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Set the interface version implemented by the gr2d module. This allows
userspace to pass the correct command stream when programming the gr2d
module.
Reviewed-by: Dmitry Osipenko <[email protected]>
Tested-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Attaching to and detaching from an IOMMU uses the same code sequence in
every driver, so factor it out into separate helpers.
Reviewed-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Failure to register the Tegra DRM client would leak the resources. Move
cleanup code to error unwinding gotos to fix that and share the cleanup
code with the other error paths.
Reviewed-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Attach GR2D to the display IOMMU group in order to provide GR2D access
to BO's IOVA.
Signed-off-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Rather than request syncpoints for a struct device *, request them for a
struct host1x_client *. This is important because subsequent patches are
going to break the assumption that host1x will always be the parent for
devices requesting a syncpoint. It's also a more natural choice because
host1x clients are really the only ones that will know how to deal with
syncpoints.
Note that host1x clients are always guaranteed to be children of host1x,
regardless of their location in the device tree.
Signed-off-by: Thierry Reding <[email protected]>
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This is largely a rewrite of the Host1x channel allocation code, bringing
several changes:
- The previous code could deadlock due to an interaction
between the 'reflock' mutex and CDMA timeout handling.
This gets rid of the mutex.
- Support for more than 32 channels, required for Tegra186
- General refactoring, including better encapsulation
of channel ownership handling into channel.c
Signed-off-by: Mikko Perttunen <[email protected]>
Reviewed-by: Dmitry Osipenko <[email protected]>
Tested-by: Dmitry Osipenko <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Several channels could be made to write the same unit concurrently via
the SETCLASS opcode, trusting userspace is a bad idea. It should be
possible to drop the per-client channel reservation and add a per-unit
locking by inserting MLOCK's to the command stream to re-allow the
SETCLASS opcode, but it will be much more work. Let's forbid the
unit-unrelated class changes for now.
Signed-off-by: Dmitry Osipenko <[email protected]>
Reviewed-by: Erik Faye-Lund <[email protected]>
Reviewed-by: Mikko Perttunen <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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When tegra-drm.ko is built as a module, these MODULE_DEVICE_TABLEs allow
the module to be auto-loaded since the module will match the devices
instantiated from device tree.
(Notes for stable: in 3.14+, just git rm any conflicting file, since they
are added in later kernels. For 3.13 and below, manual merging will be
needed)
Cc: <[email protected]>
Signed-off-by: Stephen Warren <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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The DRM core can now cope with drivers that don't have an associated
struct drm_bus, so the host1x implementation is no longer useful.
Signed-off-by: Thierry Reding <[email protected]>
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Use the more canonical and concise variant of the GPL v2 license text.
Acked-by: Stephen Warren <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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This patch modifies the gr2d to reserve a base for syncpoint.
Signed-off-by: Arto Merilainen <[email protected]>
Reviewed-by: Terje Bergstrom <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Functions host1x_syncpt_request() and _host1x_syncpt_alloc() have
been taking a separate boolean flag ('client_managed') for indicating
if the syncpoint value should be tracked by the host1x driver.
This patch converts the field into generic 'flags' field so that
we can easily add more information while requesting a syncpoint.
Clients are adapted to use the new interface accordingly.
Signed-off-by: Arto Merilainen <[email protected]>
Reviewed-by: Terje Bergstrom <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Add a missing clk_disable_unprepare() before returning from the driver's
.probe() function on error.
Signed-off-by: Wei Yongjun <[email protected]>
Reviewed-by: Terje Bergstrom <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>
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Command stream submissions are the same across all devices that expose
a channel to userspace, so move the code into a generic function.
Signed-off-by: Thierry Reding <[email protected]>
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Instead of using magic numbers for the registers which contain memory
addresses in the firewall table, using symbolic names.
Signed-off-by: Thierry Reding <[email protected]>
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In order to make subsystem-wide changes easier, move the Tegra DRM
driver back into the DRM tree.
Signed-off-by: Thierry Reding <[email protected]>
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