When I reworked this code, I messed up num rb count.

v2: use hweight32
Reviewed-by: NKen Wang <Qingquing.Wang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Merge branch 'drm-rockchip-next-2016-02-18' of https://github.com/markyzq/kernel-drm-rockchip into drm-next

add Innosilicon HDMI support.

* 'drm-rockchip-next-2016-02-18' of https://github.com/markyzq/kernel-drm-rockchip:
  dt-bindings: add document for Innosilicon HDMI on Rockchip platform
  drm/rockchip: hdmi: add Innosilicon HDMI support

This pull request brings in overlay plane support for vc4.

* tag 'drm-vc4-next-2016-02-17' of github.com:anholt/linux:
  drm/vc4: Add support for YUV planes.
  drm/vc4: Add support a few more RGB display plane formats.
  drm/vc4: Add support for scaling of display planes.
  drm/vc4: Fix which value is being used for source image size.
  drm/vc4: Add more display planes to each CRTC.
  drm/vc4: Make the CRTCs cooperate on allocating display lists.
  drm/vc4: Add a proper short-circut path for legacy cursor updates.
  drm/vc4: Move the plane clipping/scaling setup to a separate function.
  drm/vc4: Add missing __iomem annotation to hw_dlist.
  drm/vc4: Improve comments on vc4_plane_state members.

First radeon and amdgpu pull request for 4.6.  Highlights:
- ACP support for APUs with i2s audio
- CS ioctl optimizations
- GPU scheduler optimizations
- GPUVM optimizations
- Initial GPU reset support (not enabled yet)
- New powerplay sysfs interface for manually selecting clocks
- Powerplay fixes
- Virtualization fixes
- Removal of hw semaphore support
- Lots of other misc fixes and cleanups

* 'drm-next-4.6' of git://people.freedesktop.org/~agd5f/linux: (118 commits)
  drm/amdgpu: Don't call interval_tree_remove in amdgpu_mn_destroy
  drm/amdgpu: Fix race condition in amdgpu_mn_unregister
  drm/amdgpu: cleanup gem init/finit
  drm/amdgpu: rework GEM info printing
  drm/amdgpu: print the GPU offset as well in gem_info
  drm/amdgpu: optionally print the pin count in gem_info as well
  drm/amdgpu: print the BO size only once in amdgpu_gem_info
  drm/amdgpu: print pid as integer
  drm/amdgpu: remove page flip work queue v3
  drm/amdgpu: stop blocking for page filp fences
  drm/amdgpu: stop calling amdgpu_gpu_reset from the flip code
  drm/amdgpu: remove fence reset detection leftovers
  drm/amdgpu: Fix race condition in MMU notifier release
  drm/radeon: Fix WARN_ON if DRM_DP_AUX_CHARDEV is enabled
  drm/amdgpu/vi: move uvd tiling config setup into uvd code
  drm/amdgpu/vi: move sdma tiling config setup into sdma code
  drm/amdgpu/cik: move uvd tiling config setup into uvd code
  drm/amdgpu/cik: move sdma tiling config setup into sdma code
  drm/amdgpu/gfx7: rework gpu_init()
  drm/amdgpu/gfx: clean up harvest configuration (v2)
  ...

Misc stuff all over:
- more mode_fixup removal from Carlos, there's another final pile still
  left.
- final bits of vgaswitcheroo from Lukas for apple gmux, we're still
  discussing an api cleanup patch to make it a bit more abuse-safe as a
  follow-up
- dp aux interface for userspace for tools&tests from Rafael Antognolli
- actual interface parts for dma-buf flushing for userspace mmap
- few small bits all over

- vgaswitcheroo support for apple gmux from Lukas Wunner
- checks for ->mode_fixup in non-atomic helpers from Carlos Palminha, plus
  removing dummy funcs from drivers. Carlos promised to follow up with
  more, since there's lots more silly dummy functions around.
- dma-buf patches from Tiago, except the ioctl itself (that needed a
  respin to address review from David Herrmann)
- encoder mask for atomic from Maarten
- bunch of random things all over.

* tag 'topic/drm-misc-2016-02-18' of git://anongit.freedesktop.org/drm-intel: (57 commits)
  drm/udl: Use module_usb_driver
  drm: fixes crct set_mode when crtc mode_fixup is null.
  drm/tilcdc: removed optional dummy encoder mode_fixup function.
  drm/sti: removed optional dummy encoder mode_fixup function.
  drm/rockchip: removed optional dummy encoder mode_fixup function.
  drm/qxl: removed optional dummy encoder mode_fixup function.
  drm/mgag200: removed optional dummy encoder mode_fixup function.
  drm/msm/mdp: removed optional dummy encoder mode_fixup function.
  drm/imx: removed optional dummy encoder mode_fixup function.
  drm/gma500: removed optional dummy encoder mode_fixup function.
  drm/radeon: removed optional dummy encoder mode_fixup function.
  drm/cirrus: removed optional dummy encoder mode_fixup function.
  drm/bochs: removed optional dummy encoder mode_fixup function.
  drm/ast: removed optional dummy encoder mode_fixup function.
  drm/amdgpu: removed optional dummy encoder mode_fixup function.
  drm/exynos: removed optional dummy encoder mode_fixup function.
  drm/udl: removed optional dummy encoder mode_fixup function.
  drm/virtio: removed optional dummy encoder mode_fixup function.
  drm/fb_helper: Use add_one_connector in add_all_connectors.
  drm/fb_helper: Use correct allocation count for arrays.
  ...

Signed-off-by: NYakir Yang <ykk@rock-chips.com>
Acked-by: NRob Herring <robh@kernel.org>

The Innosilicon HDMI is a low power HDMI 1.4 transmitter
IP, and it have been integrated on some rockchip CPUs
(like RK3036, RK312x).
Signed-off-by: NYakir Yang <ykk@rock-chips.com>
Tested-by: NHeiko Stuebner <heiko@sntech.de>

rbtree_postorder_for_each_entry_safe can skip over some entries if
the tree is rebalanced in interval_tree_remove. interval_tree_remove
is also redundant when the tree is just about to be freed.
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>

Exchange locking order of adev->mn_lock and mm_sem, so that
rmn->mm->mmap_sem can be taken safely, protected by adev->mn_lock,
when amdgpu_mn_destroy runs concurrently.
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>

Macro module_usb_driver is used for drivers whose init and exit paths
only register and unregister to usb API. So remove boilerplate code to
make code simpler by using module_usb_driver.

This change was made with the help of the following Coccinelle
semantic patch:

//<smpl>
@a@
identifier f, x;
@@
-static f(...) { return usb_register(&x); }

@b depends on a@
identifier e, a.x;
@@
-static e(...) { usb_deregister(&x); }

@c depends on a && b@
identifier a.f;
declarer name module_init;
@@
-module_init(f);

@d depends on a && b && c@
identifier b.e, a.x;
declarer name module_exit;
declarer name module_usb_driver;
@@
-module_exit(e);
+module_usb_driver(x);
//</smpl>
Signed-off-by: NAmitoj Kaur Chawla <amitoj1606@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160217121327.GA29682@amitoj-Inspiron-3542

Pull in pile of patches from Carlos to remove now redundant mode_fixup
hooks for encoders.
Signed-off-by: NDaniel Vetter <daniel.vetter@intel.com>

Remove the double housekeeping and use something sane to
forcefuly delete BOs on unload.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>

Print BOs grouped per client.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>

To easily find which memory is used.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>

Usefull when debugging page flipping.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>

Splitting it into KB/MB is just confusing.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>

Not sure why somebody thought that this is a long.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>

Just use the system queue now that we don't block any more.

v2: handle DAL as well.
v3: agd: split DAL changes out
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMykola Lysenko <mykola.lysenko@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com> (v1)

Just register an callback and reschedule the work item if necessary.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>

We don't return -EDEADLK any more.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>

wait_event() never returns before the fence was signaled.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NAlex Deucher <alexander.deucher@amd.com>

The release notifier can get called a second time from
mmu_notifier_unregister depending on a race between
__mmu_notifier_release and amdgpu_mn_destroy. Use
mmu_notifier_unregister_no_release to avoid this.
Signed-off-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>

This supports 420 and 422 subsampling with 2 or 3 planes, tested with
modetest.  It doesn't set up chroma subsampling position (which it
appears KMS doesn't deal with yet).

The LBM memory is overallocated in many cases, but apparently the docs
aren't quite correct and I'll probably need to look at the hardware
source to really figure it out.
Signed-off-by: NEric Anholt <eric@anholt.net>

These were all touch-tested with modetest.
Signed-off-by: NEric Anholt <eric@anholt.net>

This implements a simple policy for choosing scaling modes
(trapezoidal for decimation, PPF for magnification), and a single PPF
filter (Mitchell/Netravali's recommendation).
Signed-off-by: NEric Anholt <eric@anholt.net>

This doesn't matter yet since we only allow 1:1 scaling, but the
comment clearly says we should be using the source size.
Signed-off-by: NEric Anholt <eric@anholt.net>

Previously we only did the primary and cursor plane, but overlay
planes are useful and just require this setup to add, since all planes
go into the HVS display list in the same way.
Signed-off-by: NEric Anholt <eric@anholt.net>

So far, we've only ever lit up one CRTC, so this has been fine.  To
extend to more displays or more planes, we need to make sure we don't
run our display lists into each other.
Signed-off-by: NEric Anholt <eric@anholt.net>

Previously, on every modeset we would allocate new display list
memory, recompute changed planes, write all of them to the new memory,
and pointed scanout at the new list (which will latch approximately at
the next line of scanout).  We let
drm_atomic_helper_wait_for_vblanks() decide whether we needed to wait
for a vblank after a modeset before cleaning up the old state and
letting the next modeset proceed, and on legacy cursor updates we
wouldn't wait.  If you moved the cursor fast enough, we could
potentially wrap around the display list memory area and overwrite the
existing display list while it was still being scanned out, resulting
in the HVS scanning out garbage or just halting.

Instead of making cursor updates wait for scanout to move to the new
display list area (which introduces significant cursor lag in X), we
just rewrite our current display list.
Signed-off-by: NEric Anholt <eric@anholt.net>

As we add actual scaling, this is going to get way more complicated.
Signed-off-by: NEric Anholt <eric@anholt.net>

This is the pointer to the HVS device's memory where we stored the
contents of *dlist.
Signed-off-by: NEric Anholt <eric@anholt.net>

Signed-off-by: NEric Anholt <eric@anholt.net>

This patch set nukes all the dummy crtc mode_fixup implementations.
(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/9d41105dee6632b4bb50e9555f2196ac249b9fce.1455630967.git.palminha@synopsys.com

mode_fixup function for encoder drivers became optional with patch
http://patchwork.freedesktop.org/patch/msgid/1455106522-32307-1-git-send-email-palminha@synopsys.com

This patch set nukes all the dummy mode_fixup implementations.

(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/4d838f580cf81068a4df2500a096d66f06f3ad37.1455540137.git.palminha@synopsys.com

mode_fixup function for encoder drivers became optional with patch
http://patchwork.freedesktop.org/patch/msgid/1455106522-32307-1-git-send-email-palminha@synopsys.com

This patch set nukes all the dummy mode_fixup implementations.

(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Acked-by: NVincent Abriou <vincent.abriou@st.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/7f47c6a7b00e4f16af672ebf3a277e31ad117e21.1455540137.git.palminha@synopsys.com

mode_fixup function for encoder drivers became optional with patch
http://patchwork.freedesktop.org/patch/msgid/1455106522-32307-1-git-send-email-palminha@synopsys.com

This patch set nukes all the dummy mode_fixup implementations.

(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Acked-by: NMark Yao <mark.yao@rock-chips.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/cae559aa2c04a906c21ed5ebe4861f92440e6910.1455540137.git.palminha@synopsys.com

mode_fixup function for encoder drivers became optional with patch
http://patchwork.freedesktop.org/patch/msgid/1455106522-32307-1-git-send-email-palminha@synopsys.com

This patch set nukes all the dummy mode_fixup implementations.

(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/f35bc322f7af69ba0fea734d58b4daf5e0cd9786.1455540137.git.palminha@synopsys.com

mode_fixup function for encoder drivers became optional with patch
http://patchwork.freedesktop.org/patch/msgid/1455106522-32307-1-git-send-email-palminha@synopsys.com

This patch set nukes all the dummy mode_fixup implementations.

(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/c5852d59a8890c3570ce97d16c0714a71eb61651.1455540137.git.palminha@synopsys.com

mode_fixup function for encoder drivers became optional with patch
http://patchwork.freedesktop.org/patch/msgid/1455106522-32307-1-git-send-email-palminha@synopsys.com

This patch set nukes all the dummy mode_fixup implementations.

(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/77692d9d34c2ed6a035f36d377d3544dbe100114.1455540137.git.palminha@synopsys.com

mode_fixup function for encoder drivers became optional with patch
http://patchwork.freedesktop.org/patch/msgid/1455106522-32307-1-git-send-email-palminha@synopsys.com

This patch set nukes all the dummy mode_fixup implementations.

(made on top of Daniel topic/drm-misc branch)
Signed-off-by: NCarlos Palminha <palminha@synopsys.com>
Acked-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/8bf274e8f6908142a9f940d3f2913e4a735e0caa.1455540137.git.palminha@synopsys.com