When receiving video it is very useful to be able to log DP VSC SDP.
This greatly simplifies debugging.
v2: Minor style fix
v3: Move logging functions to drm core [Jani N]
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@xxxxxxxxx>
---
drivers/gpu/drm/drm_dp_helper.c | 174 ++++++++++++++++++++++++++++++++
include/drm/drm_dp_helper.h | 3 +
2 files changed, 177 insertions(+)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c
index 5a103e9b3c86..5e3aef8c32e0 100644
--- a/drivers/gpu/drm/drm_dp_helper.c
+++ b/drivers/gpu/drm/drm_dp_helper.c
@@ -1395,3 +1395,177 @@ int drm_dp_dsc_sink_supported_input_bpcs(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_S
return num_bpc;
}
EXPORT_SYMBOL(drm_dp_dsc_sink_supported_input_bpcs);
+
+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";
+ }
+}
+
+void drm_dp_vsc_sdp_log(const char *level, struct device *dev,
+ const struct drm_dp_vsc_sdp *vsc)
+{
+#define DP_SDP_LOG(fmt, ...) dev_printk(level, dev, fmt, ##__VA_ARGS__)
+ 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
+}
+EXPORT_SYMBOL(drm_dp_vsc_sdp_log);
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index c098727681fa..00b775df6241 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -1266,6 +1266,9 @@ struct drm_dp_vsc_sdp {
enum dp_content_type content_type;
};
+void drm_dp_vsc_sdp_log(const char *level, struct device *dev,
+ const struct drm_dp_vsc_sdp *vsc);
+
int drm_dp_psr_setup_time(const u8 psr_cap[EDP_PSR_RECEIVER_CAP_SIZE]);
static inline int
--
2.24.1
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