From: Ville Syrjälä <[email protected]> Decode the HDMI max data rate from the VBT.
Cc: Jani Nikula <[email protected]> Signed-off-by: Ville Syrjälä <[email protected]> --- tools/intel_vbt_decode.c | 22 +++++++++++++++++++++- tools/intel_vbt_defs.h | 4 ++++ 2 files changed, 25 insertions(+), 1 deletion(-) diff --git a/tools/intel_vbt_decode.c b/tools/intel_vbt_decode.c index 9d90c69dbc9c..93a090f73d54 100644 --- a/tools/intel_vbt_decode.c +++ b/tools/intel_vbt_decode.c @@ -398,6 +398,26 @@ static const char *mipi_bridge_type(uint8_t type) } } +static void dump_hmdi_max_data_rate(uint8_t hdmi_max_data_rate) +{ + static const uint16_t max_data_rate[] = { + [HDMI_MAX_DATA_RATE_PLATFORM] = 0, + [HDMI_MAX_DATA_RATE_297] = 297, + [HDMI_MAX_DATA_RATE_165] = 165, + }; + + if (hdmi_max_data_rate >= ARRAY_SIZE(max_data_rate)) + printf("\t\tHDMI max data rate: <unknown> (0x%02x)\n", + hdmi_max_data_rate); + else if (hdmi_max_data_rate == HDMI_MAX_DATA_RATE_PLATFORM) + printf("\t\tHDMI max data rate: <platform max> (0x%02x)\n", + hdmi_max_data_rate); + else + printf("\t\tHDMI max data rate: %d MHz (0x%02x)\n", + max_data_rate[hdmi_max_data_rate], + hdmi_max_data_rate); +} + static void dump_child_device(struct context *context, const struct child_device_config *child) { @@ -418,7 +438,7 @@ static void dump_child_device(struct context *context, printf("\t\tDP onboard redriver: 0x%02x\n", child->dp_onboard_redriver); printf("\t\tDP ondock redriver: 0x%02x\n", child->dp_ondock_redriver); printf("\t\tHDMI level shifter value: 0x%02x\n", child->hdmi_level_shifter_value); - printf("\t\tHDMI max data rate: 0x%02x\n", child->hdmi_max_data_rate); + dump_hmdi_max_data_rate(child->hdmi_max_data_rate); printf("\t\tOffset to DTD buffer for edidless CHILD: 0x%02x\n", child->dtd_buf_ptr); printf("\t\tEdidless EFP: %s\n", YESNO(child->edidless_efp)); printf("\t\tCompression enable: %s\n", YESNO(child->compression_enable)); diff --git a/tools/intel_vbt_defs.h b/tools/intel_vbt_defs.h index 3c3c421e2e43..e3d7745a9151 100644 --- a/tools/intel_vbt_defs.h +++ b/tools/intel_vbt_defs.h @@ -304,6 +304,10 @@ struct bdb_general_features { #define DVO_PORT_MIPIC 23 /* 171 */ #define DVO_PORT_MIPID 24 /* 171 */ +#define HDMI_MAX_DATA_RATE_PLATFORM 0 /* 204 */ +#define HDMI_MAX_DATA_RATE_297 1 /* 204 */ +#define HDMI_MAX_DATA_RATE_165 2 /* 204 */ + #define LEGACY_CHILD_DEVICE_CONFIG_SIZE 33 /* DDC Bus DDI Type 155+ */ -- 2.13.6 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
