This patch implements "verify_crc_source" callback function for
rcar drm driver.
Changes Since V1:
- avoid duplication of code
Changes Since V2:
- further optimize the code
Changes Since V3:
- Adopt to driver style
- Address review comments from Laurent Pinchart
Signed-off-by: Mahesh Kumar <mahesh1.ku...@intel.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Reviewed-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
---
drivers/gpu/drm/rcar-du/rcar_du_crtc.c | 69 ++++++++++++++++++++++++----------
1 file changed, 49 insertions(+), 20 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..80226cac88e2 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c
@@ -756,17 +756,11 @@ static void rcar_du_crtc_disable_vblank(struct drm_crtc
*crtc)
rcrtc->vblank_enable = false;
}
-static int rcar_du_crtc_set_crc_source(struct drm_crtc *crtc,
- const char *source_name,
- size_t *values_cnt)
+static int rcar_du_crtc_parse_crc_source(struct rcar_du_crtc *rcrtc,
+ const char *source_name,
+ enum vsp1_du_crc_source *source)
{
- 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;
+ unsigned int index;
int ret;
/*
@@ -774,30 +768,64 @@ static int rcar_du_crtc_set_crc_source(struct drm_crtc
*crtc,
* CRC on an input plane (%u is the plane ID), and "auto" to compute the
* CRC on the composer (VSP) output.
*/
+
if (!source_name) {
- source = VSP1_DU_CRC_NONE;
+ *source = VSP1_DU_CRC_NONE;
+ return 0;
} else if (!strcmp(source_name, "auto")) {
- source = VSP1_DU_CRC_OUTPUT;
+ *source = VSP1_DU_CRC_OUTPUT;
+ return 0;
} else if (strstarts(source_name, "plane")) {
- source = VSP1_DU_CRC_PLANE;
+ unsigned int i;
+
+ *source = VSP1_DU_CRC_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 (index == rcrtc->vsp->planes[i].plane.base.id)
+ return i;
}
+ }
- if (i >= rcrtc->vsp->num_planes)
- return -EINVAL;
- } else {
+ return -EINVAL;
+}
+
+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);
+ enum vsp1_du_crc_source source;
+
+ if (rcar_du_crtc_parse_crc_source(rcrtc, source_name, &source) < 0) {
+ DRM_DEBUG_DRIVER("unknown source %s\n", source_name);
return -EINVAL;
}
+ *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;
+ int ret;
+
+ ret = rcar_du_crtc_parse_crc_source(rcrtc, source_name, &source);
+ if (ret < 0)
+ return ret;
+
+ index = ret;
*values_cnt = 1;
/* Perform an atomic commit to set the CRC source. */
@@ -861,6 +889,7 @@ 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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