| Commit message (Collapse) | Author | Age |
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Replace the valleyview_set_rps() and gen6_set_rps() calls with
intel_set_rps() which itself does the IS_VALLEYVIEW() check. The
code becomes simpler since the callers don't have to do this check
themselves.
Most of the change was performe with the following semantic patch:
@@
expression E1, E2, E3;
@@
- if (IS_VALLEYVIEW(E1)) {
- valleyview_set_rps(E2, E3);
- } else {
- gen6_set_rps(E2, E3);
- }
+ intel_set_rps(E2, E3);
Adding intel_set_rps() and making valleyview_set_rps() and gen6_set_rps()
static was done manually. Also valleyview_set_rps() had to be moved a
bit avoid a forward declaration.
v2: Use a less greedy semantic patch
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Suggested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Daniel Vetter spotted a bug while reviewing some of my refactoring in this
are of the code. I'll quote:
"""
> @@ -9764,6 +9768,7 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
> work->event = event;
> work->crtc = crtc;
> work->old_fb_obj = intel_fb_obj(old_fb);
> + work->old_tiling_mode = to_intel_framebuffer(old_fb)->tiling_mode;
Hm, that's actually an interesting bugfix - currently userspace could be
sneaky and destroy the old fb immediately after the flip completes and the
change the tiling of the underlying object before the unpin work had a
chance to run (needs some fudgin with rt prios to starve workers to make
this work though).
Imo the right fix is to hold a reference onto the fb and not the
underlying gem object. With that tiling is guaranteed not to change.
"""
This patch tries to implement the above proposed change.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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There are two sets of helper functions provided by the DRM core that can
implement the .update_plane() and .disable_plane() hooks in terms of a
driver's atomic entrypoints. The transitional helpers (which we have
been using so far) create a plane state and then use the plane's atomic
entrypoints to perform the atomic begin/check/prepare/commit/finish
sequence on that single plane only. The full atomic helpers create a
top-level atomic state (which is capable of holding multiple object
states for planes, crtc's, and/or connectors) and then passes the
top-level atomic state through the full "atomic modeset" pipeline.
Switching from the transitional to full helpers here shouldn't result in
any functional change, but will enable us to exercise/test more of the
internal atomic pipeline with the legacy API's used by existing
applications.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Until all drivers have transitioned to atomic, the framebuffer
associated with a plane is tracked in both plane->fb (for legacy) and
plane->state->fb (for all the new atomic codeflow). All of our modeset
and plane updates use drm_plane->update_plane(), so in theory plane->fb
and plane->state->fb should always stay in sync and point at the same
thing for i915. However we forgot about the pageflip ioctl case, which
currently only updates plane->fb and leaves plane->state->fb at a stale
value.
Surprisingly, this doesn't cause any real problems at the moment since
internally we use the plane->fb pointer in most of the places that
matter, and on the next .update_plane() call, we use plane->fb to figure
out which framebuffer to cleanup. However when we switch to the full
atomic helpers for update_plane()/disable_plane(), those helpers use
plane->state->fb to figure out which framebuffer to cleanup, so not
having updated the plane->state->fb pointer causes things to blow up
following a pageflip ioctl.
The fix here is to just make sure we update plane->state->fb at the same
time we update plane->fb in the pageflip ioctl.
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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git://github.com/bbrezillon/linux-at91 into drm-next
This pull request includes:
- support for Atomic mode setting
- the discard area optimization
- implementation of PM primitives
* 'drm-atmel-hlcdc-devel' of git://github.com/bbrezillon/linux-at91:
drm: atmel-hlcdc: Add pinctrl PM select sleep,default state in CRTC suspend/resume
drm: atmel-hlcdc: Add PM suspend/resume support
drm: atmel-hlcdc: add discard area support
drm: atmel-hlcdc: Atomic mode-setting conversion
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suspend/resume
Some LCD panels have back-powering issue when un-powered, allows users
to use an alternate pinctrl "sleep" in order to clamp outputs to a
wanted state at suspend.
Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
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On suspend: switch off CRTC if not already suspended with runtime PM
On resume: switch on CRTC if we were not already suspended from runtime
PM while suspending.
Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
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The HLCDC IP provides a way to discard a specific area on the primary
plane (in case at least one of the overlay is activated and alpha
blending is disabled).
Doing this will reduce the amount of data to transfer from the main
memory to the Display Controller, and thus alleviate the load on the
memory bus (since this link is quite limited on such hardware,
this kind of optimization is really important).
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Convert the HLCDC driver to atomic mode-setting.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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drm-next
rcar-du atomic modesetting support
* 'drm/next/atomic' of git://linuxtv.org/pinchartl/fbdev: (32 commits)
drm: rcar-du: Fix race condition in hardware plane allocator
drm: rcar-du: Move group locking inside rcar_du_crtc_update_planes()
drm: rcar-du: Move plane commit code from CRTC start to CRTC resume
drm: rcar-du: Move plane format to plane state
drm: rcar-du: Remove unneeded rcar_du_crtc plane field
drm: rcar-du: Replace plane crtc and enabled fields by plane state
drm: rcar-du: Rework plane setup code
drm: rcar-du: Switch plane set_property to atomic helpers
drm: rcar-du: Switch page flip to atomic helpers
drm: rcar-du: Implement asynchronous commit support
drm: rcar-du: Replace encoder mode_fixup with atomic_check
drm: rcar-du: Switch connector DPMS to atomic helpers
drm: rcar-du: Switch mode config to atomic helpers
drm: rcar-du: Switch plane update to atomic helpers
drm: rcar-du: Rework CRTC enable/disable for atomic updates
drm: rcar-du: Rework HDMI encoder enable/disable for atomic updates
drm: rcar-du: Rework encoder enable/disable for atomic updates
drm: rcar-du: Replace LVDS encoder DPMS by enable/disable
drm: rcar-du: Remove private copy of plane size and position
drm: rcar-du: Wire up atomic state object scaffolding
...
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The plane allocator has been inherently racy since the beginning of the
transition to atomic updates, as the allocator lock is released between
free plane check (at .atomic_check() time) and the reservation (at
.atomic_update() time).
To fix it, create a new allocator solely based on the atomic plane
states without keeping any external state and perform allocation in the
.atomic_check() handler. The core idea is to replace the free planes
bitmask with a collective knowledge based on the allocated hardware
plane(s) for each KMS plane. The allocator then loops over all plane
states to compute the free planes bitmask, allocates hardware planes
based on that bitmask, and stores the result back in the plane states.
For this to work we need to access the current state of planes not
touched by the atomic update. To ensure that it won't be modified, we
need to lock all planes using drm_atomic_get_plane_state(). This
effectively serializes atomic updates from .atomic_check() up to
completion, either when swapping the states if the check step has
succeeded, or when freeing the states if the check step has failed.
Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Only the planes to CRTCs association control register DPTSR needs to be
protected by custom locking, don't hold the mutex around the whole code.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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As the DRM core will commit plane states when performing atomic updates,
those don't need to be committed manually when the CRTC is started except
in the system resume code path.
However, the atomic plane commit step is currently performed between
mode set disable and mode set enable to mimick the legacy mode setting
operations order. This causes the device clocks to be disabled after
applying plane settings and reenabled when enabling the CRTC,
potentially losing hardware in between.
Reorder the operations to enable the CRTC first and only then apply
plane settings, removing the need to manage clocks in the atomic begin
and flush handlers. We can then move the plane state commit code out of
the CRTC start handler to the system resume handler.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The format stored in the rcar_du_plane structure is part of the plane
state. Move it to the rcar_du_plane_state structure and precompute it in
the .atomic_check() handler.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The rcar_du_crtc plane field is only used to check for an error that
can't occur. Remove it.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The crtc and enabled fields duplicates information stored in the plane
state. Use the plane state instead and remove the fields.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Now that the plane setup code isn't called outside of the plane
implementation, it can be simplified by merging the
rcar_du_plane_compute_base() and rcar_du_plane_update_base() functions.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Allow setting up plane properties atomically using the plane
set_property atomic helper. The properties are now stored in the plane
state (requiring subclassing it) and applied when updating the planes.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The atomic page flip helper implements the page flip operation using
asynchronous commits.
As the legacy page flip was the last CRTC operation that needed direct
access to plane setup, the plane setup functions can now become private
to the plane implementation.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Implement a custom .atomic_commit() handler that supports asynchronous
commits using a work queue. This can be used for userspace-driven
asynchronous commits, as well as for an atomic page flip implementation.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The encoder .mode_fixup() operation is legacy, atomic updates uses the
new .atomic_check() operation. Convert the encoders drivers.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The atomic connector DPMS helper implements the connector DPMS operation
using atomic commit, removing the need for DPMS helper operations on
CRTCs and encoders.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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This removes the legacy mode config code. The CRTC and encoder prepare
and commit operations are not used anymore, remove them.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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This removes the legacy plane update code. Wire up the default atomic
check and atomic commit mode config helpers as needed by the plane
update atomic helpers.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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When using atomic updates the CRTC .enable() and .disable() helper
operations are preferred over the (then legacy) .prepare() and .commit()
operations. Implement .enable() and rework .disable() to not depend on
DPMS, easing DPMS removal later on.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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When using atomic updates the encoder .enable() and .disable() helper
operations are preferred over the (then legacy) .prepare() and .commit()
operations. Implement .enable() and .disable() and rework .prepare(),
.commit() and .dpms() as wrappers around .enable() and .disable(),
easing their future removal.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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When using atomic updates the encoder .enable() and .disable() helper
operations are preferred over the (then legacy) .prepare() and .commit()
operations. Implement .enable() and .disable() and rework .prepare(),
.commit() and .dpms() as wrappers around .enable() and .disable(),
easing their future removal.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The LVDS encoder doesn't support DPMS states, replace the DPMS operation
by enable/disable to avoid propagating DPMS states down to the encoder
code.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The plane source and destination size and positions are stored in the
plane state, and a private copy is kept in the rcar_du_plane objects.
Remove the private copy as it just duplicates the state.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Hook up the default .reset(), .atomic_duplicate_state() and
.atomic_free_state() helpers to ensure that state objects are properly
created and destroyed, and call drm_mode_config_reset() at init time to
create the initial state objects.
Framebuffer reference count also gets maintained automatically by the
transitional helpers except for the legacy page flip operation. Maintain
it explicitly there.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Use the new CRTC atomic transitional helpers drm_helper_crtc_mode_set()
and drm_helper_crtc_mode_set_base() to implement the CRTC .mode_set and
.mode_set_base operations. This delegates primary plane configuration to
the plane .atomic_update and .atomic_disable operations, removing
duplicate code from the CRTC implementation.
There is now no code path available to the driver in which to drop the
reference to the CRTC acquired in the .prepare() operation if an error
then occurs. The driver thus now leaks a reference if an error occurs
during mode set. So be it, this will be fixed in a further step of the
atomic update transition.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Implement the CRTC .atomic_begin() and .atomic_flush() operations, the
plane .atomic_check(), .atomic_update() and operations, and use the
transitional atomic helpers to implement the plane update and disable
operations on top of the new atomic operations.
The plane setup code can't be moved out of the CRTC start function
completely yet, as the atomic code paths are not taken every time the
CRTC needs to be started. This results in some code duplication that
will be fixed after switching to atomic updates completely.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The hardware plane allocator loops over all planes to find free
candidates. However, instead of looping over the number of hardware
planes, it loops over the number of software planes, which happens to be
larger by one unit. This has no effect in practise as the extra plane is
always cleared in the mask of free planes, but it should still be fixed
for correctness.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Explicitly create the CRTC primary plane instead of relying on the core
helpers to do so. This simplifies the plane logic by merging the KMS and
software planes.
Reject plane API operations on the primary planes for now, as that code
will anyway be refactored when implementing support for atomic updates.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Let's avoid magic constants. Beside increasing code readability, it will
also ensure that no location will be forgotten when raising the maximum
number of groups, CRTCs or LVDS encoders
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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fbdev emulation requires at least one connector, and will fail to
initialize if no connector has been successfully instantiated. Disable
it in that case and print an informational message instead of failing
probe with a confusing fbdev emulation error message.
It could be argued that probe should fail when no connector is present,
but the DU could still be useful in that case with the to-be-implemented
memory write-back support.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The DRM core vblank handling mechanism requires drivers to forcefully
turn vblank reporting off when disabling the CRTC, and to restore the
vblank reporting status when enabling the CRTC.
Implement this using the drm_crtc_vblank_on/off helpers. When disabling
vblank we must first wait for page flips to complete, so implement page
flip completion wait as well.
Finally, drm_crtc_vblank_off() must be called at startup to synchronize
the state of the vblank core code with the hardware, which is initially
disabled. This is performed at CRTC creation time, requiring vertical
blanking to be initialized before creating CRTCs.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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Turning a CRTC off will prevent a queued page flip from ever completing,
potentially confusing userspace. Wait for queued page flips to complete
before turning the CRTC off to avoid this.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The next commit will need functions to be reordered to avoid forward
declarations. Do it separately to help review.
This only moves functions without any change to the code.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The drm_connector encoder field points to the encoder driving the
connector. No such association exists at init time, as all pipelines are
disabled. Don't set the field.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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The function is meant to restore the fbdev mode in the lastclose
handler, not to be called at init time. Remove the call.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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All encoders and CRTCs start disabled, re-disabling them is a no-op.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
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git://ftp.arm.linux.org.uk/~rmk/linux-arm into drm-next
A number of TDA998x updates for the next merge window. Patches
included in this set are:
* adding support for finding the attached CRTCs from DT
* a fix function name mis-spelling in a dev_err()
* simplify the EDID reading by using the drm_do_get_edid() function
instead of coding this ourselves.
* 'drm-tda998x-devel' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
drm/i2c: tda998x: use drm_do_get_edid()
drm/i2c: tda998x: fix misspelling of current function in string
drm/i2c: tda998x: add OF support for finding attached CRTCs
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Replace the internal EDID read implementation by a call to the new EDID
read core function.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Tested-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Replace a misspelled function name by %s and then __func__.
This was done using Coccinelle, including the use of Levenshtein distance,
as proposed by Rasmus Villemoes.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Add support to find the attached CRTCs via OF using the newly introduced
helper.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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git://anongit.freedesktop.org/drm-intel into drm-next
misc atomic and dp macros
* tag 'topic/drm-misc-2015-02-25' of git://anongit.freedesktop.org/drm-intel:
drm: Adding edp1.4 specific dpcd macros
drm/atomic-helpers: make mode_set hooks optional
drm/atomic-helper: Rename commmit_post/pre_planes
drm/atomic: Rename drm_atomic_helper_commit_pre_planes() state argument
drm: If available use atomic state in getcrtc ioctl
drm: Add DRM_DEBUG_ATOMIC
drm/atomic-helpers: Fix documentation typos and wrong copy&paste
drm: Fix the CRTC_STEREO_DOUBLE_ONLY define to include stero modes
drm: Fix drm_crtc_vblank_get() documentation
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With runtime PM the hw might still be off while doing the ->mode_set
callbacks - runtime PM get/put should only happen in the
enable/disable hooks to properly support DPMS. Which essentially makes
these callbacks useless for drivers support runtime PM, so make them
optional. Again motivated by discussions with Laurent.
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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These names only make sense because of backwards compatability with
the order used by the crtc helper library. There's not really any real
requirement in the ordering here.
So rename them to something more descriptive and update the kerneldoc
a bit. Motivated in a discussion with Laurent about how to restore
plane state for dpms for drivers with runtime pm.
v2: Squash in fixup from Stephen Rothwell to fix a conflict with
tegra.
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
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The argument contains a pointer to the old state, rename it to old_state
like in all other commit helper functions.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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