linux.git/drivers/gpu/drm/tegra/output.c, branch v3.13

drm/tegra: Start connectors with correct DPMS mode

2013-10-31T08:55:44+00:00

A connector's DPMS mode isn't initialized by default, therefore using a
default of 0 (DRM_MODE_DPMS_ON). This can cause problems in that the DRM
core won't explicitly turn on a connector because it thinks that it is
already on.

Signed-off-by: Thierry Reding

drm/tegra: Allocate resources at probe time

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

Since the .init() and .exit() functions are executed whenever the DRM
driver is loaded or unloaded, care must be taken not to use them for
resource allocation. Otherwise deferred probing cannot be used, since
the .init() and .exit() are not run at probe time. Similarly the code
that frees resources must be run at .remove() time. If it is run from
the .exit() function, it can release resources multiple times.

To handle this more consistently, rename the tegra_output_parse_dt()
function to tegra_output_probe() and introduce tegra_output_remove()
which can be used to free output-related resources.

Signed-off-by: Thierry Reding

drm/tegra: Properly cleanup and zero out resources

2013-10-31T08:55:40+00:00

When the DRM driver is unloaded, all the associated resources must be
cleaned up and zeroed out. This is necessary because of the architecture
of the Tegra DRM driver, where not all subdrivers are unloaded along
with the DRM driver. Therefore device-managed managed won't be freed and
memory cannot be assumed to have been cleared (because it hasn't been
reallocated using kzalloc()) by the time the DRM driver is reloaded. It
is therefore necessary to zero out the structures to prevent strange
errors (such as slab corruptions) from occurring.

Signed-off-by: Thierry Reding

drm/tegra: Move driver to DRM tree

2013-10-31T08:55:40+00:00

In order to make subsystem-wide changes easier, move the Tegra DRM
driver back into the DRM tree.

Signed-off-by: Thierry Reding

drm/tegra: Move drm to live under host1x

2013-04-22T10:39:11+00:00

Make drm part of host1x driver.

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

drm: tegra: Add HDMI support

2012-11-20T05:43:53+00:00

This commit adds support for the HDMI output on the Tegra20 SoC. Only
one such output is available, but it can be driven by either of the two
display controllers.

A lot of work on this patch has been contributed by NVIDIA's Mark Zhang
 and many other people at NVIDIA were very helpful in
getting the HDMI support and surrounding infrastructure to work.

Signed-off-by: Thierry Reding 
Tested-by: Stephen Warren 
Acked-by: Mark Zhang 
Reviewed-by: Mark Zhang 
Tested-by: Mark Zhang 
Tested-and-acked-by: Alexandre Courbot 
Acked-by: Terje Bergstrom 
Tested-by: Terje Bergstrom 
Signed-off-by: Dave Airlie

drm: Add NVIDIA Tegra20 support

2012-11-20T05:43:41+00:00

This commit adds a KMS driver for the Tegra20 SoC. This includes basic
support for host1x and the two display controllers found on the Tegra20
SoC. Each display controller can drive a separate RGB/LVDS output.

Signed-off-by: Thierry Reding 
Tested-by: Stephen Warren 
Acked-by: Mark Zhang 
Reviewed-by: Mark Zhang 
Tested-by: Mark Zhang 
Tested-and-acked-by: Alexandre Courbot 
Acked-by: Terje Bergstrom 
Tested-by: Terje Bergstrom 
Signed-off-by: Dave Airlie