The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/mips/broadcom/uart_bus_chipc.c

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    1 /*-
    2  * Copyright (c) 2016 Michael Zhilin <mizhka@gmail.com>
    3  *
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD: stable/12/sys/mips/broadcom/uart_bus_chipc.c 338074 2018-08-19 21:10:21Z mmacy $");
   30 
   31 #include "opt_uart.h"
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/bus.h>
   36 #include <sys/conf.h>
   37 #include <sys/kernel.h>
   38 #include <sys/module.h>
   39 #include <sys/rman.h>
   40 
   41 #include <machine/bus.h>
   42 #include <machine/resource.h>
   43 
   44 #include <dev/uart/uart.h>
   45 #include <dev/uart/uart_bus.h>
   46 #include <dev/uart/uart_cpu.h>
   47 
   48 #include "uart_if.h"
   49 #include "bhnd_chipc_if.h"
   50 
   51 #include "bcm_machdep.h"
   52 
   53 
   54 static int
   55 uart_chipc_probe(device_t dev)
   56 {
   57         struct uart_softc       *sc;
   58         u_int                    rclk;
   59 
   60         sc = device_get_softc(dev);
   61         sc->sc_class = &uart_ns8250_class;
   62 
   63         rclk = bcm_get_uart_rclk(bcm_get_platform());
   64         return (uart_bus_probe(dev, 0, 0, rclk, 0, 0, 0));
   65 }
   66 
   67 static device_method_t uart_chipc_methods[] = {
   68         /* Device interface */
   69         DEVMETHOD(device_probe,         uart_chipc_probe),
   70         DEVMETHOD(device_attach,        uart_bus_attach),
   71         DEVMETHOD(device_detach,        uart_bus_detach),
   72         { 0, 0 }
   73 };
   74 
   75 static driver_t uart_chipc_driver = {
   76         uart_driver_name,
   77         uart_chipc_methods,
   78         sizeof(struct uart_softc),
   79 };
   80 
   81 DRIVER_MODULE(uart, bhnd_chipc, uart_chipc_driver, uart_devclass, 0, 0);

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