Add a GETPARAM request for checking if page flipping is supported.
Useful for the 2D driver to enable the flipping path.
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

We don't actually know which frame number the flip will complete on, so
userspace needs a specific flip notification to tell it when the last flip
completed.
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>
Acked-by: NKristian Høgsberg <krh@bitplanet.net>

Acked-by: NJakob Bornecrantz <jakob@vmware.com>
Acked-by: NThomas Hellström <thomas@shipmail.org>
Review-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NJesse "Orange Smoothie" Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NKristian Høgsberg <krh@bitplanet.net>
Signed-off-by: NEric Anholt <eric@anholt.net>

PineView only has 2 ports for LVDS and CRT. Don't enable other
ports for it.

Cc: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

We not only check the device type, but also check the addin_offset. If the
addin_offset is zero, it won't be initialized.
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Reviewed-by: NAdam Jackson <ajax@redhat.com>
Signed-off-by: NEric Anholt <eric@anholt.net>
[anholt: hand-applied due to conflicts]

Use the child device array to decide whether the given DP output should be
initialized. If the given DP port can't be found in child device array,
it is not present and won't be initialized.
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Use the child device array to decide whether the given HDMI output should be
initialized. If the given HDMI port can't be found in child device array,
it is not present and won't be initialized.
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

On some laptops there is no HDMI/DP. But the xrandr still reports
several disconnected HDMI/display ports. In such case the user will be
confused.
 >DVI1 disconnected (normal left inverted right x axis y axis)
 >DP1 disconnected (normal left inverted right x axis y axis)
 >DVI2 disconnected (normal left inverted right x axis y axis)
 >DP2 disconnected (normal left inverted right x axis y axis)
 >DP3 disconnected (normal left inverted right x axis y axis)

This patch set is to use the child device parsed in VBT to decide whether
the HDMI/DP/LVDS/TV should be initialized.

Parse the child device from VBT.

The device class type is also added for LFP, TV, HDMI, DP output.

https://bugs.freedesktop.org/show_bug.cgi?id=22785Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Reviewed-by: NAdam Jackson <ajax@redhat.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

Otherwise the chip may scribble over free memory.
Signed-off-by: NKristian Høgsberg <krh@bitplanet.net>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

This also extends the mutex to cover fbc disabling, which is safe.
Signed-off-by: NKristian Høgsberg <krh@bitplanet.net>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

Signed-off-by: NKristian Høgsberg <krh@bitplanet.net>
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

if no VBT is present, crt_ddc_bus will be left at 0, and cause us
to use that for the GPIO register offset. That's never a valid register
offset, so let the "undefined" value be 0 instead of -1.
Signed-off-by: NShaohua Li <shaohua.li@intel.com>
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>
[anholt: clarified the commit message a bit]

In commit d2d9f232, the guard for a valid video mode was removed. This
caused the regression:

  kernel crash during kms graphic boot on Intel GM4500 platform
  https://bugzilla.redhat.com/show_bug.cgi?id=540218

This patches changes the logic slightly not to rely on a coupled
variable, but to just check whether the video_modes is valid before
dereferencing.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Zhenyu Wang <zhenyu.z.wang@intel.com>
[ickle: Actually reference the correct bug report]
Acked-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

When switching to interruptible sleeps in the overlay code, I've
forgotten to recover from interruptions at one site.  This
resulted in the overlay still running when it should have been
switched off. This in turn caused a hang on resume because it
tried to disable the (not-running) overlay in preparation for the
resume modeset.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=24980
Tested-by: maximlevitsky@gmail.com
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NEric Anholt <eric@anholt.net>

I've suspected some bug there wrt to suspend, but that was not
the case. Clean up the code anyway.
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NEric Anholt <eric@anholt.net>

HW guys have an evaluation about the impact about EOS, and say the impact
is quite small, so they have removed EOS detection support. This patch
removes EOS feature.

revert commit 04302965
directly reverting it gives a hunk error, so please use this one.
Signed-off-by: NShaohua Li <shaohua.li@intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>
[anholt: fixed up commit message for update that the feature's really gone]

20ms delay is quite big and the routine isn't called in atomic context.
better use msleep to let other tasks run. This can reduce cpu time used
by Xorg, so potentially boost boot.
Signed-off-by: NShaohua Li <shaohua.li@intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

In failure path, make sure encoder is cleaned up, otherwise there
is a kernel oops.
Signed-off-by: NShaohua Li <shaohua.li@intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

In disable sequence, all output ports on PCH have to be disabled
before PCH transcoder, but LVDS port was left always enabled. This
one fixes that by disable LVDS port properly during pipe disable
process, and resolved stability issue seen on Ironlake. Also move
panel fitting disable time just after pipe disable to align with
the spec.
Signed-off-by: NZhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: NEric Anholt <eric@anholt.net>

The DPLL calculation logic for 9xx platform is changed in:
commit 652c393a
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Mon Aug 17 13:31:43 2009 -0700

    drm/i915: add dynamic clock frequency control

Maybe we will get the different M/N/P combination with that by using the
previous dpll calculation logic.

So restore the DPLL calculation logic for 9xx platform.
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Reviewed-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

Enumerate the LVDS panel timing info entry list in VBT to check whether
the LVDS downclock is found. If found, the downclock is also used to switch
dynamically between low and high frequency for LVDS.
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Acked-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

If more than one mode with the same resolution defined in EDID has different
refresh rate, it is thought that the downclock is found for LVDS.
We will program the different FPx0/1 register so that we can select dynamically
between the low and high frequency.

On the g4x platform we will use the CxSR feature to switch the different
refresh rate if the LVDS downclock feature is supported.
Signed-off-by: NZhao Yakui <yakui.zhao@intel.com>
Reviewed-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NEric Anholt <eric@anholt.net>

Execbufs involve quite a bit of payload, to the extent that cache misses
show up in the profiles here, and a suspicion that some of those cachelines
may get evicted and then reloaded in the subsequent copy.

This is still abstracted like drm_calloc_large since we want to check for
size overflow, and because we want to choose between kmalloc and vmalloc
on the fly.  cairo's interface for malloc-with-calloc's-args was used as
the model.
Signed-off-by: NEric Anholt <eric@anholt.net>

This adds a page flipping ioctl to the KMS API.  The ioctl takes an fb ID
and a ctrc ID and flips the crtc to the given fb at the next vblank.
The ioctl returns immediately but the flip doesn't happen until after
any rendering that's currently queued up against the new framebuffer
is done.  After submitting a page flip, any execbuffer involving the
old front buffer will block until the flip is completed.

Optionally, a vblank event can be generated when the swap eventually
happens.
Signed-off-by: NKristian Høgsberg <krh@bitplanet.net>
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NDave Airlie <airlied@redhat.com>

In drm_version, actually check the results from function calls so that
we're not potentially passing garbage back to userspace.
Signed-off-by: NAndres Salomon <dilinger@collabora.co.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Don't inline it; the compiler can figure it out.  Comments added that are
based upon my interpretation of the code.  Hopefully they're correct. :)
Signed-off-by: NAndres Salomon <dilinger@collabora.co.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

There are a few more macros in drmP.h that are unused; DRM_GET_PRIV_SAREA,
DRM_ARRAY_SIZE, and DRM_WAITCOUNT can go away completely.

Unfortunately, DRM_COPY is still used in one place, but we can at least
move it to where it's used.  It's an awful looking macro..

[akpm: fix overeagerness]
Signed-off-by: NAndres Salomon <dilinger@collabora.co.uk>
Cc: Dave Airlie <airlied@linux.ie>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

i915_gem_proc.c appears to have been the last user of the DRM_PROC_*
macros, and it has gone away.  The macros should die as well.
Signed-off-by: NAndres Salomon <dilinger@collabora.co.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

If we queue a vblank event but miss it, we should return the actual
sequence number we queued to userspace, so its event handling function
will know which event to look for.
Acked-by: NKristian Høgsberg <krh@bitplanet.net>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

This patch adds a new flag to the drmWaitVblank ioctl, which asks the drm
to return immediately and notify userspace when the specified vblank sequence
happens by sending an event back on the drm fd.

The event mechanism works with the other flags supported by the ioctls,
specifically, the vblank sequence can be specified relatively or absolutely,
and works for primary and seconday crtc.

The signal field of the vblank request is used to provide user data,
which will be sent back to user space in the vblank event.
Signed-off-by: NKristian Høgsberg <krh@redhat.com>
Reviewed-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

If we queue a vblank event but miss it, we should return the actual
sequence number we queued to userspace, so its event handling function
will know which event to look for.
Acked-by: NKristian Høgsberg <krh@bitplanet.net>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NDave Airlie <airlied@redhat.com>

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c: Add an interface to lock/unlock an I2C bus segment
  i2c-piix4: Modify code name SB900 to Hudson-2

* 'for-linus' of git://neil.brown.name/md:
  md/raid5: make sure curr_sync_completes is uptodate when reshape starts
  md: don't clear endpoint for resync when resync is interrupted.

KSM needs a cond_resched() for CONFIG_PREEMPT_NONE, in its unbounded
search of the unstable tree.  The stable tree cases already have one,
and originally there was one down inside get_user_pages();
but I missed it when I converted to follow_page() instead.
Signed-off-by: NHugh Dickins <hugh.dickins@tiscali.co.uk>
Acked-by: NIzik Eidus <ieidus@redhat.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: fix missing cleanup of gc cache on error cases
  nilfs2: fix kernel oops in error case of nilfs_ioctl_move_blocks

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (34 commits)
  net/fsl_pq_mdio: add module license GPL
  can: fix WARN_ON dump in net/core/rtnetlink.c:rtmsg_ifinfo()
  can: should not use __dev_get_by_index() without locks
  hisax: remove bad udelay call to fix build error on ARM
  ipip: Fix handling of DF packets when pmtudisc is OFF
  qlge: Set PCIe reset type for EEH to fundamental.
  qlge: Fix early exit from mbox cmd complete wait.
  ixgbe: fix traffic hangs on Tx with ioatdma loaded
  ixgbe: Fix checking TFCS register for TXOFF status when DCB is enabled
  ixgbe: Fix gso_max_size for 82599 when DCB is enabled
  macsonic: fix crash on PowerBook 520
  NET: cassini, fix lock imbalance
  ems_usb: Fix byte order issues on big endian machines
  be2net: Bug fix to send config commands to hardware after netdev_register
  be2net: fix to set proper flow control on resume
  netfilter: xt_connlimit: fix regression caused by zero family value
  rt2x00: Don't queue ieee80211 work after USB removal
  Revert "ipw2200: fix oops on missing firmware"
  decnet: netdevice refcount leak
  netfilter: nf_nat: fix NAT issue in 2.6.30.4+
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc: Move of_set_property_mutex acquisition outside of devtree_lock grab.
  sparc64: replace parentheses in pmul()
  sparc64: Add a comment about why we only use certain memory barriers these days.