[PATCH 01/21] drm/amd/display: BIOS LTTPR Caps Interface
Anson Jacob
Anson.Jacob at amd.com
Fri Mar 26 22:05:14 UTC 2021
From: Wesley Chalmers <Wesley.Chalmers at amd.com>
[WHY]
Some platforms will have LTTPR capabilities forced on by VBIOS flags;
the functions added here will access those flags.
Signed-off-by: Wesley Chalmers <Wesley.Chalmers at amd.com>
Reviewed-by: Jun Lei <Jun.Lei at amd.com>
Acked-by: Anson Jacob <Anson.Jacob at amd.com>
---
.../drm/amd/display/dc/bios/bios_parser2.c | 139 ++++++++++++++++++
.../gpu/drm/amd/display/dc/dc_bios_types.h | 3 +
drivers/gpu/drm/amd/include/atomfirmware.h | 37 ++++-
3 files changed, 178 insertions(+), 1 deletion(-)
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 b208f06ed514..2ee0c6fc069a 100644
--- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
+++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c
@@ -916,6 +916,143 @@ static enum bp_result bios_parser_get_soc_bb_info(
return result;
}
+static enum bp_result get_lttpr_caps_v4_1(
+ struct bios_parser *bp,
+ uint8_t *dce_caps)
+{
+ enum bp_result result = BP_RESULT_OK;
+ struct atom_display_controller_info_v4_1 *disp_cntl_tbl = NULL;
+
+ if (!dce_caps)
+ return BP_RESULT_BADINPUT;
+
+ if (!DATA_TABLES(dce_info))
+ return BP_RESULT_BADBIOSTABLE;
+
+ disp_cntl_tbl = GET_IMAGE(struct atom_display_controller_info_v4_1,
+ DATA_TABLES(dce_info));
+
+ if (!disp_cntl_tbl)
+ return BP_RESULT_BADBIOSTABLE;
+
+ *dce_caps = !!(disp_cntl_tbl->display_caps & DCE_INFO_CAPS_LTTPR_SUPPORT_ENABLE);
+
+ return result;
+}
+
+static enum bp_result get_lttpr_caps_v4_2(
+ struct bios_parser *bp,
+ uint8_t *dce_caps)
+{
+ enum bp_result result = BP_RESULT_OK;
+ struct atom_display_controller_info_v4_2 *disp_cntl_tbl = NULL;
+
+ if (!dce_caps)
+ return BP_RESULT_BADINPUT;
+
+ if (!DATA_TABLES(dce_info))
+ return BP_RESULT_BADBIOSTABLE;
+
+ disp_cntl_tbl = GET_IMAGE(struct atom_display_controller_info_v4_2,
+ DATA_TABLES(dce_info));
+
+ if (!disp_cntl_tbl)
+ return BP_RESULT_BADBIOSTABLE;
+
+ *dce_caps = !!(disp_cntl_tbl->display_caps & DCE_INFO_CAPS_LTTPR_SUPPORT_ENABLE);
+
+ return result;
+}
+
+static enum bp_result get_lttpr_caps_v4_3(
+ struct bios_parser *bp,
+ uint8_t *dce_caps)
+{
+ enum bp_result result = BP_RESULT_OK;
+ struct atom_display_controller_info_v4_3 *disp_cntl_tbl = NULL;
+
+ if (!dce_caps)
+ return BP_RESULT_BADINPUT;
+
+ if (!DATA_TABLES(dce_info))
+ return BP_RESULT_BADBIOSTABLE;
+
+ disp_cntl_tbl = GET_IMAGE(struct atom_display_controller_info_v4_3,
+ DATA_TABLES(dce_info));
+
+ if (!disp_cntl_tbl)
+ return BP_RESULT_BADBIOSTABLE;
+
+ *dce_caps = !!(disp_cntl_tbl->display_caps & DCE_INFO_CAPS_LTTPR_SUPPORT_ENABLE);
+
+ return result;
+}
+
+static enum bp_result get_lttpr_caps_v4_4(
+ struct bios_parser *bp,
+ uint8_t *dce_caps)
+{
+ enum bp_result result = BP_RESULT_OK;
+ struct atom_display_controller_info_v4_4 *disp_cntl_tbl = NULL;
+
+ if (!dce_caps)
+ return BP_RESULT_BADINPUT;
+
+ if (!DATA_TABLES(dce_info))
+ return BP_RESULT_BADBIOSTABLE;
+
+ disp_cntl_tbl = GET_IMAGE(struct atom_display_controller_info_v4_4,
+ DATA_TABLES(dce_info));
+
+ if (!disp_cntl_tbl)
+ return BP_RESULT_BADBIOSTABLE;
+
+ *dce_caps = !!(disp_cntl_tbl->display_caps & DCE_INFO_CAPS_LTTPR_SUPPORT_ENABLE);
+
+ return result;
+}
+
+static enum bp_result bios_parser_get_lttpr_caps(
+ struct dc_bios *dcb,
+ uint8_t *dce_caps)
+{
+ struct bios_parser *bp = BP_FROM_DCB(dcb);
+ enum bp_result result = BP_RESULT_UNSUPPORTED;
+ struct atom_common_table_header *header;
+ struct atom_data_revision tbl_revision;
+
+ if (!DATA_TABLES(dce_info))
+ return BP_RESULT_UNSUPPORTED;
+
+ header = GET_IMAGE(struct atom_common_table_header,
+ DATA_TABLES(dce_info));
+ get_atom_data_table_revision(header, &tbl_revision);
+ switch (tbl_revision.major) {
+ case 4:
+ switch (tbl_revision.minor) {
+ case 1:
+ result = get_lttpr_caps_v4_1(bp, dce_caps);
+ break;
+ case 2:
+ result = get_lttpr_caps_v4_2(bp, dce_caps);
+ break;
+ case 3:
+ result = get_lttpr_caps_v4_3(bp, dce_caps);
+ break;
+ case 4:
+ result = get_lttpr_caps_v4_4(bp, dce_caps);
+ break;
+ default:
+ break;
+ }
+ break;
+ default:
+ break;
+ }
+
+ return result;
+}
+
static enum bp_result get_embedded_panel_info_v2_1(
struct bios_parser *bp,
struct embedded_panel_info *info)
@@ -2531,6 +2668,8 @@ static const struct dc_vbios_funcs vbios_funcs = {
.get_soc_bb_info = bios_parser_get_soc_bb_info,
.get_disp_connector_caps_info = bios_parser_get_disp_connector_caps_info,
+
+ .get_lttpr_caps = bios_parser_get_lttpr_caps,
};
static bool bios_parser2_construct(
diff --git a/drivers/gpu/drm/amd/display/dc/dc_bios_types.h b/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
index 86ab8f16f621..1b957c60156b 100644
--- a/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
+++ b/drivers/gpu/drm/amd/display/dc/dc_bios_types.h
@@ -150,6 +150,9 @@ struct dc_vbios_funcs {
struct dc_bios *dcb,
struct graphics_object_id object_id,
struct bp_disp_connector_caps_info *info);
+ enum bp_result (*get_lttpr_caps)(
+ struct dc_bios *dcb,
+ uint8_t *dce_caps);
};
struct bios_registers {
diff --git a/drivers/gpu/drm/amd/include/atomfirmware.h b/drivers/gpu/drm/amd/include/atomfirmware.h
index 58364a8eb1f3..82b3cd89b383 100644
--- a/drivers/gpu/drm/amd/include/atomfirmware.h
+++ b/drivers/gpu/drm/amd/include/atomfirmware.h
@@ -981,6 +981,40 @@ struct atom_display_controller_info_v4_2
uint8_t reserved3[8];
};
+struct atom_display_controller_info_v4_3
+{
+ struct atom_common_table_header table_header;
+ uint32_t display_caps;
+ uint32_t bootup_dispclk_10khz;
+ uint16_t dce_refclk_10khz;
+ uint16_t i2c_engine_refclk_10khz;
+ uint16_t dvi_ss_percentage; // in unit of 0.001%
+ uint16_t dvi_ss_rate_10hz;
+ uint16_t hdmi_ss_percentage; // in unit of 0.001%
+ uint16_t hdmi_ss_rate_10hz;
+ uint16_t dp_ss_percentage; // in unit of 0.001%
+ uint16_t dp_ss_rate_10hz;
+ uint8_t dvi_ss_mode; // enum of atom_spread_spectrum_mode
+ uint8_t hdmi_ss_mode; // enum of atom_spread_spectrum_mode
+ uint8_t dp_ss_mode; // enum of atom_spread_spectrum_mode
+ uint8_t ss_reserved;
+ uint8_t dfp_hardcode_mode_num; // DFP hardcode mode number defined in StandardVESA_TimingTable when EDID is not available
+ uint8_t dfp_hardcode_refreshrate;// DFP hardcode mode refreshrate defined in StandardVESA_TimingTable when EDID is not available
+ uint8_t vga_hardcode_mode_num; // VGA hardcode mode number defined in StandardVESA_TimingTable when EDID is not avablable
+ uint8_t vga_hardcode_refreshrate;// VGA hardcode mode number defined in StandardVESA_TimingTable when EDID is not avablable
+ uint16_t dpphy_refclk_10khz;
+ uint16_t reserved2;
+ uint8_t dcnip_min_ver;
+ uint8_t dcnip_max_ver;
+ uint8_t max_disp_pipe_num;
+ uint8_t max_vbios_active_disp_pipe_num;
+ uint8_t max_ppll_num;
+ uint8_t max_disp_phy_num;
+ uint8_t max_aux_pairs;
+ uint8_t remotedisplayconfig;
+ uint8_t reserved3[8];
+};
+
struct atom_display_controller_info_v4_4 {
struct atom_common_table_header table_header;
uint32_t display_caps;
@@ -1043,7 +1077,8 @@ enum dce_info_caps_def
DCE_INFO_CAPS_DISABLE_DFP_DP_HBR2 =0x04,
// only for VBIOS
DCE_INFO_CAPS_ENABLE_INTERLAC_TIMING =0x08,
-
+ // only for VBIOS
+ DCE_INFO_CAPS_LTTPR_SUPPORT_ENABLE =0x20,
};
/*
--
2.25.1
More information about the amd-gfx
mailing list