openwrt/staging/blogic.git
6 years agodrm/xen-front: fix pointer casts
Oleksandr Andrushchenko [Wed, 23 May 2018 11:36:30 +0000 (14:36 +0300)]
drm/xen-front: fix pointer casts

Building for a 32-bit target results in warnings from casting
between a 32-bit pointer and a 64-bit integer. Fix the warnings
by casting those pointers to uintptr_t first.

Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180523113630.29811-1-andr2000@gmail.com
6 years agodrm/i915: Pin the ring high
Chris Wilson [Mon, 21 May 2018 08:21:31 +0000 (09:21 +0100)]
drm/i915: Pin the ring high

If we can use an unmappable ring, try to pin it out of the mappable
aperture. This simple layout preference is to try and keep the mappable
aperture reserved and available to handle GGTT mmapping requests from
userspace without causing evictions and GPU stalls.

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/20180521082131.13744-4-chris@chris-wilson.co.uk
6 years agodrm/i915: Limit searching for PIN_HIGH
Chris Wilson [Mon, 21 May 2018 08:21:30 +0000 (09:21 +0100)]
drm/i915: Limit searching for PIN_HIGH

To no surprise (since we've flip-flopped over the use of PIN_HIGH a few
times), doing a search by address over a pathologically fragmented
address space is exceeding slow. To protect ourselves from nearly
unbounded latency (think searching a million holes while under
struct_mutex), limit the search for the highest available hole and
fallback to best-fit if it fails.

In the pathologically fragmented case, such as igt/gem_ctx_thrash, the
effect is dramatic, bringing the runtime down from hours to seconds
(depending on how many other slow searches you hit, e.g. alloc_iova()
and alloc_vmap_area() both degrade to a slow rbtree walk after their
small cache is exhausted). For the real world, the number of search
steps is unlikely to be significant as we should only need to search
once per new context.

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/20180521082131.13744-3-chris@chris-wilson.co.uk
6 years agodrm/mm: Add a search-by-address variant to only inspect a single hole
Chris Wilson [Mon, 21 May 2018 08:21:29 +0000 (09:21 +0100)]
drm/mm: Add a search-by-address variant to only inspect a single hole

Searching for an available hole by address is slow, as there no
guarantee that a hole will be available and so we must walk over all
nodes in the rbtree before we determine the search was futile. In many
cases, the caller doesn't strictly care for the highest available hole
and was just opportunistically laying out the address space in a
preferred order. In such cases, the caller can accept any address and
would rather do so then do a slow walk.

To be able to mix search strategies, the caller wants to tell the drm_mm
how long to spend on the search. Without a good guide for what should be
the best split, start with a request to try once at most. That is return
the top-most (or lowest) hole if it fulfils the alignment and size
requirements.

v2: Documentation, by why of example (selftests) and kerneldoc.

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/20180521082131.13744-2-chris@chris-wilson.co.uk
6 years agodrm/mm: Reject over-sized allocation requests early
Chris Wilson [Mon, 21 May 2018 08:21:28 +0000 (09:21 +0100)]
drm/mm: Reject over-sized allocation requests early

As we keep an rbtree of available holes sorted by their size, we can
very easily determine if there is any hole large enough that might
satisfy the allocation request. This helps when dealing with a highly
fragmented address space and a request for a search by address.

To cache the largest size, we convert into the cached rbtree variant
which tracks the leftmost node for us. However, currently we sorted into
ascending size order so the leftmost node is the smallest, and so to
make it the largest hole we need to invert our sorting.

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/20180521082131.13744-1-chris@chris-wilson.co.uk
6 years agogpu: drm: vgem: Change return type to vm_fault_t
Souptick Joarder [Mon, 16 Apr 2018 15:02:32 +0000 (20:32 +0530)]
gpu: drm: vgem: Change return type to vm_fault_t

Use new return type vm_fault_t for fault handler.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180416150232.GA26745@jordon-HP-15-Notebook-PC
6 years agogpu: drm: udl: Adding new typedef vm_fault_t
Souptick Joarder [Wed, 25 Apr 2018 04:59:22 +0000 (10:29 +0530)]
gpu: drm: udl: Adding new typedef vm_fault_t

Use new return type vm_fault_t for fault and huge_fault
handler. For now, this is just documenting that the
function returns a VM_FAULT value rather than an errno.
Once all instances are converted, vm_fault_t will become
a distinct type.

Commit 1c8f422059ae ("mm: change return type to vm_fault_t")

Previously vm_insert_page() returns err which driver
mapped into VM_FAULT_* type. The new function vmf_
insert_page() will replace this inefficiency by
returning VM_FAULT_* type.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180425045922.GA21590@jordon-HP-15-Notebook-PC
6 years agodrm/i2c: tda998x: Remove VLA usage
Laura Abbott [Wed, 11 Apr 2018 01:03:30 +0000 (18:03 -0700)]
drm/i2c: tda998x: Remove VLA usage

There's an ongoing effort to remove VLAs[1] from the kernel to eventually
turn on -Wvla. The vla in reg_write_range is based on the length of data
passed. The one use of a non-constant size for this range is bounded by
the size buffer passed to hdmi_infoframe_pack which is a fixed size.
Switch to this upper bound.

[1] https://lkml.org/lkml/2018/3/7/621

Signed-off-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180411010330.17866-1-labbott@redhat.com
6 years agodrm/gma500: Remove VLA
Laura Abbott [Mon, 9 Apr 2018 21:06:47 +0000 (14:06 -0700)]
drm/gma500: Remove VLA

There's an ongoing effort to remove VLAs[1] from the kernel to eventually
turn on -Wvla. Switch to a reasonable upper bound for the VLAs in
the gma500 driver.

[1] https://lkml.org/lkml/2018/3/7/621

Signed-off-by: Laura Abbott <labbott@redhat.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180409210647.3718-1-labbott@redhat.com
6 years agodrm/gma500: Fix Medfield for drm_framebuffer move
Daniel Stone [Mon, 21 May 2018 14:24:49 +0000 (15:24 +0100)]
drm/gma500: Fix Medfield for drm_framebuffer move

Commit bc61c97502e2 ("drm/gma500: Move GEM BO to drm_framebuffer") moved
the gtt_range structure, from being in psb_framebuffer and embedding the
GEM object, to being placed in the drm_framebuffer with the gtt_range
being derived from the GEM object.

The conversion missed out the Medfield subdriver, which was not being
built in the default drm-misc config. Do the trivial fixup here.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reported-by: kbuild test robot <lkp@intel.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Fixes: bc61c97502e2 ("drm/gma500: Move GEM BO to drm_framebuffer")
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180521142449.20800-1-daniels@collabora.com
6 years agodrm/omap: Move buffer pitch/offset to drm_framebuffer
Daniel Stone [Fri, 30 Mar 2018 14:11:21 +0000 (15:11 +0100)]
drm/omap: Move buffer pitch/offset to drm_framebuffer

drm_framebuffer already holds per-plane pitch and offsets, which is
filled out for us when we create the framebuffer. Nuke our local copy in
the plane struct.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-7-daniels@collabora.com
6 years agodrm/omap: Move GEM BO to drm_framebuffer
Daniel Stone [Fri, 30 Mar 2018 14:11:20 +0000 (15:11 +0100)]
drm/omap: Move GEM BO to drm_framebuffer

Since drm_framebuffer can now store GEM objects directly, place them
there rather than in our own subclass. As this makes the framebuffer
create_handle and destroy functions the same as the GEM framebuffer
helper, we can reuse those.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-6-daniels@collabora.com
6 years agodrm/v3d: Checking for NULL vs IS_ERR()
Dan Carpenter [Fri, 18 May 2018 08:10:41 +0000 (11:10 +0300)]
drm/v3d: Checking for NULL vs IS_ERR()

The v3d_fence_create() only returns error pointers on error.  It never
returns NULL.

Fixes: 57692c94dcbe ("drm/v3d: Introduce a new DRM driver for Broadcom V3D V3.x+")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180518081041.GC28335@mwanda
6 years agodrm/rockchip: lvds: avoid duplicating drm_bridge_attach
Peter Rosin [Wed, 2 May 2018 07:40:24 +0000 (09:40 +0200)]
drm/rockchip: lvds: avoid duplicating drm_bridge_attach

drm_bridge_attach takes care of these assignments, so there is no need
to open-code them a second time.

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502074025.12421-3-peda@axentia.se
6 years agodrm/rockchip: rockchip_drm_fb -> drm_framebuffer
Daniel Stone [Fri, 30 Mar 2018 14:11:19 +0000 (15:11 +0100)]
drm/rockchip: rockchip_drm_fb -> drm_framebuffer

Now that rockchip_drm_fb is just a wrapper around drm_framebuffer, we
can remove it.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Heiko Stübner <heiko@sntech.de>
Tested-by: Heiko Stübner <heiko@sntech.de>
Cc: Sandy Huang <hjc@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-5-daniels@collabora.com
6 years agodrm/rockchip: Place GEM BOs in drm_framebuffer
Daniel Stone [Fri, 30 Mar 2018 14:11:18 +0000 (15:11 +0100)]
drm/rockchip: Place GEM BOs in drm_framebuffer

Since drm_framebuffer can now store GEM objects directly, place them
there rather than in our own subclass. As this makes the framebuffer
create_handle and destroy functions the same as the GEM framebuffer
helper, we can reuse those.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Acked-by: Heiko Stübner <heiko@sntech.de>
Tested-by: Heiko Stübner <heiko@sntech.de>
Cc: Sandy Huang <hjc@rock-chips.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-4-daniels@collabora.com
6 years agodrm/mtk: mtk_drm_fb -> drm_framebuffer
Daniel Stone [Fri, 18 May 2018 13:47:05 +0000 (14:47 +0100)]
drm/mtk: mtk_drm_fb -> drm_framebuffer

Now that mtk_drm_fb is an empty wrapper around drm_framebuffer, we can
just delete it.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180518134705.12533-3-daniels@collabora.com
6 years agodrm/mtk: Move GEM BO to drm_framebuffer
Daniel Stone [Fri, 18 May 2018 13:47:04 +0000 (14:47 +0100)]
drm/mtk: Move GEM BO to drm_framebuffer

Since drm_framebuffer can now store GEM objects directly, place them
there rather than in our own subclass. As this makes the framebuffer
create_handle and destroy functions the same as the GEM framebuffer
helper, we can reuse those.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180518134705.12533-2-daniels@collabora.com
6 years agodrm/mtk: Remove impossible internal error
Daniel Stone [Fri, 18 May 2018 13:47:03 +0000 (14:47 +0100)]
drm/mtk: Remove impossible internal error

We cannot create a framebuffer with no objects, so there's no point
testing for it.

v2: Remove the error entirely. (Sean, CK, Thierry)

Signed-off-by: Daniel Stone <daniels@collabora.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: CK Hu <ck.hu@mediatek.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20180518134705.12533-1-daniels@collabora.com
6 years agodrm/msm: Move GEM BOs to drm_framebuffer
Daniel Stone [Fri, 30 Mar 2018 14:11:35 +0000 (15:11 +0100)]
drm/msm: Move GEM BOs to drm_framebuffer

Since drm_framebuffer can now store GEM objects directly, place them
there rather than in our own subclass. As this makes the framebuffer
create_handle function the same as the GEM framebuffer helper, we
can reuse that.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Cc: Rob Clark <robdclark@gmail.com>
Cc: linux-arm-msm@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-21-daniels@collabora.com
6 years agodrm/gma500: Move GEM BO to drm_framebuffer
Daniel Stone [Fri, 30 Mar 2018 14:11:34 +0000 (15:11 +0100)]
drm/gma500: Move GEM BO to drm_framebuffer

Since drm_framebuffer can now store GEM objects directly, place them
there rather than in our own subclass. As this makes the framebuffer
create_handle and destroy functions the same as the GEM framebuffer
helper, we can reuse those.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-20-daniels@collabora.com
6 years agodrm/armada: Move GEM BO to drm_framebuffer
Daniel Stone [Fri, 30 Mar 2018 14:11:33 +0000 (15:11 +0100)]
drm/armada: Move GEM BO to drm_framebuffer

Since drm_framebuffer can now store GEM objects directly, place them
there rather than in our own subclass. As this makes the framebuffer
create_handle and destroy functions the same as the GEM framebuffer
helper, we can reuse those.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Russell King <linux@armlinux.org.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-19-daniels@collabora.com
6 years agodrm/virtio: Place GEM BOs in drm_framebuffer
Daniel Stone [Fri, 30 Mar 2018 14:11:17 +0000 (15:11 +0100)]
drm/virtio: Place GEM BOs in drm_framebuffer

Since drm_framebuffer can now store GEM objects directly, place them
there rather than in our own subclass. As this makes the framebuffer
create_handle and destroy functions the same as the GEM framebuffer
helper, we can reuse those.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-3-daniels@collabora.com
6 years agodrm/cirrus: cirrus_framebuffer -> drm_framebuffer
Daniel Stone [Fri, 30 Mar 2018 14:11:16 +0000 (15:11 +0100)]
drm/cirrus: cirrus_framebuffer -> drm_framebuffer

Now cirrus_framebuffer is just an empty wrapper around drm_framebuffer,
we can drop it.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-2-daniels@collabora.com
6 years agodrm/cirrus: Place GEM BOs in drm_framebuffer
Daniel Stone [Fri, 30 Mar 2018 14:11:15 +0000 (15:11 +0100)]
drm/cirrus: Place GEM BOs in drm_framebuffer

Since drm_framebuffer can now store GEM objects directly, place them
there rather than in our own subclass. As this makes the framebuffer
create_handle and destroy functions the same as the GEM framebuffer
helper, we can reuse those.

Signed-off-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180330141138.28987-1-daniels@collabora.com
6 years agodrm/panel: simple: Fix data type in KEO TX31D200VM0BAA timings
Stefan Agner [Thu, 19 Apr 2018 21:20:03 +0000 (23:20 +0200)]
drm/panel: simple: Fix data type in KEO TX31D200VM0BAA timings

All values in a struct struct timing_entry (every entry in
struct display_timing) require an integer. Choose the closest
safe integer of 32.

This avoids a warning seen with clang:
  drivers/gpu/drm/panel/panel-simple.c:1250:27: warning: implicit
       conversion from 'double' to 'u32' (aka 'unsigned int')
       changes value from 33.5 to 33 [-Wliteral-conversion]
         .vfront_porch = { 6, 21, 33.5 },
                         ~        ^~~~
  drivers/gpu/drm/panel/panel-simple.c:1251:26: warning: implicit
        conversion from 'double' to 'u32' (aka 'unsigned int')
        changes value from 33.5 to 33 [-Wliteral-conversion]
          .vback_porch = { 6, 21, 33.5 },
                         ~        ^~~~

Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180419212003.8155-1-stefan@agner.ch
6 years agodrm/panel: simple: AUO P320HVN03 uses SPWG data ordering
Lucas Stach [Wed, 11 Apr 2018 15:27:41 +0000 (17:27 +0200)]
drm/panel: simple: AUO P320HVN03 uses SPWG data ordering

The patch adding support for the AUO P320HVN03 panel was written against a
preliminary datasheet, which specified JEIDA data ordering. Testing with
real hardware has shown that the actually used data ordering is SPWG.

Fixes: 70c0d5b783f5 (drm/panel: simple: add support for AUO P320HVN03)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180411152741.22483-1-l.stach@pengutronix.de
6 years agodrm/panel: simple: Add Innolux TV123WAM panel driver support
spanda@codeaurora.org [Tue, 15 May 2018 05:52:43 +0000 (11:22 +0530)]
drm/panel: simple: Add Innolux TV123WAM panel driver support

Add support for Innolux TV123WAM, which is a 12.3" eDP display panel
with 2160x1440 resolution.

Changes in v1:
 - Add the compatibility string, display_mode and panel_desc
   structures in alphabetical order (Sean Paul).

Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1526363564-13823-4-git-send-email-spanda@codeaurora.org
6 years agodt-bindings: drm/panel: Document Innolux TV123WAM panel bindings
spanda@codeaurora.org [Tue, 15 May 2018 05:52:44 +0000 (11:22 +0530)]
dt-bindings: drm/panel: Document Innolux TV123WAM panel bindings

Innolux TV123WAM is a 12.3" eDP display panel with
2160x1440 resolution, which can be supported by simple
panel driver.

Changes in v1:
 - Make use of simple panel driver instead of creating
   a new driver for this panel (Sean Paul).
 - Combine dt-binding and driver changes into one patch
   as done by other existing panel support changes.

Changes in v2:
 - Separate driver change from dt-binding documentation (Rob Herring).
 - Add the properties from simple-panel binding that are applicable to
   this panel (Rob Herring).

Signed-off-by: Sandeep Panda <spanda@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1526363564-13823-5-git-send-email-spanda@codeaurora.org
6 years agodrm/bridge: cdns: Mark runtime PM operations as maybe unused
Thierry Reding [Thu, 26 Apr 2018 13:58:53 +0000 (15:58 +0200)]
drm/bridge: cdns: Mark runtime PM operations as maybe unused

Building the driver in a configuration with !PM currently causes a
warning about these operations being unused. Mark them as such to shut
up the compiler.

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180426135853.30895-1-thierry.reding@gmail.com
6 years agodrm/panel: otm8009a: Use new backlight API
Philippe CORNU [Mon, 23 Apr 2018 14:10:53 +0000 (16:10 +0200)]
drm/panel: otm8009a: Use new backlight API

The backlight API provides new functions to enable and disable the
backlight and which hide the intricacies of achieving the correct
result.

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180423141054.13128-5-philippe.cornu@st.com
6 years agodrm/panel: otm8009a: No message if probe success
Philippe CORNU [Mon, 23 Apr 2018 14:10:52 +0000 (16:10 +0200)]
drm/panel: otm8009a: No message if probe success

Remove the message in case of probe success. This comes from a
suggestion followed in the recent integration of the raydium rm68200
panel.

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180423141054.13128-4-philippe.cornu@st.com
6 years agodrm/panel: otm8009a: Fix glitches by moving backlight enable to otm8009a_enable()
Philippe CORNU [Mon, 23 Apr 2018 14:10:51 +0000 (16:10 +0200)]
drm/panel: otm8009a: Fix glitches by moving backlight enable to otm8009a_enable()

The backlight 1st update was in the otm8009a_prepare() function for a
bad reason: backlight was not working in video mode and the
otm8009a_prepare() is in command mode for the init sequence. As the
backlight is now fixed (no low-power mode), it is good to put it back
in the otm8009a_enable() function, avoiding also image glitches visible
on some "slow" devices.

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180423141054.13128-3-philippe.cornu@st.com
6 years agodrm/panel: otm8009a: Fix backlight updates
Philippe CORNU [Mon, 23 Apr 2018 14:10:50 +0000 (16:10 +0200)]
drm/panel: otm8009a: Fix backlight updates

Backlight updates was not working anymore since the good implementation
of the DSI low-power mode in the DSI host driver. After a longer
analysis, the backlight updates in DSI video mode require the DSI high-
speed mode.

Note: it is important to keep the DSI low-power mode for the rest of the
driver as init sequence, sleep in/out... DSI commands work in low-power
mode.

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180423141054.13128-2-philippe.cornu@st.com
6 years agodrm/panel: Add device_link from panel device to DRM device
Jyri Sarha [Thu, 26 Apr 2018 08:07:00 +0000 (11:07 +0300)]
drm/panel: Add device_link from panel device to DRM device

Add device_link from panel device (supplier) to DRM device (consumer)
when drm_panel_attach() is called. This patch should protect the master
DRM driver if an attached panel driver unbinds while it is in use. The
device_link should make sure the DRM device is unbound before the panel
driver becomes unavailable.

The device_link is removed when drm_panel_detach() is called. The
drm_panel_detach() should be called by the consumer DRM driver, not the
panel driver, otherwise both drivers are racing to delete the same link.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/b53584fd988d045c13de22d81825395b0ae0aad7.1524727888.git.jsarha@ti.com
6 years agodrm/panel: Remove drm_panel_detach() calls from all panel drivers
Jyri Sarha [Thu, 26 Apr 2018 08:06:59 +0000 (11:06 +0300)]
drm/panel: Remove drm_panel_detach() calls from all panel drivers

Remove all drm_panel_detach() calls from all panel drivers and update
the kerneldoc for drm_panel_detach().

Setting the connector and drm to NULL when the DRM panel device is going
away hardly serves any purpose. Usually the whole memory structure is
freed right after the remove call. However, calling the detach function
from the master DRM device, and setting the connector pointer to NULL,
has the logic of marking the panel again as available for another DRM
master to attach. The usual situation would be the same DRM master
device binding again.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/464b8d330d6b4c94cfb5aad2ca9ea7eb2c52d934.1524727888.git.jsarha@ti.com
6 years agoi915: content-type property for HDMI connector
Stanislav Lisovskiy [Tue, 15 May 2018 13:59:28 +0000 (16:59 +0300)]
i915: content-type property for HDMI connector

Added encoding of drm content_type property from drm_connector_state
within AVI infoframe in order to properly handle external HDMI TV
content-type setting.

This requires also manipulationg ITC bit, as stated in
HDMI spec.

v2:
 * Moved helper function which attaches content type property
   to the drm core, as was suggested.
   Removed redundant connector state initialization.

v3:
 * Removed caps in drm_content_type_enum_list.
   After some discussion it turned out that HDMI Spec 1.4
   was wrongly assuming that IT Content(itc) bit doesn't affect
   Content type states, however itc bit needs to be manupulated
   as well. In order to not expose additional property for itc,
   for sake of simplicity it was decided to bind those together
   in same "content type" property.

v4:
 * Added it_content checking in intel_digital_connector_atomic_check.
   Fixed documentation for new content type enum.

v5:
 * Moved patch revision's description to commit messages.

v6:
 * Minor naming fix for the content type enumeration string.

v7:
 * Fix parameter name for documentation and parameter alignment
   in order not to get warning. Added Content Type description to
   new HDMI connector properties section.

v8:
 * Thrown away unneeded numbers from HDMI content-type property
   description. Switch to strings desription instead of plain
   definitions.

v9:
 * Moved away hdmi specific content-type enum from
   drm_connector_state. Content type property should probably not
   be bound to any specific connector interface in
   drm_connector_state.
   Same probably should be done to hdmi_picture_aspect_ration enum
   which is also contained in drm_connector_state. Added special
   helper function to get derive hdmi specific relevant infoframe
   fields.

v10:
 * Added usage description to HDMI properties kernel doc.

v11:
 * Created centralized function for filling HDMI AVI infoframe, based
   on correspondent DRM property value.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180515135928.31092-3-stanislav.lisovskiy@intel.com
[vsyrjala: clean up checkpatch multiple blank lines warnings]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
6 years agodrm: content-type property for HDMI connector
Stanislav Lisovskiy [Tue, 15 May 2018 13:59:27 +0000 (16:59 +0300)]
drm: content-type property for HDMI connector

Added content_type property to drm_connector_state
in order to properly handle external HDMI TV content-type setting.

v2:
 * Moved helper function which attaches content type property
   to the drm core, as was suggested.
   Removed redundant connector state initialization.

v3:
 * Removed caps in drm_content_type_enum_list.
   After some discussion it turned out that HDMI Spec 1.4
   was wrongly assuming that IT Content(itc) bit doesn't affect
   Content type states, however itc bit needs to be manupulated
   as well. In order to not expose additional property for itc,
   for sake of simplicity it was decided to bind those together
   in same "content type" property.

v4:
 * Added it_content checking in intel_digital_connector_atomic_check.
   Fixed documentation for new content type enum.

v5:
 * Moved patch revision's description to commit messages.

v6:
 * Minor naming fix for the content type enumeration string.

v7:
 * Fix parameter name for documentation and parameter alignment
   in order not to get warning. Added Content Type description to
   new HDMI connector properties section.

v8:
 * Thrown away unneeded numbers from HDMI content-type property
   description. Switch to strings desription instead of plain
   definitions.

v9:
 * Moved away hdmi specific content-type enum from
   drm_connector_state. Content type property should probably not
   be bound to any specific connector interface in
   drm_connector_state.
   Same probably should be done to hdmi_picture_aspect_ration enum
   which is also contained in drm_connector_state. Added special
   helper function to get derive hdmi specific relevant infoframe
   fields.

v10:
 * Added usage description to HDMI properties kernel doc.

v11:
 * Created centralized function for filling HDMI AVI infoframe, based
   on correspondent DRM property value.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180515135928.31092-2-stanislav.lisovskiy@intel.com
[vsyrjala: clean up checkpatch multiple blank lines warnings]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
6 years agodrm/bridge: spelling and coding style minor fixes
Philippe Cornu [Tue, 15 May 2018 20:37:36 +0000 (22:37 +0200)]
drm/bridge: spelling and coding style minor fixes

Minor fixes detected with "scripts/checkpatch.pl --strict"

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180515203736.9224-1-philippe.cornu@st.com
6 years agodrm/vc4: plane: Expand the lower bits by repeating the higher bits
Maxime Ripard [Thu, 17 May 2018 13:37:59 +0000 (15:37 +0200)]
drm/vc4: plane: Expand the lower bits by repeating the higher bits

The vc4 HVS uses an internal RGB888 representation of the frames, and will
by default expand formats using a lower depth using zeros.

This causes an issue when we try to use other compositing software such as
pixman that fill the missing bits by repeating the higher significant bits.
As such, we can't check the display output in a reliable way by doing a
software composition and an hardware one and compare both.

To prevent this, force the same behaviour so that we can do such things.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180517133759.25626-1-maxime.ripard@bootlin.com
6 years agodrm: clarify adjusted_mode documentation for bridges
Philippe Cornu [Mon, 9 Apr 2018 15:24:27 +0000 (17:24 +0200)]
drm: clarify adjusted_mode documentation for bridges

This patch clarifies the adjusted_mode documentation
for bridges.

Signed-off-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180409152427.12449-1-philippe.cornu@st.com
6 years agodrm/xen-front: fix spelling mistake: "conector" -> "connector"
Colin Ian King [Tue, 15 May 2018 08:54:33 +0000 (09:54 +0100)]
drm/xen-front: fix spelling mistake: "conector" -> "connector"

Trivial fix to spelling mistake in DRM_INFO message.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180515085433.8245-1-colin.king@canonical.com
6 years agogpu: drm: qxl: Adding new typedef vm_fault_t
Souptick Joarder [Tue, 17 Apr 2018 13:38:44 +0000 (19:08 +0530)]
gpu: drm: qxl: Adding new typedef vm_fault_t

Use new return type vm_fault_t for fault handler. For
now, this is just documenting that the function returns
a VM_FAULT value rather than an errno. Once all instances
are converted, vm_fault_t will become a distinct type.

Reference id -> 1c8f422059ae ("mm: change return type to
vm_fault_t")

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180417133844.GA30256@jordon-HP-15-Notebook-PC
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
6 years agodrm/virtio: add define for second capset to the virgl code.
Dave Airlie [Thu, 3 May 2018 02:10:21 +0000 (12:10 +1000)]
drm/virtio: add define for second capset to the virgl code.

Although the kernel doesn't use this, qemu imports these headers
and it's best to keep them consistent.

This define is also something userspace may want to use.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180503021021.10694-1-airlied@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
6 years agodrm: Fix render node numbering regression from control node removal.
Eric Anholt [Wed, 9 May 2018 00:14:25 +0000 (17:14 -0700)]
drm: Fix render node numbering regression from control node removal.

drm_minor_alloc() does multiplication on this enum, so the removal
ended up moving render nodes down from 128 base to 64.  This caused
Mesa's surfaceless backend to be unable to open the render nodes,
since it was still looking up at 128.

v2: Add a comment warning the next person.

Signed-off-by: Eric Anholt <eric@anholt.net>
Fixes: 0d49f303e8a7 ("drm: remove all control node code")
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180509001425.12574-1-eric@anholt.net
6 years agoMerge remote-tracking branch 'drm/drm-next' into drm-misc-next
Maarten Lankhorst [Fri, 11 May 2018 16:08:10 +0000 (18:08 +0200)]
Merge remote-tracking branch 'drm/drm-next' into drm-misc-next

drm-misc-next is still based on v4.16-rc7, and was getting a bit stale.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
6 years agodrm: Add and handle new aspect ratios in DRM layer
Shashank Sharma [Tue, 8 May 2018 11:09:45 +0000 (16:39 +0530)]
drm: Add and handle new aspect ratios in DRM layer

HDMI 2.0/CEA-861-F introduces two new aspect ratios:
- 64:27
- 256:135

This patch:
-  Adds new DRM flags for to represent these new aspect ratios.
-  Adds new cases to handle these aspect ratios while converting
from user->kernel mode or vise versa.

This patch was once reviewed and merged, and later reverted due
to lack of DRM client protection, while adding aspect ratio bits
in user modes. This is a re-spin of the series, with DRM client
cap protection.

The previous series can be found here:
https://pw-emeril.freedesktop.org/series/10850/

Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org> (V2)
Reviewed-by: Jose Abreu <Jose.Abreu@synopsys.com> (V2)
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
V3: rebase
V4: rebase
V5: corrected the macro name for an aspect ratio, in a switch case.
V6: rebase
V7: rebase
V8: rebase
V9: rebase
V10: rebase
V11: rebase
V12: rebase
V13: rebase
V14: rebase

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-11-git-send-email-ankit.k.nautiyal@intel.com
6 years agodrm: Add aspect ratio parsing in DRM layer
Shashank Sharma [Tue, 8 May 2018 11:09:44 +0000 (16:39 +0530)]
drm: Add aspect ratio parsing in DRM layer

Current DRM layer functions don't parse aspect ratio information
while converting a user mode->kernel mode or vice versa. This
causes modeset to pick mode with wrong aspect ratio, eventually
causing failures in HDMI compliance test cases, due to wrong VIC.

This patch adds aspect ratio information in DRM's mode conversion
and mode comparision functions, to make sure kernel picks mode
with right aspect ratio (as per the VIC).

Background:
This patch was once reviewed and merged, and later reverted due to
lack of DRM cap protection. This is a re-spin of this patch, this
time with DRM cap protection, to avoid aspect ratio information, when
the client doesn't request for it.

link: https://pw-emeril.freedesktop.org/patch/104068/
Background discussion: https://patchwork.kernel.org/patch/9379057/

Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Lin, Jia <lin.a.jia@intel.com>
Signed-off-by: Akashdeep Sharma <akashdeep.sharma@intel.com>
Reviewed-by: Jim Bride <jim.bride@linux.intel.com> (V2)
Reviewed-by: Jose Abreu <Jose.Abreu@synopsys.com> (V4)
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Jim Bride <jim.bride@linux.intel.com>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
V3: modified the aspect-ratio check in drm_mode_equal as per new flags
    provided by Ville. https://patchwork.freedesktop.org/patch/188043/
V4: rebase
V5: rebase
V6: As recommended by Ville, avoided matching of aspect-ratio in
    drm_fb_helper, while trying to find a common mode among connectors
    for the target clone mode.
V7: rebase
V8: rebase
V9: rebase
V10: rebase
V11: rebase
V12: rebase
V13: rebase
V14: rebase

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-10-git-send-email-ankit.k.nautiyal@intel.com
6 years agodrm: Expose modes with aspect ratio, only if requested
Ankit Nautiyal [Tue, 8 May 2018 11:09:43 +0000 (16:39 +0530)]
drm: Expose modes with aspect ratio, only if requested

We parse the EDID and add all the modes in the connector's modelist.
This adds CEA modes with aspect ratio information too, regardless of
whether user space requested this information or not.

This patch:
-prunes the modes with aspect-ratio information, from the
 drm_mode_get_connector modelist supplied to the user, if the
 user-space has not set the aspect ratio DRM client cap. However if
 such a mode is unique in the list, it is kept in the list, with
 aspect-ratio flags reset.
-prepares a list of exposed modes, which is used to find unique modes
 if aspect-ratio is not allowed.
-adds a new list_head 'exposed_head' in drm_mode_display, to traverse
 the list of exposed modes.

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: Jose Abreu <jose.abreu@synopsys.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
V3: As suggested by Ville, modified the mechanism of pruning of modes
    with aspect-ratio, if the aspect-ratio is not supported. Instead
    of straight away pruning such a mode, the mode is retained with
    aspect ratio bits set to zero, provided it is unique.
V4: rebase
V5: Addressed review comments from Ville:
    -used a pointer to store last valid mode.
    -avoided, modifying of picture_aspect_ratio in kernel mode,
     instead only flags bits of user mode are reset (if aspect-ratio
     is not supported).
V6: As suggested by Ville, corrected the mode pruning logic and
    elaborated the mode pruning logic and the assumptions taken.
V7: rebase
V8: rebase
V9: rebase
V10: rebase
V11: Fixed the issue caused in kms_3d test, and enhanced the pruning
     logic to correctly identify and prune modes with aspect-ratio,
     if aspect-ratio cap is not set.
V12: As suggested by Ville, added another list_head in
     drm_mode_display to traverse the list of exposed modes and
     avoided duplication of modes.
V13: Minor modifications, as suggested by Ville.
v14: As suggested by Daniel Vetter and Ville Syrjala, corrected the
     pruning logic to avoid any dependency in the order of mode with
     aspect-ratio.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-9-git-send-email-ankit.k.nautiyal@intel.com
6 years agodrm: Handle aspect ratio info in legacy modeset path
Ankit Nautiyal [Tue, 8 May 2018 11:09:42 +0000 (16:39 +0530)]
drm: Handle aspect ratio info in legacy modeset path

If the user-space does not support aspect-ratio, and requests for a
modeset with mode having aspect ratio bits set, then the given
user-mode must be rejected. Secondly, while preparing a user-mode from
kernel mode, the aspect-ratio info must not be given, if aspect-ratio
is not supported by the user.

This patch:
1. rejects the modes with aspect-ratio info, during modeset, if the
   user does not support aspect ratio.
2. does not load the aspect-ratio info in user-mode structure, if
   aspect ratio is not supported.
3. adds helper functions for determining if aspect-ratio is expected
   in user-mode and for allowing/disallowing the aspect-ratio, if its
   not expected.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
V3: Addressed review comments from Ville:
    Do not corrupt the current crtc state by updating aspect-ratio on
    the fly.
V4: rebase
V5: As suggested by Ville, rejected the modeset calls for modes with
    aspect ratio, if the user does not set aspect-ratio cap.
V6: Used the helper functions for determining if aspect-ratio is
    expected in the user-mode.
V7: rebase
V8: rebase
V9: rebase
V10: Modified the commit-message
V11: rebase
V12: Merged the patch for adding aspect-ratio helper functions
     with this patch.
V13: Minor modifications as suggested by Ville.
V14: Removed helper functions, as they were used only once in legacy
     modeset path, as suggested by Daniel Vetter.

Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-8-git-send-email-ankit.k.nautiyal@intel.com
6 years agodrm: Add DRM client cap for aspect-ratio
Ankit Nautiyal [Tue, 8 May 2018 11:09:41 +0000 (16:39 +0530)]
drm: Add DRM client cap for aspect-ratio

To enable aspect-ratio support in DRM, blindly exposing the aspect
ratio information along with mode, can break things in existing
non-atomic user-spaces which have no intention or support to use this
aspect ratio information.

To avoid this, a new drm client cap is required to enable a non-atomic
user-space to advertise if it supports modes with aspect-ratio. Based
on this cap value, the kernel will take a call on exposing the aspect
ratio info in modes or not.

This patch adds the client cap for aspect-ratio.

Since no atomic-userspaces blow up on receiving aspect-ratio
information, the client cap for aspect-ratio is always enabled
for atomic clients.

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
V3: rebase
V4: As suggested by Marteen Lankhorst modified the commit message
    explaining the need to use the DRM cap for aspect-ratio. Also,
    tweaked the comment lines in the code for better understanding and
    clarity, as recommended by Shashank Sharma.
V5: rebase
V6: rebase
V7: rebase
V8: rebase
V9: rebase
V10: rebase
V11: rebase
V12: As suggested by Daniel Vetter and Ville Syrjala,
     always enable aspect-ratio client cap for atomic userspaces,
     if no atomic userspace breaks on aspect-ratio bits.
V13: rebase
V14: rebase

Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-7-git-send-email-ankit.k.nautiyal@intel.com
6 years agovideo/hdmi: Reject illegal picture aspect ratios
Ville Syrjälä [Tue, 8 May 2018 11:09:40 +0000 (16:39 +0530)]
video/hdmi: Reject illegal picture aspect ratios

AVI infoframe can only carry none, 4:3, or 16:9 picture aspect
ratios. Return an error if the user asked for something different.

Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: "Lin, Jia" <lin.a.jia@intel.com>
Cc: Akashdeep Sharma <akashdeep.sharma@intel.com>
Cc: Jim Bride <jim.bride@linux.intel.com>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Hans Verkuil <hans.verkuil@cisco.com>
Cc: linux-media@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-6-git-send-email-ankit.k.nautiyal@intel.com
6 years agodrm/edid: Don't send bogus aspect ratios in AVI infoframes
Ville Syrjälä [Tue, 8 May 2018 11:09:39 +0000 (16:39 +0530)]
drm/edid: Don't send bogus aspect ratios in AVI infoframes

If the user mode would specify an aspect ratio other than 4:3 or 16:9
we now silently ignore it. Maybe a better apporoach is to return an
error? Let's try that.

Also we must be careful that we don't try to send illegal picture
aspect in the infoframe as it's only capable of signalling none,
4:3, and 16:9. Currently we're sending these bogus infoframes
whenever the cea mode specifies some other aspect ratio.

Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-5-git-send-email-ankit.k.nautiyal@intel.com
6 years agodrm/edid: Fix cea mode aspect ratio handling
Ville Syrjälä [Tue, 8 May 2018 11:09:38 +0000 (16:39 +0530)]
drm/edid: Fix cea mode aspect ratio handling

commit 6dffd431e229 ("drm: Add aspect ratio parsing in DRM layer")
cause us to not send out any VICs in the AVI infoframes. That commit
was since reverted, but if and when we add aspect ratio handing back
we need to be more careful.

Let's handle this by considering the aspect ratio as a requirement
for cea mode matching only if the passed in mode actually has a
non-zero aspect ratio field. This will keep userspace that doesn't
provide an aspect ratio working as before by matching it to the
first otherwise equal cea mode. And once userspace starts to
provide the aspect ratio it will be considerd a hard requirement
for the match.

Also change the hdmi mode matching to use drm_mode_match() for
consistency, but we don't match on aspect ratio there since the
spec doesn't list a specific aspect ratio for those modes.

Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: "Lin, Jia" <lin.a.jia@intel.com>
Cc: Akashdeep Sharma <akashdeep.sharma@intel.com>
Cc: Jim Bride <jim.bride@linux.intel.com>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-4-git-send-email-ankit.k.nautiyal@intel.com
6 years agodrm/edid: Use drm_mode_match_no_clocks_no_stereo() for consistentcy
Ville Syrjälä [Tue, 8 May 2018 11:09:37 +0000 (16:39 +0530)]
drm/edid: Use drm_mode_match_no_clocks_no_stereo() for consistentcy

Use drm_mode_equal_no_clocks_no_stereo() in
drm_match_hdmi_mode_clock_tolerance() for consistency as we
also use it in drm_match_hdmi_mode() and the cea mode matching
functions.

This doesn't actually change anything since the input mode
comes from detailed timings and we match it against
edid_4k_modes[] which. So none of those modes can have stereo
flags set.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-3-git-send-email-ankit.k.nautiyal@intel.com
6 years agodrm/modes: Introduce drm_mode_match()
Ville Syrjälä [Tue, 8 May 2018 11:09:36 +0000 (16:39 +0530)]
drm/modes: Introduce drm_mode_match()

Make mode matching less confusing by allowing the caller to specify
which parts of the modes should match via some flags.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1525777785-9740-2-git-send-email-ankit.k.nautiyal@intel.com
6 years agodrm: panel-orientation-quirks: Convert to use match_string() helper
Andy Shevchenko [Thu, 3 May 2018 18:41:19 +0000 (21:41 +0300)]
drm: panel-orientation-quirks: Convert to use match_string() helper

The new helper returns index of the matching string in an array.
We are going to use it here.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503184119.22355-1-andriy.shevchenko@linux.intel.com
6 years agodrm/dp: Correctly mask DP_TRAINING_AUX_RD_INTERVAL values for DP 1.4
Matt Atwood [Fri, 4 May 2018 22:18:00 +0000 (15:18 -0700)]
drm/dp: Correctly mask DP_TRAINING_AUX_RD_INTERVAL values for DP 1.4

DP_TRAINING_AUX_RD_INTERVAL with DP 1.3 spec changed bit scheeme from 8
bits to 7 in DPCD 0x000e. The 8th bit is used to identify extended
receiver capabilities. For panels that use this new feature wait interval
would be increased by 512 ms, when spec is max 16 ms. This behavior is
described in table 2-158 of DP 1.4 spec address 0000eh.

With the introduction of DP 1.4 spec main link clock recovery was
standardized to 100 us regardless of TRAINING_AUX_RD_INTERVAL value.

To avoid breaking panels that are not spec compiant we now warn on
invalid values.

V2: commit title/message, masking all 7 bits, warn on out of spec values.
V3: commit message, make link train clock recovery follow DP 1.4 spec.
V4: style changes
V5: typo
V6: print statement revisions, DP_REV to DPCD_REV, comment correction
V7: typo
V8: Style
V9: Strip out DPCD_REV_XX into seperate patch
v10: DPCD_REV_XX to DP_DPCD_REV_XX

Signed-off-by: Matt Atwood <matthew.s.atwood@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/20180504221800.17830-2-matthew.s.atwood@intel.com
6 years agodrm/dp: Add DP_DPCD_REV_XX to drm_dp_helper
Matt Atwood [Fri, 4 May 2018 22:17:59 +0000 (15:17 -0700)]
drm/dp: Add DP_DPCD_REV_XX to drm_dp_helper

As more differentation occurs between DP spec. Its useful to have these
as macros in a drm_dp_helper.

v2: DPCD_REV_XX to DP_DPCD_REV_XX

Signed-off-by: Matt Atwood <matthew.s.atwood@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/20180504221800.17830-1-matthew.s.atwood@intel.com
6 years agodrm/xen-front: Fix loop timeout
Dan Carpenter [Tue, 8 May 2018 09:28:29 +0000 (12:28 +0300)]
drm/xen-front: Fix loop timeout

If the loop times out then we want to exit with "to" set to zero, but in
the current code it's set to -1.

Fixes: c575b7eeb89f ("drm/xen-front: Add support for Xen PV display frontend")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508092829.GC661@mwanda
6 years agodrm/xen-front: fix xen_drm_front_shbuf_alloc() error handling
Dan Carpenter [Tue, 8 May 2018 09:27:39 +0000 (12:27 +0300)]
drm/xen-front: fix xen_drm_front_shbuf_alloc() error handling

The xen_drm_front_shbuf_alloc() function was returning a mix of error
pointers and NULL and the the caller wasn't checking correctly.  I've
changed it to always return error pointer consistently.

Fixes: c575b7eeb89f ("drm/xen-front: Add support for Xen PV display frontend")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508092739.GB661@mwanda
6 years agodrm/xen-front: checking for NULL instead of IS_ERR
Dan Carpenter [Tue, 8 May 2018 09:26:50 +0000 (12:26 +0300)]
drm/xen-front: checking for NULL instead of IS_ERR

drm_dev_alloc() returns error pointers, it never returns NULL.

Fixes: c575b7eeb89f ("drm/xen-front: Add support for Xen PV display frontend")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508092650.GA661@mwanda
6 years agodma-buf: Remove unneeded stubs around sync_debug interfaces
Ezequiel Garcia [Fri, 4 May 2018 18:00:37 +0000 (15:00 -0300)]
dma-buf: Remove unneeded stubs around sync_debug interfaces

The sync_debug.h header is internal, and only used by
sw_sync.c. Therefore, SW_SYNC is always defined and there
is no need for the stubs. Remove them and make the code
simpler.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180504180037.10661-1-ezequiel@collabora.com
6 years agodrm/selftests: Add drm helper selftest
Maarten Lankhorst [Thu, 3 May 2018 11:22:17 +0000 (13:22 +0200)]
drm/selftests: Add drm helper selftest

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503112217.37292-6-maarten.lankhorst@linux.intel.com
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
6 years agodrm/selftests: Rename the Kconfig option to CONFIG_DRM_DEBUG_SELFTEST
Maarten Lankhorst [Thu, 3 May 2018 11:22:16 +0000 (13:22 +0200)]
drm/selftests: Rename the Kconfig option to CONFIG_DRM_DEBUG_SELFTEST

We want to add more DRM selftests, and there's not much point in
having a Kconfig option for every single one of them, so make
a generic one.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503112217.37292-5-maarten.lankhorst@linux.intel.com
[mlankhorst: Fix i915/Kconfig.debug (ickle)]
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
6 years agodrm/i915: Do not adjust scale when out of bounds, v2.
Maarten Lankhorst [Thu, 3 May 2018 11:22:15 +0000 (13:22 +0200)]
drm/i915: Do not adjust scale when out of bounds, v2.

With the previous patch drm_atomic_helper_check_plane_state correctly
calculates clipping and the xf86-video-intel ddx is fixed to fall back
to GPU correctly when SetPlane fails, we can remove the hack where
we try to pan/zoom when out of min/max scaling range. This was already
poor behavior where the screen didn't show what was requested, and now
instead we reject it outright. This simplifies check_sprite_plane a lot.

Changes since v1:
- Set crtc_h to the height correctly.
- Reject < 3x3 rectangles instead of making them invisible for <gen9.
  For gen9+ skl_update_scaler_plane will reject them.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503112217.37292-4-maarten.lankhorst@linux.intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
6 years agodrm/rect: Handle rounding errors in drm_rect_clip_scaled, v3.
Maarten Lankhorst [Thu, 3 May 2018 11:22:14 +0000 (13:22 +0200)]
drm/rect: Handle rounding errors in drm_rect_clip_scaled, v3.

Instead of relying on a scale which may increase rounding errors,
clip src by doing: src * (dst - clip) / dst and rounding the result
away from 1, so the new coordinates get closer to 1. We won't need
to fix up with a magic macro afterwards, because our scaling factor
will never go to the other side of 1.

Changes since v1:
- Adjust dst immediately, else drm_rect_width/height on dst gives bogus
  results.
Change since v2:
- Get rid of macros and use 64-bits math.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[mlankhorst: Add Villes comment, and rename newsrc to tmp. (Ville)]
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503112217.37292-3-maarten.lankhorst@linux.intel.com
6 years agodrm/rect: Round above 1 << 16 upwards to correct scale calculation functions.
Maarten Lankhorst [Thu, 3 May 2018 11:22:13 +0000 (13:22 +0200)]
drm/rect: Round above 1 << 16 upwards to correct scale calculation functions.

When calculating limits we want to be as pessimistic as possible,
so we have to explicitly say whether we want to round up or down
to accurately calculate whether we are below min_scale or above
max_scale.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[mlankhorst: Fix wording in documentation. (Ville)]
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503112217.37292-2-maarten.lankhorst@linux.intel.com
6 years agogpu: drm: bridge: adv7511: Replace mdelay with usleep_range in adv7511_probe
Jia-Ju Bai [Wed, 11 Apr 2018 08:33:42 +0000 (16:33 +0800)]
gpu: drm: bridge: adv7511: Replace mdelay with usleep_range in adv7511_probe

adv7511_probe() is never called in atomic context.
This function is only set as ".probe" in struct i2c_driver.

Despite never getting called from atomic context, adv7511_probe()
calls mdelay() to busily wait.
This is not necessary and can be replaced with usleep_range() to
avoid busy waiting.

This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1523435622-4329-1-git-send-email-baijiaju1990@gmail.com
6 years agodrm/bridge: adv7511: fix spelling of driver name in Kconfig
Peter Rosin [Thu, 26 Apr 2018 21:36:44 +0000 (23:36 +0200)]
drm/bridge: adv7511: fix spelling of driver name in Kconfig

Could perhaps prevent some confusion.

Signed-off-by: Peter Rosin <peda@axentia.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180426213644.29318-1-peda@axentia.se
6 years agoMerge tag 'drm-intel-next-2018-04-13' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Fri, 4 May 2018 00:31:10 +0000 (10:31 +1000)]
Merge tag 'drm-intel-next-2018-04-13' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

First drm/i915 feature batch heading for v4.18:

- drm-next backmerge to fix build (Rodrigo)
- GPU documentation improvements (Kevin)
- GuC and HuC refactoring, host/GuC communication, logging, fixes, and more
  (mostly Michal and Michał, also Jackie, Michel and Piotr)
- PSR and PSR2 enabling and fixes (DK, José, Rodrigo and Chris)
- Selftest updates (Chris, Daniele)
- DPLL management refactoring (Lucas)
- DP MST fixes (Lyude and DK)
- Watermark refactoring and changes to support NV12 (Mahesh)
- NV12 prep work (Chandra)
- Icelake Combo PHY enablers (Manasi)
- Perf OA refactoring and ICL enabling (Lionel)
- ICL enabling (Oscar, Paulo, Nabendu, Mika, Kelvin, Michel)
- Workarounds refactoring (Oscar)
- HDCP fixes and improvements (Ramalingam, Radhakrishna)
- Power management fixes (Imre)
- Various display fixes (Maarten, Ville, Vidya, Jani, Gaurav)
- debugfs for FIFO underrun clearing (Maarten)
- Execlist improvements (Chris)
- Reset improvements (Chris)
- Plenty of things here and there I overlooked and/or didn't understand... (Everyone)

Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87lgd2cze8.fsf@intel.com
6 years agodrm/v3d: Introduce a new DRM driver for Broadcom V3D V3.x+
Eric Anholt [Mon, 30 Apr 2018 18:10:58 +0000 (11:10 -0700)]
drm/v3d: Introduce a new DRM driver for Broadcom V3D V3.x+

This driver will be used to support Mesa on the Broadcom 7268 and 7278
platforms.

V3D 3.3 introduces an MMU, which means we no longer need CMA or vc4's
complicated CL/shader validation scheme.  This massively changes the
GEM behavior, so I've forked off to a new driver.

v2: Mark SUBMIT_CL as needing DRM_AUTH.  coccinelle fixes from kbuild
    test robot. Drop personal git link from MAINTAINERS.  Don't
    double-map dma-buf imported BOs.  Add kerneldoc about needing MMU
    eviction.  Drop prime vmap/unmap stubs.  Delay mmap offset setup
    to mmap time.  Use drm_dev_init instead of _alloc.  Use
    ktime_get() for wait_bo timeouts.  Drop drm_can_sleep() usage,
    since we don't modeset.  Switch page tables back to WC (debug
    change to coherent had slipped in).  Switch
    drm_gem_object_unreference_unlocked() to
    drm_gem_object_put_unlocked().  Simplify overflow mem handling by
    not sharing overflow mem between jobs.
v3: no changes
v4: align submit_cl to 64 bits (review by airlied), check zero flags in
    other ioctls.

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v4)
Acked-by: Dave Airlie <airlied@linux.ie> (v3, requested submit_cl change)
Link: https://patchwork.freedesktop.org/patch/msgid/20180430181058.30181-3-eric@anholt.net
6 years agodt-bindings: Add a new binding for Broadcom V3D 3.x and newer GPUs.
Eric Anholt [Mon, 30 Apr 2018 18:10:57 +0000 (11:10 -0700)]
dt-bindings: Add a new binding for Broadcom V3D 3.x and newer GPUs.

These OpenGL ES GPUs are present in the 7268 and 7278 set top box
chips.

v2: no changes
v3: move to gpu/, fix typo

Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180430181058.30181-2-eric@anholt.net
Reviewed-by: Rob Herring <robh@kernel.org>
6 years agodrm/vc4: Add a pad field to align drm_vc4_submit_cl to 64 bits.
Eric Anholt [Mon, 30 Apr 2018 23:59:27 +0000 (16:59 -0700)]
drm/vc4: Add a pad field to align drm_vc4_submit_cl to 64 bits.

I had originally asked Stefan Schake to drop the pad field from the
syncobj changes that just landed, because I couldn't come up with a
reason to align to 64 bits.

Talking with Dave Airlie about the new v3d driver's submit ioctl, we
came up with a reason: sizeof() on 64-bit platforms may align to 64
bits, in which case the userspace will be submitting the aligned size
and the final 32 bits won't be zero-padded by the kernel.  If
userspace doesn't zero-fill, then a future ABI change adding a 32-bit
field at the end could potentially cause the kernel to read undefined
data from old userspace (our userspace happens to use structure
initialization that zero-fills, but as a general rule we try not to
rely on that in the kernel).

Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180430235927.28712-1-eric@anholt.net
Reviewed-by: Stefan Schake <stschake@gmail.com>
6 years agodrm/pl111: Fix module probe bug
Linus Walleij [Thu, 3 May 2018 14:04:31 +0000 (16:04 +0200)]
drm/pl111: Fix module probe bug

Commit a30933c27602 ("drm/pl111: Support the Versatile Express")
Added a second module using the builtin_platform_driver() call,
which works fine as long as you do not try to build the PL111
driver as a module, because a module can only have one initcall
and cause the following build bug:

(...) multiple definition of `init_module' (...)

Reported-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Fixes: a30933c27602 ("drm/pl111: Support the Versatile Express")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503140431.5798-1-linus.walleij@linaro.org
6 years agodrm: remove all control node code
Daniel Vetter [Fri, 20 Apr 2018 06:51:59 +0000 (08:51 +0200)]
drm: remove all control node code

With the ioctl and driver prep done, we can remove everything else.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Link: https://patchwork.freedesktop.org/patch/msgid/20180420065159.4531-4-daniel.vetter@ffwll.ch
6 years agodrm/msm: Don't setup control node debugfs files
Daniel Vetter [Thu, 3 May 2018 09:31:07 +0000 (11:31 +0200)]
drm/msm: Don't setup control node debugfs files

It's going away.

v2: Try harder to find them all.

Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Jordan Crouse <jcrouse@codeaurora.org>
Cc: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Cc: Archit Taneja <architt@codeaurora.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503093107.25955-1-daniel.vetter@ffwll.ch
6 years agodrm/atomic: Handling the case when setting old crtc for plane
Satendra Singh Thakur [Thu, 3 May 2018 05:49:32 +0000 (11:19 +0530)]
drm/atomic: Handling the case when setting old crtc for plane

In the func drm_atomic_set_crtc_for_plane, with the current code,
if crtc of the plane_state and crtc passed as argument to the func
are same, entire func will executed in vein.
It will get state of crtc and clear and set the bits in plane_mask.
All these steps are not required for same old crtc.
Ideally, we should do nothing in this case, this patch handles the same,
and causes the program to return without doing anything in such scenario.

Signed-off-by: Satendra Singh Thakur <satendra.t@samsung.com>
Cc: Madhur Verma <madhur.verma@samsung.com>
Cc: Hemanshu Srivastava <hemanshu.s@samsung.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1525326572-25854-1-git-send-email-satendra.t@samsung.com
6 years agoRevert 190c462d5be19ba622a82f5fd0625087c870a1e6..bf3012ada1b2222e770de5c35c1bb16f73b3...
Daniel Vetter [Thu, 3 May 2018 10:31:38 +0000 (12:31 +0200)]
Revert 190c462d5be19ba622a82f5fd0625087c870a1e6..bf3012ada1b2222e770de5c35c1bb16f73b3a01d"

I shouldn't have pushed this, CI was right - I failed to remove the
BUG_ON(!ops->wait);

Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
6 years agodrm/qxl: Remove unecessary dma_fence_ops
Daniel Vetter [Wed, 2 May 2018 08:23:25 +0000 (10:23 +0200)]
drm/qxl: Remove unecessary dma_fence_ops

The trivial enable_signaling implementation matches the default code.

v2: Fix up commit message to match patch better (Eric).

Cc: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180502082325.30264-1-daniel.vetter@ffwll.ch
6 years agodrm: Remove unecessary dma_fence_ops
Daniel Vetter [Fri, 27 Apr 2018 06:17:14 +0000 (08:17 +0200)]
drm: Remove unecessary dma_fence_ops

dma_fence_default_wait is the default now, same for the trivial
enable_signaling implementation.

Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-8-daniel.vetter@ffwll.ch
6 years agodma-fence: Make ->wait callback optional
Daniel Vetter [Fri, 27 Apr 2018 06:17:12 +0000 (08:17 +0200)]
dma-fence: Make ->wait callback optional

Almost everyone uses dma_fence_default_wait.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-6-daniel.vetter@ffwll.ch
6 years agodma-fence: Allow wait_any_timeout for all fences
Daniel Vetter [Fri, 27 Apr 2018 06:17:11 +0000 (08:17 +0200)]
dma-fence: Allow wait_any_timeout for all fences

When this was introduced in

commit a519435a96597d8cd96123246fea4ae5a6c90b02
Author: Christian König <christian.koenig@amd.com>
Date:   Tue Oct 20 16:34:16 2015 +0200

    dma-buf/fence: add fence_wait_any_timeout function v2

there was a restriction added that this only works if the dma-fence
uses the dma_fence_default_wait hook. Which works for amdgpu, which is
the only caller. Well, until you share some buffers with e.g. i915,
then you get an -EINVAL.

But there's really no reason for this, because all drivers must
support callbacks. The special ->wait hook is only as an optimization;
if the driver needs to create a worker thread for an active callback,
then it can avoid to do that if it knows that there's a process
context available already. So ->wait is just an optimization, just
using the logic in dma_fence_default_wait() should work for all
drivers.

Let's remove this restriction.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-5-daniel.vetter@ffwll.ch
6 years agodma-fence: Make ->enable_signaling optional
Daniel Vetter [Fri, 27 Apr 2018 06:17:10 +0000 (08:17 +0200)]
dma-fence: Make ->enable_signaling optional

Many drivers have a trivial implementation for ->enable_signaling.
Let's make it optional by assuming that signalling is already
available when the callback isn't present.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-4-daniel.vetter@ffwll.ch
6 years agodma-fence: remove fill_driver_data callback
Daniel Vetter [Wed, 2 May 2018 08:23:59 +0000 (10:23 +0200)]
dma-fence: remove fill_driver_data callback

Noticed while I was typing docs. Entirely unused.

v2: Remove reference in @timeline_value_str too. While at it clarify
why timeline_value_str has a fence parameter - we don't have an
explicit timeline structure unfortunately.

Cc: Eric Anholt <eric@anholt.net>
Reviewed-by: Christian König <christian.koenig@amd.com> (v1)
Reviewed-by: Eric Anholt <eric@anholt.net>
Cc: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502082359.30345-1-daniel.vetter@ffwll.ch
6 years agodrm/vmwgfx: Drop DRM_CONTROL_ALLOW
Daniel Vetter [Fri, 20 Apr 2018 06:51:58 +0000 (08:51 +0200)]
drm/vmwgfx: Drop DRM_CONTROL_ALLOW

Control nodes are no more!

Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: Sinclair Yeh <syeh@vmware.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180420065159.4531-3-daniel.vetter@ffwll.ch
6 years agodrm/i915: Drop DRM_CONTROL_ALLOW
Daniel Vetter [Fri, 20 Apr 2018 06:51:57 +0000 (08:51 +0200)]
drm/i915: Drop DRM_CONTROL_ALLOW

Control nodes are no more!

Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: intel-gfx@lists.freedesktop.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180420065159.4531-2-daniel.vetter@ffwll.ch
6 years agodrm: Drop DRM_CONTROL_ALLOW from ioctls
Daniel Vetter [Fri, 20 Apr 2018 06:51:56 +0000 (08:51 +0200)]
drm: Drop DRM_CONTROL_ALLOW from ioctls

We've disabled control nodes in

commit 8a357d10043c75e980e7fcdb60d2b913491564af
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Oct 28 10:10:50 2016 +0200

    drm: Nerf DRM_CONTROL nodes

and there was only a minor uapi break that we've paper over with

commit 6449b088dd51dd5aa6b38455888bbf538d21f2fc
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Fri Dec 9 14:56:56 2016 +0100

    drm: Add fake controlD* symlinks for backwards compat

Since then Keith has also added real control nodes with a
proper&useable uapi in the form of drm leases.

It's time to remove the control node leftovers.

Cc: Keith Packard <keithp@keithp.com>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Link: https://patchwork.freedesktop.org/patch/msgid/20180420065159.4531-1-daniel.vetter@ffwll.ch
6 years agodrm/rect: Fix drm_rect_rotation_inv() docs
Ville Syrjälä [Thu, 26 Apr 2018 14:16:31 +0000 (17:16 +0300)]
drm/rect: Fix drm_rect_rotation_inv() docs

An overeager sed has corrupted the drm_rect_rotation_inv()
documentation. Fix it up.

Looks like it wasn't entirely correct before the sed fail
either. We were missing _rect_ from the function names, which
also explains why the sed hit these by accident.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180426141631.15798-1-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
6 years agodrm/pl111: Enable device-specific assigned memory
Linus Walleij [Wed, 2 May 2018 13:47:19 +0000 (15:47 +0200)]
drm/pl111: Enable device-specific assigned memory

The Versatile Express has 8 MB of dedicated video RAM (VRAM)
on the motherboard, which is what we should be using for the
PL111 if available. On this platform, the memory backplane
is constructed so that only this memory will work properly
with the CLCD on the motherboard, using any other memory
area just gives random snow on the display.

The CA9 Versatile Express also has a PL111 instance on its
core tile that can address all memory, and this does not
have the restriction.

The memory is assigned to the device using the memory-region
device tree property and a "shared-dma-pool" reserved
memory pool like this:

reserved-memory {
        #address-cells = <1>;
        #size-cells = <1>;
        ranges;

        vram: vram@48000000 {
                compatible = "shared-dma-pool";
                reg = <0x48000000 0x00800000>;
                no-map;
        };
};

clcd@1f000 {
        compatible = "arm,pl111", "arm,primecell";
(...)
        memory-region = <&vram>;
}·;

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Mali DP Maintainers <malidp@foss.arm.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502134719.8388-2-linus.walleij@linaro.org
6 years agodrm/pl111: Support the Versatile Express
Linus Walleij [Wed, 2 May 2018 13:47:18 +0000 (15:47 +0200)]
drm/pl111: Support the Versatile Express

The Versatile Express uses a special configuration controller
deeply embedded in the system motherboard FPGA to multiplex the
two to three (!) display controller instances out to the single
SiI9022 bridge.

Set up an extra file with the logic to probe to the FPGA mux
register on the system controller bus, then parse the device
tree to see if there is a CLCD or HDLCD instance on the core
tile (also known as the daughterboard) by looking in the
root of the device tree for compatible nodes.

- If there is a HDLCD on the core tile, and there is a driver
  for it, we exit probe and deactivate the motherboard CLCD.
  We do not touch the DVI mux in this case, to make sure we
  don't break HDLCD.

- If there is a CLCD on both the motherboard and the core tile
  (only the CA9 has this) the core tile CLCD takes precedence
  and get muxed to the DVI connector.

- Only if there is no working graphics on the core tile, the
  motherboard CLCD is probed and muxed to the DVI connector.

Core tile graphics should always take precedence as it can
address all memory and is also faster, however the motherboard
CLCD is good to have around for diagnostics and testing.

It is possible to test the motherboard CLCD by setting the
status = "disabled" property on the core tile CLCD or
HDLCD.

Scale down the Versatile Express to 16BPP so we can support a
1024x768 display despite the bus bandwidth restrictions on this
platform. (The motherboard CLCD supports slightly lower
resolution.)

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Acked-by: Eric Anholt <eric@anholt.net>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502134719.8388-1-linus.walleij@linaro.org
6 years agogpu: drm: sti: fix spelling mistake: "initialze" -> "initialize"
Colin Ian King [Wed, 2 May 2018 10:10:48 +0000 (11:10 +0100)]
gpu: drm: sti: fix spelling mistake: "initialze" -> "initialize"

Trivial fix to spelling mistake in DRM_ERROR error message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180502101048.8442-1-colin.king@canonical.com
6 years agodma-fence: Some kerneldoc polish for dma-fence.h
Daniel Vetter [Fri, 27 Apr 2018 06:17:08 +0000 (08:17 +0200)]
dma-fence: Some kerneldoc polish for dma-fence.h

- Switch to inline member docs for dma_fence_ops.
- Mild polish all around.
- hyperlink all the things!

v2: - Remove the various [in] annotations, they seem really uncommon
in kerneldoc and look funny.

v3: Linebreak the "Returns" part of the @fill_driver_data kerneldoc
(Eric).

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-2-daniel.vetter@ffwll.ch
6 years agodrm/rockchip: Disable blending for win0
Kristian H. Kristensen [Wed, 18 Apr 2018 17:31:52 +0000 (10:31 -0700)]
drm/rockchip: Disable blending for win0

Blending win0 with the background color doesn't seem to work
correctly. We only get the background color, no matter the contents of
the win0 framebuffer.  However, blending pre-multiplied color with the
default opaque black default background color is a no-op, so we can
just disable blending to get the correct result.

Signed-off-by: Kristian H. Kristensen <hoegsberg@chromium.org>
Cc: Sandy Huang <hjc@rock-chips.com>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180418173152.93246-1-hoegsberg@chromium.org
6 years agodrm/vc4: Enable syncobj support
Stefan Schake [Tue, 24 Apr 2018 22:03:47 +0000 (00:03 +0200)]
drm/vc4: Enable syncobj support

This doesn't require any additional functionality from the driver but
is a prerequisite to userland calling the syncobj ioctls.

Signed-off-by: Stefan Schake <stschake@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1524607427-12876-4-git-send-email-stschake@gmail.com
6 years agodrm/vc4: Export fence through syncobj
Stefan Schake [Tue, 24 Apr 2018 22:03:46 +0000 (00:03 +0200)]
drm/vc4: Export fence through syncobj

Allow specifying a syncobj on render job submission where we store the
fence for the job. This gives userland flexible access to the fence.

v2: Use 0 as invalid syncobj to drop flag (Eric)
    Don't reintroduce the padding (Eric)

Signed-off-by: Stefan Schake <stschake@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1524607427-12876-3-git-send-email-stschake@gmail.com
6 years agodrm/vc4: Syncobj import support
Stefan Schake [Tue, 24 Apr 2018 22:03:45 +0000 (00:03 +0200)]
drm/vc4: Syncobj import support

Allow userland to specify a syncobj that is waited on before a render job
starts processing.

v2: Use 0 as invalid syncobj to drop flag (Eric)
    Drop extra newline (Eric)

Signed-off-by: Stefan Schake <stschake@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/1524607427-12876-2-git-send-email-stschake@gmail.com
6 years agodrm/panel: Enable DSI transactions on the RPi panel.
Eric Anholt [Tue, 31 Oct 2017 19:32:58 +0000 (12:32 -0700)]
drm/panel: Enable DSI transactions on the RPi panel.

It turns out that I had just mistaken what type of write the register
writes were supposed to be, using DCS instead of generic long writes.

Switching to transactions instead of using the atmel as a bridge also
seems to resolve the sparkling pixels problem I've had.

Signed-off-by: Eric Anholt <eric@anholt.net>
Fixes: 2f733d6194bd ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.")
Link: https://patchwork.freedesktop.org/patch/msgid/20171031193258.17373-2-eric@anholt.net
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Thierry Reding <treding@nvidia.com>
6 years agodrm/vc4: Skip ULPS latching when we're in that ULPS state already.
Eric Anholt [Tue, 31 Oct 2017 19:32:57 +0000 (12:32 -0700)]
drm/vc4: Skip ULPS latching when we're in that ULPS state already.

It seems that trying to go from unlatched to unlatched will time out
waiting for STOP, and we can just skip that.

Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20171031193258.17373-1-eric@anholt.net
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
6 years agodrm/vc4: make function vc4_allocate_bin_bo static
Vaishali Thakkar [Wed, 25 Apr 2018 07:09:53 +0000 (12:39 +0530)]
drm/vc4: make function vc4_allocate_bin_bo static

Sparse complains with following warning:
drivers/gpu/drm/vc4/vc4_v3d.c:222:1: warning: symbol
'vc4_allocate_bin_bo' was not declared. Should it be static?

Make vc4_allocate_bin static as it is not used outside of
vc4_v3d.c.

Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20180425070953.17933-1-vthakkar1994@gmail.com