[igt-dev] [PATCH 01/10] lib/ioctl_wrappers: Query if device supports set/get legacy tiling

[Vanshidhar Konda <vanshidhar.r.konda@intel.com>]

Add a method to query if the device supports setting and getting legacy
tiling formats for buffer objects.

Signed-off-by: Vanshidhar Konda <vanshidhar.r.konda@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
---
 lib/ioctl_wrappers.c | 17 +++++++++++++++++
 lib/ioctl_wrappers.h |  1 +
 2 files changed, 18 insertions(+)

diff --git a/lib/ioctl_wrappers.c b/lib/ioctl_wrappers.c
index 627717d2..c1abb575 100644
--- a/lib/ioctl_wrappers.c
+++ b/lib/ioctl_wrappers.c
@@ -133,6 +133,23 @@ __gem_get_tiling(int fd, struct drm_i915_gem_get_tiling *arg)
 	return err;
 }
 
+/**
+ * gem_has_legacy_hw_tiling:
+ * @fd: open i915 drm file descriptor
+ *
+ * Feature check to query if the device supports setting/getting
+ * legacy tiling formats for buffer objects
+ *
+ * Returns: True if tiling is supported
+ */
+bool
+gem_has_legacy_hw_tiling(int fd)
+{
+	struct drm_i915_gem_get_tiling arg = {};
+
+	return (__gem_get_tiling(fd, &arg) != -EOPNOTSUPP);
+}
+
 /**
  * gem_get_tiling:
  * @fd: open i915 drm file descriptor
diff --git a/lib/ioctl_wrappers.h b/lib/ioctl_wrappers.h
index 7614e688..0ea77738 100644
--- a/lib/ioctl_wrappers.h
+++ b/lib/ioctl_wrappers.h
@@ -146,6 +146,7 @@ void gem_require_caching(int fd);
 void gem_require_ring(int fd, unsigned ring);
 bool gem_has_mocs_registers(int fd);
 void gem_require_mocs_registers(int fd);
+bool gem_has_legacy_hw_tiling(int fd);
 
 #define gem_has_ring(f, r) gem_context_has_engine(f, 0, r)
 
-- 
2.24.0

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