Don't attempt to start/stop the uvd block if pg is disabled.
Reviewed-by: NEric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

We already query this at driver init, so use that info.  Also
handles virtualization cases.
Reviewed-by: Nmonk liu <monk.liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Pcie registers may not be available in a virtualized
environment.
Reviewed-by: Nmonk liu <monk.liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Allows the user to force the supported pcie gen and lane
config on both the asic and the chipset.
Useful for debugging pcie problems and for virtualization
where we may not be able to query the pcie bridge caps.

Default to:
gen: chipset 1/2, asic 1/2/3
lanes: 1/2/4/8/16

v2: fix bare metal case
Reviewed-by: Nmonk liu <monk.liu@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

displayport multistream fixes from AMD.

* 'drm-fixes-mst' of git://people.freedesktop.org/~airlied/linux:
  drm/dp/mst: deallocate payload on port destruction
  drm/dp/mst: Reverse order of MST enable and clearing VC payload table.
  drm/dp/mst: move GUID storage from mgr, port to only mst branch
  drm/dp/mst: change MST detection scheme
  drm/dp/mst: Calculate MST PBN with 31.32 fixed point
  drm: Add drm_fixp_from_fraction and drm_fixp2int_ceil
  drm/mst: Add range check for max_payloads during init
  drm/mst: Don't ignore the MST PBN self-test result
  drm: fix missing reference counting decrease

This is needed to properly deallocate port payload
after downstream branch get unplugged.

In order to do this unplugged MST topology should
be preserved, to find first alive port on path to
unplugged MST topology, and send payload deallocation
request to branch device of found port.

For this mstb and port kref's are used in reversed
order to track when port and branch memory could be
freed.

Added additional functions to find appropriate mstb
as described above.
Signed-off-by: NMykola Lysenko <Mykola.Lysenko@amd.com>
Reviewed-by: NHarry Wentland <Harry.Wentland@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>

On DELL U3014 if you clear the table before enabling MST it sometimes
hangs the receiver.
Signed-off-by: NAndrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Reviewed-by: NHarry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Previous implementation does not handle case below: boot up one MST branch
to DP connector of ASIC. After boot up, hot plug 2nd MST branch to DP output
of 1st MST, GUID is not created for 2nd MST branch. When downstream port of
2nd MST branch send upstream request, it fails because 2nd MST branch GUID
is not available.

New Implementation: only create GUID for MST branch and save it within Branch.
Signed-off-by: NHersen Wu <hersenxs.wu@amd.com>
Reviewed-by: NHarry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

1. Get edid for all connected MST displays, not only on logical ports,
   in the same thread as MST topology detection is done:
     There are displays that have branches inside w/o logical ports.
     So in case another SST display connected downstream system can
     end-up in situation when 3 DOWN requests sent: two for
    ‘remote i2c read’ and one for ‘enum path resources’, making slots full.

2. Call notification callback in one place in the end of topology discovery/update:
     This is done to reduce number of events sent to userspace in case complex
     topology discovery is going, adding multiple number of connectors;

3. Remove notification callback call from short pulse interrupt processing function:
     This is done in order not to block interrupt processing function, in case any
     MST request will be made from it. Notification will be send from topology
     discovery/update work item.
Signed-off-by: NMykola Lysenko <Mykola.Lysenko@amd.com>
Reviewed-by: NHarry Wentland <Harry.Wentland@amd.com>
Cc: stable@vger.kernel.org
Acked-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Our PBN value overflows the 20 bits integer part of the 20.12
fixed point. We need to use 31.32 fixed point to avoid this.

This happens with display clocks larger than 293122 (at 24 bpp),
which we see with the Sharp (and similar) 4k tiled displays.
Signed-off-by: NHarry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

drm_fixp_from_fraction allows us to create a fixed point directly
from a fraction, rather than creating fixed point values and dividing
later. This avoids overflow of our 64 bit value for large numbers.

drm_fixp2int_ceil allows us to return the ceiling of our fixed point
value.

[airlied: squash Jordan's fix]
32-bit-build-fix: Jordan Lazare <Jordan.Lazare@amd.com>
Signed-off-by: NHarry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

max_payload is limited by the space we have in
drm_dp_mst_topology_mgr::vcpi_mask,payload_mask. We need to track
max_payloads+1 IDs in these masks, see drm_dp_mst_assign_payload_id().
Add a sanity check for this.

Caught by coverity.
Signed-off-by: NImre Deak <imre.deak@intel.com>
Reviewed-by: NDavid Weinehall <david.weinehall@intel.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Otherwise this call would have no effect.

Caught by Coverity.
Signed-off-by: NImre Deak <imre.deak@intel.com>
Reviewed-by: NDavid Weinehall <david.weinehall@intel.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

In drm_dp_mst_allocate_vcpi, it returns true in two paths,
but in one path, there is no reference couting decrease.
Signed-off-by: NInsu Yun <wuninsu@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDave Airlie <airlied@redhat.com>

- fix and enable iceland/topaz support
- handle WC on platforms that don't support it

* 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu: disable uvd and vce clockgating on Fiji
  drm/amdgpu: remove exp hardware support from iceland
  drm/amdgpu: load MEC ucode manually on iceland
  drm/amdgpu: don't load MEC2 on topaz
  drm/amdgpu: drop topaz support from gmc8 module
  drm/amdgpu: pull topaz gmc bits into gmc_v7
  drm/amdgpu: The VI specific EXE bit should only apply to GMC v8.0 above
  drm/amdgpu: iceland use CI based MC IP
  drm/amdgpu: move gmc7 support out of CIK dependency
  drm/amdgpu/gfx7: enable cp inst/reg error interrupts
  drm/amdgpu/gfx8: enable cp inst/reg error interrupts
  drm/amdgpu: mask out WC from BO on unsupported arches
  drm/radeon: mask out WC from BO on unsupported arches
  drm: add helper to check for wc memory support
  drm/amdgpu: no need to load MC firmware on fiji

Merge tag 'drm-amdkfd-fixes-2016-01-28' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes

two static checker fixes.

* tag 'drm-amdkfd-fixes-2016-01-28' of git://people.freedesktop.org/~gabbayo/linux:
  drm/amdkfd: Remove unnecessary cast in kfree
  drm/amdgpu: fix non-ANSI declaration of amdgpu_amdkfd_gfx_*_get_functions()

Merge branch 'exynos-drm-fixes' of git://git.kernel.org:/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes

  Just regression fixes.
   - Fix build warning and error without PM configuration
   - Fix no display issue on Snow board reported by Michal Suchanek,
     http://www.spinics.net/lists/dri-devel/msg99473.html

* 'exynos-drm-fixes' of git://git.kernel.org:/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm/exynos: dp: Fix panel and bridge lookup logic
  drm: exynos: make PM functions as __maybe_unused
  drm/exynos: fix building without CONFIG_PM_SLEEP

Merge branch 'drm/adv7511' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into drm-fixes

misc adv7511 edid reading fixes.

* 'drm/adv7511' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  drm: adv7511: it's HPD, not HDP
  drm: adv7511: mark ADV7511_REG_EDID_READ_CTRL volatile
  drm: adv7511: really enable interrupts for EDID detection

misc i915 fixes.

* tag 'drm-intel-fixes-2016-02-04' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: refine qemu south bridge detection
  drm/i915: Remove select to deleted STOP_MACHINE from Kconfig
  drm/i915: Fix NULL plane->fb oops on SKL
  drm/i915: Don't reject primary plane windowing with color keying enabled on SKL+
  drm/i915/dp: fall back to 18 bpp when sink capability is unknown
  drm/i915: Make sure DC writes are coherent on flush.

Doesn't work properly yet.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NSonny Jiang <sonny.jiang@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

It's working now.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=92270Reviewed-by: NKen Wang <Qingqing.Wang@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

The smc doesn't handle it.
Reviewed-by: NKen Wang <Qingqing.Wang@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Not validated.
Reviewed-by: NKen Wang <Qingqing.Wang@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

topaz is actually gmc7.
Reviewed-by: NKen Wang <Qingqing.Wang@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Add the topaz golden settings into the gmc7 module.
Reviewed-by: NKen Wang <Qingqing.Wang@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NKen Wang <Qingqing.Wang@amd.com>
Cc: stable@vger.kernel.org

Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NKen Wang <Qingqing.Wang@amd.com>
Cc: stable@vger.kernel.org

It's used by iceland which is VI.
Reviewed-by: NKen Wang <Qingqing.Wang@amd.com>
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Enable CP register/instruction error interrupts. Useful
for debugging command stream problems.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Enable CP register/instruction error interrupts. Useful
for debugging command stream problems.
Reviewed-by: NChristian König <christian.koenig@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Reviewed-by: NChristian König <christian.koenig@amd.com>
Reviewed-by: NMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>
Signed-off-by: NOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

Fix this typo, consequently used over both files :)
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: NLars-Peter Clausen <lars@metafoo.de>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: NArchit Taneja <architt@codeaurora.org>

This register includes a counter which is decremented by the chip on I2C
failures. Also, it is reset when powering down.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: NArchit Taneja <architt@codeaurora.org>

The interrupts for EDID_READY or DDC_ERROR were never enabled in this
driver, so reading EDID always timed out when chip was powered down and
interrupts were used. Fix this and also remove clearing the interrupt
flags, they are cleared in POWER_DOWN mode anyhow (unlike the interrupt
enable flags) according to docs and my tests.
Signed-off-by: NWolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: NArchit Taneja <architt@codeaurora.org>

Commit a9fa8528 ("drm/exynos: dp: add of_graph dt binding support
for panel") made the Exynos DP DT binding more consistent since the OF
graph could be used to lookup either a panel or a bridge device node.

Before that commit, a panel would be looked up using a phandle and a
bridge using the OF graph which made the DT binding not consistent.

But the patch broke the later case since not finding a panel dev node
would cause the driver's to do a probe deferral instead of attempting
to lookup a bridge device node associated with the remote endpoint.

So instead of returning a -EPROBE_DEFER if a panel is not found, check
if there's a bridge and only do a probe deferral if both aren't found.
Signed-off-by: NJavier Martinez Canillas <javier@osg.samsung.com>
Tested-by: NMichal Suchanek <hramrach@gmail.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

The newly added runtime-pm support for exynos-drm encloses the
pm functions in an #ifdef, but not the functions that are called
from them and nowhere else, which produces warnings:

drm/exynos/exynos_drm_dsi.c:733:13: warning: 'exynos_dsi_disable_clock' defined but not used [-Wunused-function]
 static void exynos_dsi_disable_clock(struct exynos_dsi *dsi)
             ^
drm/exynos/exynos_drm_dsi.c:1291:13: warning: 'exynos_dsi_disable_irq' defined but not used [-Wunused-function]
 static void exynos_dsi_disable_irq(struct exynos_dsi *dsi)
             ^

This removes the #ifdef and instead marks the functions as
__maybe_unused, so gcc can silently discard them and all called
functions when CONFIG_PM is disabled.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NInki Dae <inki.dae@samsung.com>

The runtime PM operations use the suspend/resume functions
even when CONFIG_PM_SLEEP is not set, but this now fails
for the exynos DRM driver:

exynos_mixer.c:1289:61: error: 'exynos_mixer_resume' undeclared here (not in a function)
  SET_RUNTIME_PM_OPS(exynos_mixer_suspend, exynos_mixer_resume, NULL)

This removes the #ifdef and instead marks the functions as
__maybe_unused, which does the right thing in all cases and
also looks nicer.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>