Rodrigo Vivi [Wed, 6 Sep 2017 18:11:28 +0000 (11:11 -0700)]
Merge tag 'gvt-fixes-2017-09-06' of https://github.com/01org/gvt-linux into drm-intel-next-fixes
gvt-fixes-2017-09-06
- regression fix for gvt init failure from Jianjun
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170906035924.2225krr6snv2duvq@zhen-hp.sh.intel.com
Chris Wilson [Wed, 6 Sep 2017 11:14:05 +0000 (12:14 +0100)]
drm/i915: Re-enable GTT following a device reset
Ville Syrjälä spotted that PGETBL_CTL was losing its enable bit upon a
reset. That was causing the display to show garbage on his 945gm. On my
i915gm the effect was far more severe; re-enabling the display following
the reset without PGETBL_CTL being enabled lead to an immediate hard
hang.
We do have a routine to re-enable PGETBL_CTL which is applicable to
gen2-4, although on gen4 it is documented that a graphics reset doesn't
alter the register (no such wording is given for gen3) and should be safe
to call to punch back in the enable bit. However, that leaves the question
of whether we need to completely re-initialise the register and the
rest of the GSM. For g33/pnv/gen4+, where we do have a configurable
page table, its contents do seem to be kept, and so we should be able to
recover without having to reinitialise the GTT from scratch (as prior to
g33, that register is configured by the BIOS and we leave alone except
for the enable bit).
This appears to have been broken by commit
5fbd0418eef2 ("drm/i915:
Re-enable GGTT earlier during resume on pre-gen6 platforms"), which
moved the intel_enable_gtt() from i915_gem_init_hw() (also used by
reset) to add it earlier during hw init and resume, missing the reset
path.
v2: Find the culprit, rearrange ggtt_enable to be before gem_init_hw to
match init/resume
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Fixes:
5fbd0418eef2 ("drm/i915: Re-enable GGTT earlier during resume on pre-gen6 platforms")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101852
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170906111405.27110-1-chris@chris-wilson.co.uk
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit
0db8c961209153498fe7e279b8f0d3deb81808f0)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Ville Syrjälä [Fri, 1 Sep 2017 16:54:34 +0000 (19:54 +0300)]
drm/i915: Annotate user relocs with __user
Add the missing __user to the urelocs cast to fix the following sparse
warning:
i915_gem_execbuffer.c:1541:47: warning: cast removes address space of expression
i915_gem_execbuffer.c:1541:62: warning: incorrect type in argument 2 (different address spaces)
i915_gem_execbuffer.c:1541:62: expected void const [noderef] <asn:1>*from
i915_gem_execbuffer.c:1541:62: got char *
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Fixes:
2889caa92321 ("drm/i915: Eliminate lots of iterations over the execobjects array")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901165434.24636-1-ville.syrjala@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> #irc
(cherry picked from commit
908a610557f4d8b46a0f82c01e31b30f5c998580)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Chris Wilson [Fri, 1 Sep 2017 14:57:28 +0000 (15:57 +0100)]
drm/i915: Silence sparse by using gfp_t
Sparse enforces that GFP flags are only manipulated inside gfp_t locals.
Fixes:
4d470f7359c4 ("drm/i915: Avoid undefined behaviour of "u32 >> 32"")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901145729.21363-1-chris@chris-wilson.co.uk
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit
0d95c883bab5c5507fac3c34bc506f735971a2ee)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Ville Syrjälä [Fri, 1 Sep 2017 17:12:51 +0000 (20:12 +0300)]
drm/i915: Add __rcu to radix tree slot pointer
radix_tree_for_each_slot() wants an __rcu annotated pointer for the
slot. So let's add the annotation.
Fixes the following sparse warnings:
i915_gem.c:2217:9: warning: incorrect type in assignment (different address spaces)
i915_gem.c:2217:9: expected void **slot
i915_gem.c:2217:9: got void [noderef] <asn:4>**
i915_gem.c:2217:9: warning: incorrect type in assignment (different address spaces)
i915_gem.c:2217:9: expected void **slot
i915_gem.c:2217:9: got void [noderef] <asn:4>**
i915_gem.c:2217:9: warning: incorrect type in argument 1 (different address spaces)
i915_gem.c:2217:9: expected void [noderef] <asn:4>**slot
i915_gem.c:2217:9: got void **slot
i915_gem.c:2217:9: warning: incorrect type in assignment (different address spaces)
i915_gem.c:2217:9: expected void **slot
i915_gem.c:2217:9: got void [noderef] <asn:4>**
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Fixes:
96d776345277 ("drm/i915: Use a radixtree for random access to the object's backing storage")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901171252.31025-1-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit
c23aa71bcfe8a9d597ae5fe4c1527fac20254d0a)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Zhi Wang [Thu, 31 Aug 2017 19:36:14 +0000 (03:36 +0800)]
drm/i915: Fix the missing PPAT cache attributes on CNL
Add back the GEN8_PPAT_WB cache attributes in cnl_setup_private_ppat(),
which are missed on CNL.
Fixes:
4e34935fcf69 ("drm/i915/cnl: Setup PAT Index.")
Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1504208177-27784-1-git-send-email-zhi.a.wang@intel.com
(cherry picked from commit
6e31cdcfe17d8a25530924183d4a843602baebb1)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Jian Jun Chen [Wed, 23 Aug 2017 05:23:10 +0000 (13:23 +0800)]
drm/i915/gvt: Remove one duplicated MMIO
Remove one duplicated MMIO GEN6_PCODE_MAILBOX. Duplicated MMIO will
cause host GVT-g initialization failure.
Fixes:
9c3a16c887f0 ("drm/i915/hsw+: Add support for multiple power well regs")
Signed-off-by: Jian Jun Chen <jian.jun.chen@intel.com>
Acked-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Ville Syrjälä [Fri, 1 Sep 2017 14:31:23 +0000 (17:31 +0300)]
drm/i915: Fix enum pipe vs. enum transcoder for the PCH transcoder
Use enum pipe for PCH transcoders also in the FIFO underrun code.
Fixes the following new sparse warnings:
intel_fifo_underrun.c:340:49: warning: mixing different enum types
intel_fifo_underrun.c:340:49: int enum pipe versus
intel_fifo_underrun.c:340:49: int enum transcoder
intel_fifo_underrun.c:344:49: warning: mixing different enum types
intel_fifo_underrun.c:344:49: int enum pipe versus
intel_fifo_underrun.c:344:49: int enum transcoder
intel_fifo_underrun.c:397:57: warning: mixing different enum types
intel_fifo_underrun.c:397:57: int enum pipe versus
intel_fifo_underrun.c:397:57: int enum transcoder
intel_fifo_underrun.c:398:17: warning: mixing different enum types
intel_fifo_underrun.c:398:17: int enum pipe versus
intel_fifo_underrun.c:398:17: int enum transcoder
Cc: Matthias Kaehlcke <mka@chromium.org>
Fixes:
a21960339c8c ("drm/i915: Consistently use enum pipe for PCH transcoders")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901143123.7590-3-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit
41c32e5da3ff3922490341a988b2a3ae46d0b6a8)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Ville Syrjälä [Fri, 1 Sep 2017 14:31:22 +0000 (17:31 +0300)]
drm/i915: Make i2c lock ops static
Make gmbus_lock_ops and proxy_lock_ops static to appease sparse
intel_i2c.c:652:34: warning: symbol 'gmbus_lock_ops' was not declared. Should it be static?
intel_sdvo.c:2981:34: warning: symbol 'proxy_lock_ops' was not declared. Should it be static?
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Fixes:
a85066840d29 ("drm/i915: Rework sdvo proxy i2c locking")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901143123.7590-2-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit
0db1aa424e3ee91fcb9d583edb30a933c64c5b88)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Ville Syrjälä [Fri, 1 Sep 2017 14:31:21 +0000 (17:31 +0300)]
drm/i915: Make i9xx_load_ycbcr_conversion_matrix() static
Make i9xx_load_ycbcr_conversion_matrix() static to appease sparse:
intel_color.c:110:6: warning: symbol 'i9xx_load_ycbcr_conversion_matrix' was not declared. Should it be static?
Cc: Shashank Sharma <shashank.sharma@intel.com>
Fixes:
25edf91501b8 ("drm/i915: prepare csc unit for YCBCR420 output")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901143123.7590-1-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit
0abd9976960a5c46b5cc49f2f53281774a8a4a3e)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Manasi Navare [Tue, 15 Aug 2017 18:59:51 +0000 (11:59 -0700)]
drm/i915/edp: Increase T12 panel delay to 900 ms to fix DP AUX CH timeouts
This patch fixes the DP AUX CH timeouts observed during CI runs causing
CI Failures on a specific PCI device. This issue was fixed previously
by adding a quirk but looks like we need to increase this delay even more
in order to get rid all the DP AUX CH timeouts.
Fixes:
c99a259b4b5192ba ("drm/i915/edp: Add a T12 panel delay quirk to fix
DP AUX CH timeouts")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101144
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Cc: Clinton Taylor <clinton.a.taylor@intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Tomi Sarvela <tomi.p.sarvela@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502823591-25310-1-git-send-email-manasi.d.navare@intel.com
(cherry picked from commit
e8f345e08d391827f2cba5d172af990cc7afb062)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Chris Wilson [Tue, 22 Aug 2017 11:05:17 +0000 (12:05 +0100)]
drm/i915: Ignore duplicate VMA stored within the per-object handle LUT
By using drm_gem_flink/drm_gem_open on an object using the same fd, it
is possible for a client to create multiple handles pointing to the same
object (tied to the same contexts and VMA), as exemplified by
igt::gem_handle_to_libdrm_bo(). Since this duplication has been possible
since forever, we cannot assume that the handle:(fpriv, object) is
unique and so must handle the multiple users of a single VMA.
v2: Added commentary noise.
Testcase: igt/gem_close
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102355
Fixes:
d1b48c1e7184 ("drm/i915: Replace execbuf vma ht with an idr")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170822110517.22277-3-chris@chris-wilson.co.uk
Tested-by: Marta Lofstedt <marta.lofstedt@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
(cherry-picked from commit
3ffff01749928ea5ffdae2cecad561898c3b0f71)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Ville Syrjälä [Thu, 24 Aug 2017 19:10:50 +0000 (22:10 +0300)]
drm/i915: Skip fence alignemnt check for the CCS plane
The CCS won't have the same stride as the main surface anyway so trying
to guard against the fence stride not matching the CCS stride is
not sensible. Just skip the fence vs. fb alignment check for the aux
plane.
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Daniel Stone <daniels@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170824191100.10949-3-ville.syrjala@linux.intel.com
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Fixes:
2e2adb05736c ("drm/i915: Add render decompression support")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit
2ec4cf4057fcb98cb4cabdd57fa12357e438ae98)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Ville Syrjälä [Thu, 24 Aug 2017 19:10:49 +0000 (22:10 +0300)]
drm/i915: Treat fb->offsets[] as a raw byte offset instead of a linear offset
Userspace wants to treat fb->offsets[] as raw byte offsets into the gem
bo. Adjust the kernel code to match.
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Daniel Stone <daniels@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170824191100.10949-2-ville.syrjala@linux.intel.com
Acked-by: Ben Widawsky <ben@bwidawsk.net>
Fixes:
2e2adb05736c ("drm/i915: Add render decompression support")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit
303ba6955499ef757ca5ddcc816e370cc7581cb5)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Chris Wilson [Tue, 29 Aug 2017 19:25:46 +0000 (20:25 +0100)]
drm/i915: Always wake the device to flush the GTT
Since we hold the device wakeref when writing through the GTT (otherwise
the writes would fail), we presumed that before the device sleeps those
writes would naturally be flushed and that we wouldn't need our mmio
read trick. However, that presumption seems false and a sleepy bxt seems
to require us to always manually flush the GTT writes prior to direct
access.
Fixes:
e2a2aa36a509 ("drm/i915: Check we have an wake device before flushing GTT writes")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170829192546.1087-1-chris@chris-wilson.co.uk
(cherry picked from commit
b69a784f5e2308d6360a76eceae450e96751f3e4)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Chris Wilson [Mon, 28 Aug 2017 10:46:31 +0000 (11:46 +0100)]
drm/i915: Recreate vmapping even when the object is pinned
Sometimes we know we are the only user of the bo, but since we take a
protective pin_pages early on, an attempt to change the vmap on the
object is denied because it is busy. i915_gem_object_pin_map() cannot
tell from our single pin_count if the operation is safe. Instead we must
pass that information down from the caller in the manner of
I915_MAP_OVERRIDE.
This issue has existed from the introduction of the mapping, but was
never noticed as the only place where this conflict might happen is for
cached kernel buffers (such as allocated by i915_gem_batch_pool_get()).
Until recently there was only a single user (the cmdparser) so no
conflicts ever occurred. However, we now use it to allocate batches for
different operations (using MAP_WC on !llc for writes) in addition to the
existing shadow batch (using MAP_WB for reads).
We could either keep both mappings cached, or use a different write
mechanism if we detect a MAP_WB already exists (i.e. clflush
afterwards), but as we haven't seen this issue in the wild (it requires
hitting the GPU reloc path in addition to the cmdparser) for simplicity
just allow the mappings to be recreated.
v2: Include the i915_MAP_OVERRIDE bit in the enum so the compiler knows
about all the valid values.
Fixes:
7dd4f6729f92 ("drm/i915: Async GPU relocation processing")
Testcase: igt/gem_lut_handle # byt, completely by accident
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170828104631.8606-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
(cherry picked from commit
a575c6761757232ea2c7dc9f370640754b90cc69)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Chris Wilson [Fri, 25 Aug 2017 15:02:15 +0000 (16:02 +0100)]
drm/i915: Quietly cancel FBC activation if CRTC is turned off before worker
Since we use a worker to enable FBC on the CRTC, it is possible for the
CRTC to be switched off before we run. In this case, the CRTC will not
allow us to wait upon a vblank, so remove the DRM_ERROR as this is very
much expected.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=102410
Fixes:
ca18d51d77eb ("drm/i915/fbc: wait for a vblank instead of 50ms when enabling")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170825150215.19236-1-chris@chris-wilson.co.uk
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit
908b6e6e8ab4c1e0c3783be4c4b437ac6fa374ea)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Dave Airlie [Tue, 29 Aug 2017 00:38:14 +0000 (10:38 +1000)]
Merge branch 'drm-vmwgfx-next' of git://people.freedesktop.org/~syeh/repos_linux into drm-next
vmwgfx add fence fd support.
* 'drm-vmwgfx-next' of git://people.freedesktop.org/~syeh/repos_linux:
drm/vmwgfx: Bump the version for fence FD support
drm/vmwgfx: Add export fence to file descriptor support
drm/vmwgfx: Add support for imported Fence File Descriptor
drm/vmwgfx: Prepare to support fence fd
drm/vmwgfx: Fix incorrect command header offset at restart
drm/vmwgfx: Support the NOP_ERROR command
drm/vmwgfx: Restart command buffers after errors
drm/vmwgfx: Move irq bottom half processing to threads
drm/vmwgfx: Don't use drm_irq_[un]install
Dave Airlie [Tue, 29 Aug 2017 00:37:36 +0000 (10:37 +1000)]
Merge tag 'exynos-drm-next-for-v4.14' of git://git./linux/kernel/git/daeinki/drm-exynos into drm-next
Summary:
- Provide NV12MT pixel format support of Mixer driver in generic way.
- Refactor Exynos KMS drivers
. Refactoring to panel detection way
. Refactoring to setting up possible_crtcs
. Refactoring to video and command mode support
- Some cleanups
* tag 'exynos-drm-next-for-v4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: simplify set_pixfmt() in DECON and FIMD drivers
drm/exynos: consistent use of cpp
drm/exynos: mixer: remove src offset from mixer_graph_buffer()
drm/exynos: mixer: simplify mixer_graph_buffer()
drm/exynos: mixer: simplify vp_video_buffer()
drm/exynos: mixer: enable NV12MT support for the video plane
drm/exynos: mixer: fix chroma comment in vp_video_buffer()
arm64: dts: exynos: remove i80-if-timings nodes
dt-bindings: exynos5433-decon: remove i80-if-timings property
drm/exynos/decon5433: use mode info stored in CRTC to detect i80 mode
drm/exynos: add mode_valid callback to exynos_drm
drm/exynos/decon5433: refactor irq requesting code
drm/exynos/mic: use mode info stored in CRTC to detect i80 mode
drm/exynos/dsi: propagate info about command mode from panel
drm/exynos/dsi: refactor panel detection logic
drm/exynos: use helper to set possible crtcs
drm/exynos/decon5433: use readl_poll_timeout helpers
Dave Airlie [Tue, 29 Aug 2017 00:36:06 +0000 (10:36 +1000)]
Merge tag 'drm-misc-next-fixes-2017-08-28' of git://anongit.freedesktop.org/git/drm-misc into drm-next
UAPI Changes:
- Rename u32 to __u32 in struct drm_format_modifier_blob (Lionel)
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
* tag 'drm-misc-next-fixes-2017-08-28' of git://anongit.freedesktop.org/git/drm-misc:
drm: rename u32 in __u32 in uapi
Jason Ekstrand [Mon, 28 Aug 2017 21:10:28 +0000 (14:10 -0700)]
drm/syncobj: Add a signal ioctl (v3)
This IOCTL provides a mechanism for userspace to trigger a sync object
directly. There are other ways that userspace can trigger a syncobj
such as submitting a dummy batch somewhere or hanging on to a triggered
sync_file and doing an import. This just provides an easy way to
manually trigger the sync object without weird hacks.
The motivation for this IOCTL is Vulkan fences. Vulkan lets you create
a fence already in the signaled state so that you can wait on it
immediatly without stalling. We could also handle this with a new
create flag to ask the driver to create a syncobj that is already
signaled but the IOCTL seemed a bit cleaner and more generic.
v2:
- Take an array of sync objects (Dave Airlie)
v3:
- Throw -EINVAL if pad != 0
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Jason Ekstrand [Mon, 28 Aug 2017 21:10:27 +0000 (14:10 -0700)]
drm/syncobj: Add a reset ioctl (v3)
This just resets the dma_fence to NULL so it looks like it's never been
signaled. This will be useful once we add the new wait API for allowing
wait on "submit and signal" behavior.
v2:
- Take an array of sync objects (Dave Airlie)
v3:
- Throw -EINVAL if pad != 0
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Dave Airlie <airlied@redhat.com>
Jason Ekstrand [Fri, 25 Aug 2017 17:52:26 +0000 (10:52 -0700)]
drm/syncobj: Add a syncobj_array_find helper
The wait ioctl has a bunch of code to read an syncobj handle array from
userspace and turn it into an array of syncobj pointers. We're about to
add two new IOCTLs which will need to work with arrays of syncobj
handles so let's make some helpers.
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Jason Ekstrand [Fri, 25 Aug 2017 17:52:24 +0000 (10:52 -0700)]
drm/syncobj: Allow wait for submit and signal behavior (v5)
Vulkan VkFence semantics require that the application be able to perform
a CPU wait on work which may not yet have been submitted. This is
perfectly safe because the CPU wait has a timeout which will get
triggered eventually if no work is ever submitted. This behavior is
advantageous for multi-threaded workloads because, so long as all of the
threads agree on what fences to use up-front, you don't have the extra
cross-thread synchronization cost of thread A telling thread B that it
has submitted its dependent work and thread B is now free to wait.
Within a single process, this can be implemented in the userspace driver
by doing exactly the same kind of tracking the app would have to do
using posix condition variables or similar. However, in order for this
to work cross-process (as is required by VK_KHR_external_fence), we need
to handle this in the kernel.
This commit adds a WAIT_FOR_SUBMIT flag to DRM_IOCTL_SYNCOBJ_WAIT which
instructs the IOCTL to wait for the syncobj to have a non-null fence and
then wait on the fence. Combined with DRM_IOCTL_SYNCOBJ_RESET, you can
easily get the Vulkan behavior.
v2:
- Fix a bug in the invalid syncobj error path
- Unify the wait-all and wait-any cases
v3:
- Unify the timeout == 0 case a bit with the timeout > 0 case
- Use wait_event_interruptible_timeout
v4:
- Use proxy fence
v5:
- Revert to a combination of v2 and v3
- Don't use proxy fences
- Don't use wait_event_interruptible_timeout because it just adds an
extra layer of callbacks
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Jason Ekstrand [Fri, 25 Aug 2017 17:52:25 +0000 (10:52 -0700)]
drm/syncobj: Add a CREATE_SIGNALED flag
This requests that the driver create the sync object such that it
already has a signaled dma_fence attached. Because we don't need
anything in particular (just something signaled), we use a dummy null
fence. This is useful for Vulkan which has a similar flag that can be
passed to vkCreateFence.
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Jason Ekstrand [Mon, 28 Aug 2017 14:39:25 +0000 (07:39 -0700)]
drm/syncobj: Add a callback mechanism for replace_fence (v3)
It is useful in certain circumstances to know when the fence is replaced
in a syncobj. Specifically, it may be useful to know when the fence
goes from NULL to something valid. This does make syncobj_replace_fence
a little more expensive because it has to take a lock but, in the common
case where there is no callback list, it spends a very short amount of
time inside the lock.
v2:
- Don't lock in drm_syncobj_fence_get. We only really need to lock
around fence_replace to make the callback work.
v3:
- Fix the cb_list comment to make kbuild happy
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Fri, 25 Aug 2017 17:52:22 +0000 (10:52 -0700)]
drm/syncobj: add sync obj wait interface. (v8)
This interface will allow sync object to be used to back
Vulkan fences. This API is pretty much the vulkan fence waiting
API, and I've ported the code from amdgpu.
v2: accept relative timeout, pass remaining time back
to userspace.
v3: return to absolute timeouts.
v4: absolute zero = poll,
rewrite any/all code to have same operation for arrays
return -EINVAL for 0 fences.
v4.1: fixup fences allocation check, use u64_to_user_ptr
v5: move to sec/nsec, and use timespec64 for calcs.
v6: use -ETIME and drop the out status flag. (-ETIME
is suggested by ickle, I can feel a shed painting)
v7: talked to Daniel/Arnd, use ktime and ns everywhere.
v8: be more careful in the timeout calculations
use uint32_t for counter variables so we don't overflow
graciously handle -ENOINT being returned from dma_fence_wait_timeout
Signed-off-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Jason Ekstrand [Fri, 25 Aug 2017 17:52:21 +0000 (10:52 -0700)]
i915: Use drm_syncobj_fence_get
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Jason Ekstrand [Fri, 25 Aug 2017 17:52:20 +0000 (10:52 -0700)]
drm/syncobj: Add a race-free drm_syncobj_fence_get helper (v2)
The atomic exchange operation in drm_syncobj_replace_fence is sufficient
for the case where it races with itself. However, if you have a race
between a replace_fence and dma_fence_get(syncobj->fence), you may end
up with the entire replace_fence happening between the point in time
where the one thread gets the syncobj->fence pointer and when it calls
dma_fence_get() on it. If this happens, then the reference may be
dropped before we get a chance to get a new one. The new helper uses
dma_fence_get_rcu_safe to get rid of the race.
This is also needed because it allows us to do a bit more than just get
a reference in drm_syncobj_fence_get should we wish to do so.
v2:
- RCU isn't that scary
- Call rcu_read_lock/unlock
- Don't rename fence to _fence
- Make the helper static inline
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Dave Airlie <airlied@redhat.com>
Jason Ekstrand [Fri, 25 Aug 2017 17:52:19 +0000 (10:52 -0700)]
drm/syncobj: Rename fence_get to find_fence
The function has far more in common with drm_syncobj_find than with
any in the get/put functions.
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Dave Airlie <airlied@redhat.com>
John Stultz [Tue, 22 Aug 2017 18:42:26 +0000 (11:42 -0700)]
drm: kirin: Add mode_valid logic to avoid mode clocks we can't generate
Currently the hikey dsi logic cannot generate accurate byte
clocks values for all pixel clock values. Thus if a mode clock
is selected that cannot match the calculated byte clock, the
device will boot with a blank screen.
This patch uses the new mode_valid callback (many thanks to
Jose Abreu for upstreaming it!) to ensure we don't select
modes we cannot generate.
Also, since the ade crtc code will adjust the mode in mode_set,
this patch also adds a mode_fixup callback which we use to make
sure we are validating the mode clock that will eventually be
used.
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Xinliang Liu <xinliang.liu@linaro.org>
Cc: Xinliang Liu <z.liuxinliang@hisilicon.com>
Cc: Rongrong Zou <zourongrong@gmail.com>
Cc: Xinwei Kong <kong.kongxinwei@hisilicon.com>
Cc: Chen Feng <puck.chen@hisilicon.com>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Xinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Sinclair Yeh [Wed, 5 Jul 2017 08:51:42 +0000 (01:51 -0700)]
drm/vmwgfx: Bump the version for fence FD support
Minor version bump to indicate support for fence FD
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Deepak Singh Rawat <drawat@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Sinclair Yeh [Wed, 5 Jul 2017 08:49:32 +0000 (01:49 -0700)]
drm/vmwgfx: Add export fence to file descriptor support
Added code to link a fence to a out_fence_fd file descriptor and
thread out_fence_fd down to vmw_execbuf_copy_fence_user() so it can be
copied into the IOCTL reply and be passed back up the the user.
v2:
Make sure to sync and clean up in case of failure
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Deepak Singh Rawat <drawat@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Sinclair Yeh [Wed, 5 Jul 2017 08:45:40 +0000 (01:45 -0700)]
drm/vmwgfx: Add support for imported Fence File Descriptor
This allows vmwgfx to wait on a fence created by another
device.
v2:
* Remove special handling for vmwgfx fence and just use dma_fence_wait()
* Use interruptible waits
* Added function documentation
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Deepak Singh Rawat <drawat@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Sinclair Yeh [Wed, 5 Jul 2017 08:37:55 +0000 (01:37 -0700)]
drm/vmwgfx: Prepare to support fence fd
Make the fields and flags available.
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Deepak Singh Rawat <drawat@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Thomas Hellstrom [Thu, 24 Aug 2017 06:06:31 +0000 (08:06 +0200)]
drm/vmwgfx: Fix incorrect command header offset at restart
Sometimes it appears like the device modifies the command header offset
member. So explicitly clear it when restarting after an error.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Thomas Hellstrom [Thu, 24 Aug 2017 06:06:30 +0000 (08:06 +0200)]
drm/vmwgfx: Support the NOP_ERROR command
Can be used by user-space applications to test and verify the kernel
command buffer error recovery functionality.
Malicious user-space apps could potentially use this command to slow down
graphics processing somewhat, but they could also accomplish the same thing
using a random malformed command so this should be considered safe.
At least as safe as it gets.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Thomas Hellstrom [Thu, 24 Aug 2017 06:06:29 +0000 (08:06 +0200)]
drm/vmwgfx: Restart command buffers after errors
Previously we skipped the command buffer and added an extra fence to
avoid hangs due to skipped fence commands.
Now we instead restart the command buffer after the failing command,
if there are any commands left.
In addition we print out some information about the failing command
and its location in the command buffer.
Testing Done: ran glxgears using mesa modified to send the NOP_ERROR
command before each 10th clear and verified that we detected the device
error properly and that there were no other device errors caused by
incorrectly ordered command buffers. Also ran the piglit "quick" test
suite which generates a couple of device errors and verified that
they were handled as intended.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Thomas Hellstrom [Thu, 24 Aug 2017 06:06:28 +0000 (08:06 +0200)]
drm/vmwgfx: Move irq bottom half processing to threads
This gets rid of the irq bottom half tasklets and instead performs the
work needed in process context. We also convert irq-disabling spinlocks to
ordinary spinlocks.
This should decrease system latency for other system components, like
sound for example but has the potential to increase latency for processes
that wait on the GPU.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Thomas Hellstrom [Thu, 24 Aug 2017 06:06:27 +0000 (08:06 +0200)]
drm/vmwgfx: Don't use drm_irq_[un]install
We're not allowed to change the upstream version of the drm_irq_install
function to be able to incorporate threaded irqs. So roll our own irq
install- and uninstall functions instead of relying on the drm core ones.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Lionel Landwerlin [Thu, 24 Aug 2017 15:08:14 +0000 (16:08 +0100)]
drm: rename u32 in __u32 in uapi
All other fields use __
Cc: Ben Widawsky <ben@bwidawsk.net>
Fixes:
db1689aa61b ("drm: Create a format/modifier blob")
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170824150814.5878-1-lionel.g.landwerlin@intel.com
Tobias Jakobi [Tue, 22 Aug 2017 14:19:44 +0000 (16:19 +0200)]
drm/exynos: simplify set_pixfmt() in DECON and FIMD drivers
DRM core already checks the validity of the pixelformat.
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Tobias Jakobi [Tue, 22 Aug 2017 14:19:43 +0000 (16:19 +0200)]
drm/exynos: consistent use of cpp
A recent commit (
272725c7db4da1fd3229d944fc76d2e98e3a144e) has removed
the use of 'bits_per_pixel' in DRM. However the corresponding Exynos
driver code still uses the ambiguous 'bpp', even though it is now
initialized from fb->cpp[0].
Consistenly use 'cpp' in FIMD, DECON7 and DECON5433 drivers.
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Tobias Jakobi [Tue, 22 Aug 2017 14:19:40 +0000 (16:19 +0200)]
drm/exynos: mixer: remove src offset from mixer_graph_buffer()
We always translate the dma address such that the offsets of
the source image are zero. Hence we can remove manipulation of
the MXR_GRAPHIC_SXY(win) register and just zero them once
in mixer_win_reset().
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Tobias Jakobi [Tue, 22 Aug 2017 14:19:39 +0000 (16:19 +0200)]
drm/exynos: mixer: simplify mixer_graph_buffer()
DRM core already checks in drm_atomic_plane_check() if the
pixelformat is valid. Hence we can collapse the default case
of the switch statement with the XRGB8888 case.
No functional change.
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Tobias Jakobi [Tue, 22 Aug 2017 14:19:38 +0000 (16:19 +0200)]
drm/exynos: mixer: simplify vp_video_buffer()
DRM core already checks in drm_atomic_plane_check() if the
pixelformat is valid. Hence we can drop the default case of
the switch statement and collapse most of the code.
Also rename the two booleans to reflect what true/false
actually means, and to avoid mixing CrCb/NV21 descriptions.
No functional change.
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Tobias Jakobi [Tue, 22 Aug 2017 14:19:37 +0000 (16:19 +0200)]
drm/exynos: mixer: enable NV12MT support for the video plane
The video processor supports a tiled version of the NV12 format,
known as NV12MT in V4L2 terms. The support was removed in commit
083500baefd5f4c215a5a93aef2492c1aa775828 due to not being a real
pixel format, but rather NV12 with a special memory layout.
With the introduction of FB modifiers, we can now properly support
this format again.
Tested with a hacked up modetest from libdrm's test suite on
an ODROID-X2 (Exynos4412).
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Tobias Jakobi [Tue, 22 Aug 2017 14:19:36 +0000 (16:19 +0200)]
drm/exynos: mixer: fix chroma comment in vp_video_buffer()
The current comment sounds like the division op is done to
compensate for some hardware erratum. But the chroma plane
having half the height of the luma plane is just the way
NV12/NV21 is defined, so clarify this behaviour.
Signed-off-by: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Andrzej Hajda [Thu, 24 Aug 2017 13:33:59 +0000 (15:33 +0200)]
arm64: dts: exynos: remove i80-if-timings nodes
Since i80/command mode is determined in runtime by propagating info
from panel this property can be removed.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Andrzej Hajda [Thu, 24 Aug 2017 13:33:58 +0000 (15:33 +0200)]
dt-bindings: exynos5433-decon: remove i80-if-timings property
Since i80/command mode is determined in runtime by propagating info
from panel this property can be removed.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Andrzej Hajda [Thu, 24 Aug 2017 13:33:57 +0000 (15:33 +0200)]
drm/exynos/decon5433: use mode info stored in CRTC to detect i80 mode
Since panel's mode of work is propagated properly from panel to DECON,
there is no need to use redundant private device tree property.
The only issue with such approach is that check for required interrupts
should be postponed until panel communicate its requirements, ie to
mode validation phase - mode_valid callback.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Andrzej Hajda [Thu, 24 Aug 2017 13:33:56 +0000 (15:33 +0200)]
drm/exynos: add mode_valid callback to exynos_drm
crtc::mode_valid callback is required to implement proper pipeline
validation for command/video modes. Since Exynos uses private
framework such callback should be added to it.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Andrzej Hajda [Thu, 24 Aug 2017 13:33:55 +0000 (15:33 +0200)]
drm/exynos/decon5433: refactor irq requesting code
To allow runtime validation of mode of work irq request
code should be split into two separate phases:
- irq reqesting,
- irq checking.
Following patches will move 2nd phase to mode validation phase.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Andrzej Hajda [Thu, 24 Aug 2017 13:33:54 +0000 (15:33 +0200)]
drm/exynos/mic: use mode info stored in CRTC to detect i80 mode
MIC driver should use info from CRTC to check mode of work instead of
illegally peeking into nodes of other devices.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Andrzej Hajda [Thu, 24 Aug 2017 13:33:53 +0000 (15:33 +0200)]
drm/exynos/dsi: propagate info about command mode from panel
mipi_dsi framework provides information about panel's mode of work.
This info should be propagated upstream to configure all elements of
the pipeline. As CRTC is the common denominator of the pipeline we can
put such info into its structures.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Andrzej Hajda [Thu, 24 Aug 2017 13:33:52 +0000 (15:33 +0200)]
drm/exynos/dsi: refactor panel detection logic
Description of drm_helper_hpd_irq_event clearly states that drivers
supporting hotplug events per connector should use different helper -
drm_kms_helper_hotplug_event. To achieve it following changes have
been performed:
- moved down all DSI ops - they require exynos_dsi_disable function
to be defined earlier,
- simplified exynos_dsi_detect - there is no real detection, it just
returns if panel is attached,
- DSI attach/detach callbacks attaches/detaches DRM panel and sets
connector status and other context fields accordingly, all this is
performed under mutex, as these callbacks are asynchronous.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Andrzej Hajda [Thu, 24 Aug 2017 13:33:51 +0000 (15:33 +0200)]
drm/exynos: use helper to set possible crtcs
All encoders share the same code to set encoders possible_crtcs field.
The patch creates helper to abstract out this code.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Andrzej Hajda [Thu, 24 Aug 2017 13:33:50 +0000 (15:33 +0200)]
drm/exynos/decon5433: use readl_poll_timeout helpers
Linux core provide helpers for polling with timeout, lets use them.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Dave Airlie [Thu, 24 Aug 2017 23:30:54 +0000 (09:30 +1000)]
Merge tag 'sunxi-drm-for-4.14-2' of https://git./linux/kernel/git/mripard/linux into drm-next
sun4i DRM changes for 4.14, take 2
A single patch switching to a new OF helper.
* tag 'sunxi-drm-for-4.14-2' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
drm/sun4i: use of_graph_get_remote_endpoint()
Dave Airlie [Thu, 24 Aug 2017 23:30:15 +0000 (09:30 +1000)]
Merge tag 'omapdrm-4.14-fixes' of git://git./linux/kernel/git/tomba/linux into drm-next
omapdrm fixes for 4.14
* fix compilation when compiling omapfb driver
* WA for OMAP3 endless sync lost issue
* WA for OMAP5 DSI PLL issue
* fix analog TV out modecheck
* tag 'omapdrm-4.14-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
ARM: OMAP2+: fix missing variable declaration
drm/omap: work-around for omap3 display enable
drm/omap: fix i886 work-around
drm/omap: fix analog tv-out modecheck
Dave Airlie [Thu, 24 Aug 2017 23:29:45 +0000 (09:29 +1000)]
Merge tag 'drm-msm-next-2017-08-22' of git://people.freedesktop.org/~robclark/linux into drm-next
Updates for 4.14.. I have some further patches from Jordan to add
multiple priority levels and pre-emption, but those will probably be
for 4.15 to give me time for the mesa parts.
* tag 'drm-msm-next-2017-08-22' of git://people.freedesktop.org/~robclark/linux:
drm/msm/mdp5: mark runtime_pm functions as __maybe_unused
drm/msm: remove unused variable
drm/msm/mdp5: make helper function static
drm/msm: make msm_framebuffer_init() static
drm/msm: add helper to allocate stolen fb
drm/msm: don't track fbdev's gem object separately
drm/msm: add modeset module param
drm/msm/mdp5: add tracking for clk enable-count
drm/msm: remove unused define
drm/msm: Add a helper function for in-kernel buffer allocations
drm/msm: Attach the GPU MMU when it is created
drm/msm: Add A5XX hardware fault detection
drm/msm: Remove uneeded platform dev members
drm/msm/mdp5: Set up runtime PM for MDSS
drm/msm/mdp5: Write to SMP registers even if allocations don't change
drm/msm/mdp5: Don't use mode_set helper funcs for encoders and CRTCs
drm/msm/dsi: Implement RPM suspend/resume callbacks
drm/msm/dsi: Set up runtime PM for DSI
drm/msm/hdmi: Set up runtime PM for HDMI
drm/msm/mdp5: Use runtime PM get/put API instead of toggling clocks
Arnd Bergmann [Wed, 23 Aug 2017 13:28:19 +0000 (15:28 +0200)]
ARM: OMAP2+: fix missing variable declaration
The function that was added doesn't actually build:
arch/arm/mach-omap2/display.c: In function 'omapdss_init_fbdev':
arch/arm/mach-omap2/display.c:184:2: error: 'r' undeclared (first use in this function)
This adds a declaration for 'r' to fix it.
Fixes:
5ce783025c82 ("ARM: OMAP2+: Don't register omapdss device for omapdrm")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Kuninori Morimoto [Thu, 10 Aug 2017 04:36:43 +0000 (04:36 +0000)]
drm/sun4i: use of_graph_get_remote_endpoint()
Now, we can use of_graph_get_remote_endpoint(). Let's use it.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Tomi Valkeinen [Wed, 23 Aug 2017 09:19:02 +0000 (12:19 +0300)]
drm/omap: work-around for omap3 display enable
Seems that on omap3 enabling a crtc without any planes causes a sync
lost flood. This only happens on the first enable, and after that it
works. This looks like an HW issue and it's unclear why this is
happening or how to fix it.
This started happening after
897145d0c7010b4e07fa9bc674b1dfb9a2c6fff9
("drm/omapdrm: Move commit_modeset_enables() before commit_planes()")
which, as a work-around, changed omapdrm first to do the modeset enable,
and plane set only after that. This WA should be fine on all DSS
versions, but apparently OMAP3 DSS is an exception.
This patch reverts that work-around for OMAP3 DSS.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tomi Valkeinen [Tue, 13 Jun 2017 09:02:10 +0000 (12:02 +0300)]
drm/omap: fix i886 work-around
7d267f068a8b4944d52e8b0ae4c8fcc1c1c5c5ba ("drm/omap: work-around for
errata i886") changed how the PLL dividers and multipliers are
calculated. While the new way should work fine for all the PLLs, it
breaks omap5 PLLs. The issues seen are rather odd: seemed that the
output clock rate is half of what we asked. It is unclear what's causing
there issues.
As a work-around this patch adds a "errata_i886" flag, which is set only
for DRA7's PLLs, and the PLL setup is done according to that flag.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: H. Nikolaus Schaller <hns@goldelico.com>
Tomi Valkeinen [Tue, 13 Jun 2017 09:02:09 +0000 (12:02 +0300)]
drm/omap: fix analog tv-out modecheck
omapdrm rejects all venc (analog tv-out) videomodes, due to somewhat
strict checking of the values, making tv-out unusable.
We only support two videomodes, one for PAL and one for NTSC, so instead
of trying to check every field in the videomode struct, this patch makes
the driver check only the pixel clock and the size of the display.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Dave Airlie [Tue, 22 Aug 2017 19:32:26 +0000 (05:32 +1000)]
Merge branch 'linux-4.14' of git://github.com/skeggsb/linux into drm-next
Not a lot that's ready to be included this round for Nouveau. GP108
modesetting support, and misc other fixes.
* 'linux-4.14' of git://github.com/skeggsb/linux:
drm/nouveau/kms/nv50: perform null check on msto[i] rathern than msto
drm/nouveau/pci/msi: disable MSI on big-endian platforms by default
drm/nouveau: silence suspend/resume debugging messages
drm/nouveau/kms/nv04-nv4x: fix exposed format list
drm/nouveau/kms/nv10-nv40: add NV21 support to overlay
drm/nouveau/kms/nv04-nv40: improve overlay error detection, fix pitch setting
drm/nouveau/kms/nv04-nv40: prevent undisplayable framebuffers from creation
drm/nouveau/mpeg: print more debug info when rejecting dma objects
drm/nouveau/fb/gf100-: zero mmu debug buffers
drm/nouveau/bar/gf100: add config option to limit BAR2 to 16MiB
initial support (display-only) for GP108
drm/nouveau/falcon: use a more reasonable msgqueue timeout value
drm/nouveau/disp: Silence DCB warnings.
drm/nouveau/bios: Demote missing fp table message to NV_DEBUG.
drm/nouveau/pmu/gt215-: abstract detection of whether reset is needed
drm/nouveau/pmu/gt215: fix reset
drm/nouveau/mc/gf100: add pmu to reset mask
drm/nouveau/disp/gf119-: avoid creating non-existent heads
drm/nouveau/therm/gm200: Added
drm/nouveau/therm: fix spelling mistake on array thresolds
Arnd Bergmann [Thu, 3 Aug 2017 11:50:47 +0000 (13:50 +0200)]
drm/msm/mdp5: mark runtime_pm functions as __maybe_unused
When CONFIG_PM is disabled, we get harmless warnings about unused
functions:
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c:1025:12: error: 'mdp5_runtime_resume' defined but not used [-Werror=unused-function]
static int mdp5_runtime_resume(struct device *dev)
^~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c:1015:12: error: 'mdp5_runtime_suspend' defined but not used [-Werror=unused-function]
static int mdp5_runtime_suspend(struct device *dev)
^~~~~~~~~~~~~~~~~~~~
This marks both functions as __maybe_unused so the compiler
can drop them silently.
Fixes:
d68fe15b1878 ("drm/msm/mdp5: Use runtime PM get/put API instead of toggling clocks")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Arnd Bergmann [Thu, 3 Aug 2017 11:50:46 +0000 (13:50 +0200)]
drm/msm: remove unused variable
A cleanup left behind an unused variable that we have to remove
in order to avoid this harmless warning:
drivers/gpu/drm/msm/adreno/a5xx_gpu.c: In function 'a5xx_zap_shader_init':
drivers/gpu/drm/msm/adreno/a5xx_gpu.c:493:19: error: unused variable 'a5xx_gpu' [-Werror=unused-variable]
Fixes:
8d6f08272b6f ("drm/msm: Remove uneeded platform dev members")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Rob Clark [Tue, 11 Jul 2017 16:33:23 +0000 (12:33 -0400)]
drm/msm/mdp5: make helper function static
Not needed outside of mdp5_crtc.c.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Rob Clark [Tue, 11 Jul 2017 14:08:05 +0000 (10:08 -0400)]
drm/msm: make msm_framebuffer_init() static
Only needed in msm_fb.c so don't export it.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Rob Clark [Tue, 11 Jul 2017 14:40:13 +0000 (10:40 -0400)]
drm/msm: add helper to allocate stolen fb
We'll later want to re-use this for state-readback when bootloader
enables display, so that we can create an fb for the initial
plane->state->fb.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Rob Clark [Tue, 11 Jul 2017 14:13:29 +0000 (10:13 -0400)]
drm/msm: don't track fbdev's gem object separately
The drm_framebuffer is refcnt'd these days and will unref the underlying
bo as needed. So we can simplify a little.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Rob Clark [Thu, 6 Jul 2017 20:33:44 +0000 (16:33 -0400)]
drm/msm: add modeset module param
At least for debugging it is nice to have an easy way to force the
driver not to load.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Rob Clark [Mon, 3 Jul 2017 17:13:57 +0000 (13:13 -0400)]
drm/msm/mdp5: add tracking for clk enable-count
Accessing registers for an unclocked block is an insta-reboot on
snapdragon devices. So add a bit of logic to track the enable_count so
we can WARN_ON() unclocked register writes. This makes it much easier
to track down mistakes.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Rob Clark [Mon, 3 Jul 2017 14:43:27 +0000 (10:43 -0400)]
drm/msm: remove unused define
Signed-off-by: Rob Clark <robdclark@gmail.com>
Jordan Crouse [Thu, 27 Jul 2017 16:42:40 +0000 (10:42 -0600)]
drm/msm: Add a helper function for in-kernel buffer allocations
Nearly all of the buffer allocations for kernel allocate an buffer object,
virtual address and GPU iova at the same time. Make a helper function to
handle the details.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
[dropped msm_fbdev conversion to new helper, since it interferes with
display-handover work, where we want to separate allocation and mapping]
Signed-off-by: Rob Clark <robdclark@gmail.com>
Jordan Crouse [Thu, 27 Jul 2017 16:42:39 +0000 (10:42 -0600)]
drm/msm: Attach the GPU MMU when it is created
Currently the GPU MMU is attached in the adreno_gpu code but as
more and more of the GPU initialization moves to the generic
GPU path we have a need to map and use GPU memory earlier and
earlier. There isn't any reason to defer attaching the MMU
until later so attach it right after the address space is
created so it can be used immediately.
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Colin Ian King [Thu, 17 Aug 2017 22:03:23 +0000 (23:03 +0100)]
drm/nouveau/kms/nv50: perform null check on msto[i] rathern than msto
The null check on the array msto is incorrect since msto is never
null. The null check should be instead on msto[i] since this is
being dereferenced in the call to drm_mode_connector_attach_encoder.
Thanks to Emil Velikov for pointing out the mistake in my original
fix and for suggesting the correct fix.
Detected by CoverityScan, CID#
1375915 ("Array compared against 0")
Fixes:
f479c0ba4a17 ("drm/nouveau/kms/nv50: initial support for DP 1.2 multi-stream")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ilia Mirkin [Thu, 10 Aug 2017 16:13:40 +0000 (12:13 -0400)]
drm/nouveau/pci/msi: disable MSI on big-endian platforms by default
It appears that MSI does not work on either G5 PPC nor on a E5500-based
platform, where other hardware is reported to work fine with MSI.
Both tests were conducted with NV4x hardware, so perhaps other (or even
this) hardware can be made to work. It's still possible to force-enable
with config=NvMSI=1 on load.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: stable@vger.kernel.org
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Sun, 13 Aug 2017 22:40:55 +0000 (08:40 +1000)]
drm/nouveau: silence suspend/resume debugging messages
These are particularly annoying on Optimus systems where these paths can
be called regularly.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ilia Mirkin [Sun, 6 Aug 2017 02:25:05 +0000 (22:25 -0400)]
drm/nouveau/kms/nv04-nv4x: fix exposed format list
drm_crtc_init exposes the XRGB8888 and ARGB8888 formats. In actuality,
ARGB8888's 32-bit depth messes up some formulas that weren't meant for
it, and the alpha is fairly meaningless for the primary plane.
The modesetting logic appears to be fully prepared for RGB565 as well as
XRGB1555 however, as tested with modetest.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ilia Mirkin [Sun, 6 Aug 2017 02:25:04 +0000 (22:25 -0400)]
drm/nouveau/kms/nv10-nv40: add NV21 support to overlay
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ilia Mirkin [Sun, 6 Aug 2017 02:25:03 +0000 (22:25 -0400)]
drm/nouveau/kms/nv04-nv40: improve overlay error detection, fix pitch setting
We were previously setting the pitch based on a perfectly packed buffer.
This does not necessarily happen. Either modetest started generating
such buffers recently, or earlier testing only happened with well-picked
overlay sizes.
While we're at it, beef up and refactor the error state detection.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ilia Mirkin [Sun, 6 Aug 2017 02:25:02 +0000 (22:25 -0400)]
drm/nouveau/kms/nv04-nv40: prevent undisplayable framebuffers from creation
Pre-nv50 YUV overlays have stringent requirements for working with the
internal machinery. Instead of rejecting these at update_plane time, we
should instead prevent the framebuffers from being created in the first
place.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ilia Mirkin [Sun, 6 Aug 2017 02:19:53 +0000 (22:19 -0400)]
drm/nouveau/mpeg: print more debug info when rejecting dma objects
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Mon, 7 Aug 2017 03:27:31 +0000 (13:27 +1000)]
drm/nouveau/fb/gf100-: zero mmu debug buffers
These are used for accesses to sparse mappings, and we want reads of
such mappings to return 0.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 4 Aug 2017 00:44:34 +0000 (10:44 +1000)]
drm/nouveau/bar/gf100: add config option to limit BAR2 to 16MiB
Useful for testing, and for the userspace build where we can't kick
a framebuffer driver off the device.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ilia Mirkin [Mon, 3 Jul 2017 18:46:21 +0000 (14:46 -0400)]
initial support (display-only) for GP108
Forked from GP107 implementation. Secboot/gr left out as we don't have
signed blobs from NVIDIA in linux-firmware.
(Ben): Was unable to mmiotrace the binary driver for unknown reasons,
so not able to 100% confirm that no other changes from GP107
are needed. Quick testing shows it seems to work well enough
for display. Due to NVIDIA dragging their heels on getting
signed firmware to us, this is the best we can do for now.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101601
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Tue, 1 Aug 2017 06:15:46 +0000 (16:15 +1000)]
drm/nouveau/falcon: use a more reasonable msgqueue timeout value
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Rosen Penev [Wed, 26 Jul 2017 00:21:43 +0000 (17:21 -0700)]
drm/nouveau/disp: Silence DCB warnings.
Most of these errors seem to be WFD related. Official documentation
says dcb type 8 is reserved. It's probably used for WFD. Silence
the warning in either case.
Connector type 70 is stated to be a virtual connector for WiFi
display. Since we know this, don't warn that we don't.
Signed-off by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Rosen Penev [Tue, 25 Jul 2017 21:08:56 +0000 (14:08 -0700)]
drm/nouveau/bios: Demote missing fp table message to NV_DEBUG.
This warning seems to pop up mainly in laptop cards. Silence it as
it is expected behavior.
Signed-off by: Rosen Penev <rosenp@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 21 Jul 2017 00:45:32 +0000 (10:45 +1000)]
drm/nouveau/pmu/gt215-: abstract detection of whether reset is needed
GT215, GF100-GP100, and GP10x are all different.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Fri, 21 Jul 2017 00:33:52 +0000 (10:33 +1000)]
drm/nouveau/pmu/gt215: fix reset
The NV_PMC_ENABLE bit for PMU did not appear until GF100, and some other
unknown register needs to be poked instead.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ben Skeggs [Thu, 20 Jul 2017 04:04:42 +0000 (14:04 +1000)]
drm/nouveau/mc/gf100: add pmu to reset mask
An upcoming commit will replace direct NV_PMC register bashing from PMU
with a call to the proper function.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Ilia Mirkin [Mon, 3 Jul 2017 17:06:26 +0000 (13:06 -0400)]
drm/nouveau/disp/gf119-: avoid creating non-existent heads
We assume that each board has 4 heads for GF119+. However this is not
necessarily true - in the case of a GP108 board, the register indicated
that there were only 2.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101601
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Karol Herbst [Mon, 3 Jul 2017 18:02:51 +0000 (20:02 +0200)]
drm/nouveau/therm/gm200: Added
This allows temperature readouts on maxwell2 GPUs.
Signed-off-by: Karol Herbst <karolherbst@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Colin Ian King [Tue, 27 Jun 2017 08:08:58 +0000 (09:08 +0100)]
drm/nouveau/therm: fix spelling mistake on array thresolds
Array thresolds should be named thresholds, rename it. Also make it static
static const char * const
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Martin Peres <martin.peres@free.fr>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Dave Airlie [Tue, 22 Aug 2017 06:51:11 +0000 (16:51 +1000)]
Merge tag 'imx-drm-next-2017-07-18' of git://git.pengutronix.de/git/pza/linux into drm-next
imx-drm: lock scanout transfers for consecutive bursts
- Lock the IDMAC scanout channel for multiple back-to-back bursts if possible,
to improve memory bandwidth utilisation.
- Replace a few occurences of state->fb with the already existing local fb
variable in ipu_plane_atomic_update
* tag 'imx-drm-next-2017-07-18' of git://git.pengutronix.de/git/pza/linux:
drm/imx: lock scanout transfers for consecutive bursts
drm/imx: ipuv3-plane: use fb local variable instead of state->fb
Dave Airlie [Tue, 22 Aug 2017 00:03:07 +0000 (10:03 +1000)]
Merge tag 'drm-intel-next-2017-08-18' of git://anongit.freedesktop.org/git/drm-intel into drm-next
Final pile of features for 4.14
- New ioctl to change NOA configurations, plus prep (Lionel)
- CCS (color compression) scanout support, based on the fancy new
modifier additions (Ville&Ben)
- Document i915 register macro style (Jani)
- Many more gen10/cnl patches (Rodrigo, Pualo, ...)
- More gpu reset vs. modeset duct-tape to restore the old way.
- prep work for cnl: hpd_pin reorg (Rodrigo), support for more power
wells (Imre), i2c pin reorg (Anusha)
- drm_syncobj support (Jason Ekstrand)
- forcewake vs gpu reset fix (Chris)
- execbuf speedup for the no-relocs fastpath, anv/vk low-overhead ftw (Chris)
- switch to idr/radixtree instead of the resizing ht for execbuf id->vma
lookups (Chris)
gvt:
- MMIO save/restore optimization (Changbin)
- Split workload scan vs. dispatch for more parallel exec (Ping)
- vGPU full 48bit ppgtt support (Joonas, Tina)
- vGPU hw id expose for perf (Zhenyu)
Bunch of work all over to make the igt CI runs more complete/stable.
Watch https://intel-gfx-ci.01.org/tree/drm-tip/shards-all.html for
progress in getting this ready. Next week we're going into production
mode (i.e. will send results to intel-gfx) on hsw, more platforms to
come.
Also, a new maintainer tram, I'm stepping out. Huge thanks to Jani for
being an awesome co-maintainer the past few years, and all the best
for Jani, Joonas&Rodrigo as the new maintainers!
* tag 'drm-intel-next-2017-08-18' of git://anongit.freedesktop.org/git/drm-intel: (179 commits)
drm/i915: Update DRIVER_DATE to
20170818
drm/i915/bxt: use NULL for GPIO connection ID
drm/i915: Mark the GT as busy before idling the previous request
drm/i915: Trivial grammar fix s/opt of/opt out of/ in comment
drm/i915: Replace execbuf vma ht with an idr
drm/i915: Simplify eb_lookup_vmas()
drm/i915: Convert execbuf to use struct-of-array packing for critical fields
drm/i915: Check context status before looking up our obj/vma
drm/i915: Don't use MI_STORE_DWORD_IMM on Sandybridge/vcs
drm/i915: Stop touching forcewake following a gen6+ engine reset
MAINTAINERS: drm/i915 has a new maintainer team
drm/i915: Split pin mapping into per platform functions
drm/i915/opregion: let user specify override VBT via firmware load
drm/i915/cnl: Reuse skl_wm_get_hw_state on Cannonlake.
drm/i915/gen10: implement gen 10 watermarks calculations
drm/i915/cnl: Fix LSPCON support.
drm/i915/vbt: ignore extraneous child devices for a port
drm/i915/cnl: Setup PAT Index.
drm/i915/edp: Allow alternate fixed mode for eDP if available.
drm/i915: Add support for drm syncobjs
...