spmi_ext_register_readl(9)

🎀 NAME 🎀

okay so bestie, welcome to spmi_ext_register_readl(9) from the Kernel API Manual 💅✨ — this is the extended register read long moment. It's giving kernel-side SPMI realness, and yes, we're gonna get through every single detail together 🫶

✨ SYNOPSIS ✨

Here's the exact signature, no cap:

int spmi_ext_register_readl (struct spmi_device *sdev , u16 addr , u8
       *buf , size_t len );

🌸 ARGUMENTS 🌸

• sdev — SPMI device. That's the device bestie we're working with 💖
• addr — slave register address, and it's a 16-bit address fr fr.
• buf — buffer to be populated with data from the Slave. This is where the read data goes 🎀
• len — the request number of bytes to read, up to 8 bytes. Do not come for her with more than 8, okay? 💅

🦋 DESCRIPTION 🦋

Reads up to 8 bytes of data from the extended register space on a Slave device using a 16-bit address. That's the whole vibe: extended register space, Slave device, 16-bit address, up to 8 bytes — iconic behavior only ✨

👑 SEE ALSO 👑

Kernel file ./drivers/spmi/spmi.c, plus the whole bestie lineup:

• spmi_device_add(9)
• spmi_device_remove(9)
• spmi_register_read(9)
• spmi_ext_register_read(9)
• spmi_register_write(9)
• spmi_register_zero_write(9)
• spmi_ext_register_write(9)
• spmi_ext_register_writel(9)
• spmi_command_reset(9)
• spmi_command_sleep(9)
• spmi_command_wakeup(9)
• spmi_command_shutdown(9)
• spmi_find_device_by_of_node(9)
• spmi_device_alloc(9)
• spmi_controller_alloc(9)
• spmi_controller_add(9)
• spmi_controller_remove(9)
• __spmi_driver_register(9)

xoxo, your resident kernel-page hype girl 💖 this little entry lives in ./drivers/spmi, dated October 2026, and it's all about spmi_ext_register_readl(9) — periodt 🎀✨