Use the DRM panel framework to attach a panel to an output. If the panel
attached to a connector supports supports the backlight brightness
accessors, a property will be available to allow the brightness to be
modified from userspace.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Add a driver for simple panels. Such panels can have a regulator that
provides the supply voltage and a separate GPIO to enable the panel.
Optionally the panels can have a backlight associated with them so it
can be enabled or disabled according to the panel's power management
mode.
Support is added for two panels: An AU Optronics 10.1" WSVGA and a
Chunghwa Picture Tubes 10.1" WXGA panel.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Add a very simple framework to register and lookup panels. Panel drivers
can initialize a DRM panel and register it with the framework, allowing
them to be retrieved and used by display drivers. Currently only support
for DPMS and obtaining panel modes is provided. However it should be
sufficient to enable a large number of panels. The framework should also
be easily extensible to support more sophisticated kinds of panels such
as DSI.
The framework hasn't been tied into the DRM core, even though it should
be easily possible to do so if that's what we want. In the current
implementation, display drivers can simple make use of it to retrieve a
panel, obtain its modes and control its DPMS mode.
Note that this is currently only tested on systems that boot from a
device tree. No glue code has been written yet for systems that use
platform data, but it should be easy to add.
Signed-off-by: Thierry Reding <treding@nvidia.com>
MIPI DSI bus allows to model DSI hosts and DSI peripherals using the
Linux driver model. DSI hosts are registered by the DSI host drivers.
During registration DSI peripherals will be created from the children
of the DSI host's device tree node. Support for registration from
board-setup code will be added later when needed.
DSI hosts expose operations which can be used by DSI peripheral drivers
to access associated devices.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This series converts the Tegra DTs and drivers to use the common/
standard DMA and reset bindings, rather than custom bindings. It also
adds complete documentation for the Tegra clock bindings without
actually changing any binding definitions.
This conversion relies on a few sets of patches in branches from outside
the Tegra tree:
1) A patch to add an DMA channel request API which allows deferred probe
to be implemented.
2) A patch to implement a common part of the of_xlate function for DMA
controllers.
3) Some ASoC patches (which in turn rely on (1) above), which support
deferred probe during DMA channel allocation.
4) The Tegra clock driver changes for 3.14.
Consequently, this branch is based on a merge of all of those external
branches.
In turn, this branch is or will be pulled into a few places that either
rely on features introduced here, or would otherwise conflict with the
patches:
a) Tegra's own for-3.14/powergate and for-4.14/dt branches, to avoid
conflicts.
b) The DRM tree, which introduces new code that relies on the reset
controller framework introduced in this branch, and to avoid
conflicts.
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Merge tag 'tegra-for-3.14-dmas-resets-rework' into drm/for-next
ARM: tegra: implement common DMA and resets DT bindings
This series converts the Tegra DTs and drivers to use the common/
standard DMA and reset bindings, rather than custom bindings. It also
adds complete documentation for the Tegra clock bindings without
actually changing any binding definitions.
This conversion relies on a few sets of patches in branches from outside
the Tegra tree:
1) A patch to add an DMA channel request API which allows deferred probe
to be implemented.
2) A patch to implement a common part of the of_xlate function for DMA
controllers.
3) Some ASoC patches (which in turn rely on (1) above), which support
deferred probe during DMA channel allocation.
4) The Tegra clock driver changes for 3.14.
Consequently, this branch is based on a merge of all of those external
branches.
In turn, this branch is or will be pulled into a few places that either
rely on features introduced here, or would otherwise conflict with the
patches:
a) Tegra's own for-3.14/powergate and for-4.14/dt branches, to avoid
conflicts.
b) The DRM tree, which introduces new code that relies on the reset
controller framework introduced in this branch, and to avoid
conflicts.
Tegra's clock driver now provides an implementation of the common
reset API (include/linux/reset.h). Use this instead of the old Tegra-
specific API; that will soon be removed.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Tegra's clock driver now provides an implementation of the common
reset API (include/linux/reset.h). Use this instead of the old Tegra-
specific API; that will soon be removed.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-By: Terje Bergstrom <tbergstrom@nvidia.com>
Some additional fixes for 3.13. Regression fixes for audio and hw_i2c,
vram fix for some SI PX cards, race fix in the hwmon code, and a few other
odds and ends.
* 'drm-fixes-3.13' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon/atom: fix bus probes when hw_i2c is set (v2)
drm/radeon: fix null pointer dereference in dce6+ audio code
drm/radeon: fixup bad vram size on SI
drm/radeon: fix VGT_GS_INSTANCE_CNT register
drm/radeon: Fix a typo in Cayman and Evergreen registers
drm/radeon/dpm: simplify state adjust logic for NI
drm/radeon: add radeon_vm_bo_update trace point
drm/radeon: add VMID allocation trace point
drm/radeon/dpm: Convert to use devm_hwmon_register_with_groups
drm/radeon: program DCE2 audio dto just like DCE3
drm/radeon: fix typo in fetching mpll params
Ensure the side-by-side (half) flag is added to any existing flags when
adding modes from 3D_Structure_ALL.
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Thomas Wood <thomas.wood@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Some boards seem to have garbage in the upper
16 bits of the vram size register. Check for
this and clamp the size properly. Fixes
boards reporting bogus amounts of vram.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Just flushing out my pile of bugfixes, most of them for regressions/cc:
stable. Nothing really serious going on.
For outstanding issues we still have the S4 fun due to the hsw S4
duct-tape pending (seems like I need to switch into angry maintainer mode
on that one). And there's the mode merging revert to make my g33 work
again still pending for drm core. For that one I don't have any more clue
(and it looks like no one else has a good idea either). And apparently the
locking WARN fix in here also needs to be replicated for boot, still
confirming that one though.
* tag 'drm-intel-fixes-2013-12-02' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: Pin pages whilst allocating for dma-buf vmap()
drm/i915: MI_PREDICATE_RESULT_2 is HSW only
drm/i915: Make the DERRMR SRM target global GTT
drm/i915: use the correct force_wake function at the PC8 code
drm/i915: Fix pipe CSC post offset calculation
drm/i915: Simplify DP vs. eDP detection
drm/i915: Check VBT for eDP ports on VLV
drm/i915: use crtc_htotal in watermark calculations to match fastboot v2
drm/i915: Pin relocations for the duration of constructing the execbuffer
drm/i915: take mode config lock around crtc disable at suspend
drm/i915: Prefer setting PTE cache age to 3
drm/i915/ddi: set sink to power down mode on dp disable
This assortment of patches fix a few build and sparse warnings and make
sure to always return -EFAULT on copy_from_user() failures. Finally the
upcasting from struct drm_crtc to struct tegra_dc is made safer to
prevent potential segmentation faults.
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Merge tag 'drm/for-3.13-rc3' of git://anongit.freedesktop.org/tegra/linux into drm-fixes
drm/tegra: Fixes for v3.13-rc3
This assortment of patches fix a few build and sparse warnings and make
sure to always return -EFAULT on copy_from_user() failures. Finally the
upcasting from struct drm_crtc to struct tegra_dc is made safer to
prevent potential segmentation faults.
* tag 'drm/for-3.13-rc3' of git://anongit.freedesktop.org/tegra/linux:
drm/tegra: return -EFAULT if copy_from_user() fails
gpu: host1x: Fix a few sparse warnings
drm/tegra: Force cast to __iomem to make sparse happy
drm/tegra: Make tegra_drm_driver static
drm/tegra: Fix address space mismatches
drm/tegra: Tightly bind RGB output to DC
drm/tegra: Make CRTC upcasting safer
gpu: host1x: Silence a few warnings with LPAE=y
5dc9e1e8 was a bit over-ambitious, and accidentially removed handling
for imported prime buffers.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Fix some pageflip, oopses and some better clock support for some chipsets
* 'drm-nouveau-next' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nv50/disp: min/max are reversed in nv50_crtc_gamma_set()
drm/nouveau/sw: fix oops if gpu has its display block disabled
drm/nouveau: unreference fence after syncing
drm/nouveau/kms: send timestamp data for correct head in flip completion events
drm/nouveau/clk: Add support for NVAA/NVAC
drm/nouveau/fifo: Hook up pause and resume for NV50 and NV84+
drm/nv10/plane: some chipsets don't support NV12
drm/nv10/plane: add downscaling restrictions
drm/nv10/plane: fix format computation
drm/nv04-nv30/clk: provide an empty domain list
Some user-space apps expects to find them there.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Also request kernel ttm_buffer objects for buffer objects that obviously
aren't visible to user-space, and save some device address space.
The accounting was broken in a couple of ways:
1) We did not differentiate between user dma buffers and kernel dma buffers.
2) The ttm_bo_acc_size function is broken in that it
a) Doesn't take into account the size of the optional dma address array,
b) Doesn't take into account the fact that drivers typically embed the
ttm_tt structure.
This needs to be fixed in ttm, but meanwhile provide a vmwgfx-specific
function to do the job.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Allocation was duplicating code. Comments were missing.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Failure to do this would make the drm_mode_get_crtc ioctl return
without crtc mode info, indicating that no mode was set.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
We should be taking the minimum here instead of the max. It could lead
to a buffer overflow.
Fixes: 438d99e3b1 ('drm/nvd0/disp: initial crtc object implementation')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
a/drm/nv50_display.c b/drm/nv50_display.c
index f8e66c08b11a..4e384a2f99c3 100644
Otherwise none of the format checks pass, since the width was still in
16.16 encoding.
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
copy_from_user() returns the number of bytes remaining if it fails, but
we want to return -EFAULT here.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Include the bus.h header, so that various function declarations are
visible in the source file that implements those functions. This keeps
sparse from suggesting that they should be made static.
Make the host1x_bus_type variable static since it isn't used globally.
Finally replace the slightly unsafe dev_set_name(dev, name) by the more
secure dev_set_name(dev, "%s", name).
Signed-off-by: Thierry Reding <treding@nvidia.com>
The fbdev screen memory pointer is annotated __iomem, so cast the kernel
virtual address to that address space to make the warning go away.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Previously the association to a DC was done via the encoder's .crtc
field. That has the disadvantage that when an encoder is detached from
its CRTC, that field is set to NULL, leading to situations where it is
impossible to access the DC registers required by the RGB output.
However, the coupling between DC and RGB output is really fixed on
Tegra. While they can be detached logically in DRM, the RGB output can
rely on the DC's existence.
Signed-off-by: Thierry Reding <treding@nvidia.com>
When upcasting a NULL CRTC object, propagate the NULL pointer instead of
some invalid pointer. This allows subsequent code to check that the cast
object is valid.
Signed-off-by: Thierry Reding <treding@nvidia.com>
This register was incorrect for evergreen and cayman.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
According to documentation, 0x00008A60 should be PA_SU_LINE_STIPPLE_VALUE.
Signed-off-by: Alexandre Demers <alexandre.f.demers@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This is based on a similar patch from Alexandre Demers.
While fixing up some warnings with that patch I saw some
additional cleanups that could be applied. This patch
simplifies the logic for patching the power state.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Alexandre Demers <alexandre.f.demers@gmail.com>
Also rename the function to better reflect what it is doing.
agd5f: fix argument size warning
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Simplify the code and fix race condition seen because
attribute files were created after hwmon device registration.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Copy-paste typo. Value should be 0-2, not 0-1.
Noticed-by: Sylvain BERTRAND <sylware@legeek.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This patch resolves a dead lock issue that could be incurred when
exynos_drm_crtc_dpms function was called.
The exynos_drm_crtc_dpms function waits for the completion of pended
page flip events. However, preclose callback - this releases all unhandled
page flip events - is called prior to the exynos_drm_crtc_dpms function call
when drm is closed. So at this time, this will make the exynos_drm_crtc_dpms
to wait infiniately for the completion of the page flip events.
This patch releases the unhandled page flip events at postclose instead
of preclose so that exynos_drm_crtc_dpms function can be waked up.
Changelog v2:
- fix a memory leak when drm is closed.
. it has a memory leak when a requeste page flip is handled after
drm_events_release() is called and before drm_fb_release()
is called. At this time, a drm_pending_event will not be freed.
So also this chage releases the drm_pending_event at postclose().
And it calls drm_vblank_put() for pair if there is any unhandled page
flip event.
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Thierry Reding