This patch implements "verify_crc_source" callback function for
rcar drm driver.
Changes Since V1:
- avoid duplication of code
Signed-off-by: Mahesh Kumar <mahesh1.kumar@xxxxxxxxx>
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 66 +++++++++++++++++++++++++++-------
1 file changed, 53 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
index 15dc9caa128b..7124918372f8 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -756,17 +756,66 @@ static void rcar_du_crtc_disable_vblank(struct drm_crtc *crtc)
rcrtc->vblank_enable = false;
}
+static int rcar_du_get_plane_index(struct drm_crtc *crtc,
+ const char *source_name,
+ unsigned int *index)
+{
+ struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
+ unsigned int i;
+ int ret = 0;
+
+ 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;
+
+ return ret;
+}
+
+static int rcar_du_crtc_verify_crc_source(struct drm_crtc *crtc,
+ const char *source_name,
+ size_t *values_cnt)
+{
+ int ret;
+ unsigned int index;
+ /*
+ * 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 = rcar_du_get_plane_index(crtc, source_name, &index);
+ if (ret < 0)
+ return ret;
+ } 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)
{
- struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
struct drm_modeset_acquire_ctx ctx;
struct drm_crtc_state *crtc_state;
struct drm_atomic_state *state;
enum vsp1_du_crc_source source;
unsigned int index = 0;
- unsigned int i;
int ret;
/*
@@ -781,19 +830,9 @@ static int rcar_du_crtc_set_crc_source(struct drm_crtc *crtc,
} else if (strstarts(source_name, "plane")) {
source = VSP1_DU_CRC_PLANE;
- ret = kstrtouint(source_name + strlen("plane"), 10, &index);
+ ret = rcar_du_get_plane_index(crtc, source_name, &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;
}
@@ -861,6 +900,7 @@ 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,
};
/* -----------------------------------------------------------------------------
--
2.16.2
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