linux.git/drivers/gpu/drm/amd/amdgpu/amdgpu_atpx_handler.c, branch v4.9-rc2

Merge tag 'v4.8-rc8' into drm-next

2016-09-28T02:08:49+00:00

Linux 4.8-rc8

There was a lot of fallout in the imx/amdgpu/i915 drivers, so backmerge
it now to avoid troubles.

* tag 'v4.8-rc8': (1442 commits)
  Linux 4.8-rc8
  fault_in_multipages_readable() throws set-but-unused error
  mm: check VMA flags to avoid invalid PROT_NONE NUMA balancing
  radix tree: fix sibling entry handling in radix_tree_descend()
  radix tree test suite: Test radix_tree_replace_slot() for multiorder entries
  fix memory leaks in tracing_buffers_splice_read()
  tracing: Move mutex to protect against resetting of seq data
  MIPS: Fix delay slot emulation count in debugfs
  MIPS: SMP: Fix possibility of deadlock when bringing CPUs online
  mm: delete unnecessary and unsafe init_tlb_ubc()
  huge tmpfs: fix Committed_AS leak
  shmem: fix tmpfs to handle the huge= option properly
  blk-mq: skip unmapped queues in blk_mq_alloc_request_hctx
  MIPS: Fix pre-r6 emulation FPU initialisation
  arm64: kgdb: handle read-only text / modules
  arm64: Call numa_store_cpu_info() earlier.
  locking/hung_task: Fix typo in CONFIG_DETECT_HUNG_TASK help text
  nvme-rdma: only clear queue flags after successful connect
  i2c: qup: skip qup_i2c_suspend if the device is already runtime suspended
  perf/core: Limit matching exclusive events to one PMU
  ...

drm/amdgpu/atpx: check for ATIF dGPU wake for display events support

2016-09-22T14:30:30+00:00

Some ATPX laptops implement special circuitry to generate
display hotplug events via ACPI when the dGPU is powered off.
Check if this is supported.

Signed-off-by: Alex Deucher

Revert "drm/amdgpu: work around lack of upstream ACPI support for D3cold"

2016-08-09T04:20:28+00:00

This reverts commit c63695cc5e5f685e924e25a8f9555f6e846f1fc6.

Now that d3cold support is upstream, there is no more need for this
workaround.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=97248

drm/amdgpu: init atpx at switcheroo register time (v2)

2016-07-29T18:36:32+00:00

If we do it at enable time, it's too late for the feature
checks.

v2: drop .init setting as per Peter's comments

Reviewed-by: Peter Wu 
Signed-off-by: Alex Deucher 
Cc: Peter Wu

drm/amdgpu: work around lack of upstream ACPI support for D3cold

2016-07-07T18:51:13+00:00

Until Dave's patch to support the new hybrid gfx ACPI method goes
upstream, we can fallback to the old ATPX method which seems to
still work.

Signed-off-by: Alex Deucher

drm/amdgpu/atpx: track whether if this is a hybrid graphics platform

2016-07-07T18:51:07+00:00

hybrid graphics in this case refers to systems which use the new
platform d3 cold ACPI methods as opposed to ATPX for dGPU power
control.

Reviewed-by: Hawking Zhang 
Acked-by: Christian König 
Signed-off-by: Alex Deucher

drm/amdgpu/atpx: drop forcing of dGPU power control

2016-07-07T18:51:02+00:00

Now that we handle this correctly, there is no need to force
it.

Reviewed-by: Hawking Zhang 
Acked-by: Christian König 
Signed-off-by: Alex Deucher

drm/amdgpu/atpx: add a query for ATPX dGPU power control

2016-07-07T18:51:01+00:00

The runtime pm sequence is different depending on whether or
not the platform supports ATPX dGPU power control.

Reviewed-by: Hawking Zhang 
Acked-by: Christian König 
Signed-off-by: Alex Deucher

drm/amdgpu: add a delay after ATPX dGPU power off

2016-07-07T18:51:01+00:00

ATPX dGPU power control requires a 200ms delay between
power off and on.  This should fix dGPU failures on
resume from power off.

Reviewed-by: Hawking Zhang 
Acked-by: Christian König 
Signed-off-by: Alex Deucher 
Cc: stable@vger.kernel.org

drm/amdgpu: clean up atpx power control handling

2016-07-07T18:51:00+00:00

The presence of the power control method should be determined
via the presence of the method in function 0.  However, some
sbioses only set the appropriate bits in function 1 so use
then to override a missing power control function.

Reviewed-by: Hawking Zhang 
Acked-by: Christian König 
Signed-off-by: Alex Deucher