uart_bus_at91usart.c revision 279724
1192886Sedwin/*- 2192886Sedwin * Copyright (c) 2005 Olivier Houchard. All rights reserved. 364499Swollman * 4273719Sedwin * Redistribution and use in source and binary forms, with or without 52742Swollman * modification, are permitted provided that the following conditions 6273719Sedwin * are met: 7273719Sedwin * 1. Redistributions of source code must retain the above copyright 82742Swollman * notice, this list of conditions and the following disclaimer. 9158421Swollman * 2. Redistributions in binary form must reproduce the above copyright 102742Swollman * notice, this list of conditions and the following disclaimer in the 11158421Swollman * documentation and/or other materials provided with the distribution. 12158421Swollman * 132742Swollman * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14248307Sedwin * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15273719Sedwin * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16273719Sedwin * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 17248307Sedwin * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1886222Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 1920094Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2020094Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2120094Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2220094Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2320094Swollman * SUCH DAMAGE. 24158421Swollman */ 25158421Swollman 2620094Swollman#include "opt_uart.h" 2719878Swollman 2819878Swollman#include <sys/cdefs.h> 2919878Swollman__FBSDID("$FreeBSD: head/sys/arm/at91/uart_bus_at91usart.c 279724 2015-03-07 15:24:15Z ian $"); 3019878Swollman 3119878Swollman#include <sys/param.h> 3219878Swollman#include <sys/systm.h> 33270817Spluknet#include <sys/bus.h> 3419878Swollman#include <sys/conf.h> 3558787Sru#include <sys/kernel.h> 3658787Sru#include <sys/module.h> 3758787Sru#include <machine/bus.h> 38270817Spluknet#include <sys/rman.h> 3958787Sru#include <machine/resource.h> 4058787Sru 41270817Spluknet#include <dev/uart/uart.h> 42270817Spluknet#include <dev/uart/uart_bus.h> 43270817Spluknet#include <dev/uart/uart_cpu.h> 4458787Sru 4558787Sru#include <arm/at91/at91var.h> 4658787Sru 4758787Sru#include "uart_if.h" 4858787Sru 4958787Sruextern struct uart_class at91_usart_class; 50270817Spluknetstatic int usart_at91_probe(device_t dev); 5158787Sru 5258787Srustatic device_method_t usart_at91_methods[] = { 532742Swollman /* Device interface */ 542742Swollman DEVMETHOD(device_probe, usart_at91_probe), 552742Swollman DEVMETHOD(device_attach, uart_bus_attach), 562742Swollman DEVMETHOD(device_detach, uart_bus_detach), 572742Swollman { 0, 0 } 582742Swollman}; 592742Swollman 6019878Swollmanstatic driver_t usart_at91_driver = { 612742Swollman uart_driver_name, 622742Swollman usart_at91_methods, 632742Swollman sizeof(struct uart_softc), 64270817Spluknet}; 652742Swollman 662742Swollmanextern SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs; 67149514Swollman 6821217Swollmanstatic int 699908Swollmanusart_at91_probe(device_t dev) 709908Swollman{ 712742Swollman struct uart_softc *sc; 7219878Swollman 7319878Swollman sc = device_get_softc(dev); 7419878Swollman switch (device_get_unit(dev)) 7519878Swollman { 7619878Swollman case 0: 7719878Swollman device_set_desc(dev, "DBGU"); 7819878Swollman /* 7919878Swollman * Setting sc_sysdev makes this device a 'system device' and 8019878Swollman * indirectly makes it the system console. 8119878Swollman */ 8219878Swollman sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs); 8319878Swollman bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas)); 8419878Swollman break; 8519878Swollman case 1: 8619878Swollman device_set_desc(dev, "USART0"); 8719878Swollman break; 8893799Swollman case 2: 8958787Sru device_set_desc(dev, "USART1"); 9058787Sru break; 9119878Swollman case 3: 9219878Swollman device_set_desc(dev, "USART2"); 9319878Swollman break; 949908Swollman case 4: 95149514Swollman device_set_desc(dev, "USART3"); 969908Swollman break; 979908Swollman case 5: 98270817Spluknet device_set_desc(dev, "USART4"); 9921217Swollman break; 10019878Swollman case 6: 10119878Swollman device_set_desc(dev, "USART5"); 1029908Swollman break; 103149514Swollman } 1049908Swollman sc->sc_class = &at91_usart_class; 1059908Swollman if (sc->sc_class->uc_rclk == 0) 1069908Swollman sc->sc_class->uc_rclk = at91_master_clock; 1079908Swollman return (uart_bus_probe(dev, 0, 0, 0, device_get_unit(dev))); 10858787Sru} 10958787Sru 11058787Sru 11164499SwollmanDRIVER_MODULE(uart, atmelarm, usart_at91_driver, uart_devclass, 0, 0); 11264499Swollman