Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * altera-lpt.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * altera FPGA driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Copyright (C) Altera Corporation 1998-2001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * Copyright (C) 2010 NetUP Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * Copyright (C) 2010 Abylay Ospan <aospan@netup.ru>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "altera-exprt.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) static int lpt_hardware_initialized;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static void byteblaster_write(int port, int data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	outb((u8)data, (u16)(port + 0x378));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) static int byteblaster_read(int port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	int data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	data = inb((u16)(port + 0x378));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	return data & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int netup_jtag_io_lpt(void *device, int tms, int tdi, int read_tdo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	int data = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	int tdo = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	int initial_lpt_ctrl = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	if (!lpt_hardware_initialized) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		initial_lpt_ctrl = byteblaster_read(2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		byteblaster_write(2, (initial_lpt_ctrl | 0x02) & 0xdf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		lpt_hardware_initialized = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	data = ((tdi ? 0x40 : 0) | (tms ? 0x02 : 0));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	byteblaster_write(0, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	if (read_tdo) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		tdo = byteblaster_read(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		tdo = ((tdo & 0x80) ? 0 : 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	byteblaster_write(0, data | 0x01);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	byteblaster_write(0, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	return tdo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) }