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2018-09-05drm/vkms: Fix race condition around accessing frame numberHaneen Mohammed3-6/+54
crtc_state is accessed by both vblank_handle() and the ordered work_struct handle vkms_crc_work_handle() to retrieve and or update the frame number for computed CRC. Since work_struct can fail, add frame_end to account for missing frame numbers. Use (frame_[start/end]) for synchronization between hrtimer callback and ordered work_struct handle. This patch passes the following subtests from igt kms_pipe_crc_basic test: bad-source, read-crc-pipe-A, read-crc-pipe-A-frame-sequence, nonblocking-crc-pipe-A, nonblocking-crc-pipe-A-frame-sequence Signed-off-by: Haneen Mohammed <hamohammed.sa@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180903211743.GA2773@haneenDRM
2018-09-05drm/rockchip: vop: add rk3188 vop definitionsHeiko Stuebner3-0/+115
The rk3188 has 2 vops not using iommus which only output directly to a rgb interface per vop. So all other output modes like hdmi are provided by external brige chips. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Sandy Huang <hjc@rock-chips.com> Acked-by: Rob Herring <robh@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180830110937.1739-1-heiko@sntech.de
2018-09-05drm/rockchip: vop: Add directly output rgb feature for px30Sandy Huang1-0/+2
Add this feature bit indicate px30 vop can directly output parallel or serial rgb data. Signed-off-by: Sandy Huang <hjc@rock-chips.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20180830211207.10480-4-heiko@sntech.de
2018-09-05drm/rockchip: Add support for Rockchip Soc RGB output interfaceSandy Huang6-0/+222
Some Rockchip CRTCs, like rv1108 and px30, can directly output parallel and serial RGB data to panel or conversion chip. So add a feature-bit for vops to mark the ability for these direct outputs and add an internal encoder in that case, that can attach to bridge chipsor panels. Changes in v7: 1. forget to delete rockchip_rgb_driver and delete it. Changes in v6: 1. Update according to Heiko Stuebner' implemention, rgb output is part of vop's feature, should not register as a independent driver. Changes in v5: 1. add SPDX-License-Identifier tag Changes in v4: 1. add support px30; Changes in v3: 1. update for rgb-mode move to panel node. Changes in v2: 1. add error log when probe failed; 2. update name_to_output_mode() according to sean's suggest; 3. Fix uninitialized use of ret. Signed-off-by: Sandy Huang <hjc@rock-chips.com> Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20180830211207.10480-3-heiko@sntech.de
2018-09-05drm/rockchip: add function to check if endpoint is a subdriverHeiko Stuebner2-0/+49
To be able to have both internal subdrivers and external bridge drivers as output endpoints of vops, add a function to be able to distinguish these. changes in v8: - improved function documentation - better error handling - put calls for node and pdev references changes in v6: - added function to check subdriver vs. bridge Signed-off-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Sandy Huang <hjc@rock-chips.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180830211207.10480-2-heiko@sntech.de
2018-09-05drm/sun4i: Add support for HDMI voltage regulatorJernej Skrabec2-1/+18
Some boards have HDMI VCC pin connected to voltage regulator which may not be turned on by default. Add support for such boards by adding voltage regulator handling code to HDMI driver. Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> [Icenowy: change supply name to "hvcc"] Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180904044053.15425-11-icenowy@aosc.io
2018-09-05dt-bindings: sun4i-drm: add HDMI VCC supply property for sun8i-dw-hdmiIcenowy Zheng1-0/+3
Allwiner SoCs with DesignWare HDMI controller all come with a "HVCC" pin, which is the VCC of HDMI part. Add a supply property to specify HVCC's regulator in the device tree. Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180904044053.15425-10-icenowy@aosc.io
2018-09-05dt-bindings: display: Add compatible for A64 HDMIJagan Teki1-0/+1
The HDMI controller on Allwinner A64 is similar on the one on H3/H5/A83T (although the PHY is different with A83T). Add A64 compatible and append A83T compatible as fallback. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Rob Herring <robh@kernel.org> [Icenowy: refactor commit log] Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180904044053.15425-7-icenowy@aosc.io
2018-09-05drm/sun4i: Add support for A64 display engineJagan Teki1-0/+1
Display Engine(DE2) in Allwinner A64 has two mixers and tcons. The routing for mixer0 is through tcon0 and connected to LVDS/RGB/MIPI-DSI controller. The routing for mixer1 is through tcon1 and connected to HDMI. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180904044053.15425-6-icenowy@aosc.io
2018-09-05drm/sun4i: Add support for A64 mixersJagan Teki1-0/+24
Mixers in Allwinner have similar capabilities as others SoCs with DE2. Add support for them. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> [Icenowy: Add mixer1] Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Reviewed-by: Jernej Skrabec <jernej.skrabec@siol.net> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180904044053.15425-5-icenowy@aosc.io
2018-09-05dt-bindings: display: Add compatible for A64 DE2 display pipelineJagan Teki1-0/+5
Allwinner A64 has a DE2 display pipeline. The TCONs are similar to the ones in A83T, but the mixers are new (similar to the later R40 SoC). This patch adds dt-binding documentation for A64 DE2 display pipeline. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Rob Herring <robh@kernel.org> [Icenowy: Refactor and also cover TCON1] Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180904044053.15425-4-icenowy@aosc.io
2018-09-05dma-buf/udmabuf: Fix NULL pointer dereference in udmabuf_createGustavo A. R. Silva1-1/+2
There is a potential execution path in which pointer memfd is NULL when passed as argument to fput(), hence there is a NULL pointer dereference in fput(). Fix this by null checking *memfd* before calling fput(). Addresses-Coverity-ID: 1473174 ("Explicit null dereferenced") Fixes: fbb0de795078 ("Add udmabuf misc device") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180904190749.GA9308@embeddedor.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-09-05drm/virtio: add iommu support.Gerd Hoffmann2-9/+38
Use the dma mapping api and properly add iommu mappings for objects, unless virtio is in iommu quirk mode. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180829122026.27012-3-kraxel@redhat.com
2018-09-05drm/virtio: add virtio_gpu_object_detach() functionGerd Hoffmann4-7/+12
The new function balances virtio_gpu_object_attach(). Also make virtio_gpu_cmd_resource_inval_backing() static and switch call sites to the new virtio_gpu_object_attach() function. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180829122026.27012-2-kraxel@redhat.com
2018-09-05drm/virtio: track virtual output stateGerd Hoffmann3-1/+6
Track whenever an virtual output (crtc) is enabled or disabled. On atomic updates check for both framebuffer being present and crtc being enabled to figure whenever the output is active or not. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Dave Airlie <airlied@redhat.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180813152855.12863-1-kraxel@redhat.com
2018-09-05qxl: fix null-pointer crash during suspendPeter Wu1-21/+5
"crtc->helper_private" is not initialized by the QXL driver and thus the "crtc_funcs->disable" call would crash (resulting in suspend failure). Fix this by converting the suspend/resume functions to use the drm_mode_config_helper_* helpers. Tested system sleep with QEMU 3.0 using "echo mem > /sys/power/state". During suspend the following message is visible from QEMU: spice/server/display-channel.c:2425:display_channel_validate_surface: canvas address is 0x7fd05da68308 for 0 (and is NULL) spice/server/display-channel.c:2426:display_channel_validate_surface: failed on 0 This seems to be triggered by QXL_IO_NOTIFY_CMD after QXL_IO_DESTROY_PRIMARY_ASYNC, but aside from the warning things still seem to work (tested with both the GTK and -spice options). Signed-off-by: Peter Wu <peter@lekensteyn.nl> Link: http://patchwork.freedesktop.org/patch/msgid/20180904202747.14968-1-peter@lekensteyn.nl Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-09-04drm: Remove "protection" around drm_vma_offset_manager_destroy()Chris Wilson1-3/+0
Using a spinlock to serialize the destroy function, within the destroy function itself does not prevent the buggy driver from shooting themselves in the foot - either way they still have a use-after-free issue. Reported-by: Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Liviu Dudau <Liviu.Dudau@arm.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180903093155.3825-1-chris@chris-wilson.co.uk
2018-09-04drm: Suppress user controlled spam for invalid drm_wait_vblank_ioctlChris Wilson1-1/+1
The ioctl arguments are under control of the user and as such we should resist any temptation to flood the kernel logs with their errors. Relegate the DRM_ERROR to a DRM_DEBUG so the user has to opt into hearing of their own mistakes. (One day we will have a small ringbuffer attached to the task, so that the concerned process can inspect its own debug info for EINVAL without them being hitting syslog at all.) Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180904115719.24525-1-chris@chris-wilson.co.uk
2018-09-04Document/gpu: Use new vm_fault_t typeSouptick Joarder1-1/+1
We have introduce new return type vm_fault_t for fault handler. Update the document for the same. Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180904041505.GA2712@jordon-HP-15-Notebook-PC
2018-09-03drm/tegra: kick out simplefbMichał Mirosław1-0/+4
Kick out firmware fb when loading Tegra driver. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/b5c3972e5774d0d1f8887054a993bbc54e9dbe2a.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03drm/sun4i: use simpler remove_conflicting_framebuffers(NULL)Michał Mirosław1-17/+1
Use remove_conflicting_framebuffers(NULL) instead of duplicating it. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/7d6d5bc4deac322b1351533c989cb3583e91be49.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03drm/vc4: use simpler remove_conflicting_framebuffers(NULL)Michał Mirosław1-19/+1
Use remove_conflicting_framebuffers(NULL) instead of open-coding it. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Eric Anholt <eric@anholt.net> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/be7e6396e6e7159695a5bccc109c6ab49a51e0d8.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03drm/virtio: use simpler remove_conflicting_pci_framebuffers()Michał Mirosław1-21/+3
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/25f89daf6217da98a52d41c4ad62a78272bb0cf6.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03drm/mgag200: use simpler remove_conflicting_pci_framebuffers()Michał Mirosław2-29/+1
Remove duplicated call, while at it. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/90fc954f90de44157d6cc1c782147db6252c71e4.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03drm/radeon: use simpler remove_conflicting_pci_framebuffers()Michał Mirosław1-22/+1
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/b61a2e458b6a2964039693d724cc75b4fcfb3ddb.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03drm/bochs: use simpler remove_conflicting_pci_framebuffers()Michał Mirosław1-17/+1
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/b5fce8eba7472e5ba8e18c2624938be6c5aa6ebb.1535810304.git.mirq-linux@rere.qmqm.pl Link: https://patchwork.freedesktop.org/patch/msgid/a9a4691b6eea789664edd6b85a85b7990953a222.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03drm/cirrus: use simpler remove_conflicting_pci_framebuffers()Michał Mirosław1-22/+1
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/a9a4691b6eea789664edd6b85a85b7990953a222.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03drm/amdgpu: use simpler remove_conflicting_pci_framebuffers()Michał Mirosław1-23/+1
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Alex Deucher <alexander.deucher@amd.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/fe59ab587ef4ef799b525fcc03d87800c5dc26d9.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03fbdev: add remove_conflicting_pci_framebuffers()Michał Mirosław3-0/+49
Almost all PCI drivers using remove_conflicting_framebuffers() wrap it with the same code. v2: add kerneldoc for DRM helper v3: propagate remove_conflicting_framebuffers() return value + move kerneldoc to where function is implemented Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/7db1c278276de420eb45a1b71d06b5eb6bbd49ef.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03fbdev: add kerneldoc do remove_conflicting_framebuffers()Michał Mirosław1-0/+10
Document remove_conflicting_framebuffers() behaviour. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/283fef19815b991700b56119d8d5874a2a8da44e.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03fbdev: allow apertures == NULL in remove_conflicting_framebuffers()Michał Mirosław1-0/+14
Interpret (otherwise-invalid) NULL apertures argument to mean all-memory range. This will allow to remove several duplicates of this code from drivers in following patches. Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/b5fed539fe569035139c8594c23effd8c39f12ca.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03fbdev: show fbdev number for debuggingMichał Mirosław1-2/+2
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/ef584ecd8642e8b1a04f28d6d9c1864b5aa507bb.1535810304.git.mirq-linux@rere.qmqm.pl
2018-09-03Add udmabuf misc deviceGerd Hoffmann8-0/+439
A driver to let userspace turn memfd regions into dma-bufs. Use case: Allows qemu create dmabufs for the vga framebuffer or virtio-gpu ressources. Then they can be passed around to display those guest things on the host. To spice client for classic full framebuffer display, and hopefully some day to wayland server for seamless guest window display. qemu test branch: https://git.kraxel.org/cgit/qemu/log/?h=sirius/udmabuf Cc: David Airlie <airlied@linux.ie> Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Daniel Vetter <daniel@ffwll.ch> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180827093444.23623-1-kraxel@redhat.com
2018-08-31drm: Describe pixel_blend_mode in drm_plane_stateSean Paul1-0/+7
Adds docs for pixel_blend_mode in drm_plane_state. Fixes the warning found by kbuild test robot: htmldocs: include/drm/drm_plane.h:189: warning: Function parameter or member 'pixel_blend_mode' not described in 'drm_plane_state' Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Lowry Li <lowry.li@arm.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180831150934.202332-1-sean@poorly.run
2018-08-31drm/amdgpu: add DisplayPort CEC-Tunneling-over-AUX supportHans Verkuil2-1/+10
Add DisplayPort CEC-Tunneling-over-AUX support to amdgpu. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/de9586bb-151e-bae9-b8e3-14db107a60df@xs4all.nl
2018-08-31drm/nouveau: add DisplayPort CEC-Tunneling-over-AUX supportHans Verkuil1-2/+15
Add DisplayPort CEC-Tunneling-over-AUX support to nouveau. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/5c0b907d-0bf2-7b80-b4b6-cbde78b03f0d@xs4all.nl
2018-08-31drm_dp_mst_topology: fix broken drm_dp_sideband_parse_remote_dpcd_read()Hans Verkuil1-0/+1
When parsing the reply of a DP_REMOTE_DPCD_READ DPCD command the result is wrong due to a missing idx increment. This was never noticed since DP_REMOTE_DPCD_READ is currently not used, but if you enable it, then it is all wrong. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/e72ddac2-1dc0-100a-d816-9ac98ac009dd@xs4all.nl
2018-08-31drm_dp_cec: add note about good MegaChips 2900 CEC supportHans Verkuil1-1/+3
A big problem with DP CEC-Tunneling-over-AUX is that it is tricky to find adapters with a chipset that supports this AND where the manufacturer actually connected the HDMI CEC line to the chipset. Add a mention of the MegaChips 2900 chipset which seems to support this feature well. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180827075820.41109-3-hverkuil@xs4all.nl
2018-08-31drm_dp_cec: check that aux has a transfer functionHans Verkuil1-0/+14
If aux->transfer == NULL, then just return without doing anything. In that case the function is likely called for a non-(e)DP connector. This never happened for the i915 driver, but the nouveau and amdgpu drivers need this check. The alternative would be to add this check in those drivers before every drm_dp_cec call, but it makes sense to check it in the drm_dp_cec functions to prevent a kernel oops. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Reviewed-by: Lyude Paul <lyude@redhat.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180827075820.41109-2-hverkuil@xs4all.nl
2018-08-30drm/virtio: fix bounds check in virtio_gpu_cmd_get_capset()Dan Carpenter1-2/+3
This doesn't affect runtime because in the current code "idx" is always valid. First, we read from "vgdev->capsets[idx].max_size" before checking whether "idx" is within bounds. And secondly the bounds check is off by one so we could end up reading one element beyond the end of the vgdev->capsets[] array. Fixes: 62fb7a5e1096 ("virtio-gpu: add 3d/virgl support") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180704094250.m7sgvvzg3dhcvv3h@kili.mountain Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-08-30drm/virtio: Replace ttm_bo_unref with ttm_bo_putThomas Zimmermann1-3/+2
The function ttm_bo_put releases a reference to a TTM buffer object. The function's name is more aligned to the Linux kernel convention of naming ref-counting function _get and _put. A call to ttm_bo_unref takes the address of the TTM BO object's pointer and clears the pointer's value to NULL. This is not necessary in most cases and sometimes even worked around by the calling code. A call to ttm_bo_put only releases the reference without clearing the pointer. The current behaviour of cleaning the pointer is kept in the calling code, but should be removed if not required in a later patch. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: http://patchwork.freedesktop.org/patch/msgid/20180731062127.10131-3-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-08-30drm/virtio: Replace ttm_bo_reference with ttm_bo_getThomas Zimmermann1-1/+1
The function ttm_bo_get acquires a reference on a TTM buffer object. The function's name is more aligned to the Linux kernel convention of naming ref-counting function _get and _put. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: http://patchwork.freedesktop.org/patch/msgid/20180731062127.10131-2-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-08-30drm/qxl: Replace ttm_bo_unref with ttm_bo_putThomas Zimmermann1-1/+1
The function ttm_bo_put releases a reference to a TTM buffer object. The function's name is more aligned to the Linux kernel convention of naming ref-counting function _get and _put. A call to ttm_bo_unref takes the address of the TTM BO object's pointer and clears the pointer's value to NULL. This is not necessary in most cases and sometimes even worked around by the calling code. A call to ttm_bo_put only releases the reference without clearing the pointer. The current behaviour of cleaning the pointer is kept in the calling code, but should be removed if not required in a later patch. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: http://patchwork.freedesktop.org/patch/msgid/20180731063559.11629-1-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-08-30drm/cirrus: Replace ttm_bo_unref with ttm_bo_putThomas Zimmermann1-1/+1
The function ttm_bo_put releases a reference to a TTM buffer object. The function's name is more aligned to the Linux kernel convention of naming ref-counting function _get and _put. A call to ttm_bo_unref takes the address of the TTM BO object's pointer and clears the pointer's value to NULL. This is not necessary in most cases and sometimes even worked around by the calling code. A call to ttm_bo_put only releases the reference without clearing the pointer. The current behaviour of cleaning the pointer is kept in the calling code, but should be removed if not required in a later patch. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: http://patchwork.freedesktop.org/patch/msgid/20180731063128.11041-1-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-08-30drm/bochs: Replace ttm_bo_unref with ttm_bo_putThomas Zimmermann1-1/+1
The function ttm_bo_put releases a reference to a TTM buffer object. The function's name is more aligned to the Linux kernel convention of naming ref-counting function _get and _put. A call to ttm_bo_unref takes the address of the TTM BO object's pointer and clears the pointer's value to NULL. This is not necessary in most cases and sometimes even worked around by the calling code. A call to ttm_bo_put only releases the reference without clearing the pointer. The current behaviour of cleaning the pointer is kept in the calling code, but should be removed if not required in a later patch. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Link: http://patchwork.freedesktop.org/patch/msgid/20180731062851.10812-1-tzimmermann@suse.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-08-29drm/rockchip: vop: fix some register define error for px30Sandy Huang1-8/+6
1. interrupt register define error lead to enable interrupt failed; 2. px30 unsupport hdmi output; 3. there are some hardware designed bug, we must swap win2 gate and enable offset, otherwise will appear vop iommu pagefault. Signed-off-by: Sandy Huang <hjc@rock-chips.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/1535445150-40296-1-git-send-email-hjc@rock-chips.com
2018-08-29drm/rockchip: Use struct_size() in devm_kzalloc()Gustavo A. R. Silva1-3/+3
One of the more common cases of allocation size calculations is finding the size of a structure that has a zero-sized array at the end, along with memory for some number of elements for that array. For example: struct foo { int stuff; void *entry[]; }; instance = devm_kzalloc(dev, sizeof(struct foo) + sizeof(void *) * count, GFP_KERNEL); or, like in this particular case: size = sizeof(struct foo) + sizeof(void *) * count; instance = devm_kzalloc(dev, size, GFP_KERNEL); Instead of leaving these open-coded and prone to type mistakes, we can now use the new struct_size() helper: instance = devm_kzalloc(dev, struct_size(instance, entry, count), GFP_KERNEL); This issue was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/20180826184712.GA9330@embeddedor.com
2018-08-29drm/rockchip: fix coding style and incorrect descriptionSandy Huang1-7/+7
Align with other drivers, tab + 2 space key for description. and edp/hdmi/dsi can be used on both rk3288 and rk3399. Signed-off-by: Sandy Huang <hjc@rock-chips.com> Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de> Link: https://patchwork.freedesktop.org/patch/msgid/1535442295-4007-1-git-send-email-hjc@rock-chips.com
2018-08-27drm/atmel-hlcdc: support bus-width (12/16/18/24) in endpoint nodesPeter Rosin3-28/+120
This beats the heuristic that the connector is involved in what format should be output for cases where this fails. E.g. if there is a bridge that changes format between the encoder and the connector, or if some of the RGB pins between the lcd controller and the encoder are not routed on the PCB. This is critical for the devices that have the "conflicting output formats" issue (SAM9N12, SAM9X5, SAMA5D3), since the most significant RGB bits move around depending on the selected output mode. For devices that do not have the "conflicting output formats" issue (SAMA5D2, SAMA5D4), this is completely irrelevant. Acked-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180825085620.10566-5-peda@axentia.se
2018-08-27drm/atmel-hlcdc: always iterate over the first 4 output endpointsPeter Rosin1-2/+13
This enables more flexible devicetrees. You can e.g. have two output nodes where one is not enabled, without the ordering affecting things. Prior to this patch the active nodes had to have endpoint id zero and upwards consecutively. Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180825085620.10566-4-peda@axentia.se
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