From 72835a05dbb78ddfc469acb7610d1d96824c4704 Mon Sep 17 00:00:00 2001 From: Taimur Hassan Date: Thu, 12 Feb 2026 16:49:15 -0500 Subject: [PATCH] drm/amd/display: [FW Promotion] Release 0.1.48.0 [Why&How] Introduce DMUB IHC command. Reviewed-by: Aurabindo Pillai Signed-off-by: Taimur Hassan Signed-off-by: Ivan Lipski Tested-by: Dan Wheeler Signed-off-by: Alex Deucher --- .../gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 54 +++++++++++++++++++ 1 file changed, 54 insertions(+) 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 6f388c910e18..2abbc6c97850 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; }; /**