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-rw-r--r--libgamma_linux_drm_crtc_initialise.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/libgamma_linux_drm_crtc_initialise.c b/libgamma_linux_drm_crtc_initialise.c
new file mode 100644
index 0000000..022429b
--- /dev/null
+++ b/libgamma_linux_drm_crtc_initialise.c
@@ -0,0 +1,24 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+/**
+ * Initialise an allocated CRTC state
+ *
+ * @param this The CRTC state to initialise
+ * @param partition The partition state for the partition that the CRTC belongs to
+ * @param crtc The the index of the CRTC within the site
+ * @return Zero on success, otherwise (negative) the value of an
+ * error identifier provided by this library
+ */
+int
+libgamma_linux_drm_crtc_initialise(libgamma_crtc_state_t *restrict this,
+ libgamma_partition_state_t *restrict partition, size_t crtc)
+{
+ libgamma_drm_card_data_t *restrict card = partition->data;
+
+ if (crtc >= partition->crtcs_available)
+ return LIBGAMMA_NO_SUCH_CRTC;
+ this->data = (void*)(size_t)card->res->crtcs[crtc];
+ return 0;
+}