kernel/drivers/gpu/drm/tegra/dsi.c, branch linux-4.1.y

drm/tegra: dc: Unify enabling the display controller

2015-01-27T09:14:58Z

Previously output drivers would enable continuous display mode and power up the display controller at various points during the initialization. This is suboptimal because it accesses display controller registers in output drivers and duplicates a bit of code. Move this code into the display controller driver and enable the display controller as the final step of the ->mode_set_nofb() implementation. Signed-off-by: Thierry Reding

drm/tegra: Remove unused ->mode_fixup() callbacks

2015-01-27T09:14:56Z

All output drivers have now been converted to use the ->atomic_check() callback, so the ->mode_fixup() callbacks are no longer used. Signed-off-by: Thierry Reding

drm/tegra: dsi: Implement ->atomic_check()

2015-01-27T09:14:53Z

The implementation of the ->atomic_check() callback precomputes all parameters to check if the given configuration can be applied. If so the precomputed values are stored in the atomic state object for the encoder and applied during modeset. In that way the modeset no longer needs to perform any checking but simply program values into registers. Signed-off-by: Thierry Reding

drm/tegra: Atomic conversion, phase 2

2015-01-27T09:14:51Z

Hook up the default ->reset() and ->atomic_duplicate_state() helpers. This ensures that state objects are properly created and framebuffer reference counts correctly maintained. Signed-off-by: Thierry Reding

drm/tegra: Atomic conversion, phase 1

2015-01-27T09:14:50Z

Implement initial atomic state handling. Hook up the CRTCs, planes' and connectors' ->atomic_destroy_state() callback to ensure that the atomic state objects don't leak. Furthermore the CRTC now implements the ->mode_set_nofb() callback that is used by new helpers to implement ->mode_set() and ->mode_set_base(). These new helpers also make use of the new plane helper functions which the driver now provides. Signed-off-by: Thierry Reding

drm/tegra: Output cleanup functions cannot fail

2015-01-27T09:14:49Z

The tegra_output_exit() and tegra_output_remove() functions cannot fail, so make them return void. Signed-off-by: Thierry Reding

drm/tegra: Remove remnants of the output midlayer

2015-01-27T09:14:49Z

The tegra_output midlayer is now completely gone and output drivers use it purely as a helper library. Signed-off-by: Thierry Reding

drm/tegra: debugfs cleanup cannot fail

2015-01-27T09:14:48Z

The debugfs cleanup code never fails, so no error is returned. Therefore the functions can all return void instead. Signed-off-by: Thierry Reding

drm/tegra: dsi: Demidlayer

2015-01-27T09:14:48Z

Implement encoder and connector within the DSI driver itself using the Tegra output helpers rather than using the Tegra output as midlayer. By doing so one level of indirection is removed and output drivers become more flexible while keeping the majority of the advantages provided by the common output helpers. Signed-off-by: Thierry Reding

drm/tegra: Stop CRTC at CRTC disable time

2015-01-27T09:14:43Z

Previously output drivers would all stop the display controller in their disable path. However with the transition to atomic modesetting the display controller needs to be kept running until all planes have been disabled so that software can properly determine (using VBLANK counts) when it is safe to remove the framebuffers associated with the planes. Moving this code into the display controller's disable path also gets rid of the duplication of this into all output drivers. Signed-off-by: Thierry Reding