linux-toradex.git/drivers/gpu/host1x/dev.c, branch v4.4-rc6

gpu: host1x: Provide a proper struct bus_type

2015-01-27T09:09:14+00:00

Previously the struct bus_type exported by the host1x infrastructure was
only a very basic skeleton. Turn that implementation into a more full-
fledged bus to support proper probe ordering and power management.

Note that the bus infrastructure needs to be available before any of the
drivers can be registered. This is automatically ensured if all drivers
are built as loadable modules (via symbol dependencies). If all drivers
are built-in there are no such guarantees and the link order determines
the initcall ordering. Adjust drivers/gpu/Makefile to make sure that the
host1x bus infrastructure is initialized prior to any of its users (only
drm/tegra currently).

v2: Fix building host1x and tegra-drm as modules
    Reported-by: Dave Airlie 

Reviewed-by: Sean Paul 
Reviewed-by: Mark Zhang 
Signed-off-by: Thierry Reding

gpu: host1x: Add Tegra124 support

2013-12-19T08:29:52+00:00

Tegra124 has 192 syncpoints whereas its predecessors had 32 syncpoints.
This required changes to the hardware register layout.

Signed-off-by: Arto Merilainen 
Signed-off-by: Thierry Reding

gpu: host1x: Add MIPI pad calibration support

2013-12-19T08:29:43+00:00

This driver adds support to perform calibration of the MIPI pads for CSI
and DSI.

Signed-off-by: Thierry Reding

gpu: host1x: Disable clock on probe failure

2013-10-31T08:55:46+00:00

Add a missing clk_disable_unprepare() before returning from the driver's
.probe() function on error.

Signed-off-by: Wei Yongjun 
Reviewed-by: Terje Bergstrom 
Signed-off-by: Thierry Reding

gpu: host1x: Add support for Tegra114

2013-10-31T08:55:41+00:00

Tegra114 uses a slightly updated version of host1x with an additional
syncpoint.

Signed-off-by: Thierry Reding

drm/tegra: Move subdevice infrastructure to host1x

2013-10-31T08:55:33+00:00

The Tegra DRM driver currently uses some infrastructure to defer the DRM
core initialization until all required devices have registered. The same
infrastructure can potentially be used by any other driver that requires
more than a single sub-device of the host1x module.

Make the infrastructure more generic and keep only the DRM specific code
in the DRM part of the driver. Eventually this will make it easy to move
the DRM driver part back to the DRM subsystem.

Signed-off-by: Thierry Reding

gpu: host1x: Do not discard .remove()

2013-10-31T08:20:07+00:00

The device can be unbound from the driver via sysfs, so regardless of
whether the driver is builtin or a module, its .remove() function needs
to stick around.

Signed-off-by: Thierry Reding

drm/tegra: Rename host1x_drm structure to tegra_drm

2013-10-31T08:20:05+00:00

The host1x and Tegra DRM drivers are currently tightly coupled. Renaming
the structure marks the boundary more clearly.

Signed-off-by: Thierry Reding

gpu: host1x: Check for valid host1x pointer

2013-09-03T08:10:11+00:00

Under rare circumstances it can happen that the host1x driver's .probe()
doesn't finish properly, in which case the device's driver-specific data
will not be set. Instead of crashing in such a situation, propagate the
error to callers of the host1x_get_drm_data() function.

Signed-off-by: Thierry Reding

drm/tegra: Add gr2d device

2013-04-22T10:40:04+00:00

Add client driver for 2D device, and IOCTLs to pass work to host1x
channel for 2D.

Also adds functions that can be called to access sync points from
DRM.

Signed-off-by: Arto Merilainen 
Signed-off-by: Terje Bergstrom 
Reviewed-by: Thierry Reding 
Tested-by: Thierry Reding 
Tested-by: Erik Faye-Lund 
Signed-off-by: Thierry Reding