Apparently writing the DPLL register P1/P2 divider fields won't trigger
an actual change in the DPLL output unless VGA mode is enabled for
prior to the register write that changes the P1/P2 dividers. The write
with the new P1/P2 divider can itself disable VGA mode again without
problems.
I tested the behaviour on my 946GZ, and when manually frobbing the
register with the display on, the behaviour is very clear. However I
can't explain why this machine actually works. The P1/P2 divider
changes caused by normal modesets do seem to make it through to the
hardware somehow since I get a stable picture on the monitor with
any resolution. Maybe it's the "three times for luck" stuff that
somehow masks the problem, or something.
But apparently there are machines (eg. Nick Bowler's G45) where that
isn't the case and we fail to get the correct clock from the DPLL.
Things used to work because we enabled VGA mode for disabled DPLLs,
so when re-enabling the DPLL VGA mode was enabled just prior to the
first register write, and hence the P1/P2 change went through without
a hitch. That got changed in
b8afb9113c drm/i915: Keep GMCH DPLL VGA mode always disabled
in the name of consistency. In order to keep the consistency part,
leave VGA mode disabled for disabled DPLLs, but turn it on just prior
to updating the P1/P2 dividers to make sure the hardware picks up
on the new values.
Cc: Nick Bowler <nbowler@draconx.ca>
Reported-by: Nick Bowler <nbowler@draconx.ca>
Tested-by: Nick Bowler <nbowler@draconx.ca>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
We accidentally lost the initial DPLL register write in
1c4e027461 drm/i915: Fix DVO 2x clock enable on 830M
The "three times for luck" hack probably saved us from a total
disaster. But anyway, bring the initial write back so that the
code actually makes some sense.
Reported-and-tested-by: Nick Bowler <nbowler@draconx.ca>
References: http://mid.gmane.org/CAN_QmVyMaArxYgEcVVsGvsMo7-6ohZr8HmF5VhkkL4i9KOmrhw@mail.gmail.com
Cc: stable@vger.kernel.org
Cc: Nick Bowler <nbowler@draconx.ca>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
In order to flush the results from in-batch pipecontrol writes (used for
example in glQuery) before declaring the batch complete (and so declaring
the query results coherent), we need to set the FlushEnable bit in our
flushing pipecontrol. The FlushEnable bit "waits until all previous
writes of immediate data from post-sync circles are complete before
executing the next command".
I get GPU hangs on byt without flushing these writes (running ue4).
piglit has examples where the flush is required for correct rendering.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
I've botched this in
commit eb0b44adc0
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed Mar 18 14:47:59 2015 +0100
drm/i915: kerneldoc for i915_gem_shrinker.c
so let's fix it.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
In order to cache the EDID properly for tiled displays, we
need to retrieve it before we register the connector with
userspace, otherwise userspace can call get resources
and try and get the edid before we've even cached it.
This fixes some problems when hotplugging mst monitors,
with X/mutter running. As mutter seems to get 0 modes
for one of the monitors in the tile.
v2: fix warning in radeon
handle tile setting in cached path rather than
get edid path.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Update the state before sending the msg to close it.
v2: reset value if return indicates we haven't send the msg.
v3: just clean the code up.
Pointed out by Adam J Richter on
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91481
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
output ports should always have a connector, unless
in the rare case connector allocation fails in the
driver.
In this case we only need to teardown the pdt,
and free the struct, and there is no need to
send a hotplug msg.
In the case were we add the port to the destroy
list we need to send a hotplug if we destroy
any connectors, so userspace knows to reprobe
stuff.
this patch also handles port->connector allocation
failing which should be a rare event, but makes
the code consistent.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
This is unnecessary and it makes it easier to see what is needed
from port.
also add blank line to make things nicer.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
It was just a wrapper around drm_fb_helper_set_par that
called cursor_set2 in addition. Now that the core handles
this, drop this radeon specific version.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
If a driver uses the cursor_set2 crtc callback rather than
cursor_set, use that. This fixes the fbdev helper for drivers
that use cursor_set2.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
a few i915 fixes for v4.3.
* tag 'drm-intel-fixes-2015-10-01' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Call non-locking version of drm_kms_helper_poll_enable(), v2
drm: Add a non-locking version of drm_kms_helper_poll_enable(), v2
drm/i915: Consider HW CSB write pointer before resetting the sw read pointer
drm/i915/skl: Don't call intel_prepare_ddi when encoder list isn't yet initialized.
A single commit to fix a command submission hang regression.
Pull request of 2015-10-01
* tag 'vmwgfx-fixes-4.3-151001' of git://people.freedesktop.org/~thomash/linux:
drm/vmwgfx: Fix a command submission hang regression
This pull request includes regression fixups, build warnings, and
trivial cleanups which mostly remove some codes not used anymore.
* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm/exynos: Staticize local function in exynos_drm_gem.c
drm/exynos: fimd: actually disable dp clock
drm/exynos: dp: remove suspend/resume functions
drm/exynos: remove unused mode_fixup() code
drm/exynos: remove decon_mode_fixup()
drm/exynos: remove fimd_mode_fixup()
drm/exynos: rotator: Clock control is unused if !PM
drm/exynos: fimc: Clock control is unused if !PM
drm/exynos: Suspend/resume is unused if !PM
drm/exynos: create a fake mmap offset with gem creation
drm/exynos: remove call to drm_gem_free_mmap_offset()
drm/exynos: Remove useless EXPORT_SYMBOL_GPLs
drm/exynos: cleanup line feed in exynos_drm_gem_get_ioctl
drm/exynos: cleanup function calling written twice
drm/exynos: staticize exynos_drm_gem_init()
drm/exynos: remove unnecessary NULL assignment
drm/exynos: fix missed calling of drm_prime_gem_destroy()
drm/exynos: fix layering violation of address
radeon and amdgpu fixes for 4.3.
- backlight s/r fixes
- typo fix from Dan
- vm debugging fix
- remove import_gpu_mem after discussion with Daniel
* 'drm-fixes-4.3' of git://people.freedesktop.org/~agd5f/linux:
drm/amdgpu: only print meaningful VM faults
drm/amdgpu/cgs: remove import_gpu_mem
drm/amdgpu: Restore LCD backlight level on resume
drm/radeon: Restore LCD backlight level on resume (>= R5xx)
drm/amdgpu: signedness bug in amdgpu_cs_parser_init()
The exynos_drm_gem_mmap_buffer() is not used outside so make it static.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
fimd_dp_clock_enable() was setting the always to enabled,
this patch fix this to actually use the value that is set to 'val'.
Reported-by: Emilio López <emilio.lopez@collabora.co.uk>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This patch removes unnecessary pm suspend/resume functions.
All kms sub drivers will be controlled by top of Exynos drm driver
and connector dpms so these sub drivers shouldn't have their own
pm interfaces.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Reviewed-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
When disabling/enabling a crtc the primary area must be updated
independently of which crtc has been disabled/enabled.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1264735
Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
It was added for completeness, but we don't have any users
for it yet. Daniel noted that it may be racy. Remove it.
Change-Id: I5f5546f8911a4f294008a62dc86a73f3face38d1
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drm_kms_helper_poll_enable() is called from a context in
intel_hpd_irq_storm_disable() where the the mode_config mutex is
already locked.
When this function was converted to lock this mutex in
commit 8c4ccc4ab6 ("drm/probe-helper: Grab mode_config.mutex
in poll_init/enable") a deadlock occurred.
Call the newly implemented non-locking version of this function.
Changes since v1:
- use function name suffix '_locked' for the function that
is to be called from a locked context.
Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
drm_kms_helper_poll_enable() was converted to lock the mode_config
mutex in commit 8c4ccc4ab6
("drm/probe-helper: Grab mode_config.mutex in poll_init/enable").
This disregarded the cases where this function is called from a context
where this mutex is already locked.
Add a non-locking version as well.
Changes since v1:
- use function name suffix '_locked' for the function that
is to be called from a locked context.
Signed-off-by: Egbert Eich <eich@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
When we're out of command buffer space, we turn on the command buffer
processed irq without re-checking for finished command buffers afterwards.
This might lead to a missed irq and the command submission process waiting
forever for space.
Fix this by rerunning the command buffer submission handler whenever we're
out of command space. This ensures both that we don't needlessly turn on
the irq, and that if we decide to turn on the irq, we recheck for finished
command buffers before going to sleep.
Reported-and-tested-by: Bryan Li <ldexin@vmware.com>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
The only thing mode_fixup was doing was set the adjusted_mode->vrefresh to
60, but it already has the value of 60 when the decon_mode_fixup() is
called. That means this call is actually pointless and can be removed.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
The only thing mode_fixup was doing was set the adjusted_mode->vrefresh to
60, but it already has the value of 60 when the fimd_mode_fixup() is
called. That means this call is actually pointless and can be removed.
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Protect the rotator_clk_crtl() function with an #ifdef CONFIG_PM guard
to avoid "defined but not used" warnings.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Protect the fimc_clk_ctrl() function with an #ifdef CONFIG_PM guard to
avoid "defined but not used" warnings.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Protect the suspend and resume callbacks with an #ifdef CONFIG_PM_SLEEP
guard to avoid "defined but not used" warnings.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Don't create a fake mmap offset in exynos_drm_gem_dumb_map_offset. If
not, it will call drm_gem_create_mmap_offset whenever user requests
DRM_IOCTL_MODE_MAP_DUMB ioctl.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
The drm_gem_object_release() function already performs this cleanup,
so there is no reason to do it explicitly.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
All the user of these functions are inside exynos-drm driver and
you don't need to export the symbols for that case.
Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
The beginning of statement in function is next line of a brace.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
By if statment, some function callings are written twice. It needs
several line feed by indentation in if statment. Make to one function
calling from outside if statment.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
The exynos_drm_gem_init() is used only in exynos_drm_gem.c file. Make it
static and don't export it.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
They will be freed right or was freed already, so NULL assignment is
unnecessary.
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
When obj->import_attach is existed, code calling drm_prime_gem_destroy()
was removed from commit 67e93c808b ("drm/exynos: stop copying sg
table"), and it's a fault.
The drm_prime_gem_destroy() is cleanup function which GEM drivers need
to call when they use drm_gem_prime_import() to import dma-bufs, so
exynos-drm driver using drm_gem_prime_import() needs calling
drm_prime_gem_destroy().
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
There is no guarantee that DMA addresses are the same as physical
addresses, but dma_to_pfn() knows how to convert a dma_addr_t to a PFN
which can then be converted to a struct page.
Suggested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Instead of only enabling the backlight (which seems to set it to max
brightness), just re-set the current backlight level, which also takes
care of enabling the backlight if necessary.
Port of radeon commit:
drm/radeon: Restore LCD backlight level on resume (>= R5xx)
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Instead of only enabling the backlight (which seems to set it to max
brightness), just re-set the current backlight level, which also takes
care of enabling the backlight if necessary.
Only the radeon_atom_encoder_dpms_dig part tested on a Kaveri laptop,
the radeon_atom_encoder_dpms_avivo part is only compile tested.
Cc: stable@vger.kernel.org
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The "i" variable should be signed or it leads to a crash in the error
handling code.
Fixes: 1d263474c4 ('drm/amdgpu: unwind properly in amdgpu_cs_parser_init()')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
A previous commit resets the Context Status Buffer (CSB) read pointer in
ring init
commit c0a03a2e4c ("drm/i915: Reset CSB read pointer in ring init")
This is generally correct, but this pointer is not reset after
suspend/resume in some platforms (cht). In this case, the driver should
read the register value instead of resetting the sw read counter to 0.
Otherwise we process old events, leading to unwanted pre-emptions or
something worse.
But in other platforms (bdw) and also during GPU reset or power up, the
CSBWP is reset to 0x7 (an invalid number), and in this case the read
pointer should be set to 5 (the interrupt code will increment this
counter one more time, and will start reading from CSB[0]).
v2: When the CSB registers are reset, the read pointer needs to be set
to 5, otherwise the first write (CSB[0]) won't be read (Mika).
Replace magic numbers with GEN8_CSB_ENTRIES (6) and GEN8_CSB_PTR_MASK
(0x07).
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: stable@vger.kernel.org # v4.0+
Signed-off-by: Lei Shen <lei.shen@intel.com>
Signed-off-by: Deepak S <deepak.s@intel.com>
Signed-off-by: Michel Thierry <michel.thierry@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
a few drm/i915 fixes, including a fix to the recent regression
reported by Sedat Dilek
* tag 'drm-intel-fixes-2015-09-24' of git://anongit.freedesktop.org/drm-intel:
drm/i915/bios: handle MIPI Sequence Block v3+ gracefully
drm/i915: Add primary plane to mask if it's visible
drm/i915: workaround bad DSL readout v3
drm/i915: fix kernel-doc warnings in intel_audio.c
Pull request of 2015-09-24
Vmwgfx fixes for 4.3:
- A couple of uninitialized variable fixes by Christian Engelmayer
- A TTM fix for a bug that causes problems with the new vmwgfx device init
- A vmwgfx refcounting fix
- A vmwgfx iomem caching fix
- A DRM change to allow also control clients to read the drm driver version.
* tag 'vmwgfx-fixes-4.3-150924' of git://people.freedesktop.org/~thomash/linux:
drm: Allow also control clients to check the drm version
drm/vmwgfx: Fix uninitialized return in vmw_kms_helper_dirty()
drm/vmwgfx: Fix uninitialized return in vmw_cotable_unbind()
drm/vmwgfx: Only build on X86
drm/ttm: Fix memory space allocation v2
drm/vmwgfx: Map the fifo as cached
drm/vmwgfx: Fix up user_dmabuf refcounting
This should be harmless.
Vmware will, due to old infrastructure reasons, be using a privileged
control client to supply GUI layout information rather than obtaining
it from the device. That control client will be needing access to DRM
version information.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Acked-by: David Herrmann <dh.herrmann@gmail.com>
Function vmw_kms_helper_dirty() uses the uninitialized variable ret as
return value. Make the result deterministic and directly return as the
variable is unused anyway. Detected by Coverity CID 1324255.
Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Function vmw_cotable_unbind() uses the uninitialized variable ret as
return value. Make the result deterministic and directly return as
the variable is unused anyway. Detected by Coverity CID 1324256.
Signed-off-by: Christian Engelmayer <cengelma@gmx.at>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
