drm/doc: document that PRIME import/export is always supported
Since commit 6b85aa68d9d5 ("drm: Enable PRIME import/export for all drivers"), import/export is always supported. Document this so that user-space knows what to expect. Signed-off-by: Simon Ser <contact@emersion.fr> Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Jeffrey Hugo <quic_jhugo@quicinc.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20230712183156.191445-1-contact@emersion.fr
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@ -673,6 +673,9 @@ struct drm_gem_open {
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* Bitfield of supported PRIME sharing capabilities. See &DRM_PRIME_CAP_IMPORT
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* and &DRM_PRIME_CAP_EXPORT.
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*
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* Starting from kernel version 6.6, both &DRM_PRIME_CAP_IMPORT and
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* &DRM_PRIME_CAP_EXPORT are always advertised.
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*
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* PRIME buffers are exposed as dma-buf file descriptors.
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* See :ref:`prime_buffer_sharing`.
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*/
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@ -682,6 +685,8 @@ struct drm_gem_open {
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*
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* If this bit is set in &DRM_CAP_PRIME, the driver supports importing PRIME
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* buffers via the &DRM_IOCTL_PRIME_FD_TO_HANDLE ioctl.
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*
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* Starting from kernel version 6.6, this bit is always set in &DRM_CAP_PRIME.
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*/
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#define DRM_PRIME_CAP_IMPORT 0x1
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/**
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@ -689,6 +694,8 @@ struct drm_gem_open {
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*
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* If this bit is set in &DRM_CAP_PRIME, the driver supports exporting PRIME
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* buffers via the &DRM_IOCTL_PRIME_HANDLE_TO_FD ioctl.
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*
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* Starting from kernel version 6.6, this bit is always set in &DRM_CAP_PRIME.
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*/
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#define DRM_PRIME_CAP_EXPORT 0x2
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/**
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