linux-toradex.git/drivers/gpu/drm/radeon, branch v4.9

drm/radeon: fix check for port PM availability

2016-11-29T14:24:13+00:00

The ATPX method does not always exist on the dGPU, it may be located at
the iGPU. The parent device of the iGPU is the root port for which
bridge_d3 is false. This accidentally enables the legacy PM method which
conflicts with port PM and prevented the dGPU from powering on.

Ported from amdgpu commit:
drm/amdgpu: fix check for port PM availability
from Peter Wu.

Fixes: d3ac31f3b4bf9fad (drm/radeon: fix power state when port pm is unavailable (v2))
Signed-off-by: Alex Deucher 
Cc: Peter Wu 
Cc:  # 4.8+

drm/radeon: fix power state when port pm is unavailable (v2)

2016-11-23T18:57:58+00:00

When PCIe port PM is not enabled (system BIOS is pre-2015 or the
pcie_port_pm=off parameter is set), legacy ATPX PM should still be
marked as supported. Otherwise the GPU can fail to power on after
runtime suspend. This affected a Dell Inspiron 5548.

Ideally the BIOS date in the PCI core is lowered to 2013 (the first year
where hybrid graphics platforms using power resources was introduced),
but that seems more risky at this point and would not solve the
pcie_port_pm=off issue.

v2: agd: fix typo

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98505
Signed-off-by: Peter Wu 
Signed-off-by: Alex Deucher 
Cc:  # 4.8+
Reviewed-by: Alex Deucher

Merge branch 'drm-fixes-4.9' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

2016-11-06T23:40:40+00:00

A few more fixes for 4.9.

* 'drm-fixes-4.9' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu: add some error handling to amdgpu_init v2
  drm/amd: fix scheduler fence teardown order v2
  drm/amd/powerplay: don't succeed in getters if fan is missing
  drm/amdgpu: make sure ddc_bus is valid in connector unregister
  drm/radeon: Fix kernel panic on shutdown
  drm/amdgpu: disable runtime pm in certain cases
  drm/radeon: disable runtime pm in certain cases
  drm/amdgpu: add support for new smc firmware on iceland
  drm/amdgpu: add support for new smc firmware on tonga

Merge branch 'drm-fixes-staging' of ssh://people.freedesktop.org/~/linux into drm-fixes

2016-10-31T23:05:54+00:00

Pull the staging fixes tree I had into rc3 to make real -fixes again.

drm/radeon: Fix kernel panic on shutdown

2016-10-31T16:19:39+00:00

Since commit a481daa88fd4 ("drm/radeon: always apply pci shutdown
callbacks"), a Dell Latitude D600 laptop has crashed on shutdown. The
PCI Identification of the graphics adapter is "VGA compatible controller
[0300]: Advanced Micro Devices, Inc. [AMD/ATI] RV250/M9 GL [Mobility
FireGL 9000/Radeon 9000] [1002:4c66] (rev 01)".

Prior to commit b0c80bd5d2e3 ("drm/radeon: fix up dp aux tear down (v2)"),
I have no idea where the panic happened as the screen was blanked before
the crash.  Since that more recent change, the panic has been in routine
radeon_connector_unregister(), and has been shown to be due to a NULL
value in the ddc_bus member of struct drm_connector.

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=178421
Fixes: a481daa88fd4 ("drm/radeon: always apply pci shutdown callbacks")
Signed-off-by: Larry Finger 
Cc: Alex Deucher 
Signed-off-by: Alex Deucher

drm/radeon: disable runtime pm in certain cases

2016-10-31T15:49:29+00:00

If the platform does not support hybrid graphics or ATPX dGPU
power control.

bug: https://bugzilla.kernel.org/show_bug.cgi?id=51381

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

drm/radeon/si_dpm: workaround for SI kickers

2016-10-26T19:39:59+00:00

Consolidate existing quirks. Fixes stability issues
on some kickers.

Signed-off-by: Alex Deucher 
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher

drm/drivers: add support for using the arch wc mapping API.

2016-10-26T06:48:01+00:00

This fixes a regression in all these drivers since the cache
mode tracking was fixed for mixed mappings. It uses the new
arch API to add the VRAM range to the PAT mapping tracking
tables.

Fixes: 87744ab3832 (mm: fix cache mode tracking in vm_insert_mixed())
Reviewed-by: Christian König .
Signed-off-by: Dave Airlie

drm/radeon: drop register readback in cayman_cp_int_cntl_setup

2016-10-25T17:57:22+00:00

The read is taking a considerable amount of time (about 50us on this
machine). The register does not ever hold anything other than the ring
ID that is updated in this exact function, so there is no need for
the read modify write cycle.

This chops off a big chunk of the time spent in hardirq disabled
context, as this function is called multiple times in the interrupt
handler. With this change applied radeon won't show up in the list
of the worst IRQ latency offenders anymore, where it was a regular
before.

Reviewed-by: Christian König 
Signed-off-by: Lucas Stach 
Signed-off-by: Alex Deucher 
Cc: stable@vger.kernel.org

Revert "drm/radeon: fix DP link training issue with second 4K monitor"

2016-10-24T21:00:26+00:00

This reverts commit 1a738347df2ee4977459a8776fe2c62196bdcb1b.

It caused at least some Kaveri laptops to incorrectly report DisplayPort
connectors as connected.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97857
Cc: stable@vger.kernel.org
Reviewed-by: Alex Deucher 
Signed-off-by: Michel Dänzer 
Signed-off-by: Alex Deucher