Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  *  BRIEF MODULE DESCRIPTION
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *     Serial port initialisation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *  Copyright 2004 IDT Inc. (rischelp@idt.com)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *  This program is free software; you can redistribute  it and/or modify it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *  under  the terms of  the GNU General  Public License as published by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  *  Free Software Foundation;  either version 2 of the  License, or (at your
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  *  option) any later version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)  *  You should have received a copy of the  GNU General Public License along
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)  *  with this program; if not, write  to the Free Software Foundation, Inc.,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)  *  675 Mass Ave, Cambridge, MA 02139, USA.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/tty.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <linux/serial_core.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/serial_8250.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #include <asm/serial.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include <asm/mach-rc32434/rb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) extern unsigned int idt_cpu_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static struct uart_port rb532_uart = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	.flags = UPF_BOOT_AUTOCONF,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	.line = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	.irq = UART0_IRQ,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	.iotype = UPIO_MEM,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	.membase = (char *)KSEG1ADDR(REGBASE + UART0BASE),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	.regshift = 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int __init setup_serial_port(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	rb532_uart.uartclk = idt_cpu_freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	return early_serial_setup(&rb532_uart);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) arch_initcall(setup_serial_port);