diff options
author | Alvin Lee <alvin.lee2@amd.com> | 2020-06-11 16:37:13 -0400 |
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committer | Alex Deucher <alexander.deucher@amd.com> | 2020-07-01 01:59:21 -0400 |
commit | d31bdabbf5b6f5a667aefa2c381f7b534cad4f12 (patch) | |
tree | af182b1a1a6881d841093d90226f8d8c49a03dc7 /drivers/gpu/drm/amd/display/dc/bios | |
parent | 1ed0b2ddf42db301deaf981c1981da65b6a8f327 (diff) | |
download | linux-d31bdabbf5b6f5a667aefa2c381f7b534cad4f12.tar.bz2 |
drm/amd/display: Get num_chans from VBIOS table
Get the values from VBIOS table
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/bios')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c | 98 |
1 files changed, 98 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 9311fec1643c..b8684131151d 100644 --- a/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c +++ b/drivers/gpu/drm/amd/display/dc/bios/bios_parser2.c @@ -1378,6 +1378,63 @@ static struct atom_encoder_caps_record *get_encoder_cap_record( return NULL; } +static enum bp_result get_vram_info_v23( + struct bios_parser *bp, + struct dc_vram_info *info) +{ + struct atom_vram_info_header_v2_3 *info_v23; + enum bp_result result = BP_RESULT_OK; + + info_v23 = GET_IMAGE(struct atom_vram_info_header_v2_3, + DATA_TABLES(vram_info)); + + if (info_v23 == NULL) + return BP_RESULT_BADBIOSTABLE; + + info->num_chans = info_v23->vram_module[0].channel_num; + info->dram_channel_width_bytes = (1 << info_v23->vram_module[0].channel_width) / 8; + + return result; +} + +static enum bp_result get_vram_info_v24( + struct bios_parser *bp, + struct dc_vram_info *info) +{ + struct atom_vram_info_header_v2_4 *info_v24; + enum bp_result result = BP_RESULT_OK; + + info_v24 = GET_IMAGE(struct atom_vram_info_header_v2_4, + DATA_TABLES(vram_info)); + + if (info_v24 == NULL) + return BP_RESULT_BADBIOSTABLE; + + info->num_chans = info_v24->vram_module[0].channel_num; + info->dram_channel_width_bytes = (1 << info_v24->vram_module[0].channel_width) / 8; + + return result; +} + +static enum bp_result get_vram_info_v25( + struct bios_parser *bp, + struct dc_vram_info *info) +{ + struct atom_vram_info_header_v2_5 *info_v25; + enum bp_result result = BP_RESULT_OK; + + info_v25 = GET_IMAGE(struct atom_vram_info_header_v2_5, + DATA_TABLES(vram_info)); + + if (info_v25 == NULL) + return BP_RESULT_BADBIOSTABLE; + + info->num_chans = info_v25->vram_module[0].channel_num; + info->dram_channel_width_bytes = (1 << info_v25->vram_module[0].channel_width) / 8; + + return result; +} + /* * get_integrated_info_v11 * @@ -1669,6 +1726,46 @@ static enum bp_result construct_integrated_info( return result; } +static enum bp_result bios_parser_get_vram_info( + struct dc_bios *dcb, + struct dc_vram_info *info) +{ + struct bios_parser *bp = BP_FROM_DCB(dcb); + enum bp_result result = BP_RESULT_BADBIOSTABLE; + struct atom_common_table_header *header; + struct atom_data_revision revision; + + if (info && DATA_TABLES(vram_info)) { + header = GET_IMAGE(struct atom_common_table_header, + DATA_TABLES(vram_info)); + + get_atom_data_table_revision(header, &revision); + + switch (revision.major) { + case 2: + switch (revision.minor) { + case 3: + result = get_vram_info_v23(bp, info); + break; + case 4: + result = get_vram_info_v24(bp, info); + break; + case 5: + result = get_vram_info_v25(bp, info); + break; + default: + break; + } + break; + + default: + return result; + } + + } + return result; +} + static struct integrated_info *bios_parser_create_integrated_info( struct dc_bios *dcb) { @@ -2112,6 +2209,7 @@ static bool bios_parser2_construct( bp->base.integrated_info = bios_parser_create_integrated_info(&bp->base); bp->base.fw_info_valid = bios_parser_get_firmware_info(&bp->base, &bp->base.fw_info) == BP_RESULT_OK; + bios_parser_get_vram_info(&bp->base, &bp->base.vram_info); return true; } |