[PATCH v7 05/14] drm/i915/display: Add crtc state for DIP transmission lines

[Ankit Nautiyal <ankit.k.nautiyal@intel.com>]

The Adaptive Sync SDP is currently the only packet with a programmable
transmission line.

Make a structure struct intel_dip for Data Island Packets. Add a member to
track Adaptive-Sync SDP transmission line. Include the new member in the
pipe configuration comparison.

This will pave the way for supporting more packets' programmable
transmission lines, including the common base SDP transmission line
introduced with Xe3p_lpd.

v2:
 - Move struct intel_dip from intel_dip.h to intel_display_types.h (Jani)
 - Move PIPE_CONF_CHECK for emp_as_sdp_tl in !fastset block. (Sashiko)

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com> (#v1)
---
 drivers/gpu/drm/i915/display/intel_display.c       |  1 +
 drivers/gpu/drm/i915/display/intel_display_types.h | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 9151ea6c15ab..5e8f2e48e95b 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -5602,6 +5602,7 @@ intel_pipe_config_compare(const struct intel_crtc_state *current_config,
 		PIPE_CONF_CHECK_I(vrr.dc_balance.max_increase);
 		PIPE_CONF_CHECK_I(vrr.dc_balance.max_decrease);
 		PIPE_CONF_CHECK_I(vrr.dc_balance.vblank_target);
+		PIPE_CONF_CHECK_I(dip.emp_as_sdp_tl);
 	}
 
 	if (!fastset || intel_vrr_always_use_vrr_tg(display)) {
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index a5f18ac8a7d0..334179685ea2 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1007,6 +1007,14 @@ struct intel_casf {
 	bool enable;
 };
 
+struct intel_dip {
+	/*
+	 * DIP Transmission line, relative to the Vtotal.
+	 * The programmed transmit line is (Vtotal - value)
+	 */
+	u16 emp_as_sdp_tl;
+};
+
 struct intel_crtc_state {
 	/*
 	 * uapi (drm) state. This is the software state shown to userspace.
@@ -1315,6 +1323,8 @@ struct intel_crtc_state {
 		struct drm_dp_as_sdp as_sdp;
 	} infoframes;
 
+	struct intel_dip dip;
+
 	u8 eld[MAX_ELD_BYTES];
 
 	/* HDMI scrambling status */
-- 
2.50.1