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  1. 16 Jun, 2017 6 commits
    • Jordan Crouse's avatar
      drm/msm: gpu: Enable zap shader for A5XX · 7c65817e
      Jordan Crouse authored 
      The A5XX GPU powers on in "secure" mode. In secure mode the GPU can
only render to buffers that are marked as secure and inaccessible
to the kernel and user through a series of hardware protections. In
practice secure mode is used to draw things like a UI on a secure
video frame.

In order to switch out of secure mode the GPU executes a special
shader that clears out the GMEM and other sensitve registers and
then writes a register. Because the kernel can't be trusted the
shader binary is signed and verified and programmed by the
secure world. To do this we need to read the MDT header and the
segments from the firmware location and put them in memory and
present them for approval.

For targets without secure support there is an out: if the
secure world doesn't support secure then there are no hardware
protections and we can freely write the SECVID_TRUST register from
the CPU. We don't have 100% confidence that we can query the
secure capabilities at run time but we have enough calls that
need to go right to give us some confidence that we're at least doing
something useful.

Of course if we guess wrong you trigger a permissions violation
which usually ends up in a system crash but thats a problem
that shows up immediately.

[v2: use child device per Bjorn]
[v3: use generic MDT loader per Bjorn]
[v4: use managed dma functions and ifdefs for the MDT loader]
[v5: Add depends for QCOM_MDT_LOADER]
Signed-off-by: default avatarJordan Crouse <jcrouse@codeaurora.org>
Acked-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
[robclark: fix Kconfig to use select instead of depends + #if IS_ENABLED()]
Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
      7c65817e
    • Dave Airlie's avatar
      BackMerge tag 'v4.12-rc5' into drm-next · 925344cc
      Dave Airlie authored 
      Linux 4.12-rc5 for nouveau fixes
      925344cc
    • Dave Airlie's avatar
      Merge tag 'imx-drm-next-2017-06-08' of git://git.pengutronix.de/git/pza/linux into drm-next · a6821698
      Dave Airlie authored 
      imx-drm: cleanups and YUV 4:2:0 memory read/write reduction support

- Remove counter load enable form PRE, which has no effect.
- Add support for setting the double read/write reduction flag in channel
  parameter memory. This can be used to save some memory bandwidth when
  capturing in YUV 4:2:0 chroma subsampled formats.
- Allocate DMA channel structures as needed, most of the 64 channels are
  unused or even reserved.
- Remove unused interrupt busy waiting routine.
- Set VDIC field order for both AUTO and MAN inputs simultaneously as
  both can't be active at the same time.

* tag 'imx-drm-next-2017-06-08' of git://git.pengutronix.de/git/pza/linux:
  gpu: ipu-v3: vdic: include AUTO field order bit in ipu_vdi_set_field_order
  gpu: ipu-v3: remove interrupt busy waiting routine
  gpu: ipu-v3: allocate ipuv3_channels as needed
  gpu: ipu-v3: Add support for double read/write reduction
  gpu: ipu-v3: prg: remove counter load enable
      a6821698
    • Dave Airlie's avatar
      Merge tag 'drm-fsl-dcu-for-v4.13' of http://git.agner.ch/git/linux-drm-fsl-dcu into drm-next · 033fd325
      Dave Airlie authored 
      some fsl-dcu cleanups

* tag 'drm-fsl-dcu-for-v4.13' of http://git.agner.ch/git/linux-drm-fsl-dcu:
  drm/fsl-dcu: use new drm_atomic_helper_shutdown
  drm/fsl-dcu: implement irq_preinstall/uninstall callbacks
  drm/fsl: Drop drm_vblank_cleanup
      033fd325
    • Dave Airlie's avatar
      Merge branch 'drm/next/du' of git://linuxtv.org/pinchartl/media into drm-next · 202dfa08
      Dave Airlie authored 
      The series interleaves DRM and V4L2 patches due to dependencies between the R-
Car DU and VSP drivers. Mauro has acked all the V4L2 patches to go through
your tree, and they don't conflict with anything queued for v4.13 in his tree.
If I need to send any conflicting patches through Mauro's tree for v4.13, I'll
make sure to base them on this branch.

* 'drm/next/du' of git://linuxtv.org/pinchartl/media:
  drm: rcar-du: Map memory through the VSP device
  v4l: vsp1: Add API to map and unmap DRM buffers through the VSP
  v4l: vsp1: Map the DL and video buffers through the proper bus master
  v4l: rcar-fcp: Add an API to retrieve the FCP device
  v4l: rcar-fcp: Don't get/put module reference
  drm: rcar-du: Register a completion callback with VSP1
  v4l: vsp1: Extend VSP1 module API to allow DRM callbacks
  v4l: vsp1: Postpone frame end handling in event of display list race
  drm: rcar-du: Arm the page flip event after queuing the page flip
      202dfa08
    • Dave Airlie's avatar
      Merge tag 'sunxi-drm-for-4.13' of... · 7249e3d6
      Dave Airlie authored 
      Merge tag 'sunxi-drm-for-4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into drm-next

sun4i-drm changes for 4.13

An unusually big pull request for this merge window, with three notable
features:
  - V3s display engine support. This is especially notable because it uses
    a different display engine used on the newer Allwinner SoCs (H3, A64
    and the likes) that will be quite easily supported now.
  - HDMI support for the old Allwinner SoCs. This is enabled only on the
    A10s for now, but should be really easy to extend to deal with A10, A20
    and A31
  - Preliminary work to deal with dual-pipeline SoCs (A10, A20, A31, H3,
    etc.). It currently ignores the second pipeline, but we can use the
    dual-pipelines bindings. This will be useful to enable the display
    pipeline while we work on the dual-pipeline.

* tag 'sunxi-drm-for-4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux: (27 commits)
  drm/sun4i: Add compatible for the A10s pipeline
  drm/sun4i: Add HDMI support
  dt-bindings: display: sun4i: Add allwinner,tcon-channel property
  dt-bindings: display: sun4i: Add HDMI display bindings
  drm/sun4i: Ignore the generic connectors for components
  drm/sun4i: tcon: multiply the vtotal when not in interlace
  drm/sun4i: tcon: Change vertical total size computation inconsistency
  drm/sun4i: tcon: Fix tcon channel 1 backporch calculation
  drm/sun4i: tcon: Switch mux on only for composite
  drm/sun4i: tcon: Move the muxing out of the mode set function
  drm/sun4i: tcon: Add channel debug
  drm/sun4i: tcon: add support for V3s TCON
  drm/sun4i: Add compatible string for V3s display engine
  drm/sun4i: add support for Allwinner DE2 mixers
  drm/sun4i: add a Kconfig option for sun4i-backend
  drm/sun4i: abstract a engine type
  drm/sun4i: return only planes for layers created
  dt-bindings: add bindings for DE2 on V3s SoC
  drm/sun4i: backend: Clarify sun4i_backend_layer_enable debug message
  drm/sun4i: Set TCON clock inside sun4i_tconX_mode_set
  ...
      7249e3d6
  3. 15 Jun, 2017 29 commits
  5. 14 Jun, 2017 5 commits
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