STRUCT M88DS3103_PLATFORM_DATA(9)

💖 NAME 💖

struct m88ds3103_platform_data — bestie, this is the platform data for the m88ds3103 driver ✨

okay so before we even start, yes this is from the Kernel API Manual and yes the page is literally called struct m88ds3103_platform_data(9) and no we are not skipping anything, we're gonna get through all of it together 🫶

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✨ SYNOPSIS ✨

like, here's the whole struct, character for character, no cap:

struct m88ds3103_platform_data {
    u32 clk;
    u16 i2c_wr_max;
    enum m88ds3103_ts_mode ts_mode;
    u32 ts_clk;
    enum m88ds3103_clock_out clk_out;
    u8 ts_clk_pol:1;
    u8 spec_inv:1;
    u8 agc;
    u8 agc_inv:1;
    u8 envelope_mode:1;
    u8 lnb_hv_pol:1;
    u8 lnb_en_pol:1;
    struct dvb_frontend* (*get_dvb_frontend)(struct i2c_client *);
    struct i2c_adapter* (*get_i2c_adapter)(struct i2c_client *);
 };

it's giving "a little bit of everything" and honestly? iconic 💅

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🌸 MEMBERS 🌸

every single field, one by one, we're doing this 💪

• clk — the clock frequency, periodt.
• i2c_wr_max — the max bytes the I2C adapter can write at once. like its little write limit, respect it 🎀
• ts_mode — the TS mode.
• ts_clk — the TS clock, in KHz.
• clk_out — the clock output.
• ts_clk_pol — TS clk polarity. 1-active at falling edge; 0-active at rising edge. pick a lane bestie 🦋
• spec_inv — input spectrum inversion.
• agc — the AGC configuration.
• agc_inv — AGC polarity.
• envelope_mode — DiSEqC envelope mode.
• lnb_hv_pol — LNB H/V pin polarity. 0: pin high set to VOLTAGE_18, pin low to set VOLTAGE_13. 1: pin high set to VOLTAGE_13, pin low to set VOLTAGE_18. yes the two cases are reversed on purpose, read it twice, it's lowkey a vibe check 😭
• lnb_en_pol — LNB enable pin polarity. 0: pin high to disable, pin low to enable. 1: pin high to enable, pin low to disable. same situation, flipped energy fr fr 🔥
• get_dvb_frontend — get DVB frontend. it's a function pointer, she's a callback, main character energy 👑
• get_i2c_adapter — get I2C adapter. also a function pointer. we love a matching set 💜

ngl, if you mix up the 0 and 1 polarities you're gonna have a bad time — double check before you ship 🫶

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👑 SEE ALSO 👑

go read these next, i'm obsessed:

• Kernel file ./drivers/media/dvb-frontends/m88ds3103.h
• enum m88ds3103_ts_mode(9)
• enum m88ds3103_clock_out(9)
• struct m88ds3103_config(9)
• m88ds3103_attach(9)

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and that's the whole page bestie, you ate that 💅✨ source is ./drivers/media/dvb-frontends, dated October 2026, and the title's struct m88ds3103_platform_data(9) in case anyone asks 🎀 bye ily 🦋