@@ -756,6 +756,47 @@ static void rcar_du_crtc_disable_vblank(struct drm_crtc *crtc)
rcrtc->vblank_enable = false;
}
+
+static int rcar_du_crtc_verify_crc_source(struct drm_crtc *crtc,
+ const char *source_name,
+ size_t *values_cnt)
+{
+ struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
+ unsigned int index = 0;
+ unsigned int i;
+ int ret;
+
+ /*
+ * Parse the source name. Supported values are "plane%u" to compute the
+ * CRC on an input plane (%u is the plane ID), and "auto" to compute the
+ * CRC on the composer (VSP) output.
+ */
+ if (!source_name || !strcmp(source_name, "auto")) {
+ goto out;
+ } else if (strstarts(source_name, "plane")) {
+
+ ret = kstrtouint(source_name + strlen("plane"), 10, &index);
+ if (ret < 0)
+ return ret;
+
+ for (i = 0; i < rcrtc->vsp->num_planes; ++i) {
+ if (index == rcrtc->vsp->planes[i].plane.base.id) {
+ index = i;
+ break;
+ }
+ }
+
+ if (i >= rcrtc->vsp->num_planes)
+ return -EINVAL;
+ } else {
+ return -EINVAL;
+ }
+
+out:
+ *values_cnt = 1;
+ return 0;
+}
+
static int rcar_du_crtc_set_crc_source(struct drm_crtc *crtc,
const char *source_name,
size_t *values_cnt)
@@ -861,6 +902,7 @@ static const struct drm_crtc_funcs crtc_funcs_gen3 = {
.enable_vblank = rcar_du_crtc_enable_vblank,
.disable_vblank = rcar_du_crtc_disable_vblank,
.set_crc_source = rcar_du_crtc_set_crc_source,
+ .verify_crc_source = rcar_du_crtc_verify_crc_source,
};
/* -----------------------------------------------------------------------------
This patch implements "verify_crc_source" callback function for rcar drm driver. Signed-off-by: Mahesh Kumar <mahesh1.kumar@intel.com> --- drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 42 ++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+)