[PATCH] drm/amd/display: Reuse Subvp debug option for FAMS

[Aurabindo Pillai]

FAMS is the successor to SubVP starting with DCN4x. Reuse the same
debug option to disable FAMS for debugging purposes.

Signed-off-by: Aurabindo Pillai <aurabindo.pillai at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 4 +++-
 drivers/gpu/drm/amd/include/amd_shared.h          | 5 +++--
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index acb5a6baabf4..8a1bf7ab8570 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2000,8 +2000,10 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 	if (amdgpu_dc_debug_mask & DC_FORCE_SUBVP_MCLK_SWITCH)
 		adev->dm.dc->debug.force_subvp_mclk_switch = true;
 
-	if (amdgpu_dc_debug_mask & DC_DISABLE_SUBVP)
+	if (amdgpu_dc_debug_mask & DC_DISABLE_SUBVP_FAMS) {
 		adev->dm.dc->debug.force_disable_subvp = true;
+		adev->dm.dc->debug.fams2_config.enable = false;
+	}
 
 	if (amdgpu_dc_debug_mask & DC_ENABLE_DML2) {
 		adev->dm.dc->debug.using_dml2 = true;
diff --git a/drivers/gpu/drm/amd/include/amd_shared.h b/drivers/gpu/drm/amd/include/amd_shared.h
index 31de36c9156f..11374a2cbab8 100644
--- a/drivers/gpu/drm/amd/include/amd_shared.h
+++ b/drivers/gpu/drm/amd/include/amd_shared.h
@@ -351,9 +351,10 @@ enum DC_DEBUG_MASK {
 	DC_DISABLE_HDMI_CEC = 0x10000,
 
 	/**
-	 * @DC_DISABLE_SUBVP: If set, disable DCN Sub-Viewport feature in amdgpu driver.
+	 * @DC_DISABLE_SUBVP_FAMS: If set, disable DCN Sub-Viewport & Firmware Assisted
+	 * Memory Clock Switching (FAMS) feature in amdgpu driver.
 	 */
-	DC_DISABLE_SUBVP = 0x20000,
+	DC_DISABLE_SUBVP_FAMS = 0x20000,
 	/**
 	 * @DC_DISABLE_CUSTOM_BRIGHTNESS_CURVE: If set, disable support for custom brightness curves
 	 */
-- 
2.49.0