Searched hist:b25c60af (Results 1 – 3 of 3) sorted by relevance
/openbmc/linux/include/drm/ |
H A D | drm_atomic_helper.h | b25c60af Tue Jul 03 02:50:19 CDT 2018 Boris Brezillon <boris.brezillon@bootlin.com> drm/crtc: Add a generic infrastructure to fake VBLANK events
In some cases CRTCs are active but are not able to generating events, at least not at every frame at it's expected to. This is typically the case when the CRTC is feeding a writeback connector that has no job queued. In this situation the CRTC is usually stopped until a new job is queued, and this can lead to timeouts when part of the pipeline is updated but no new jobs are queued to the active writeback connector.
In order to solve that, we add a ->no_vblank flag to drm_crtc_state and ask the CRTC drivers to set it to true when they know they're not able to generate VBLANK events. The core drm_atomic_helper_fake_vblank() helper can then be used to fake VBLANKs at commit time.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-6-boris.brezillon@bootlin.com b25c60af Tue Jul 03 02:50:19 CDT 2018 Boris Brezillon <boris.brezillon@bootlin.com> drm/crtc: Add a generic infrastructure to fake VBLANK events In some cases CRTCs are active but are not able to generating events, at least not at every frame at it's expected to. This is typically the case when the CRTC is feeding a writeback connector that has no job queued. In this situation the CRTC is usually stopped until a new job is queued, and this can lead to timeouts when part of the pipeline is updated but no new jobs are queued to the active writeback connector. In order to solve that, we add a ->no_vblank flag to drm_crtc_state and ask the CRTC drivers to set it to true when they know they're not able to generate VBLANK events. The core drm_atomic_helper_fake_vblank() helper can then be used to fake VBLANKs at commit time. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-6-boris.brezillon@bootlin.com
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H A D | drm_crtc.h | b25c60af Tue Jul 03 02:50:19 CDT 2018 Boris Brezillon <boris.brezillon@bootlin.com> drm/crtc: Add a generic infrastructure to fake VBLANK events
In some cases CRTCs are active but are not able to generating events, at least not at every frame at it's expected to. This is typically the case when the CRTC is feeding a writeback connector that has no job queued. In this situation the CRTC is usually stopped until a new job is queued, and this can lead to timeouts when part of the pipeline is updated but no new jobs are queued to the active writeback connector.
In order to solve that, we add a ->no_vblank flag to drm_crtc_state and ask the CRTC drivers to set it to true when they know they're not able to generate VBLANK events. The core drm_atomic_helper_fake_vblank() helper can then be used to fake VBLANKs at commit time.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-6-boris.brezillon@bootlin.com b25c60af Tue Jul 03 02:50:19 CDT 2018 Boris Brezillon <boris.brezillon@bootlin.com> drm/crtc: Add a generic infrastructure to fake VBLANK events In some cases CRTCs are active but are not able to generating events, at least not at every frame at it's expected to. This is typically the case when the CRTC is feeding a writeback connector that has no job queued. In this situation the CRTC is usually stopped until a new job is queued, and this can lead to timeouts when part of the pipeline is updated but no new jobs are queued to the active writeback connector. In order to solve that, we add a ->no_vblank flag to drm_crtc_state and ask the CRTC drivers to set it to true when they know they're not able to generate VBLANK events. The core drm_atomic_helper_fake_vblank() helper can then be used to fake VBLANKs at commit time. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-6-boris.brezillon@bootlin.com
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/openbmc/linux/drivers/gpu/drm/ |
H A D | drm_atomic_helper.c | b25c60af Tue Jul 03 02:50:19 CDT 2018 Boris Brezillon <boris.brezillon@bootlin.com> drm/crtc: Add a generic infrastructure to fake VBLANK events
In some cases CRTCs are active but are not able to generating events, at least not at every frame at it's expected to. This is typically the case when the CRTC is feeding a writeback connector that has no job queued. In this situation the CRTC is usually stopped until a new job is queued, and this can lead to timeouts when part of the pipeline is updated but no new jobs are queued to the active writeback connector.
In order to solve that, we add a ->no_vblank flag to drm_crtc_state and ask the CRTC drivers to set it to true when they know they're not able to generate VBLANK events. The core drm_atomic_helper_fake_vblank() helper can then be used to fake VBLANKs at commit time.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-6-boris.brezillon@bootlin.com b25c60af Tue Jul 03 02:50:19 CDT 2018 Boris Brezillon <boris.brezillon@bootlin.com> drm/crtc: Add a generic infrastructure to fake VBLANK events In some cases CRTCs are active but are not able to generating events, at least not at every frame at it's expected to. This is typically the case when the CRTC is feeding a writeback connector that has no job queued. In this situation the CRTC is usually stopped until a new job is queued, and this can lead to timeouts when part of the pipeline is updated but no new jobs are queued to the active writeback connector. In order to solve that, we add a ->no_vblank flag to drm_crtc_state and ask the CRTC drivers to set it to true when they know they're not able to generate VBLANK events. The core drm_atomic_helper_fake_vblank() helper can then be used to fake VBLANKs at commit time. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20180703075022.15138-6-boris.brezillon@bootlin.com
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