kernel/drivers/gpu/drm/tegra/dc.c, branch linux-4.16.y

drm/tegra: dc: Using NULL instead of plain integer

2018-03-28T15:01:13Z

Fixes the following sparse warnings: drivers/gpu/drm/tegra/dc.c:2181:69: warning: Using plain integer as NULL pointer Signed-off-by: Wei Yongjun Signed-off-by: Thierry Reding

drm/tegra: dc: Use correct format array for Tegra124

2018-03-22T14:28:09Z

Use tegra124_(primary|overlay)_formats for Tegra124, otherwise the count specified in the Tegra124 SoC info structure will be different from the array size and cause a crash. Fixes: 511c7023cf23 ("drm/tegra: dc: Support more formats") Signed-off-by: Stefan Agner Acked-by: Marcel Ziswiler Signed-off-by: Thierry Reding

drm/tegra: dc: Detach IOMMU group from domain only once

2018-03-19T08:57:04Z

Detaching from an IOMMU group multiple times can lead to a crash. This could potentially be fixed in the IOMMU driver, but it's easy to avoid the subsequent detach operations in this driver, so do that as well. Signed-off-by: Thierry Reding

drm/tegra: dc: Properly cleanup overlay planes

2018-01-08T15:24:13Z

The first overlay plane can leak if initialization of the second overlay plane fails. Fix this by properly destroying the first overlay plane on error. Suggested-by: Dmitry Osipenko Signed-off-by: Thierry Reding

drm/tegra: dc: Fix possible_crtcs mask for planes

2018-01-08T15:24:05Z

Cursor and overlay planes use a possible_crtcs mask based on the DC pipe number. However, DRM requires each bit in the mask to correspond to the index of the CRTC, which will be different from the DC pipe number for a configuration where the first display controller is disabled, or where a deferred probe leads to the first display controller being probed after the first. Suggested-by: Dmitry Osipenko Signed-off-by: Thierry Reding

drm/tegra: dc: Implement legacy blending

2017-12-21T13:55:55Z

This implements alpha blending on legacy display controllers (Tegra20, Tegra30 and Tegra114). While it's theoretically possible to support the zpos property to enable userspace to specify the Z-order of each plane individually, this is not currently supported and the same fixed Z- order as previously defined is used. Reverts commit 71835caa00e8 ("drm/tegra: fb: Force alpha formats") since the opaque formats are now supported. Reported-by: Dmitry Osipenko Fixes: 7772fdaef939 ("drm/tegra: Support ARGB and ABGR formats") Signed-off-by: Thierry Reding

drm/tegra: dc: Link DC1 to DC0 on Tegra20

2017-12-21T13:52:38Z

Hardware reset isn't actually broken on Tegra20, but there is a dependency on the first display controller to be taken out of reset for the second to be enabled successfully. Model this dependency using a PM device link. Signed-off-by: Dmitry Osipenko [treding@nvidia.com: minor cleanups, extend commit message] Signed-off-by: Thierry Reding

drm/tegra: Fix non-debugfs builds

2017-12-21T13:52:38Z

The new debugfs registration fails to build when CONFIG_DEBUGFS is disabled, because the drm_crtc structure is lacking a member in that configuration: drivers/gpu/drm/tegra/dc.c: In function 'tegra_dc_late_register': drivers/gpu/drm/tegra/dc.c:1204:28: error: 'struct drm_crtc' has no member named 'debugfs_entry' Without CONFIG_DEBUGFS, the rest of the function already degrades into nothing, so we just avoid the one assignment. Fixes: b95800eeef09 ("drm/tegra: dc: Register debugfs in ->late_register()") Signed-off-by: Arnd Bergmann Signed-off-by: Thierry Reding

drm/tegra: Use IOMMU groups

2017-12-21T13:52:36Z

In order to support IOMMUs more generically and transparently handle the ARM SMMU on Tegra186, move to using groups instead of devices for domain attachment. An IOMMU group is a set of devices that share the same IOMMU domain and is therefore a good match to represent what Tegra DRM needs. Signed-off-by: Thierry Reding

drm/tegra: Implement zpos property

2017-12-21T13:52:35Z

Implement the standard zpos property for planes on Tegra124 and later. Earlier generations have a different blending unit that needs different programming. Signed-off-by: Thierry Reding