From ad9ee11fdf113f966e338a3f796efd326fc6f502 Mon Sep 17 00:00:00 2001 From: Simon Ser Date: Wed, 12 Jul 2023 18:32:00 +0000 Subject: [PATCH] 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 Reviewed-by: Jeffrey Hugo Cc: Thomas Zimmermann Cc: Alex Deucher Cc: Jeffrey Hugo Cc: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20230712183156.191445-1-contact@emersion.fr --- include/uapi/drm/drm.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h index ccf6ddb9560e..794c1d857677 100644 --- a/include/uapi/drm/drm.h +++ b/include/uapi/drm/drm.h @@ -673,6 +673,9 @@ struct drm_gem_open { * Bitfield of supported PRIME sharing capabilities. See &DRM_PRIME_CAP_IMPORT * and &DRM_PRIME_CAP_EXPORT. * + * Starting from kernel version 6.6, both &DRM_PRIME_CAP_IMPORT and + * &DRM_PRIME_CAP_EXPORT are always advertised. + * * PRIME buffers are exposed as dma-buf file descriptors. * See :ref:`prime_buffer_sharing`. */ @@ -682,6 +685,8 @@ struct drm_gem_open { * * If this bit is set in &DRM_CAP_PRIME, the driver supports importing PRIME * buffers via the &DRM_IOCTL_PRIME_FD_TO_HANDLE ioctl. + * + * Starting from kernel version 6.6, this bit is always set in &DRM_CAP_PRIME. */ #define DRM_PRIME_CAP_IMPORT 0x1 /** @@ -689,6 +694,8 @@ struct drm_gem_open { * * If this bit is set in &DRM_CAP_PRIME, the driver supports exporting PRIME * buffers via the &DRM_IOCTL_PRIME_HANDLE_TO_FD ioctl. + * + * Starting from kernel version 6.6, this bit is always set in &DRM_CAP_PRIME. */ #define DRM_PRIME_CAP_EXPORT 0x2 /**