cmdq_dev_get_client_reg(9)

💖 cmdq_dev_get_client_reg — the Kernel API Manual glow-up 💖

okay so bestie, this one is from the Kernel API Manual and it's called cmdq_dev_get_client_reg(9) and honestly? it's a little helper that does one thing and does it cute. let's get into it 🎀

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✨ NAME ✨

cmdq_dev_get_client_reg — literally parses the cmdq client reg from the device node of a CMDQ client. that's the whole vibe. 🦋

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🌸 SYNOPSIS 🌸

int cmdq_dev_get_client_reg (struct device *dev , struct cmdq_client_reg
*client_reg , int idx );

yes it's giving three-arguments-and-a-dream, and yes we're getting into each one 👑

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🫶 ARGUMENTS 🫶

• dev — the device of the CMDQ mailbox client. like, whose node are we even reading from, bestie? this one. 🌈
• client_reg — a CMDQ client reg pointer. the spot where the parsed reg gets dropped off. 💅
• idx — the index of the desired reg. not any reg, the one you want. main character reg energy. ⭐

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🔥 RETURN 🔥

0 for success; else the error code is returned. so bestie, check your return value, 0 is a slay and anything else is the kernel telling you "no 💀".

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👑 DESCRIPTION 👑

Help CMDQ client parse the cmdq client reg from the device node of the CMDQ client. that's it, that's the function 🧚 — it does the node-reading homework so your client doesn't have to. no cap.

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💜 SEE ALSO 💜

Kernel file ./include/linux/soc/mediatek/mtk-cmdq.h — and the whole friend group, fr fr:

• cmdq_mbox_create(9)
• cmdq_mbox_destroy(9)
• cmdq_pkt_create(9)
• cmdq_pkt_destroy(9)
• cmdq_pkt_write(9)
• cmdq_pkt_write_pa(9)
• cmdq_pkt_write_subsys(9)
• cmdq_pkt_write_mask(9)
• cmdq_pkt_write_mask_pa(9)
• cmdq_pkt_write_mask_subsys(9)
• cmdq_pkt_write_s(9)
• cmdq_pkt_write_s_mask(9)
• cmdq_pkt_write_s_value(9)
• cmdq_pkt_write_s_mask_value(9)
• cmdq_pkt_mem_move(9)
• cmdq_pkt_wfe(9)
• cmdq_pkt_acquire_event(9)
• cmdq_pkt_clear_event(9)
• cmdq_pkt_set_event(9)
• cmdq_pkt_poll(9)
• cmdq_pkt_poll_mask(9)
• cmdq_pkt_logic_command(9)
• cmdq_pkt_assign(9)
• cmdq_pkt_poll_addr(9)
• cmdq_pkt_jump_abs(9)
• cmdq_pkt_jump_rel(9)
• cmdq_pkt_jump_rel_temp(9)
• cmdq_pkt_eoc(9)

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and that's the page, bestie 🍓 — brought to you from ./include/linux/soc/mediatek, dated October 2026, filed under cmdq_dev_get_client_reg(9). iykyk 💅✨