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Subject[PATCH v5 4/4] drm/rockchip: Implement CRC debugfs API
Date
Implement the .set_crc_source() callback and call the DP helpers
accordingly to start and stop CRC capture.

This is only done if this CRTC is currently using the eDP connector.

v3: Remove superfluous check on rockchip_crtc_state->output_type

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
---

drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 42 +++++++++++++++++++++++++++++
1 file changed, 42 insertions(+)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index fb5f001f51c3..6e5eb1aa182a 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -19,6 +19,7 @@
#include <drm/drm_crtc_helper.h>
#include <drm/drm_flip_work.h>
#include <drm/drm_plane_helper.h>
+#include <drm/bridge/analogix_dp.h>

#include <linux/kernel.h>
#include <linux/module.h>
@@ -1105,6 +1106,46 @@ static void vop_crtc_destroy_state(struct drm_crtc *crtc,
kfree(s);
}

+static struct drm_connector *vop_get_edp_connector(struct vop *vop)
+{
+ struct drm_crtc *crtc = &vop->crtc;
+ struct drm_connector *connector;
+
+ mutex_lock(&crtc->dev->mode_config.mutex);
+ drm_for_each_connector(connector, crtc->dev)
+ if (connector->connector_type == DRM_MODE_CONNECTOR_eDP) {
+ mutex_unlock(&crtc->dev->mode_config.mutex);
+ return connector;
+ }
+ mutex_unlock(&crtc->dev->mode_config.mutex);
+
+ return NULL;
+}
+
+static int vop_crtc_set_crc_source(struct drm_crtc *crtc,
+ const char *source_name, size_t *values_cnt)
+{
+ struct vop *vop = to_vop(crtc);
+ struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc->state);
+ struct drm_connector *connector;
+ int ret;
+
+ connector = vop_get_edp_connector(vop);
+ if (!connector)
+ return -EINVAL;
+
+ *values_cnt = 3;
+
+ if (source_name && strcmp(source_name, "auto") == 0)
+ ret = analogix_dp_start_crc(connector);
+ else if (!source_name)
+ ret = analogix_dp_stop_crc(connector);
+ else
+ ret = -EINVAL;
+
+ return ret;
+}
+
static const struct drm_crtc_funcs vop_crtc_funcs = {
.set_config = drm_atomic_helper_set_config,
.page_flip = drm_atomic_helper_page_flip,
@@ -1112,6 +1153,7 @@ static const struct drm_crtc_funcs vop_crtc_funcs = {
.reset = vop_crtc_reset,
.atomic_duplicate_state = vop_crtc_duplicate_state,
.atomic_destroy_state = vop_crtc_destroy_state,
+ .set_crc_source = vop_crtc_set_crc_source,
};

static void vop_fb_unref_worker(struct drm_flip_work *work, void *val)
--
2.9.3
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