linux.git/drivers/gpu/drm/tegra/gr2d.c, branch v5.2

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Enrico Weigelt 
Reviewed-by: Kate Stewart 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman

drm/tegra: gr2d: Track interface version

2018-05-18T20:00:13+00:00

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 
Tested-by: Dmitry Osipenko 
Signed-off-by: Thierry Reding

drm/tegra: Refactor IOMMU attach/detach

2018-05-17T12:08:40+00:00

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 
Signed-off-by: Thierry Reding

drm/tegra: gr2d: Properly clean up resources

2018-05-04T15:07:22+00:00

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 
Signed-off-by: Thierry Reding

drm/tegra: gr2d: Add IOMMU support

2018-05-04T12:19:54+00:00

Attach GR2D to the display IOMMU group in order to provide GR2D access
to BO's IOVA.

Signed-off-by: Dmitry Osipenko 
Signed-off-by: Thierry Reding

gpu: host1x: syncpt: Request syncpoints per client

2017-10-20T12:19:51+00:00

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

gpu: host1x: Refactor channel allocation code

2017-06-15T12:25:38+00:00

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 
Reviewed-by: Dmitry Osipenko 
Tested-by: Dmitry Osipenko 
Signed-off-by: Thierry Reding

gpu: host1x: Forbid unrelated SETCLASS opcode in the firewall

2017-06-15T12:23:50+00:00

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 
Reviewed-by: Erik Faye-Lund 
Reviewed-by: Mikko Perttunen 
Signed-off-by: Thierry Reding

drm/tegra: add MODULE_DEVICE_TABLEs

2014-08-04T08:07:39+00:00

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: 
Signed-off-by: Stephen Warren 
Signed-off-by: Thierry Reding

drm/tegra: Remove host1x drm_bus implementation

2014-06-05T21:14:46+00:00

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