diff options
| author | Ovidiu Bunea <ovidiu.bunea@amd.com> | 2026-08-04 16:04:18 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-08-25 18:25:27 -0400 |
| commit | 3b381dc0ed89eb04c2b4ad2ed006fc15ee802d7f (patch) | |
| tree | 73996999344310f9e17272903e0c6079dad784a2 /drivers/gpu | |
| parent | 0dd25075be610e5a597fafa276a775ec4ebe6098 (diff) | |
| download | linux-next-3b381dc0ed89eb04c2b4ad2ed006fc15ee802d7f.tar.gz linux-next-3b381dc0ed89eb04c2b4ad2ed006fc15ee802d7f.zip | |
drm/amd/display: Add DC_BLS command
[why & how]
In the future, DC will off-load block-level initialization to DMUB.
In preparation, update dmub_cmd.h with the command for better tracking.
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Ovidiu Bunea <ovidiu.bunea@amd.com>
Signed-off-by: James Lin <pinglei.lin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 36 |
1 files changed, 36 insertions, 0 deletions
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 f0231f355fa7..c273d97ec88d 100644 --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h @@ -1170,6 +1170,16 @@ enum dmub_ips_comand_type { }; /** + * enum dmub_dc_bls_command_type - DC_BLS subcommands. + */ +enum dmub_dc_bls_command_type { + /** + * Placeholder for block-level initialization of the DCHVM + */ + DMUB_CMD__DC_BLS_DCHVM_INIT = 0, +}; + +/** * enum dmub_cursor_offload_comand_type - Cursor offload subcommands. */ enum dmub_cursor_offload_comand_type { @@ -2009,6 +2019,11 @@ enum dmub_cmd_type { DMUB_CMD__PANEL_POLARITY = 97, /** + * Command type used for all DC_BLS commands. + */ + DMUB_CMD__DC_BLS = 98, + + /** * Command type use for VBIOS shared commands. */ DMUB_CMD__VBIOS = 128, @@ -2941,6 +2956,25 @@ struct dmub_rb_cmd_idle_opt_dcn_notify_idle { }; /** + * Data passed from driver to FW in a DMUB_CMD__DC_BLS_DCHVM_INIT command. + */ +struct dmub_cmd_dc_bls_dchvm_init_data { + /** + * The value to program to rIOMMU PCTRL register. x86 cannot access this SMN + * register, so the write is performed by DMCUB on the driver's behalf. + */ + uint32_t riommu_pctrl_val; /* r */ +}; + +/** + * Definition of a DMUB_CMD__DC_BLS_DCHVM_INIT command. + */ +struct dmub_rb_cmd_dc_bls_dchvm_init { + struct dmub_cmd_header header; + struct dmub_cmd_dc_bls_dchvm_init_data data; +}; + +/** * enum dmub_idle_opt_dc_power_state - DC power states. */ enum dmub_idle_opt_dc_power_state { @@ -7988,6 +8022,8 @@ union dmub_rb_cmd { struct dmub_rb_cmd_panel_polarity_enable panel_polarity_enable; struct dmub_rb_cmd_panel_polarity_get_bias panel_polarity_get_bias; struct dmub_rb_cmd_panel_polarity_reset panel_polarity_reset; + + struct dmub_rb_cmd_dc_bls_dchvm_init dc_bls_dchvm_init; }; /** |