STRUCT RZ_MTU3_PWM_CHIP(9)

💅 struct rz_mtu3_pwm_chip(9) — bestie, meet your new fave struct ✨

okay so this is from the Kernel API Manual, and it is literally the main character of pwm-rz-mtu3.c. Say hi to struct rz_mtu3_pwm_chip 🎀 — it's the private data situation for the MTU3 pwm, and honestly? She's holding a lot together.

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🌸 NAME 🌸

struct rz_mtu3_pwm_chip — MTU3 pwm private data 💖

like yes, that's the whole name section, and yes, she ate.

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✨ SYNOPSIS ✨

here's the whole squad, laid out exactly:

struct rz_mtu3_pwm_chip {
    struct clk *clk;
    struct mutex lock;
    unsigned long rate;
    u32 user_count[RZ_MTU3_MAX_HW_CHANNELS];
    u32 enable_count[RZ_MTU3_MAX_HW_CHANNELS];
    u8 prescale[RZ_MTU3_MAX_HW_CHANNELS];
    struct rz_mtu3_pwm_channel channel_data[RZ_MTU3_MAX_HW_CHANNELS];
 };

note the lil' space before that final }; — we keep it exactly as the manpage gives it, no cap 🫶

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🦋 Members 🦋

so here's the member-by-member vibe check, and ngl every single one is doing her job:

• clk — MTU3 module clock ⏰ (the clock, the moment, the timing of it all)
• lock — the lock that prevents concurrent access for the usage count 🔒 — like a bouncer at the club, no two people touching that count at once
• rate — MTU3 clock rate 🌈
• user_count — MTU3 usage count 👑 — an array, RZ_MTU3_MAX_HW_CHANNELS of them, one per channel
• enable_count — MTU3 enable count 🔥 — same deal, array sized RZ_MTU3_MAX_HW_CHANNELS
• prescale — MTU3 prescale 🎚️ — array again, RZ_MTU3_MAX_HW_CHANNELS wide, of type u8
• channel_data — MTU3 pwm channel data 💜 — an array of struct rz_mtu3_pwm_channel, RZ_MTU3_MAX_HW_CHANNELS of them

the way that every count-y field is an array indexed by channel... that's the structure's whole personality iykyk

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💀 SEE ALSO 💀

go read these bestie, they're the rest of the lore:

• Kernel file ./drivers/pwm/pwm-rz-mtu3.c struct rz_mtu3_channel_io_map(9), struct rz_mtu3_pwm_channel(9)

like, the source file itself is right there at ./drivers/pwm/pwm-rz-mtu3.c — go touch the grass, it's literally in the tree 🌱

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fr fr: this page lives under ./drivers/pwm, and it's dated October 2026, in the Kernel API Manual, page struct rz_mtu3_pwm_chip(9). so when anyone asks, that's the citation, periodt 💅

okay bye bestie, go read rz_mtu3_pwm_channel(9) next — mwah 🫶🎀✨