[PATCH i-g-t v1 1/2] lib/igt_kms: Add support to retrieve async modifiers

[Santhosh Reddy Guddati]

This patch introduces async_blob_data to handle asynchronous format
modifiers.Processes asynchronous format modifiers and update plane's
format and modifiers.

Handles 'IN_FORMATS_ASYNC' property.

Signed-off-by: Santhosh Reddy Guddati <santhosh.reddy.guddati at intel.com>
---
 lib/igt_kms.c | 39 ++++++++++++++++++++++++++++++++++++++-
 lib/igt_kms.h |  7 ++++++-
 2 files changed, 44 insertions(+), 2 deletions(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 3d061abc5..80885badc 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -701,6 +701,7 @@ const char * const igt_plane_prop_names[IGT_NUM_PLANE_PROPS] = {
 	[IGT_PLANE_FB_DAMAGE_CLIPS] = "FB_DAMAGE_CLIPS",
 	[IGT_PLANE_SCALING_FILTER] = "SCALING_FILTER",
 	[IGT_PLANE_SIZE_HINTS] = "SIZE_HINTS",
+	[IGT_PLANE_IN_FORMATS_ASYNC] = "IN_FORMATS_ASYNC",
 };
 
 const char * const igt_crtc_prop_names[IGT_NUM_CRTC_PROPS] = {
@@ -5724,11 +5725,14 @@ static int igt_count_plane_format_mod(const struct drm_format_modifier_blob *blo
 
 static void igt_fill_plane_format_mod(igt_display_t *display, igt_plane_t *plane)
 {
-	const struct drm_format_modifier_blob *blob_data;
+	const struct drm_format_modifier_blob *blob_data, *async_blob_data;
+	const struct drm_format_modifier *async_modifiers;
 	drmModePropertyBlobPtr blob;
 	uint64_t blob_id;
 	int idx = 0;
 	int count;
+	int async_count;
+	const uint32_t *async_formats;
 
 	if (!igt_plane_has_prop(plane, IGT_PLANE_IN_FORMATS)) {
 		drmModePlanePtr p = plane->drm_plane;
@@ -5788,6 +5792,39 @@ static void igt_fill_plane_format_mod(igt_display_t *display, igt_plane_t *plane
 	}
 
 	igt_assert_eq(idx, plane->format_mod_count);
+
+	blob_id = igt_plane_get_prop(plane, IGT_PLANE_IN_FORMATS_ASYNC);
+	blob = drmModeGetPropertyBlob(display->drm_fd, blob_id);
+
+	if (!blob)
+		return;
+
+	async_blob_data = (const struct drm_format_modifier_blob *)blob->data;
+	async_count = igt_count_plane_format_mod(async_blob_data);
+
+	if (!async_count)
+		return;
+
+	plane->async_format_mod_count = async_count;
+	plane->async_modifiers = calloc(async_count, sizeof(plane->async_modifiers[0]));
+	igt_assert(plane->async_modifiers);
+
+	for (int i = 0; i < async_blob_data->count_modifiers; i++) {
+		for (int j = 0; j < 64; j++) {
+			async_modifiers = modifiers_ptr(async_blob_data);
+			async_formats = formats_ptr(async_blob_data);
+
+			if (!(async_modifiers[i].formats & (1ULL << j)))
+				continue;
+
+			plane->formats[idx] = async_formats[async_modifiers[i].offset + j];
+			plane->async_modifiers[idx] = async_modifiers[i].modifier;
+			idx++;
+			igt_assert_lte(idx, plane->async_format_mod_count);
+		}
+	}
+
+	igt_assert_eq(idx, plane->async_format_mod_count);
 }
 
 /**
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index 8810123fb..56f37a6bb 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -365,7 +365,8 @@ enum igt_atomic_plane_properties {
        IGT_PLANE_HOTSPOT_X,
        IGT_PLANE_HOTSPOT_Y,
        IGT_PLANE_SIZE_HINTS,
-       IGT_NUM_PLANE_PROPS
+       IGT_PLANE_IN_FORMATS_ASYNC,
+       IGT_NUM_PLANE_PROPS,
 };
 
 /**
@@ -438,6 +439,9 @@ typedef struct igt_plane {
 	uint64_t *modifiers;
 	uint32_t *formats;
 	int format_mod_count;
+
+	uint64_t *async_modifiers;
+	int async_format_mod_count;
 } igt_plane_t;
 
 /*
@@ -1270,5 +1274,6 @@ int igt_get_dp_pending_retrain(int drm_fd, igt_output_t *output);
 void igt_reset_link_params(int drm_fd, igt_output_t *output);
 int igt_backlight_read(int *result, const char *fname, igt_backlight_context_t *context);
 int igt_backlight_write(int value, const char *fname, igt_backlight_context_t *context);
+bool igt_get_supported_async_modifier(igt_plane_t *plane);
 
 #endif /* __IGT_KMS_H__ */
-- 
2.34.1