ARM: dma-mapping: add support for DMA_ATTR_FORCE_CONTIGUOUS attribute

This patch adds support for DMA_ATTR_FORCE_CONTIGUOUS attribute for
dma_alloc_attrs() in IOMMU-aware implementation. For allocating physically
contiguous buffers Contiguous Memory Allocator is used.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

common: DMA-mapping: add DMA_ATTR_FORCE_CONTIGUOUS attribute

This patch adds DMA_ATTR_FORCE_CONTIGUOUS attribute to the DMA-mapping
subsystem.

By default DMA-mapping subsystem is allowed to assemble the buffer
allocated by dma_alloc_attrs() function from individual pages if it can
be mapped as contiguous chunk into device dma address space. By
specifing this attribute the allocated buffer is forced to be contiguous
also in physical memory.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>

drm: hold event_lock while accessing vblank_event_list

Currently the only users of drm_vblank_off() are i915 and gma500,
neither of which holds the event_lock when calling this function.
Fix this by holding the event_lock while traversing the list.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

drm/exynos: fix lockdep for event_lock wrt. vbl_time_lock

Currently the exynos driver calls drm_vblank_off() with the event_lock
held, while drm_vblank_off() will lock vbl_time and vblank_time_lock.
This lock dependency chain conflicts with the one in drm_handle_vblank()
where we first lock vblank_time_lock and then the event_lock.

Fix this by removing the above drm_vblank_off() calls which are in fact
never executed: drm_dev->vblank_disable_allowed is only ever non-zero
during driver init, until it's set in {fimd,vidi}_subdrv_probe. Both the
driver init and open code is protected by drm_global_mutex, so the
earliest page flip ioctl can happen only after vblank_disable_allowed is
set to 1. Thus {fimd,vidi}_finish_pageflip - with pending flip events -
will always get called with vblank_disable_allowed being 1.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

drm/exynos: call drm_vblank_put for each queued flip event

It's guaranteed that for each event on pageflip_event_list we have
called drm_vblank_get() - see exynos_drm_crtc_page_flip() - so checking
for this is redundant.

Also we need to call drm_vblank_put() for each event on the list, not
only once, otherwise we'd leak vblank references if there are multiple
events on the list.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

drm/exynos: hold event_lock while accessing pageflip_event_list

Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

drm/exynos: Fix potential NULL pointer dereference in exynos_drm_encoder.c

Check overlay_ops is not NULL as checked in the previous 'if' condition.
Fixes the following smatch error:
drivers/gpu/drm/exynos/exynos_drm_encoder.c:509 exynos_drm_encoder_plane_disable()
error: we previously assumed 'overlay_ops' could be null (see line 499)

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

drm/exynos: Make exynos4/5_fimd_driver_data static

Fixes the following sparse warnings:
drivers/gpu/drm/exynos/exynos_drm_fimd.c:65:25: warning:
symbol 'exynos4_fimd_driver_data' was not declared. Should it be static?
drivers/gpu/drm/exynos/exynos_drm_fimd.c:69:25: warning:
symbol 'exynos5_fimd_driver_data' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

drm/exynos: fix overlay updating issue

Chagelog v2:
Move encoder's dpms updating into exynos_drm_encoder_commit
function because when crtc's dpms is updated, encoder's dpms
is updated also. This would induce the issue that encoder
isn't disabled after crtc is disabled.

Changelog v1:
This patch fixes a issue that overlay data aren't applied
to real hardware when dpms off goes to on after setcrtc
was requested like below,
    dpms off -> setcrtc -> dpms off -> dpms on

For this, it makes encoder's dpms to be updated when
setcrtc is requested.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

drm/exynos: remove unnecessary code.

plane->fb will be set to new fb after update_plane callback is called
by drm_mode_set_plane()

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

drm/exynos: fix linux framebuffer address setting.

With iommu, buffer->dma_addr has device addres so this patch
fixes for physical address to be set to fix.smem_start always.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

Merge branch 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel into drm-next

Daniel writes:
Besides the big item of lifting the "preliminary hw support" tag from the
 Haswell code, just small bits&pieces all over:
 - Leftover Haswell patches and some fixes from Paulo
 - LyncPoint PCH support (for hsw)
 - OOM handling improvements from Chris Wilson
 - connector property and send_vblank_event refactorings from Rob Clark
 - random pile of small fixes

 Note that the send_vblank refactorings will cause some locking WARNs to
 show up. Imre has fixed that up, but since all the driver changes outside
 of the drm core have been for exonys, those four patches are merged
 through the exonys-next tree.

Meh, I've forgotten to cherry-pick an important fix from Ben for a
regression in the 3.8 gen6+ gtt code. New pull request below. While I'm at
it, the hdmi VIC patch for the drm edid code is still in my queue, I'll
send you that in the next 3.8-fixes pull.

* 'for-airlied' of git://people.freedesktop.org/~danvet/drm-intel: (33 commits)
  drm/i915: Fix pte updates in ggtt clear range
  drm/i915: promote Haswell to full support
  drm/i915: Report the origin of the LVDS fixed panel mode
  drm/i915: LVDS fallback to fixed-mode if EDID not present
  drm/i915/sdvo: kfree the intel_sdvo_connector, not drm_connector, on destroy
  drm/i915: drm_connector_property -> drm_object_property
  drm/i915: use drm_send_vblank_event() helper
  drm/i915: Use pci_resource functions for BARs.
  drm/i915: Borrow our struct_mutex for the direct reclaim
  drm/i915: Defer assignment of obj->gtt_space until after all possible mallocs
  drm/i915: Apply the IBX transcoder A w/a for HDMI to SDVO as well
  drm/i915: implement WaMbcDriverBootEnable on Haswell
  drm/i915: fix intel_ddi_get_cdclk_freq for ULT machines
  drm/i915: make the panel fitter work on pipes B and C on Haswell
  drm/i915: make the panel fitter work on pipes B and C on IVB
  drm/i915: don't intel_crt_init if DDI A has 4 lanes
  drm/i915: make DP work on LPT-LP machines
  drm/i915: fix false positive "Unclaimed write" messages
  drm/i915: use cpu/pch transcoder on intel_enable_pipe
  drm/i915: don't limit Haswell CRT encoder to pipe A
  ...

drm/i915: Fix pte updates in ggtt clear range

This bug was introduced by me:
commit e76e9aebcdbfebae8f4cd147e3c0f800d36e97f3
Author: Ben Widawsky <ben@bwidawsk.net>
Date:   Sun Nov 4 09:21:27 2012 -0800

    drm/i915: Stop using AGP layer for GEN6+

The existing code uses memset_io which follows memset semantics in only
guaranteeing a write of individual bytes. Since a PTE entry is 4 bytes,
this can only be correct if the scratch page address is 0.

This caused unsightly errors when we clear the range at load time,
though I'm not really sure what the heck is referencing that memory
anyway. I caught this is because I believe we have some other bug where
the display is doing reads of memory we feel should be cleared (or we
are relying on scratch pages to be a specific value).

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drm: tegra: Add maintainers entry

Add myself as the maintainer of the NVIDIA Tegra DRM driver.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm/pci: add missing variable initialization

Fixed build warning as below:

drivers/gpu/drm/drm_pci.c: In function 'drm_pcie_get_speed_cap_mask':
drivers/gpu/drm/drm_pci.c:496:9: warning: 'lnkcap' may be used uninitialized in this function [-Wuninitialized]
drivers/gpu/drm/drm_pci.c:497:10: warning: 'lnkcap2' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drm/nouveau/device: Remove duplicate inclusion of core/device.h

core/device.h was included twice.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: remove duplicate inclusion of nouveau_ttm.h

nouveau_ttm.h was included twice.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/fifo: trigger engine context unload before zeroing context pointer

Fixes a PCE0 page fault noticed on NVD9 during module unload.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: prevent log mangling

On 3.7-rc6, add missing newline to to prevent the following kernel log
line getting appended to the current one after switching the integrated
GPU and suspending the discrete GPU.

Signed-off-by: Daniel J Blueman <daniel@quora.org>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: unpin various bo's before destroying

These objects leak VRAM - but only on module unload.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: unpin pushbuffer bo before destroying it

Fixes GART leak (as accounted by nouveau_drm.gem.gart_available).

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: remove misleading comment from nouveau_prime_new

Copy/pasted from nouveau_gem_new.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: raise reporting levels of some messages

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/core: fix the assumption that NVDEV_XXXX is always under 32

It fixes a bug that would have been introduced when adding more
sudevs/engines.

Signed-off-by: Martin Peres <martin.peres@labri.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/ppp: remove nouveau_ppp base class

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

nve0/ppp: enable support via nvc0's implementation

NVIDIA also appear to use the same class on Fermi/Kepler for PPP.

Will allow use of the engine if firmware (nvXX_fuc086) provided.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

nvc0/ppp: initial implementation of engine

Will allow use of the engine if firmware (nvXX_fuc086) provided.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

nvc0/vp: initial implementation of engine

Will allow use of the engine if firmware (nvXX_fuc085) provided.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

nvc0/bsp: initial implementation of engine

Will allow use of the engine if firmware (nvXX_fuc084) provided.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/vdec: remove nouveau_{bsp,vp} base classes, use nouveau_engine directly

Later chipsets use falcon anyway, and I can't currently see a good need
for a shared base class.

PPP will get the same treatment once Maarten's patches are merged.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nve0/fifo: allow for future binding of ppp contexts

No support for the class yet, but will be pulled in with Maarten's Fermi
vdec patches.  The Kepler PPP class is identical.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nve0/vp: implement initial support for engine

Will allow use of the engine if firmware (nvXX_fuc085) provided.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nve0/bsp: implement initial support for engine

Will allow use of the engine if firmware (nvXX_fuc084) provided.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nve0: allow specification of channel engine type in abi16 call

Previously, if either vram/gart handles were specified as ~0, the ioctl
call would fail.  In order to hack engine selection into the ioctl for
kepler, we now define (fb_ctxdma_handle == ~0) to mean "engine mask is
in tt_ctxdma_handle".

This approach also allows new userspace to detect lack of support for
non-PGRAPH channels on older kernels.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/core: implement shortcut for simple engctx construction

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvc0/copy: share interrupt handler with nva3

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/fb: implement trap handler as subdev interrupt handler

nv50_fb_trap() will now be called automagically by the mc intr handler,
rather than each engine's handler having to check for traps manually.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/mc: allow calling of multiple handlers for a give intr bit

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/copy: remove nouveau_copy base class

nva3/nvc0 are using falcon, nve0 is now using engine directly.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvc0/copy: use nouveau_falcon base class

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nva3/copy: use nouveau_falcon base class

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv98/crypt: use nouveau_falcon base class

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: initial falcon (fuc) engine base class implementation

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: convert to dev_pm_ops

This is a precursor to dynamic power management support for nouveau,

we need to use pm ops for that, so first convert the driver to using pm ops
interfaces.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: Add interface to detect optimus and v1 support

This is required to decide if we can auto-powerdown and how to implement it.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/disp: add support for 10bpc over DisplayPort

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: rename nvd0_display to nv50_display to reflect reality since merge

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50-nvc0: switch to common disp impl, removing previous version

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: implement support for colour vibrance control

Ported from original nv50 commit by Christoph, with added support for the
setting on later chipsets.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: remove fetching of capabilities report

Unused, and caused a race with evo_sync().  Will revisit using it properly
later on.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: enable support for older display classes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: support creation of fb dma objects on older chipsets

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: implement support for older DISP_SYNC classes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: implement sor support for older display classes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: implement dac support for older display classes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: start implementing support for older display classes

Currently unused, but checkpointing the merged head handling routines.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/dp: remove last bits of VBIOS parsing from DRM code

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/dp: move core link training calls to common code

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: remove (now obsolete) BIT U table parsing from DRM code

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/disp: move remaining interrupt handling into core

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: calculate U script id in supervisor interrupt

This is like we do on nv50:nvd9 already.  There's been no problems seen
yet with using this *seemingly* scratch register to store the value, but
we won't be able to do this anymore once nv50's code is merged.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv84/disp: move hdmi control into core

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nva3/disp: move hda codec handling to core

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/disp: move dp link training helpers into core

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/disp: call into core for dac load detection

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/disp: call into core to handle dac/sor power state changes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/disp: allocate display from driver core

EVO channels still handled "manually", this won't be ported here, and
will instead be held off until nv50_display/nvd0_display are merged.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/bios: implement some dcb output entry parsing/matching functions

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: handle DP transfer unit setup from second supervisor interrupt

This is what we've done forever in nv50_display.c, and also allows the
last direct MMIO accesses to be removed from nvd0_display.c.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: move HDMI control to core

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: move HDA codec setup to core

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: call into core to handle dac power state changes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: call into core to handle sor power state changes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: move link training helpers into core as display methods

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/core: allow representing method ranges in nouveau_omthds

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/core: expose full method calling capabilities with nv_exec

nv_call() just allows mthd+u32 submission, nv_exec() exposes the
mthd+data+size interface which will be used in future commits.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/bios: implement "full" BIT 'd' table (and subtable) parsing in core

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: move remaining interrupt handling to core

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/core: add some missing subdev/engine disable flags

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/bios: implement BIT 'U' table (and subtable) parsing in core

This will, in the near future, replace what's currently in the DRM
nouveau_bios.c code.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: allocate display and evo channels from driver core

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: run mode_config destructor before destroying internal display state

Later changes will depend on being able to pull down CRTCs etc with the
master display state still intact.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/drm/nvd0/disp: display->disp

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/disp: introduce a nvd0_head as a subclass of nouveau_crtc

This will be used instead of storing a heap of per-head data (such as evo
channels) in nvd0_display in some other way.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0-nve0/disp: initial implementation of evo channel classes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/disp: allow PCI_US pushbuf binding

drm/nv50/disp: initial implementation of the various channel object classes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/disp: enable interrupts and setup memory area

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/disp: copy caps to evo

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/disp: create skeleton display/channel object classes

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/dmaobj: initial bind() method implementation

Currently unused, and rudimentary.  Lots to figure out here still, but
this is sufficient for what disp will need.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvc0/dmaobj: implement initial bind() method

Currently unused.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nv50/dmaobj: extend class to allow gpu-specific attributes to be defined

disp is going to need to be able to create more specific dma objects
than was previously possible.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvd0/dmaobj: duplicate fermi class, will diverge real soon now

The hardware dmaobj format completely changed in GF119, so these will
need a separate implementation.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nvc0/dmaobj: stub bind function for now so we can call unconditionally

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/dmaobj: move parent class check to bind() method

Otherwise when nvc0- gains a bind() method (disp needs it), the fifo
engine will attempt to create a dma object for the push buffer, which
is unnecessary on fermi.

The only sane place to put these checks is in the bind method itself,
and have it unconditionally called from wherever it might be needed.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/dmaobj: merge everything except ctor and bind together

Simplifies things a little, and currently no reason to need
chipset-specific dmaobj constructors.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: pass address to object accessor functions as u64

Will be required by future work.  Make the API change now to catch any
(but hopefully none) unexpected fallout.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau/gpio: place upper limit on using old-school tvdac bios data

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

drm/nouveau: remove newline-only NV_DEBUG calls

This used to output the function name, now doesn't, so just looks
stupid.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>