- 09 Feb, 2016 19 commits
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Lukas Wunner authored
The pre-retina MacBook Pro uses an LVDS panel and a gmux controller to switch the panel between its two GPUs. The panel mode in VBIOS is notoriously bogus on these machines. Use drm_get_edid_switcheroo() in lieu of drm_get_edid() on LVDS if the vga_switcheroo handler is capable of temporarily switching the panel's DDC lines to the discrete GPU. This allows us to retrieve the EDID if the panel is currently muxed to the integrated GPU. Likewise, ask vga_switcheroo to switch DDC before probing LVDS connectors. This only enables EDID probing on the pre-retina MBP (2008 - 2013). The retina MBP (2012 - present) uses eDP and gmux is not capable of switching AUX separately from the main link on these models. This will be addressed in later patches. List of pre-retina MBPs with dual GPUs, either or both Nvidia: [MBP 5,1 2008 nvidia MCP79 + G96 pre-retina 15"] [MBP 5,2 2009 nvidia MCP79 + G96 pre-retina 17"] [MBP 5,3 2009 nvidia MCP79 + G96 pre-retina 15"] [MBP 6,2 2010 intel ILK + nvidia GT216 pre-retina 15"] [MBP 6,1 2010 intel ILK + nvidia GT216 pre-retina 17"] [MBP 9,1 2012 intel IVB + nvidia GK107 pre-retina 15"] v3: Commit newly added due to introduction of drm_get_edid_switcheroo() wrapper which drivers need to opt-in to. v5: Rebase on "vga_switcheroo: Add handler flags infrastructure", i.e. call drm_get_edid_switcheroo() only if the handler indicates that DDC is switchable. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88861 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61115Tested-by:Lukas Wunner <lukas@wunner.de> [MBP 9,1 2012 intel IVB + nvidia GK107 pre-retina 15"] Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/e9466eb3d66b5b30f1e93c3b3da79d8b9ad0830f.1452525860.git.lukas@wunner.de
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Lukas Wunner authored
The pre-retina MacBook Pro uses an LVDS panel and a gmux controller to switch the panel between its two GPUs. The panel mode in VBIOS is notoriously bogus on these machines and some models have no VBIOS at all. Use drm_get_edid_switcheroo() in lieu of drm_get_edid() on LVDS if the vga_switcheroo handler is capable of temporarily switching the panel's DDC lines to the integrated GPU. This allows us to retrieve the EDID if the panel is currently muxed to the discrete GPU. This only enables EDID probing on the pre-retina MBP (2008 - 2013). The retina MBP (2012 - present) uses eDP and gmux is not capable of switching AUX separately from the main link on these models. This will be addressed in later patches. List of pre-retina MBPs with dual GPUs, one of them Intel: [MBP 6,2 2010 intel ILK + nvidia GT216 pre-retina 15"] [MBP 6,1 2010 intel ILK + nvidia GT216 pre-retina 17"] [MBP 8,2 2011 intel SNB + amd turks pre-retina 15"] [MBP 8,3 2011 intel SNB + amd turks pre-retina 17"] [MBP 9,1 2012 intel IVB + nvidia GK107 pre-retina 15"] v3: Commit newly added due to introduction of drm_get_edid_switcheroo() wrapper which drivers need to opt-in to. v5: Rebase on "vga_switcheroo: Add handler flags infrastructure", i.e. call drm_get_edid_switcheroo() only if the handler indicates that DDC is switchable. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88861 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61115Tested-by: -
Lukas Wunner authored
Originally by Seth Forshee <seth.forshee@canonical.com>, 2012-10-04: Some dual graphics machines support muxing the DDC separately from the display, so make use of this functionality when reading the EDID on the inactive GPU. Also serialize drm_get_edid() with a mutex to avoid races on the DDC mux state. Modified by Dave Airlie <airlied@gmail.com>, 2012-12-22: I can't figure out why I didn't like this, but I rewrote this [...] to lock/unlock the ddc lines [...]. I think I'd prefer something like that otherwise the interface got really ugly. Modified by Lukas Wunner <lukas@wunner.de>, 2015-04 - 2015-09: v3: Move vga_switcheroo calls to a wrapper around drm_get_edid() which drivers can call on muxed machines. This avoids other drivers having to go through the vga_switcheroo motions even though they are never used on a muxed platform (Thierry Reding, Daniel Vetter, Alex Deucher) Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88861 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61115Tested-by:Pierre Moreau <pierre.morrow@free.fr> [MBP 5,3 2009 nvidia MCP79 + G96 pre-retina 15"] Tested-by:
William Brown <william@blackhats.net.au> [MBP 8,2 2011 intel SNB + amd turks pre-retina 15"] Tested-by:
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Lukas Wunner authored
Originally by Seth Forshee <seth.forshee@canonical.com>, 2012-10-04: The gmux allows muxing the DDC independently from the display, so support this functionality. This will allow reading the EDID for the inactive GPU, fixing issues with machines that either don't have a VBT or have invalid mode data in the VBT. Modified by Lukas Wunner <lukas@wunner.de>, 2015-04 - 2015-12: Change semantics of ->switch_ddc handler callback to return previous DDC owner. Original version tried to determine previous DDC owner with find_active_client() in vga_switcheroo but this fails if the inactive client registers before the active client. v2.4: Retain semantics of ->switchto handler callback to switch all pins, including DDC (Daniel Vetter) v4: Advertise ->switch_ddc handler callback only on the pre-retina Macbook Pro. The retina uses eDP instead of LVDS and gmux no longer does the muxing itself but merely controls an external mux. That mux is incapable of switching the AUX channel separately from the main link. It's an NXP CBTL06142 (alternate parts: TI HD3SS212, Pericom PI3VDP12412, see datasheets below). v5: Rebase on "apple-gmux: Track switch state". Rebase on "vga_switcheroo: Add handler flags infrastructure". Rebase on 5d170139 ("Constify vga_switcheroo_handler"), requires 2 structs, 1x with ->switchto for pre-retinas, 1x without for retinas). Add error message if handler registration with vga_switcheroo fails. Teardowns identifying the mux: http://www.electronicproducts.com/-whatsinside_text-145.aspx http://slideshare.net/jjwu6266/apple-2012-wwdc-apple-macbook-pro-with-retina-display http://www.techrepublic.com/blog/cracking-open/teardown-shows-retina-macbook-pro-is-nearly-impossible-to-upgrade-difficult-to-work-on/ Mux Datasheets: http://www.nxp.com/documents/data_sheet/CBTL06141.pdf http://www.ti.com/lit/ds/symlink/hd3ss212.pdf https://www.pericom.com/assets/Datasheets/PI3VDP12412.pdf Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88861 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61115Tested-by:Darren Hart <dvhart@linux.intel.com> Signed-off-by:
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Lukas Wunner authored
gmux has 3 switch registers: * GMUX_PORT_SWITCH_DISPLAY switches the panel * GMUX_PORT_SWITCH_DDC switches the panel's DDC lines (only on pre-retinas; on retinas this is a no-op) * GMUX_PORT_SWITCH_EXTERNAL switches the external DP port(s) (only on models without Thunderbolt, i.e. introduced before 2011; those with Thunderbolt switch only HPD/AUX, not the main link) Currently we switch all 3 registers in unison. gmux does not preserve the switch state during suspend, so we currently read GMUX_PORT_SWITCH_DISPLAY before suspend and restore all 3 registers to this value on resume. With the upcoming ->switch_ddc callback, GMUX_PORT_SWITCH_DDC may temporarily contain a different value than the other 2 registers. If we happen to suspend at this moment, we'll write an incorrect value to GMUX_PORT_SWITCH_DDC on resume. Also, on models with Thunderbolt the integrated GPU is unable to drive the external DP port(s), so we want to keep GMUX_PORT_SWITCH_EXTERNAL permanently switched to the discrete GPU on those machines. Consequently we can no longer assume that GMUX_PORT_SWITCH_DISPLAY represents the correct value for all 3 registers on suspend. Track the state of all 3 registers: Add gmux_read_switch_state() and gmux_write_switch_state(). Instead of reading the switch state on every suspend, read it once on driver initialization so that we know the current switch state all the time. (This allows us to use some optimizations and shortcuts, e.g. we can skip switching DDC if we know that it's already switched to the requested GPU.) Change the ->switchto callback to use gmux_write_switch_state(). Tested-by:
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Lukas Wunner authored
Originally by Seth Forshee <seth.forshee@canonical.com>, 2012-10-04: During graphics driver initialization it's useful to be able to mux only the DDC to the inactive client in order to read the EDID. Add a switch_ddc callback to allow capable handlers to provide this functionality, and add vga_switcheroo_switch_ddc() to allow DRM to mux only the DDC. Modified by Dave Airlie <airlied@gmail.com>, 2012-12-22: I can't figure out why I didn't like this, but I rewrote this [...] to lock/unlock the ddc lines [...]. I think I'd prefer something like that otherwise the interface got really ugly. Modified by Lukas Wunner <lukas@wunner.de>, 2015-04 - 2015-10: Change semantics of ->switch_ddc handler callback to return previous DDC owner. Original version tried to determine previous DDC owner with find_active_client() but this fails if the inactive client registers before the active client. Don't lock vgasr_mutex in _lock_ddc() / _unlock_ddc(), it can cause deadlocks because (a) during switch (with vgasr_mutex already held), GPU is woken and probes its outputs, tries to re-acquire vgasr_mutex to lock DDC lines; (b) Likewise during switch, GPU is suspended and calls cancel_delayed_work_sync() to stop output polling, if poll task is running at this moment we may wait forever for it to finish. Instead, lock mux_hw_lock when unregistering the handler because the only reason why we'd want to lock vgasr_mutex in _lock_ddc() / _unlock_ddc() is to block the handler from disappearing while DDC lines are switched. Also acquire mux_hw_lock in stage2 to avoid race condition where reading the EDID and switching happens simultaneously. Likewise on MIGD / MDIS commands and on runtime suspend. v2.1: Overhaul locking, squash commits (Daniel Vetter) v2.2: Readability improvements (Thierry Reding) v2.3: Overhaul locking once more v2.4: Retain semantics of ->switchto handler callback to switch all pins, including DDC (Daniel Vetter) v5: Rename ddc_lock to mux_hw_lock: Since we acquire this both when calling ->switch_ddc and ->switchto, it protects not just access to the DDC lines but to the mux in general. This is in line with the DRM convention to use low-level locks to avoid concurrent hw access (e.g. i2c, dp_aux) which are often called hw_lock (Daniel Vetter) Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88861 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61115Tested-by: -
Lukas Wunner authored
Allow handlers to declare their capabilities and allow clients to obtain that information. So far we have these use cases: * If the handler is able to switch DDC separately, clients need to probe EDID with drm_get_edid_switcheroo(). We should allow them to detect a capable handler to ensure this function only gets called when needed. * Likewise if the handler is unable to switch AUX separately, the active client needs to communicate link training parameters to the inactive client, which may then skip the AUX handshake and set up its output with these pre-calibrated values (DisplayPort specification v1.1a, section 2.5.3.3). Clients need a way to recognize such a situation. The flags for the radeon_atpx_handler and amdgpu_atpx_handler are initially set to 0, this can later on be amended with handler_flags |= VGA_SWITCHEROO_CAN_SWITCH_DDC; when a ->switch_ddc callback is added. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88861 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=61115Tested-by:
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Maarten Lankhorst authored
This allows iteration over encoders without requiring connection_mutex. Changes since v1: - Add a set_best_encoder helper function and update encoder_mask inside it. Changes since v2: - Relax the WARN_ON(!crtc), with explanation. - Call set_best_encoder when connector is moved between crtc's. - Add some paranoia to steal_encoder to prevent accidentally setting best_encoder to NULL. Signed-off-by:
Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by:
Gustavo Padovan <gustavo.padovan@collabora.co.uk> Signed-off-by:
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Maarten Lankhorst authored
While we steal the encoder away from the connector the connector may be updated to use a different encoder. Without this change if 2 connectors swap encoders one of them will end up without a crtc. Signed-off-by:
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Maarten Lankhorst authored
This should only be touched by drm_atomic_helper. Signed-off-by:
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Maarten Lankhorst authored
This is similar to the other drm_for_each_*_mask functions. Changes since v1: - Use for_each_if Signed-off-by:
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Maarten Lankhorst authored
This is useful for adding encoder_mask in crtc_state. Signed-off-by:
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Tiago Vignatti authored
Userspace is the one in charge of flush CPU by wrapping mmap with begin{,end}_cpu_access. v2: Remove LLC check cause we have dma-buf sync providers now. Also, fix return before transferring ownership when mmap fails. v3: Fix return values. v4: !obj->base.filp is user triggerable, so removed the WARN_ON. Reviewed-by:Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
Tiago Vignatti <tiago.vignatti@intel.com> Reviewed-by:
Stéphane Marchesin <marcheu@chromium.org> Signed-off-by:
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Tiago Vignatti authored
This function is meant to be used with dma-buf mmap, when finishing the CPU access of the mapped pointer. The error case should be rare to happen though, requiring the buffer become active during the sync period and for the end_cpu_access to be interrupted. So we use a uninterruptible mutex_lock to spit out when it ever happens. v2: disable interruption to make sure errors are reported. v3: update to the new end_cpu_access API. v7: use .write = false cause it doesn't need to know whether it's write. Reviewed-by:
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Tiago Vignatti authored
This patch removes range-based information used for optimizations in begin_cpu_access and end_cpu_access. We don't have any user nor implementation using range-based flush. It seems a consensus that if we ever want something like that again (or even more robust using 2D, 3D sub-range regions) we can use the upcoming dma-buf sync ioctl for such. Cc: Sumit Semwal <sumit.semwal@linaro.org> Cc: Daniel Vetter <daniel.vetter@intel.com> Signed-off-by:
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Daniel Thompson authored
Currently DRM_IOCTL_PRIME_HANDLE_TO_FD rejects all flags except (DRM|O)_CLOEXEC making it difficult (maybe impossible) for userspace to mmap() the resulting dma-buf even when this is supported by the DRM driver. It is trivial to relax the restriction and permit read/write access. This is safe because the flags are seldom touched by drm; mostly they are passed verbatim to dma_buf calls. v3 (Tiago): removed unused flags variable from drm_prime_handle_to_fd_ioctl. Reviewed-by:
Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by:
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Dave Airlie authored
Fixes: 0417d424 (drm/tegra: Stop cancelling page flip events) Signed-off-by:
Dave Airlie <airlied@redhat.com>
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git://anongit.freedesktop.org/drm-intelDave Airlie authored
First drm-misc pull req for 4.6. Big one is the drm_event cleanup, which is also prep work for adding android fence support to kms (Gustavo is planning to do that). Otherwise random small bits all over. * tag 'topic/drm-misc-2016-02-08' of git://anongit.freedesktop.org/drm-intel: (33 commits) gma500: clean up an excessive and confusing helper drm/gma500: remove helper function drm/vmwgfx: Nuke preclose hook drm/vc4: Nuke preclose hook drm/tilcdc: Nuke preclose hook drm/tegra: Stop cancelling page flip events drm/shmob: Nuke preclose hook drm/rcar: Nuke preclose hook drm/omap: Nuke close hooks drm/msm: Nuke preclose hooks drm/imx: Unconfuse preclose logic drm/exynos: Remove event cancelling from postclose drm/atmel: Nuke preclose drm/i915: Nuke intel_modeset_preclose drm: Nuke vblank event file cleanup code drm: Clean up pending events in the core drm/vblank: Use drm_event_reserve_init drm/vmwgfx: fix a NULL dereference drm/crtc-helper: Add caveat to disable_unused_functions doc drm/gma500: Remove empty preclose hook ...
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git://anongit.freedesktop.org/drm-intelDave Airlie authored
- support for v3 vbt dsi blocks (Jani) - improve mmio debug checks (Mika Kuoppala) - reorg the ddi port translation table entries and related code (Ville) - reorg gen8 interrupt handling for future platforms (Tvrtko) - refactor tile width/height computations for framebuffers (Ville) - kerneldoc integration for intel_pm.c (Jani) - move default context from engines to device-global dev_priv (Dave Gordon) - make seqno/irq ordering coherent with execlist (Chris) - decouple internal engine number from UABI (Chris&Tvrtko) - tons of small fixes all over, as usual * tag 'drm-intel-next-2016-01-24' of git://anongit.freedesktop.org/drm-intel: (148 commits) drm/i915: Update DRIVER_DATE to 20160124 drm/i915: Seal busy-ioctl uABI and prevent leaking of internal ids drm/i915: Decouple execbuf uAPI from internal implementation drm/i915: Use ordered seqno write interrupt generation on gen8+ execlists drm/i915: Limit the auto arming of mmio debugs on vlv/chv drm/i915: Tune down "GT register while GT waking disabled" message drm/i915: tidy up a few leftovers drm/i915: abolish separate per-ring default_context pointers drm/i915: simplify allocation of driver-internal requests drm/i915: Fix NULL plane->fb oops on SKL drm/i915: Do not put big intel_crtc_state on the stack Revert "drm/i915: Add two-stage ILK-style watermark programming (v10)" drm/i915: add DOC: headline to RC6 kernel-doc drm/i915: turn some bogus kernel-doc comments to normal comments drm/i915/sdvo: revert bogus kernel-doc comments to normal comments drm/i915/gen9: Correct max save/restore register count during gpu reset with GuC drm/i915: Demote user facing DMC firmware load failure message drm/i915: use hlist_for_each_entry drm/i915: skl_update_scaler() wants a rotation bitmask instead of bit number drm/i915: Don't reject primary plane windowing with color keying enabled on SKL+ ...
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- 08 Feb, 2016 17 commits
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Alan Cox authored
This is a left over from the great clean ups in the past. It's confusing as it returns an int, yet has one caller that never uses it. The caller already has all the right private variables local so the entire function can be replaced by a simple if call. Signed-off-by:
Alan Cox <alan@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20160129193731.8475.47809.stgit@localhost.localdomainAcked-by:
Patrik Jakobsson <patrik.r.jakobsson@gmail.com> Signed-off-by:
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Sudip Mukherjee authored
We were getting build warning about: drivers/gpu/drm/gma500/mdfld_dsi_output.c:407:2: warning: initialization from incompatible pointer type The callback to dpms was pointing to a helper function which had a return type of void, whereas the callback should point to a function which has a return type of int. On closer look it turned out that we do not need the helper function since if we call drm_helper_connector_dpms() directly, the first check that drm_helper_connector_dpms() does is: if (mode == connector->dpms) Signed-off-by:
Sudip Mukherjee <sudip@vectorindia.org> Link: http://patchwork.freedesktop.org/patch/msgid/1454393155-13142-1-git-send-email-sudipm.mukherjee@gmail.comAcked-by:
Daniel Vetter <daniel.vetter@intel.com>
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Daniel Vetter authored
Again since the drm core takes care of event unlinking/disarming this is now just needless code. v2: I've completely missed eaction->fpriv_head and all the related code. We need to nuke that too to avoid accidentally deferencing the freed-up vmwgfx-private fpriv. v3: Also remove vmw_fpriv->fence_events and unused variables I missed. Cc: Thomas Hellström <thellstrom@vmware.com> Acked-by:
Daniel Stone <daniels@collabora.com> Reviewed-by:
Alex Deucher <alexander.deucher@amd.com> Reviewed-by:
Thomas Hellstrom <thellstrom@vmware.com> Link: http://patchwork.freedesktop.org/patch/msgid/1452548477-15905-23-git-send-email-daniel.vetter@ffwll.chSigned-off-by:
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Daniel Vetter authored
Again since the drm core takes care of event unlinking/disarming this is now just needless code. v2: Fixup misplaced hunk. Cc: Eric Anholt <eric@anholt.net> Acked-by:
Eric Anholt <eric@anholt.net> Signed-off-by:
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Daniel Vetter authored
Again since the drm core takes care of event unlinking/disarming this is now just needless code. v2: Fixup misplaced hunks. Cc: Rob Clark <robdclark@gmail.com> Acked-by:
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Daniel Vetter authored
The core takes care of that now. v2: Fixup misplaced hunk. Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Terje Bergström <tbergstrom@nvidia.com> Acked-by:
Thierry Reding <treding@nvidia.com> Signed-off-by:
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Daniel Vetter authored
Again since the drm core takes care of event unlinking/disarming this is now just needless code. v2: Fixup misplaced hunk. Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Daniel Vetter authored
Again since the drm core takes care of event unlinking/disarming this is now just needless code. Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by:
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Daniel Vetter authored
Again since the core takes care of this we can remove them. While at it also remove the postclose hook, it's empty. v2: Laurent pointed me at even more code to delete. v3: Remove unused flags (Tomi). Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Tomi Valkeinen <tomi.valkeinen@ti.com> Acked-by:
Tomi Valkeinen <tomi.valkeinen@ti.com> Signed-off-by:
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Daniel Vetter authored
They only complete the page flip events to avoid oops when the drm file closes. The core takes care of that now and we can remove this code. Cc: Rob Clark <robdclark@gmail.com> Acked-by:
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Daniel Vetter authored
So this one is special, since it tries to prevent races when userspace crashes simply by disabling the vblank machinery. Well except that imx always has vblanks enabled, and the disable_vblank hook actually just tries to cancel a pending pageflip. Without any locking whatsoever. Of course this is wrong, since it'll result in the hw not actually displaying what drm thinks is the current frontbuffer. Well since the core takes care of the disappearing DRM fd now. So we can nuke all this confused code without ill side-effects. Someone else needs to audit the locking for ->newfb and ->page_flip_event and fix it up. Common approach is to reuse dev->event_lock for this. Cc: Sascha Hauer <s.hauer@pengutronix.de> Cc: Philipp Zabel <p.zabel@pengutronix.de> Acked-by:
Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by:
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Daniel Vetter authored
The core takes care of this now. And since kfree(NULL) is ok we can simplify the function even further now. Note: There's another spin on this patch, but for different reasons, in-flight already: http://www.spinics.net/lists/dri-devel/msg97922.html Cc: Inki Dae <inki.dae@samsung.com> Acked-by:
Inki Dae <inki.dae@samsung.com> Signed-off-by:
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Daniel Vetter authored
The only thing this did was cancle pending flip events, and the core takes care of that now. Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by:
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Daniel Vetter authored
Now that the drm core unlinks/disarms events there's no need to do so ourselves anymore. Nuke the code. Acked-by:
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Daniel Vetter authored
The core code now takes care of unlinking drm_events from the file in a generic way, so this code isn't needed any more. For those wondering where the drm_vblank_put went to: With the new logic events only get unlinked, but still exist. Hence any resources (like vblank counters) don't need to be released since the event user will still process the event normally. In this case this is the callsites of send_vblank_event, which of course already have a drm_vblank_put. Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by:
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Daniel Vetter authored
There's really no reason to not do so, instead of replicating this for every use-case and every driver. Now we can't just nuke the events, since that would still mean that all drm_event users would need to know when that has happened, since calling e.g. drm_send_event isn't allowed any more. Instead just unlink them from the file, and detect this case and handle it appropriately in all functions. v2: Adjust existing kerneldoc too. v3: Improve wording of the kerneldoc and split out vblank cleanup (Laurent). Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by:
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Daniel Vetter authored
Well we can't use that directly since that code must hold dev->event_lock already. Extract an _unlocked version. Embarrassingly I've totally forgotten about this patch and any kind of event-based vblank wait totally blew up, killing the kernel. v2: Pick the right base struct, someone didn't noticed that gcc was unhappy. No bug since the addresses at least matched (Daniel Stone) Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Daniel Stone <daniels@collabora.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by:
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- 07 Feb, 2016 4 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-socLinus Torvalds authored
Pull ARM SoC fixes from Olof Johansson: "The first real batch of fixes for this release cycle, so there are a few more than usual. Most of these are fixes and tweaks to board support (DT bugfixes, etc). I've also picked up a couple of small cleanups that seemed innocent enough that there was little reason to wait (const/ __initconst and Kconfig deps). Quite a bit of the changes on OMAP were due to fixes to no longer write to rodata from assembly when ARM_KERNMEM_PERMS was enabled, but there were also other fixes. Kirkwood had a bunch of gpio fixes for some boards. OMAP had RTC fixes on OMAP5, and Nomadik had changes to MMC parameters in DT. All in all, mostly the usual mix of various fixes" * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (46 commits) ARM: multi_v7_defconfig: enable DW_WATCHDOG ARM: nomadik: fix up SD/MMC DT settings ARM64: tegra: Add chosen node for tegra132 norrin ARM: realview: use "depends on" instead of "if" after prompt ARM: tango: use "depends on" instead of "if" after prompt ARM: tango: use const and __initconst for smp_operations ARM: realview: use const and __initconst for smp_operations bus: uniphier-system-bus: revive tristate prompt arm64: dts: Add missing DMA Abort interrupt to Juno bus: vexpress-config: Add missing of_node_put ARM: dts: am57xx: sbc-am57x: correct Eth PHY settings ARM: dts: am57xx: cl-som-am57x: fix CPSW EMAC pinmux ARM: dts: am57xx: sbc-am57x: fix UART3 pinmux ARM: dts: am57xx: cl-som-am57x: update SPI Flash frequency ARM: dts: am57xx: cl-som-am57x: set HOST mode for USB2 ARM: dts: am57xx: sbc-am57x: fix SB-SOM EEPROM I2C address ARM: dts: LogicPD Torpedo: Revert Duplicative Entries ARM: dts: am437x: pixcir_tangoc: use correct flags for irq types ARM: dts: am4372: fix irq type for arm twd and global timer ARM: dts: at91: sama5d4 xplained: fix phy0 IRQ type ...
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git://git.linaro.org/landing-teams/working/fujitsu/integrationLinus Torvalds authored
Pull mailbox fixes from Jassi Brar: - fix getting element from the pcc-channels array by simply indexing into it - prevent building mailbox-test driver for archs that don't have IOMEM * 'mailbox-devel' of git://git.linaro.org/landing-teams/working/fujitsu/integration: mailbox: Fix dependencies for !HAS_IOMEM archs mailbox: pcc: fix channel calculation in get_pcc_channel()
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB fixes from Greg KH: "Here are some USB fixes for 4.5-rc3. The usual, xhci fixes for reported issues, combined with some small gadget driver fixes, and a MAINTAINERS file update. All have been in linux-next with no reported issues" * tag 'usb-4.5-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: xhci: harden xhci_find_next_ext_cap against device removal xhci: Fix list corruption in urb dequeue at host removal usb: host: xhci-plat: fix NULL pointer in probe for device tree case usb: xhci-mtk: fix AHB bus hang up caused by roothubs polling usb: xhci-mtk: fix bpkts value of LS/HS periodic eps not behind TT usb: xhci: apply XHCI_PME_STUCK_QUIRK to Intel Broxton-M platforms usb: xhci: set SSIC port unused only if xhci_suspend succeeds usb: xhci: add a quirk bit for ssic port unused usb: xhci: handle both SSIC ports in PME stuck quirk usb: dwc3: gadget: set the OTG flag in dwc3 gadget driver. Revert "xhci: don't finish a TD if we get a short-transfer event mid TD" MAINTAINERS: fix my email address usb: dwc2: Fix probe problem on bcm2835 Revert "usb: dwc2: Move reset into dwc2_get_hwparams()" usb: musb: ux500: Fix NULL pointer dereference at system PM usb: phy: mxs: declare variable with initialized value usb: phy: msm: fix error handling in probe.
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