- 26 Sep, 2018 2 commits
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Ezequiel Garcia authored
Currently, virtio_gpu_object_kmap() is only called by virtio_gpufb_create(), when a DRM framebuffer is created. Thus, instead of returning the vmap'ed address, emit a warning if virtio_gpu_object_kmap is called on an already mapped object. With this change, kmap/kunmap calls are now balanced. Signed-off-by:
Ezequiel Garcia <ezequiel@collabora.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180925161606.17980-3-ezequiel@collabora.comSigned-off-by:
Gerd Hoffmann <kraxel@redhat.com>
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Ezequiel Garcia authored
Implement a virtio_gpu_object_kunmap() to unmap the kernel mapping, and use it in the TTM object destroy path. Signed-off-by:
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- 25 Sep, 2018 16 commits
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Gerd Hoffmann authored
Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20180921134704.12826-7-kraxel@redhat.com
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Gerd Hoffmann authored
Use DRM_FORMAT_HOST_XRGB8888, so we are using the correct format code on bigendian machines. Also set the quirk_addfb_prefer_host_byte_order mode_config bit so drm_mode_addfb() asks for the correct format code. Both DRM_FORMAT_* and VIRTIO_GPU_FORMAT_* are defined to be little endian, so using a different mapping on bigendian machines is wrong. It's there because of broken drm_mode_addfb() behavior. So with drm_mode_addfb() being fixed we can fix this too. While wading through the code I've noticed we have a little issue in virtio: We attach a format to the bo when it is created (DRM_IOCTL_MODE_CREATE_DUMB), not when we map it as framebuffer (DRM_IOCTL_MODE_ADDFB). Easy way out: Support a single format only. Pick DRM_FORMAT_HOST_XRGB8888, it is the only one actually used in practice. Drop unused mappings in virtio_gpu_translate_format(). With this patch applied both ADDFB and ADDFB2 ioctls work correctly in the virtio-gpu.ko driver on big endian machines. Without the patch only ADDFB (which still seems to be used by the majority of userspace) works correctly. Signed-off-by:
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Gerd Hoffmann authored
Add bochs_hw_set_*_endian() helper functions, to set the framebuffer byteorder at mode set time. Support both DRM_FORMAT_XRGB8888 and DRM_FORMAT_BGRX8888 framebuffer formats, no matter what the native machine byte order is. Signed-off-by:
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Gerd Hoffmann authored
Use DRM_FORMAT_HOST_XRGB8888, so we are using the correct format code on bigendian machines. Also set the quirk_addfb_prefer_host_byte_order mode_config bit so drm_mode_addfb() asks for the correct format code. Create our own plane and use drm_crtc_init_with_planes() instead of depending on the default created by drm_crtc_init(). That way the plane format list is correct on bigendian machines. Also re-add the framebuffer format check dropped by "df2052cc bochs: convert to drm_fb_helper_fbdev_setup/teardown". With this patch applied both ADDFB and ADDFB2 ioctls work correctly in the bochs-drm.ko driver on big endian machines. Without the patch only ADDFB (which still seems to be used by the majority of userspace) works correctly. Signed-off-by:
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Gerd Hoffmann authored
Creating framebuffers for fbdev emulation should use the correct format code too, so switch drm_gem_fbdev_fb_create() over to use the new drm_driver_legacy_fb_format() function. Signed-off-by:
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Gerd Hoffmann authored
Turns out we need the pixel format fixup not only for the addfb ioctl, but also for fbdev emulation code. Ideally we would place it in drm_mode_legacy_fb_format(). That would create alot of churn though, and most drivers don't care because they never ever run on a big endian platform. So add a new drm_driver_legacy_fb_format() function instead which looks at the mode_config->quirk_addfb_prefer_host_byte_order flag. Signed-off-by:
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Gerd Hoffmann authored
Pass virtio_gpu_object down to virtio_gpu_cmd_transfer_to_host_2d and virtio_gpu_cmd_transfer_to_host_3d functions, instead of passing just the virtio resource handle. This is needed to lookup the scatter list of the object, for dma sync. Signed-off-by:
Jiandi An <jiandi.an@amd.com> Tested-by:
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Noralf Trønnes authored
The CMA helper is already using the drm_fb_helper_generic_probe part of the generic fbdev emulation. This patch makes full use of the generic fbdev emulation by using its drm_client callbacks. This means that drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are now handled by the emulation code. Additionally fbdev unregister happens automatically on drm_dev_unregister(). The drm_fbdev_generic_setup() call is put after drm_dev_register() in the driver. This is done to highlight the fact that fbdev emulation is an internal client that makes use of the driver, it is not part of the driver as such. If fbdev setup fails, an error is printed, but the driver succeeds probing. Cc: Shawn Guo <shawnguo@kernel.org> Signed-off-by:
Noralf Trønnes <noralf@tronnes.org> Acked-by:
Sam Ravnborg <sam@ravnborg.org> Acked-by:
Shawn Guo <shawnguo@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180908134648.2582-20-noralf@tronnes.org
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Noralf Trønnes authored
The CMA helper is already using the drm_fb_helper_generic_probe part of the generic fbdev emulation. This patch makes full use of the generic fbdev emulation by using its drm_client callbacks. This means that drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are now handled by the emulation code. Additionally fbdev unregister happens automatically on drm_dev_unregister(). The drm_fbdev_generic_setup() call is put after drm_dev_register() in the driver. This is done to highlight the fact that fbdev emulation is an internal client that makes use of the driver, it is not part of the driver as such. If fbdev setup fails, an error is printed, but the driver succeeds probing. drm_fbdev_generic_setup() handles mode_config.num_connector being zero. In that case it retries fbdev setup on the next .output_poll_changed. Cc: Eric Anholt <eric@anholt.net> Signed-off-by:
Eric Anholt <eric@anholt.net> Link: https://patchwork.freedesktop.org/patch/msgid/20180908134648.2582-19-noralf@tronnes.org
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Noralf Trønnes authored
The CMA helper is already using the drm_fb_helper_generic_probe part of the generic fbdev emulation. This patch makes full use of the generic fbdev emulation by using its drm_client callbacks. This means that drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are now handled by the emulation code. Additionally fbdev unregister happens automatically on drm_dev_unregister(). The drm_fbdev_generic_setup() call is put after drm_dev_register() in the driver. This is done to highlight the fact that fbdev emulation is an internal client that makes use of the driver, it is not part of the driver as such. If fbdev setup fails, an error is printed, but the driver succeeds probing. Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180908134648.2582-18-noralf@tronnes.org
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Noralf Trønnes authored
The CMA helper is already using the drm_fb_helper_generic_probe part of the generic fbdev emulation. This patch makes full use of the generic fbdev emulation by using its drm_client callbacks. This means that drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are now handled by the emulation code. Additionally fbdev unregister happens automatically on drm_dev_unregister(). If drm_fbdev_generic_setup() fails, an error is printed by the function. drm_fbdev_generic_setup() handles mode_config.num_connector being zero. In that case it retries fbdev setup on the next .output_poll_changed. Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org> Cc: Vincent Abriou <vincent.abriou@st.com> Signed-off-by:
Benjamin Gaignard <benjamin.gaignard@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180908134648.2582-14-noralf@tronnes.org
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Noralf Trønnes authored
The CMA helper is already using the drm_fb_helper_generic_probe part of the generic fbdev emulation. This patch makes full use of the generic fbdev emulation by using its drm_client callbacks. This means that drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are now handled by the emulation code. Additionally fbdev unregister happens automatically on drm_dev_unregister(). The drm_fbdev_generic_setup() call is put after drm_dev_register() in the driver. This is done to highlight the fact that fbdev emulation is an internal client that makes use of the driver, it is not part of the driver as such. If fbdev setup fails, an error is printed, but the driver succeeds probing. Cc: Eric Anholt <eric@anholt.net> Signed-off-by:
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Noralf Trønnes authored
The CMA helper is already using the drm_fb_helper_generic_probe part of the generic fbdev emulation. This patch makes full use of the generic fbdev emulation by using its drm_client callbacks. This means that drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are now handled by the emulation code. Additionally fbdev unregister happens automatically on drm_dev_unregister(). The drm_fbdev_generic_setup() call is put after drm_dev_register() in the driver. This is done to highlight the fact that fbdev emulation is an internal client that makes use of the driver, it is not part of the driver as such. If fbdev setup fails, an error is printed, but the driver succeeds probing. CONFIG_DRM_FBDEV_EMULATION wasn't honoured by the CMA helper, but it is by drm_fb_helper. Cc: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by:
Philipp Zabel <p.zabel@pengutronix.de> Acked-by:
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Noralf Trønnes authored
The CMA helper is already using the drm_fb_helper_generic_probe part of the generic fbdev emulation. This patch makes full use of the generic fbdev emulation by using its drm_client callbacks. This means that drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are now handled by the emulation code. Additionally fbdev unregister happens automatically on drm_dev_unregister(). The drm_fbdev_generic_setup() call is put after drm_dev_register() in the driver. This is done to highlight the fact that fbdev emulation is an internal client that makes use of the driver, it is not part of the driver as such. If fbdev setup fails, an error is printed, but the driver succeeds probing. Cc: Liviu Dudau <liviu.dudau@arm.com> Cc: Brian Starkey <brian.starkey@arm.com> Signed-off-by:
Liviu Dudau <liviu.dudau@arm.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180908134648.2582-10-noralf@tronnes.org
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Noralf Trønnes authored
The CMA helper is already using the drm_fb_helper_generic_probe part of the generic fbdev emulation. This patch makes full use of the generic fbdev emulation by using its drm_client callbacks. This means that drm_mode_config_funcs->output_poll_changed and drm_driver->lastclose are now handled by the emulation code. Additionally fbdev unregister happens automatically on drm_dev_unregister(). The drm_fbdev_generic_setup() call is put after drm_dev_register() in the driver. This is done to highlight the fact that fbdev emulation is an internal client that makes use of the driver, it is not part of the driver as such. If fbdev setup fails, an error is printed, but the driver succeeds probing. Cc: Liviu Dudau <liviu.dudau@arm.com> Signed-off-by:
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Noralf Trønnes authored
Improve error reporting in drm_fb_helper_fbdev_setup() by printing the error code. This is useful for drivers that choose to not fall over just because fbdev doesen't work, but still wants clues to why it failed. This way they don't have to provide an error message themselves. Signed-off-by:
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- 21 Sep, 2018 4 commits
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Chris Wilson authored
After schedule() returns 0, we must do one last check of COND to determine the reason for the wakeup with 0 jiffies remaining before reporting the timeout -- otherwise we may lose the signal due to scheduler delays. References: https://bugs.freedesktop.org/show_bug.cgi?id=106690Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180920200530.2836-2-chris@chris-wilson.co.ukReviewed-by:
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Chris Wilson authored
Both the .enable_signaling and .release of the null syncobj fence can be replaced by the default callbacks for a small reduction in code size. In particular the default callback for .release was changed in commit e28bd101 ("drm: rename null fence to stub fence in syncobj v2") which neglected its RCU protection. Fixes: e28bd101 ("drm: rename null fence to stub fence in syncobj v2") Signed-off-by:
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José Roberto de Souza authored
All DRM_CLIENT capabilities are tied to KMS support, so returning -EOPNOTSUPP when KMS is not supported. v2: returning -EOPNOTSUPP(same value as posix ENOTSUP and available in uapi) instead of -ENOTSUPP v3: adding comments about the feature requirement about capabilities Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
José Roberto de Souza <jose.souza@intel.com> Signed-off-by:
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Wei Yongjun authored
'vaddr_out' is malloced in _vkms_get_crc() and should be freed before leaving from the error handling cases, otherwise it will cause memory leak. Fixes: db7f419c ("drm/vkms: Compute CRC with Cursor Plane") Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by:
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- 20 Sep, 2018 2 commits
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Sean Paul authored
Move udl maintenance into drm-misc tree. I've also signed up to be a reviewer, but have kept it at Odd Fixes level of support. Cc: Dave Airlie <airlied@redhat.com> Cc: David Airlie <airlied@linux.ie> Cc: Gustavo Padovan <gustavo@padovan.org> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Acked-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
Sean Paul <seanpaul@chromium.org> Link: https://patchwork.freedesktop.org/patch/msgid/20180919204026.3217-1-sean@poorly.run
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Kieran Bingham authored
Planes without an alpha property, using __drm_atomic_helper_plane_reset will have their plane state alpha initialised as zero, which represents a transparent alpha. If this value is then used for the plane, it may not be visible by default, and thus doesn't represent a good initialisation state. Update the default state->alpha value to DRM_BLEND_ALPHA_OPAQUE unconditionally when the plane is reset. Signed-off-by:
Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Reviewed-by:
Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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- 19 Sep, 2018 7 commits
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zhong jiang authored
for_each_available_child_of_node will get and put the node properly, the following of_node_put will lead to the double put. So just remove it. Signed-off-by:
zhong jiang <zhongjiang@huawei.com> Signed-off-by:
Shawn Guo <shawn.guo@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/1534472646-10368-1-git-send-email-zhongjiang@huawei.com
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Lee, Shawn C authored
The N value was computed by kernel driver that based on synchronous clock mode. But only specific N value (0x8000) would be acceptable for LG LP140WF6-SPM1 eDP panel which is running at asynchronous clock mode. With the other N value, Tcon will enter BITS mode and display black screen. Add this panel into quirk database and give particular N value when calculate M/N divider. v2: no update v3: add lost commit messages back for version 2 v4: send patch to both intel-gfx and dri-devel Cc: Jani Nikula <jani.nikula@intel.com> Cc: Cooper Chiou <cooper.chiou@intel.com> Cc: Matt Atwood <matthew.s.atwood@intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Clint Taylor <clinton.a.taylor@intel.com> Signed-off-by:
Lee, Shawn C <shawn.c.lee@intel.com> Signed-off-by:
Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1536733371-25004-4-git-send-email-shawn.c.lee@intel.com
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Lee, Shawn C authored
Some DP dongles in particular seem to be fussy about too large link M/N values. Set specific value for N divider can resolve this issue per dongle vendor's comment. So configure N as constant value (0x8000) to instead of reduce M/N formula when specific DP dongle connected. v2: add more comments for issue description and fix typo. v3: add lost commit messages back for version 2 v4: send patch to both intel-gfx and dri-devel Cc: Jani Nikula <jani.nikula@intel.com> Cc: Cooper Chiou <cooper.chiou@intel.com> Cc: Matt Atwood <matthew.s.atwood@intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Clint Taylor <clinton.a.taylor@intel.com> Tested-by:
Clint Taylor <clinton.a.taylor@intel.com> Signed-off-by:
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Lee, Shawn C authored
DP quirk list just compare sink or branch device's OUI so far. That means particular vendor's products will be applied specific change. This change would confirm device_id the same or not. Then driver can implement some changes for branch/sink device that really need additional WA. v2: use sizeof instead of hard coded '6' v3: add lost commit messages back for version 2 v4: send patch to both intel-gfx and dri-devel Cc: Jani Nikula <jani.nikula@intel.com> Cc: Cooper Chiou <cooper.chiou@intel.com> Cc: Matt Atwood <matthew.s.atwood@intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Cc: Clint Taylor <clinton.a.taylor@intel.com> Tested-by:
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Jiandi An authored
With virtio gpu ttm-pages being dma mapped, dma sync is needed when swiotlb is used as bounce buffers, before TRANSFER_TO_HOST_2D/3D commands are sent. Signed-off-by:
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Icenowy Zheng authored
The R40 SoC has a HDMI PHY that is possible to mux two video PLLs. Add support for it. Signed-off-by:
Icenowy Zheng <icenowy@aosc.io> Signed-off-by:
Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180916043409.62374-4-icenowy@aosc.io
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Icenowy Zheng authored
The Allwinner R40 HDMI PHY is currently the only one that seems to be able to select between two PLL inputs. Add a compatible string for it, and the pll-1 clock input definition. Signed-off-by:
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- 14 Sep, 2018 2 commits
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Chris Wilson authored
If the ioctl is not supported on a particular piece of HW/driver combination, report ENOTSUP (aka EOPNOTSUPP) so that it can be easily distinguished from both the lack of the ioctl and from a regular invalid parameter. v2: Across all the kms ioctls we had a mixture of reporting EINVAL, ENODEV and a few ENOTSUPP (most where EINVAL) for a failed drm_core_check_feature(). Update everybody to report ENOTSUPP. v3: ENOTSUPP is an internal errno! It's value (524) does not correspond to a POSIX errno, the one we want is ENOTSUP. However, uapi/asm-generic/errno.h doesn't include ENOTSUP but man errno says "ENOTSUP and EOPNOTSUPP have the same value on Linux, but according to POSIX.1 these error values should be distinct." so use EOPNOTSUPP as its equivalent. Signed-off-by:
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Dan Carpenter authored
We accidentally forgot to set "ret" on this error path so it means we return NULL instead of an error pointer. The caller checks for NULL and changes it to an error pointer so it doesn't cause an issue at run time. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Link: http://patchwork.freedesktop.org/patch/msgid/20180914065615.GA12043@mwandaSigned-off-by:
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- 13 Sep, 2018 5 commits
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Ville Syrjälä authored
Disable atomic on a per-device basis instead of for all devices. Made possible by the new device.driver_features thing. Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Cc: "David (ChunMing) Zhou" <David1.Zhou@amd.com> Cc: Harry Wentland <harry.wentland@amd.com> Cc: Michel Dänzer <michel@daenzer.net> Suggested-by:
Michel Dänzer <michel@daenzer.net> Signed-off-by:
Michel Dänzer <michel.daenzer@amd.com> Reviewed-by:
Alex Deucher <alexander.deucher@amd.com>
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Ville Syrjälä authored
Currently we're clearing DRIVER_ATOMIC in driver.driver_features for older platforms. This will not work correctly should we ever have a system with and old and new GPU in it. While that is not possible currently let's make the code more correct and use the per-device driver_features instead. Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
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Ville Syrjälä authored
We wish to control certain driver_features flags on a per-device basis while still sharing a single drm_driver instance across all the devices. To that end introduce device.driver_features. By default it will be set to ~0 to not impose any limits beyond driver.driver_features. Drivers can then clear specific flags in the per-device bitmask to limit the capabilities of the device. An alternative approach would be to copy the driver_features from the driver into the device in drm_dev_init(), however that would require verifying that no driver is currently changing driver.driver_features after drm_dev_init(). Hence the ~0 apporach was easier. Ideally we'd also make drm_driver const but there is plenty of code left that wants to mutate it (eg. various vfunc assignments). We'll need to fix all that up before we can make it const. And while at it fix up the type of the feature flag passed to drm_core_check_feature(). v2: Streamline the && vs. & (Chris) s/int/u32/ in drm_core_check_feature() args Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: -
Peter Rosin authored
Since commit 4a878c03 ("drm: bridge: Detach bridge from encoder at encoder cleanup time"), it is generally no longer correct to detach bridges from encoders manually. Document that. Signed-off-by:
Peter Rosin <peda@axentia.se> Signed-off-by:
Andrzej Hajda <a.hajda@samsung.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180806061910.29914-3-peda@axentia.se
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Marc Zyngier authored
The Analogix DP bridge driver is pretty verbose, and outputs things like [ 619.414067] rockchip-dp ff970000.edp: Link Training Clock Recovery success [ 619.429233] rockchip-dp ff970000.edp: Link Training success! each time the display gets unblanked. While it is good to know that the device is behaving correctly, users already know that because they can see some video output. Let's keep these messages for cases where we need to actually debug the driver (we have dynamic debug to enable them at runtime if need be), and let's keep the kernel quiet otherwise. Signed-off-by:
Marc Zyngier <marc.zyngier@arm.com> Reviewed-by:
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- 12 Sep, 2018 2 commits
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Maxime Ripard authored
Having DRM_SUN4I built-in but DRM_SUN8I_MIXER as a loadable module results in a link error, as we try to access a symbol from the sun8i_tcon_top.ko module: ERROR: "sun8i_tcon_top_de_config" [drivers/gpu/drm/sun4i/sun4i-tcon.ko] undefined! ERROR: "sun8i_tcon_top_set_hdmi_src" [drivers/gpu/drm/sun4i/sun4i-tcon.ko] undefined! ERROR: "sun8i_tcon_top_of_table" [drivers/gpu/drm/sun4i/sun4i-tcon.ko] undefined! This solves the problem by adding a silent symbol for the tcon_top module, building it as a separate module in exactly the cases that we need it, but in a way that it is reachable by the other modules. Fixes: cf77d79b ("drm/sun4i: tcon: Add another way for matching mixers with tcon") Fixes: 0305189a ("drm/sun4i: tcon: Add support for R40 TCON") Reviewed-by:
Jon Hunter <jonathanh@nvidia.com> Tested-by:
Matt Hart <matthew.hart@linaro.org> Signed-off-by:
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Peter Wu authored
Lots of code can be removed by relying on fb-helper: - "struct drm_framebuffer" moves to fb_helper.fb. - "struct drm_gem_object" moves to fb_helper.obj[0]. - "struct qxl_device" can be inferred as drm_fb_helper is embedded. - qxl_user_framebuffer_create -> drm_gem_fb_create. - qxl_user_framebuffer_destroy -> drm_gem_fb_destroy. - qxl_fbdev_destroy -> drm_fb_helper_fbdev_teardown + vfree(shadow). Remove unused code: - qxl_fbdev_qobj_is_fb, qxl_fbdev_set_suspend. - Unused fields of qxl_fbdev: delayed_ops, delayed_ops_lock, size. Misc notes: - The dirty callback is preserved as it is necessary to trigger update commands in the hw (the screen stays black otherwise). - No idea when .create_handle in drm_framebuffer_funcs is used, but use the same drm_gem_fb_create_handle to match drm_gem_fb_funcs. - I don't know why qxl_fb_find_or_create_single used to check for an existing framebuffer and removed that check to match other drivers. - Use of drm_fb_helper_fbdev_teardown also requires "info->fbdefio" to be dynamically allocated. Replace the existing defio config by drm_fb_helper_defio_init to accomodate this. Testing results: startx with fbdev, modesetting and qxl all seems to work. Tested also with CONFIG_DRM_FBDEV_EMULATION=n, fbdev obviously fails but others are fine. QEMU -spice and QEMU -spice with vdagent and multiple (resized) displays (via remote-viewer) also works. unbind vtconsole and rmmod has *not* regressed (i.e. it still trips on a use-after-free in qxl_check_idle via qxl_ttm_fini). Ideally setup/teardown is replaced by drm_fbdev_generic_setup as that would result in further code reduction, improve error handling (like not leaking shadow memory), but unfortunately QXL has no implementation for qxl_gem_prime_vmap. Signed-off-by:
Peter Wu <peter@lekensteyn.nl> Link: http://patchwork.freedesktop.org/patch/msgid/20180910132156.23201-1-peter@lekensteyn.nlSigned-off-by:
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