[Intel-gfx] [PATCH] drm/i915/tgl+: Fix HDMI transcoder clock vs. DDI BUF disabling order

[Imre Deak <imre.deak@intel.com>]

Starting with TGL the disabling order of HDMI transcoder clock vs. DDI
BUF has swapped, fix this. There hasn't been any issues seen related to
this, but let's follow the spec.

Reported-by: Sandeep K Lakkakula <sandeep.k.lakkakula@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 272e1bf6006be..4b874c31398a2 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -2691,10 +2691,14 @@ static void intel_ddi_post_disable_hdmi(struct intel_atomic_state *state,
 	dig_port->set_infoframes(encoder, false,
 				 old_crtc_state, old_conn_state);
 
-	intel_ddi_disable_pipe_clock(old_crtc_state);
+	if (DISPLAY_VER(dev_priv) < 12)
+		intel_ddi_disable_pipe_clock(old_crtc_state);
 
 	intel_disable_ddi_buf(encoder, old_crtc_state);
 
+	if (DISPLAY_VER(dev_priv) >= 12)
+		intel_ddi_disable_pipe_clock(old_crtc_state);
+
 	intel_display_power_put(dev_priv,
 				dig_port->ddi_io_power_domain,
 				fetch_and_zero(&dig_port->ddi_io_wakeref));
-- 
2.30.2