STRUCT MHI_CHANNEL_CONFIG(9)

💖 NAME 💖

struct mhi_channel_config — the channel configuration structure for a controller, bestie 💅 (manual page struct mhi_channel_config(9), from the Kernel API Manual, no cap)

✨ SYNOPSIS ✨

struct mhi_channel_config {
    char *name;
    u32 num;
    u32 num_elements;
    u32 local_elements;
    u32 event_ring;
    enum dma_data_direction dir;
    enum mhi_ch_type type;
    u32 ee_mask;
    u32 pollcfg;
    enum mhi_db_brst_mode doorbell;
    bool lpm_notify;
    bool offload_channel;
    bool doorbell_mode_switch;
    bool wake_capable;
 };

okay so just look at that struct. it's giving "one channel's whole personality in a single C struct" 🔥 every field is a lil fact about one channel and her whole situation.

🎀 MEMBERS 🎀

• name — the name of this channel 🏷️ like her little nametag, iconic.
• num — the number assigned to this channel 🔢 the ID she got handed.
• num_elements — how many elements can be queued to this channel 📚 that's her queue capacity, periodt.
• local_elements — the local ring length of the channel 💫 how long the local ring is.
• event_ring — the event ring index that services this channel 🌀 which event ring has her back.
• dir — the direction that data may flow on this channel 🦋 which way the data's allowed to travel.
• type — the channel type 🌸 what kind of channel she is.
• ee_mask — the Execution Environment mask for this channel 🎭 the EE mask, yep.
• pollcfg — the polling configuration for burst mode 🔥 and listen: 0 is the default. For UL channels it's in milliseconds; for DL channels it's a multiple of 8 ring elements. two units, one field, iykyk.
• doorbell — the doorbell mode 🔔 which doorbell mode she's on.
• lpm_notify — the channel master requires low power mode notifications 😴 so if this is set, the master needs those LPM notifications.
• offload_channel — the client manages the channel completely 🫶 full offload, the client's got it, no hand-holding.
• doorbell_mode_switch — the channel switches to doorbell mode on M0 transition 🔄 M0 transition = doorbell mode now.
• wake_capable — the channel is capable of waking up the system ⏰ she can wake the whole system up, main character energy fr.

👑 SEE ALSO 👑

Kernel file ./include/linux/mhi.h, plus literally the entire extended universe 💜 — these are all (9) kernel API pages:

• enum mhi_callback(9)
• enum mhi_flags(9)
• enum mhi_device_type(9)
• enum mhi_ch_type(9)
• struct mhi_buf(9)
• struct image_info(9)
• struct mhi_link_info(9)
• enum mhi_ee_type(9)
• enum mhi_state(9)
• enum mhi_ch_ee_mask(9)
• enum mhi_er_data_type(9)
• enum mhi_db_brst_mode(9)
• struct mhi_event_config(9)
• struct mhi_controller_config(9)
• struct mhi_controller(9)
• struct mhi_device(9)
• struct mhi_result(9)
• struct mhi_driver(9)
• mhi_alloc_controller(9)
• mhi_free_controller(9)
• mhi_register_controller(9)
• mhi_unregister_controller(9)
• __mhi_driver_register(9)
• mhi_driver_unregister(9)
• mhi_set_mhi_state(9)
• mhi_notify(9)
• mhi_get_free_desc_count(9)
• mhi_prepare_for_power_up(9)
• mhi_async_power_up(9)
• mhi_sync_power_up(9)
• mhi_power_down(9)
• mhi_power_down_keep_dev(9)
• mhi_unprepare_after_power_down(9)
• mhi_pm_suspend(9)
• mhi_pm_resume(9)
• mhi_pm_resume_force(9)
• mhi_download_rddm_image(9)
• mhi_force_rddm_mode(9)
• mhi_get_exec_env(9)
• mhi_get_mhi_state(9)
• mhi_soc_reset(9)
• mhi_device_get_sync(9)
• mhi_device_put(9)
• mhi_prepare_for_transfer(9)
• mhi_unprepare_from_transfer(9)
• mhi_queue_buf(9)
• mhi_queue_skb(9)
• mhi_queue_is_full(9)
• mhi_get_channel_doorbell_offset(9)

ngl bestie, that's the whole page — you read all of it, I'm so proud 😭🫶 go forth and configure channels.

sign-off time ✨ this one lives at ./include/linux, dated October 2026, and it's the struct mhi_channel_config(9) page — mwah, bye 💋🎀