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2016-07-13drm: Resurrect atomic rmfb codeDaniel Vetter3-0/+73
This was somehow lost between v3 and the merged version in Maarten's patch merged as: commit f2d580b9a8149735cbc4b59c4a8df60173658140 Author: Maarten Lankhorst <[email protected]> Date: Wed May 4 14:38:26 2016 +0200 drm/core: Do not preserve framebuffer on rmfb, v4. Actual code copied from Maarten's patch, but with the slight change to just use dev->mode_config.funcs->atomic_commit to decide whether to use the atomic path or not. Cc: Maarten Lankhorst <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Reviewed-by: Maarten Lankhorst <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/imx: parallel-display: check return code from of_get_drm_display_mode()Lothar Waßmann1-1/+7
of_get_drm_display_mode() may fail. Check its return code and bail out on error. Signed-off-by: Lothar Waßmann <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12gpu: ipu-v3: ipu-dc: don't bug out on invalid bus_formatPhilipp Zabel1-3/+3
If imx-drm is combined with a bridge or panel that requests an unsupported format, warn and use a default mapping instead of hanging the machine. The worst that can happen here are wrong colors. Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: imx-tve: fix the error messageFabio Estevam1-2/+2
The error message should say "hsync" instead of "vsync" as we have just checked the "fsl,hsync-pin" property. Signed-off-by: Fabio Estevam <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: imx-tve: remove unneeded 'or' operationFabio Estevam1-1/+1
There is no need for doing an extra 'or' operation when reading the return value from of_property_read_u32(). Just do a simple read instead. Signed-off-by: Fabio Estevam <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: imx-tve: check the value returned by regulator_set_voltage()Fabio Estevam1-1/+3
regulator_set_voltage() may fail, so we better check its return value and propagate it in the case of error. Signed-off-by: Fabio Estevam <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: imx-ldb: check return code on panel attachLucas Stach1-2/+6
Check the return code on panel attach. Avoids a kernel crash later on if the attach failed. Signed-off-by: Lucas Stach <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: turn remaining container_of macros into inline functionsPhilipp Zabel5-8/+23
This allows the compiler to do type checking. Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: store internal bus configuration in crtc statePhilipp Zabel6-107/+229
The internal bus configuration is imx-drm specific crtc state. Store it in imx_crtc_state and let the encoder atomic_check callbacks determine bus_flags, bus_format and the sync pins, possibly taking into account the mode and the connector display info. The custom imx_drm_encoder structure can be replaced again with drm_encoder. Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: remove empty mode_set encoder callbacksPhilipp Zabel2-14/+0
With atomic modeset support, these callbacks are optional. Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: atomic phase 3 step 3: Advertise DRIVER_ATOMICLiu Ying1-1/+2
With all the beforehand phases and steps done, we can adverstise DRIVER_ATOMIC. Signed-off-by: Liu Ying <[email protected]> Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: atomic phase 3 step 2: Legacy callback fixupsLiu Ying5-82/+27
Now that we can use atomic configurations, all the legacy callbacks of CRTCs, encoders and connectors can be switched to the atomic version. For the imx-ldb driver, there is a clock parent setting mismatch bewteen ->enable and ->disable after the switch, so a fixup is added. For the imx-tve driver, since the encoder's callback ->dpms is replaced by ->disable, we need to move the setting for the IPU_CLK_EN bit(in register TVE_COM_CONF_REG) from ->enable/->disable to ->mode_set, otherwise, the relevant CRTC cannot be disabled correctly with a warning on DC stop timeout. Signed-off-by: Liu Ying <[email protected]> Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/bridge: dw-hdmi: Remove the legacy drm_connector_funcs structureLiu Ying1-19/+3
There is no one using the legacy drm_connector_funcs structure since the imx-drm has been converted to atomic, so we may remove it. Signed-off-by: Liu Ying <[email protected]> Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: atomic phase 3 step 1: Use atomic configurationLiu Ying4-308/+114
Replacing drm_crtc_helper_set_config() by drm_atomic_helper_set_config() and converting the suspend/resume operations to atomic make us be able to use atomic configurations. All of these allow us to remove the crtc_funcs->mode_set callback as it is no longer used. Also, change the plane_funcs->update/disable_plane callbacks from the transitional version to the atomic version. Furthermore, switching to the pure atomic version of set_config callback means that we may implement CRTC/plane atomic checks by using the new CRTC/plane states instead of the legacy ones and we may remove the private ipu_crtc->enabled state which was left there for the transitional atomic helpers in phase 1. Page flip is also switched to the atomic version. Last, the legacy function drm_helper_disable_unused_functions() is removed from ->load in order not to confuse the atomic driver. Signed-off-by: Liu Ying <[email protected]> Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: Remove encoders' ->prepare callbacksLiu Ying7-203/+142
The main task of imx encoders' ->prepare callbacks is to set bus_format, bus_flags, di_vsync_pin and di_hsync_pin. We may create a structure named imx_encoder to cache them. The atomic encoder callback ->disable may replace ->prepare later, so let's remove ->prepare. Signed-off-by: Liu Ying <[email protected]> Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: atomic phase 2 step 2: Track plane_state->fb correctly in ->page_flipLiu Ying1-0/+4
Use drm_atomic_set_fb_for_plane() in the legacy ->page_flip path to track the pointer plane_state->fb correctly. Signed-off-by: Liu Ying <[email protected]> Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: atomic phase 2 step 1: Wire up state ->reset, ->duplicate and ->destroyLiu Ying7-0/+25
Wire up CRTCs', planes' and connectors' ->reset, ->duplicate and ->destroy state hooks to use the default implementations from the atomic helper library. The helpers track each DRM object state. Signed-off-by: Liu Ying <[email protected]> Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: atomic phase 1: Use transitional atomic CRTC and plane helpersLiu Ying5-322/+410
Use the drm_plane_helper_update/disable() and drm_helper_crtc_mode_set() transitional atomic helpers. The crtc->mode_set_nofb callback is added so that the primary plane is no longer tied to the CRTC. Check/update logics are separated to make sure crtc->mode_set_nofb and plane->atomic_update are always successful. Also, some necessary logics are tweaked for a smooth transition. Signed-off-by: Liu Ying <[email protected]> Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12gpu: ipu-v3: ipu-dmfc: Use static DMFC FIFO allocation mechanismLiu Ying3-235/+7
For all video modes we support currently, we always get 2 slots for a plane by using the current existing dynamic DMFC FIFO allocation mechanism. So, let's change to use the static one to simplify the code. This also makes it easier to implement the atomic mode setting as we don't need to handle allocation failure cases then. Signed-off-by: Liu Ying <[email protected]> Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/imx: ipuv3 plane: Check different types of plane separatelyLiu Ying1-29/+38
The IPUv3 primary plane doesn't support partial off screen. So, this patch separates plane check logics for primary plane and overlay plane and adds more limitations on the primary plane. Signed-off-by: Liu Ying <[email protected]> Acked-by: Daniel Vetter <[email protected]> Signed-off-by: Philipp Zabel <[email protected]>
2016-07-12drm/vgem: Use PAGE_KERNEL in place of x86-specific PAGE_KERNEL_IOChris Wilson1-1/+1
Since PAGE_KERNEL_IO is specific to x86 and equivalent to PAGE_KERNEL for our wrapping with pgprot_writecombine(), just use the common define. drivers/gpu/drm/vgem/vgem_drv.c: In function 'vgem_prime_vmap': >> drivers/gpu/drm/vgem/vgem_drv.c:238:53: error: 'PAGE_KERNEL_IO' undeclared (first use in this function) addr = vmap(pages, n_pages, 0, pgprot_writecombine(PAGE_KERNEL_IO)); Reported-by: 0day Fixes: e6f15b763ab2 ("drm/vgem: Enable dmabuf interface for export") Signed-off-by: Chris Wilson <[email protected]> Cc: Matthew Auld <[email protected]> Cc: Daniel Vetter <[email protected]> Reviewed-by: Matthew Auld <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12qxl: silence uninitialized variable warningDan Carpenter1-2/+1
GCC doesn't complain about this but my static checker does. We're passing "drawable" before initializing it. It's not actually used so it's harmless and I just removed it. Signed-off-by: Dan Carpenter <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/20160711084716.GB31411@mwanda
2016-07-12qxl: check for kmap failuresDan Carpenter1-0/+2
If kmap fails, it leads to memory corruption. Fixes: f64122c1f6ad ('drm: add new QXL driver. (v1.4)') Signed-off-by: Dan Carpenter <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/20160711084633.GA31411@mwanda
2016-07-12vga_switcheroo: Sphinxify docsLukas Wunner3-22/+18
Fix up formatting glitches remaining after the automatic rst conversion. Cc: Jonathan Corbet <[email protected]> Cc: Jani Nikula <[email protected]> Signed-off-by: Lukas Wunner <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/3a369602ae35fdbf5e4a12f7e172088c89fa27bb.1468225027.git.lukas@wunner.de
2016-07-12drm: Restore double clflush on the last partial cachelineChris Wilson1-0/+1
This effectively reverts commit afcd950cafea6e27b739fe7772cbbeed37d05b8b Author: Chris Wilson <[email protected]> Date: Wed Jun 10 15:58:01 2015 +0100 drm: Avoid the double clflush on the last cache line in drm_clflush_virt_range() as we have observed issues with serialisation of the clflush operations on Baytrail+ Atoms with partial updates. Applying the double flush on the last cacheline forces that clflush to be ordered with respect to the previous clflush, and the mfence then protects against prefetches crossing the clflush boundary. The same issue can be demonstrated in userspace with igt/gem_exec_flush. Fixes: afcd950cafea6 (drm: Avoid the double clflush on the last cache...) Testcase: igt/gem_concurrent_blit Testcase: igt/gem_partial_pread_pwrite Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92845 Signed-off-by: Chris Wilson <[email protected]> Cc: [email protected] Cc: Akash Goel <[email protected]> Cc: Imre Deak <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Jason Ekstrand <[email protected]> Cc: [email protected] Reviewed-by: Mika Kuoppala <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12gpu: drm: rockchip_drm_drv: add missing of_node_put after calling ↵Peter Chen1-0/+1
of_parse_phandle of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using. Cc: Mark Yao <[email protected]> Cc: Heiko Stuebner <[email protected]> Signed-off-by: Peter Chen <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12gpu: drm: sti_vtg: add missing of_node_put after calling of_parse_phandlePeter Chen1-0/+1
of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using. Cc: Benjamin Gaignard <[email protected]> Cc: Vincent Abriou <[email protected]> Signed-off-by: Peter Chen <[email protected]> Acked-by: Benjamin Gaignard <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12gpu: drm: sti_hqvdp: add missing of_node_put after calling of_parse_phandlePeter Chen1-0/+1
of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using. Cc: Benjamin Gaignard <[email protected]> Cc: Vincent Abriou <[email protected]> Signed-off-by: Peter Chen <[email protected]> Acked-by: Benjamin Gaignard <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12gpu: drm: sti_vdo: add missing of_node_put after calling of_parse_phandlePeter Chen1-0/+1
of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using. Cc: Benjamin Gaignard <[email protected]> Cc: Vincent Abriou <[email protected]> Signed-off-by: Peter Chen <[email protected]> Acked-by: Benjamin Gaignard <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12gpu: drm: sti_compositor: add missing of_node_put after calling of_parse_phandlePeter Chen1-0/+2
of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using. Cc: Benjamin Gaignard <[email protected]> Cc: Vincent Abriou <[email protected]> Signed-off-by: Peter Chen <[email protected]> Acked-by: Benjamin Gaignard <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/tilcdc: use drm_crtc_handle_vblank()Gustavo Padovan1-1/+1
Remove legacy usage of drm_handle_vblank() Signed-off-by: Gustavo Padovan <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/rcar-du: use drm_crtc_handle_vblank()Gustavo Padovan1-1/+1
Remove legacy usage of drm_handle_vblank() Signed-off-by: Gustavo Padovan <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/nouveau: use drm_crtc_handle_vblank()Gustavo Padovan1-1/+1
Remove legacy usage of drm_handle_vblank() Signed-off-by: Gustavo Padovan <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/atmel: use drm_crtc_handle_vblank()Gustavo Padovan1-1/+1
Remove legacy usage of drm_handle_vblank() Signed-off-by: Gustavo Padovan <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/armada: use drm_crtc_handle_vblank()Gustavo Padovan1-1/+1
Remove legacy usage of drm_handle_vblank() Signed-off-by: Gustavo Padovan <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm: make drm_vblank_count_and_time() staticGustavo Padovan2-7/+2
As they are not used anywhere outside drm_irq.c make them static. Signed-off-by: Gustavo Padovan <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/mediatek/mtk_mipi_tx: checking the wrong variableDan Carpenter1-1/+1
We should be checking "phy_provider" here not "phy". Fixes: 2e54c14e310f ('drm/mediatek: Add DSI sub driver') Signed-off-by: Dan Carpenter <[email protected]> Reviewed-by: Matthias Brugger <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/20160701135934.GA15723@mwanda
2016-07-12drm/qxl: Remove deprecated create_singlethread_workqueueBhaktipriya Shridhar3-7/+2
System workqueues have been able to handle high level of concurrency for a long time now and there's no reason to use dedicated workqueues just to gain concurrency. Since the workqueue in the QXL graphics device driver is involved in freeing and processing the release ring (workitem &qdev->gc_workqxl, maps to gc_work which calls qxl_garbage_collect) and is not being used on a memory reclaim path, dedicated gc_queue has been replaced with the use of system_wq. Unlike a dedicated per-cpu workqueue created with create_workqueue(), system_wq allows multiple work items to overlap executions even on the same CPU; however, a per-cpu workqueue doesn't have any CPU locality or global ordering guarantees unless the target CPU is explicitly specified and thus the increase of local concurrency shouldn't make any difference. flush_work() has been called in qxl_device_fini() to ensure that there are no pending tasks while disconnecting the driver. Signed-off-by: Bhaktipriya Shridhar <[email protected]> Acked-by: Tejun Heo <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/20160702110209.GA3560@Karyakshetra
2016-07-12drm/hisilicon: Fix ADE vblank on/off handlingXinliang Liu1-0/+2
Vblank turn on should be called in crtc's enable callback. And turn off called in crtc's disable callback. Thanks to Daniel Vetter, this bug is reported by him. Reported-by: Daniel Vetter <[email protected]> Signed-off-by: Xinliang Liu <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm_aux-dev: fix error handling in drm_dp_aux_dev_init()Alexey Khoroshilov1-2/+1
If class_create() fails, there is no need for class_destroy(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm: Fix broken use of _PAGE_NO_CACHE on powerpcBenjamin Herrenschmidt3-4/+4
That constant isn't meant to be used outside of arch mm code Signed-off-by: Benjamin Herrenschmidt <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/dsi: Make set_tear_scanline command consistentThierry Reding2-9/+9
Use a consistent name for the function that implements set_tear_scanline and reword and reformat the kerneldoc slightly. Signed-off-by: Thierry Reding <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/qxl: Remove dead codeThierry Reding1-4/+0
The QXL driver sets DRIVER_MODESET unconditionally, so testing for the absence of the feature will always fail. Signed-off-by: Thierry Reding <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/vmwgfx: Stop checking minor type directlyFrank Binns1-2/+1
Use the appropriate drm minor type helper instead. Cc: Sinclair Yeh <[email protected]> Cc: Thomas Hellstrom <[email protected]> Signed-off-by: Frank Binns <[email protected]> Reviewed-by: Sinclair Yeh <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/udl: Unplugging a device now unregisters itChris Wilson1-1/+0
Rather than manually perform our unregistration actions before shutting down the device, move them to drm_unplug_dev(). Signed-off-by: Chris Wilson <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Alexey Brodkin <[email protected]> Cc: Amitoj Kaur Chawla <[email protected]> Cc: [email protected] Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm: Do a full device unregister when unpluggingChris Wilson1-3/+1
Rather than do a partial unregister of just the minors, unregister the device (drm_dev_unregister(), and so remove all userspace interfaces, when the device is unplugged (drm_unplug_dev()). Signed-off-by: Chris Wilson <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Laurent Pinchart <[email protected]> Cc: Alexey Brodkin <[email protected]> Cc: Amitoj Kaur Chawla <[email protected]> Cc: [email protected] Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm: Unexport drm_connector_register_all()Chris Wilson2-19/+1
This has now been removed from all drivers as it is performed centrally as a part of device registration for modesetting drivers. With the last user gone, we can unexport it from the DRM module. Signed-off-by: Chris Wilson <[email protected]> Cc: David Airlie <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: [email protected] Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected] Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/exynos: make fbdev support really optionalTobias Jakobi1-4/+0
Currently enabling Exynos DRM support automatically pulls in lots of fbdev dependencies. However these deps are unnecessary since DRM core already enables them when needed. Signed-off-by: Tobias Jakobi <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm: Only handle _DRM_VBLANK_NEXTONMISS onceMichel Dänzer1-11/+5
Consolidate the _DRM_VBLANK_NEXTONMISS handling between drm_wait_vblank and drm_queue_vblank_event. This is a cleanup spotted while working on other changes. (The way it was previously handled could also theoretically result in drm_queue_vblank_event unnecessarily bumping vblwait->request.sequence, if the vblank counter happened to increment between the drm_vblank_count(_and_time) calls in each function, but that's unlikely) Signed-off-by: Michel Dänzer <[email protected]> Reviewed-by: Chris Wilson <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
2016-07-12drm/vgem: Enable dmabuf interface for exportChris Wilson1-1/+88
Enable the standard GEM dma-buf interface provided by the DRM core, but only for exporting the VGEM object. This allows passing around the VGEM objects created from the dumb interface and using them as sources elsewhere. Creating a VGEM object for a foriegn handle is not supported. v2: With additional completeness. v3: Need to clear the CPU cache upon exporting the dma-addresses. v4: Use drm_gem_put_pages() as well. v5: Use drm_prime_pages_to_sg() Testcase: igt/vgem_basic/dmabuf-* Testcase: igt/prime_vgem Signed-off-by: Chris Wilson <[email protected]> Cc: Sean Paul <[email protected]> Cc: Zach Reizner <[email protected]> Acked-by: Zach Reizner <[email protected]> Reviewed-by: Matthew Auld <[email protected]> Signed-off-by: Daniel Vetter <[email protected]> Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
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