[PATCH] drm/i915/hdcp: Fix IS_METEORLAKE usage for HDCP line rekeying

[Suraj Kandpal]

Replace IS_METEORLAKE usage with a more appropriate macro. While
we are at it also add the stepping restrictions for other platforms.

Fixes: 6a3691ca4799 ("drm/i915/hdcp: Disable HDCP Line Rekeying for HDCP2.2 on HDMI")
Signed-off-by: Suraj Kandpal <suraj.kandpal at intel.com>
---
 drivers/gpu/drm/i915/display/intel_hdcp.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_hdcp.c b/drivers/gpu/drm/i915/display/intel_hdcp.c
index 02cbbbfd8e25..5767070248bb 100644
--- a/drivers/gpu/drm/i915/display/intel_hdcp.c
+++ b/drivers/gpu/drm/i915/display/intel_hdcp.c
@@ -42,10 +42,11 @@ intel_hdcp_disable_hdcp_line_rekeying(struct intel_encoder *encoder,
 		return;
 
 	if (DISPLAY_VER(dev_priv) >= 14) {
-		if (IS_METEORLAKE(dev_priv))
+		if (IS_DISPLAY_IP_STEP(dev_priv, IP_VER(14, 0), STEP_D0, STEP_FOREVER))
 			intel_de_rmw(dev_priv, MTL_CHICKEN_TRANS(hdcp->cpu_transcoder),
 				     0, HDCP_LINE_REKEY_DISABLE);
-		else
+		else if (IS_DISPLAY_IP_STEP(dev_priv, IP_VER(14, 1), STEP_B0, STEP_FOREVER) ||
+			 IS_DISPLAY_IP_STEP(dev_priv, IP_VER(20, 0), STEP_B0, STEP_FOREVER))
 			intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL(hdcp->cpu_transcoder),
 				     0, TRANS_DDI_HDCP_LINE_REKEY_DISABLE);
 	}
-- 
2.43.2