Add helper functions dsc with big joiner helper functions.

Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
---
 tests/intel/kms_dsc_helper.c | 32 ++++++++++++++++++++++++++++++++
 tests/intel/kms_dsc_helper.h |  3 +++
 2 files changed, 35 insertions(+)

diff --git a/tests/intel/kms_dsc_helper.c b/tests/intel/kms_dsc_helper.c
index 58057aca3..91ce21062 100644
--- a/tests/intel/kms_dsc_helper.c
+++ b/tests/intel/kms_dsc_helper.c
@@ -7,8 +7,10 @@
 
 static bool force_dsc_en_orig;
 static bool force_dsc_fractional_bpp_en_orig;
+static bool force_dsc_bigjoiner_en_orig;
 static int force_dsc_restore_fd = -1;
 static int force_dsc_fractional_bpp_restore_fd = -1;
+static int force_dsc_bigjoiner_restore_fd = -1;
 
 void force_dsc_enable(int drmfd, igt_output_t *output)
 {
@@ -201,3 +203,33 @@ bool is_dsc_fractional_bpp_supported(int disp_ver, int drmfd, igt_output_t *outp
 
 	return true;
 }
+
+void force_dsc_bigjoiner_enable(int drmfd, igt_output_t *output)
+{
+	int ret;
+
+	igt_debug("Forcing DSC Big Joiner on %s\n", output->name);
+	ret = igt_force_bigjoiner_enable(drmfd, output->name);
+	igt_assert_f(ret == 0, "forcing dsc big joiner debugfs_write failed\n");
+}
+
+void save_force_dsc_bigjoiner_en(int drmfd, igt_output_t *output)
+{
+	force_dsc_bigjoiner_en_orig =
+		igt_is_force_bigjoiner_enabled(drmfd, output->name);
+	force_dsc_bigjoiner_restore_fd =
+		igt_get_bigjoiner_debugfs_fd(drmfd, output->name);
+	igt_assert(force_dsc_bigjoiner_restore_fd >= 0);
+}
+
+void restore_force_dsc_bigjoiner_en(void)
+{
+	if (force_dsc_bigjoiner_restore_fd < 0)
+		return;
+
+	igt_debug("Restoring DSC Big Joiner enable\n");
+	igt_assert(write(force_dsc_bigjoiner_restore_fd, force_dsc_bigjoiner_en_orig ? "1" : "0", 1) == 1);
+
+	close(force_dsc_bigjoiner_restore_fd);
+	force_dsc_bigjoiner_restore_fd = -1;
+}

Hello Swati,

These functions (force_dsc_enable, save_force_dsc_bigjoiner_en and restore_force_dsc_bigjoiner_en) seems to be generic and not dsc specific.
Can this be somewhere where other IGT"s can use them?


Thanks and Regards
Kunal Joshi