kernel.git/drivers/gpu/drm/tegra/output.c, branch linux-3.14.y

drm/tegra: Use proper data type

2014-01-14T13:39:38Z

The last argument to of_get_property() is a pointer to an int, rather than size_t. Signed-off-by: Thierry Reding

drm/tegra: Clarify how panel modes override others

2014-01-14T13:36:51Z

When a panel advertises one or more modes, they are used exclusively. Other methods for obtaining the mode, such as DDC as used for HDMI or binary EDID blobs embedded in the DT, are ignored. The panel drivers should be providing this functionality if they want to expose it as well. Signed-off-by: Thierry Reding

drm/tegra: Add DSI support

2013-12-20T14:56:04Z

This commit adds support for both DSI outputs found on Tegra. Only very minimal functionality is implemented, so advanced features like ganged mode won't work. Due to the lack of other test hardware, some sections of the driver are hardcoded to work with Dalmore. Signed-off-by: Thierry Reding

drm/tegra: Disable outputs for power-saving

2013-12-19T08:29:55Z

When an output is disabled, its DPMS mode is usually set to off. Instead of only disabling the panel (if one is attached), turn the output off entirely to save more power. HDMI doesn't have any panels attached, so it previously didn't save any power at all. With this commit, however, the complete HDMI interface will be turned off, therefore allowing an attached monitor to go into a standby mode. Signed-off-by: Thierry Reding

drm/tegra: Implement panel support

2013-12-17T17:10:00Z

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

drm/tegra: Start connectors with correct DPMS mode

2013-10-31T08:55:44Z

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

2013-10-31T08:55:41Z

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

2013-10-31T08:55:40Z

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

2013-10-31T08:55:40Z

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

2013-04-22T10:39:11Z

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