From: Alex Hung <[email protected]>

[WHAT]
Remove the redundant IP_VERSION(4, 2, 0) case from
dm_get_default_ips_mode() since it only reassigns the same
DMUB_IPS_ENABLE value already set at initialization.

Also remove the corresponding KUnit test.

Reviewed-by: Chenyu Chen <[email protected]>
Signed-off-by: Alex Hung <[email protected]>
Signed-off-by: George Zhang <[email protected]>
---
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_dmub.c |  4 ----
 .../amdgpu_dm/tests/amdgpu_dm_dmub_test.c      | 18 ------------------
 2 files changed, 22 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_dmub.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_dmub.c
index 579a435dcefc..4f5dd2158417 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_dmub.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_dmub.c
@@ -453,10 +453,6 @@ enum dmub_ips_disable_type dm_get_default_ips_mode(
        case IP_VERSION(3, 5, 1):
                ret =  DMUB_IPS_RCG_IN_ACTIVE_IPS2_IN_OFF;
                break;
-       case IP_VERSION(4, 2, 0):
-       case IP_VERSION(4, 2, 1):
-               ret =  DMUB_IPS_ENABLE;
-               break;
        default:
                /* ASICs older than DCN35 do not have IPSs */
                if (amdgpu_ip_version(adev, DCE_HWIP, 0) < IP_VERSION(3, 5, 0))
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_dmub_test.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_dmub_test.c
index b82dd301a896..bf90ccfbf431 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_dmub_test.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/tests/amdgpu_dm_dmub_test.c
@@ -350,23 +350,6 @@ static void dm_test_get_default_ips_mode_dcn36(struct 
kunit *test)
                        DMUB_IPS_RCG_IN_ACTIVE_IPS2_IN_OFF);
 }

-/**
- * dm_test_get_default_ips_mode_dcn42 - Test Get default ips mode dcn42
- * @test: The KUnit test context
- */
-static void dm_test_get_default_ips_mode_dcn42(struct kunit *test)
-{
-       struct amdgpu_device *adev;
-
-       adev = kunit_kzalloc(test, sizeof(*adev), GFP_KERNEL);
-       KUNIT_ASSERT_NOT_ERR_OR_NULL(test, adev);
-
-       adev->ip_versions[DCE_HWIP][0] = IP_VERSION(4, 2, 0);
-
-       KUNIT_EXPECT_EQ(test, dm_get_default_ips_mode(adev),
-                       DMUB_IPS_DISABLE_ALL);
-}
-
 /**
  * dm_test_get_default_ips_mode_older_than_dcn35 - Test Get default ips mode 
older than dcn35
  * @test: The KUnit test context
@@ -572,7 +555,6 @@ static struct kunit_case amdgpu_dm_dmub_tests[] = {
        KUNIT_CASE(dm_test_get_default_ips_mode_dcn35),
        KUNIT_CASE(dm_test_get_default_ips_mode_dcn351),
        KUNIT_CASE(dm_test_get_default_ips_mode_dcn36),
-       KUNIT_CASE(dm_test_get_default_ips_mode_dcn42),
        KUNIT_CASE(dm_test_get_default_ips_mode_older_than_dcn35),
        KUNIT_CASE(dm_test_get_default_ips_mode_newer_default),
        /* dm_dmub_hw_init() */
--
2.54.0

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