thc_tic_pio_write_and_read(9)

💅 thc_tic_pio_write_and_read (9) — Kernel API Manual ✨

okay so bestie, welcome to the glow-up of the THC kernel API manual 💖 this one's a little function with main character energy: thc_tic_pio_write_and_read — it writes some data, and then it reads some data, both through PIO. iconic behavior, honestly.

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🌸 NAME 🌸

thc_tic_pio_write_and_read — literally what it says on the tin: write data followed by read data, by PIO. no cap. 🦋

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✨ SYNOPSIS ✨

int thc_tic_pio_write_and_read (struct thc_device *dev , const u32
address , const u32 write_size , const u32 *write_buffer , const u32
read_size , u32 *actual_size , u32 *read_buffer );

she takes seven arguments and returns an int. high maintenance? maybe. worth it? absolutely 🎀

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🫶 ARGUMENTS 🫶

• dev — the pointer of the THC private device context. your little home base, your main character's apartment 🏠
• address — slave address for the PIO operation. gotta know where you're going 💅
• write_size — PIO write data size. how much you're serving, bestie 🍓
• write_buffer — the pointer of the write data buffer. this is where the served data lives ✨
• read_size — expected PIO read data size. keyword: expected — see actual_size below if you're nosy 👀
• actual_size — the pointer of the actual read data size. reality check, lowkey 💀
• read_buffer — the pointer of PIO read data buffer. where the incoming data lands 🌈

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🔥 RETURN 🔥

0 on success, other error codes on failed. so like — zero means slay, anything else means something went sideways. not me checking the return value every single time 🙈

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👑 SEE ALSO 👑

the kernel file this lives in:

./drivers/hid/intel-thc-hid/intel-thc/intel-thc-dev.c

and now the whole friend group 🫶 — every single one of them, in order, no skipping:

• thc_clear_state(9)
• thc_dev_init(9)
• thc_tic_pio_read(9)
• thc_tic_pio_write(9)
• thc_interrupt_config(9)
• thc_int_trigger_type_select(9)
• thc_interrupt_enable(9)
• thc_interrupt_quiesce(9)
• thc_set_pio_interrupt_support(9)
• thc_ltr_config(9)
• thc_change_ltr_mode(9)
• thc_ltr_unconfig(9)
• thc_int_cause_read(9)
• thc_interrupt_handler(9)
• thc_port_select(9)
• thc_spi_read_config(9)
• thc_spi_write_config(9)
• thc_spi_input_output_address_config(9)
• thc_i2c_subip_init(9)
• thc_i2c_subip_regs_save(9)
• thc_i2c_subip_regs_restore(9)
• thc_i2c_set_rx_max_size(9)
• thc_i2c_rx_max_size_enable(9)
• thc_i2c_set_rx_int_delay(9)
• thc_i2c_rx_int_delay_enable(9)

periodt. read them all or don't come back to the group chat 💅

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okay that's the whole page!! this came out of the source file ./drivers/hid/intel-thc-hid/in... and the date on it is October 2026 🌸 so go forth, pass those pointers correctly, and remember: 0 on success, bestie. mwah 💖🎀🦋