drm_dp_lttpr_max_lane_count(9)
πΈ drm_dp_lttpr_max_lane_count(9) β Kernel API Manual, section 9 πΈ
okay so bestie, we're in the Kernel API Manual (section 9, the fun one π
) and today's main character is drm_dp_lttpr_max_lane_count. She's a tiny function with one job and she does it flawlessly. Let's get into it π«Ά
β¨ NAME β¨
drm_dp_lttpr_max_lane_count β literally just get the maximum lane count supported by all LTTPRs π
π¦ SYNOPSIS π¦
int drm_dp_lttpr_max_lane_count (const u8 caps[DP_LTTPR_COMMON_CAP_SIZE]
);
that's it. that's the whole signature. she's compact. she's iconic. no cap β
π ARGUMENTS π
capsβ the LTTPR common capabilities. like, the little blob of capability data she's gonna read from. hand it over and she'll do her thing π
π DESCRIPTION π
Returns the maximum lane count supported by all detected LTTPRs. that's the whole vibe β she looks at everything that got detected and tells you the max lane count they can all agree on. queen of consensus π
lowkey the most straightforward function in the whole file and honestly? we stan a low-drama icon πβ¨
π SEE ALSO π
okay this list is long bestie, grab a snack π β but every single one of these is part of the ./drivers/gpu/drm/display/drm_dp_helper.c dp helpers(9) family and they all deserve their moment:
Kernel file ./drivers/gpu/drm/display/drm_dp_helper.cdp helpers(9)drm_dp_phy_name(9)drm_dp_lttpr_wake_timeout_setup(9)- dp helpers(9)
drm_dp_dpcd_probe(9)drm_dp_dpcd_set_powered(9)drm_dp_dpcd_set_probe(9)drm_dp_dpcd_read(9)drm_dp_dpcd_write(9)drm_dp_dpcd_read_link_status(9)drm_dp_dpcd_read_phy_link_status(9)drm_dp_link_power_up(9)drm_dp_link_power_down(9)drm_dp_dpcd_write_payload(9)drm_dp_dpcd_clear_payload(9)drm_dp_dpcd_poll_act_handled(9)drm_dp_downstream_is_type(9)drm_dp_downstream_is_tmds(9)drm_dp_send_real_edid_checksum(9)drm_dp_read_dpcd_caps(9)drm_dp_read_downstream_info(9)drm_dp_downstream_max_dotclock(9)drm_dp_downstream_max_tmds_clock(9)drm_dp_downstream_min_tmds_clock(9)drm_dp_downstream_max_bpc(9)drm_dp_downstream_420_passthrough(9)drm_dp_downstream_444_to_420_conversion(9)drm_dp_downstream_rgb_to_ycbcr_conversion(9)drm_dp_downstream_mode(9)drm_dp_downstream_id(9)drm_dp_downstream_debug(9)drm_dp_subconnector_type(9)drm_dp_set_subconnector_property(9)drm_dp_read_sink_count_cap(9)drm_dp_read_sink_count(9)drm_dp_remote_aux_init(9)drm_dp_aux_init(9)drm_dp_aux_register(9)drm_dp_aux_unregister(9)drm_dp_psr_setup_time(9)drm_dp_start_crc(9)drm_dp_stop_crc(9)drm_dp_read_desc(9)drm_dp_dump_lttpr_desc(9)drm_dp_dsc_sink_bpp_incr(9)drm_dp_dsc_slice_count_to_mask(9)drm_dp_dsc_sink_slice_count_mask(9)drm_dp_dsc_sink_max_slice_count(9)drm_dp_dsc_sink_line_buf_depth(9)drm_dp_dsc_sink_supported_input_bpcs(9)drm_dp_dsc_sink_max_slice_throughput(9)drm_dp_dsc_branch_max_overall_throughput(9)drm_dp_dsc_branch_max_line_width(9)drm_dp_read_lttpr_common_caps(9)drm_dp_read_lttpr_phy_caps(9)drm_dp_lttpr_count(9)drm_dp_lttpr_max_link_rate(9)drm_dp_lttpr_set_transparent_mode(9)drm_dp_lttpr_init(9)drm_dp_lttpr_voltage_swing_level_3_supported(9)drm_dp_lttpr_pre_emphasis_level_3_supported(9)drm_dp_get_phy_test_pattern(9)drm_dp_set_phy_test_pattern(9)drm_dp_as_sdp_supported(9)drm_dp_vsc_sdp_supported(9)drm_dp_vsc_sdp_pack(9)drm_dp_get_pcon_max_frl_bw(9)drm_dp_pcon_frl_prepare(9)drm_dp_pcon_is_frl_ready(9)drm_dp_pcon_frl_configure_1(9)drm_dp_pcon_frl_configure_2(9)drm_dp_pcon_reset_frl_config(9)drm_dp_pcon_frl_enable(9)drm_dp_pcon_hdmi_link_active(9)drm_dp_pcon_hdmi_link_mode(9)drm_dp_pcon_hdmi_frl_link_error_count(9)drm_dp_pcon_pps_default(9)drm_dp_pcon_pps_override_buf(9)drm_edp_backlight_set_level(9)drm_edp_backlight_enable(9)drm_edp_backlight_disable(9)drm_edp_backlight_init(9)drm_panel_dp_aux_backlight(9)drm_dp_link_symbol_cycles(9)drm_dp_bw_overhead(9)drm_dp_bw_channel_coding_efficiency(9)drm_dp_max_dprx_data_rate(9)
like I said. a lot of friends. it's giving family reunion ππ
and that's the whole page bestie!! this one lives in ./drivers/gpu/drm/display, dated October 2026, and it's literally titled drm_dp_lttpr_max_lane_count(9) β go forth and count those lanes π
β¨π¦
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms