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authorLeo Li <sunpeng.li@amd.com>2018-10-31 17:07:41 -0400
committerAlex Deucher <alexander.deucher@amd.com>2018-12-18 17:39:56 -0500
commit1c01a45a86ed6991953e74be63b6a7e33b387954 (patch)
treed9c2d344de8df386de2afc06063f72898b3643e0 /drivers/gpu/drm
parentb8b6ce89016485cb92fdf2f527b40249aefbc470 (diff)
drm/amd/display: Add functionality to get XGMI SS info
[Why] When XGMI is enabled, the DP reference clock needs to be adjusted according to the XGMI spread spectrum percentage and mode. But first, we need the ability to fetch this info. [How] Within the BIOS parser, Read from vBIOS when XGMI SS info is requested. In addition, diags build uses include_legacy/atomfirmware.h for the smu_info_v3_3 table headers. Update that as well. Signed-off-by: Leo Li <sunpeng.li@amd.com> Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> Acked-by: Tony Cheng <Tony.Cheng@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm')
-rw-r--r--drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c15
-rw-r--r--drivers/gpu/drm/amd/display/include/bios_parser_types.h1
2 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
index 751bb614fc0e..c513ab6f3843 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
@@ -638,6 +638,7 @@ static enum bp_result get_ss_info_v4_1(
{
enum bp_result result = BP_RESULT_OK;
struct atom_display_controller_info_v4_1 *disp_cntl_tbl = NULL;
+ struct atom_smu_info_v3_3 *smu_info = NULL;
if (!ss_info)
return BP_RESULT_BADINPUT;
@@ -650,6 +651,7 @@ static enum bp_result get_ss_info_v4_1(
if (!disp_cntl_tbl)
return BP_RESULT_BADBIOSTABLE;
+
ss_info->type.STEP_AND_DELAY_INFO = false;
ss_info->spread_percentage_divider = 1000;
/* BIOS no longer uses target clock. Always enable for now */
@@ -688,6 +690,19 @@ static enum bp_result get_ss_info_v4_1(
*/
result = BP_RESULT_UNSUPPORTED;
break;
+ case AS_SIGNAL_TYPE_XGMI:
+ smu_info = GET_IMAGE(struct atom_smu_info_v3_3,
+ DATA_TABLES(smu_info));
+ if (!smu_info)
+ return BP_RESULT_BADBIOSTABLE;
+
+ ss_info->spread_spectrum_percentage =
+ smu_info->waflclk_ss_percentage;
+ ss_info->spread_spectrum_range =
+ smu_info->gpuclk_ss_rate_10hz * 10;
+ if (smu_info->waflclk_ss_mode & ATOM_SS_CENTRE_SPREAD_MODE)
+ ss_info->type.CENTER_MODE = true;
+ break;
default:
result = BP_RESULT_UNSUPPORTED;
}
diff --git a/drivers/gpu/drm/amd/display/include/bios_parser_types.h b/drivers/gpu/drm/amd/display/include/bios_parser_types.h
index f8dbfa5b89f2..7fd78a696800 100644
--- a/drivers/gpu/drm/amd/display/include/bios_parser_types.h
+++ b/drivers/gpu/drm/amd/display/include/bios_parser_types.h
@@ -41,6 +41,7 @@ enum as_signal_type {
AS_SIGNAL_TYPE_LVDS,
AS_SIGNAL_TYPE_DISPLAY_PORT,
AS_SIGNAL_TYPE_GPU_PLL,
+ AS_SIGNAL_TYPE_XGMI,
AS_SIGNAL_TYPE_UNKNOWN
};