STRUCT EMC2305_DATA(9)

💖 NAME 💖

ok so struct emc2305_data — bestie, it's literally just device-specific data 🎀 like all the per-device bookkeeping for this hwmon driver lives in here, no cap ✨

this is a page from the Kernel API Manual, section 9 — yes we're in the big-kid kernel docs section, iykyk 💅

🌸 SYNOPSIS 🌸

struct emc2305_data {
    struct i2c_client *client;
    struct device *hwmon_dev;
    u8 max_state;
    u8 pwm_num;
    u8 pwm_output_mask;
    u8 pwm_polarity_mask;
    bool pwm_separate;
    s16 pwm_shutdown[EMC2305_PWM_MAX];
    u8 pwm_min[EMC2305_PWM_MAX];
    u16 pwm_freq[EMC2305_PWM_MAX];
    struct emc2305_cdev_data cdev_data[EMC2305_PWM_MAX];
};

like, that's the whole struct, laid out exactly, don't @ me 🫶

🦋 MEMBERS 🦋

okay let's go member by member, main character energy only 👑

• client — the i2c client 💖 that's your ride-or-die i2c connection, fr.
• hwmon_dev — the hwmon device ✨ the actual hardware-monitoring device this all hangs off of.
• max_state — maximum cooling state of the cooling device 🥶 like how hard this thing can possibly go.
• pwm_num — number of PWM channels 🌈 count 'em.
• pwm_output_mask — PWM output mask 🎀 a cute lil mask for the outputs.
• pwm_polarity_mask — PWM polarity mask 🌀 same vibe, but for polarity.
• pwm_separate — separate PWM settings for every channel 💅 because sometimes each channel wants to do its own thing, and honestly? valid.
• pwm_shutdown — Set shutdown PWM. 🛑 the s16 array ([EMC2305_PWM_MAX]) holding the shutdown PWM values. (yes the original sentence has a period at the end, keeping it, periodt.)
• pwm_min — array of minimum PWM per channel 🍓 u8 array sized [EMC2305_PWM_MAX], the floor value for each channel.
• pwm_freq — array of PWM frequency per channel 🔥 u16 array sized [EMC2305_PWM_MAX], how fast each channel vibes.
• cdev_data — array of cooling devices data 👑 struct emc2305_cdev_data array sized [EMC2305_PWM_MAX], all the cooling-device deets.

⭐ SEE ALSO ⭐

• Kernel file ./drivers/hwmon/emc2305.c 📁 — the source, go read it bestie, it's giving lore
• struct emc2305_cdev_data(9) 🧚 — the companion struct, the duo we didn't know we needed

lowkey reminder: EMC2305_PWM_MAX is the array size used for pwm_shutdown, pwm_min, pwm_freq, and cdev_data — keep it exact, no guessing 🫶

aaaand that's the page!! 💜 brought to you by ./drivers/hwmon, dated October 2026, from the Kernel API Manual — struct emc2305_data(9), slay, bye bestie 😭🎀