STRUCT RPMSG_INFO(9)

💖 struct rpmsg_info(9) — the rpmsg audio info struct, bestie 💖

okay so this page is from the Kernel API Manual (section 9, the kernel-api girlies 🎀), and it's literally all about struct rpmsg_info — the rpmsg audio information struct. no cap, that's the whole name. let's get into it ✨

🌸 SYNOPSIS 🌸

like, here's the whole struct, character for character, i would never do you dirty:

struct rpmsg_info {
    struct rpmsg_device      *rpdev;
    struct device            *dev;
    struct completion        cmd_complete;
    struct pm_qos_request    pm_qos_req;
    struct rpmsg_r_msg       r_msg;
    struct rpmsg_msg         msg[MSG_MAX_NUM];
    struct rpmsg_msg         notify[2];
    bool notify_updated[2];
    struct workqueue_struct  *rpmsg_wq;
    struct work_of_rpmsg     work_list[WORK_MAX_NUM];
    int work_write_index;
    int work_read_index;
    int msg_drop_count[2];
    int num_period[2];
    void *callback_param[2];
    dma_callback callback[2];
    int (*send_message)(struct rpmsg_msg *msg, struct rpmsg_info *info);
    spinlock_t lock[2];
    spinlock_t wq_lock;
    struct mutex             msg_lock;
    struct stream_timer      stream_timer[2];
 };

like yes, the indentation on that last brace is exactly what the source says, i'm not touching it 💅

👑 Members 👑

okay bestie, field-by-field breakdown, let's go 🫶

• rpdev — pointer of rpmsg_device. iconic pointer energy.
• dev — pointer for the imx_pcm_rpmsg device.
• cmd_complete — command is finished. that's the completion, she's done ✅
• pm_qos_req — request of pm qos.
• r_msg — received rpmsg.
• msg — array of rpmsg.
• notify — notification msg (type C) for TX & RX. yes, type C, keep that.
• notify_updated — notification flag for TX & RX.
• rpmsg_wq — rpmsg workqueue.
• work_list — array of work list for workqueue.
• work_write_index — write index of work list.
• work_read_index — read index of work list.
• msg_drop_count — counter of dropped msg for TX & RX.
• num_period — period number for TX & RX.
• callback_param — parameter for period elapse callback for TX & RX.
• callback — period elapse callback for TX & RX.
• send_message — function pointer for send message.
• lock — spin lock for TX & RX.
• wq_lock — lock for work queue.
• msg_lock — lock for send message.
• stream_timer — timer for tigger workqueue. (yes, "tigger" — that's the original's spelling, not me being silly, i promise 😭💀)

also notice basically everything is [2] — TX & RX, two of everything, twins energy fr fr 🌈

🦋 SEE ALSO 🦋

• Kernel file ./sound/soc/fsl/imx-pcm-rpmsg.h
• struct rpmsg_head(9)
• struct param_s(9)

okay that's the whole vibe check ✅ this one lives under ./sound/soc/fsl, dated October 2026, and it's the struct rpmsg_info(9) page from the Kernel API Manual — go read the header file bestie, it ate 💅✨💖