[PATCH i-g-t v10 32/49] lib/unigraf: Add unigraf CRC capture

[Louis Chauvet <louis.chauvet@bootlin.com>]

As unigraf devices are able to grab a CRC for the current video stream,
add an helper to read the CRC.

Reviewed-by: Kory Maincent <kory.maincent@bootlin.com>
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
---
 lib/vendor/unigraf/unigraf.c | 22 ++++++++++++++++++++++
 lib/vendor/unigraf/unigraf.h |  4 ++++
 2 files changed, 26 insertions(+)

diff --git a/lib/vendor/unigraf/unigraf.c b/lib/vendor/unigraf/unigraf.c
index 6a866bbb3765..7af7ed07642f 100644
--- a/lib/vendor/unigraf/unigraf.c
+++ b/lib/vendor/unigraf/unigraf.c
@@ -17,6 +17,7 @@
 #include "igt_aux.h"
 #include "igt_edid.h"
 #include "igt_kms.h"
+#include "igt_pipe_crc.h"
 #include "igt_rc.h"
 #include "monitor_edids/monitor_edids_helper.h"
 
@@ -665,3 +666,24 @@ void unigraf_select_stream(int stream)
 {
 	unigraf_write_u32(TSI_DPRX_STREAM_SELECT, stream);
 }
+
+/**
+ * unigraf_read_crc() - Read the CRC values from the Unigraf device
+ * @stream: Stream to grab the CRC from
+ * @out: Pointer to an igt_crc_t structure where the CRC values will be stored
+ *
+ * This function reads the CRC values from the Unigraf device and stores them in the
+ * provided igt_crc_t structure.
+ */
+void unigraf_read_crc(int stream, igt_crc_t *out)
+{
+	unigraf_select_stream(stream);
+	unigraf_assert(TSIX_TS_GetConfigItem(unigraf_device, TSI_DPRX_CRC_R_R,
+					     &out->crc[0], sizeof(out->crc[0])));
+	unigraf_assert(TSIX_TS_GetConfigItem(unigraf_device, TSI_DPRX_CRC_G_R,
+					     &out->crc[1], sizeof(out->crc[1])));
+	unigraf_assert(TSIX_TS_GetConfigItem(unigraf_device, TSI_DPRX_CRC_B_R,
+					     &out->crc[2], sizeof(out->crc[2])));
+	out->n_words = 3;
+	out->has_valid_frame = false;
+}
diff --git a/lib/vendor/unigraf/unigraf.h b/lib/vendor/unigraf/unigraf.h
index fdc4441740fa..67fb44db107b 100644
--- a/lib/vendor/unigraf/unigraf.h
+++ b/lib/vendor/unigraf/unigraf.h
@@ -13,6 +13,8 @@
 #include <stdint.h>
 #include <xf86drmMode.h>
 
+#include "igt_fb.h"
+
 /**
  * unigraf_assert: Helper macro to assert a TSI return value and retrieve a detailed error message.
  * @result: libTSI return value to check
@@ -71,4 +73,6 @@ int unigraf_get_mst_stream_max_count(void);
 
 void unigraf_select_stream(int stream);
 
+void unigraf_read_crc(int stream, igt_crc_t *out);
+
 #endif // UNIGRAF_H

-- 
2.52.0