[igt-dev] [v4 10/10] tests/i915/kms_dsc: add test summary

[Swati Sharma <swati2.sharma@intel.com>]

Add test summary giving overall summary of subtests.

v2: -drop DSC1.2 reference (Ankit)

Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
---
 tests/i915/kms_dsc.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/tests/i915/kms_dsc.c b/tests/i915/kms_dsc.c
index bb6ea2133..089420cc5 100644
--- a/tests/i915/kms_dsc.c
+++ b/tests/i915/kms_dsc.c
@@ -43,6 +43,26 @@ IGT_TEST_DESCRIPTION("Test to validate display stream compression");
 #define TEST_DSC_OUTPUT_FORMAT	(1<<2)
 #define TEST_DSC_FRACTIONAL_BPP (1<<3)
 
+/*
+ * Starting from gen11, intel driver supports DSC1.1. For validating
+ * DSC, the first step is to verify if the sink supports DSC.
+ * If the sink does support DSC, we will validate the following
+ * scenarios. In all the scenarios, we are forcing dsc.
+ * (i) basic modeset (ii) input bpc (iii) pixel formats
+ * (iv) output formats (v) fractional bpp
+ * In the basic subtest, we perform modeset with default parameters.
+ * Input bpc and pixel formats subtests, we perform modeset
+ * with different input bpc (12/10/8) and pixel formats (YUV/RGB),
+ * respectively. From MTL+, we can verify fractional bpp and
+ * DSC YCBCR420 output format. The tests are executed with the
+ * RGB444 output format by default. However, in the output-format
+ * subtest, we verify output formats (RGB/YCBCR444/YCBCR420).
+ * Fractional bpp is tested with default parameter. In this,
+ * driver will ignore integer compressed bpp value and will do
+ * modeset with fractional bpp only. Also, tests are added to
+ * validate output format and fractional bpp with different input bpc.
+ */
+
 typedef struct {
 	int drm_fd;
 	uint32_t devid;
-- 
2.25.1