When receiving video it is very useful to be able to log DP VSC SDP.
This greatly simplifies debugging.
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dp.c | 173 ++++++++++++++++++++++++
drivers/gpu/drm/i915/display/intel_dp.h | 4 +
2 files changed, 177 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 6756030692c8..e33488222ac5 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5090,6 +5090,179 @@ void intel_read_dp_sdp(struct intel_encoder *encoder,
}
}
+static const char *dp_colorspace_get_name(enum dp_colorspace colorspace)
+{
+ if (colorspace < 0 || colorspace > DP_COLORSPACE_RESERVED)
+ return "Invalid";
+
+ switch (colorspace) {
+ case DP_COLORSPACE_RGB:
+ return "RGB";
+ case DP_COLORSPACE_YUV444:
+ return "YUV444";
+ case DP_COLORSPACE_YUV422:
+ return "YUV422";
+ case DP_COLORSPACE_YUV420:
+ return "YUV420";
+ case DP_COLORSPACE_Y_ONLY:
+ return "Y_ONLY";
+ case DP_COLORSPACE_RAW:
+ return "RAW";
+ default:
+ return "Reserved";
+ }
+}
+
+static const char *dp_colorimetry_get_name(enum dp_colorspace colorspace,
+ enum dp_colorimetry colorimetry)
+{
+ if (colorspace < 0 || colorspace > DP_COLORSPACE_RESERVED)
+ return "Invalid";
+
+ switch (colorimetry) {
+ case DP_COLORIMETRY_DEFAULT:
+ switch (colorspace) {
+ case DP_COLORSPACE_RGB:
+ return "sRGB";
+ case DP_COLORSPACE_YUV444:
+ case DP_COLORSPACE_YUV422:
+ case DP_COLORSPACE_YUV420:
+ return "BT.601";
+ case DP_COLORSPACE_Y_ONLY:
+ return "DICOM PS3.14";
+ case DP_COLORSPACE_RAW:
+ return "Custom Color Profile";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_RGB_WIDE_FIXED: /* and DP_COLORIMETRY_BT709_YCC */
+ switch (colorspace) {
+ case DP_COLORSPACE_RGB:
+ return "Wide Fixed";
+ case DP_COLORSPACE_YUV444:
+ case DP_COLORSPACE_YUV422:
+ case DP_COLORSPACE_YUV420:
+ return "BT.709";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_RGB_WIDE_FLOAT: /* and DP_COLORIMETRY_XVYCC_601 */
+ switch (colorspace) {
+ case DP_COLORSPACE_RGB:
+ return "Wide Float";
+ case DP_COLORSPACE_YUV444:
+ case DP_COLORSPACE_YUV422:
+ case DP_COLORSPACE_YUV420:
+ return "xvYCC 601";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_OPRGB: /* and DP_COLORIMETRY_XVYCC_709 */
+ switch (colorspace) {
+ case DP_COLORSPACE_RGB:
+ return "OpRGB";
+ case DP_COLORSPACE_YUV444:
+ case DP_COLORSPACE_YUV422:
+ case DP_COLORSPACE_YUV420:
+ return "xvYCC 709";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_DCI_P3_RGB: /* and DP_COLORIMETRY_SYCC_601 */
+ switch (colorspace) {
+ case DP_COLORSPACE_RGB:
+ return "DCI-P3";
+ case DP_COLORSPACE_YUV444:
+ case DP_COLORSPACE_YUV422:
+ case DP_COLORSPACE_YUV420:
+ return "sYCC 601";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_RGB_CUSTOM: /* and DP_COLORIMETRY_OPYCC_601 */
+ switch (colorspace) {
+ case DP_COLORSPACE_RGB:
+ return "Custom Profile";
+ case DP_COLORSPACE_YUV444:
+ case DP_COLORSPACE_YUV422:
+ case DP_COLORSPACE_YUV420:
+ return "OpYCC 601";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_BT2020_RGB: /* and DP_COLORIMETRY_BT2020_CYCC */
+ switch (colorspace) {
+ case DP_COLORSPACE_RGB:
+ return "BT.2020 RGB";
+ case DP_COLORSPACE_YUV444:
+ case DP_COLORSPACE_YUV422:
+ case DP_COLORSPACE_YUV420:
+ return "BT.2020 CYCC";
+ default:
+ return "Reserved";
+ }
+ case DP_COLORIMETRY_BT2020_YCC:
+ switch (colorspace) {
+ case DP_COLORSPACE_YUV444:
+ case DP_COLORSPACE_YUV422:
+ case DP_COLORSPACE_YUV420:
+ return "BT.2020 YCC";
+ default:
+ return "Reserved";
+ }
+ default:
+ return "Invalid";
+ }
+}
+
+static const char *dp_dynamic_range_get_name(enum dp_dynamic_range dynamic_range)
+{
+ switch (dynamic_range) {
+ case DP_DYNAMIC_RANGE_VESA:
+ return "VESA range";
+ case DP_DYNAMIC_RANGE_CTA:
+ return "CTA range";
+ default:
+ return "Invalid";
+ }
+}
+
+static const char *dp_content_type_get_name(enum dp_content_type content_type)
+{
+ switch (content_type) {
+ case DP_CONTENT_TYPE_NOT_DEFINED:
+ return "Not defined";
+ case DP_CONTENT_TYPE_GRAPHICS:
+ return "Graphics";
+ case DP_CONTENT_TYPE_PHOTO:
+ return "Photo";
+ case DP_CONTENT_TYPE_VIDEO:
+ return "Video";
+ case DP_CONTENT_TYPE_GAME:
+ return "Game";
+ default:
+ return "Reserved";
+ }
+}
+
+#define dp_sdp_log(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__)
+void intel_dp_vsc_sdp_log(const char *level, struct device *dev,
+ const struct intel_dp_vsc_sdp *vsc)
+{
+ dp_sdp_log("DP SDP: %s, revision %u, length %u\n", "VSC",
+ vsc->revision, vsc->length);
+ dp_sdp_log(" colorspace: %s\n",
+ dp_colorspace_get_name(vsc->colorspace));
+ dp_sdp_log(" colorimetry: %s\n",
+ dp_colorimetry_get_name(vsc->colorspace, vsc->colorimetry));
+ dp_sdp_log(" bpc: %u\n",vsc->bpc);
+ dp_sdp_log(" dynamic range: %s\n",
+ dp_dynamic_range_get_name(vsc->dynamic_range));
+ dp_sdp_log(" content type: %s\n",
+ dp_content_type_get_name(vsc->content_type));
+}
+#undef dp_sdp_log
+
static void
intel_dp_setup_vsc_sdp(struct intel_dp *intel_dp,
const struct intel_crtc_state *crtc_state,
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index e8f9ba962d09..03b300b58fd0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -7,6 +7,7 @@
#define __INTEL_DP_H__
#include <linux/types.h>
+#include <linux/device.h>
#include <drm/i915_drm.h>
@@ -23,6 +24,7 @@ struct intel_crtc_state;
struct intel_digital_port;
struct intel_dp;
struct intel_encoder;
+struct intel_dp_vsc_sdp;
struct link_config_limits {
int min_clock, max_clock;
@@ -122,6 +124,8 @@ void intel_dp_set_infoframes(struct intel_encoder *encoder, bool enable,
void intel_read_dp_sdp(struct intel_encoder *encoder,
struct intel_crtc_state *crtc_state,
unsigned int type);
+void intel_dp_vsc_sdp_log(const char *level, struct device *dev,
+ const struct intel_dp_vsc_sdp *vsc);
bool intel_digital_port_connected(struct intel_encoder *encoder);
static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
--
2.24.1
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