[v2] tests/intel/kms_dsc: add new constraint

[Swati Sharma]

If output max bpc is less than min dsc bpc (8) which is supported
by intel driver, don't execute test.

v2: -club all checks together (Ankit)

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1066
Signed-off-by: Swati Sharma <swati2.sharma at intel.com>
---
 tests/intel/kms_dsc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/tests/intel/kms_dsc.c b/tests/intel/kms_dsc.c
index 3433e0907..b5c0fa6ab 100644
--- a/tests/intel/kms_dsc.c
+++ b/tests/intel/kms_dsc.c
@@ -63,6 +63,7 @@ IGT_TEST_DESCRIPTION("Test to validate display stream compression");
 
 #define LEN		20
 #define DEFAULT_BPC	0
+#define MIN_DSC_BPC	8
 
 #define TEST_DSC_BASIC		(0<<0)
 #define TEST_DSC_BPC		(1<<0)
@@ -279,8 +280,9 @@ static void test_dsc(data_t *data, uint32_t test_type, int bpc,
 		data->output = output;
 		data->pipe = pipe;
 
-		if (!(is_dsc_supported_by_sink(data->drm_fd, data->output) &&
-		      check_gen11_dp_constraint(data->drm_fd, data->output, data->pipe)))
+		if (!is_dsc_supported_by_sink(data->drm_fd, data->output) ||
+		    !check_gen11_dp_constraint(data->drm_fd, data->output, data->pipe) ||
+		     igt_get_output_max_bpc(data->drm_fd, output->name) < MIN_DSC_BPC)
 			continue;
 
 		if ((test_type & TEST_DSC_OUTPUT_FORMAT) &&
-- 
2.25.1