From: Taimur Hassan <Syed.Hassan@amd.com>
Date: Thu, 12 Feb 2026 21:49:15 +0000 (-0500)
Subject: drm/amd/display: [FW Promotion] Release 0.1.48.0
X-Git-Tag: v7.1-rc1~167^2~31^2~92
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=72835a05dbb78ddfc469acb7610d1d96824c4704;p=thirdparty%2Fkernel%2Flinux.git

drm/amd/display: [FW Promotion] Release 0.1.48.0

[Why&How]
Introduce DMUB IHC command.

Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Taimur Hassan <Syed.Hassan@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
index 6f388c910e18a..2abbc6c97850a 100644
--- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
+++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h
@@ -1897,6 +1897,10 @@ enum dmub_cmd_type {
 	 */
 	DMUB_CMD__PR = 94,
 
+	/**
+	 * Command type used for all IHC commands.
+	 */
+	DMUB_CMD__IHC = 95,
 
 	/**
 	 * Command type use for VBIOS shared commands.
@@ -4959,6 +4963,52 @@ union dmub_replay_cmd_set {
 	struct dmub_cmd_replay_set_general_cmd_data set_general_cmd_data;
 };
 
+/**
+ * IHC command sub-types.
+ */
+enum dmub_cmd_ihc_type {
+	/**
+	 * Set DIG HDCP interrupt destination.
+	 */
+	DMUB_CMD__IHC_SET_DIG_HDCP_INTERRUPT_DEST = 0,
+};
+
+/**
+ * Data passed from driver to FW in a DMUB_CMD__IHC command.
+ */
+struct dmub_cmd_ihc_data {
+	/**
+	 * DIG engine ID (0-3).
+	 */
+	uint8_t dig_id;
+	/**
+	 * 1 = route to DMU, 0 = route to CPU.
+	 */
+	uint8_t to_dmu : 1;
+	/**
+	 * Reserved bits.
+	 */
+	uint8_t reserved : 7;
+	/**
+	 * Padding.
+	 */
+	uint8_t pad[2];
+};
+
+/**
+ * Definition of a DMUB_CMD__IHC command.
+ */
+struct dmub_rb_cmd_ihc {
+	/**
+	 * Command header.
+	 */
+	struct dmub_cmd_header header;
+	/**
+	 * IHC command data.
+	 */
+	struct dmub_cmd_ihc_data data;
+};
+
 /**
  * SMART POWER OLED command sub-types.
  */
@@ -7142,6 +7192,10 @@ union dmub_rb_cmd {
 	struct dmub_rb_cmd_pr_update_state pr_update_state;
 
 	struct dmub_rb_cmd_pr_general_cmd pr_general_cmd;
+	/**
+	 * Definition of a DMUB_CMD__IHC command.
+	 */
+	struct dmub_rb_cmd_ihc ihc;
 };
 
 /**