diff options
author | Ben Widawsky <ben@bwidawsk.net> | 2017-07-23 20:46:39 -0700 |
---|---|---|
committer | Daniel Stone <daniels@collabora.com> | 2017-08-01 17:50:06 +0100 |
commit | db1689aa61bd1efb5ce9b896e7aa860a85b7f1b6 (patch) | |
tree | 0f9f810ae07e0eeed4f483ab5c5200265c748931 /include/uapi/drm/drm_mode.h | |
parent | e6fc3b68558e4c6d8d160b5daf2511b99afa8814 (diff) | |
download | linux-db1689aa61bd1efb5ce9b896e7aa860a85b7f1b6.tar.bz2 |
drm: Create a format/modifier blob
Updated blob layout (Rob, Daniel, Kristian, xerpi)
v2:
* Removed __packed, and alignment (.+)
* Fix indent in drm_format_modifier fields (Liviu)
* Remove duplicated modifier > 64 check (Liviu)
* Change comment about modifier (Liviu)
* Remove arguments to blob creation, use plane instead (Liviu)
* Fix data types (Ben)
* Make the blob part of uapi (Daniel)
v3:
Remove unused ret field.
Change i, and j to unsigned int (Emil)
v4:
Use plane->modifier_count instead of recounting (Daniel)
v5:
Rename modifiers to modifiers_property (Ville)
Use sizeof(__u32) instead to reflect UAPI nature (Ville)
Make BUILD_BUG_ON for blob header size
Cc: Rob Clark <robdclark@gmail.com>
Cc: Kristian H. Kristensen <hoegsberg@gmail.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Daniel Stone <daniels@collabora.com> (v2)
Reviewed-by: Liviu Dudau <liviu@dudau.co.uk> (v2)
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com> (v3)
Signed-off-by: Daniel Stone <daniels@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170724034641.13369-2-ben@bwidawsk.net
Diffstat (limited to 'include/uapi/drm/drm_mode.h')
-rw-r--r-- | include/uapi/drm/drm_mode.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index 403339f98a92..a2bb7161f020 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -712,6 +712,56 @@ struct drm_mode_atomic { __u64 user_data; }; +struct drm_format_modifier_blob { +#define FORMAT_BLOB_CURRENT 1 + /* Version of this blob format */ + u32 version; + + /* Flags */ + u32 flags; + + /* Number of fourcc formats supported */ + u32 count_formats; + + /* Where in this blob the formats exist (in bytes) */ + u32 formats_offset; + + /* Number of drm_format_modifiers */ + u32 count_modifiers; + + /* Where in this blob the modifiers exist (in bytes) */ + u32 modifiers_offset; + + /* u32 formats[] */ + /* struct drm_format_modifier modifiers[] */ +}; + +struct drm_format_modifier { + /* Bitmask of formats in get_plane format list this info applies to. The + * offset allows a sliding window of which 64 formats (bits). + * + * Some examples: + * In today's world with < 65 formats, and formats 0, and 2 are + * supported + * 0x0000000000000005 + * ^-offset = 0, formats = 5 + * + * If the number formats grew to 128, and formats 98-102 are + * supported with the modifier: + * + * 0x0000003c00000000 0000000000000000 + * ^ + * |__offset = 64, formats = 0x3c00000000 + * + */ + __u64 formats; + __u32 offset; + __u32 pad; + + /* The modifier that applies to the >get_plane format list bitmask. */ + __u64 modifier; +}; + /** * Create a new 'blob' data property, copying length bytes from data pointer, * and returning new blob ID. |