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| author | Hridya Valsaraju <hridya@google.com> | 2019-10-02 14:32:19 -0700 |
|---|---|---|
| committer | Amit Pundir <amit.pundir@linaro.org> | 2019-10-07 18:35:41 +0530 |
| commit | 799bc63ee56be9cd78689aa45bce8d8357303a59 (patch) | |
| tree | 047a87842bab25ebb2911a4fb015b36fe2933b09 /include | |
| parent | 25d0601c7b3123d3369e7cfb0ecfa0a94a2ec62a (diff) | |
Add an IOCTL to check ION ABI version
Userspace needs a way to detect ION ABI version at runtime to determine
heap IDs. CURRENT_ION_ABI_VERSION is set to 2 considering legacy and
upstream versions as 0 and 1.
Bug: 140916230
Test: make
Signed-off-by: Hridya Valsaraju <hridya@google.com>
Change-Id: Ie9d9e23c2d8323620832906d33745d599cbce6be
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/ion.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/uapi/linux/ion.h b/include/uapi/linux/ion.h index 09dbbfaf3718..ffae6d036cfa 100644 --- a/include/uapi/linux/ion.h +++ b/include/uapi/linux/ion.h @@ -159,4 +159,11 @@ struct ion_heap_query { #define ION_IOC_HEAP_QUERY _IOWR(ION_IOC_MAGIC, 8, \ struct ion_heap_query) +/** + * DOC: ION_IOC_HEAP_ABI_VERSION - return ABI version + * + * Returns ABI version for this driver + */ +#define ION_IOC_ABI_VERSION _IOR(ION_IOC_MAGIC, 9, \ + __u32) #endif /* _UAPI_LINUX_ION_H */ |