_reset module option.
- big endian rptr/wrptr update fixes
- lots of debugfs improvements
- some driver cleanup patches from Rashika Kheria
- bug fixes

* 'drm-next-3.14-wip' of git://people.freedesktop.org/~agd5f/linux: (50 commits)
  drm/radeon: implement pci config reset for CIK (v3)
  drm/radeon: implement pci config reset for SI (v2)
  drm/radeon: implement pci config reset for evergreen/cayman (v2)
  drm/radeon: implement pci config reset for r6xx/7xx (v3)
  drm/radeon: add pci config hard reset
  drm/radeon: add hard_reset module parameter
  drm/radeon: skip colorbuffer checking if COLOR_INFO.FORMAT is set to INVALID
  radeon/pm: Guard access to rdev->pm.power_state array
  drivers: gpu: Move prototype declarations to header file radeon_mode.h from radeon_atombios.c and radeon_combios.c
  drivers: gpu: Move prototype declaration to header file radeon_mode.h
  drm/radeon: move com/atombios scratch reg functions to radeon_mode.h
  drm/radeon/dpm: make some functions static for TN
  drm/radeon/dpm: make some functions static for sumo
  drm/radeon/dpm: make some functions static for CI
  drivers: gpu: Include appropriate header file in ci_smc.c
  drivers: gpu: Move prototype declaration to header file radeon_mode.h from atombios_i2c.c
  drivers: gpu: Include appropriate header file in si_smc.c and remove prototype declaration from header file sislands_smc.h
  drivers: gpu: Add static keyword to the definition of KMS_INVALID_IOCTL in radeon_kms.c
  drivers: gpu: Mark function as static in r600_hdmi.c
  drivers: gpu: Mark function as static in radeon_gem.c
  ...

MSM tree from Rob.

* 'msm-next' of git://people.freedesktop.org/~robclark/linux:
  drm/msm: add a330/apq8x74
  drm/msm: add mdp5/apq8x74
  drm/msm: add hdmi support for apq8x74/mdp5
  drm/msm: move irq utils to mdp_kms
  drm/msm: split out msm_kms.h
  drm/msm: mdp4_format -> mdp_format
  drm/msm: resync generated headers
  drm/msm: move mdp4 -> mdp/mdp4
  drm/msm: add support for msm8060ab/bstem
  drm/msm: add support for non-IOMMU systems
  drm/msm: fix bus scaling
  drm/msm: add missing MODULE_FIRMWARE()s
  drm/msm: COMPILE_TEST support

Add support for adreno 330.  Not too much different, just a few
differences in initial configuration plus setting OCMEM base.
Userspace support is already in upstream mesa.

Note that the existing DT code is simply using the bindings from
downstream android kernel, to simplify porting of this driver to
existing devices.  These do not constitute any committed/stable
DT ABI.  The addition of proper DT bindings will be a subsequent
patch, at which point (as best as possible) I will try to support
either upstream bindings or what is found in downstream android
kernel, so that existing device DT files can be used.
Signed-off-by: Rob Clark <robdclark@gmail.com>

Add support for the new MDP5 display controller block.  The mapping
between parts of the display controller and KMS is:

  plane   -> PIPE{RGBn,VIGn}             \
  crtc    -> LM (layer mixer)            |-> MDP "device"
  encoder -> INTF                        /
  connector -> HDMI/DSI/eDP/etc          --> other device(s)

Unlike MDP4, it appears we can get by with a single encoder, rather
than needing a different implementation for DTV, DSI, etc.  (Ie. the
register interface is same, just different bases.)

Also unlike MDP4, all the IRQs for other blocks (HDMI, DSI, etc) are
routed through MDP.

And finally, MDP5 has this "Shared Memory Pool" (called "SMP"), from
which blocks need to be allocated to the active pipes based on fetch
stride.
Signed-off-by: Rob Clark <robdclark@gmail.com>

The HDMI block is basically the same between older SoC's with mdp4
display controller, and newer ones with mdp5.

So mostly this consists of better abstracting out the different sets of
regulators, clks, etc.  In particular, for regulators and clks we can
split it up by what is needed for hot plug detect to work, and what is
needed to light up the display.

Also, 8x74 has a new phy.. a very simple one, but split out into a
different mmio space.  And with mdp5, the irq is shared with mdp, so we
don't directly register our own irq handler.
Signed-off-by: Rob Clark <robdclark@gmail.com>

We'll want basically the same thing for mdp5, so refactor it out so it
can be shared.
Signed-off-by: Rob Clark <robdclark@gmail.com>

Signed-off-by: Rob Clark <robdclark@gmail.com>

This can be shared between mdp4 and mdp5.  Both use the same set of
parameters to describe the format to the hw.
Signed-off-by: Rob Clark <robdclark@gmail.com>

resync to latest envytools db, add mdp5 registers
Signed-off-by: Rob Clark <robdclark@gmail.com>

There are some little bits and pieces that mdp4 and mdp5 can share, so
move things around so that we can have both in a common parent
directory.
Signed-off-by: Rob Clark <robdclark@gmail.com>

This adds the necessary configuration for the APQ8060A SoC (dual-core
krait + a320 gpu) as found on the bstem board.
Signed-off-by: Rob Clark <robdclark@gmail.com>

Add a VRAM carveout that is used for systems which do not have an IOMMU.

The VRAM carveout uses CMA.  The arch code must setup a CMA pool for the
device (preferrably in highmem.. a 256m-512m VRAM pool in lowmem is not
cool).  The user can configure the VRAM pool size using msm.vram module
param.

Technically, the abstraction of IOMMU behind msm_mmu is not strictly
needed, but it simplifies the GEM code a bit, and will be useful later
when I add support for a2xx devices with GPUMMU, so I decided to keep
this part.

It appears to be possible to configure the GPU to restrict access to
addresses within the VRAM pool, but this is not done yet.  So for now
the GPU will refuse to load if there is no sort of mmu.  Once address
based limits are supported and tested to confirm that we aren't giving
the GPU access to arbitrary memory, this restriction can be lifted
Signed-off-by: Rob Clark <robdclark@gmail.com>

This got a bit broken with original patches when re-arranging things to
move dependencies on mach-msm inside #ifndef OF.
Signed-off-by: Rob Clark <robdclark@gmail.com>

Signed-off-by: Rob Clark <robdclark@gmail.com>

With a simple stub, we can get COMPILE_TEST support.
Signed-off-by: Rob Clark <robdclark@gmail.com>

pci config reset is a low level reset that resets
the entire chip from the bus interface.  It can
be more reliable if soft reset fails.

v2: fix rebase
v3: hide behind module parameter
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

pci config reset is a low level reset that resets
the entire chip from the bus interface.  It can
be more reliable if soft reset fails.

v2: hide behind module parameter
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

pci config reset is a low level reset that resets
the entire chip from the bus interface.  It can
be more reliable if soft reset fails.

v2: put behind module parameter
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

pci config reset is a low level reset that resets
the entire chip from the bus interface.  It can
be more reliable if soft reset fails.

There's not much information still available on
r6xx, so r6xx is based on guess-work.

v2: put behind module parameter
v3: add IGP check
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This is used to hard reset the asic.  If a soft
reset is not able to reset things, a hard reset
can be used.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Enabling this parameter enables pci config reset,
aka hard reset, which is a bus level chip reset.
In some cases this works more reliably than a soft
reset.  Disabled by default.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

This fixes a bug which was causing rejections of valid GPU commands
from userspace.
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

It's never allocated on systems without an ATOMBIOS or COMBIOS ROM.

Should fix an oops I encountered while resetting the GPU after a lockup
on my PowerBook with an RV350.
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

drivers: gpu: Move prototype declarations to header file radeon_mode.h from radeon_atombios.c and radeon_combios.c

Move prototype declarations of functions radeon_get_encoder_enum() and
radeon_link_encoder_connector() to header file drm/radeon/radeon_mode.h
because they are used by more than one file.

This eliminates the following warnings in drm/radeon/radeon_encoders.c:
drivers/gpu/drm/radeon/radeon_encoders.c:86:1: warning: no previous prototype for ‘radeon_get_encoder_enum’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_encoders.c:162:1: warning: no previous prototype for ‘radeon_link_encoder_connector’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Move prototype declaration of functions radeon_add_atom_connector() and
radeon_add_legacy_connector() to header file drm/radeon/radeon_mode.h
because  they are used by more than one file.

This eliminates the following warning in drm/radeon/radeon_connectors.c:
drivers/gpu/drm/radeon/radeon_connectors.c:1588:1: warning: no previous prototype for ‘radeon_add_atom_connector’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_connectors.c:2020:1: warning: no previous prototype for ‘radeon_add_legacy_connector’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

fixes warnings with -Wmissing-prototypes

Based on initial patches from Rashika Kheria.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Rashika Kheria <rashika.kheria@gmail.com>

Noticed by Rashika Kheria and cherry-picked from
her larger patch set.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Rashika Kheria <rashika.kheria@gmail.com>

Noticed by Rashika Kheria and cherry-picked from
her larger patch set.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Rashika Kheria <rashika.kheria@gmail.com>

Noticed by Rashika Kheria and cherry-picked from
her larger patch set.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Rashika Kheria <rashika.kheria@gmail.com>

Include header file drm/radeon/ci_dpm.h in drm/radeon/ci_smc.c because
it uses function declared in the header file.

This eliminates the following warnings in drm/radeon/ci_smc.c:
drivers/gpu/drm/radeon/ci_smc.c:46:5: warning: no previous prototype for ‘ci_copy_bytes_to_smc’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:113:6: warning: no previous prototype for ‘ci_start_smc’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:121:6: warning: no previous prototype for ‘ci_reset_smc’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:129:5: warning: no previous prototype for ‘ci_program_jump_on_start’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:136:6: warning: no previous prototype for ‘ci_stop_smc_clock’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:145:6: warning: no previous prototype for ‘ci_start_smc_clock’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:154:6: warning: no previous prototype for ‘ci_is_smc_running’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:165:14: warning: no previous prototype for ‘ci_send_msg_to_smc’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:186:14: warning: no previous prototype for ‘ci_wait_for_smc_inactive’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:204:5: warning: no previous prototype for ‘ci_load_smc_ucode’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:251:5: warning: no previous prototype for ‘ci_read_smc_sram_dword’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/ci_smc.c:266:5: warning: no previous prototype for ‘ci_write_smc_sram_dword’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Move prototype declaration of function radeon_atom_copy_swap() to header
file drm/radeon/radeon_mode.h because it is used by more than one file.

This eliminates the following warnings in drm/radeon/atombios_dp.c:
drivers/gpu/drm/radeon/atombios_dp.c:53:6: warning: no previous prototype for ‘radeon_atom_copy_swap’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers: gpu: Include appropriate header file in si_smc.c and remove prototype declaration from header file sislands_smc.h

Include header file gpu/drm/radeon/sislands_smc.h in drm/radeon/si_smc.c
because it uses function declared in the header file.

Remove prototype declaration of function si_set_smc_sram_address() from
drm/radeon/sislands_smc.h because the function is used only in one file
where it is declared static already.

This eliminates the following warnings in drm/radeon/si_smc.c:
drivers/gpu/drm/radeon/si_smc.c:46:5: warning: no previous prototype for ‘si_copy_bytes_to_smc’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:112:6: warning: no previous prototype for ‘si_start_smc’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:121:6: warning: no previous prototype for ‘si_reset_smc’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:135:5: warning: no previous prototype for ‘si_program_jump_on_start’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:142:6: warning: no previous prototype for ‘si_stop_smc_clock’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:151:6: warning: no previous prototype for ‘si_start_smc_clock’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:160:6: warning: no previous prototype for ‘si_is_smc_running’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:171:14: warning: no previous prototype for ‘si_send_msg_to_smc’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:192:14: warning: no previous prototype for ‘si_wait_for_smc_inactive’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:210:5: warning: no previous prototype for ‘si_load_smc_ucode’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:269:5: warning: no previous prototype for ‘si_read_smc_sram_dword’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/si_smc.c:284:5: warning: no previous prototype for ‘si_write_smc_sram_dword’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Add static keyword to the definition of KMS_INVALID_IOCTL(name) in
radeon_kms.c because the functions passed to it as arguments are not
used anywhere else.

This eliminates the following warnings in drm/radeon/radeon_kms.c:
drivers/gpu/drm/radeon/radeon_kms.c:719:1: warning: no previous prototype for ‘radeon_cp_init_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:720:1: warning: no previous prototype for ‘radeon_cp_start_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:721:1: warning: no previous prototype for ‘radeon_cp_stop_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:722:1: warning: no previous prototype for ‘radeon_cp_reset_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:723:1: warning: no previous prototype for ‘radeon_cp_idle_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:724:1: warning: no previous prototype for ‘radeon_cp_resume_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:725:1: warning: no previous prototype for ‘radeon_engine_reset_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:726:1: warning: no previous prototype for ‘radeon_fullscreen_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:727:1: warning: no previous prototype for ‘radeon_cp_swap_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:728:1: warning: no previous rototype for ‘radeon_cp_clear_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:729:1: warning: no previous prototype for ‘radeon_cp_vertex_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:730:1: warning: no previous rototype for ‘radeon_cp_indices_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:731:1: warning: no previous prototype for ‘radeon_cp_texture_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:732:1: warning: no previous prototype for ‘radeon_cp_stipple_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:733:1: warning: no previous prototype for ‘radeon_cp_indirect_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:734:1: warning: no previous prototype for ‘radeon_cp_vertex2_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:735:1: warning: no previous prototype for ‘radeon_cp_cmdbuf_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:736:1: warning: no previous prototype for ‘radeon_cp_getparam_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:737:1: warning: no previous prototype for ‘radeon_cp_flip_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:738:1: warning: no previous prototype for ‘radeon_mem_alloc_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:739:1: warning: no previous prototype for ‘radeon_mem_free_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:740:1: warning: no previous rototype for ‘radeon_mem_init_heap_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:741:1: warning: no previous rototype for ‘radeon_irq_emit_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:742:1: warning: no previous prototype for ‘radeon_irq_wait_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:743:1: warning: no previous rototype for ‘radeon_cp_setparam_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:744:1: warning: no previous prototype for ‘radeon_surface_alloc_kms’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_kms.c:745:1: warning: no previous prototype for ‘radeon_surface_free_kms’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Mark function r600_audio_set_dto() as static in drm/radeon/r600_hdmi.c
because it is not used outside this file.

This eliminates the following warning in drm/radeon/r600_hdmi.c:
drivers/gpu/drm/radeon/r600_hdmi.c:253:6: warning: no previous prototype for ‘r600_audio_set_dto’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Mark function radeon_gem_set_domain() as static in
drm/radeon/radeon_gem.c because it is not used outside this file.

This eliminates the following warning in drm/radeon/radeon_gem.c:
drivers/gpu/drm/radeon/radeon_gem.c:89:5: warning: no previous prototype for ‘radeon_gem_set_domain’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Mark function radeon_info_ioctl() as static in drm/radeon/radeon_kms.c
because it is not used outside this file.

This eliminates the following warning in drm/radeon/radeon_kms.c:
drivers/gpu/drm/radeon/radeon_kms.c:194:5: warning: no previous prototype for ‘radeon_info_ioctl’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Mark functions radeon_doorbell_init() and radeon_doorbell_fini() as
static in drm/radeon/radeon_device.c because they are not used outside
this file.

This eliminates the following warning in drm/radeon/radeon_device.c:
drivers/gpu/drm/radeon/radeon_device.c:252:5: warning: no previous prototype for ‘radeon_doorbell_init’ [-Wmissing-prototypes]
drivers/gpu/drm/radeon/radeon_device.c:281:6: warning: no previous prototype for ‘radeon_doorbell_fini’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Mark function radeon_bo_clear_va() as static in
drm/radeon/radeon_object.c because it is not used outside this file.

This eliminates the following warning in drm/radeon/radeon_object.c:
drivers/gpu/drm/radeon/radeon_object.c:49:6: warning: no previous prototype for ‘radeon_bo_clear_va’ [-Wmissing-prototypes]
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

The hw i2c engines are disabled by default as the
current implementation is still experimental.  Print
a warning when users enable it so that it's obvious
when the option is enabled.

v2: check for non-0 rather than 1
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org