use the i2c pads to drive SDA

Possible fix for fdo bug 26430
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Based on ddx patch by Andrzej Hajda.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>

Adjust modeset ordering to fix spread spectrum.
The spread spectrum command table relies on the
crtc routing to already be set in order to work
properly on some asics.

Should fix fdo bug 25741.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

The bios has alternate pll output limits for LCD panels.
If available, use these for pll divider calculations.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

The atom spread spectrum table does not always
disable ss.  Explicitly disable it and then use
the atom table to enable later if needed (currently
only used for LVDS).

Fixes display issues on some systems.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>

In somecase the atombios code might lead to infinite loop because
the GPU is in broken state, this patch track the jump history and
will abort atombios execution if we are stuck executing the same
jump for more than 1sec. Note that otherwise in some case we might
enter an infinite loop in the kernel context which is bad.
Signed-off-by: NJerome Glisse <jglisse@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

This should go to 2.6.33 stable as well.
Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>

Another undocumented rule of kernel folklore, no default y
config options anymore, apparantly hinting to distros they might
want something isn't preferred anymore.
Signed-off-by: NDave Airlie <airlied@redhat.com>

This driver is in *staging*. Fix the build with the switcheroo off.
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NAlex Deucher <alexdeucher@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

radeon was always including the atpx code unnecessarily, also core
switcheroo was including acpi headers.
Signed-off-by: NDave Airlie <airlied@redhat.com>

Type of iterator was promoted to unsigned long in 64bit systems.

*header is small structure so it is alwas safe to cast return value
of sizeof operator to int.
Signed-off-by: NPauli Nieminen <suokkos@gmail.com>

Signed-off-by: NDave Airlie <airlied@redhat.com>

* 'gpu-switcher' of /ssd/git//linux-2.6:
  vga_switcheroo: initial implementation (v15)
  fb: for framebuffer handover don't exit the loop early.

Conflicts:
	drivers/gpu/drm/i915/i915_dma.c
	drivers/gpu/drm/radeon/Makefile
	drivers/gpu/drm/radeon/radeon.h

Many new laptops now come with 2 gpus, one to be used for low power
modes and one for gaming/on-ac applications. These GPUs are typically
wired to the laptop panel and VGA ports via a multiplexer unit which
is controlled via ACPI methods.

4 combinations of systems typically exist - with 2 ACPI methods.
Intel/ATI - Lenovo W500/T500 - use ATPX ACPI method
ATI/ATI - some ASUS - use ATPX ACPI Method
Intel/Nvidia - - use _DSM ACPI method
Nvidia/Nvidia -  - use _DSM ACPI method.

TODO:
This patch adds support for the ATPX method and initial bits
for the _DSM methods that need to written by someone with
access to the hardware.
Add a proper non-debugfs interface - need to get some proper
testing first.

v2: add power up/down support for both devices
on W500 puts i915/radeon into D3 and cuts power to radeon.

v3: redo probing methods, no DMI list, drm devices call to
register with switcheroo, it tries to find an ATPX method on
any device and once there is two devices + ATPX it inits the
switcher.

v4: ATPX msg handling using buffers - should work on more machines

v5: rearchitect after more mjg59 discussion - move ATPX handling to
    radeon driver.

v6: add file headers + initial nouveau bits (to be filled out).

v7: merge delayed switcher code.

v8: avoid suspend/resume of gpu that is off

v9: rearchitect - mjg59 is always right. - move all ATPX code to
radeon, should allow simpler DSM also proper ATRM handling

v10: add ATRM support for radeon BIOS, add mutex to lock vgasr_priv

v11: fix bug in resuming Intel for 2nd time.

v12: start fixing up nvidia code blindly.

v13: blindly guess at finishing nvidia code

v14: remove radeon audio hacks - fix up intel resume more like upstream

v15: clean up printks + remove unnecessary igd/dis pointers

mount debugfs

/sys/kernel/debug/vgaswitcheroo/switch - should exist if ATPX detected
 + 2 cards.

DIS - immediate change to discrete
IGD - immediate change to IGD
DDIS - delayed change to discrete
DIGD - delayed change to IGD
ON - turn on not in use
OFF - turn off not in use

Tested on W500 (Intel/ATI) and T500 (Intel/ATI)
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

This commit "disabled" audio on RV710 and RV740 only, leaving RV770 and RV730.
The order is: CHIP_RV770 < CHIP_RV730 < CHIP_RV710 < CHIP_RV740.

It is not needed anway, as we do not even try to enable audio on RV770 and
newer. We call initializing function in r600.c only, not in rv770.c.

If there is something causing green tinges, it's HDMI mode setting for encoder
and I will try to debug that.
Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Signed-off-by: NRafał Miłecki <zajec5@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

* 'drm-radeon-testing' of /ssd/git/drm-radeon-next:
  drm/radeon: r100/r200 ums: block ability for userspace app to trash 0 page and beyond
  drm/ttm: fix function prototype to match implementation
  drm/radeon: use ALIGN instead of open coding it
  drm/radeon/kms: initialize set_surface_reg reg for rs600 asic

radeon's have a special ability to passthrough writes in their internal
memory space directly to PCI, this ability means that if some of the internal
surfaces like the depth buffer point at 0x0, any writes to these will
go directly to RAM at 0x0 via PCI busmastering.

Now mesa used to always emit clears after emitting state, since the
radeon mesa driver was refactored a year or more ago, it was found it
could generate a clear request without ever sending any setup state to the
card. So the clear would attempt to clear the depth buffer at 0x0, which
would overwrite main memory at this point. fs corruption ensues.

Also once one app did this correctly, it would never get set back to 0
making this messy to reproduce.

The kernel should block this from happening as mesa runs without privs,
though it does require the user be connected to the current running X session.

This patch implements a check to make sure the depth offset has been set
before a depth clear occurs and if it finds one it prints a warning and
ignores the depth clear request. There is also a mesa fix to avoid sending
the badness going into mesa.

This only affects r100/r200 GPUs in user modesetting mode.
Signed-off-by: NDave Airlie <airlied@redhat.com>

Fix function prototype to match its actual usage and implementation.

drivers/gpu/drm/ttm/ttm_bo_util.c:341:10: error: symbol 'ttm_io_prot' redeclared with different type (originally declared at include/drm/ttm/ttm_bo_driver.h:911) - incompatible argument 1 (different signedness)
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Cc:	David Airlie <airlied@linux.ie>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: NMatt Turner <mattst88@gmail.com>
Reviewed-by: NCorbin Simpson <MostAwesomeDude@gmail.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

rs600 asic was missing set_surface_reg callback leading to
oops.
Signed-off-by: NJerome Glisse <jglisse@redhat.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

* anholt/drm-intel-next: (103 commits)
  drm/i915: Use a dmi quirk to skip a broken SDVO TV output.
  drm/i915: enable/disable LVDS port at DPMS time
  drm/i915: check for multiple write domains in pin_and_relocate
  drm/i915: clean-up i915_gem_flush_gpu_write_domain
  drm/i915: reuse i915_gpu_idle helper
  drm/i915: ensure lru ordering of fence_list
  drm/i915: extract fence stealing code
  drm/i915: fixup active list locking in object_unbind
  drm/i915: reuse i915_gem_object_put_fence_reg for fence stealing code
  drm/i915: Add dependency on the intel agp module
  drm/i915: More s/IS_IRONLAKE/HAS_PCH_SPLIT for Sandybridge.
  drm/i915: Correct the Sandybridge chipset info structs.
  drm/i915: Disable the hangcheck reset on Sandybridge until we add support.
  drm/i915: Add a new mobile Sandybridge PCI ID.
  agp/intel: Add a new Sandybridge HB/IG PCI ID combo.
  drm/i915, agp/intel: Fix stolen memory size on Sandybridge
  drm/i915: Correct locking in the modesetting failure path, fixing a BUG_ON.
  drm/i915: Disable the surface tile swizzling on Sandybridge.
  agp/intel: Use a non-reserved value for the cache field of the PTEs.
  drm/i915: Fix sandybridge status page setup.
  ...

* nouveau/for-airlied: (25 commits)
  drm/nouveau: use ALIGN instead of open coding it
  drm/nouveau: report unknown connector state if lid closed
  drm/nouveau: support version 0x20 displayport tables
  drm/nouveau: Fix noaccel/nofbaccel option descriptions.
  drm/nv50: Implement ctxprog/state generation.
  drm/nouveau: use dcb connector types throughout the driver
  drm/nv50: enable hpd on any connector we know the gpio line for
  drm/nouveau: use dcb connector table for creating drm connectors
  drm/nouveau: construct a connector table for cards that lack a real one
  drm/nouveau: check for known dcb connector types
  drm/nouveau: parse dcb gpio/connector tables after encoders
  drm/nouveau: reorganise bios header, add dcb connector type enums
  drm/nouveau: merge nvbios and nouveau_bios_info
  drm/nouveau: merge parsed_dcb and bios_parsed_dcb into dcb_table
  drm/nouveau: rename parsed_dcb_gpio to dcb_gpio_table
  drm/nouveau: allow retrieval of vbios image from debugfs
  drm/nouveau: fix missing spin_unlock in failure path
  drm/nouveau: fix i2ctable bounds checking
  drm/nouveau: fix nouveau_i2c_find bounds checking
  drm/nouveau: fix pramdac_table range checking
  ...

Conflicts:
	drivers/gpu/drm/nouveau/nouveau_gem.c

* korg/drm-core-next:
  drm/ttm: handle OOM in ttm_tt_swapout
  drm/radeon/kms/atom: fix shr/shl ops
  drm/kms: fix spelling of "CLOCK"
  drm/kms: fix fb_changed = true else statement
  drivers/gpu/drm/drm_fb_helper.c: don't use private implementation of atoi()
  drm: switch all GEM/KMS ioctls to unlocked ioctl status.
  Use drm_gem_object_[handle_]unreference_unlocked where possible
  drm: introduce drm_gem_object_[handle_]unreference_unlocked

This IBM system has a multi-function SDVO card that reports both VGA
and TV, but the system has no TV connector.  The TV connector always
reported as connected, which would lead to poor modesetting choices.

https://bugs.freedesktop.org/show_bug.cgi?id=25787Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Tested-by: NVance <liangghv@sg.ibm.com>
Cc: stable@kernel.org
Signed-off-by: NEric Anholt <eric@anholt.net>

It would be good to disable the LVDS port when we shut down the panel
to save power.  We haven't done so until now because we had trouble
getting the right LVDS parameters from the BIOS.  I think we're past
that now, so enabling and disabling the port should be safe, though it
would probably be made cleaner with some additional changes to the
display code, where we also bang on the LVDS reg to set the pairing
correctly etc.

Seems to save a bit of power (up to 300mW in my basic wattsup
meter testing).
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

The assumption that an object has only ever one write domain is deeply
threaded into gem (it's even encoded the the singular of the variable
name). Don't let userspace screw us over.
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NEric Anholt <eric@anholt.net>

Now that we have an exact gpu write domain tracking, we don't need
to move objects to the active list ourself. i915_add_request will
take care of that under all circumstances.

Idea stolen from a patch by Chris Wilson <chris@chris-wilson.co.uk>.
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NEric Anholt <eric@anholt.net>

We have it, so use it. This required moving the function to avoid
a forward declaration.
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NEric Anholt <eric@anholt.net>

The fence_list should be lru ordered for otherwise we might try
to steal a fence reg from an active object even though there are
fences from inactive objects available. lru ordering was obeyed
for gpu access everywhere save when moving dirty objects from
flushing_list to active_list.

Fixing this cause the code to indent way to much, so I've extracted
the flushing_list processing logic into its on function.
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NEric Anholt <eric@anholt.net>

The spaghetti logic in there tripped up my brain's code parser for a
few secs. Prevent this from happening again by extracting the fence
stealing code into a seperate functions. IMHO this slightly clears up
the code flow.

v2: Beautified according to ickle's comments.
v3: ickle forgot to flush his comment queue ... Now there's also a
we-are-paranoid BUG_ON in there.
v4: I've forgotten to switch on my brain when doing v3. Now the BUG_ON
actually checks something useful.
v5: Clean up a stale comment as noted by Eric Anholt.
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NEric Anholt <eric@anholt.net>

All other accesses take this spinlock, so do this here, too.
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NEric Anholt <eric@anholt.net>

This has a few functional changes against the old code:

* a few more unnecessary loads and stores to the drm_i915_fence_reg
  objects. Also an unnecessary store to the hw fence register.

* zaps any userspace mappings before doing other flushes. Only changes
  anything when userspace does racy stuff against itself.

* also flush GTT domain. This is a noop, but still try to keep the
  bookkeeping correct.
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NEric Anholt <eric@anholt.net>

See http://bugzilla.kernel.org/show_bug.cgi?id=15021

Make sure that the appropriate AGP module is loaded and probed before
trying to set up the DRM.  The DRM already depends on the AGP core,
but in this case we know the specific AGP driver we need too, and can
help users avoid the trap of loading the AGP driver after the DRM
driver.
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

I think this is pretty much correct.  Not really tested.
Signed-off-by: NEric Anholt <eric@anholt.net>

Disables CXSR until it's done, and sets the mobile bit on mobile.
Signed-off-by: NEric Anholt <eric@anholt.net>

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

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