freebsd-dev/sys/arm/at91/uart_cpu_at91usart.c
Warner Losh 8046b4f5b5 We don't need at91_bs_tag. arm_base_bs_tag works now that we have
better dynamic device mapping that didn't exit when we started this
port. Remove it, since everything works w/o it.
2016-01-16 05:47:34 +00:00

91 lines
2.8 KiB
C

/*-
* Copyright (c) 2003 Marcel Moolenaar
* Copyright (c) 2006 M. Warner Losh
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "opt_platform.h"
#include "opt_uart.h"
#ifndef FDT
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/cons.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <machine/bus.h>
#include <dev/uart/uart.h>
#include <dev/uart/uart_bus.h>
#include <dev/uart/uart_cpu.h>
#include <arm/at91/at91var.h>
bus_space_tag_t uart_bus_space_io;
bus_space_tag_t uart_bus_space_mem;
extern struct uart_class at91_usart_class;
int
uart_cpu_eqres(struct uart_bas *b1, struct uart_bas *b2)
{
return ((b1->bsh == b2->bsh && b1->bst == b2->bst) ? 1 : 0);
}
int
uart_cpu_getdev(int devtype, struct uart_devinfo *di)
{
struct uart_class *class;
class = &at91_usart_class;
if (class->uc_rclk == 0 && at91_master_clock != 0)
class->uc_rclk = at91_master_clock;
di->ops = uart_getops(class);
di->bas.chan = 0;
di->bas.bst = arm_base_bs_tag;
/*
* XXX: Not pretty, but will work because we map the needed addresses
* early. At least we probed this so that the console will work on
* all flavors of Atmel we can detect.
*/
di->bas.bsh = soc_info.dbgu_base;
di->baudrate = 115200;
di->bas.regshft = 0;
di->bas.rclk = 0;
di->databits = 8;
di->stopbits = 1;
di->parity = UART_PARITY_NONE;
uart_bus_space_io = arm_base_bs_tag;
uart_bus_space_mem = NULL;
/* Check the environment for overrides */
uart_getenv(devtype, di, class);
return (0);
}
#endif