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2016-03-16gpu: host1x: bus: Add missing of_node_put()Amitoj Kaur Chawla1-1/+3
for_each_child_of_node() performs an of_node_get() on each iteration, so to break out of the loop an of_node_put() is required. Found using Coccinelle. The semantic patch used for this is as follows: // <smpl> @@ expression e; local idexpression n; @@ for_each_child_of_node(..., n) { ... when != of_node_put(n) when != e = n ( return n; | + of_node_put(n); ? return ...; ) ... } // </smpl> Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
2016-03-16nouveau: fix nv40_perfctr_next() cleanup regressionArnd Bergmann1-2/+4
gcc-6 warns about code in the nouveau driver that is obviously silly: drivers/gpu/drm/nouveau/nvkm/engine/pm/nv40.c: In function 'nv40_perfctr_next': drivers/gpu/drm/nouveau/nvkm/engine/pm/nv40.c:62:19: warning: self-comparison always evaluats to false [-Wtautological-compare] if (pm->sequence != pm->sequence) { The behavior was accidentally introduced in a patch described as "This is purely preparation for upcoming commits, there should be no code changes here.". As far as I can tell, that was true for the rest of that patch except for this one function, which has been changed to a NOP. This patch restores the original behavior. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 8c1aeaa13954 ("drm/nouveau/pm: cosmetic changes") Reviewed-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-03-16drm/omap: fix panel/encoder probesTomi Valkeinen2-2/+2
The recent changes which removed platform data support from panels & encoders had a few mistakes, causing probes of DVI connector and DSI command mode panels to fail every time due to missing '!'. Fix the if()s. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-03-15drm/amdkfd: uninitialized variable in dbgdev_wave_control_set_registers()Dan Carpenter1-1/+1
At the end of the function we expect "status" to be zero, but it's either -EINVAL or uninitialized. Fixes: 788bf83db301 ('drm/amdkfd: Add wave control operation to debugger') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2016-03-14drm/i915: Handle -EDEADLK in drm_atomic_commit from load-detect.Maarten Lankhorst1-1/+2
CI runs with DEBUG_WW_MUTEX_SLOWPATH, so -EDEADLK occurs a lot more. Handle the case where drm_atomic_commit fails with -EDEADLK correctly. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/56D3FEF1.6070306@linux.intel.com Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (cherry picked from commit 3ba86073edcbe2be53d9862d5a3098f0ebf8ae9a) Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2016-03-13drm/vc4: Recognize a more specific compatible string for V3D.Eric Anholt1-0/+1
The Raspberry Pi Foundation's firmware updates are shipping device trees using the old string, so we'll keep recognizing that as this rev of V3D. Still, we should use a more specific name in the upstream DT to clarify which board is being supported, in case we do other revs of V3D in the future. Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2016-03-13dt-bindings: Add binding docs for V3D.Eric Anholt1-0/+12
This was missed in the upstreaming process. Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Stephen Warren <swarren@wwwdotorg.org>
2016-03-14drm/nouveau/clk/gm20b: add basic driverAlexandre Courbot4-0/+201
Add a basic clock driver that reuses the GK20A logic. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: share reusable structures/functionsAlexandre Courbot2-36/+73
Make functions/structures that the GM20B driver will reuse public. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: set lowest frequency during init()Alexandre Courbot1-2/+5
Err on the safe side by setting the lowest frequency (and thus voltage) during device init. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: split gk20a_clk_new()Alexandre Courbot1-12/+31
This allows to instanciate drivers that use the same logic as gk20a with different parameters. Add a constructor function to allow other chips that inherit from this clock to easily initialize its members Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: abstract pl_to_divAlexandre Courbot1-21/+36
pl_to_div may be done differently depending on the chip. Abstract this operation so the same logic can be reused for them as well. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: put mnp values into their own structAlexandre Courbot1-31/+36
This allows us to read them using one single function and will be handy to the GM20B driver. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: emit parent rate as debug messageAlexandre Courbot1-2/+2
Most users are probably not interested in this information. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: only restore divider to 1:1 if neededAlexandre Courbot1-3/+10
Only restore the 1:1 divider if it is not set already. Also use the proper masks for this operation and add a second write as done in the Android code. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: only compute n_lo if neededAlexandre Courbot1-3/+5
n_lo is used if we are going to slide. Compute it only if that condition succeeds to avoid confusion about future usage of this computation. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: fix VCO bit maskAlexandre Courbot1-1/+2
Fix the mask specified to switch to VCO mode was given as an (incorrect) immediate value. Although the side-effect happens to be the same, this is clearly incorrect. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: rename enable/disable functionsAlexandre Courbot1-28/+24
gk20a_pllg_disable() is only used in the context of gk20a_clk_fini(). Move its body there and rename _gk20a_pllg_enable() and _gk20a_pllg_disable() to non-underscored versions. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: reorganize variables in gk20a_pllg_calc_mnp()Alexandre Courbot1-4/+8
Move some variables declarations to the scope where they are actually used to make the code easier to follow. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/clk/gk20a: convert parameters to KhzAlexandre Courbot1-15/+17
Perform computations in Khz instead of Mhz for better precision. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/volt: add GM20B driverAlexandre Courbot4-0/+59
Add basic GM20B volt driver that reuses the GK20A logic. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/volt/gk20a: split constructorAlexandre Courbot2-12/+25
Split the constructor function so we can reuse the same logic in other chips. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/volt/gk20a: share reusable members & functionsVince Hsu2-18/+51
The CVB calculation and voltage setting functions can be reused for the future chips. So move the declaration to gk20a.h. Signed-off-by: Vince Hsu <vinceh@nvidia.com> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/ce/gm107: expose MaxwellDmaCopyABen Skeggs4-2/+59
The HW accepts KeplerDmaCopyA and MaxwellDmaCopyA classes. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gm107: KeplerChannelGpfifoB, and 2048 channelsBen Skeggs4-1/+49
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk110: expose KeplerChannelGpfifoBBen Skeggs9-2/+89
This class supports a WFI method (0x0078) that's not present on the KeplerChannelGpfifoA class. The binary driver exposes both classes on these GPUs for some reason, though there doesn't appear to be any difference in the setup that's done for each (ie. even if you allocate GpfifoA, the WFI method will still work). We shall just expose GpfifoB, as I don't see a good reason to report the presence of both. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: submit NOP after all PBDMA_INTR_0, not just DEVICEBen Skeggs1-1/+2
Prevents the same interrupt from re-triggering forever. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: add vic plumbingBen Skeggs2-0/+3
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: add sec plumbingBen Skeggs2-0/+3
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: add nvdec plumbingBen Skeggs3-0/+4
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: add nvenc plumbingBen Skeggs3-7/+25
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: add msenc plumbingBen Skeggs1-0/+1
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/core: add vic plumbingBen Skeggs4-0/+7
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/core: add nvdec plumbingBen Skeggs7-0/+13
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/core: add nvenc plumbingBen Skeggs7-21/+41
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/core: add msenc plumbingBen Skeggs3-0/+6
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/core: sort engine indices alphabeticallyBen Skeggs1-14/+17
Unlike subdevs, these aren't initialised in a defined order. Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: make use of topology info during gpfifo constructionBen Skeggs5-64/+127
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: make use of topology info during fault recoveryBen Skeggs2-34/+26
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: make use of topology info when handling ctxsw timeoutBen Skeggs1-20/+9
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: read device topology information from hwBen Skeggs3-5/+103
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: cosmetic engine->runlist changesBen Skeggs4-48/+50
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: don't attempt recovery of unknown mmu enginesBen Skeggs1-1/+1
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: identify fault-recovery members more clearlyBen Skeggs2-10/+12
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gk104: rename spoon to pbdma, and move detection to oneinitBen Skeggs2-10/+14
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gf100: fix certain engines not being recovered after a faultBen Skeggs1-2/+2
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gf100: don't attempt recovery of unknown mmu enginesBen Skeggs1-1/+1
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gf100: identify fault-recovery members more clearlyBen Skeggs2-10/+12
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/fifo/gf100: rename spooon to pbdma, and move detection to oneinitBen Skeggs2-12/+17
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2016-03-14drm/nouveau/gr/fuc: Store $r0 in interrupt handlerRoy Spliet14-932/+936
It's supposed to always be 0, but at least nv_iowr() temporarily violates this. Since the ih touches $r0, it should be stored. Signed-off-by: Roy Spliet <rs855@cam.ac.uk> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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