[igt-dev] [PATCH i-g-t v5 14/22] lib/igt_kms: Add helpers to count and iterate planes from pipe

Paul Kocialkowski
2019-02-20T15:40:02Z

This introduces helpers that allow counting how many planes of a given
type are present from a pipe and getting the n-th plane of a given type.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
lib/igt_kms.c | 48 ++++++++++++++++++++++++++++++++++++++++++++++++
lib/igt_kms.h | 3 +++
2 files changed, 51 insertions(+)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 080f90ae6e8c..1388bb4dae89 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -2279,6 +2279,54 @@ igt_plane_t *igt_pipe_get_plane_type(igt_pipe_t *pipe, int plane_type)
return &pipe->planes[plane_idx];
}

+/**
+ * igt_pipe_count_plane_type:
+ * @pipe: Target pipe
+ * @plane_type: Cursor, primary or an overlay plane
+ *
+ * Counts the number of planes of type @plane_type for the provided @pipe.
+ *
+ * Returns: The number of planes that match the requested plane type
+ */
+int igt_pipe_count_plane_type(igt_pipe_t *pipe, int plane_type)
+{
+ int i, count = 0;
+
+ for(i = 0; i < pipe->n_planes; i++)
+ if (pipe->planes[i].type == plane_type)
+ count++;
+
+ return count;
+}
+
+/**
+ * igt_pipe_get_plane_type_index:
+ * @pipe: Target pipe
+ * @plane_type: Cursor, primary or an overlay plane
+ * @index: the index of the plane among planes of the same type
+ *
+ * Get the @index th plane of type @plane_type for the provided @pipe.
+ *
+ * Returns: The @index th plane that matches the requested plane type
+ */
+igt_plane_t *igt_pipe_get_plane_type_index(igt_pipe_t *pipe, int plane_type,
+ int index)
+{
+ int i, type_index = 0;
+
+ for(i = 0; i < pipe->n_planes; i++) {
+ if (pipe->planes[i].type != plane_type)
+ continue;
+
+ if (type_index == index)
+ return &pipe->planes[i];
+
+ type_index++;
+ }
+
+ return NULL;
+}
+
static bool output_is_internal_panel(igt_output_t *output)
{
switch (output->config.connector->connector_type) {
diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index 679d4e84fab8..3b3cf659035b 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -407,6 +407,9 @@ igt_output_t *igt_output_from_connector(igt_display_t *display,
drmModeConnector *connector);

igt_plane_t *igt_pipe_get_plane_type(igt_pipe_t *pipe, int plane_type);
+int igt_pipe_count_plane_type(igt_pipe_t *pipe, int plane_type);
+igt_plane_t *igt_pipe_get_plane_type_index(igt_pipe_t *pipe, int plane_type,
+ int index);
igt_output_t *igt_get_single_output_for_pipe(igt_display_t *display, enum pipe pipe);

void igt_pipe_request_out_fence(igt_pipe_t *pipe);