When binding the TCON, we were checking the reset control status and
asserting reset if it wasn't in reset. The check failed to account for
the reset control API returning error codes if the status callback was
not implemented.

Since we want the TCON to be reset in all cases, use reset_control_reset
to force a reset instead.

Fixes: 9026e0d1 ("drm: Add Allwinner A10 Display Engine support")
Signed-off-by: NChen-Yu Tsai <wens@csie.org>
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170908090016.32224-1-wens@csie.org

sun4i-drm is maintained in drm-misc as a small driver.
Signed-off-by: NMaxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170908194039.882-1-maxime.ripard@free-electrons.com

To avoid hanging userspace components that might have been waiting on the
active fences of the destroyed timeline we need to signal with error all
remaining fences on such timeline.

This restore the default behaviour of the Android sw_sync framework, which
Android still relies on. It was broken on the dma fence conversion a few
years ago and never fixed.

v2: Do not bother with cleanup do the list (Chris Wilson)
Reviewed-by: NChris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: NDominik Behr <dbehr@chromium.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170907190246.16425-2-gustavo@padovan.org

The current error handling when devm_kzalloc fails performs a
non-null check on connector which is redundant because connector
is null at that failure point.  Once this is removed, make the
failure path into a trivial -ENOMEM return to clean up the
error handling. Also remove need to initialize connector to NULL.

Detected by CoverityScan CID#1339527 ("Logically dead code")
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NEric Anholt <eric@anholt.net>
Reviewed-by: NEric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20170908140504.1340-1-colin.king@canonical.com

Now that we have the DRM_DEV_* variants, we should use them.
Signed-off-by: NSean Paul <seanpaul@chromium.org>
Reviewed-by: NDaniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170908143218.9701-1-seanpaul@chromium.org

Now that the last users have been converted, we can finally get rid of
for_each_obj_in_state, we have better macros to replace them with.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
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>
Link: https://patchwork.freedesktop.org/patch/msgid/20170719143920.25685-8-maarten.lankhorst@linux.intel.comReviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

By always keeping track of the last commit in plane_state, we know
whether there is an active update on the plane or not. With that
information we can reject the fast update, and force the slowpath
to be used as was originally intended.

We cannot use plane_state->crtc->state here, because this only mentions
the most recent commit for the crtc, but not the planes that were part
of it. We specifically care about what the last commit involving this
plane is, which can only be tracked with a pointer in the plane state.

Changes since v1:
- Clean up the whole function here, instead of partially earlier.
- Add mention in the commit message why we need commit in plane_state.
- Swap plane->state in intel_legacy_cursor_update, instead of
  reassigning all variables. With this commit We know that the cursor
  is not part of any active commits so this hack can be removed.

Cc: Gustavo Padovan <gustavo.padovan@collabora.com>
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NGustavo Padovan <gustavo.padovan@collabora.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> #v1
Link: https://patchwork.freedesktop.org/patch/msgid/20170904104838.23822-7-maarten.lankhorst@linux.intel.com
[mlankhorst: Amend commit for merge conflicts with drm-intel]

Currently we neatly track the crtc state, but forget to look at
plane/connector state.

When doing a nonblocking modeset, immediately followed by a setprop
before the modeset completes, the setprop will see the modesets new
state as the old state and free it.

This has to be solved by waiting for hw_done on the connector, even
if it's not assigned to a crtc. When a connector is unbound we take
the last crtc commit, and when it stays unbound we create a new
fake crtc commit for that gets signaled on hw_done for all the
planes/connectors.

We wait for it the same way as we do for crtc's, which will make
sure we never run into a use-after-free situation.

Changes since v1:
- Only create a single disable commit. (danvet)
- Fix leak in intel_legacy_cursor_update.
Changes since v2:
- Make reference counting in drm_atomic_helper_setup_commit
  more obvious. (pinchartl)
- Call cleanup_done for fake commit. (danvet)
- Add comments to drm_atomic_helper_setup_commit. (danvet, pinchartl)
- Add comment to drm_atomic_helper_swap_state. (pinchartl)
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Testcase: kms_atomic_transition.plane-use-after-nonblocking-unbind*
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170904104838.23822-6-maarten.lankhorst@linux.intel.comReviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

When commit synchronization through drm_crtc_commit was first
introduced, we tried to solve the problem of the flip_done
needing a reference count by blocking in cleanup_done.

This has been changed by commit 24835e44 ("drm: reference count
event->completion") which made the waits here no longer needed.

However, even after this commit we still needed the wait because
otherwise we cannot wait for the flip_done because this item might
have been removed from the list.

Changed since v1:
- Make mention of cleanup_done completing before flip_done.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Suggested-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170904104838.23822-4-maarten.lankhorst@linux.intel.com

Most code only cares about the current commit or previous commit.
Fortuantely we already have a place to track those. Move it to
drm_crtc_state where it belongs. :)

The per-crtc commit_list is kept for places where we have to look
deeper than the current or previous commit for checking whether to stall
on unpin. This is used in drm_atomic_helper_setup_commit and
intel_has_pending_fb_unpin.

Changes since v1:
- Update kerneldoc for drm_crtc.commit_list. (danvet)
Changes since v2:
- Remove drm_atomic_helper_async_check hunk. (pinchartl)
Changes since v3:
- Fix use-after-free in drm_atomic_helper_commit_cleanup_done().
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170904150456.31049-1-maarten.lankhorst@linux.intel.com
[mlankhorst: preceeding -> preceding (checkpatch)]

This will allow code to do x->commit = drm_crtc_commit_get(commit),
making it clearer where references are used.
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170904104838.23822-5-maarten.lankhorst@linux.intel.comReviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

The next commit removes the wait for flip_done in in
drm_atomic_helper_commit_cleanup_done, but we need it for the tests
to pass. Instead of using complicated vblank tracking which ends
up being ignored anyway, call the correct atomic helper. :)

Changes since v1:
- Always call drm_atomic_helper_wait_for_flip_done,
  even for legacy cursor updates. (danvet)
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170904104838.23822-2-maarten.lankhorst@linux.intel.comReviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

gcc-7 complains about multiplying within a condition being
suspicious:

drivers/gpu/drm/stm/dw_mipi_dsi-stm.c: In function 'dsi_pll_get_clkout_khz':
drivers/gpu/drm/stm/dw_mipi_dsi-stm.c:117:10: error: '*' in boolean context, suggest '&&' instead [-Werror=int-in-bool-context]

The code here is correct, but can be easily rephrased to make
that more obvious. I also swap out the error handling and the normal
code path for clarity.

Fixes: b0f09a3c69d9 ("drm/stm: Add STM32 DSI controller driver")
Acked-by: NPhilippe Cornu <philippe.cornu@st.com>
Tested-by: NPhilippe Cornu <philippe.cornu@st.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170906131331.2691300-1-arnd@arndb.de

This adds support for Rockchip soc lvds found on rk3288
Based on the patches from Mark yao and Heiko Stuebner.
Signed-off-by: NMark Yao <mark.yao@rock-chips.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NSandy Huang <hjc@rock-chips.com>
Reviewed-by: NMark Yao <mark.yao@rock-chips.com>
Tested-by: NWadim Egorov <w.egorov@phytec.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1504351737-136042-1-git-send-email-hjc@rock-chips.comSigned-off-by: NMark Yao <mark.yao@rock-chips.com>

This patch add Document for Rockchip Soc RK3288 LVDS,
This based on the patches from Mark yao and Heiko Stuebner.
Signed-off-by: NMark yao <mark.yao@rock-chips.com>
Signed-off-by: NHeiko Stuebner <heiko@sntech.de>
Signed-off-by: NSandy Huang <hjc@rock-chips.com>
Reviewed-by: NMark Yao <mark.yao@rock-chips.com>
Reviewed-by: NRob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1504351729-135932-1-git-send-email-hjc@rock-chips.com

gcc-8 points out a condition that almost certainly doesn't
do what the author had in mind:

drivers/gpu/drm/gma500/mdfld_intel_display.c: In function 'mdfldWaitForPipeEnable':
drivers/gpu/drm/gma500/mdfld_intel_display.c:102:37: error: bitwise comparison always evaluates to false [-Werror=tautological-compare]

This changes it to a simple bit mask operation to check
whether the bit is set.

Fixes: 026abc33 ("gma500: initial medfield merge")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170905074741.435324-1-arnd@arndb.de

The header comment in include/trace/define_trace.h specifies that the
TRACE_INCLUDE_PATH needs to be relative to the define_trace.h header
rather than the trace file including it. Most instances get that wrong
and work around it by adding the $(src) directory to the include path.

While this works, it is preferable to refer to the correct path to the
trace file in the first place and avoid any workaround.
Acked-by: NChristian König <christian.koenig@amd.com>
Acked-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901144954.19620-6-thierry.reding@gmail.com

The header comment in include/trace/define_trace.h specifies that the
TRACE_INCLUDE_PATH needs to be relative to the define_trace.h header
rather than the trace file including it. Most instances get that wrong
and work around it by adding the $(src) directory to the include path.

While this works, it is preferable to refer to the correct path to the
trace file in the first place and avoid any workaround.
Acked-by: NChristian König <christian.koenig@amd.com>
Acked-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901144954.19620-3-thierry.reding@gmail.com

The header comment in include/trace/define_trace.h specifies that the
TRACE_INCLUDE_PATH needs to be relative to the define_trace.h header
rather than the trace file including it. Most instances get that wrong
and work around it by adding the $(src) directory to the include path.

While this works, it is preferable to refer to the correct path to the
trace file in the first place and avoid any workaround.
Acked-by: NChristian König <christian.koenig@amd.com>
Acked-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901144954.19620-1-thierry.reding@gmail.com

Based on patch "Convert drivers to explicit reset API" from Philipp Zabel

Commit a53e35db ("reset: Ensure drivers are explicit when requesting
reset lines") started to transition the reset control request API calls
to explicitly state whether the driver needs exclusive or shared reset
control behavior. Convert all drivers requesting exclusive resets to the
explicit API call so the temporary transition helpers can be removed.

No functional changes.

Cc: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: NPhilippe CORNU <philippe.cornu@st.com>
Acked-by: NPhilipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: NAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: NArchit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1501593788-21036-4-git-send-email-philippe.cornu@st.com

This patch cleans up the Synopsys mipi dsi register list:
- rename registers according to the Synopsys documentation
  (1.30 & 1.31)
- fix typos
- re-order registers for a better coherency
Signed-off-by: NPhilippe CORNU <philippe.cornu@st.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: NAndrzej Hajda <a.hajda@samsung.com>
Signed-off-by: NArchit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1501593788-21036-3-git-send-email-philippe.cornu@st.com

To represent formats 98-102, the supported formats mask must be
0x7c00000000 and not 0x3c00000000.
Signed-off-by: NGabriel Krisman Bertazi <krisman@collabora.co.uk>
Reviewed-by: NBen Widawsky <ben@bwidawsk.net>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170831195215.13302-1-krisman@collabora.co.uk

This replaces the custom connector in the TVE200 with the
panel bridge helper. As long as we're just using panels
and no other bridges, this works just fine.
Reviewed-by: NEric Anholt <eric@anholt.net>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20170902200711.29298-1-linus.walleij@linaro.org

drm_fb_helper_resume_worker() uses fb_helper->fbdev to call
fb_set_suspend() which dereferences the pointer.
Move sync-canceling of the resume worker in drm_fb_helper_fini() before
setting fb_helper->fbdev to NULL. Move dirty_work as well.
Signed-off-by: NNoralf Trønnes <noralf@tronnes.org>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1503940668-25883-2-git-send-email-noralf@tronnes.org

drm_fb_cma_create() is just a wrapper around drm_gem_fb_create() now,
so use the function directly.

Cc: Yannick Fertre <yannick.fertre@st.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Signed-off-by: NNoralf Trønnes <noralf@tronnes.org>
Acked-by: NPhilippe Cornu <philippe.cornu@st.com>
Tested-by: NPhilippe Cornu <philippe.cornu@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502631125-13557-18-git-send-email-noralf@tronnes.org

drm_fb_cma_create() is just a wrapper around drm_gem_fb_create() now,
so use the function directly.

Cc: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: NNoralf Trønnes <noralf@tronnes.org>
Acked-by: NAlexey Brodkin <abrodkin@synopsys.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502631125-13557-5-git-send-email-noralf@tronnes.org

This driver can use the drm_driver.dumb_destroy and
drm_driver.dumb_map_offset defaults, so no need to set them.

Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: NNoralf Trønnes <noralf@tronnes.org>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1502986891-36764-3-git-send-email-noralf@tronnes.org

Reject mapping an imported dma-buf since is's an invalid use-case.

Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NNoralf Trønnes <noralf@tronnes.org>
Acked-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: NEric Anholt <eric@anholt.net>
Acked-by: NThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502986891-36764-2-git-send-email-noralf@tronnes.org

The file uses inconsistent capitalization for TMDS. Since it is an
abbreviation, all uppercase is correct.
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901144430.19164-3-thierry.reding@gmail.com

The error messages generated by the SCDC helpers are somewhat
inconsistent with other DRM errors and even with other errors in the
same file. Fix them all up to use a common format.
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901144430.19164-2-thierry.reding@gmail.com

It's unusual to separate kerneldoc comments from the functions that they
describe by a blank line. Remove them.
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901144430.19164-1-thierry.reding@gmail.com

The for_each_crtc_in_state() is used to iterate over CRTCs rather than
connectors.
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901144042.6023-2-thierry.reding@gmail.com

The callback is named .atomic_check, not .atomc_check.
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901144042.6023-1-thierry.reding@gmail.com

kfree on NULL pointer is a no-op and therefore checking is redundant.
Signed-off-by: NHimanshu Jha <himanshujha199640@gmail.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1504099556-3887-1-git-send-email-himanshujha199640@gmail.com

This Fixes build on branches where we already have format-modifier.

Reference: https://lists.freedesktop.org/archives/dri-devel/2017-August/151044.html
Fixes: 179c02fe ("drm/tve200: Add new driver for TVE200")
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Janet Morgan <janet.morgan@intel.com>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Daniel Stone <daniels@collabora.com> (v2)
Cc: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: Daniel Stone <daniels@collabora.com>
Signed-off-by: NRodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170825201612.23056-1-rodrigo.vivi@intel.com

drm_fb_cma_create() is just a wrapper around drm_gem_fb_create() now,
so use the function directly.

Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: NNoralf Trønnes <noralf@tronnes.org>
Acked-by: NShawn Guo <shawnguo@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1502631125-13557-22-git-send-email-noralf@tronnes.org

drm_fb_cma_create() is just a wrapper around drm_gem_fb_create() now,
so use the function directly.

Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Vincent Abriou <vincent.abriou@st.com>
Signed-off-by: NNoralf Trønnes <noralf@tronnes.org>
Acked-by: NVincent Abriou <vincent.abriou@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502631125-13557-17-git-send-email-noralf@tronnes.org

drm_fb_cma_create() is just a wrapper around drm_gem_fb_create() now,
so use the function directly.

Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: NNoralf Trønnes <noralf@tronnes.org>
Acked-by: NBoris Brezillon <boris.brezillon@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502631125-13557-8-git-send-email-noralf@tronnes.org

drm_fb_cma_create() is just a wrapper around drm_gem_fb_create() now,
so use the function directly.

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: NNoralf Trønnes <noralf@tronnes.org>
Acked-by: NLiviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502631125-13557-7-git-send-email-noralf@tronnes.org

drm_fb_cma_create() is just a wrapper around drm_gem_fb_create() now,
so use the function directly.

Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Brian Starkey <brian.starkey@arm.com>
Signed-off-by: NNoralf Trønnes <noralf@tronnes.org>
Acked-by: NLiviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1502631125-13557-6-git-send-email-noralf@tronnes.org