STRUCT DRM_EDP_BACKLIGHT_INFO(9)

💖 NAME 💖

okay bestie, this is the page for struct drm_edp_backlight_info(9) from the Kernel API Manual — and its NAME is literally struct drm_edp_backlight_info - Probed eDP backlight info struct. That's the whole vibe: a little struct holding probed backlight facts. 🎀

🌈 SYNOPSIS 🌈

Here's the exact struct, no cap:

       struct drm_edp_backlight_info {
           u8 pwmgen_bit_count;
           u8 pwm_freq_pre_divider;
           u32 max;
           bool lsb_reg_used : 1;
           bool aux_enable : 1;
           bool aux_set : 1;
           bool luminance_set : 1;
        };

👑 Members 👑

• pwmgen_bit_count — the pwmgen bit count. literally that. ✨
• pwm_freq_pre_divider — the PWM frequency pre-divider value being used for this backlight, if any. 🦋
• max — the maximum backlight level that may be set. 🔥
• lsb_reg_used — do we also write values to the DP_EDP_BACKLIGHT_BRIGHTNESS_LSB register? That's the question, bestie. 💅
• aux_enable — does the panel support the AUX enable cap? 👑
• aux_set — does the panel support setting the brightness through AUX? 🌸
• luminance_set — does the panel support setting the brightness through AUX using luminance values? 💜

🔥 Description 🔥

This structure contains various data about an eDP backlight, which can be populated by using drm_edp_backlight_init. That's it — it's the info struct, doing its main character thing. 💖

🦋 SEE ALSO 🦋

• Kernel file ./include/drm/display/drm_dp_helper.h
• struct drm_dp_vsc_sdp(9)
• struct drm_dp_as_sdp(9)
• drm_dp_dsc_sink_supports_format(9)
• drm_edp_backlight_supported(9)
• drm_dp_is_uhbr_rate(9)
• struct drm_dp_aux_msg(9)
• struct drm_dp_aux_cec(9)
• struct drm_dp_aux(9)
• drm_dp_dpcd_readb(9)
• drm_dp_dpcd_read_data(9)
• drm_dp_dpcd_write_data(9)
• drm_dp_dpcd_writeb(9)
• drm_dp_dpcd_read_byte(9)
• drm_dp_dpcd_write_byte(9)
• struct drm_dp_desc(9)
• enum drm_dp_quirk(9)
• drm_dp_has_quirk(9)
• struct drm_dp_phy_test_params(9)

xoxo, bestie 💅 this page's source/version vibe is ./include/drm/display, dated October 2026, and yes we're still talking about this struct drm_edp_backlight_info(9) page. Periodt. 🫶