diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2021-02-10 18:42:23 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2022-06-22 15:37:50 +0300 |
| commit | 96972440c4f8c67759675b9ccf24a5dc3fd5b15a (patch) | |
| tree | 3babc3018dc0738e5b53bacb9e3e6597f288b00b | |
| parent | be57da217deab276be5a716aa6c5cdc3695829be (diff) | |
tools/intel_vbt_decode: Decode DP max link rate
Decode the child device DP max link rate stuff.
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
| -rw-r--r-- | tools/intel_vbt_decode.c | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/tools/intel_vbt_decode.c b/tools/intel_vbt_decode.c index a91273d8..77de7506 100644 --- a/tools/intel_vbt_decode.c +++ b/tools/intel_vbt_decode.c @@ -441,6 +441,51 @@ static void dump_hmdi_max_data_rate(uint8_t hdmi_max_data_rate) hdmi_max_data_rate); } +static int parse_dp_max_link_rate_216(uint8_t dp_max_link_rate) +{ + static const uint16_t max_link_rate[] = { + [BDB_216_VBT_DP_MAX_LINK_RATE_HBR3] = 810, + [BDB_216_VBT_DP_MAX_LINK_RATE_HBR2] = 540, + [BDB_216_VBT_DP_MAX_LINK_RATE_HBR] = 270, + [BDB_216_VBT_DP_MAX_LINK_RATE_LBR] = 162, + }; + + return max_link_rate[dp_max_link_rate & 0x3]; +} + +static int parse_dp_max_link_rate_230(uint8_t dp_max_link_rate) +{ + static const uint16_t max_link_rate[] = { + [BDB_230_VBT_DP_MAX_LINK_RATE_DEF] = 0, + [BDB_230_VBT_DP_MAX_LINK_RATE_LBR] = 162, + [BDB_230_VBT_DP_MAX_LINK_RATE_HBR] = 270, + [BDB_230_VBT_DP_MAX_LINK_RATE_HBR2] = 540, + [BDB_230_VBT_DP_MAX_LINK_RATE_HBR3] = 810, + [BDB_230_VBT_DP_MAX_LINK_RATE_UHBR10] = 1000, + [BDB_230_VBT_DP_MAX_LINK_RATE_UHBR13P5] = 1350, + [BDB_230_VBT_DP_MAX_LINK_RATE_UHBR20] = 2000, + }; + + return max_link_rate[dp_max_link_rate]; +} + +static void dump_dp_max_link_rate(uint16_t version, uint8_t dp_max_link_rate) +{ + int link_rate; + + if (version >= 230) + link_rate = parse_dp_max_link_rate_230(dp_max_link_rate); + else + link_rate = parse_dp_max_link_rate_216(dp_max_link_rate); + + if (link_rate == 0) + printf("\t\tDP max link rate: <platform max> (0x%02x)\n", + dp_max_link_rate); + else + printf("\t\tDP max link rate: %g Gbps (0x%02x)\n", + link_rate / 100.0f, dp_max_link_rate); +} + static void dump_child_device(struct context *context, const struct child_device_config *child) { @@ -524,8 +569,11 @@ static void dump_child_device(struct context *context, printf("\t\tIBoost level for HDMI: 0x%02x\n", child->hdmi_iboost_level); printf("\t\tIBoost level for DP/eDP: 0x%02x\n", child->dp_iboost_level); } -} + if (context->bdb->version >= 216) + dump_dp_max_link_rate(context->bdb->version, + child->dp_max_link_rate); +} static void dump_child_devices(struct context *context, const uint8_t *devices, uint8_t child_dev_num, uint8_t child_dev_size) |