An unlocked version of the drm_fb_helper_add_one_connector() function
will be added in a subsequent patch. Reshuffle the code separately to
make the diff more readable later on.
Tested-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170329144401.1804-3-thierry.reding@gmail.com
Fix up a couple of checkpatch warnings, such as whitespace or coding
style issues.
Tested-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170329144401.1804-2-thierry.reding@gmail.com
On MacBook Pros introduced 2011 and onward, external DP ports are
combined DP/Thunderbolt ports that are no longer fully switchable
between GPUs, they can only be driven by the discrete GPU.
More specifically, the Main Link pins (which transport the actual video
and audio streams) are soldered to the discrete GPU, whereas the AUX
Channel pins are switchable. Because the integrated GPU is missing the
Main Link, external displays appear to it as phantoms which fail to
link-train.
Force the AUX channel to the discrete GPU on these models to avoid any
confusion. Document the switching policy implemented by this commit.
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: http://patchwork.freedesktop.org/patch/msgid/4d1fcc92d1960049e2cff997fbd2d74e45e84e49.1489145162.git.lukas@wunner.de
An external Thunderbolt GPU can neither drive the laptop's panel nor be
powered off by the platform, so there's no point in registering it with
vga_switcheroo. In fact, when the external GPU is runtime suspended,
vga_switcheroo will cut power to the internal discrete GPU, resulting in
a lockup.
Cc: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: http://patchwork.freedesktop.org/patch/msgid/8e733152b13e7c14501ad5af45c1c5c736584111.1489145162.git.lukas@wunner.de
An external Thunderbolt GPU can neither drive the laptop's panel nor be
powered off by the platform, so there's no point in registering it with
vga_switcheroo. In fact, when the external GPU is runtime suspended,
vga_switcheroo will cut power to the internal discrete GPU, resulting in
a lockup. Moreover AMD's Windows driver special-cases Thunderbolt as
well.
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: http://patchwork.freedesktop.org/patch/msgid/701a8e89ce8ac39734736ab779558b6a4042a19e.1489145162.git.lukas@wunner.de
An external Thunderbolt GPU can neither drive the laptop's panel nor be
powered off by the platform, so there's no point in registering it with
vga_switcheroo. In fact, when the external GPU is runtime suspended,
vga_switcheroo will cut power to the internal discrete GPU, resulting in
a lockup. Moreover AMD's Windows driver special-cases Thunderbolt as
well.
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: http://patchwork.freedesktop.org/patch/msgid/72d8a9645aece3eff44e116303f0fec8be061c88.1489145162.git.lukas@wunner.de
Detect on probe whether a PCI device is part of a Thunderbolt controller.
Intel uses a Vendor-Specific Extended Capability (VSEC) with ID 0x1234
on such devices. Detect presence of this VSEC and cache it in a newly
added is_thunderbolt bit in struct pci_dev.
Also, add a helper to check whether a given PCI device is situated on a
Thunderbolt daisy chain (i.e., below a PCI device with is_thunderbolt
set).
The necessity arises from the following:
* If an external Thunderbolt GPU is connected to a dual GPU laptop,
that GPU is currently registered with vga_switcheroo even though it
can neither drive the laptop's panel nor be powered off by the
platform. To vga_switcheroo it will appear as if two discrete
GPUs are present. As a result, when the external GPU is runtime
suspended, vga_switcheroo will cut power to the internal discrete GPU
which may not be runtime suspended at all at this moment. The
solution is to not register external GPUs with vga_switcheroo, which
necessitates a way to recognize if they're on a Thunderbolt daisy
chain.
* Dual GPU MacBook Pros introduced 2011+ can no longer switch external
DisplayPort ports between GPUs. (They're no longer just used for DP
but have become combined DP/Thunderbolt ports.) The driver to switch
the ports, drivers/platform/x86/apple-gmux.c, needs to detect presence
of a Thunderbolt controller and, if found, keep external ports
permanently switched to the discrete GPU.
v2: Make kerneldoc for pci_is_thunderbolt_attached() more precise,
drop portion of commit message pertaining to separate series.
(Bjorn Helgaas)
Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Tomas Winkler <tomas.winkler@intel.com>
Cc: Amir Levy <amir.jer.levy@intel.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: http://patchwork.freedesktop.org/patch/msgid/0ab165a4a35c0b60f29d4c306c653ead14fcd8f9.1489145162.git.lukas@wunner.de
I've been contributing to vga_switcheroo for the past two years and by
now am fairly familiar with it, so danvet suggested that I add myself
as reviewer.
While at it, add missing file pattern for vga_switcheroo.h + vgaarb.h
to the DRM and DRM-MISC sections such that get_maintainer.pl returns
dri-devel@ and the drm-misc maintainers.
Suggested-and-acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Link: http://patchwork.freedesktop.org/patch/msgid/ff2320a0790d039e714cf352cf32ec16fa370627.1490623913.git.lukas@wunner.de
We want to lock the primary plane, not the cursor (which might be
optional). Real bad case of copy-paste fail, unfortunately our CI
didn't catch that because i915 does have a cursor plane.
Reported-by: Eric Anholt <eric@anholt.net>
Fixes: 29dc0d1de1 ("drm: Roll out acquire context for the page_flip ioctl")
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170330204831.8225-1-daniel.vetter@ffwll.ch
Tested-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Like the atomic update hook it's wrapping, the plane_state is the old
one, and the new one is in plane->state. Both msxfb and tinydrm use
it correctly, but I mistook it for the new state in pl111 due to its
naming.
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170320233615.5242-3-eric@anholt.net
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
With the explicit retry loop static analyzers get confused by the
control flow and believe that e could be accessed after kfree. That's
not possible, but it's non-obvious, so let's clear it to NULL.
We already cleared e = NULL at the top of the function, so this is all
in line.
Cc: Julia Lawall <julia.lawall@lip6.fr>
Reported-by: Julia Lawall <julia.lawall@lip6.fr>
Fixes: 29dc0d1de1 ("drm: Roll out acquire context for the page_flip ioctl")
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170330133253.29500-1-daniel.vetter@ffwll.ch
ARM v6 (at least) only allows cmpxchg on 32bit variables which doesn't
always include the bool type.
drivers/built-in.o: In function `vblank_disable_and_save':
imx-ocotp.c:(.text+0xb45e8): undefined reference to `__bad_cmpxchg'
Makefile:986: recipe for target 'vmlinux' failed
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Reported-by: Leonard Crestez <leonard.crestez@nxp.com>
Fixes: 43dc7fe2b2 ("drm: Mark up accesses of vblank->enabled outside of its spinlock")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170330140832.32377-1-chris@chris-wilson.co.uk
On some boards the hpd pin of a hdmi connector is wired up to a gpio
pin. Since in the DRM world the tfp410 driver is responsible for
handling the connector, add support for hpd gpios in this very driver.
Reviewed-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Christopher Spinrath <christopher.spinrath@rwth-aachen.de>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: http://patchwork.freedesktop.org/patch/msgid/2e47786ab3d04078ae70d0c4064f7c4d@rwthex-s1-b.rwth-ad.de
The size of .word is the size of a word in the given platform, which
for intel systems is 16-bits but other architectures use different
sizes. However, .hword emits 16-bit numbers regardless of the
platform (and despite the name). The quantities specified in EDID are
platform independent, so they should work in spite of the default
target of the cc you are using, so use .hword where EDID specifies
16-bit numbers.
Cc: Carsten Emde <C.Emde@osadl.org>
Cc: David Airlie <airlied@linux.ie>
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Javi Merino <javi.merino@kernel.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1490795123-16851-1-git-send-email-javi.merino@kernel.org
v2 of the commit 2c77bb29d3 ("drm: simplify the locking in the GETCRTC ioctl")
accidentally introduced a unrelated change in intel_display.c, revert the
unrelated change.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Fixes: 2c77bb29d3 ("drm: simplify the locking in the GETCRTC ioctl")
Reported-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/6be47261-475f-c190-af56-c136677246d9@linux.intel.com
I've screwed this up when removing the legacy backoff hack.
Fixes: 38b6441e4e ("drm/atomic-helper: Remove the backoff hack from set_config")
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170329174136.10330-1-daniel.vetter@ffwll.ch
Bypass all the spinlocks and return the last timestamp and counter from
the last vblank if the driver delcares that it is accurate (and stable
across on/off), and the vblank is currently enabled.
This is dependent upon the both the hardware and driver to provide the
proper barriers to facilitate reading our bookkeeping outside of the
vblank interrupt and outside of the explicit vblank locks.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Michel Dänzer <michel@daenzer.net>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Dave Airlie <airlied@redhat.com>,
Cc: Mario Kleiner <mario.kleiner.de@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170317202030.24410-4-chris@chris-wilson.co.uk
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Move the repeated (a - b) <= (1 << 23) to its own function.
v2: Catch the '1<<23' inside drm_handle_vblank() as well
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Michel Dänzer <michel@daenzer.net>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322100650.26082-1-chris@chris-wilson.co.uk
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Since we cannot enable the vblank if !dev->irq_enabled, we assert that
checking for both !vblank->enabled and !dev->irq_enabled is tautological
and only need the former. The only time it may differ is when racing
with drm_irq_uninstall(), but that will then disable the vblank and
wakeup the waiters.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170317202030.24410-2-chris@chris-wilson.co.uk
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Order the update to vblank->enabled after the timestamp is primed so
that a concurrent unlocked reader will only see the vblank->enabled with
the current timestamp.
v2: vblank->enable is guarded by dev->vbl_lock not
dev->vblank_time_lock, update the READ_ONCE accordingly.
Do not add a READ_ONCE(vblank->enabled) inside the interrupt handler to
avoid missing an interrupt whilst racing with enable_vblank()
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170317202030.24410-1-chris@chris-wilson.co.uk
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
We want to provide the vblank irq shadow for pageflip events as well as
vblank queries. Such events are completed within the vblank interrupt
handler, and so the current check for disabling the irq will disable it
from with the same interrupt as the last pageflip event. If we move the
decision on whether to disable the irq (based on there no being no
remaining vblank events, i.e. vblank->refcount == 0) to before we signal
the events, we will only disable the irq on the interrupt after the last
event was signaled. In the normal course of events, this will keep the
vblank irq enabled for the entire flip sequence whereas before it would
flip-flop around every interrupt.
v2: Move the disable_fn() call outside of the vblank_event_lock.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Michel Dänzer <michel@daenzer.net>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Dave Airlie <airlied@redhat.com>,
Cc: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> #v1
Reviewed-by: Mario Kleiner <mario.kleiner.de@gmail.com> #v1
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170324173058.23051-1-chris@chris-wilson.co.uk
Another one bites the dust.
Again let's not forget to remove the temporary hidden acquire_ctx
assignment, now that we pass this all around explicitly it can go
away again.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-20-daniel.vetter@ffwll.ch
Surprisingly a lot of legacy drivers roll their own, for
runtime pm and because vmwgfx.
Also make nouveau's set_config static while at it.
Cc: Sinclair Yeh <syeh@vmware.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-19-daniel.vetter@ffwll.ch
Just the groundwork to have something to feed into ->set_config.
Again we need a temporary hack to still fill out the legacy
ctx in mode_config.acquire_ctx.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-18-daniel.vetter@ffwll.ch
This is another case where we really can't reconstruct a acquire ctx
in any useful fashion because all the callers are legacy drivers. So
like drm_plane_force_disable simply restrict it to non-atomic drivers
so that it's clear we're ok with passing a NULL ctx.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-17-daniel.vetter@ffwll.ch
No need to grab both plane and crtc locks at the same time, we can do
them one after the other. If userspace races it'll get what it
deserves either way.
This removes another user of drm_modeset_lock_crtc. There's only one
left.
v2: Make sure all access to primary->state is properly protected
(Harry).
Cc: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170328070145.21520-1-daniel.vetter@ffwll.ch
Again just going through the motions, no functional changes in here.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>t
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-12-daniel.vetter@ffwll.ch
Nouveau had a few direct calls to ->disable_plane, I replaced those
with drm_plane_force_disable. Same story for shmob.
Otherwise no code changes.
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-5-daniel.vetter@ffwll.ch
Just rolling it out, no code change here.
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Eric Anholt <eric@anholt.net>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-3-daniel.vetter@ffwll.ch
This is just prep work to get an acquire ctx into every place where we
call ->update_plane or ->disable_plane.
v2: Keep the hidden acquire_ctx pointers valid while transitioning.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-2-daniel.vetter@ffwll.ch
Mostly because I want the links from the newly-added @state functions
to work. But I think explaining when they're useful and that the
implicit one is deprecated is good either way. Slightly repetitive
unfortunately.
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170328155349.5972-3-daniel.vetter@ffwll.ch
The rules are getting real hard, better to dump my brain into text a
bit. This is by far not complete, but I think I reasonable start at
least.
Some of the older kms structures would need a full doc review anyway
...
Cc: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170328155349.5972-2-daniel.vetter@ffwll.ch
They're properly documented in drm_connector.c now, and this
csv file is a horrible mess. Better to remove it.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170328155349.5972-1-daniel.vetter@ffwll.ch
This patch adds description about 'scdc' variable in drm_hdmi_info
structure, to fix this warning during doc-build.
"drm_connector.h:140: warning: No description found for parameter 'scdc'"
V2: Rebase
V3: Added extra *
V4: Removed merged conflict
V5: Removed extra line at start of structure (Daniel)
V6: Make description single line (Daniel)
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1490684779-21633-1-git-send-email-shashank.sharma@intel.com
Yes the help text is unhelpful, but atomic drivers should never use
this. Just grab the lock without context or anything.
Also an aside: Checking ->active like this doesn't protect against
nonblocking commits, this is rather bogus.
Cc: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-8-daniel.vetter@ffwll.ch
The trouble here is that it does multiple atomic commits under one
drm_modeset_lock_all, which breaks the behind-the-scenes acquire
context magic that function pulls off. It's much better to have one
overall atomic commit. That we still have multiple atomic commits
prevents us from adding some pretty useful debug checks to the atomic
machinery.
Hence it is really a bad idea to call the legacy
drm_crtc_force_disable_all() function. There's 2 atomic drivers using
this still, nouveau and tinydrm. To fix this, introduce a new
drm_atomic_helper_shutdown() by extracting the code from i915.
While at it improve kernel-doc and catch future offenders by
sprinkling a WARN_ON into the legacy function. We should probably move
those into the legacy modeset helpers, too ...
v2: Make it compile on arm drivers too (Noralf).
v3: Correct kerneldoc to point at _disable_all().
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: Ben Skeggs <bskeggs@redhat.com>
Tested-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170321164149.31531-1-daniel.vetter@ffwll.ch
drm_driver.fops can't be shared since the owner then becomes tinydrm.ko.
Move the fops declaration to the driver.
v2: Use DEFINE_DRM_GEM_CMA_FOPS
Reported-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170326142529.16938-1-noralf@tronnes.org
Currently, the irq handler that monitors changes for HPD and RX_SENSE
relies on the status of the bridge for updating the status of the HPD.
The update is done only when the bridge is enabled.
However, on Rockchip platforms we have found use cases where it could be
a problem. When HDMI is being used, turning off/on the screen or
unplugging/re-plugging the cable, the following simplified code path
will happen:
- dw_hdmi_irq() will be triggered by an HPD event, as the bridge is on
hdmi->disabled is false, then the handler will update the rxsense flag
accordingly.
- dw_hdmi_update_power() will be invoked with the mode
DRM_FORCE_UNSPECIFIED and rxsense == 1, so dw_hdmi_poweroff() will be
called and the PHY will be desactivated (its pixel clocks and TMDS)
[...]
- dw_hdmi_bridge_disable() will be invoked, the bridge will be marked as
disabled.
- dw_hdmi_irq() will be triggered by an HPD event, as the bridge is
currently disabled the HPD status won't be updated, so hdmi->rxsense
won't be changed. Even if the data part of the PHY is disabled, this
information coming from the HDMI Transmitter is correct and should be
saved.
[...]
- dw_hdmi_bridge_enable() will be invoked, the bridge will be marked as
enabled.
- dw_hdmi_update_power() will be called. When hdmi->force is equal to
DRM_FORCE_UNSPECIFIED the function will rely on hdmi->rxsense. If this
field has not been updated by the irq handler, it will be false and
DRM_FORCE_ON won't be put to hdmi->force.
Consequently, most of the time dw_hdmi_poweron() won't be called in this
use case, TMDS won't be re-enabled the PHY won't be re-initialized,
resulting in a "Signal not found".
This commit fixes the issue by removing the check for "!hdmi->disabled".
As already explained, even if the PHY is partially disabled, information
coming from HDMI Transmitter about HPD should be saved for a later use.
Signed-off-by: Romain Perier <romain.perier@collabora.com>
Signed-off-by: Archit Taneja <architt@codeaurora.org>
Link: https://patchwork.freedesktop.org/patch/143602/
Discussed with Noralf on the list a bit.
An open question is tinydrm vs. drm_panel, but until we have a clear
idea what's really needed in that space, I think it's best to just
move forward with what we have.
Cc: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322083617.13361-10-daniel.vetter@ffwll.ch
To match the drm_ioctl.c we already have.
v2: Remove spurious space (Ville).
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Again this is an internal helper, not the official way to lock a crtc.
Cc: Jyri Sarha <jsarha@ti.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170322215058.8671-9-daniel.vetter@ffwll.ch
For the RK3399, the grf_switch_reg name should be RK3399_GRF_SOC_CON20,
not RK3399_GRF_SOC_CON19.
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/1490147691-4489-5-git-send-email-zyw@rock-chips.com
