While the engine works on a runqueue node it does memory access to
the buffers associated with that node.
Make sure that the engine is idle when g2d_close() and/or
g2d_remove() are called, i.e. buffer associated with the process (for
g2d_close()), or all buffers (for g2d_remove()) can be safely be
unmapped.

We have to take into account that the engine might be in an undefined
state, i.e. it hangs and doesn't become idle. In this case, we issue
a hardware reset to return the hardware and the driver context into a
proper state.
Signed-off-by: NTobias Jakobi <tjakobi@math.uni-bielefeld.de>
Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

The driver might be closed (and/or removed) while there are still
nodes queued for processing.
Make sure to remove these nodes, which means all of them in
the case of g2d_remove() and only those belonging to the
corresponding process in g2d_close().
Signed-off-by: NTobias Jakobi <tjakobi@math.uni-bielefeld.de>
Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Do all pm_runtime_{get,put}() calls in the runqueue worker.
Also keep track of the engine's idle/busy state.
Signed-off-by: NTobias Jakobi <tjakobi@math.uni-bielefeld.de>
Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

This reverts commit b05984e2.

The change, i.e. merging the sleep and runpm operations, produces
a deadlock situation:
(1) exynos_g2d_exec_ioctl() prepares a runqueue node and
    calls g2d_exec_runqueue()
(2) g2d_exec_runqueue() calls g2d_dma_start() which gets
    runtime PM sync
(3) runtime PM core calls g2d_runtime_resume()
(4) g2d_runtime_resume() calls g2d_exec_runqueue(), which
    loops back to (2)

Due to mutexes that are in place, a deadlock situation is created.
Signed-off-by: NTobias Jakobi <tjakobi@math.uni-bielefeld.de>
Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Exynos DRM framework handled page-flip event with custom code.
The patch replaces it with drm-core vblank queue.
Signed-off-by: NAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

We get 1 warning when building kernel with W=1:
drivers/gpu/drm/exynos/exynos_dp.c:46:5: warning: no previous prototype for 'exynos_dp_crtc_clock_enable' [-Wmissing-prototypes]

In fact, this function is only used in the file in which it is
declared and don't need a declaration, but can be made static.
So this patch marks it 'static'.
Signed-off-by: NBaoyou Xie <baoyou.xie@linaro.org>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

In case of some platforms fimd clocks can be configured to
very low values, as a result refresh rate can be very low and
driver/drm-core will timeout waiting for vblanks, it will result
in premature removal of framebuffers and will cause oopses.
The patch adds atomic_check callback to fimd to prevent setting
such modes.
Reported-by: NTobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: NAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Exynos DRM devices update their registers at vblank time. Exynos-DRM uses
custom mechanism to wait for vblank. This mechanism is error prone -
variables are not updated atomically. As a result in certain circumstances
user space can try to free buffers which are still in use by hardware,
in such cases IOMMU can throw OOPS.
The patch instead of fixing the mechanism replaces it with drm core helper.
Signed-off-by: NAndrzej Hajda <a.hajda@samsung.com>
Reviewed-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

VIDI driver uses fake vblank handler to generate vblank events.
It was implemented using worker which slept for vblank time, additionally
it did not work if there were no page flips. The patch replaces it with
timer, uses drm_crtc_vblank_(on|off) helpers to manage it and fixes
behavior for non-page-flip cases.
This change allows further improvements of vblank in exynos-drm framework.
Signed-off-by: NAndrzej Hajda <a.hajda@samsung.com>
Reviewed-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Apply some 'make-up' in g2d_probe().
Signed-off-by: NTobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

A simple while loop should do the same here.
Signed-off-by: NTobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

The mixer context struct already has a 'flags' field, so
we can use it to store the 'interlace', 'vp_enabled' and
'has_sclk' booleans.
We use the non-atomic helper functions to access these bits.
Signed-off-by: NTobias Jakobi <tjakobi@math.uni-bielefeld.de>
Reviewed-by: NAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

The helper, devm_regulator_bulk_get() initializes the consumer as NULL,
so this code can be ignored.
Signed-off-by: NMilo Kim <woogyom.kim@gmail.com>
Reviewed-by: NAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Paring DT properties and getting PHY IO (memory mapped or I2C) in one
function.
Signed-off-by: NMilo Kim <woogyom.kim@gmail.com>
Reviewed-by: NAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Paring DT properties and getting the I2C adapter in one function.
Signed-off-by: NMilo Kim <woogyom.kim@gmail.com>
Reviewed-by: NAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

Some additional fixes for 4.9:
- The rest of Christian's GTT rework which fixes a long standing bug
  in the GPUVM code among other things
- Changes to the pci shutdown callbacks for certain hypervisors
- Fix hpd interrupt storms on eDP panels which have the hpd interrupt
  enabled by the bios
- misc cleanups and bug fixes

* 'drm-next-4.9' of git://people.freedesktop.org/~agd5f/linux: (33 commits)
  drm/radeon: always apply pci shutdown callbacks
  drm/amdgpu: always apply pci shutdown callbacks (v2)
  drm/amdgpu: improve VM PTE trace points
  drm/amdgpu: fix GART_DEBUGFS define
  drm/amdgpu: free userptrs even if GTT isn't bound
  drm/amd/amdgpu: Various cleanups for DCEv6
  drm/amdgpu: fix BO move offsets
  drm/amdgpu: fix amdgpu_move_blit on 32bit systems
  drm/amdgpu: fix gtt_mgr bo's offset
  drm/amdgpu: fix initializing the VM BO shadow
  drm/amdgpu: fix initializing the VM last eviction counter
  drm/amdgpu: cleanup VM shadow BO unreferencing
  drm/amdgpu: allocate GTT space for shadow VM page tables
  drm/amdgpu: rename all rbo variable to abo v2
  drm/amdgpu: remove unused member from struct amdgpu_bo
  drm/amdgpu: add a custom GTT memory manager v2
  drm/amdgpu/dce6: disable hpd on local panels
  drm/amdgpu/dce8: disable hpd on local panels
  drm/amdgpu/dce11: disable hpd on local panels
  drm/amdgpu/dce10: disable hpd on local panels
  ...

drm/tegra: Changes for v4.9-rc1

One bugfix that avoids overwriting the Y plane base address when
displaying buffers with one of the YUV/YVU formats.

* tag 'drm/tegra/for-4.9-rc1' of git://anongit.freedesktop.org/tegra/linux:
  drm/tegra: Fix window[0] base address corruption

drm/panel: Changes for v4.9-rc1

Adds support for one more panel to the simple-panel driver, fixes up a
couple of delays and flags for existing panels and finally adds a new
driver for the DSI panel found on Nexus 7 devices.

* tag 'drm/panel/for-4.9-rc1' of git://anongit.freedesktop.org/tegra/linux:
  drm/panel: Add JDI LT070ME05000 WUXGA DSI Panel
  dt-bindings: Add JDI LT070ME05000 panel bindings
  drm/panel: simple: Fix bus_format for the Olimex LCD-OLinuXino-4.3TS
  drm/panel: simple-panel: Add delay timings for Starry KR122EA0SRA
  drm/panel: simple: Fix bus flags for Ortustech com43h4m85ulc
  drm/panel: simple: Add Innolux G101ICE-L01 panel
  drm/panel: simple: Add delay timing for Sharp LQ123P1JX31
  drm/dsi: Implement DCS set/get display brightness
  drm/dsi: Order DCS helpers by command code

We can't properly detect all hypervisors and we
need this to properly tear down the hardware.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

We can't properly detect all hypervisors and we
need this to properly tear down the hardware.

v2: trivial warning fix
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Use a separate one for the copy operation and
log all the interesting parameters.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Obviously missed during the rename.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This fixes a memory leak since binding GTT only on demand.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Signed-off-by: NTom St Denis <tom.stdenis@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

It's pretty pointless to get the offset first and then initialize it.

Should fix issues with the new GTT manager.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

This bug seems to be present for a very long time.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Signed-off-by: NFlora Cui <Flora.Cui@amd.com>
Reviewed-by: NHawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

We need to clear the shadows as well.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NEdward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Close a very small window where something can go wrong.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NEdward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Unreference the shadow BOs in the error path as well and drop the NULL checks.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Acked-by: NEdward O'Callaghan <funfunctor@folklore1984.net>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

We need to access those with the system domain.

Fixes fallout from only allocating GTT space on demand.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Just to cleanup some radeon leftovers.

sed -i "s/rbo/abo/g" drivers/gpu/drm/amd/amdgpu/*.c
sed -i "s/rbo/abo/g" drivers/gpu/drm/amd/amdgpu/*.h

v2: rebased
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Not used in a while.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Only allocate address space when we really need it.

v2: fix a typo, add correct function description,
    stop leaking the node in the error case.
Signed-off-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: NFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Otherwise we can get a hotplug interrupt storm when
we turn the panel off if hpd interrupts were enabled
by the bios.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=97471Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Otherwise we can get a hotplug interrupt storm when
we turn the panel off if hpd interrupts were enabled
by the bios.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=97471Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Otherwise we can get a hotplug interrupt storm when
we turn the panel off if hpd interrupts were enabled
by the bios.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=97471Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Otherwise we can get a hotplug interrupt storm when
we turn the panel off if hpd interrupts were enabled
by the bios.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=97471Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Used the wrong index to setup the phase shedding mask.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Used the wrong index to setup the phase shedding mask.
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org