STRUCT AMD_SDW_MANAGER(9)

💖 struct amd_sdw_manager(9) 💖

okay bestie, gather round, because we're about to get into the amd manager driver context — this is the struct that holds the whole vibe of the AMD SoundWire manager, from the Kernel API Manual, section 9. no cap, it's a big one. let's go 🎀

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✨ NAME ✨

struct amd_sdw_manager — amd manager driver context. that's it, that's the whole name, she's literally the context struct for the AMD manager driver 🦋

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🌸 SYNOPSIS 🌸

here's the whole shape of her, exactly as she is, don't touch a single character:

struct amd_sdw_manager {
    struct sdw_bus bus;
    struct device *dev;
    void __iomem *mmio;
    void __iomem *acp_mmio;
    struct work_struct amd_sdw_irq_thread;
    struct work_struct amd_sdw_work;
    struct mutex *acp_sdw_lock;
    enum sdw_slave_status status[SDW_MAX_DEVICES + 1];
    int num_din_ports;
    int num_dout_ports;
    int max_ports;
    int cols_index;
    int rows_index;
    int *port_offset_map;
    u32 instance;
    u32 quirks;
    u32 wake_en_mask;
    u32 power_mode_mask;
    u32 acp_rev;
    bool clk_stopped;
    struct sdw_amd_dai_runtime **dai_runtime_array;
 };

like, look at her. she's organized. main character energy fr 💅

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🎀 Members 🎀

okay so every single field, one by one, no skipping, we are NOT leaving anyone out (the way that I respect every member of this struct...):

• bus — bus handle. the actual SoundWire bus she's running, right there 🚌
• dev — linux device. the linux device this whole thing hangs off of 🐧
• mmio — SoundWire registers mmio base. the memory-mapped I/O base for the SoundWire registers ✨
• acp_mmio — acp registers mmio base. same deal but for the ACP registers 🧚
• amd_sdw_irq_thread — SoundWire manager irq workqueue. the workqueue that handles the manager's IRQ stuff 🔥
• amd_sdw_work — peripheral status work queue. this is the workqueue for peripheral status, lowkey important 👀
• acp_sdw_lock — mutex to protect acp share register access. the lock you grab before touching the ACP share registers, do not skip her 🔒
• status — peripheral devices status array. array of statuses for all the peripheral devices, indexed by device 🫶
• num_din_ports — number of input ports. literally how many input ports there are 📥
• num_dout_ports — number of output ports. same but output 📤
• max_ports — total number of input ports and output ports. both together, the whole port situation 💯
• cols_index — Column index in frame shape. her column index in the frame shape (capital C, she's fancy) 🎀
• rows_index — Rows index in frame shape. and the row index to match 🌈
• port_offset_map — dynamic array to map port block offset. dynamic array doing the port-block-offset mapping ✨
• instance — SoundWire manager instance. which SoundWire manager instance this is 🦋
• quirks — SoundWire manager quirks. the quirks. every driver's got 'em 💀
• wake_en_mask — wake enable mask per SoundWire manager. wake enable mask, one per manager 😴
• power_mode_mask — flag interprets amd SoundWire manager power mode. this flag is the one interpreting the AMD SoundWire manager's power mode ⚡
• acp_rev — acp pci device revision id. the ACP PCI device's revision id 🧾
• clk_stopped — flag set to true when clock is stopped. true means clock's stopped, periodt ⏰
• dai_runtime_array — dai runtime array. the DAI runtime array, and yes she's a ** because she's extra 👑

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💜 SEE ALSO 💜

go look at the kernel file ./include/linux/soundwire/sdw_amd.h — that's where the struct lives, fr fr. and then go meet her friends:

• struct sdw_amd_dai_runtime(9)
• struct sdw_amd_acpi_info(9)
• struct sdw_amd_ctx(9)
• struct sdw_amd_res(9)

iykyk, the whole SoundWire AMD crew 🫶

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okay that's the page!! and just so we're on the same page — this beauty lives in ./include/linux/soundwire, it's the October 2026 edition, and yes, the title really is struct amd_sdw_manager(9). take care of her, she's iconic 🌟💖